Crushing coal mining equipment

By introducing a crushing device into the coal mining equipment and using round rollers and tooth blocks to further crush the coal blocks, the problem of inconvenient coal blocks in the collection shovel is solved, and the efficiency and flexibility of the equipment are improved.

CN223423994UActive Publication Date: 2025-10-10BEIJING VICKY ENG DESIGNING CO LTD
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Patent Information

Application Number
CN202423053313.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-10-10
Estimated Expiration
2034-12-11

AI Technical Summary

Technical Problem

During the coal mining process, some larger coal lumps still remain in the collecting shovel, making it inconvenient to remove them manually.

Method used

A crushing coal mining equipment is designed, which includes a crushing device. By setting up round rollers, tooth blocks and conveyor belts, the coal blocks can be further crushed and conveyed, thereby improving the efficiency of removing the coal blocks from the collection shovel.

Benefits of technology

The flexibility and practicality of coal mining equipment are improved, ensuring that coal blocks can be effectively broken and conveniently transported out of the collection shovel.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides crushing coal mining equipment, and relates to the technical field of coal mining equipment, the crushing coal mining equipment comprises a vehicle body, a machine arm is rotatably arranged at the top end of the vehicle body, an output rod of a hydraulic rod is rotatably connected with one side of the top end of the machine arm, a crushing device is arranged in a collecting shovel, the crushing device comprises a round roller, and the round roller is rotatably connected with the machine arm. The crushing device is arranged, the first motor is operated to drive the round roller to rotate, coal briquettes are conveyed to the round roller through the conveying belt, the conveying belt is used for conveying the coal briquettes to the round roller, the conveying belt is used for conveying the coal briquettes to the round roller, and the conveying belt is used for conveying the coal briquettes to the round roller. The tooth blocks on the outer surface of the circular ring are used for further crushing coal briquettes entering the round roller on the surface of the conveying belt, the coal briquettes with large sizes are crushed and separated as much as possible, the conveying belt moves outwards so that the coal briquettes in the collecting shovel can be conveyed outwards conveniently, and the efficiency of taking the coal briquettes out of the collecting shovel is improved; and the flexibility and the practicability of the coal mining equipment in use are improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of coal mining equipment, in particular to a crushing coal mining equipment. Background Art

[0002] Coal mining operations generally involve two methods: mine mining and open-pit mining, due to the different burial depths of coal resources. However, only 7.5% of my country's reserves can be mined open-pit, and mine mining is the main method. A variety of coal mining equipment is used to assist in the mining process.

[0003] When using coal mining equipment to carry out coal mining work, the coal blocks inside the coal mine are broken by the breaker hammer on the top of the equipment and collected by the collecting shovel at the front end of the equipment. After the collection is completed, some larger coal mines still remain in the collecting shovel, which makes it inconvenient to manually remove and collect the coal blocks in the collecting shovel. Utility Model Content

[0004] The utility model aims to solve the problem that some large coal ore still exists in the collecting shovel after collection, which causes inconvenience in manually removing and collecting the coal blocks in the collecting shovel, and proposes a crushing coal mining device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a coal crushing and mining equipment, including a car body, the bottom end of the car body is provided with a crawler wheel for driving the car body to move, the top end of the car body is rotatably provided with an organic arm, the outer side of the organic arm is provided with a driving device for driving the organic arm to rotate, one end of the organic arm is rotatably provided with a breaker hammer, one end of the organic arm is provided with a driving motor for controlling the rotation of the breaker hammer, one end of the car body is rotatably connected to an organic rod, one end of the organic rod is fixedly connected to a collecting shovel, the front end of the car body is rotatably provided with a hydraulic rod, the output rod of the hydraulic rod is rotatably connected to one side of the top end of the organic rod, and the inside of the collecting shovel A crushing device is provided, which includes a circular roller, a plurality of circular rings fixedly connected to the outer surface of the circular roller, a plurality of tooth blocks fixedly connected to the outer surface of the circular ring, and the tooth blocks are circumferentially distributed on the outer surface of the circular ring. The two ends of the circular roller are rotatably connected to the two sides of the inner wall of the collecting shovel, and the bottom end of the inner wall of the collecting shovel is rotatably connected to two shafts, and the outer surfaces of the two shafts are provided with conveyor belts. A first motor and a second motor are respectively provided on one side of the collecting shovel, and the output ends of the first motor and the second motor rotate on one side of the inner wall of the collecting shovel, and the output ends of the first motor and the second motor are respectively fixedly connected to one end of the circular roller and one end of the shaft.

[0006] The effects achieved by the above components are as follows: by setting the tooth blocks, when using the coal mining equipment to mine coal, the vehicle body is moved by the crawler wheels at the bottom through remote control to allow the vehicle body to enter the coal mining area, and the driving motor at one end of the machine arm is operated to control the rotation of the breaker hammer, and the coal blocks in the coal mine are broken by the breaker hammer to make the coal blocks fall. At the same time, the driving device on one side of the machine arm can be operated to control the rotation of the machine arm to adjust the angle of the breaker hammer. The fallen coal blocks can be scooped up and collected by using the collection shovel through the movement of the vehicle body. After a single coal mining and collection work is completed, the hydraulic rod can be operated to retract and drive the machine arm to rotate upward to adjust the angle of the collection shovel, so that the collection shovel is tilted upward, and then the side of the collection shovel is operated The first motor drives the round roller to rotate, and at the same time, the second motor drives a shaft to rotate, so that the conveyor belt moves toward the inside of the collecting shovel, and the coal blocks are transported toward the round roller through the conveyor belt. The coal blocks entering the round roller on the surface of the conveyor belt are further crushed by the tooth blocks on the outer surface of several circular rings, and the larger coal blocks are crushed and separated as much as possible. Then, the hydraulic rod is extended to control the collecting shovel to tilt downward at a certain angle, and the second motor is operated in the opposite direction to control the conveyor belt to move away from the collecting shovel, so as to facilitate the outward transportation of the coal blocks inside the collecting shovel, thereby improving the efficiency of taking out the coal blocks from the collecting shovel and improving the flexibility and practicality of the coal mining equipment when used.

[0007] Preferably, a plurality of protrusions are fixedly connected to the outer surface of the ring, and the protrusions are distributed in a circular pattern on the outer surface of the ring.

[0008] The effect achieved by the above components is that when the circular roller rotates through the tooth block to crush the coal block, the coal block can be placed between the protrusion and the tooth block to improve the crushing effect of the coal block.

[0009] Preferably, an auxiliary groove is provided on the outer surface of the tooth block, and the auxiliary groove runs through the front and rear sides of the tooth block.

[0010] The effect achieved by the above components is: by setting the auxiliary groove, when the coal blocks enter between the protrusion and the tooth block for crushing, small coal blocks will pass through the auxiliary groove or be cut into smaller coal blocks by the auxiliary groove, and will not easily get stuck between the protrusion and the tooth block, thereby improving the crushing effect.

[0011] Preferably, one end of the inner wall of the collecting shovel is fixedly connected to a guide plate, and one end of the guide plate is located above the conveyor belt.

[0012] The effect achieved by the above components is that the guide plate makes it easier for the coal blocks entering the collecting shovel to enter the surface of the conveyor belt and not to accumulate at the front end of the collecting shovel.

[0013] Preferably, a baffle is fixedly connected to the inner wall of the collecting shovel, and the baffle is located above the circular roller.

[0014] The effect achieved by the above components is: when the first motor drives the round roller to rotate to crush the coal blocks, the baffle can block the top of the round roller, thereby preventing the round roller from rotating and throwing the coal blocks upward into the collection shovel as much as possible.

[0015] Preferably, a cleaning device is provided on one side of the machine arm, and the cleaning device includes a sliding rod, and a plurality of bristle brushes are fixedly connected to one side of the sliding rod. An electric push rod is provided on one side of the machine arm, and the output rod of the electric push rod is fixedly connected to one side of the sliding rod. A sliding groove is opened on one side of the machine arm, and one end of the sliding rod slides on the inner wall of the sliding groove.

[0016] The effect achieved by the above components is: when the coal mining equipment is not in use, the electric push rod can be operated to retract and control one end of the sliding rod to slide on the inner wall of the slide toward the direction of the breaker hammer, so that the outer surface of the sliding rod with a hard-bristle brush is located on one side of the breaker hammer, and then the driving device on the outer surface of the machine arm is operated to control the rotation of the breaker hammer, so that the breaker hammer contacts the outer surface of the hard-bristle brush, and the outer surface of the breaker hammer is swept and cleaned by the hard-bristle brush, which makes it easy to clean the surface of the breaker hammer quickly and conveniently, thereby improving the convenience of using the coal mining equipment.

[0017] Preferably, one end of the sliding rod is fixedly connected to two positioning blocks, and one side of the two positioning blocks slides on one side of the machine arm.

[0018] The effect achieved by the above components is: when the electric push rod is operated to control the movement of the sliding rod, one side of the two positioning blocks will slide on one side of the machine arm. The positioning blocks can limit the angle between the sliding rod and the machine arm, thereby avoiding the angle of the sliding rod from deflecting when it moves as much as possible.

[0019] Preferably, a collar is provided on the outer surface of the electric push rod, and the collar is located outside the connection between the power rod and the output rod of the electric push rod.

[0020] The effect achieved by the above components is: by setting the ring, the outer side of the connection between the power rod and the output rod of the electric push rod can be further sealed, thereby preventing dust inside the coal mine from entering the interior of the electric push rod and affecting the normal use of the electric push rod as much as possible.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] In the utility model, a crushing device is provided, the circular roller is driven to rotate by operating the first motor, and the coal blocks are conveyed toward the circular roller through the conveyor belt. The coal blocks entering the circular roller from the surface of the conveyor belt are further crushed by the tooth blocks on the outer surface of the circular ring, and the larger coal blocks are crushed and separated as much as possible. The conveyor belt is moved outward to facilitate the conveying of the coal blocks inside the collecting shovel, thereby improving the efficiency of taking the coal blocks out of the collecting shovel and improving the flexibility and practicality of the coal mining equipment when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the vehicle body of the present invention;

[0025] Figure 3 For this utility model Figure 2 A schematic diagram of a partially enlarged three-dimensional structure;

[0026] Figure 4 This is a schematic diagram of the partial cross-section of the collecting shovel of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the circular ring of the utility model.

[0028] Legend: 1. Vehicle body; 2. Crushing device; 3. Cleaning device; 4. Machine arm; 5. Breaking hammer; 6. Machine arm; 7. Collecting shovel; 8. Hydraulic rod; 21. First motor; 22. Roller; 23. Ring; 24. Tooth block; 25. Second motor; 26. Shaft; 27. Conveyor belt; 28. Auxiliary groove; 29. ​​Bump; 210. Guide plate; 211. Baffle; 31. Electric push rod; 32. Slide groove; 33. Sliding rod; 34. Brush; 35. Positioning block; 36. Ring. DETAILED DESCRIPTION

[0029] Example 1, as Figures 1-5As shown, a crushing coal mining equipment includes a car body 1, the bottom end of the car body 1 is provided with a crawler wheel for driving the car body 1 to move, the top of the car body 1 is rotatably provided with an organic arm 4, the outer side of the organic arm 4 is provided with a driving device for driving the organic arm 4 to rotate, one end of the organic arm 4 is rotatably provided with a breaker hammer 5, one end of the organic arm 4 is provided with a driving motor for controlling the rotation of the breaker hammer 5, one end of the car body 1 is rotatably connected to an organic rod 6, one end of the organic rod 6 is fixedly connected to a collecting shovel 7, the front end of the car body 1 is rotatably provided with a hydraulic rod 8, the output rod of the hydraulic rod 8 is rotatably connected to one side of the top of the organic rod 6, and the inside of the collecting shovel 7 is provided with a crushing device 2, and the crushing device 2 includes a round roller 22, the outer surface of the round roller 22 The surface is fixedly connected with a number of rings 23, the outer surface of the ring 23 is fixedly connected with a number of tooth blocks 24, the tooth blocks 24 are circumferentially distributed on the outer surface of the ring 23, the two ends of the round roller 22 are rotatably connected to the inner wall of the collecting shovel 7, the bottom end of the inner wall of the collecting shovel 7 is rotatably connected to two shafts 26, the outer surfaces of the two shafts 26 are provided with a conveyor belt 27, and the first motor 21 and the second motor 25 are respectively provided on one side of the collecting shovel 7. The output ends of the first motor 21 and the second motor 25 rotate on one side of the inner wall of the collecting shovel 7, and the output ends of the first motor 21 and the second motor 25 are respectively fixedly connected to one end of the round roller 22 and one end of the shaft 26. By setting the tooth blocks 24, the use of the collecting shovel 7 can be realized. When the coal equipment is mining, the vehicle body 1 is remotely controlled and moved through the crawler wheels at the bottom to allow the vehicle body 1 to enter the mining area. The driving motor at one end of the machine arm 4 is operated to control the rotation of the breaker hammer 5, and the coal blocks in the coal mine are broken and fall. At the same time, the driving device on one side of the machine arm 4 can be operated to control the rotation of the machine arm 4 to adjust the angle of the breaker hammer 5. The fallen coal blocks can be scooped up and collected by using the collection shovel 7 through the movement of the vehicle body 1. After a single coal mining and collection work is completed, the hydraulic rod 8 can be operated to retract and drive the machine rod 6 to rotate upward to adjust the angle of the collection shovel 7, so that the collection shovel 7 is tilted upward, and then the first motor 21 on one side of the collection shovel 7 is operated to drive the round roller 22 to rotate, and at the same time, the motor 21 on the side of the collection shovel 7 is operated to rotate. The second motor 25 drives a shaft 26 to rotate, so that the conveyor belt 27 moves toward the inside of the collecting shovel 7, and the coal blocks are transported toward the round roller 22 through the conveyor belt 27. The coal blocks entering the round roller 22 on the surface of the conveyor belt 27 are further crushed by the tooth blocks 24 on the outer surface of the rings 23, and the larger coal blocks are crushed and separated as much as possible. Then, the hydraulic rod 8 is extended to control the collecting shovel 7 to tilt downward at a certain angle, and the second motor 25 is operated to rotate in the opposite direction to control the conveyor belt 27 to move away from the collecting shovel 7, so as to facilitate the outward transportation of the coal blocks inside the collecting shovel 7, improve the efficiency of removing the coal blocks from the collecting shovel 7, and improve the flexibility and practicality of the coal mining equipment when in use.

[0030] Reference Figure 2 、 Figure 4 and Figure 5As shown in the figure, in the embodiment: the outer surface of the circular ring 23 is fixedly connected with a plurality of protrusions 29, which are circumferentially distributed on the outer surface of the circular ring 23. When the circular roller 22 rotates to crush the coal blocks through the tooth blocks 24, the crushing effect on the coal blocks can be improved by allowing the coal blocks to be between the protrusions 29 and the tooth blocks 24. The outer surface of the tooth block 24 is provided with an auxiliary groove 28, which penetrates the front and back of the tooth block 24. By providing the auxiliary groove 28, when the coal blocks enter the protrusions 29 and the tooth blocks 24 for crushing, small coal blocks can pass through or be cut into smaller coal blocks at the auxiliary groove 28, which is not easy to be stuck between the protrusions 29 and the tooth blocks 24 and improves the crushing effect.

[0031] Referring to Figure 2 , Figure 4 and Figure 5 As shown in the figure, in the embodiment: the inner wall of the collecting shovel 7 is fixedly connected with a guide plate 210 at one end, and the one end of the guide plate 210 is located above the conveying belt 27. By providing the guide plate 210, the coal blocks entering the inside of the collecting shovel 7 are more easily to enter the surface of the conveying belt 27 and are not easy to accumulate at the front end of the collecting shovel 7. The inner wall of the collecting shovel 7 is fixedly connected with a baffle 211, which is located above the circular roller 22. When the circular roller 22 is driven to rotate by the first motor 21 to crush the coal blocks, the baffle 211 can block the upper part of the circular roller 22 to avoid the coal blocks being thrown upward out of the inside of the collecting shovel 7 as much as possible.

[0032] Referring to Figures 1-4 As shown in the figure, in the embodiment: the side of the arm 4 is provided with a cleaning device 3, which includes a sliding rod 33, and a plurality of hard brushes 34 are fixedly connected to one side of the sliding rod 33. The side of the arm 4 is provided with an electric push rod 31, and the output rod of the electric push rod 31 is fixedly connected to one side of the sliding rod 33. The side of the arm 4 is provided with a sliding groove 32, and one end of the sliding rod 33 slides in the inner wall of the sliding groove 32. When the coal mining equipment is not used, the electric push rod 31 can be operated to retract the one end of the sliding rod 33 in the inner wall of the sliding groove 32 to slide in the direction of the crushing hammer 5, so that the outer surface of the sliding rod 33 provided with the hard brushes 34 is located at one side of the crushing hammer 5. Then the driving device on the outer surface of the arm 4 is operated to drive the crushing hammer 5 to rotate, so that the crushing hammer 5 contacts with the outer surface of the hard brushes 34. The outer surface of the crushing hammer 5 is cleaned by the hard brushes 34, which facilitates quick and convenient cleaning of the surface of the crushing hammer 5 and improves the convenience of using the coal mining equipment.

[0033] Referring to Figures 2-4As shown, in this embodiment: one end of the sliding rod 33 is fixedly connected to two positioning blocks 35, and one side of the two positioning blocks 35 slides on one side of the machine arm 4. When the electric push rod 31 is operated to control the movement of the sliding rod 33, one side of the two positioning blocks 35 will slide on one side of the machine arm 4. The positioning blocks 35 can limit the angle between the sliding rod 33 and the machine arm 4, and avoid the angle of the sliding rod 33 from being deflected when moving as much as possible. The outer surface of the electric push rod 31 is provided with a ring 36, and the ring 36 is located on the outside of the connection between the power rod and the output rod of the electric push rod 31. By providing the ring 36, the outside of the connection between the power rod and the output rod of the electric push rod 31 can be further sealed, and the dust inside the coal mine can be avoided as much as possible from entering the interior of the electric push rod 31 and affecting the normal use of the electric push rod 31.

[0034] Working principle: When using coal mining equipment for coal mining, the vehicle body 1 is remotely controlled and moved through the crawler wheels at the bottom to allow the vehicle body 1 to enter the coal mining area. The driving motor at one end of the machine arm 4 is operated to control the rotation of the breaker hammer 5, and the coal blocks in the coal mine are broken by the breaker hammer 5 to make the coal blocks fall. At the same time, the driving device on one side of the machine arm 4 can be operated to control the rotation of the machine arm 4 to adjust the angle of the breaker hammer 5. The fallen coal blocks can be scooped up and collected by the collection shovel 7 through the movement of the vehicle body 1. After a single coal mining and collection work is completed, the hydraulic rod 8 can be operated to contract and drive the machine rod 6 to rotate upward to adjust the angle of the collection shovel 7, so that the collection shovel 7 tilts upward, and then the first motor 21 on one side of the collection shovel 7 is operated to drive the round roller 22 to rotate. At the same time, the second motor 25 is operated to drive a shaft rod 26 to rotate, so that the conveyor belt 27 moves toward the inside of the collection shovel 7, and the coal blocks are transported toward the round roller 22 through the conveyor belt 27. The tooth blocks 24 on the outer surfaces of the rings 23 further crush the coal blocks on the surface of the conveyor belt 27 that enter the circular roller 22, and crush and separate the larger coal blocks as much as possible. Then, the hydraulic rod 8 is extended to control the collecting shovel 7 to tilt downward at a certain angle, and the second motor 25 is operated to rotate in the opposite direction to control the conveyor belt 27 to move away from the collecting shovel 7, so as to facilitate the transportation of the coal blocks inside the collecting shovel 7 outward. When the coal mining equipment is not in use, the electric push rod 31 can be operated to contract and control one end of the sliding rod 33 to slide on the inner wall of the slide 32 toward the direction of the breaker 5, so that the outer surface of the sliding rod 33 with the hard brush 34 is located on one side of the breaker 5, and then the driving device on the outer surface of the machine arm 4 is operated to control the rotation of the breaker 5, so that the breaker 5 contacts the outer surface of the hard brush 34, and the outer surface of the breaker 5 is swept and cleaned by the hard brush 34, so that the surface of the breaker 5 is quickly and conveniently cleaned.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A crushing coal mining device, comprising a vehicle body (1), characterized in that: The bottom end of the vehicle body (1) is provided with a crawler wheel for driving the vehicle body (1) to move, the top end of the vehicle body (1) is rotatably provided with an arm (4), the outer side of the arm (4) is provided with a driving device for driving the arm (4) to rotate, one end of the arm (4) is rotatably provided with a breaker hammer (5), one end of the arm (4) is provided with a driving motor for controlling the rotation of the breaker hammer (5), one end of the vehicle body (1) is rotatably connected to an organic rod (6), one end of the organic rod (6) is fixedly connected to a collecting shovel (7), the front end of the vehicle body (1) is rotatably provided with a hydraulic rod (8), the output rod of the hydraulic rod (8) is rotatably connected to one side of the top end of the organic rod (6), the inside of the collecting shovel (7) is provided with a crushing device (2), the crushing device (2) includes a round roller (22), the round roller (22) The outer surface of the roller (22) is fixedly connected to a plurality of circular rings (23), the outer surface of the circular ring (23) is fixedly connected to a plurality of tooth blocks (24), and the tooth blocks (24) are circumferentially distributed on the outer surface of the circular ring (23). The two ends of the circular roller (22) are rotatably connected to the two sides of the inner wall of the collecting shovel (7), and the bottom end of the inner wall of the collecting shovel (7) is rotatably connected to two shafts (26). The outer surfaces of the two shafts (26) are provided with conveyor belts (27). A first motor (21) and a second motor (25) are respectively provided on one side of the collecting shovel (7). The output ends of the first motor (21) and the second motor (25) rotate on one side of the inner wall of the collecting shovel (7). The output ends of the first motor (21) and the second motor (25) are respectively fixedly connected to one end of the circular roller (22) and one end of the shaft (26).

2. A crushing coal mining equipment according to claim 1, characterized in that: A plurality of protrusions (29) are fixedly connected to the outer surface of the circular ring (23), and the protrusions (29) are distributed in a circular pattern on the outer surface of the circular ring (23).

3. A crushing coal mining equipment according to claim 2, characterized in that: An auxiliary groove (28) is provided on the outer surface of the tooth block (24), and the auxiliary groove (28) runs through the front and rear sides of the tooth block (24).

4. A crushing coal mining equipment according to claim 3, characterized in that: One end of the inner wall of the collecting shovel (7) is fixedly connected to a guide plate (210), and one end of the guide plate (210) is located above the conveyor belt (27).

5. The crushing coal mining equipment according to claim 4, characterized in that: A baffle (211) is fixedly connected to the inner wall of the collecting shovel (7), and the baffle (211) is located above the round roller (22).

6. The crushing coal mining equipment according to claim 5, characterized in that: A cleaning device (3) is provided on one side of the machine arm (4), and the cleaning device (3) includes a sliding rod (33), and a plurality of bristle brushes (34) are fixedly connected to one side of the sliding rod (33). An electric push rod (31) is provided on one side of the machine arm (4), and an output rod of the electric push rod (31) is fixedly connected to one side of the sliding rod (33). A sliding groove (32) is provided on one side of the machine arm (4), and one end of the sliding rod (33) slides on the inner wall of the sliding groove (32).

7. The crushing coal mining equipment according to claim 6, characterized in that: One end of the sliding rod (33) is fixedly connected to two positioning blocks (35), and one side of the two positioning blocks (35) slides on one side of the machine arm (4).

8. The crushing coal mining equipment according to claim 6, characterized in that: The outer surface of the electric push rod (31) is provided with a collar (36), and the collar (36) is located outside the connection between the power rod and the output rod of the electric push rod (31).