阅读说明：本技术 露天矿智能化连续开采装备 (Intelligent continuous mining equipment for strip mine ) 是由 赵立峰 李玉波 郭武 于 2019-06-18 设计创作，主要内容包括：本发明公开一种露天矿智能化连续开采装备,包括机架部,还包括：截割部、装载部、破碎部、运输部、除尘系统,所述截割部位于机架部前端上部,所述的装载部位于机架部前端下部,所述运输部位于机架部上部,所述破碎部位于机架部的右侧,所述的除尘系统位于机架部的上部。本发明的露天矿智能化连续开采装备,集物料截割、装载、破碎、运输、除尘于一体,可替代现有技术中采用斗铲、斗轮挖掘机与转载机、皮带运输机等设备的配套作业,形成高效的全连续开采工艺。(The invention discloses an intelligent continuous mining device for strip mine, which comprises a rack part and also comprises: the cutting part is located on the upper portion of the front end of the frame part, the loading part is located on the lower portion of the front end of the frame part, the transporting part is located on the upper portion of the frame part, the crushing part is located on the right side of the frame part, and the dust removal system is located on the upper portion of the frame part. The intelligent continuous mining equipment for the strip mine integrates cutting, loading, crushing, transporting and dedusting of materials, can replace the matched operation of equipment such as a bucket shovel, a bucket wheel excavator, a reversed loader, a belt conveyer and the like in the prior art, and forms an efficient full continuous mining process.)

1. The utility model provides an intelligent continuous mining of strip mine is equipped, includes the rack portion, still includes: the cutting part is located on the upper portion of the front end of the frame part, the loading part is located on the lower portion of the front end of the frame part, the transporting part is located on the upper portion of the frame part, the crushing part is located on the right side of the frame part, and the dust removal system is located on the upper portion of the frame part.

2. The intelligent continuous mining equipment for strip mines according to claim 1, wherein the dust removal system comprises two sets of suction cleaning devices and a coal chute installed at the upper part of each set of suction cleaning device, the coal chute being used for sliding the coal blocks falling on the coal chute into the transportation part.

3. The strip mine intelligent continuous mining apparatus of claim 1, the crushing section including a first crushing structure mounted above the cutting section for crushing coal pieces falling thereon.

4. The intelligent continuous mining apparatus of claim 3, the crushing section further comprising a second crushing structure mounted above the transport section for crushing large pieces of material falling to the transport section.

5. The intelligent continuous mining apparatus of strip mine according to claim 1, the transport section comprising:

a front chute and a rear chute;

the gantry flange structure is used for connecting the rear end of the front chute and the front end of the rear chute and connecting the front end of the front chute and the front end of the rear chute into a linear chute frame body;

the U-shaped clamping groove is arranged at the front end of the front chute and used for connecting the front chute with the front part of the frame part;

the opening of the U-shaped clamping groove is formed in the front part of the front chute and is clamped with the frame part;

wherein the rear chute is hinged to the rear portion of the frame portion.

6. The intelligent continuous mining apparatus of strip mine according to claim 5, the haulage section further comprising:

a scraper chain assembly mounted on the front chute and the rear chute;

the driving device is arranged on the rear chute and is close to the rear end of the rear chute and is used for driving the scraper chain assembly;

a tensioning device mounted on the rear chute and used for enabling a driving device to tension the scraper chain assembly;

the driving device comprises a driving frame with a pair of sliding plates extending out in opposite directions, and the pair of sliding plates are respectively connected with the pair of sliding chutes in a sliding manner;

the driving device further comprises a driving chain wheel arranged on the driving frame, and the scraper chain assembly is provided with a chain in matched connection with the driving chain wheel.

7. The intelligent continuous mining installation for a strip mine according to claim 1, the loading section comprising a drive with a permanent magnet motor.

8. The intelligent continuous mining apparatus of claim 1, further comprising a hydraulic system having an oil tank adapted to the extreme cold environment and a secondary hydraulic circuit in communication with the oil tank for controlling secondary motion associated with the apparatus.

9. The strip mine intelligent continuous mining apparatus of claim 8, the oil tank comprising:

a tank for storing hydraulic oil;

a gear pump mounted on the box body and a gear pump motor connected with the gear pump;

one end of the oil suction pipe is inserted into the box body, and the other end of the oil suction pipe is communicated with an oil suction port of the gear pump;

an oil return pipeline for communicating an oil outlet of the gear pump with an oil return port of the box body;

an overflow valve mounted on the oil return line;

the heating device is connected with the oil suction pipe and used for heating hydraulic oil in the oil suction pipe;

the temperature sensor is arranged on the box body and used for detecting the temperature of the hydraulic oil in the box body;

the heat insulation layer is arranged on the box body and used for keeping the temperature of the hydraulic oil in the box body;

the gear pump motor, the resistance heater and the temperature sensor are electrically connected with the control device, so that the control device controls the on and off of the gear pump motor and the resistance heater according to temperature data fed back by the temperature sensor.

10. The intelligent continuous mining equipment for open pit mines of claim 8 or 9, the hydraulic system further comprising a cooling filter device connected to the oil tank for uninterrupted cooling filtration treatment of the oil tank.

Technical Field

The invention relates to the technical field of mining mechanical equipment, in particular to intelligent continuous mining equipment for strip mines.

Background

At present, the mining process of a bucket shovel and a bucket wheel excavator is applied in the comprehensive mechanized continuous mining process of strip mine mining, and the mining process adopting the equipment has the following problems: the auxiliary equipment such as a transfer machine, a belt conveyer and the like is required to carry out matching operation, so that the mining investment is overlarge, and hundreds of millions of RMB are required to be purchased; the equipment is heavy, often several thousand tons to ten thousand tons, and is inconvenient to move; the equipment has large difficulty in entering transportation and assembly, and large difficulty in operation maintenance and stope adjustment; the operation cost is high, the installed power is large, and the flexibility is poor; the equipment has high requirements on a working site and poor environmental adaptability; the production efficiency is limited during mining, and the production standardization difficulty of a stope is high.

Disclosure of Invention

The invention aims to provide intelligent continuous mining equipment for strip mines.

In order to achieve the above object of the present invention, the intelligent continuous mining equipment for a strip mine according to an embodiment of the present invention includes a rack unit, further including: the cutting part is located on the upper portion of the front end of the frame part, the loading part is located on the lower portion of the front end of the frame part, the transporting part is located on the upper portion of the frame part, the crushing part is located on the right side of the frame part, and the dust removal system is located on the upper portion of the frame part.

The dust removal system comprises two sets of suction purification devices and a coal slide plate arranged on the upper part of each set of suction purification device, and the coal slide plate is used for enabling coal blocks falling on the coal slide plate to slide into the transportation part.

The crushing part comprises a first crushing structure which is arranged above the cutting part and used for crushing coal blocks falling onto the cutting part.

Further, the crushing part also comprises a second crushing structure which is arranged above the conveying part and used for crushing the large materials falling to the conveying part.

Wherein the transport portion includes: a front chute and a rear chute; the gantry flange structure is used for connecting the rear end of the front chute and the front end of the rear chute and connecting the front end of the front chute and the front end of the rear chute into a linear chute frame body; the U-shaped clamping groove is arranged at the front end of the front chute and used for connecting the front chute with the front part of the frame part; the opening of the U-shaped clamping groove is formed in the front part of the front chute and is clamped with the frame part; wherein the rear chute is hinged to the rear portion of the frame portion.

Further, the transport portion further includes: a scraper chain assembly mounted on the front chute and the rear chute; the driving device is arranged on the rear chute and is close to the rear end of the rear chute and is used for driving the scraper chain assembly; a tensioning device mounted on the rear chute and used for enabling a driving device to tension the scraper chain assembly; the driving device comprises a driving frame with a pair of sliding plates extending out in opposite directions, and the pair of sliding plates are respectively connected with the pair of sliding chutes in a sliding manner; the driving device further comprises a driving chain wheel arranged on the driving frame, and the scraper chain assembly is provided with a chain in matched connection with the driving chain wheel.

Wherein the loading part comprises a driving device with a permanent magnet motor.

Furthermore, the device also comprises a hydraulic system which is provided with an oil tank adapting to the extremely cold environment and a secondary transportation hydraulic circuit communicated with the oil tank and used for controlling secondary transportation actions matched with the device.

Wherein, the oil tank includes: a tank for storing hydraulic oil; a gear pump mounted on the box body and a gear pump motor connected with the gear pump; one end of the oil suction pipe is inserted into the box body, and the other end of the oil suction pipe is communicated with an oil suction port of the gear pump; an oil return pipeline for communicating an oil outlet of the gear pump with an oil return port of the box body; an overflow valve mounted on the oil return line; the heating device is connected with the oil suction pipe and used for heating hydraulic oil in the oil suction pipe; the temperature sensor is arranged on the box body and used for detecting the temperature of the hydraulic oil in the box body; the heat insulation layer is arranged on the box body and used for keeping the temperature of the hydraulic oil in the box body; the gear pump motor, the resistance heater and the temperature sensor are electrically connected with the control device, so that the control device controls the on and off of the gear pump motor and the resistance heater according to temperature data fed back by the temperature sensor.

Furthermore, the hydraulic system also comprises a cooling and filtering device which is connected with the oil tank and is used for carrying out uninterrupted cooling and filtering treatment on the oil tank.

Compared with the prior art, the intelligent continuous mining equipment for the strip mine has the following advantages:

1. the intelligent continuous mining equipment for strip mine disclosed by the invention integrates the cutting part, the loading part, the crushing part, the transporting part and the dust removal system, and is a brand new equipment formed by integrating at least three kinds of equipment in the prior art so as to form an efficient full-continuous mining process, complete in function and greatly reduce the manufacturing cost of the whole equipment, in the sense that a bucket shovel and a bucket wheel excavator in the prior art need to be matched with subsequent equipment such as mobile dust removal equipment, a reversed loader, a belt conveyer and the like.

2. The dust removal system is an airborne dry dust removal system, is suitable for mining areas where water resources are scarce or water resources cannot be utilized, can timely suck and purify dust-containing gas generated by cutting coal walls by the cutting part, improves dust removal efficiency, realizes ultralow emission of the dust gas, reduces environmental pollution, greatly reduces physical damage to operators, and improves conveying efficiency.

3. The transportation part and the frame part are connected in a plug-in manner through the U-shaped groove, so that the defects that the pin shaft is difficult to align and time and labor are wasted in installation when the pin shaft is installed in the traditional transportation machine are overcome, the disassembly and maintenance efficiency of the transportation machine is improved, and the disassembly, the assembly and the maintenance of the front chute and the rear chute are convenient and quick.

4. The oil tank adopted by the hydraulic system effectively ensures normal starting of an oil pump of mining machinery through the heating device and the heat insulation layer in an extremely cold environment, has high heating speed, good heat insulation effect, low use and maintenance cost and obvious economic benefit, and can continuously and circularly cool hydraulic oil under the condition of high temperature, thereby solving the problems of temperature and cleanliness of the hydraulic oil in the oil tank.

5. The cooling system of the invention combines a water cooling mode, an air cooling mode and a refrigerant cooling mode, solves the defect of using a large amount of water, and simultaneously ensures the cooling effect of each part.

The present invention will be described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a three-dimensional view of an intelligent continuous mining apparatus for a strip mine according to an embodiment of the present invention;

FIG. 2 is a front view of an intelligent continuous mining installation for a strip mine in accordance with an embodiment of the present invention;

fig. 3 is a plan view of an intelligent continuous mining installation for a strip mine in accordance with an embodiment of the present invention;

fig. 4 is a left side view of an intelligent continuous mining apparatus for a strip mine in accordance with an embodiment of the present invention;

fig. 5 is a center-polished view of an intelligent continuous mining apparatus for a strip mine (without a dust removal system) in accordance with an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a cutting portion according to an embodiment of the present invention;

FIG. 7 is a schematic view of the loading section directly driven by the permanent magnet motor of the present embodiment;

FIG. 8 is a perspective view of a direct drive arrangement for the permanent magnet motor of the present embodiment;

fig. 9 is a sectional view of a driving apparatus directly driven by the permanent magnet motor of the present embodiment;

FIG. 10 is a perspective view of the transport section of the present invention;

FIG. 11 is a perspective view of a front chute of the present invention;

FIG. 12 is a schematic view of a portion of a scraper chain assembly of a first construction of the invention;

FIG. 13 is a cross-sectional view of the tensioner of the present invention;

FIG. 14 is an exploded view of the tensioner of the present invention;

FIG. 15 is a perspective view of the drive of the present invention;

FIG. 16 is a schematic view of the mounting of the transport section to the frame section of the present invention;

FIG. 17 is a schematic view of a portion of a second configuration scraper chain assembly in accordance with the invention;

FIG. 18 is a schematic view showing the construction of an inhalation purification apparatus according to an embodiment of the present invention;

FIG. 19 is an exploded view of the walking portion, shovel portion, frame portion, and transporting portion of an embodiment of the present invention;

FIG. 20 is a schematic structural view of a fuel tank according to an embodiment of the present invention;

FIG. 21 is a control schematic of a fuel tank controller according to an embodiment of the present invention;

FIG. 22 is a schematic illustration of a hydraulic system according to an embodiment of the present invention;

FIG. 23 is a schematic diagram of an uninterrupted cooling and filtering system for a fuel tank in accordance with an embodiment of the present invention;

FIG. 24 is a first schematic view of a control portion of an uninterrupted cooling and filtering system for a fuel tank in accordance with an embodiment of the present invention;

FIG. 25 is a second schematic view of a control portion of an uninterrupted cooling and filtering system for a fuel tank in accordance with an embodiment of the present invention;

FIG. 26 is a schematic view of a second crushing configuration in accordance with an embodiment of the invention;

fig. 27 is a view of the position of the second crushing structure in relation to the transport part according to the embodiment of the invention.

Detailed Description

As shown in fig. 1 to 5, which are schematic structural diagrams of the intelligent continuous mining equipment for strip mines according to the embodiment of the present invention, it can be seen that the mining equipment of the embodiment includes: the frame portion still includes: cutting part, loading portion, crushing portion, transportation portion, dust pelletizing system, cutting part are located frame portion front end upper portion, and loading portion is located frame portion front end lower part, and transportation portion is located frame portion upper portion, and crushing portion is located the middle part of frame portion, and dust pelletizing system is located the upper portion of frame portion.

Specifically, the apparatus of the present embodiment includes: a frame part 4 for connecting all the parts into a whole; a walking part 5 which is arranged at the two sides of the frame and used for the complete machine to move; the cutting part 1 is arranged at the upper part of the front side of the frame and used for cutting materials, and can swing up and down along with the action of the cutting lifting oil cylinder to cut the materials; the loading part 2 is arranged at the lower part of the front side of the rack and used for collecting materials, can be lifted and fall under the action of the shovel plate lifting oil cylinder, and collects the materials through the rotation of the star wheel; a transport part 3 arranged in the middle of the frame for transporting the material loaded by the loading part to the rear end of the equipment; the crushing part 7 is arranged at one side of the main frame body, and the roller is arranged at the upper end of the conveyor and is used for crushing the loaded massive materials so as to meet the requirement of the size of the transported materials; a dust removal system 6 which is arranged at the top of the whole machine and is used for absorbing and removing dust generated in the cutting process; the hydraulic system 8 comprises a pump station arranged on the left side of the machine body, an operating valve and hydraulic actuating elements arranged on all parts of the machine body, and realizes the action control of the whole machine which needs to be controlled by the hydraulic elements; in addition, the electric part 9, the remote monitoring part 10, the circulating cooling system 11, the lubricating system 12 and the like are also included.

When the strip mine needs to be mined, the equipment is driven to walk to a required position through the walking part 5, materials are cut through the up-and-down swinging of the cutting part 1, the materials cut by the cutting part 1 are collected through the loading part 2, the materials loaded by the loading part 2 are transported to the rear end of the equipment through the transporting part 3, meanwhile, the large materials loaded by the transporting part 3 are crushed through the crushing part 7 to meet the requirement of the size of the transported materials, dust generated in the cutting process of the cutting part 1 is absorbed and filtered through the dust removal system 6, the action control of all hydraulic actuating elements of the whole equipment is realized through the hydraulic part 8, the action control of all electrical elements of the whole equipment is realized through the electrical part 9, the remote monitoring management of the relevant actions of the whole equipment is realized through the remote monitoring part 10, and the motors, the speed reducers and the hydraulic loops are cooled through the circulating cooling system 11, lubrication of the various pins is achieved by a lubrication system 12.

Specifically, the frame portion 4 is a base of the entire apparatus, and includes a main frame body 401 and a rear frame body assembled together in the front-rear direction, and further includes a crushing portion connecting pin 402, a front-rear frame connecting pin, a supporter, a cutting portion connecting pin 406, a traveling portion connecting key groove, a supporter connecting pin, and the like, which are mounted on the frame portion 4 and are used to connect the frame portion 4 with other mechanisms of the apparatus, such as a crushing portion, a supporter, a cutting portion, a traveling portion, and the like. The crushing part connecting pin 402, the front and rear frame connecting pins, the cutting part connecting pin 406 and the support connecting pin are directly matched with holes formed in the main frame body 401, the main frame body 401 and the rear frame body are connected together through the front and rear frame connecting pins and the support connecting pin to form an integral framework, the support is connected to the main frame body 401 through the support connecting pin, and the support can rotate along the support connecting pin through the extension and retraction of the rear support lifting oil cylinder to realize the support and retraction actions of the support; the support falls, so that when the equipment needs to be stopped for maintenance, the support can be matched with the shovel plate 201 to support the bottom surface of the crawler belt away from the ground, and the support does not contact with ground obstacles when the equipment travels to form resistance.

As shown in fig. 6, the cutting unit 1 of the present embodiment is composed of a middle boom 101, a cutting motor 102, a left reduction box 103, a right reduction box 104, a drum 105, and an output connection disc 106, wherein reducers are respectively disposed in the left reduction box 103 and the right reduction box 104. The middle arm support 101 is connected to the main frame body 401 of the frame part 4 through the cutting part connecting pin 406, and can swing up and down around the cutting part connecting pin 406 through the action of the cutting lifting cylinder 805, so that the cutting part 1 can swing up and down relative to the frame part 4. The left reduction box body 103 and the right reduction box body 104 are respectively connected with the middle arm support 101 through flange surfaces, the two cutting motors 102 are respectively connected with the left reduction box body 103 and the right reduction box body 104 through flanges, the output end of the reducer is connected with the corresponding output connecting disc 106 through a spline, and the output connecting disc 106 is connected with the roller 105 through a rectangular flange. When the cutting motor rotates, the power is transmitted to the drum through the speed reducer, so that the drum rotates, the rotary cutting of the coal wall, the cutting and blanking actions are realized by the drum.

The loader unit 2 of the present invention is composed of a blade 201, a drive unit 202, and a driven wheel 206. As can be seen from fig. 7-9, the loading unit of the present embodiment includes a shovel 201 for containing the material, a pair of driving devices 202 mounted on the shovel 201 for driving the material on the shovel 201 to be conveyed toward the transporting unit 3, and a driven wheel 206 (not shown in fig. 7) mounted on the shovel 201 and located between the pair of driving devices 202. Wherein, the shovel 201 can adopt the prior art shovel structure, and the driving device comprises; a driving seat 2022 fixedly installed on the shovel plate 201; a permanent magnet motor 2021 which is installed on the driving base 2022 and the output shaft of which extends out of the driving base 2022; a frequency converter connected with the permanent magnet motor 2021 and used for controlling the operation of the permanent magnet motor; a rotating disk 2024 which is connected with an output shaft key of the permanent magnet motor 2021 and is sleeved outside the upper part of the driving seat 2022; and the loading mechanism is fixedly connected with the rotating disc 2024 and is used for driving and conveying materials.

Specifically, both sides of one end (rear end) of the shovel plate 201 are provided with a pair of shovel plate pin shaft lug seats 203 which extend out of the shovel plate 201 and are used for hinging the shovel plate 201 and the main frame body 401 of the frame part, the shovel plate pin shaft lug seats 203 are concentrically matched with pin holes of the shovel plate pin shaft lug plates 410 of the main frame body 401, and the shovel plate 201 and the main frame body 401 are connected together by penetrating through the concentric pin holes of the shovel plate pin shaft lug seats 203 and the shovel plate pin shaft lug plates 410 through a shovel plate connecting pin shaft 205.

A driving seat 2022 is mounted on the upper surface of the shovel plate 201, the driving seat 2022 is a stepped shaft-shaped driving seat with a central through hole, the bottom of the driving seat is the part with the largest diameter, and the bottom of the driving seat is fixed on the shovel plate 201 by a plurality of bolts 2029.

The permanent magnet motor 2021 is mounted on the driving base 2022, and the permanent magnet motor 2021 can be fixed on the driving base 2022 by a plurality of bolts. The permanent magnet motor 2021 can adopt a low-speed large-torque permanent magnet motor in the prior art, the base of the permanent magnet motor is positioned below the driving seat 2022, and the output shaft of the permanent magnet motor passes through the central through hole of the driving seat 2022 and extends upwards.

The permanent magnet motor of the present embodiment is connected to a frequency converter through a cable, and the frequency converter can be installed in an electric control box (not shown in the figure) of the present equipment electric control unit. Because the permanent magnet motor adopts the frequency converter for power supply, the speed regulation range is wide, stepless speed change can be realized, the operation is convenient, flexible, strong in controllability, high in operation efficiency, small in impact on a power grid, simple in transmission chain, low in failure rate and basically free of maintenance, and middle mechanical transmission equipment is removed. In addition, the frequency converter is adopted to control the permanent magnet synchronous motor to be in soft start with large torque, dynamic tension impact is small during starting, the heavy-load starting effect is good, impact on electrical and mechanical equipment is greatly reduced, and compared with the traditional driving mode, the dynamic safety coefficient is higher under the condition of the same strength. The permanent magnet motor can be regulated according to the size of the loading capacity, the whole loading system is ensured to run under the optimal driving power, and the loading part of the traditional motor reduction box can only run under the set power, so that the waste of electric energy is avoided.

In this embodiment, the output shaft of the permanent magnet motor 2021 is connected to the rotating disc 2024 through a spline or a flat key, so that the rotating disc 2024 can be driven to rotate when the permanent magnet motor 2021 rotates. The rotating disk 2024 has a stepped shaft shape and includes a smaller diameter portion at an upper portion and a larger diameter portion connected to a bottom portion of the smaller diameter portion. The center of the bottom of the larger diameter part is provided with a counter bore extending along the axial direction of the larger diameter part, and the inner wall of the counter bore is provided with a spline groove or a flat spline groove used for connecting with an output shaft of the permanent magnet motor 2021. Correspondingly, the outer wall of the output shaft of the permanent magnet motor 2021 is provided with a matched spline groove or a flat spline groove. Preferably, a spline connection may be used. In addition, an annular groove for arranging the upper part of the driving seat 2022 in the rotary disk 2024 is further annularly arranged on the outer side of the counter bore of the larger diameter part of the rotary disk 2024, and the annular groove is a stepped groove which is narrow at the upper part and wide at the lower part along the axial direction of the output shaft of the permanent magnet motor.

Wherein, the inner hole diameter of the driving seat 2022 is larger than the inner diameter of the annular groove of the rotating disk 2024 for assembly, and the length of the central through hole of the driving seat 2022 along the axial direction should be larger than the length of the annular groove of the rotating disk 2024 along the axial direction. A bearing 2025 is disposed between the inner wall of the drive socket 2022 and the outer wall of the annular groove of the rotary disk 2024, so that the rotary disk 2024 can rotate relative to the drive socket 2022.

A round nut 2023 is attached to the bottom of the bearing 2025 to axially limit the bearing 2025. The round nut 2023 is mounted on the output shaft of the permanent magnet motor 2021 by a screw connection and is located at the lower part of the rotating disk 2024. When the design is performed, the outer diameter of the ring of the round nut 2023 is larger than the inner diameter of the bearing 2025, so that the upper surface of the ring can abut against the bottom of the bearing 2025, and the bearing 2025 is prevented from moving axially on the output shaft of the permanent magnet motor 2021, thereby avoiding the occurrence of faults or noise during operation.

Wherein, a loading mechanism 2026 for driving and conveying the materials is sleeved on the outer wall of the rotating disc 2024 and is fixed on the rotating disc 2024 by a plurality of positioning pins and bolts extending along the axial direction of the permanent magnet motor. In design, the loading mechanism 2026 and the rotating disc 2024 are respectively provided with a positioning pin hole 2027 and a bolt hole 2028 at corresponding positions, so that a positioning pin and a bolt sequentially pass through the loading mechanism 2026 and the positioning pin hole 2027 and the bolt hole 2028 on the rotating disc 2024 from top to bottom, respectively, thereby fixing the loading mechanism 2026 on the rotating disc 2024 and enabling the loading mechanism 2026 to rotate along with the rotating disc 2024. The loading mechanism 2026 of this embodiment may be a star wheel loading mechanism (as shown in fig. 7-9), or a crab claw loading mechanism (not shown) as in the prior art.

The pair of rotating discs 2024 are arranged at two sides of the shovel board 201 in parallel and have opposite rotating directions so as to realize loading and conveying of materials, the driven wheel 206 is installed on the shovel board 201 and is positioned between the pair of rotating discs 2024, the driven wheel 206 is meshed with the front end of the scraper chain of the conveying part 3, and the rear end of the scraper chain is meshed with the driving wheel 316 of the conveying part 3, so that the driven wheel 206 follows the driving wheel 316. When the pair of rotary discs 2024 rotate oppositely to convey materials backwards, the driven wheel 206 rotates along with the rotary disc to drive the scraper on the scraper chain to continuously convey the materials to the back of the conveying part.

The rear end of the blade 201 is also hinged to the main frame 401 of the frame part 4 via a blade lift cylinder 807, so that the entire loading part 2 can swing up and down with respect to the frame part 4 around a blade connecting pin 205 by the action of the blade lift cylinder 807, and the loading part 2 can cooperate with the support 404 at the rear of the frame part 4 to support the bottom surface of the track of the traveling part 5 off the ground.

Next, the assembly and operation of the loading unit according to the present embodiment will be described with reference to fig. 7 to 9.

During assembly, the bearing 2025 is fixed between the rotary disk 3 and the drive seat 2022, the round nut 2023 is used for fastening and positioning, the external spline of the output shaft of the permanent magnet motor 2021 is aligned with the internal spline of the rotary disk 2024, the permanent magnet motor is fixed on the drive seat by a bolt, the loading mechanism 2026 is sleeved on the rotary disk, a positioning pin is threaded on the rotating disk for fastening by the bolt, and then the drive seat is fixed on the shovel plate by the bolt according to the figure 7.

After the assembly, when the frequency converter controls the permanent magnet motor 2021 to be in soft start, the rotating disc connected with the output shaft of the permanent magnet motor rotates along with the output shaft relative to the driving seat and drives the loading mechanism fixedly connected with the rotating disc to rotate along with the output shaft, so that the loading mechanism can drive and convey materials falling onto the shovel plate into the chute of the conveying part.

The loading part of the embodiment of the invention is directly driven by the permanent magnet motor, so the invention has the advantages of compact structure, small volume, light weight, large starting torque, high efficiency, stable operation, low noise and convenient installation.

As can be seen from fig. 10, the loading unit 2 of this embodiment conveys the materials cut by the cutting unit 1 to the transporting unit 3, and the transporting unit of this embodiment includes: a front chute 301 and a rear chute 303; the gantry flange structure is used for connecting the rear end of the front chute 301 and the front end of the rear chute 303 to form a linear chute frame body; a U-shaped slot 326 arranged at the front end of the front chute 301 and used for connecting the front chute 301 with the front part of the frame part 4; the opening of the U-shaped clamping groove 326 is arranged in the front of the front chute 301 and is clamped with the frame part 4, and the rear chute 303 is hinged with the rear part of the frame part 4. When the multifunctional rack is designed, correspondingly, a shovel connecting pin shaft 205 is arranged at the front part of the rack part 4, a supporting rod 332 is arranged at the rear part of the rack part 4, the U-shaped clamping groove 326 of the front chute 301 is clamped with the shovel connecting pin shaft 205 of the rack part 4, and the rear chute 303 is hinged with the supporting rod 332.

Specifically, as shown in fig. 10, the transport section of the present embodiment includes a front chute 301, a flight chain assembly 302, a rear chute 303, a tensioning device 304, and a drive device 305.

The front chute 301 and the rear chute 303 are connected together through a gantry type flange structure so as to form a linear chute frame body. The gantry flange structure of this embodiment can adopt the following structure, include: a first gantry flange 323 (shown in fig. 11) mounted at the rear end of the front chute 301, having a pair of first vertical posts extending in the vertical direction and a first cross member connecting the top ends of the pair of first vertical posts; a second gantry flange 324 mounted at the front end of the rear chute 303, having a pair of second vertical posts extending in the vertical direction and a second cross beam connecting the top ends of the pair of second vertical posts (as shown in fig. 10); and the bolt assemblies are used for correspondingly connecting the pair of first vertical columns and the pair of second vertical columns and the first cross beam and the second cross beam together respectively.

As shown in fig. 11, the front chute 301 includes a frame 328, a U-shaped slot 326 disposed at the front end of the frame 328, and a support 327 disposed at the bottom of the frame 328, and the U-shaped slot 326 and the support 327 are respectively welded to the frame 328. The rear chute 303 also has a frame similar in construction to the front chute 301 and mounts other components thereon.

When the transport unit is attached to the frame unit 4, as shown in fig. 16, a coupling method is adopted in which the U-shaped engaging groove 326 of the transport unit front chute 301 is engaged with the blade connecting pin 205 provided on the main frame body of the frame unit 4, the support 327 of the transport unit is dropped on the main frame body of the frame unit 4, and the rear chute 303 is hinged to the support rod 332 on the rear frame body of the frame unit 4 via the transport unit rear connecting pin 306, thereby fixing the transport unit to the frame unit 4. The connected mode of this embodiment with transport portion and rack portion changes into the bayonet connection of U type groove by the connected mode of traditional round pin axle, and the round pin axle is adjusted the difficulty well when having avoided traditional transport portion to adopt the round pin axle installation, and the shortcoming that the installation is wasted time and energy has improved transport portion dismouting and maintenance efficiency on rack portion. In addition, the front chute 301 and the rear chute 303 are connected together through a gantry type flange structure, and the disassembly, assembly and maintenance are convenient and fast.

The transport portion of this embodiment includes the following structure in addition to including the chute frame body: a scraper chain assembly mounted on the front chute 301 and the rear chute 303; a drive means mounted on the rear chute 303 near its rear end for driving the scraper chain assembly; a tensioning device mounted on the rear chute 303 and used to cause the drive device to tension the flight chain assembly. Wherein, the two outer sides of the rear chute 303 are respectively provided with a chute extending along the length direction thereof, the driving device comprises a driving frame with a pair of sliding plates extending in opposite directions, and the pair of sliding plates are respectively connected with the pair of chutes in a sliding manner; the driving device further comprises a driving chain wheel arranged on the driving frame, and the scraper chain assembly is provided with a chain connected with the driving chain wheel in a matching mode.

Specifically, as shown in fig. 15, the driving device 305 of the present embodiment includes a pair of driving motors 314, a pair of speed reducers 315, a pair of driving sprockets 316, and a driving frame 317. A pair of driving motors 314 are respectively installed on two sides of the driving frame 317, the pair of driving motors 314 are respectively connected with a pair of speed reducers 315 through flanges, the pair of speed reducers 315 are connected with the driving frame 317 through flanges and located on two sides of the driving frame 317, the pair of speed reducers 315 share one output shaft, and a pair of driving chain wheels 316 are connected to the output shafts of the pair of speed reducers 315 through splines. The driving frame 317 is provided with a pair of sliding plates 330 extending in opposite directions, sliding grooves 331 extending along the length direction of the rear chute 303 are formed on both sides of the rear chute 303, and the pair of sliding plates 330 are slidably connected with the sliding grooves 331. The entire drive assembly 305 is engaged by a pair of slide plates 330 on the drive carriage 317 with the slide slots 331 on either side of the rear chute 303 (as shown in figure 14) so that the entire drive assembly 305 slides within the slide slots 331 by the action of the tensioning device 304 to effect tensioning of the scraper chain assembly 302.

In this embodiment, can adopt a mode that a bi-motor drive output shaft and drive a pair of driving sprocket work on the output shaft for driving sprocket atress is reasonable, and transport portion overload capacity is strong.

The power source of the driving device of the present invention may be driven by a double hydraulic motor, a single motor, or a single motor, in addition to the above-described double motor.

In this embodiment, a scraper chain assembly 302 is mounted on a chute frame body formed by a front chute 301 and a rear chute 303. The scraper chain assembly 302 of this embodiment may be configured as shown in fig. 12, and includes a plurality of bolts 320, nuts 321, circular chains 318, a connecting ring 319, an upper scraper 329, and a lower scraper 322, wherein the upper scraper 329 and the lower scraper 322 clamp the plurality of circular chains 318 and are connected together by the plurality of bolts 320 and the nuts 321, i.e., the scraper chain assembly 302 has a chain connected in a ring shape by the plurality of circular chains 318 and the connecting ring 319, and the chain has a plurality of upper scrapers 329 and lower scrapers 322.

The scraper chain assembly of this embodiment is a closed loop arrangement with one end connected to the driven wheel 206 of the blade section 2 and the other end connected to the drive sprocket 316 of the drive means 305 so that the scraper chain assembly 302 carries away material falling onto the chute frame under the drive of the pair of drive sprockets of the drive means 305. That is, when the pair of driving motors 314 are operated, the driving shaft (i.e. the output shaft) of the reducer drives the pair of driving sprockets 316 to rotate around the driving shaft, so as to drive the scraper chain assembly 302 and the driven wheels of the blade portion 2 to rotate along with the driving sprockets 316, and drive the upper scraper 329 and the lower scraper 322 to continuously transport the material to the rear of the apparatus.

Since the chain of the scraper chain assembly 302 may loosen after a period of operation, in order to prevent the chain from loosening from the driving sprocket 316 and the driven sprocket, the present embodiment further employs a tensioning device capable of automatically adjusting the tensioning condition of the chain, as shown in fig. 13 and 14, and the tensioning device includes: a chute support 311 fixedly installed on the rear chute 303; a driving device support 313 fixedly installed on a driving frame of the driving device 305; a chain tensioning cylinder 309, the cylinder body of which is mounted on the rear chute 303 and the piston rod of which is connected with a driving device support 313; wherein the chain tensioning cylinder 309 is a hydraulic cylinder or an electric cylinder. In addition, the overspeed device tensioner still includes the limit structure that is used for restricting the tensioning position of overspeed device tensioner, includes: a spacing adjustment shim plate 312 inserted into a cavity formed between the chute mount 311 and the drive device mount 313; a cover plate 310 disposed above the spacing adjustment pad 312 and snap-coupled with the driving device holder 313.

Specifically, as shown in fig. 13 and 14, the tensioning device is composed of a chain tensioning cylinder 309, a cover plate 310, a chute support 311, a spacing adjustment shim plate 312 and a drive device support 313.

The tray support 311 is fixed to the rear tray 303, and the drive device support 313 is fixed to a drive rack of the drive device 305. The body of the chain tensioning cylinder 309 is connected to a cylinder connecting seat mounted on the rear chute 303 through a pin shaft, and the extending end of the piston rod is connected to a driving device support 313 fixed with the driving frame. The distance adjusting shim plate 312 is fully inserted between the chute support 311 and the driving device support 313, and when the driving device 305 is pulled back by the scraper chain assembly 302, the relative position of the driving device 305 and the rear chute 303 is ensured to be unchanged due to the supporting function of the distance adjusting shim plate 312 between the chute support 311 and the driving device support 313, namely, the tensioning function is realized.

The spacing adjustment shim plate 312 is made of a set of steel plates with different thicknesses, and an appropriate shim plate combination is selected according to the actual distance between the chute support 311 and the driving device support 313 during adjustment. During tensioning, the chain tensioning cylinder 309 extends out to push the driving device support 313 to drive the whole driving device 305 to move forwards along a pair of sliding grooves on the rear chute 303 through a pair of sliding plates which are welded on the driving frame 317 and connected with the driving frame 317 into a whole, when the driving device 305 moves to a proper position, the adjusting base plate 312 with a proper thickness is clamped between the chute support 311 and the driving device support 313, and the chain tensioning cylinder 309 is decompressed. When the driving device 305 is subjected to the pulling force of the scraper chain assembly 302, the driving device support 313 is driven to retract, and when the driving device support 313 collides against one side of the rear added spacing adjusting base plate 312, the other side of the spacing adjusting base plate 312 is tightly attached to the chute support 311 on the rear chute 303, so that the driving device 305 cannot retract continuously, and the tensioning limiting is realized. The cover plate 310 presses the interval adjustment pad 312 downward from above the interval adjustment pad 312 and is fastened to the driving device mount 313 so that the interval adjustment pad is fixed by the cover plate, thereby preventing the interval adjustment pad 312 from falling off from its limit position when it is shaken.

The chain tensioning cylinder 309 is connected with a control system of the strip mine continuous mining equipment, so that the chain tensioning cylinder extends out under the control of the control system and drives the driving device and the scraper chain assembly to automatically adjust the tensioning force.

In addition, the scraper chain assembly of this embodiment may also adopt an edge double-chain scraper chain assembly as shown in fig. 17: the scraper chain assembly 302 consists of a circular ring chain 318, a peach-shaped ring 319, a bolt 320, a nut 321 and a scraper 322, wherein the circular ring chain 318 is buckled with the peach-shaped ring 319, and the peach-shaped ring is connected with the scraper through the bolt 320 and the nut 321.

The driving motor 314 rotates to drive the reducer 315, the reducer 315 drives the driving sprocket 316 to rotate, and the teeth of the driving sprocket 316 drive the round-link chain 318 and the peach-shaped ring 319 to rotate, thereby driving the scraper 322 to move along the rotating direction. The whole scraper chain ring chain 318 and the peach-shaped ring 319 form a closed loop, one end of the whole scraper chain ring chain is connected to the driving wheel 316, the other end of the whole scraper chain ring chain is connected to the driven wheel 206 of the loading part 2, the driving wheel rotates to drive the scraper chain, the driven wheel rotates along with the driving wheel, and the scraper drives the scraper to continuously transport materials to the rear of the equipment.

By the above, the conveying part of the embodiment can automatically adjust the tension of the scraper chain assembly, the chain is adjusted more conveniently and quickly in tightness, time and labor are saved, the chain is safe and reliable, the occurrence of chain clamping, chain jumping and chain breaking faults is reduced, the working efficiency of the whole machine is improved, the conveying part can be installed and detached more conveniently and quickly, the structure is simple, the space is small, and the assembling, disassembling and maintaining efficiency of the conveying part can be effectively improved.

In order to crush the large materials falling from the coal wall, the present embodiment further includes a crushing portion 7, and as shown in fig. 1, 26, and 27, the crushing portion 7 includes: the first crushing structure is arranged in the middle position above the cutting part 1 and is used for crushing coal blocks falling onto the cutting part; and a second crushing structure which is arranged above the conveying part and is used for crushing the large materials falling to the conveying part 3.

Wherein, the first crushing structure comprises a coal breaking plate 704 arranged at the middle position of the upper part of the cutting part 1 and an inclined coal plate 705 which is connected with the rear end of the coal breaking plate and is inclined towards the rear lower part to the transportation part 3. The wedge-shaped steel nails are fully distributed above the coal breaking plate 704, massive coal falling from the coal wall collides with the wedge-shaped steel nails under the action of gravity, the massive coal falling from the coal wall can be broken, and the coal after breaking treatment slides into the transportation part 3 towards the oblique rear through the inclined coal plate 705, so that the coal can be timely conveyed out, and the conveying efficiency is improved.

And the second crushing structure comprises a boom 701, a crushing drum 702 and a crushing motor 703. The crushing roller 702 used in the present embodiment is a reducer-integrated crushing roller, the arm 701 is connected to the main frame 401 of the frame portion 4 by the crushing portion connecting pin 402, the crushing roller 702 is fixed to the arm 701 by a flange, and the crushing motor 703 is installed inside the crushing roller 702. The crushing motor 703 rotates and transmits power to the crushing roller 702 through the speed reducer, so as to crush the material. The crushing roller 702 is arranged in the front chute 301 of the conveyor 3, a gap d is formed between the outer diameter (shown by a dotted line in fig. 26) of the crushing roller 702 and the front chute bottom plate 301a, the cantilever 701 is connected with the frame part 4 through the crusher lifting cylinder 808, the vertical swing relative to the frame part 4 is realized through the expansion and contraction of the crusher lifting cylinder 808, and the size of the gap d is controlled, so that the size of the crushed materials is controlled.

Because a large amount of dusts are produced when cutting units 1 cut coal, for preventing the dust from leaking polluted environment outward and causing the health damage to surrounding staff, this embodiment is provided with dust pelletizing system 6 on frame portion 4, and this dust pelletizing system 6 is airborne dry dust pelletizing system, includes: a pair of dust sealing plates 605 which are arranged at two sides of the cutting part 1 and enclose a semi-closed space with the cutting part 1 and the loading part 2 for preventing dust generated during coal mining and cutting of the cutting part 1 from leaking; two sets of suction and purification devices which are arranged on the frame part and are positioned at two sides of the coal breaking plate 704 of the breaking part 7 and are used for sucking and purifying dust-containing gas generated during coal mining and cutting; a coal chute 606 installed at the upper part of each set of the suction cleaning device for sliding the coal pieces dropped thereon into the transportation section 3.

The airborne dry-type dust removal system of this embodiment is installed on the frame portion, is the modularized integrated airborne dry-type dust removal system, and it is nimble convenient to mobilize, and it can enclose into the semi-enclosed space of front portion, lower part opening with cutting unit 1, loading unit 2 through installing a pair of dust sealing board 605 in cutting unit 1 both sides to the dust that produces when preventing cutting unit 1 coal mining leaks outward, effectively guarantees dust removal effect. And the gas containing dust generated during coal mining and cutting is sucked away and purified in time through the two sets of suction and purification devices, so that the dust removal efficiency is improved, the ultralow emission of dust gas can be realized, the pollution to the environment is greatly reduced, and the physical injury of operators caused by the suction of a large amount of dust gas is also reduced. The coal slide plate 606 arranged on the upper part of each set of the suction purification device can slide the coal blocks falling on the suction purification device into the transportation part 3, thereby not only improving the transportation efficiency of the coal blocks, but also effectively preventing the coal blocks from being accumulated on the upper part of the suction purification device.

When the cutting part 1 cuts the coal wall, the gas containing dust generated during coal cutting is sucked away and purified in time by the two sets of sucking and purifying devices positioned at the left and right sides of the frame part in the embodiment, and the sucking and purifying devices in the embodiment can adopt the structure as shown in fig. 1, and comprise: the air suction device 601 is arranged at the upper part of the cutting part 1 and moves along with the cutting part 1, and a plurality of air inlets for sucking dust-containing gas are formed in the air suction device; a dust collector 603 installed at an upper portion of the frame part for purifying a dust-containing gas; a hinge assembly 604 for integrally and hermetically connecting the suction device 601 and the dust collector 603; and a centrifugal fan 602 mounted on the upper portion of the frame portion and communicating with the dust collector 603.

The hinge assembly 604 of the present embodiment may adopt the following structure, including: a connection plate installed at the front end of the dust collector 603 and having a pair of ear plates; a connecting lug which is arranged at the rear end of the air suction device 601 and is hinged with the pair of ear plates; and a sealing sleeve (not shown) sleeved at the front end of the dust remover 603 and the rear end of the air suction device 601 and used for sealing the joint of the dust remover 603 and the air suction device 601. During manufacturing, the sealing sleeve is made of elastic materials, such as rubber, so that after the front end of the dust remover 603 is hinged with the rear end of the air suction device 601, when the air suction device 601 moves along with the cutting part 1, the sealing sleeve can stretch and retract correspondingly, the joint of the dust remover 603 and the air suction device 601 is ensured to be sealed, and dust gas flowing to the dust remover from the air suction device 601 is prevented from leaking.

When the air suction device 601 is connected with the dust remover 603 through the hinge device 604, the other end of the sealing sleeve covers the connecting plate and seals and fixes the periphery of the opening at the front end of the shell of the dust remover 603. The opening of the sealing sleeve is sealed and fixed with the air suction device or the dust remover, and the sealing sleeve can adopt a sticking mode and other modes in the prior art.

The transportation part 3 of this embodiment is located between the two sets of suction purification devices, a pair of coal chutes 606 installed on the upper parts of the two sets of suction purification devices have inclined plates 609 inclined downward toward the transportation part 3 and extending in opposite directions, and the included angle between the inclined plates 609 and the vertical direction is greater than 0 degree, less than 90 degrees, preferably greater than 15 degrees, and in design, the lower ends of the inclined plates 609 preferably extend to the upper part of the transportation part 3. When the coal blocks fall onto the coal slide plate 606 and are stacked, the coal blocks slide downwards into the transportation part 3 along the inclined plate of the coal slide plate 606 under the action of the self weight of the coal blocks, and the upper part of the dust remover 603 is ensured to have no coal blocks stacked.

The air suction device 601 of this embodiment has an air suction duct 610 installed on the upper portion of the frame portion, the front end of the air suction duct 610 extends to the upper side of the cutting portion 1, and the front portion of the air suction duct 610 is provided with a plurality of air inlets, so as to suck away the dust-containing air generated during the cutting operation of the cutting portion 1 in time. The air suction duct 610 includes an upper portion exposed above the dust seal plate and a lower portion hidden below the upper surfaces of the dust seal plate and the coal breaking plate along the horizontal direction, and the positions of the plurality of air inlets disposed on the air suction duct are as shown in fig. 18, and include: an upper front air inlet 607 positioned at the upper part of the front end of the air suction pipe, an upper side air inlet 608 positioned at the upper side wall of the front end, a lower main air inlet 611 positioned at the lower part of the front end, and a lower front air inlet 612 positioned at the lower part of the front end. The upper side air inlet 608 is disposed on one side of the air suction pipes facing the coal breaking plate 704, that is, the upper side air inlets 608 on the two air suction pipes are disposed oppositely, and the upper front air inlet 607 and the upper side air inlet 608 are disposed on the upper portion of the air suction pipes exposed above the dust sealing plate. The lower main air inlet 611 and the lower front air inlet 612 are disposed at the lower portion hidden under the upper surface of the dust-sealing plate and the coal-breaking plate, and the lower main air inlet 611 and the lower front air inlet 612 also face the cutting part 1.

Through set up a plurality of air intakes respectively on two devices 601 that induced drafts for the upper and lower, left and right all directions of cutting unit cylinder all have the air intake, and the gaseous dust-laden that each dust production point produced can in time be siphoned away from the multiaspect when guaranteeing cutting unit cutting, improves dust collection efficiency. And the device 601 that induced drafts can link along with cutting part 1, guarantees the promptness that each item cutting process removed dust, and the dust board 605 is installed in cutting part 1 both sides, forms relative enclosure space with cutting part 1, loading portion 2, and the dust that produces when effectively preventing to cut leaks outward, and then guarantees dust collection efficiency. The dry type dust removal mode is adopted, the influences of low wet type dust removal efficiency, high energy consumption and serious secondary water pollution caused by water resource shortage, easiness in dust generation due to environment drying and incapability of normally using water under extremely cold conditions in western coal mine areas in China are avoided, and the dust removal efficiency of the whole system is further ensured.

Next, the operation of the dust removing system of the present embodiment will be described.

In the dust removing system of this embodiment, when the dust removing system is in operation, the centrifugal fan 602 connected to the dust remover 603 is turned on, and under the negative pressure of the fan, the air current enters the air suction duct from each of the upper, lower, left, and right air ports of the air suction device 601, and passes through the hinge device hinged to the air suction duct to reach the dry type filter dust remover 603, and the dust-containing gas generated by cutting and transporting coal at the front end of the device enters the dust remover 603 along with the air current and is collected. At this time, the dust-containing gas is controlled in front of the air suction device 601 and does not diffuse to the rear of the whole apparatus, the dust-containing gas is purified after entering the dust remover 603, and the purified clean air is discharged through the outlet of the centrifugal fan 602.

Therefore, the dust removal system provided by the embodiment of the invention can timely suck and purify the dust-containing gas generated by the cutting part cutting the coal wall, thereby realizing ultralow emission of the dust gas, reducing environmental pollution and reducing physical damage to operators.

The mining equipment of the embodiment comprises, in addition to the above structure, a hydraulic system connected to each component and used for controlling the operation of the hydraulic actuators of each component, and the hydraulic system comprises a pump station installed on the left side of the frame part 4, an operating valve, and hydraulic actuators arranged on each component of the equipment. The hydraulic executing elements comprise an oil pump motor 801, a hydraulic oil pump 802, an oil tank 803, a control multi-way valve 804, a cutting lifting oil cylinder 805, a rear support lifting oil cylinder 806, a shovel plate lifting oil cylinder 807, a crusher lifting oil cylinder 808, a filter 809, a cooler 810, a system oil filling loop 811, a walking brake opening loop 812 and the like, and are used for carrying out corresponding action control on the cutting part 1, the loading part 2, the transportation part 3, the walking part 5, the crushing part 7, the cooling system 11 and the like. Or gear pump)

The oil pump motor 810 drives the hydraulic oil pump 802 to pump hydraulic oil from the oil tank 803 to provide high-pressure oil for the system, the high-pressure oil is distributed to each loop by controlling the multi-way valve 804, the high-pressure oil is converted into kinetic energy of each corresponding oil cylinder to drive each oil cylinder to move correspondingly, and low-pressure oil at an oil outlet of each oil cylinder passes through the cooler and then is filtered by the filter 809 to return to the oil tank 803. In addition, the oiling loop 811 provides a convenient, clean, time-saving and labor-saving oiling method for the system. The traveling brake opening circuit 812 supplies a pressure oil source for the traveling brake opening of the traveling part 5, and monitors whether the brake is opened. The hydraulic heating valve 813 is arranged at the position of the control multi-way valve 804 for controlling the cutting lifting cylinder 805, and after the equipment is placed in an air environment with the temperature ranging from zero to 40 ℃ below zero for a long time, the viscosity of hydraulic oil is increased when the viscosity of the hydraulic oil is changed due to cold, the hydraulic heating valve 813 is used for heating the hydraulic oil, so that the viscosity of the hydraulic oil can be reduced, and the starting requirement of an oil pump is met.

In addition to the circuits for controlling the actuating elements of each part of the equipment, the hydraulic system of the embodiment of the invention is also provided with a secondary transport hydraulic circuit for controlling secondary transport action matched with the equipment, as shown in fig. 22, the secondary transport hydraulic circuit comprises a secondary transport folding circuit, a secondary transport tensioning circuit and a secondary transport leveling circuit, the three circuits respectively control the actions of a secondary transport folding oil cylinder 817, a secondary transport tensioning 818 and a secondary transport leveling oil cylinder 819 through a multi-way valve, and the three circuits are communicated with the oil outlet of the oil tank 803. Therefore, in the embodiment, the hydraulic system of the back matching equipment in the prior art is integrated in the hydraulic system of the strip mine intelligent continuous mining equipment, so that the hydraulic control of the back matching reversed loader of the strip mine intelligent continuous mining equipment is realized, and the operation of the reversed loader is more convenient.

As can be seen from fig. 20, the oil tank adopted by the hydraulic system of this embodiment is an oil tank adaptable to an extremely cold environment (the temperature is as low as about-40 ℃), and includes: a tank 8031 for storing hydraulic oil, on which a gear pump 8035 (i.e., the hydraulic oil pump 802) and a gear pump motor 8032 (i.e., the oil pump motor 801) connected to the gear pump 8035 are mounted; an oil suction pipe 8037 having one end inserted in the tank 8031 and the other end communicating with an oil suction port of the gear pump 8035; an oil return pipeline for communicating an oil outlet of the gear pump 8035 with an oil return port of the box 8031; an overflow valve 8036 mounted on the return line; a heating device connected with the oil suction pipe 8037 and used for heating the hydraulic oil in the oil suction pipe 8037; a temperature sensor 8039 mounted on the tank 8031 for detecting the temperature of the hydraulic oil in the tank 8031; an insulating layer 8310 mounted on the tank 8031 for maintaining the temperature of the hydraulic oil in the tank 8031; the gear pump motor 8032, the resistance heater, the temperature sensor 8039 and an oil tank controller of the electric control system are electrically connected, so that the oil tank controller controls the on and off of the gear pump motor 8032 and the resistance heater according to temperature data fed back by the temperature sensor 8039.

Specifically, the oil tank of this embodiment includes a tank body 8031, a gear pump motor 8032, a flange 8303, a coupling 8304, a gear pump 8035, an overflow valve 8036, an oil suction pipe 8037, a heating device, a temperature sensor 8039, an insulating layer 8310, a cover plate 8311, and the like.

The box body 8031 is a cuboid-shaped shell made of low-temperature-resistant steel and provided with an opening, the heat insulation layer 8310 is made of heat insulation materials with good heat insulation effect, the heat insulation layer is extruded on the box body 8031 through the cover plate 8311, heat can be effectively insulated, the oil temperature of hydraulic oil in the box body 8031 is prevented from being reduced too fast, and the cover plate 8311 is fixed at the opening of the box body 8031 through bolts.

The gear pump motor 8032 and the gear pump 8035 are connected together through a flange 8303 and a coupling 8304, and the flange 8303 is fixed on the box 8031 through bolts, so that the gear pump motor 8032 and the gear pump 8035 are fixed. An oil outlet of the gear pump 8035 is communicated with an oil return port of the box 8031 through an oil return pipeline, an overflow valve 8036 is arranged on the oil return pipeline, and the overflow valve 8036 can be fixed on the box 8031 through bolts.

One end of the oil suction pipe 8037 is inserted into the hydraulic oil in the tank 8031 and is fixed in the tank 8031 through a flange bolt, the oil suction pipe 8037 is provided with an oil suction port of the gear pump 8035 and an oil suction port of the hydraulic oil pump 802, and the oil suction pipe is communicated with the oil suction port of the gear pump 8035 and the oil suction port of the hydraulic oil pump 802 through an oil pipe, so that the hydraulic oil in the tank can be sucked out through the oil suction pipe when the gear pump 8035 and the hydraulic oil pump work.

The heating device can adopt a resistance heater 8308, the resistance heater 8308 is inserted into the oil suction pipe 8037 through a flange bolt and used for heating hydraulic oil in the oil suction pipe 8037, and in the design process, the resistance heater 8308 can adopt a heater with a high protection level, so that the oil suction pipe 8037 can be waterproof and dustproof.

When the gear pump 8035 or the hydraulic oil pump sucks hydraulic oil in the tank 8031 through the oil suction pipe 8037, the hydraulic oil in the oil suction pipe 8037 is heated by the resistance heater 8308, so that the condition that the gear pump 8035 or the oil pump is sucked to be empty due to too large oil suction resistance can be prevented. The gear pump motor 8032 directly drives the gear pump 8035 to rotate through the flange 8303 and the coupling 8304, hydraulic oil output by the gear pump 8035 passes through the overflow valve 8036, the overflow is heated (when the hydraulic pump is used, the pressure of the overflow valve 8036 can be set to be 6MPa), the hydraulic oil with heat after the overflow flows back to the box 8031, and the circulation heating is carried out.

In order to effectively monitor the temperature of the hydraulic oil in the tank 8031 and automatically heat and control the hydraulic oil in the oil suction pipe 8037, in the embodiment, a temperature sensor 8039 is installed in the tank 8031, and the temperature sensor 8039 is directly screwed into a threaded interface of the tank 8031 so as to detect the temperature of the hydraulic oil in the tank 8031. The temperature sensor 8039 can feed back the detected temperature data to a fuel tank controller of the electrical part of the device, and the fuel tank controller can control the on/off of the resistance heater 8308 and the gear pump motor 8032 according to the fed-back oil temperature data (the control principle can be seen in fig. 21).

When the oil temperature in the box body 8031 is less than or equal to minus 10 ℃, the oil tank controller starts the resistance heater 8308 to heat the hydraulic oil to minus 10 ℃ so that the gear pump can be started.

When the oil temperature is more than or equal to minus 10 ℃ and less than or equal to plus 10 ℃, the oil tank controller starts the resistance heater 8308, and simultaneously starts the gear pump motor 8032 to drive the gear pump 8035, so that the hydraulic oil is circulated, overflowed and heated.

When the oil temperature > is +10 ℃, the oil tank controller closes the resistance heater 8308 and the gear pump motor 8032, and the oil temperature at the moment can meet the starting condition of the hydraulic oil pump.

Therefore, the oil tank of the embodiment is heated by the resistance heater and circularly heated by the low-pressure overflow of the overflow valve, so that the oil temperature is quickly increased; the oil temperature is prevented from dropping too fast by extruding the heat insulation layer between the box body and the cover plate; according to temperature sensor feedback oil temperature to oil tank controller, through opening and close of oil tank controller control resistance heater and gear pump motor to can preheat and keep warm the processing to the hydraulic oil in the box, avoid extremely cold environment to influence the normal start of mining machinery oil pump, and rate of heating is fast, and it is effectual to keep warm, uses the maintenance cost low, and economic benefits is obvious.

To ensure that the hydraulic system of the present embodiment can reliably operate in an environment with a high temperature, the hydraulic system of the present embodiment further includes a cooling and filtering device for cooling and filtering the oil tank uninterruptedly, and the cooling and filtering device includes: a pneumatic diaphragm pump 823 of which the oil inlet is communicated with the liquid outlet of the oil tank 803; a gas supply device communicated with the gas inlet of the pneumatic diaphragm pump 823 and used for providing power for the pneumatic diaphragm pump; a reversing valve 822 disposed between the gas supply device and the gas inlet of the pneumatic diaphragm pump 823; an oil inlet temperature sensor 829 arranged on the oil inlet pipe between the oil inlet of the pneumatic diaphragm pump 823 and the oil tank 803; a cooler 826 for cooling the hydraulic oil and a hydraulic oil filter 828 for filtering the hydraulic oil which is cooled by the cooler 826 and flows back to the oil tank 803 are sequentially arranged between the oil outlet of the pneumatic diaphragm pump 823 and the return port of the oil tank 803; an outlet port temperature sensor 827 installed on a line between the cooler 826 and the hydraulic oil filter 828; and the controller 1107 is electrically connected with the oil inlet temperature sensor 829, the hydraulic oil filter 828, the oil outlet temperature sensor 827 and the reversing valve 822 respectively and is used for controlling the actions of all the elements. Further, a relief valve 825 connected in parallel with the pneumatic diaphragm pump 823 and a muffler 824 connected to the pneumatic diaphragm pump 823 are included.

The gas supply device may be an air compressor 821 or a gas source, and the cooler 826 includes a water-cooled cooler and an air-cooled cooler. Specifically, as shown in fig. 23, the cooling and filtering device of this embodiment includes an air compressor 821 or an air source, a reversing valve 822 (the reversing valve may be a proportional pneumatic reversing valve), a pneumatic diaphragm pump 823, a muffler 824, a safety valve 825, a cooler 826 with efficient water cooling and air cooling functions, an oil outlet temperature sensor 827, a hydraulic oil filter 828, an oil tank 803, a controller 1107, an oil inlet temperature sensor 829, and the like.

The whole cooling and filtering device utilizes the self air compressor 821 of the machine set to supply compressed air to the system, drives the pneumatic diaphragm pump 823 to rotate so as to draw hydraulic oil out of the oil tank 803, the drawn hydraulic oil flows back into the oil tank 803 after passing through the cooler 826 and the hydraulic oil filter 828 in sequence, and therefore the hydraulic oil flowing back to the oil tank 803 is cooled and filtered through the cooler 826 and the hydraulic oil filter 828 respectively. The cooling and filtering device of the embodiment can filter and cool the hydraulic oil in the machine oil tank 803 uninterruptedly under the condition that the equipment does not stop.

Wherein, a hydraulic oil filter 828 is arranged at the return port of the oil tank 803. The air compressor 821 or source is the source of power that powers the entire system and is used to drive the rotation of the pneumatic diaphragm pump 823. The pneumatic diaphragm pump 823 is an actuator that draws hydraulic oil from the oil tank 803. The proportional pneumatic direction valve 822 is used to adjust the amount of air supplied from the air compressor 821 or the air source to the pneumatic diaphragm pump 823, so as to control the speed of the pneumatic diaphragm pump 823 sucking oil from the oil tank 803, and the proportional pneumatic direction valve 822 is controlled by the controller 1107 to perform corresponding actions.

The muffler 824 is used for eliminating noise generated by the pneumatic diaphragm pump 823 in the operation process, and provides a good working environment for workers. The relief valve 825 controls the pressure of the system to ensure the safety of the various elements of the system. The cooler 826 is used for cooling the high-temperature hydraulic oil extracted by the pneumatic diaphragm pump 823, and comprises a water cooling cooler and an air cooling cooler, and can provide two cooling modes, namely air cooling and water cooling, for the hydraulic oil, wherein the two cooling modes are used according to actual conditions, namely, if a water source exists on site, the water cooling mode can be used (namely, the water cooling cooler is adopted), and if no water source exists on site, the air cooling mode can be used (namely, the air cooling cooler is adopted). In addition, both air cooling and water cooling can be used, that is, both air cooling and water cooling can be used, and the two coolers can be arranged in series in the pipeline between the pneumatic diaphragm pump 823 and the hydraulic oil filter 828 during design.

The hydraulic oil filter 828 filters hydraulic oil in a hydraulic system, pollution in the hydraulic oil is left in the filter element, meanwhile, the filter has a safety protection function, once the filter element pollutants reach a certain amount, the hydraulic oil filter 828 provides data for the controller 1107, and after the filter element pollutants are analyzed by the controller 1107, an alarm or a processing suggestion is given to the system to remind an operator of corresponding processing.

The oil outlet temperature sensor 827 and the oil inlet temperature sensor 829 are respectively used for measuring the temperature of the hydraulic oil cooled by the cooler and the temperature of the hydraulic oil extracted from the oil tank 803 by the pneumatic diaphragm pump 823, and provide measurement data for the controller 1107. The controller 1107 collects data provided by the measurement elements, analyzes the data, and issues commands to control the proportional pneumatic directional valve 822 and to send corresponding treatment comments to the hydraulic system. The controller 1107 can be electrically connected to one or more of the air compressor or air source, the pneumatic diaphragm pump 823, the muffler 4, the safety valve 825 and the cooler 826 (the schematic diagram of the control part is shown in fig. 24, and the controller is electrically connected to all the above elements) in addition to being electrically connected to the oil inlet temperature sensor 829, the hydraulic oil filter 828, the oil outlet temperature sensor 827 and the reversing valve 822, respectively, so as to automatically control the above elements. Of course, the controller 1107 may not be electrically connected to the air compressor or air supply, the air operated diaphragm pump 823, the muffler 4, the relief valve 825, the cooler 826, etc., i.e., these elements may be manually controlled (the control part is schematically shown in fig. 25).

Therefore, the cooling and filtering device provided by the embodiment of the invention can be used for carrying out uninterrupted cooling and filtering treatment on the oil tank, has obvious effectiveness, compact and simple structure, accurate control and high efficiency, is more advanced, reasonable and intelligent, solves the problems of the temperature and the cleanliness of the hydraulic oil in the oil tank, and provides a convenient, intelligent and reliable solution for the temperature and the cleanliness of the hydraulic oil.

Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can modify the principle of the present invention, and thus, it should be understood that various modifications made in accordance with the principle of the present invention fall within the scope of the present invention.