Thin seam coal cutter towline device

Abstract

The application discloses a thin coal seam coal mining machine towline device and relates to the field of thin coal seam coal mining machine towline devices. The device comprises a pressing plate, one side of the pressing plate is provided with a bracket, the bracket is provided with a towline mechanism, the towline mechanism comprises a movable hinged plate arranged on the bracket, one side of the movable hinged plate is connected with a fixed base, and a short pin shaft is arranged at the connecting position of the fixed base and the movable hinged plate. The movable hinged plate and the fixed base are connected through the short pin shaft, and the short pin shaft is clamped by a pin to prevent the pin from moving, wherein the movable hinged plate can rotate with the short pin shaft, the cable clamp loaded with a cable and a water pipe can automatically lift up with the increase of the number of superimposed layers during the operation of the coal mining machine, the cable clamp can not be clamped in the cable groove of the conveyor, and the cable clamp can normally and smoothly operate. Compared with the general towline device, the device has the advantages of better flexibility, reliability and the like.

Description

Technical Field

[0001] This application relates to technological innovation in cable-dragging devices for thin coal seam mining machines, particularly a novel intelligent and adjustable cable-dragging device for thin coal seam mining machines. Background Technology

[0002] Currently, coal accounts for a large proportion of my country's energy supply, with thin coal seams accounting for more than 20% of total coal reserves. Furthermore, intelligent fully mechanized mining faces for thin coal seams are becoming increasingly common. This necessitates high reliability of thin coal seam mining machines during underground operation to meet the requirements of safe production.

[0003] The cable-dragging device for thin coal seam mining machines is the power source for these machines. Installed on the machine body, it serves to drag the power cable and water supply pipes. On one side, the cable connects to the main power interface on the mining machine, and the water pipe connects to the main water inlet. On the other side, the cable and water pipe, housed in cable clamps, reciprocate in the cable trough of the transport machine. Due to the height of the cable trough, they may overlap. Therefore, the cable-dragging device is designed with a bending function. To ensure cable safety and reliability during operation and prevent breakage, a shearing pin and a limit switch are incorporated. The shearing force of the shearing pin is 80% of the cable's breaking force. When the shearing pin cuts, the mechanism activates the limit switch, cutting off power to the main unit and stopping the machine, thus preventing cable breakage. Furthermore, the cable clamps and cable-dragging device are rigidly connected to prevent the cable clamps from swinging in the transport machine's cable trough and being thrown out.

[0004] In view of the above requirements, in order to better ensure the safety and reliability of the cable of the thin coal seam mining machine during operation and reduce the occurrence of cable breakage accidents under continuous operation and harsh working conditions, it is necessary to design a new type of cable dragging device. Utility Model Content

[0005] In order to reduce the occurrence of cable breakage accidents during continuous operation and harsh working conditions, this application provides a cable dragging device for thin coal seam mining machines.

[0006] The technical solution of the cable-dragging device for a thin coal seam mining machine provided in this application is as follows: A cable-dragging device for a thin coal seam mining machine includes a pressure plate, a bracket is provided on one side of the pressure plate, and a cable-dragging mechanism is provided on the bracket;

[0007] The towing cable mechanism includes a movable hinge plate mounted on a bracket. A fixed base is connected to one side of the movable hinge plate. A short pin is provided at the connection between the fixed base and the movable hinge plate. A pad is fixedly installed at the bottom of the movable hinge plate. A towing cable pad is provided at the bottom of the fixed base. A limit switch is provided on the bracket. A vertical pin and a shear pin are respectively provided on the movable hinge plate. A first screw, a second screw, a third screw, and a fourth screw are provided on the pressure plate, the movable hinge plate, and the fixed base.

[0008] By adopting the above technical solution, the movable hinge plate and the fixed base are connected by a short pin shaft, and the short pin shaft is locked with pin X to prevent pin X from moving. The movable hinge plate can rotate with the short pin shaft. As the coal mining machine runs, the number of stacked layers of the cable clamps containing cables and water pipes increases, which will cause the movable hinge plate to automatically tilt up, so that the cable clamps will not get stuck in the cable trough of the conveyor and can run normally and smoothly. Compared with the general cable dragging device, which requires manual adjustment, it has better flexibility and reliability.

[0009] Preferably, the first screw, the second screw, the third screw and the fourth screw are each provided with a corresponding dustproof washer.

[0010] By adopting the above technical solution and setting up dustproof gaskets, dust prevention can be achieved.

[0011] Preferably, corresponding connecting plates are fixedly installed on both sides of the limit switch, and both connecting plates are located above the bracket.

[0012] By adopting the above technical solution and setting up a connecting plate, the installation can be assisted.

[0013] Preferably, both connecting plates are provided with the same positioning frame, and a sliding plate is fixedly installed on one side of the positioning frame, and the sliding plate is slidably installed on the bracket.

[0014] By adopting the above technical solution and setting up a positioning frame, the positioning and installation can be assisted.

[0015] Preferably, two fixing rods are symmetrically fixedly installed on one side of the sliding plate, and each of the two fixing rods is fitted with a corresponding fixing sleeve. The same rectangular plate is fixedly installed on one side of each of the two fixing sleeves, and the rectangular plate is fixedly installed on the bracket.

[0016] By adopting the above technical solution, the fixed rod and the fixed sleeve are set so that the fixed rod can be slidably installed in the fixed sleeve.

[0017] Preferably, the fixing rod and the fixing sleeve are provided with the same spring, and the two ends of the spring are respectively fixedly installed on the side of the sliding plate and the rectangular plate that are close to each other.

[0018] By adopting the above technical solution and setting a spring, an auxiliary positioning function can be achieved.

[0019] Preferably, each of the two connecting plates has a corresponding positioning groove on its top, and a corresponding positioning block is slidably installed in each of the two positioning grooves. Both positioning blocks are fixedly installed with the positioning frame.

[0020] By adopting the above technical solution, positioning and installation can be facilitated by setting positioning grooves and positioning blocks.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. This application employs a movable hinge plate and the like, which are connected to the fixed base via a short pin. The short pin is secured with a pin to prevent it from shifting. The movable hinge plate rotates with the short pin. As the cable clamps containing cables and water pipes increase in number as the coal mining machine operates, the movable hinge plate automatically tilts upwards. This prevents the cable clamps from getting stuck in the conveyor cable trough, allowing for smooth and normal operation. Compared to conventional cable dragging devices that require manual adjustment, this method offers greater flexibility and reliability.

[0023] 2. In this application, with the cooperation of brackets, when the cable in the cable clamp is suddenly subjected to external force during the operation of the cable-dragging device and the coal mining machine, the bracket is also subjected to external force, which acts on the shearing pin. When the shearing pin is cut, the bracket rotates, thereby driving the contact at the front end of the limit switch to rotate. The electrical signal of the limit switch is transmitted to the main unit to cut off the power, and the coal mining machine stops, thus preventing the cable from being pulled off and avoiding the occurrence of an accident. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a cable-dragging device for a thin coal seam mining machine according to an embodiment of this application;

[0025] Figure 2 This is a partial unfolded schematic diagram illustrating the main embodiment of the towing cable structure in this application;

[0026] Figure 3 This is a schematic diagram illustrating the main positioning structure in the embodiments of this application;

[0027] Figure 4 This is a partial unfolded schematic diagram illustrating the positioning structure in an embodiment of this application;

[0028] Reference numerals: 1. Pressure plate; 2. Pad block; 3. Vertical pin; 4. Shear pin; 5. Movable hinge plate; 6. Fixed base; 7. Cable tray; 8. Bracket; 9. First screw; 10. Second screw; 11. Short pin shaft; 12. Third screw; 13. Fourth screw; 14. Limit switch; 15. Connecting plate; 16. Positioning frame; 17. Sliding plate; 18. Fixed rod; 19. Fixed sleeve; 20. Spring; 21. Rectangular plate; 22. Positioning groove; 23. Positioning block. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0030] This application discloses a cable-dragging device for a thin coal seam mining machine.

[0031] Reference Figure 1-3 A cable-dragging device for a thin coal seam mining machine includes a pressure plate 1, a bracket 8 disposed on one side of the pressure plate 1, a cable-dragging mechanism disposed on the bracket 8, and a positioning mechanism disposed on the cable-dragging mechanism.

[0032] The cable-dragging mechanism includes a movable hinge plate 5 mounted on a bracket 8, with a fixed base 6 connected to one side of the movable hinge plate 5. A short pin 11 is provided at the connection between the fixed base 6 and the movable hinge plate 5. A pad 2 is fixedly installed at the bottom of the movable hinge plate 5. A cable-dragging pad 7 is provided at the bottom of the fixed base 6. A limit switch 14 is provided on the bracket 8. A vertical pin 3 and a shearing pin 4 are provided on the movable hinge plate 5. A first screw 9, a second screw 10, a third screw 12, and a fourth screw 13 are provided on the pressure plate 1, the movable hinge plate 5, and the fixed base 6. A corresponding dustproof gasket is provided on the first screw 9, the second screw 10, the third screw 12, and the fourth screw 13.

[0033] In use, the movable hinge plate 5 is hidden to reveal the relative positions of the components below it. The limit switch 14 is connected to the movable hinge plate 5. The bracket 8 is inserted into the movable hinge plate 5 and positioned by the vertical pin 3. It is then locked with the pad 2, bolt M24x110, dustproof washer HLS-24, screw M6x20, and dustproof washer HLS-6. At this time, the bracket 8 is rotatable. The bracket 8 can only be stopped by inserting the shear pin 4 between the movable hinge plate 5 and the bracket 8. The retaining ring prevents the shear pin 4 from popping out. The pressure plate 1 is tightened to the bracket 8 by the first screw 9 and dustproof washer HLS-12. The cables and water pipes are pressed and fixed between them.

[0034] When the cable in the cable clamp is suddenly subjected to external force during the operation of the cable-dragging device along with the coal mining machine, the bracket 8 is also subjected to external force, which acts on the shearing pin 4. When the shearing pin 4 cuts, the bracket 8 rotates, thereby driving the contact at the front end of the limit switch 14 to rotate. The electrical signal of the limit switch 14 is transmitted to the main unit to cut off the power, and the coal mining machine stops, thus preventing the cable from being pulled off and avoiding an accident.

[0035] The front left and right clamps of bracket 8 are rigidly connected to the cable clamps, and the second screw 10 is threaded to prevent coal and rock on the surface of the coal mining machine from entering the threaded hole, thus improving cleanliness during use.

[0036] Reference Figure 2-4 The positioning mechanism includes connecting plates 15 fixedly installed on both sides of the limit switch 14. Both connecting plates 15 are located above the bracket 8. Both connecting plates 15 are provided with the same positioning frame 16. A sliding plate 17 is fixedly installed on one side of the positioning frame 16. The sliding plate 17 is slidably installed on the bracket 8. Two fixing rods 18 are symmetrically fixedly installed on one side of the sliding plate 17.

[0037] Each of the two fixed rods 18 is fitted with a corresponding fixed sleeve 19. The same rectangular plate 21 is fixedly installed on one side of each of the two fixed sleeves 19. The rectangular plate 21 is fixedly installed on the bracket 8. The fixed rods 18 and the fixed sleeves 19 are provided with the same spring 20. The two ends of the spring 20 are respectively fixedly installed on the side of the sliding plate 17 and the rectangular plate 21 that are close to each other. The top of each of the two connecting plates 15 is provided with a corresponding positioning groove 22. The two positioning grooves 22 are each slidably installed with a corresponding positioning block 23. The two positioning blocks 23 are fixedly installed with the positioning frame 16.

[0038] In use, the positioning frame 16 is moved by pushing it. The movement of the positioning frame 16 will also cause the sliding plate 17 and the fixing rod 18 to move. The fixing rod 18 moves into the corresponding fixing sleeve 19. At this time, the positioning of the connecting plate 15 can be released, and the positioning and installation of the limit switch 14 can be released, which makes it easier to disassemble and maintain it later.

[0039] The implementation principle of the cable-dragging device for a thin coal seam mining machine in this application embodiment is as follows: In use, the fixed base 6 and the cable-dragging pad 7 are fixed to the body of the mining machine by pin 40x120-A; and are tightened to the body of the mining machine by screws M20x95 and dustproof washers HLS-20, so that the cable-dragging device is installed on the mining machine and runs together with the mining machine. The cable-dragging pad 7 is an optional accessory and its height can be adjusted according to the needs of the fully mechanized mining face.

[0040] The movable hinge plate 5 is connected to the fixed base 6 by a short pin 11, and the short pin 11 is held in place by a pin 5x40 to prevent the pin 5x40 from moving. The movable hinge plate 5 can rotate with the short pin 11. As the coal mining machine runs, the number of stacked layers of the cable clamps containing cables and water pipes increases, which will cause the movable hinge plate 5 to automatically tilt upwards. This ensures that the cable clamps will not get stuck in the cable trough of the conveyor and can run normally and smoothly. Compared with the general cable dragging device, which requires manual adjustment, it has better flexibility and reliability.

[0041] By concealing the movable hinge plate 5, the relative positions of the components below it are revealed. The limit switch 14 is connected to the movable hinge plate 5. The bracket 8 is inserted into the movable hinge plate 5 and positioned by the vertical pin 3. It is then locked with the pad 2, bolt M24x110, dustproof washer HLS-24, screw M6x20, and dustproof washer HLS-6. At this time, the bracket 8 is rotatable. The bracket 8 can only be stopped by inserting the shear pin 4 between the movable hinge plate 5 and the bracket 8. The retaining ring prevents the shear pin 4 from popping out. The pressure plate 1 is tightened to the bracket 8 by the first screw 9 and dustproof washer HLS-12. The cables and water pipes are pressed and fixed between them.

[0042] When the cable in the cable clamp is suddenly subjected to external force during the operation of the cable-dragging device along with the coal mining machine, the bracket 8 is also subjected to external force, which acts on the shearing pin 4. When the shearing pin 4 cuts, the bracket 8 rotates, thereby driving the contact at the front end of the limit switch 14 to rotate. The electrical signal of the limit switch 14 is transmitted to the main unit to cut off the power, and the coal mining machine stops, thus preventing the cable from being pulled off and avoiding an accident.

[0043] The front left and right clamps of bracket 8 are rigidly connected to the cable clamp, and the second screw 10 is threaded to prevent coal and rock on the surface of the coal mining machine from entering the threaded hole, thus improving cleanliness during use.

[0044] When the limit switch 14 needs to be disassembled, replaced, or maintained, the positioning frame 16 is moved by pushing it. The movement of the positioning frame 16 will also cause the sliding plate 17 and the fixing rod 18 to move. The fixing rod 18 moves into the corresponding fixing sleeve 19. At this time, the positioning of the connecting plate 15 can be released, and the positioning and installation of the limit switch 14 can be released, thus facilitating its disassembly and maintenance in the future.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable-dragging device for a thin coal seam mining machine, comprising a pressure plate (1), characterized in that: A bracket (8) is provided on one side of the pressure plate (1), and a cable dragging mechanism is provided on the bracket (8); The towing cable mechanism includes a movable hinge plate (5) mounted on a bracket (8). A fixed base (6) is connected to one side of the movable hinge plate (5). A short pin (11) is provided at the connection between the fixed base (6) and the movable hinge plate (5). A pad (2) is fixedly installed at the bottom of the movable hinge plate (5). A towing cable pad (7) is provided at the bottom of the fixed base (6). A limit switch (14) is provided on the bracket (8). A vertical pin (3) and a shear pin (4) are provided on the movable hinge plate (5). A first screw (9), a second screw (10), a third screw (12), and a fourth screw (13) are provided on the pressure plate (1), the movable hinge plate (5), and the fixed base (6).

2. The cable-dragging device for a thin coal seam mining machine according to claim 1, characterized in that: The first screw (9), the second screw (10), the third screw (12) and the fourth screw (13) are each provided with a corresponding dustproof washer.

3. The cable-dragging device for a thin coal seam mining machine according to claim 1, characterized in that: The limit switch (14) has corresponding connecting plates (15) fixedly installed on both sides, and both connecting plates (15) are located above the bracket (8).

4. The cable-dragging device for a thin coal seam mining machine according to claim 3, characterized in that: Both of the connecting plates (15) are provided with the same positioning frame (16), and a sliding plate (17) is fixedly installed on one side of the positioning frame (16). The sliding plate (17) is slidably installed on the bracket (8).

5. A cable-dragging device for a thin coal seam mining machine according to claim 4, characterized in that: Two fixing rods (18) are symmetrically fixedly installed on one side of the sliding plate (17). Each of the two fixing rods (18) is fitted with a corresponding fixing sleeve (19). The same rectangular plate (21) is fixedly installed on one side of each of the two fixing sleeves (19). The rectangular plate (21) is fixedly installed on the bracket (8).

6. The cable-dragging device for a thin coal seam mining machine according to claim 5, characterized in that: The fixed rod (18) and the fixed sleeve (19) are provided with the same spring (20), and the two ends of the spring (20) are respectively fixedly installed on the side of the sliding plate (17) and the rectangular plate (21) that are close to each other.

7. A cable-dragging device for a thin coal seam mining machine according to claim 4, characterized in that: The top of each of the two connecting plates (15) is provided with a corresponding positioning groove (22), and a corresponding positioning block (23) is slidably installed in each of the two positioning grooves (22). The two positioning blocks (23) are fixedly installed with the positioning frame (16).

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