阅读说明：本技术 钻机动力头总成、钻机动力钻头、螺旋钻采机 (Drilling machine power head assembly, drilling machine power drill bit and spiral drilling and mining machine ) 是由 韩健健 于 2021-01-28 设计创作，主要内容包括：本发明适用于煤炭开采技术领域,提供了钻机动力头总成,包括：钻杆驱动减速箱,用于安装钻取煤层的钻杆；行星减速机；钻杆驱动减速箱安装在行星减速机上,与行星减速机传动连接；变量液压马达,用于向行星减速机提供动力,以使安装在钻杆驱动减速箱上的钻杆实现多档或无级变速。本发明具有以下优点：结构简单,体积小,重量轻,能够方便的在狭窄巷道内移动和转场；采取的是液压驱动方式,不存在过载堵转等不安全因素；属于柔性连接,在负载频繁变化时产生的冲击小,减速箱损坏的故障率低；可实现多档或无级变速,适应复杂煤层的地质情况。本发明还提供了基于上述钻机动力头总成的钻机动力钻头和螺旋钻采机。(The invention is suitable for the technical field of coal mining, and provides a drilling machine power head assembly, which comprises: the drill rod driving reduction box is used for installing a drill rod for drilling a coal seam; a planetary reducer; the drill rod driving reduction box is arranged on the planetary reducer and is in transmission connection with the planetary reducer; and the variable hydraulic motor is used for providing power for the planetary reducer so as to enable the drill rod arranged on the drill rod driving reduction box to realize multi-gear or stepless speed change. The invention has the following advantages: the structure is simple, the volume is small, the weight is light, and the movement and transition in a narrow roadway can be convenient; the hydraulic driving mode is adopted, so that unsafe factors such as overload locked rotor and the like do not exist; the flexible connection is adopted, so that the impact generated when the load changes frequently is small, and the failure rate of damage of the reduction gearbox is low; can realize multi-gear or stepless speed change and adapt to the geological condition of a complex coal bed. The invention also provides a drilling machine power drill bit and a spiral drilling and mining machine based on the drilling machine power head assembly.)

1. A drill head assembly, comprising:

the drill rod driving reduction box is used for installing a drill rod for drilling a coal seam;

a planetary reducer; the drill rod driving reduction box is arranged on the planetary speed reducer and is in transmission connection with the planetary speed reducer;

and the variable hydraulic motor is used for providing power for the planetary reducer so as to enable the drill rod arranged on the drill rod driving reduction box to realize multi-gear or stepless speed change.

2. A drill power bit, comprising:

a drill bit;

a drill stem; the drill bit is arranged at one end of the drill rod;

the drill head assembly of claim 1; the drill rod is arranged on a drill rod driving reduction box of the drilling machine power head assembly.

3. A drill power bit according to claim 2, wherein the bit and the drill rod are of the helical type.

4. A drill power drill according to claim 3, wherein there are two of said drill head and drill stem, said drill stem drive reduction gearbox having two power outputs; the two drill bits are respectively arranged at one end of the two drill rods, and the two drill rods are respectively arranged at two power input and output ends of the drill rod driving reduction gearbox.

5. An auger mining machine, comprising:

the drill power bit of any of claims 2 to 4;

a frame assembly; the power drill bit of the drilling machine is movably arranged on the frame assembly;

a base; the frame assembly is movably arranged on the base;

and the angle adjusting piece is arranged between the rack assembly and the base and is used for driving the rack assembly to deflect on the base.

6. The auger of claim 5, wherein the frame assembly comprises:

a support frame body;

the pulley bracket is arranged in the support frame body in a sliding manner;

the pulley bracket push-pull telescopic piece is used for driving the pulley bracket to move on the support frame body;

the first pulley is arranged on the pulley bracket;

the second pulley is arranged on the support frame body;

the sliding piece is arranged on the support frame body in a sliding manner; the power drill bit of the drilling machine is movably arranged on the sliding piece;

a transmission member; the first pulley, the second pulley and the sliding part are connected through the transmission part; when the pulley support pushes and pulls the telescopic part to drive the pulley support to move on the support frame body, the first pulley on the pulley support drives the sliding part to slide on the support frame body through the transmission part.

7. The auger according to claim 6 wherein the power bit of the drilling rig is provided with a drive box support, the drive box support being movably mounted on the slide in an articulated manner.

8. The auger according to claim 5 wherein the frame assembly is pivotally mounted to the base.

9. The auger according to claim 5 wherein the angle adjuster is selected from a hydraulic cylinder, a pneumatic cylinder or an electric telescopic element.

10. The auger according to claim 5 wherein the base is provided with telescoping legs.

Technical Field

The invention belongs to the technical field of coal mining, and particularly relates to a power head assembly of a drilling machine, a power drill bit of the drilling machine and a spiral drilling and mining machine.

Background

The vast majority of coal mining areas in China have thin, medium and thick coal seams, wherein the thin coal seam is rich in reserves. The reserve of the thin coal seam below 1.3m in China accounts for about 20 percent of the total reserve of coal. However, the problems of great difficulty in mining the thin coal seam, low work efficiency, poor safety and the like are always the difficult problems of restricting production continuation and sustainable development of coal enterprises, so that part of mining areas are exhausted too early, and the task of mining and utilizing the coal resources in China is increasingly aggravated. The method has great significance for protecting and utilizing coal resources, prolonging the mining life of mines and realizing high-efficiency mining by making good the mechanical mining of the thin coal seam. In thin and ultra-thin coal seams, other mechanical coal mining is difficult, and the labor conditions, the working environment of workers and the safety problem are prominent.

The spiral drilling machine coal mining method is a novel unmanned working face coal mining method, can mine coal seams with the thickness of 0.3-1.2 meters, opens up wide prospects for mining thin and extremely thin coal seams, and obtains better technical and economic benefits in mining the coal seams with small thickness. The spiral drilling machine has the advantages of less manpower, better benefit and safe operation, and can simultaneously mine some balance reserve outside the surface, improve the utilization rate of limited non-renewable resources of coal, increase industrial reserve, recover more underground resources, prolong the service life of a mine and improve the economic and social benefits of the mine. At present, a motor is directly connected with a mechanical gearbox to drive a spiral drill rod and a drill bit to drill.

The applicant of the present invention finds out in the above technical solutions that the existing auger drilling and production machine has at least the following disadvantages:

1. the driving mechanism with the motor directly connected with the mechanical gearbox is large in size and heavy (about 50 tons), a wider roadway needs to be excavated during mining, movement and transition in a narrow roadway are not facilitated, and the construction cost of a coal mine is increased by excavating the wider roadway;

2. the motor is directly connected with the mechanical gearbox, and unsafe factors such as motor overload and rotation blockage exist in the driving motor;

3. the driving mechanism belongs to rigid mechanical connection, and due to the fact that the internal structure of the mechanical gearbox is complex, the driving mechanism can generate large impact when the load changes frequently to cause damage of the reduction gearbox, and the maintenance cost of the reduction gearbox is high;

4. the rotating speed of the driving mechanism is constant, and the speed cannot be adjusted in real time according to requirements.

Disclosure of Invention

An embodiment of the present invention provides a power head assembly for a drilling machine, which aims to solve the problems mentioned in the background art.

The embodiment of the invention is realized in such a way that a drill power head assembly comprises:

the drill rod driving reduction box is used for installing a drill rod for drilling a coal seam;

a planetary reducer; the drill rod driving reduction box is arranged on the planetary speed reducer and is in transmission connection with the planetary speed reducer;

and the variable hydraulic motor is used for providing power for the planetary reducer so as to enable the drill rod arranged on the drill rod driving reduction box to realize multi-gear or stepless speed change.

It is another object of an embodiment of the present invention to provide a drill power bit, comprising:

a drill bit;

a drill stem; the drill bit is arranged at one end of the drill rod;

the power head assembly of the drilling machine; the drill rod is arranged on a drill rod driving reduction box of the drilling machine power head assembly.

Preferably, the drill bit and the drill rod are both of the helical type.

Preferably, the drill bit and the drill rod are both provided with two parts, and the drill rod driving reduction box is provided with two power output ends; the two drill bits are respectively arranged at one end of the two drill rods, and the two drill rods are respectively arranged at two power input and output ends of the drill rod driving reduction gearbox.

Another object of an embodiment of the present invention is to provide an auger drilling and extracting machine, including:

the drill power bit of any of the above;

a frame assembly; the power drill bit of the drilling machine is movably arranged on the frame assembly;

a base; the frame assembly is movably arranged on the base;

and the angle adjusting piece is arranged between the rack assembly and the base and is used for driving the rack assembly to deflect on the base.

Preferably, the rack assembly includes:

a support frame body;

the pulley bracket is arranged in the support frame body in a sliding manner;

the pulley bracket push-pull telescopic piece is used for driving the pulley bracket to move on the support frame body;

the first pulley is arranged on the pulley bracket;

the second pulley is arranged on the support frame body;

the sliding piece is arranged on the support frame body in a sliding manner; the power drill bit of the drilling machine is movably arranged on the sliding piece;

a transmission member; the first pulley, the second pulley and the sliding part are connected through the transmission part; when the pulley support pushes and pulls the telescopic part to drive the pulley support to move on the support frame body, the first pulley on the pulley support drives the sliding part to slide on the support frame body through the transmission part.

Preferably, the power drill bit of the drilling machine is provided with a driving box support, and the driving box support is movably arranged on the sliding part in a hinged mode.

Preferably, the frame assembly is movably arranged on the base in a hinged manner.

Preferably, the angle adjusting part is selected from a hydraulic oil cylinder, an air cylinder or an electric telescopic part.

Preferably, the base is provided with telescopic support legs.

The embodiment of the invention provides a drilling machine power head assembly, which comprises: the drill rod driving reduction box is used for installing a drill rod for drilling a coal seam; a planetary reducer; the drill rod driving reduction box is arranged on the planetary speed reducer and is in transmission connection with the planetary speed reducer; and the variable hydraulic motor is used for providing power for the planetary reducer so as to enable the drill rod arranged on the drill rod driving reduction box to realize multi-gear or stepless speed change.

Compared with the prior art, the invention has the following advantages:

1. the power head assembly of the drilling machine is simple in structure, small in size and light in weight, compared with a driving mechanism with the same power in the background technology, the size and the weight of the power head assembly are reduced by more than two times, the power head assembly can be conveniently moved and transferred in a narrow roadway without excavating a wider roadway, and the construction cost of a coal mine cannot be increased;

2. the variable hydraulic motor adopts a hydraulic driving mode, so that unsafe factors such as overload and locked rotor do not exist;

3. the variable hydraulic motor is connected with the drill rod driving reduction gearbox through the planetary reducer, belongs to flexible connection, and has the advantages of small impact generated when the load changes frequently, low failure rate of damage of the reduction gearbox, convenient maintenance of the reduction gearbox and low maintenance cost;

4. the variable hydraulic motor can realize multi-gear (generally two-gear) or stepless speed change, and can manually regulate the speed or steplessly and automatically regulate the speed according to the hardness and the drilling depth of the coal seam, thereby adapting to the geological condition of the complex coal seam.

Drawings

FIG. 1 is a schematic structural diagram of a drill head assembly provided in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a power drill bit for a unidirectional drilling rig provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a bi-directional drilling rig power bit configuration provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an auger drilling and production machine according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a forward inclination of 45 degrees of the auger drilling and production machine according to an embodiment of the present invention;

FIG. 6 is a schematic view of the auger mining machine provided by an embodiment of the present invention tilted back 20 degrees;

fig. 7 is a schematic structural diagram of a rack assembly according to an embodiment of the present invention.

In the drawings: 100. a variable displacement hydraulic motor; 200. a planetary reducer; 300. a drill rod driving reduction box; 400. a drill stem; 500. a drill bit; 510. connecting the male head and the female head; 600. a drive case support; 700. a frame assembly; 710. a support frame body; 720. a second pulley; 730. a transmission member; 740. a slider; 750. a first pulley; 760. the pulley bracket pushes and pulls the telescopic piece; 770. a pulley bracket; 780. nylon blocks; 800. a base; 900. an angle adjusting member; 1000. a telescopic supporting leg.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

Example 1

As shown in fig. 1, a drill head assembly according to an embodiment of the present invention includes:

the drill rod driving reduction box 300 is used for installing a drill rod 400 for drilling a coal seam;

a planetary reducer 200; the drill rod driving reduction box 300 is arranged on the planetary speed reducer 200 and is in transmission connection with the planetary speed reducer 200;

and the variable hydraulic motor 100 is used for providing power for the planetary reducer 200 so as to realize multi-gear or stepless speed change of the drill rod 400 installed on the drill rod driving reduction box 300.

The working principle of the embodiment of the invention is as follows:

the variable hydraulic motor 100 drives the planetary reducer 200 to operate, the planetary reducer 200 drives the drill rod driving reduction gearbox 300 to operate, the power output end of the drill rod driving reduction gearbox 300 is used for installing a drill rod 400 for drilling a coal seam, and the drill rod driving reduction gearbox 300 drives the drill rod 400 to rotate so as to drill the coal seam.

Compared with the prior art, the invention has the following advantages:

1. the power head assembly of the drilling machine is simple in structure, small in size and light in weight, compared with a driving mechanism with the same power in the background technology, the size and the weight of the power head assembly are reduced by more than two times, the power head assembly can be conveniently moved and transferred in a narrow roadway without excavating a wider roadway, and the construction cost of a coal mine cannot be increased;

2. the variable hydraulic motor 100 adopts a hydraulic driving mode, so that unsafe factors such as overload and locked rotor do not exist;

3. the variable hydraulic motor 100 is connected with the drill rod driving reduction gearbox 300 through the planetary reducer 200, belongs to flexible connection, and has the advantages of small impact generated when the load changes frequently, low failure rate of damage of the reduction gearbox, convenient maintenance of the reduction gearbox and low maintenance cost;

4. the variable hydraulic motor 100 can realize multi-gear (generally two-gear) or stepless speed change, and can manually adjust the speed or steplessly and automatically adjust the speed according to the hardness and the drilling depth of the coal seam, so that the variable hydraulic motor is suitable for the geological condition of a complex coal seam. For example, when the drilling load is large, a low-speed gear can be adopted, and the power head assembly drives the drill rod 400 thereon to drill at a low speed and a large torque; when the load is small and drilling is easy or powder is discharged, a high-speed gear can be used, and the power head assembly drives the drill rod 400 on the power head assembly to rotate at a high speed, so that the pulverized coal can be discharged quickly in time, and the drilling efficiency is improved.

Example 2

As shown in FIG. 2, an embodiment of the present invention also provides a drill power bit, comprising:

a drill bit 500;

a drill rod 400; the drill bit 500 is disposed at one end of the drill rod 400;

the drill head assembly of example 1; the drill rod 400 is mounted on a drill rod drive reduction gearbox 300 of the drill head assembly.

As shown in fig. 2, the drill bit 500 and the drill rod 400 are both of a helical type as a preferred embodiment of the present invention.

As shown in fig. 3, as a preferred embodiment of the present invention, the drill bit 500 and the drill rod 400 are provided in two pieces, and the drill rod driving reduction box 300 has two power output ends; the two drill bits 500 are respectively arranged at one end of the two drill rods 400, and the two drill rods 400 are respectively arranged at two power input and output ends of the drill rod driving reduction box 300.

Specifically, the drill bit 500 is connected to the drill rod 400 through a male and female connection head 510.

This embodiment provides a single directional drilling power bit and a dual directional drilling power bit on the basis of embodiment 1, with all the advantages of the red diamond power bit assembly of embodiment 1. In addition, the power drill bit of the drilling machine capable of drilling in two directions can drill into a coal seam simultaneously in two directions during coal mining, and coal mining efficiency can be doubled.

Furthermore, at the time of drilling, since the drill rod 400 and the drill bit 500 take the form of a spiral, the drill bit 500 cuts the coal seam into fine coal, and then conveys the coal out of the borehole by the spiral blade of the drill rod 400. Therefore, the power drill bit of the drilling machine only mines coal and does not mine waste rock, and the mined coal quality is good and the waste rock content is low.

Example 3

As shown in fig. 4, an embodiment of the present invention further provides an auger mining machine, including:

the drill power bit of any of embodiment 2;

a frame assembly 700; the power drill bit of the drilling machine is movably arranged on the frame assembly 700;

a base 800; the rack assembly 700 is movably arranged on the base 800;

the angle adjusting member 900 is disposed between the rack assembly 700 and the base 800, and is used for driving the rack assembly 700 to deflect on the base 800.

In particular, the present embodiment provides an auger mining machine having all the advantages of the drill head assembly of embodiment 1 and the power bit of the drill of embodiment 2. In addition, because the angle adjusting piece 900 is arranged between the base 800 and the frame assembly 700, the power drill bit of the drilling machine on the frame assembly 700 can realize certain angle adjustment during coal mining, the construction mining area of the auger drilling machine in the embodiment is increased, and the coal mining rate is improved.

Taking the spiral drilling and mining machine in the attached figures 5 and 6 as an example, the spiral drilling and mining machine in the figures can realize the angle adjustment of forward inclination of 45 degrees and backward inclination of 20 degrees, and can realize drilling at +/-45 degrees. Of course, the angle adjustment of the auger drilling and mining machine is not limited to this, and the corresponding angle adjusting piece 900 can be arranged according to actual conditions, so that different angle adjusting functions are provided.

As shown in fig. 7, the rack assembly 700 according to a preferred embodiment of the present invention includes:

a support frame body 710;

a pulley bracket 770 slidably disposed in the support frame body 710;

a pulley bracket push-pull expansion member 760 for driving the pulley bracket 770 to move on the support frame body 710;

a first pulley 750 provided on the pulley bracket 770;

a second pulley 720 provided on the support frame 710;

a sliding member 740 slidably disposed on the support frame body 710; the drill power bit is movably arranged on the sliding part 740;

a transmission member 730; the first pulley 750, the second pulley 720 and the sliding member 740 are connected through the transmission member 730; when the pulley bracket push-pull expansion member 760 drives the pulley bracket 770 to move on the support frame body 710, the first pulley 750 on the pulley bracket 770 drives the sliding member 740 to slide on the support frame body 710 through the transmission member 730.

Specifically, a nylon block 780 is disposed between the pulley bracket 770 and the support frame body 710. The structure of the frame assembly 700 of the embodiment can move the power drill of the drilling machine, and the specific working principle is as follows:

the pulley bracket 770 is driven to move on the support bracket body 710 by the pulley bracket push-pull expansion member 760, the first pulley 750 on the pulley bracket 770 drives the sliding part 740 to slide on the support bracket body 710 by the transmission member 730, and the sliding part 740 drives the drill power drill to move when sliding because the drill power drill is arranged on the sliding part 740. Because the pulley bracket push-pull expansion piece 760 has the functions of expansion and contraction, the power drill bit of the drilling machine can be driven to move forwards or backwards in the frame assembly 700, so that the construction convenience of the spiral drilling and mining machine is improved, and the labor intensity of workers is reduced.

In this embodiment, the pulley holder push-pull expansion member 760 may be an expansion mechanism such as hydraulic expansion, pneumatic expansion, or electric expansion; the transmission member 730 may be selected from a transmission chain, a transmission belt, and the like.

As shown in fig. 4, as a preferred embodiment of the present invention, a driving box support 600 is provided on the power drill of the drilling machine, and the driving box support 600 is movably provided on the sliding member 740 in a hinged manner.

As shown in fig. 4, as a preferred embodiment of the present invention, the frame assembly 700 is movably disposed on the base 800 in a hinged manner.

As a preferred embodiment of the present invention, the angle adjusting member 900 is selected from a hydraulic cylinder, an air cylinder, or an electric telescopic member.

As shown in fig. 4, as a preferred embodiment of the present invention, a telescopic leg 1000 is provided on the base 800.

Specifically, four front and back telescopic legs 1000 are arranged on the base 800, the telescopic legs 1000 can extend out and retract, and the front and back telescopic legs prop against the coal mine roadway side after the telescopic legs extend out, so that the drilling machine is stabilized, and the shaking is reduced.

The telescopic leg 1000 in this embodiment may be a hydraulic telescopic structure, a pneumatic telescopic structure, or an electric telescopic structure.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.