Anti-channeling device for pin shaft of rocker arm of coal mining machine
By installing components such as limit blocks, movable rings, and springs on the rocker arm of the coal mining machine, the problem of pin movement was solved, the pin was firmly fixed, the stability and lifespan of the coal mining machine were improved, and the failure rate and maintenance costs were reduced.
Patent Information
- Application Number
- CN202520548182.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The rocker arm pin of a coal mining machine is prone to shifting during use, which can lead to mechanical failures and safety hazards. It may also loosen or fall off, affecting the stability and lifespan of the coal mining machine.
It adopts a combination structure of limit block, moving ring, convex ring and first spring, combined with rebound component, pulling component, fixed ring and cleaning brush, etc., to restrict the movement of the pin in the insertion hole, provide continuous lubrication and prevent it from falling off, and reduce friction and wear.
It effectively prevents pin movement, improves the stability and safety of the coal mining machine, extends the life of the pin, reduces the failure rate and maintenance costs, and improves operating efficiency.
Smart Images
Figure CN223781882U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the safe production field of coal mining area especially relates to a coal winning machine rocker arm pin shaft anti -channeling device. BACKGROUND
[0002] The coal winning machine is one of important equipment of coal mine production mechanization and modernization, it is a set up mechanical, hydraulic pressure, electrical in one big complex system, generally by cutting part, loading part, walking part, motor, operation control system and auxiliary device etc.
[0003] And the coal winning machine rocker arm is one of important components of coal winning machine, it mainly comprises rocker arm support, rocker arm body, connecting rod, pin shaft, piston and actuator etc., these components work cooperatively, realize the cutting and coal mining function of coal winning machine.
[0004] In long time use and observation, find in the process of using coal winning machine to carry out coal mining, the pin shaft on its rocker arm unexpectedly channeling out leads to the damage of rocker arm or other related components, and then influence the overall performance and life of coal winning machine.
[0005] Therefore we propose a coal winning machine rocker arm pin shaft anti -channeling device. CONTENT OF UTILITY MODEL
[0006] The utility model discloses a technical scheme: including rocker arm body, the rocker arm body lateral wall middle part is set with the bolt hole, the bolt hole inner lateral wall middle part is rotatably connected with the pin shaft body, the both ends of pin shaft body are fixed with the limit block, the rocker arm body inner lateral wall middle part is rotatably connected with the movable ring, the movable ring lateral wall middle part is fixed with the convex ring, the convex ring and rocker arm body rotatable connection, the movable ring and limit block between fixed with first spring, first spring is multiple and on limit block lateral wall on the circumferential array rule arrangement, the rocker arm body lateral wall middle part is equipped with the rebound subassembly, the rebound subassembly is a pair of and symmetric cover and is equipped in limit block outside, a pair of limit block between is equipped with the pulling subassembly, this step through setting limit block, movable ring, convex ring and first spring, can firmly limit pin shaft body in bolt hole interior, reduced because of the vibration or external force and lead to the pin shaft body channeling phenomenon, contribute to the normal operation of coal winning machine rocker arm, reduce because of pin shaft body channeling and lead to mechanical failure or security risk, and in the coal winning machine working process, pin shaft body will because of vibration or impact and gradually loosen, even fall off, this setting can effectively prevent the pin shaft body's fall off, contribute to the overall stability and safety of coal winning machine.
[0007] In further technical solutions, the rebound assembly includes a fixed cylinder fixed on the side wall of the rocker body, a second spring fixed to the inner side wall of the fixed cylinder, and a baffle assembled to the other end of the second spring, the baffle being made of elastic material. This step provides a reverse force before the pin shaft body is about to move out due to external force impact or vibration, thereby enhancing the fixation reliability of the pin shaft body in the bolt hole. The rebound force helps to offset the pin shaft body movement caused by external factors, so that the pin shaft body remains stable in the bolt hole and is not easy to loosen or fall off.
[0008] In further technical solutions, the pulling assembly includes a fixed plate fixed on the side wall of the rocker body, a slot formed in the middle of the side wall of the fixed cylinder, a pair of limiting blocks, a spring rod fixed between the pair of limiting blocks, the spring rod being made of elastic material, the spring rod sliding in the fixed plate and the slot, and a pair of limiting plates fixed to the middle of the side wall of the spring rod, the pair of limiting plates being symmetrically arranged on both sides of the fixed plate. This step sets a stable fixation structure by arranging the mutually pulling structures on both sides of the pin shaft body, effectively prevents the pin shaft body from moving when subjected to external force, and reduces the friction and wear between the bolt hole and the pin shaft body caused by the movement of the pin shaft body, thereby prolonging the service life of the pin shaft body and reducing the frequency and cost of replacing the pin shaft body.
[0009] In further technical solutions, a fixed ring is fixed to the middle of the inner side wall of the bolt hole, the fixed ring being a pair of and symmetrically arranged on both sides of the bolt hole, a plurality of cleaning brushes are fixed to the side wall of the bottom of the fixed ring, the cleaning brushes being made of deformable material, and the cleaning brushes are arranged outside the pin shaft body. This step automatically cleans along with the movement of the pin shaft body, effectively removes the accumulated coal cinder, dust and other impurities on the surface of the pin shaft body, reduces the wear of the pin shaft body, and thereby prolongs the service life of the coal mining machine.
[0010] In further technical solutions, an oil storage bag is fixed to the middle of the side wall of the rocker body, the oil storage bag being a pair of and symmetrically arranged on both sides of the rocker body, the oil storage bag being arranged between the bolt hole and the limiting block, a plurality of liquid outlets are formed in the middle of the side wall of the oil storage bag, a liquid inlet pipe is fixed to the middle of the side wall of the oil storage bag, the oil storage bag and the liquid inlet pipe are both hollow and communicate with each other, and the oil storage bag and the liquid inlet pipe are both made of elastic material. This step provides continuous lubrication effect when the pin shaft body moves, significantly reduces the friction coefficient between the pin shaft body and the bolt hole, makes the movement of the pin shaft body more smooth, and thereby improves the operation efficiency and performance of the coal mining machine.
[0011] In a further technical solution, the elastic pad is fixed in the middle of the side wall of the limiting plate, the elastic pad is arranged between the fixed plate and the limiting plate, and the elastic pad is made of elastic material. This step can absorb and disperse the impact force generated by the collision between the fixed plate and the limiting plate, reduce damage and failure caused by vibration and impact, and reduce noise.
[0012] In a further technical solution, the buffer pad is fixed in the middle of the side wall of the limiting block, the buffer pad is arranged between the limiting block and the rocker body, and the buffer pad is made of elastic material. This step can absorb and disperse the impact force generated by the collision between the rocker body and the limiting block, reduce damage and failure caused by vibration and impact, and reduce operation errors and safety hazards caused by noise interference.
[0013] The beneficial effects of the utility model are:
[0014] 1. By setting the limiting block, the movable ring, the convex ring and the first spring, the pin shaft body can be firmly limited in the bolt hole, the pin shaft body can be prevented from moving due to vibration or external force, the normal operation of the coal mining machine rocker arm is facilitated, mechanical failure or safety hazard caused by the movement of the pin shaft body is reduced, and the pin shaft body can be prevented from falling off during the operation of the coal mining machine.
[0015] 2. By setting the fixed cylinder, the second spring and the baffle, a reverse force can be provided when the pin shaft body is about to move out due to external impact or vibration, so that the fixation reliability of the pin shaft body in the bolt hole is enhanced. The rebound force can help to offset the movement of the pin shaft body caused by external factors, so that the pin shaft body can be kept stable in the bolt hole and is not easy to loosen or fall off. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a perspective view of the utility model;
[0017] Figure 2 It is a sectional view of the rocker body in the utility model;
[0018] Figure 3 It is a cooperation structure schematic view of the movable ring and the limiting block in the utility model;
[0019] Figure 4 It is a cooperation structure schematic view of the fixed plate and the elastic rod in the utility model.
[0020] EXPLANATION OF REFERENCE NUMBERS:
[0021] 1. Rocker arm body; 11. Pin hole; 12. Pin shaft body; 13. Limiting block; 14. Moving ring; 15. Protruding ring; 16. First spring; 2. Fixed cylinder; 21. Second spring; 22. Baffle; 3. Fixed plate; 31. Groove; 32. Elastic rod; 33. Limiting plate; 4. Fixed ring; 41. Cleaning brush; 5. Oil reservoir; 51. Liquid inlet pipe; 6. Elastic pad; 7. Buffer pad. Detailed Implementation
[0022] The embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0023] Example:
[0024] like Figures 1 to 4 As shown, the device includes a rocker arm body 1. A pin hole 11 is provided in the middle of the side wall of the rocker arm body 1. A pin shaft body 12 is rotatably connected to the middle of the inner side wall of the pin hole 11. Limiting blocks 13 are fixed at both ends of the pin shaft body 12. A movable ring 14 is rotatably connected to the middle of the inner side wall of the rocker arm body 1. A convex ring 15 is fixed in the middle of the side wall of the movable ring 14. The convex ring 15 is rotatably connected to the rocker arm body 1. A first spring 16 is fixed between the movable ring 14 and the limiting block 13. There are multiple first springs 16, which are arranged in a circular array on the side wall of the limiting block 13. A rebound component is provided in the middle of the side wall of the rocker arm body 1. The rebound components are a pair and symmetrically covered outside the limiting block 13. A pulling component is provided between the pair of limiting blocks 13.
[0025] The working principle of the above technical solution is as follows:
[0026] When the worker operates the coal mining machine to mine coal, the rocker body 1 of the coal mining machine rotates around the pin shaft body 12, at this time, the pin shaft body 12 rotates inside the pin hole 11, when the pin shaft body 12 rotates, the pin shaft body 12 rotates with the limiting blocks 13 at both ends, when the limiting blocks 13 rotate, the multiple first springs 16 on the side wall of the limiting blocks 13 pull the movable ring 14 and the convex ring 15 to rotate inside the rocker body 1, at this time, the movable ring 14 and the pin shaft body 12 rotate synchronously, when the pin shaft body 12 moves horizontally inside the pin hole 11, the multiple first springs 16 pull the pin shaft body 12 to limit the horizontal movement distance of the pin shaft body 12, at the same time, the pulling assembly limits the distance between the pair of limiting blocks 13 and the rocker body 1 from above, when the pin shaft body 12 is about to move horizontally beyond the specified range inside the pin hole 11, the rebound assembly pushes the pin shaft body 12 to the direction of the rocker body 1, this step can firmly limit the pin shaft body 12 inside the pin hole 11 through the arrangement of the limiting blocks 13, the movable ring 14, the convex ring 15 and the first springs 16, which reduces the pin shaft body 12 movement phenomenon caused by vibration or external force, helps the normal operation of the rocker of the coal mining machine, reduces the mechanical failure or safety hazard caused by the pin shaft body 12 movement, and in the working process of the coal mining machine, the pin shaft body 12 will gradually loosen or even fall off due to vibration or impact, this setting can effectively prevent the pin shaft body 12 from falling off, which helps the overall stability and safety of the coal mining machine.
[0027] As shown in Figure 1 and Figure 4 , the rebound assembly comprises a fixed cylinder 2, the fixed cylinder 2 is fixed on the side wall of the rocker body 1, the second spring 21 is fixedly connected to the middle part of the inner side wall of the fixed cylinder 2, the other end of the second spring 21 is assembled with a baffle 22, and the baffle 22 is made of elastic material.
[0028] When the pin shaft body 12 moves horizontally inside the pin hole 11 and is about to exceed the specified range, the end of the pin shaft body 12 will first contact the baffle 22, then under the combined rebound action of the second spring 21 and the baffle 22, the pin shaft body 12 starts to move reversely, at this time, the pin shaft body 12 moves to the rocker body 1, this step can provide a reverse force when the pin shaft body 12 is about to move out due to external impact or vibration, thereby enhancing the fixing reliability of the pin shaft body 12 inside the pin hole 11, which helps to offset the pin shaft body 12 movement caused by external factors, so that the pin shaft body 12 remains stable inside the pin hole 11 and is not easy to loosen or fall off.
[0029] As shown in Figure 1 and Figure 4As shown, the pulling assembly comprises a fixed plate 3 fixed on the side wall of the rocker body 1, a slot 31 is formed in the middle of the side wall of the fixed cylinder 2, a pair of limiting blocks 13 are fixed with a elastic rod 32, the elastic rod 32 is of elastic material, the elastic rod 32 slides inside the fixed plate 3, the elastic rod 32 slides inside the slot 31, and a pair of limiting plates 33 are fixed on the middle of the side wall of the elastic rod 32, and the pair of limiting plates 33 are symmetrically arranged on the two sides of the fixed plate 3.
[0030] When the pin shaft body 12 moves horizontally inside the bolt hole 11, the limiting blocks 13 at both ends of the pin shaft body 12 pull the elastic rod 32, so that the elastic rod 32 slides between the fixed plate 3 and the slot 31, when the limiting plate 33 contacts with the fixed plate 3, the fixed plate 3 blocks the limiting plate 33, so that the limiting blocks 13 cannot continue to pull the elastic rod 32, and the limiting blocks 13 at both ends move with the pin shaft body 12 within the limited range, the fixed plate 3, the slot 31, the elastic rod 32 and the limiting plate 33 are arranged, and the structure of pulling each other is arranged on both sides of the pin shaft body 12, so that a stable fixing structure is formed, which effectively prevents the pin shaft body 12 from moving when subjected to external force, and the movement of the pin shaft body 12 will cause friction and wear between the bolt hole 11 and the pin shaft body 12, thereby shortening the service life of the pin shaft body 12, this arrangement can reduce the movement of the pin shaft body 12, thereby reducing the friction and wear between the bolt hole 11 and the pin shaft body 12, which helps to prolong the service life of the pin shaft body 12 and reduce the frequency and cost of replacing the pin shaft body 12.
[0031] As shown in the figure, Figures 2 to 4 The inside wall of the bolt hole 11 is fixed with a fixed ring 4, the fixed ring 4 is a pair of and symmetrically arranged on both sides of the bolt hole 11, the bottom side wall of the fixed ring 4 is fixed with a plurality of cleaning brushes 41, the cleaning brushes 41 are of deformable material, and the cleaning brushes 41 cover the outside of the pin shaft body 12.
[0032] When the pin shaft body 12 moves horizontally inside the bolt hole 11, the plurality of cleaning brushes 41 inside the bolt hole 11 can clean the surface of the moving pin shaft body 12, this step can automatically clean with the movement of the pin shaft body 12, which can effectively remove the accumulated coal cinder, dust and other impurities on the surface of the pin shaft body 12, reduce the wear of the pin shaft body 12, and prolong the service life of the coal mining machine.
[0033] As shown in the figure, Figures 1 to 3 The middle of the side wall of the rocker body 1 is fixed with an oil storage bag 5, the oil storage bag 5 is a pair of and symmetrically arranged on both sides of the rocker body 1, the oil storage bag 5 is arranged between the bolt hole 11 and the limiting block 13, a plurality of liquid outlets are formed in the middle of the side wall of the oil storage bag 5, an inlet pipe 51 is fixed in the middle of the side wall of the oil storage bag 5, the oil storage bag 5 and the inlet pipe 51 are both hollow and communicated, and the oil storage bag 5 and the inlet pipe 51 are both of elastic material.
[0034] The staff injects lubricating liquid into the inside of the oil storage bag 5 through the liquid inlet pipe 51, and when the pin shaft body 12 collides with the rocker body 1 in movement, the pin shaft body 12 extrudes the oil storage bag 5 on the side wall of the rocker body 1, at which time the lubricating liquid in the inside of the oil storage bag 5 flows outwards through the plurality of liquid outlets, so that the lubricating liquid is applied between the rocker body 1, the pin hole 11 and the pin shaft body 12, and the step of providing the oil storage bag 5 and the liquid inlet pipe 51 can provide continuous lubrication effect when the pin shaft body 12 moves, significantly reduces the friction coefficient between the pin shaft body 12 and the pin hole 11, so that the movement of the pin shaft body 12 is more smooth, thereby improving the operation efficiency and performance of the coal mining machine.
[0035] As shown in Figure 1 and Figure 4 , the elastic pad 6 is fixed in the middle of the side wall of the limiting plate 33, the elastic pad 6 is arranged between the fixed plate 3 and the limiting plate 33, and the elastic pad 6 is made of elastic material.
[0036] The elastic pad 6 can absorb and disperse the impact force generated by the collision between the fixed plate 3 and the limiting plate 33, reduce damage and failure caused by vibration and impact, and reduce noise.
[0037] As shown in Figures 1 to 3 , the buffer pad 7 is fixed in the middle of the side wall of the limiting block 13, the buffer pad 7 is arranged between the limiting block 13 and the rocker body 1, and the buffer pad 7 is made of elastic material.
[0038] The buffer pad 7 can absorb and disperse the impact force generated by the collision between the rocker body 1 and the limiting block 13, reduce damage and failure caused by vibration and impact, and reduce operation errors and safety hazards caused by noise interference.
[0039] The above embodiments only express the specific implementation of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.
Claims
1. A shearer arm pin shaft anti-channeling device, comprising an arm body (1), characterized in that: The side wall of the rocker body (1) is provided with a pin hole (11) in the middle, a pin shaft body (12) is rotatably connected to the inner side wall of the pin hole (11), the two ends of the pin shaft body (12) are fixedly connected with limit blocks (13), an activity ring (14) is rotatably connected to the inner side wall of the rocker body (1), a convex ring (15) is fixedly connected to the side wall of the activity ring (14), the convex ring (15) is rotatably connected with the rocker body (1), a first spring (16) is fixed between the activity ring (14) and the limit block (13), the first spring (16) is a plurality of and arranged in a circular array on the side wall of the limit block (13), a rebound assembly is arranged in the middle of the side wall of the rocker body (1), the rebound assembly is a pair of and symmetrically arranged outside the limit block (13), and a pulling assembly is arranged between the pair of limit blocks (13).
2. A shearer arm pin shaft anti-channeling device according to claim 1, characterized in that: The rebound assembly comprises a fixed cylinder (2) fixed on the side wall of the rocker body (1), a second spring (21) fixedly connected to the inner side wall of the fixed cylinder (2), and a baffle (22) assembled at the other end of the second spring (21), wherein the baffle (22) is made of elastic material.
3. A coal cutter rocker pin shaft anti-creep device according to claim 2 characterised in that: The pulling assembly comprises a fixed plate (3) fixed on the side wall of the rocker body (1), a notch (31) formed in the middle of the side wall of the fixed cylinder (2), a spring rod (32) fixedly connected between the pair of limit blocks (13), the spring rod (32) made of elastic material, the spring rod (32) sliding in the fixed plate (3), the spring rod (32) sliding in the notch (31), and a pair of limit plates (33) fixedly connected to the middle of the side wall of the spring rod (32), wherein the pair of limit plates (33) are symmetrically arranged on the two sides of the fixed plate (3).
4. A sheave arm pin shaft anti-channeling device for a coal mining machine as set forth in claim 1, characterized in that: A fixed ring (4) is fixedly connected to the middle of the inner side wall of the pin hole (11), the fixed ring (4) is a pair of and symmetrically arranged on the two sides of the pin hole (11), a plurality of cleaning brushes (41) are fixedly connected to the bottom side wall of the fixed ring (4), the cleaning brushes (41) are made of deformable material, and the cleaning brushes (41) are arranged outside the pin shaft body (12).
5. A shearer arm pin shaft anti-channeling device according to claim 3, characterized in that: A storage oil bag (5) is fixedly connected to the middle of the side wall of the rocker body (1), the storage oil bag (5) is a pair of and symmetrically arranged on the two sides of the rocker body (1), the storage oil bag (5) is arranged between the pin hole (11) and the limit block (13), a plurality of liquid outlets are formed in the middle of the side wall of the storage oil bag (5), an inlet pipe (51) is fixedly connected to the middle of the side wall of the storage oil bag (5), and the storage oil bag (5) and the inlet pipe (51) are both hollow and communicated, and the storage oil bag (5) and the inlet pipe (51) are both made of elastic material.
6. A device for preventing the migration of a rocker pin shaft of a coal mining machine according to claim 3, characterized in that: An elastic pad (6) is fixedly connected to the middle of the side wall of the limit plate (33), the elastic pad (6) is arranged between the fixed plate (3) and the limit plate (33), and the elastic pad (6) is made of elastic material.
7. A device for preventing the migration of a rocker pin shaft of a coal mining machine according to claim 5, characterized in that: A buffer pad (7) is fixedly connected to the middle of the side wall of the limit block (13), the buffer pad (7) is arranged between the limit block (13) and the rocker body (1), and the buffer pad (7) is made of elastic material.