A coal mining machine rocker arm follow-up system

Abstract

The present application relates to a rocker arm follow-up system for a coal mining machine, and relates to the field of coal mining machines. The system includes a support arm, a connecting rod provided on the support arm, one end of the connecting rod being connected to the support arm, and the other end of the connecting rod being connected to the rocker arm; the support arm swings synchronously with the rocker arm via the connecting rod; and a spray assembly for spraying dust on the working surface of the cutting portion, the spray assembly being provided on the support arm, and the spray assembly swings synchronously with the support arm. In the present application, due to the provision of the connecting rod, the support arm can maintain a certain distance from the cutting portion, thereby greatly reducing the probability of the cut coal blocks colliding with the spray assembly, and thus providing a better protective effect for the spray assembly.

Description

Technical Field

[0001] The present application relates to the field of coal mining machines, and in particular to a rocker arm follow-up system for coal mining machines. Background Art

[0002] A coal mining machine generally consists of a cutting unit, a loading unit, a traveling unit (traction unit), an electric motor, an operating control system, and auxiliary devices. The outer ring sidewall of the cutting unit is equipped with picks for cutting and crushing the coal seam. During coal mining, as the cutting unit rotates, the picks can cut and crush the coal seam. The cutting unit is also connected to a rocker arm, which is mainly driven by a dedicated electric motor. The motor controls the up and down swing of the rocker arm, which can then drive the cutting unit to achieve synchronous swinging, allowing the cutting unit to perform coal cutting work more flexibly.

[0003] The coal mining process generates a significant amount of coal dust and fine dust. To ensure safety and air quality during the mining process, a spray dust suppression assembly is installed on the cutting section to reduce dust from the working surface. However, during the actual mining process, a large amount of cut coal will directly fall onto the cutting section, making the nozzle of the spray dust suppression assembly highly susceptible to being struck by coal. Once the nozzle is deformed by the impact, it will eventually fail to properly spray and reduce dust. Summary of the Invention

[0004] In order to improve the problem that the nozzle of the spray dust suppression assembly is easily hit by coal blocks, the present application provides a coal mining machine rocker arm follow-up system.

[0005] The present application provides a coal mining machine rocker arm follow-up system, which adopts the following technical solutions:

[0006] It includes a support arm, a connecting rod is provided on the support arm, one end of the connecting rod is used to connect with the support arm, and the other end of the connecting rod is used to connect with the rocker arm; the support arm keeps synchronous swinging with the rocker arm through the connecting rod; a spray assembly is used to spray dust on the working surface of the cutting part, the spray assembly is set on the support arm, and the spray assembly swings synchronously with the support arm.

[0007] By adopting the above technical solution, after the support arm is connected to the rocker arm through the connecting rod, the support arm can now swing synchronously with the rocker arm; due to the setting of the connecting rod, the support arm can maintain a certain distance from the cutting part, thereby greatly reducing the probability of the cut coal blocks hitting the spray assembly, and thus having a better protective effect on the spray assembly; in addition, since the support arm can swing synchronously with the rocker arm during operation, the spray assembly can automatically adjust the spray position following the swing of the rocker arm, ensuring the spray dust reduction effect of the spray assembly on the working surface of the cutting part.

[0008] Optionally, the support arm is slidably arranged on the connecting rod, and a first driving component is provided on the support arm, and the first driving component is used to drive the support arm to slide on the connecting rod.

[0009] By adopting the above technical solution, when the cutting part is cutting coal, the support arm can be driven to move along the connecting rod toward or away from the cutting part by starting the first drive component; the spraying effect of the spray component can be ensured by adjusting the position of the support arm to an appropriate position; and when there are a large number of coal blocks flying around, the support arm can be moved away from the cutting part by the first drive component, thereby increasing the distance between the support arm and the cutting part, thereby effectively reducing the risk of the spray component on the support arm being hit by coal blocks.

[0010] Optionally, a sliding seat is slidably provided on the support arm, and the sliding direction of the sliding seat is perpendicular to the sliding direction of the support arm on the connecting rod; a driving member for driving the sliding seat to slide is also provided on the support arm, and the spray assembly is provided on the sliding seat.

[0011] By adopting the above technical solution, the sliding seat can drive the spray assembly to slide on the support arm under the drive of the driving member, thereby achieving the purpose of adjusting the spray position of the spray assembly. By adjusting the spray position of the spray assembly to an appropriate position, the working surface of the cutting part can be sprayed better and more comprehensively, further improving the spray effect of the spray assembly.

[0012] Optionally, a swing seat is rotatably provided on the sliding seat, a second drive assembly is provided on the sliding seat, the second drive assembly is connected to the swing seat, and the second drive assembly is used to drive the swing seat to swing on the sliding seat; the spray assembly is arranged on the sliding seat through the swing seat.

[0013] By adopting the above technical solution, after starting the second drive component, the swing seat will swing around the rotating axis of the sliding seat under the drive of the second drive component, thereby achieving the purpose of adjusting the swing angle of the swing seat. At this time, the spray angle of the spray assembly will be synchronously adjusted following the swing of the swing seat; by adjusting the spray angle of the spray assembly to an appropriate position, the spray range of the spray assembly can be made wider, thereby realizing multi-angle adjustment of the spray range of the spray assembly.

[0014] Optionally, a lighting assembly and a camera assembly are provided on the swing seat. The lighting assembly is used to provide lighting for the working surface of the cutting part, and the camera assembly is used to obtain the working screen of the cutting part in real time and transmit the obtained image information back to the background terminal in real time.

[0015] By adopting the above technical solution, since the lighting component, camera component and spray component are all arranged on the swing seat, the position and angle of the three can be adjusted synchronously by adjusting the position and angle of the swing seat; the lighting component can provide lighting for the working surface of the cutting part, thereby facilitating the staff to observe the working conditions of the cutting part; and the camera component can obtain the working picture of the cutting part in real time, and the obtained image information can be transmitted back to the background terminal in real time, thereby facilitating the rear staff to obtain and understand the on-site work information in a timely manner.

[0016] Optionally, the support arm includes a connecting portion and a mounting portion, and the connecting portion is rotatably connected to the mounting portion; a third driving component is provided on the connecting portion, and the third driving component is connected to the mounting portion, and the third driving component is used to drive the mounting portion to rotate on the connecting portion; the sliding seat is slidably provided on the mounting portion.

[0017] By adopting the above technical solution, since the connecting part and the mounting part are connected by rotation, the mounting part can be controlled to rotate on the connecting part by starting the third driving component. By controlling the rotation of the mounting part, the direction of the sliding seat can be further adjusted, thereby increasing the adjustment range of the sliding seat; thereby, the lighting assembly, camera assembly and spray assembly arranged on the sliding seat can better complete their respective tasks.

[0018] Optionally, a partition seat is provided on the connecting portion, a receiving cavity is formed on the partition seat, an opening of the receiving cavity is located on the rotation path of the swing seat, and the receiving cavity is used for the swing seat to rotate into.

[0019] By adopting the above technical solution, when the cutting part completes the coal cutting work, the third driving component can be started to control the rotation of the mounting part, so that the swing seat is rotated from the opening of the storage cavity into the storage cavity. By rotating the swing seat into the storage cavity, the lighting component, camera component and spray component on the swing seat can be stored to protect the three; reduce the pollution of the lighting component, camera component and spray component in the idle state by the outside world, and effectively prevent the probability of falling coal blocks hitting the swing seat.

[0020] Optionally, a brush is provided on the side wall of the opening surface of the storage cavity, and the brush blocks the opening of the storage cavity from the external environment. A cleaning cotton cloth is detachably mounted on the inner side wall of the storage cavity.

[0021] By adopting the above technical solution, when the swing seat is rotated from the opening of the storage cavity into the storage cavity, the brush arranged on the side wall of the opening surface of the storage cavity can be used to perform preliminary cleaning on the coal ash remaining on the surface of the lighting component, the camera component and the spray component, thereby reducing the residual coal ash from following the swing seat into the storage cavity, thereby ensuring the cleanliness of the inside of the storage cavity; after the swing seat is rotated into the storage cavity, the cleaning cotton cloth arranged on the inner side wall of the storage cavity can be used to wipe the surface of the lighting component, the camera component and the spray component again, thereby reducing the adverse effects of the residual coal ash on the lighting component and the camera component, thereby ensuring that the lighting component and the camera component can work normally.

[0022] Optionally, an air jet assembly is provided on the side wall of the mounting portion facing away from the swing seat, and the air jet port of the air jet assembly is used to jet air toward the working surface of the cutting portion.

[0023] By adopting the above technical solution, when the swing seat follows the mounting part to rotate into the storage chamber, the jet assembly will follow the mounting part to rotate out from the other outlet of the storage chamber; by starting the jet assembly, the working surface of the cutting part can be sprayed, so that after the cutting part completes the coal cutting work, an air pressure barrier can be formed on one side of the mounting part, thereby effectively suppressing the diffusion of coal ash toward the direction close to the support arm; in addition, the jet assembly can also suppress the diffusion of gas when gas leakage occurs in the mine.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. Greatly reduce the probability of the cut coal blocks hitting the spray assembly, thus providing better protection for the spray assembly;

[0026] 2. The purpose of adjusting the spray position of the spray assembly can be achieved. By adjusting the spray position of the spray assembly to an appropriate position, the working surface of the cutting part can be sprayed better and more comprehensively, further improving the spray effect of the spray assembly;

[0027] 3. The lighting component can provide lighting for the working surface of the cutting part, making it easier for staff to observe the working conditions of the cutting part; and the camera component can obtain the working picture of the cutting part in real time, and transmit the acquired image information back to the background terminal in real time, making it easier for rear staff to obtain and understand on-site work information in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application installed on a coal mining machine.

[0029] Figure 2 yes Figure 1 Schematic diagram of the structure from another perspective.

[0030] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0031] Figure 4 yes Figure 3 Schematic diagram of the local structure explosion structure.

[0032] Figure 5 yes Figure 4 Schematic diagram of the explosion structure from another perspective.

[0033] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0034] Explanation of the accompanying drawings: 1. Support arm; 10. Connecting rod; 101. Driving member; 11. Connecting part; 12. Mounting part; 13. Third driving assembly; 121. Slide; 2. Spraying assembly; 20. Nozzle; 3. First driving assembly; 30. Driving seat; 31. First cylinder; 4. Sliding seat; 40. Swinging seat; 5. Second driving assembly; 50. Second cylinder; 51. Return spring; 6. Lighting assembly; 7. Camera assembly; 8. Partition seat; 81. Storage chamber; 82. Brush; 83. Cleaning cotton cloth; 9. Jet assembly. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In this document, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates an "or" relationship between the related objects.

[0038] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0039] The embodiment of the present application discloses a coal mining machine rocker arm follow-up system. Figure 1 、 Figure 2The shearer rocker arm servo system includes a support arm 1, one end of which is mounted on the shearer. A connecting rod 10 is mounted on the support arm 1, perpendicular to the support arm 1. The support arm 1 slides along the length of the connecting rod 10. The connecting rod 10 is fixedly connected to the shearer rocker arm, and the support arm 1 swings synchronously with the rocker arm through the connecting rod 10.

[0040] like Figure 2 、 Figure 3 As shown, the support arm 1 includes a coaxially arranged connecting portion 11 and a mounting portion 12, and the connecting portion 11 and the mounting portion 12 are rotatably connected via a coupling. The connecting rod 10 is movably inserted into the connecting portion 11. A first drive assembly 3 is provided at the end of the connecting portion 11 away from the mounting portion 12. The first drive assembly 3 includes a drive seat 30 for slidingly mounting on the coal mining machine along the length direction of the connecting rod 10. The connecting portion 11 is rotatably mounted on the drive seat 30, and the rotation axis of the connecting portion 11 is coaxially arranged with the rotation axis of the rocker arm. The first drive assembly 3 also includes a first oil cylinder 31 for mounting on the coal mining machine. The piston rod of the first oil cylinder 31 is fixedly connected to the drive seat 30. The first oil cylinder 31 is used to drive the support arm 1 to slide along the length direction of the connecting rod 10.

[0041] like Figure 3 、 Figure 4 As shown, a third drive assembly 13 is provided at the connection between the connecting portion 11 and the mounting portion 12. In this embodiment, the third drive assembly 13 is an electric motor, and the output shaft of the third drive assembly 13 is connected to the rotating shaft of the mounting portion 12 via a coupling. By starting the third drive assembly 13, the mounting portion 12 and the connecting portion 11 can be driven to rotate relative to each other.

[0042] like Figure 4 、 Figure 5 As shown, the mounting portion 12 is provided with a slideway 121 extending along the length of the mounting portion 12. The sliding seat 4 is slidably mounted within the slideway 121. The sliding direction of the sliding seat 4 is perpendicular to the sliding direction of the support arm 1 on the connecting rod 10. A driving member 101 is mounted on the mounting portion 12 for driving the sliding seat 4 to slide. In this embodiment, the driving member 101 can also be implemented as a cylinder. The piston rod of the driving member 101 extends and retracts along the sliding direction of the sliding seat 4, and the piston rod of the driving member 101 is fixedly connected to the sliding seat 4. The driving member 101 can drive the sliding seat 4 to slide along the slideway 121 in a direction toward or away from the connecting portion 11.

[0043] like Figure 5 、 Figure 6As shown, a swing seat 40 is rotatably mounted on the sliding seat 4. The sliding seat 4 is also provided with a second drive assembly 5 for driving the swing seat 40 to swing left and right. The second drive assembly 5 includes a second oil cylinder 50 and a return spring 51. The second oil cylinder 50 and the return spring 51 are symmetrically arranged on either side of the rotation axis of the swing seat 40. The second oil cylinder 50 is rotatably mounted on the sliding seat 4, and the piston rod of the second oil cylinder 50 is rotatably connected to the swing seat 40. One end of the return spring 51 is fixedly connected to the sliding seat 4, and the other end of the return spring 51 is fixedly connected to the swing seat 40.

[0044] When the piston rod of the second oil cylinder 50 extends, the swing seat 40 will swing around the rotation axis between it and the sliding seat 4 in the direction close to the return spring 51, and the return spring 51 will be gradually compressed; when the piston rod of the second oil cylinder 50 retracts, the second oil cylinder 50 will drive the swing seat 40 to swing in the opposite direction, and the return spring 51 will assist the swing seat 40 to reset.

[0045] like Figure 3 、 Figure 4 As shown, a spray assembly 2 is mounted on the sidewall of the swing seat 40 facing away from the sliding seat 4. The spray assembly 2 includes a plurality of nozzles 20 spaced apart on the swing seat 40, and a water pipe for supplying water to each nozzle 20. The water pipe is connected to each corresponding nozzle 20. The water pipe is made of a relatively soft rubber material and is movably installed within the mounting portion 12. When the swing seat 40 swings, the water pipe rotates synchronously with the swing seat 40. Therefore, when installing the water pipe, it is necessary to reserve sufficient space for the water pipe to ensure that the water pipe can rotate with the mounting portion 12.

[0046] Driven by the drive member 101, the sliding seat 4 can cause the spray assembly 2 to slide on the mounting portion 12, thereby adjusting the spray position of the spray assembly 2. By adjusting the spray position of the spray assembly 2 to the appropriate position, the working surface of the cutting portion can be sprayed better and more comprehensively, further improving the spraying effect of the spray assembly 2. In addition, by activating the second drive assembly 5, the swing seat 40 will swing around the rotation axis of the sliding seat 4 under the drive of the second drive assembly 5, thereby adjusting the swing angle of the swing seat 40. At this time, the spray angle of the spray assembly 2 will be synchronously adjusted with the swing of the swing seat 40. By adjusting the spray angle of the spray assembly 2 to the appropriate position, the spray range of the spray assembly 2 can be expanded, thereby achieving multi-angle adjustment of the spray range of the spray assembly 2.

[0047] like Figure 4 、 Figure 5As shown, the side wall of the swing seat 40 facing away from the sliding seat 4 is also equipped with a lighting assembly 6 and a camera assembly 7. The lighting assembly 6 includes multiple lights arranged in a sequential order, and the camera assembly 7 includes a camera connected to the back-end terminal. The lighting assembly 6 is used to illuminate the working surface of the cutting section, thereby facilitating staff to observe the working conditions of the cutting section. The camera assembly 7 is used to capture the working image of the cutting section in real time and transmit the captured image information back to the back-end terminal in real time, thereby facilitating the back-end staff to obtain and understand the on-site working image information in a timely manner.

[0048] like Figure 4 、 Figure 5 As shown, a partition seat 8 is mounted and fixed to the outer wall of the connecting portion 11, facing away from the working surface of the cutting portion. A receiving cavity 81 for accommodating the swing seat 40 is formed between the partition seat 8 and the outer wall of the mounting portion 12. The receiving cavity 81 has two openings, symmetrically arranged on the left and right sides of the receiving cavity 81. The openings of the receiving cavity 81 are located in the rotation path of the swing seat 40, and the receiving cavity 81 is used to allow the swing seat 40 to rotate into the partition seat 8.

[0049] After the cutting unit completes its coal cutting operation, the third drive assembly 13 can be activated to control the mounting portion 12 to rotate on the connecting portion 11. As the mounting portion 12 rotates, the mounting portion 12 rotates the swing seat 40 from the opening of the storage chamber 81 into the partition seat 8. By rotating the swing seat 40 into the storage chamber 81, the lighting assembly 6, camera assembly 7, and spray assembly 2 on the swing seat 40 can be stored and protected. This reduces the risk of external contamination of the lighting assembly 6, camera assembly 7, and spray assembly 2 when idle, and effectively prevents the probability of falling coal blocks hitting the swing seat 40.

[0050] like Figure 4 、 Figure 5 As shown, brushes 82 are mounted on the sidewalls of the openings on both sides of the storage chamber 81. The brushes 82 are made of a flexible material. The brushes 82 can block the openings on both sides of the storage chamber 81, isolating the interior of the storage chamber 81 from the external environment. In addition, when the swing seat 40 rotates from the opening of the storage chamber 81 into the storage chamber 81, the brushes 82 mounted on the sidewalls of the opening of the storage chamber 81 can perform a preliminary cleaning of the soot remaining on the surfaces of the lighting assembly 6, the camera assembly 7, and the spray assembly 2. This can reduce the amount of soot that enters the storage chamber 81 along with the swing seat 40, ensuring the cleanliness of the interior of the storage chamber 81.

[0051] like Figure 4 、 Figure 5As shown, a cleaning cloth 83 is detachably mounted on the inner wall of the storage chamber 81. The cleaning cloth 83 is provided with a male Velcro strip, and a female Velcro strip is provided on the inner wall of the storage chamber 81 for interlocking with the male Velcro strip. The cleaning cloth 83 is secured to the inner wall of the storage chamber 81 by the interlocking male and female Velcro strips. After the swing seat 40 is rotated into the storage chamber 81, the cleaning cloth 83 mounted on the inner wall of the storage chamber 81 can be used to wipe the surfaces of the lighting assembly 6, camera assembly 7, and spray assembly 2 again, thereby reducing the adverse effects of residual soot on the lighting assembly 6 and camera assembly 7 and ensuring their normal operation.

[0052] like Figure 4 、 Figure 5 As shown, an air jet assembly 9 is provided on the side wall of the mounting portion 12 facing away from the swing seat 40. The air jet assembly 9 includes a plurality of air jet ports spaced in sequence along the length of the mounting portion 12. The air jet ports are connected to the air outlet of the air jet device through an air pipe. The air jet ports of the air jet assembly 9 are used to spray air toward the working surface of the cutting portion. When the swing seat 40 rotates into the storage chamber 81 following the mounting portion 12, the air jet assembly 9 will rotate out from the opening on the other side of the storage chamber 81 following the mounting portion 12. By activating the air jet device connected to the air jet assembly 9, the air jet ports of the air jet assembly 9 can spray air toward the working surface of the cutting portion, thereby forming an air pressure barrier on one side of the mounting portion 12 after the cutting portion completes the coal cutting work, thereby effectively suppressing the diffusion of coal ash toward the support arm 1. In addition, the air jet assembly 9 can also suppress the spread of gas when a gas leak occurs in the mine, providing workers with time to escape.

[0053] The implementation principle of the rocker arm follow-up system of a coal mining machine in the embodiment of the present application is as follows: after the support arm 1 is connected to the rocker arm through the connecting rod 10, the support arm 1 can then swing synchronously with the rocker arm. Due to the setting of the connecting rod 10, the support arm 1 can maintain a certain distance from the cutting part, thereby greatly reducing the probability of the cut coal blocks colliding with the spray assembly 2, the lighting assembly 6, and the camera assembly 7 on the swing seat 40, thereby achieving a better protection effect for the spray assembly 2, the lighting assembly 6, and the camera assembly 7. In addition, since the support arm 1 can swing synchronously with the rocker arm during operation, the spray assembly 2, the lighting assembly 6, and the camera assembly 7 can automatically adjust their positions following the swing of the rocker arm, ensuring the spray dust reduction effect of the spray assembly 2 on the working surface of the cutting part.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A coal mining machine rocker arm follow-up system, characterized in that: The invention comprises: a support arm (1), a connecting rod (10) being provided on the support arm (1), one end of the connecting rod (10) being used for connecting to the support arm (1), and the other end of the connecting rod (10) being used for connecting to the rocker arm; the support arm (1) is kept in synchronous swing with the rocker arm through the connecting rod (10); a spray assembly (2) being used for spraying dust on the working surface of the cutting part, the spray assembly (2) being provided on the support arm (1), and the spray assembly (2) is kept in synchronous swing with the support arm (1); The support arm (1) is slidably arranged on the connecting rod (10), and a first driving assembly (3) is arranged on the support arm (1), and the first driving assembly (3) is used to drive the support arm (1) to slide on the connecting rod (10); A sliding seat (4) is slidably provided on the support arm (1), and the sliding direction of the sliding seat (4) is perpendicular to the sliding direction of the support arm (1) on the connecting rod (10); a driving member (101) for driving the sliding seat (4) to slide is also provided on the support arm (1), and the spray assembly (2) is provided on the sliding seat (4); a swing seat (40) is rotatably provided on the sliding seat (4), and a second driving assembly (5) is provided on the sliding seat (4), the second driving assembly (5) is connected to the swing seat (40), and the second driving assembly (5) is used to drive the swing seat (40) to swing on the sliding seat (4); the spray assembly (2) is provided on the sliding seat (4) through the swing seat (40); The support arm (1) includes a connecting portion (11) and a mounting portion (12), wherein the connecting portion (11) is rotatably connected to the mounting portion (12); a third driving component (13) is provided on the connecting portion (11), wherein the third driving component (13) is connected to the mounting portion (12), and the third driving component (13) is used to drive the mounting portion (12) to rotate on the connecting portion (11); and the sliding seat (4) is slidably provided on the mounting portion (12).

2. A coal mining machine rocker arm servo system according to claim 1, characterized in that: The swing seat (40) is provided with a lighting assembly (6) and a camera assembly (7). The lighting assembly (6) is used to provide lighting for the working surface of the cutting part, and the camera assembly (7) is used to obtain the working picture of the cutting part in real time and transmit the obtained image information back to the background terminal in real time.

3. The coal mining machine rocker arm servo system according to claim 1, characterized in that: A partition seat (8) is provided on the connecting portion (11), and a receiving cavity (81) is formed on the partition seat (8). The opening of the receiving cavity (81) is located on the rotation path of the swing seat (40), and the receiving cavity (81) is used for the swing seat (40) to rotate into.

4. A coal mining machine rocker arm servo system according to claim 3, characterized in that: A brush (82) is provided on the side wall of the opening of the storage chamber (81), and the brush (82) blocks the opening of the storage chamber (81) from the external environment. A cleaning cotton cloth (83) is detachably mounted on the inner side wall of the storage chamber (81).

5. The rocker arm servo system for a coal mining machine according to claim 1, characterized in that: An air jet assembly (9) is provided on the side wall of the mounting portion (12) facing away from the swing seat (40), and the air jet port of the air jet assembly (9) is used to jet air toward the working surface of the cutting portion.

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