阅读说明：本技术 多点分布驱动式刮板输送机中部槽及其使用方法 (Multipoint distribution driving type scraper conveyor middle groove and using method thereof ) 是由 葛世荣 姚仕辉 郭一楠 于 2021-10-08 设计创作，主要内容包括：一种多点分布驱动式刮板输送机中部槽及其使用方法,属于煤矿井下采煤工作面的技术领域。在所有中部槽的同一端左右两侧下槽部分别设有传动机构和与传动机构相连的永磁同步电动机,在刮板的左右两侧分别设有与传动机构轮齿相啮合的齿孔,刮板的上端面两侧对称设有沿中部槽两侧上下槽部内滑动的刮板辅助轮；刮板的前侧两头分别设有刮板推煤铲；刮板经刮板链牵引沿刮板输送机内做绕性运动,在到达每个中部槽的下槽部时,刮板左右两侧的齿孔与经永磁同步电机带动的传动机构轮齿相啮合,实现对刮板的多点分布驱动。对提高传统刮板输送机输送能力,改善链条强度,降低刮板输送机机头电机和机尾电机的功率、尺寸等方面具有重要意义。(A middle groove of a multipoint distribution driving type scraper conveyor and a using method thereof belong to the technical field of coal mining working faces in coal mines. The lower groove parts on the left side and the right side of the same end of all the middle grooves are respectively provided with a transmission mechanism and a permanent magnet synchronous motor connected with the transmission mechanism, the left side and the right side of each scraper are respectively provided with a tooth hole meshed with the teeth of the transmission mechanism, and two sides of the upper end surface of each scraper are symmetrically provided with auxiliary scraper wheels sliding in the upper groove part and the lower groove part on the two sides of the middle groove; two ends of the front side of the scraper are respectively provided with a scraper coal pushing shovel; the scraper is drawn by the scraper chain to do winding motion along the scraper conveyor, and when reaching the lower groove part of each middle groove, the tooth holes on the left side and the right side of the scraper are meshed with the gear teeth of the transmission mechanism driven by the permanent magnet synchronous motor, so that the multipoint distribution driving of the scraper is realized. The chain scraper has important significance in the aspects of improving the conveying capacity of the traditional scraper conveyor, improving the strength of the chain, reducing the power and the size of a head motor and a tail motor of the scraper conveyor and the like.)

1. The utility model provides a multiple spot distribution drive formula scraper conveyor middle part groove, includes middle part groove (1), scraper blade (2), its characterized in that: the left and right lower groove parts at the same end of the middle groove (1) are respectively provided with a transmission mechanism (5) and a permanent magnet synchronous motor (6) connected with the transmission mechanism (5), the left and right sides of the scraper (2) are respectively provided with a tooth hole meshed with the gear teeth of the transmission mechanism (5), and two sides of the upper end surface of the scraper (2) are symmetrically provided with auxiliary scraper wheels (4) sliding along the upper and lower groove parts at the two sides of the middle groove (1) so as to reduce the resistance of the scraper (2) in the advancing process; two ends of the front side of the scraper (2) are respectively provided with a scraper coal pushing shovel (3) so as to realize shoveling broken coal powder in the advancing process and reduce the broken coal powder entering the joint surface of the middle groove (1) and the scraper (2); the scraper (2) is drawn by the scraper chain to do winding motion along the scraper conveyor, and when reaching the lower groove part of each middle groove (1), the tooth holes at the left side and the right side of the scraper (2) are meshed with the gear teeth of the transmission mechanism (5) driven by the permanent magnet synchronous motor (6), so that point position distribution driving of the scraper (2) is realized.

2. The multipoint distribution driven scraper conveyor pan of claim 1, wherein: the transmission mechanism (5) comprises a worm connected with a transmission shaft of the permanent magnet synchronous motor (6) and a worm wheel meshed with the worm, the horizontal and transverse shaft sleeve of the worm wheel is arranged on two sides of the same end of the lower groove part of the middle groove (1), and the worm wheel only horizontally and transversely rotates by fixing the longitudinal movement of the worm wheel through the worm.

3. The multipoint distribution driven scraper conveyor pan of claim 1, wherein: the permanent magnet synchronous motors (6) arranged below the lower groove parts on the left side and the right side of the same end of the middle groove (1) are respectively one, the position direction of each permanent magnet synchronous motor (6) is parallel to the advancing direction of the scraper (2), and the output shaft of each permanent magnet synchronous motor (6) is connected with the worm of the transmission mechanism (5).

4. The multipoint distribution driven scraper conveyor pan of claim 1, wherein: the four coal pushing shovels (3) are respectively welded at four corners of the front end of the scraper (2), and when the scraper (2) slides in the upper groove part and the lower groove part of the middle groove (1), the four coal pushing shovels (3) move along with the scraper (2).

5. The multipoint distribution driven scraper conveyor pan of claim 1, wherein: the four auxiliary scraper wheels (4) are respectively fixed in four grooves at the tail of the scraper (2) through bolts, and the four auxiliary scraper wheels (4) move along with the scraper (2) and keep moving or stopping along with the scraper (2) in a rolling mode.

6. The multipoint distribution driven scraper conveyor pan of claim 1, wherein: the left side and the right side of the scraper (2) are respectively provided with a plurality of tooth holes meshed with the gear teeth of the transmission mechanism (5), the tooth holes are arranged at intervals on the same horizontal plane, and the distance between the tooth holes is equal to the distance between the meshed gear teeth.

7. The use method for implementing the middle trough of the multipoint distribution driven scraper conveyor as claimed in claim 1 is characterized by comprising the following steps:

a. when the coal mining machine works, the scraper chain drives the scrapers (2) to do flexible motion in the scraper conveyor, and when one scraper (2) passes through the upper groove part of the middle groove (1), the scraper chain scrapes coal blocks mined by the coal mining machine, which are the same as the traditional scrapers;

b. two permanent magnet synchronous motors (6) arranged at the lower groove parts at the left side and the right side of the same end output power and transmit the power through a worm gear of a transmission mechanism (5);

c. when the scraper (2) enters the lower groove part of the middle groove (1), the rotating worm wheel is meshed with the tooth holes on the side wall of the scraper (2) to transmit power to the scraper (2), so that the aims of sharing the motor power of the head and the tail of the scraper conveyor and improving the overall working efficiency are fulfilled;

d. in work, the steps b to c are repeated, and multipoint distribution driving of the scraping plate (2) by each middle groove (1) is achieved.

Technical Field

The invention relates to a middle groove of a scraper conveyor and a using method thereof, in particular to a middle groove of a multipoint distribution drive type scraper conveyor suitable for a scraper conveyor of a coal mine underground coal face and a using method thereof.

Background

In the coal face, the scraper conveyor serves not only to convey coal and material, but also to convey the running track of the shearer. Meanwhile, the scraper conveyor is core equipment of a fully mechanized coal mining face of an underground coal mine, can be used for horizontal transportation and inclined transportation, and the safety performance and the working reliability of the scraper conveyor directly influence the safety production and the working efficiency of the coal mine. Whether the scraper conveyor can work normally or not directly influences the production efficiency. If the scraper conveyor has problems, the whole coal mining working face stops production, and the working face cannot continue to work. The scraper conveyor is used as main transportation equipment of a fully mechanized mining face, has the defects of high equipment investment and severe operation working conditions, and the selection of a driving mode is the key for determining whether the equipment can operate reliably and efficiently. With the continuous progress of science and technology and the continuous demand of replacing human work by robots, the research and application of artificial intelligence in coal mines are rapidly developed. To realize key process intellectualization, key post robot substitution, intelligent production process control and key field intelligent factory building, future coal mines realize production equipment networking and production site unmanned, which provides reference guidance for intelligent coal mine development. The problem of how to improve the intelligent level and the mining efficiency of coal is a great problem to be solved urgently in the industry.

At present, the gap between the overall design and manufacture of scraper conveyors in China and developed countries is decreasing year by year, but a large gap still exists in the technical aspect. The conveying capacity and the service life of key parts are realized. The conveying capacity of the scraper conveyor in advanced countries is almost twice that of China. The electromechanical integration of developed countries, and the successful application of monitoring equipment and fault diagnosis system, etc. not only ensure the quality and safety of equipment operation, but also have strong promotion effect on the improvement of transmission power and production capacity.

The idea of multi-point driving of a mining belt conveyor (the belt conveyor is an important device for conveying bulk materials, the requirements of long-distance and large-conveying-capacity belt conveyors in engineering application are more and more, the engineering requirements for long distance and heavy load of the belt conveyor are more and more remarkable, the traditional single-point driving belt conveyor cannot meet the industrial requirements, and the multi-point driving mode of the belt conveyor is developed by following the traditional single-point driving belt conveyor), a permanent magnet synchronous motor is added into a middle groove, the number of the middle grooves with auxiliary driving is increased or decreased according to the conveying capacity requirements, and the multi-point distribution driving scraper conveyor is realized.

In the field of mining equipment, a cutting part of mine excavation equipment, a belt conveyor, a scraper conveyor, a mine hoist and other equipment driving systems in mine transportation equipment mostly adopt an alternating current asynchronous motor driving technology at present, and the alternating current asynchronous motor driving technology is a traction technology for driving a load to work by utilizing an alternating current asynchronous motor. In practical application, however, in order to cope with the operation conditions of low rotating speed and large torque, a speed reducer must be connected between the alternating current asynchronous motor and the load. Therefore, when the model is designed and selected, a large power margin is needed to meet the requirement of large torque in the heavy-load starting process of the mining equipment, and the motor is often operated under the conditions of low efficiency and high energy consumption. This results in a reduction in the face extraction efficiency, with economic losses and waste. By adopting the permanent magnet synchronous motor, the permanent magnet can generate a permanent magnetic field after being magnetized, exciting current is not needed, the power factor can be greatly improved, and the transmission efficiency and the load factor are higher; the permanent magnet synchronous motor can generate a low-rotating-speed and high-torque mature effect, meets the requirement of high driving torque, and is very suitable for the working conditions of heavy-load starting and low-custom running of a driving system of mine excavation and transportation equipment. Therefore, the design of a novel scraper conveyor structure with more flexibility and stronger conveying capacity has important significance.

Disclosure of Invention

The technical problem is as follows: the invention aims to overcome the defects in the prior art and provides the middle groove of the multipoint distribution driving type scraper conveyor, which has the advantages of compact structure, simplicity in operation, improved conveying capacity and good use effect.

The technical scheme is as follows: the invention provides a multipoint distribution driving type scraper conveyor middle groove, which comprises a middle groove and scrapers, wherein lower groove parts on the left side and the right side of the same end of all the middle grooves are respectively provided with a transmission mechanism and a permanent magnet synchronous motor connected with the transmission mechanism; two ends of the front side of the scraper are respectively provided with a scraper coal pushing shovel so as to realize shoveling broken coal powder in the advancing process and reduce the broken coal powder entering the joint surface of the middle groove and the scraper; the scraper is drawn by the scraper chain to do winding motion along the scraper conveyor, and when reaching the lower groove part of each middle groove, the tooth holes on the left side and the right side of the scraper are meshed with the gear teeth of the transmission mechanism driven by the permanent magnet synchronous motor, so that point position distribution driving of the scraper is realized.

The transmission mechanism comprises a worm connected with a transmission shaft of the permanent magnet synchronous motor and a worm wheel meshed with the worm, the worm wheel is horizontally and transversely sleeved on two sides of the same end of the lower groove part of the middle groove, and the worm wheel only horizontally and transversely rotates by fixing the longitudinal movement of the worm wheel through the worm.

The permanent magnet synchronous motors are respectively arranged below the lower groove parts at the left side and the right side of the same end of the middle groove, the position direction of each permanent magnet synchronous motor is parallel to the advancing direction of the scraper, and the output shaft of each permanent magnet synchronous motor is connected with the worm of the transmission mechanism.

Four scraper blades are respectively welded at four corners of the front end of each scraper blade, and when the scraper blades slide in the upper groove part and the lower groove part of the middle groove, the four scraper blades push the coal shovels to move along with the scraper blades.

The four auxiliary scraper wheels are respectively fixed in four grooves at the tail part of the scraper through bolts, and move along with the scraper and keep moving or stopping along with the scraper in a rolling manner.

The left side and the right side of the scraper are respectively provided with a plurality of tooth holes meshed with gear teeth of the transmission mechanism, the tooth holes are arranged at intervals on the same horizontal plane, and the distance between the tooth holes is equal to the distance between the meshed gear teeth.

The method for implementing the middle groove of the multipoint distribution drive type scraper conveyor comprises the following steps:

a. when the coal mining machine works, the scraper chain drives the scrapers to perform flexible motion in the scraper conveyor, and when one scraper passes through the upper groove part of the middle groove, the scraper chain scrapes coal blocks mined by the coal mining machine, which are the same as the traditional scrapers;

b. two permanent magnet synchronous motors arranged at the lower groove parts at the left side and the right side of the same end output power and transmit the power through a worm gear of a transmission mechanism;

c. when the scraper enters the lower groove part of the middle groove, the rotating worm wheel is meshed with the tooth holes on the side wall of the scraper to transmit power to the scraper, so that the aims of sharing the motor power of the head and the tail of the scraper conveyor and improving the overall working efficiency are fulfilled;

d. and in the work, repeating the steps b to c to realize the multipoint distribution driving of each middle groove to the scraper.

Has the advantages that: due to the adoption of the technical scheme, the driving system is added in each section of the middle groove, the design structure is simple, two symmetrical openings for accommodating the gears are designed on the outer side wall of the lower groove part of the middle groove, the kinetic energy is transmitted by the two permanent magnet synchronous motors, and the scraper is driven in a gear meshing mode; the motors are arranged on two horizontal sides of the same middle groove in overlooking mode, and the pushing and pulling of the scraping plate cannot be influenced; and then, combining the production requirements, and adding the required quantity of the middle grooves of the multipoint distribution driving type scraper conveyor into the middle groove section of the scraper conveyor. The chain scraper has important significance in the aspects of improving the conveying capacity of the traditional scraper conveyor, improving the strength of the chain, reducing the power and the size of a head motor and a tail motor of the scraper conveyor and the like. And the number of the middle grooves which are independently driven is configured according to the transportation capacity requirement, and the coordinated operation of the middle grooves driven by multiple points is realized through a reasonable coordination control strategy. The problem of traditional scraper blade during operation because of broken coal powder card goes into scraper blade and slot part lateral wall contact surface about the middle part groove and leads to frictional force great, influence work efficiency has effectively been solved. The method has important significance for improving the coal conveying amount of the coal face.

Drawings

Fig. 1 is a schematic perspective view of a center pan of a multipoint distribution driven flight conveyor of the present invention.

Fig. 2 is a front view structural view of a middle trough of the multipoint distribution drive type scraper conveyor of the invention.

Fig. 3 is a top view structural view of a middle trough of the multipoint distribution drive type flight conveyor of the present invention.

Fig. 4 is a left side view structural view of the middle tank of the multipoint distribution driven scraper conveyor of the present invention.

Fig. 5 is a perspective view of the scraper of the middle trough of the multipoint distribution driven scraper conveyor of the present invention.

FIG. 6 is a schematic diagram of the transmission structure of the middle trough of the multipoint distribution driven scraper conveyor of the invention on the right side.

Fig. 7 is a schematic left side view of the transmission structure of the middle trough of the multipoint distribution driven scraper conveyor of the invention.

Fig. 8 is a schematic view of the working states of the permanent magnet synchronous motor, the transmission mechanism and the scraper of the middle groove of the multipoint distribution driving scraper conveyor.

In the figure: 1-a middle trough; 2-a scraper; 3-scraping coal pushing shovel; 4-a scraper auxiliary wheel; 5-a transmission mechanism; 6-permanent magnet synchronous motor.

Detailed Description

The invention will be further described with reference to examples in the drawings to which:

the invention discloses a middle groove of a multipoint distribution driving type scraper conveyor, which comprises a middle groove 1 and scrapers 2, wherein lower groove parts on the left side and the right side of the same end of all the middle grooves 1 are respectively provided with a transmission mechanism 5 and a permanent magnet synchronous motor 6 connected with the transmission mechanism 5, the transmission mechanism 5 comprises a worm connected with a transmission shaft of the permanent magnet synchronous motor 6 and a worm wheel meshed with the worm, the worm wheel is horizontally and transversely sleeved on the two sides of the same end of the lower groove part of the middle groove 1, and the worm wheel only horizontally and transversely rotates by fixing the longitudinal movement of the worm wheel through the worm. The permanent magnet synchronous motors 6 arranged below the lower groove parts at the left side and the right side of the same end of the middle groove 1 are respectively one, the position direction of each permanent magnet synchronous motor 6 is parallel to the advancing direction of the scraper 2, and the output shaft of each permanent magnet synchronous motor 6 is connected with the worm of the transmission mechanism 5. The left side and the right side of the scraper 2 are respectively provided with a plurality of tooth holes meshed with the gear teeth of the transmission mechanism 5, the tooth holes meshed with the gear teeth of the transmission mechanism 5 are respectively arranged on the left side and the right side of the scraper 2 and are arranged at intervals on the same horizontal plane, and the tooth hole distance is equal to the gear tooth distance of the meshing. Two sides of the upper end surface of the scraper 2 are symmetrically provided with auxiliary scraper wheels 4 which slide along the upper groove part and the lower groove part on the two sides of the middle groove 1 so as to reduce the resistance of the scraper 2 in the advancing process; the four auxiliary scraper wheels 4 are respectively fixed in four grooves at the tail of the scraper 2 through bolts, and the four auxiliary scraper wheels 4 move along with the scraper 2 and keep moving or stopping along with the scraper 2 in a rolling mode. Two ends of the front side of the scraper 2 are respectively provided with a scraper coal pushing shovel 3 so as to realize shoveling broken coal powder in the advancing process and reduce the broken coal powder entering the joint surface of the middle groove 1 and the scraper 2; scraper blade coal pushing shovel 3 be four, weld respectively on four angles of 2 front ends of scraper blade, when scraper blade 2 slided in the upper and lower slot part of middle part groove 1, four scraper blades pushed coal shovel 3 followed scraper blade 2 and moved. The scraper 2 is drawn by the scraper chain to do winding motion along the scraper conveyor, when reaching the lower groove part of each middle groove 1, the tooth holes at the left side and the right side of the scraper 2 are meshed with the gear teeth of the transmission mechanism 5 driven by the permanent magnet synchronous motor 6, and point position distribution driving of the scraper 2 is realized.

The method for implementing the middle groove of the multipoint distribution drive type scraper conveyor comprises the following specific steps:

a. when the coal mining machine works, the scraper chain drives the scrapers 2 to do flexible motion in the scraper conveyor, and when one scraper 2 passes through the upper groove part of the middle groove 1, the coal mining machine scrapes coal blocks mined by the coal mining machine as the traditional scraper;

b. two permanent magnet synchronous motors 6 arranged at the lower groove parts at the left side and the right side of the same end output power and transmit the power through a worm gear of a transmission mechanism 5;

c. when the scraper 2 enters the lower groove part of the middle groove 1, the rotating worm wheel is meshed with the tooth holes on the side wall of the scraper 2 to transmit power to the scraper 2, so that the aims of sharing the motor power of the head and the tail of the scraper conveyor and improving the overall working efficiency are fulfilled;

d. in work, the steps b to c are repeated, and multipoint distribution driving of the scraper 2 by each middle groove 1 is achieved.

As shown in fig. 1, 2, 3 and 4, the scraper 2 runs in the upper groove part of the middle groove 1 along the traction direction of the scraper chain to scrape the coal blocks mined by the coal mining machine on the working face; scraper chain and scraper blade are the circuitous motion of wraparound in scraper conveyor, and when scraper blade 2 circulated to middle part groove 1 lower slot portion, every section multiple spot distributed drive formula scraper conveyor middle part groove two PMSM 6 transmitted power to scraper blade 2, the traction force of the scraper chain that the motor that combines complete machine aircraft nose and tail drove has improved scraper conveyor's work efficiency greatly.

As shown in fig. 5, the tooth holes on the side surfaces of the two ends of the scraper 2 are used for being meshed with the gear of the transmission mechanism 5, and when the coal pushing shovel 3 of the scraper advances along with the scraper 2, most of scattered coal blocks are removed and shoveled, so that the contact surfaces of the upper groove part and the lower groove part of the scraper 2 and the middle groove 1 are ensured to be clean, the contact surfaces are prevented from being blocked and blocked, the auxiliary wheel 4 of the scraper can slide smoothly to the greatest extent, and the wheel blocking situation is reduced; the squeegee auxiliary wheel 4 reduces the frictional resistance when the squeegee 2 contacts the inner walls of the upper and lower groove portions of the middle tank 1.

As shown in fig. 6 and 7, the transmission mechanisms 5 are positioned at two symmetrical sides of one end of the lower groove part of the middle groove 1, the gears are horizontally assembled on the middle groove 1 through screws, the permanent magnet synchronous motor 6 transmits power to the gears through the worm, when the scraper 2 passes through the lower groove part of the middle groove 1, the gears rotate to engage with tooth holes at two sides of the scraper 2, and then drive force is provided for the scraper 2 on the basis of traction force of the scraper chain; the scraper chain and the scraper 2 circularly and flexibly operate in the scraper conveyor, so that the coal conveying amount of the coal mining surface is increased.

Fig. 8 is a schematic diagram showing the operation of the blade 2, the transmission 5, and the permanent magnet synchronous motor 6.