A coal cutter trailing cable device
By designing a cable-dragging device for the coal mining machine, the automatic winding of the cable is achieved by utilizing the elastic energy storage and release of the torsion spring. This solves the problem of cable damage during the movement of the coal mining machine, ensuring stable cable operation and equipment continuity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING VICKY ENG DESIGNING CO LTD
- Filing Date
- 2025-02-27
- Publication Date
- 2026-07-10
AI Technical Summary
During the movement of a coal mining machine, the cable is easily crushed or worn, especially when used in harsh environments, where existing technology is insufficient to effectively protect the cable.
A cable-dragging device for a coal mining machine was designed, including a frame, a rotating shaft, a torsion spring, and a manual wheel. The automatic winding of the cable is achieved by storing and releasing the elastic energy of the torsion spring, preventing the cable from rubbing against the ground and being crushed.
This effectively prevents the cable from rubbing against the ground and being crushed during the movement of the coal mining machine, ensuring the stable operation of the cable and improving the continuity of coal mining operations and the reliability of the equipment.
Smart Images
Figure CN224481446U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of coal mining equipment, and specifically relates to a coal mining machine cable dragging device. Background Technology
[0002] The coal mining machine is one of the main pieces of equipment in a fully mechanized coal mining system. It evolved from the coal cutter and is a large, complex system integrating mechanical, electrical, and hydraulic components. The coal mining machine is crucial for achieving mechanization and modernization in coal mine production, reducing manual labor, improving safety, and achieving high output, high efficiency, and low consumption. In longwall mining faces, the coal mining machine uses its working mechanism to break coal from the coal seam and load it into the face conveyor, moving at a set traction speed to ensure continuous coal breaking and loading. When the coal mining machine reciprocates, it constantly drags the cable. While the cable is taut when moving forward, it is fine, but when moving backward, the cable may come into contact with the machine and fall to the ground. The cable is easily broken by the machine, and prolonged friction with the ground in harsh environments can also damage it. Utility Model Content
[0003] To overcome the shortcomings of the prior art, this utility model provides a coal mining machine cable dragging device with a simple structure and wide applicability.
[0004] This utility model is achieved through the following technical solution:
[0005] A cable-dragging device for a coal mining machine includes a frame, on which a rotating shaft for winding cables is installed. The rotating shaft is mounted on a bearing seat, one end of the rotating shaft is integrally connected to a turntable, a torsion spring is wound on the rotating shaft outside the turntable, the torsion spring is disposed inside a cylinder, the end of the torsion spring is fixed to the cylinder, and the cylinder is fixed to the frame.
[0006] The turntable is integrally connected to two arc-shaped locking blocks located on both sides of the rotating shaft.
[0007] The end of the torsion spring is sleeved on the screw rod, which is fixed to the cylinder. The screw rod is provided with a nut for fixing the torsion spring.
[0008] The other end of the shaft is connected to a manual wheel.
[0009] A cylinder cover is installed on the cylinder.
[0010] The beneficial effects of this utility model are: when the coal mining machine moves forward, it will carry the cable forward; when the coal mining machine moves backward, the torsion spring will cause the cable to wrap around again, preventing the cable from being damaged by friction with the ground or even being crushed by the coal mining machine. The structure is simple, the application range is wide, and the effective operation of coal mining work is ensured. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings.
[0012] Appendix Figure 1 This is a schematic diagram of the main structure of this utility model;
[0013] Appendix Figure 2 This is a side view of the structure of this utility model;
[0014] In the diagram, 1 is the frame, 2 is the shaft, 3 is the bearing seat, 4 is the turntable, 5 is the torsion spring, 6 is the cylinder, 7 is the arc-shaped locking block, 8 is the screw, 9 is the nut, 10 is the manual wheel, and 11 is the cylinder cover. Detailed Implementation
[0015] The attached figure shows a specific embodiment of this utility model. This embodiment includes a frame 1, on which a rotating shaft 2 for winding cables is mounted. The rotating shaft 2 is mounted on a bearing seat 3. One end of the rotating shaft 2 is integrally connected to a turntable 4. A torsion spring 5 is wound around the rotating shaft 2 on the outer side of the turntable 4. The torsion spring 5 is disposed inside a cylinder 6, and its end is fixed to the cylinder 6, which is fixed to the frame 1. Two arc-shaped locking blocks 7 located on both sides of the rotating shaft 2 are integrally connected to the side of the turntable 4. The end of the torsion spring 5 is sleeved on a screw 8, which is fixed to the cylinder 6. A nut 9 for fixing the torsion spring 5 is provided on the screw 8. The other end of the rotating shaft 2 is connected to a manual wheel 10. A cylinder cover 11 is installed on the cylinder 6.
[0016] The coal mining machine cable-dragging device of this invention winds the cable connected to the coal mining machine onto a rotating shaft 2. When the coal mining machine moves forward, it pulls the cable forward, causing the rotating shaft 2 to rotate. The rotating shaft 2 gradually tightens the torsion spring 5. When the coal mining machine reverses, the elastic energy stored in the torsion spring 5 is released, causing the rotating shaft 2 to rotate in the opposite direction, immediately rewinding the cable onto the rotating shaft 2. This keeps the cable taut at all times, preventing it from falling to the ground and avoiding damage from friction or being crushed by the coal mining machine. One end of the torsion spring 5 is secured between the arc-shaped locking block 7 and the rotating shaft 2, while the other end is fitted onto the screw rod 8 and fixed with a nut 9, facilitating the installation, removal, and replacement of the torsion spring 5. When the torsion spring 5 is insufficient to wind the cable, the rotating shaft 2 can be rotated via the manual wheel 10 to further wind the cable onto the rotating shaft 2. The torsion spring 5 is entirely secured between the turntable 4 and the cylinder 6, ensuring that the torsion spring 5 remains in a single plane and guaranteeing its stability during operation.
Claims
1. A cable-dragging device for a coal mining machine, comprising a frame (1), wherein a rotating shaft (2) for winding a cable is mounted on the frame (1), characterized in that: The rotating shaft (2) is installed on the bearing seat (3). One end of the rotating shaft (2) is integrally connected to the turntable (4). A torsion spring (5) is wound on the rotating shaft (2) outside the turntable (4). The torsion spring (5) is set inside the cylinder (6). The end of the torsion spring (5) is fixed to the cylinder (6). The cylinder (6) is fixed on the frame (1).
2. The coal mining machine cable-dragging device according to claim 1, characterized in that: The turntable (4) is integrally connected to two arc-shaped locking blocks (7) located on both sides of the rotating shaft (2).
3. The coal mining machine cable-dragging device according to claim 1, characterized in that: The end of the torsion spring (5) is sleeved on the screw (8), the screw (8) is fixed on the cylinder (6), and the screw (8) is provided with a nut (9) for fixing the torsion spring (5).
4. The coal mining machine cable-dragging device according to claim 1, characterized in that: The other end of the shaft (2) is connected to the manual wheel (10).
5. The coal mining machine cable-dragging device according to claim 1, characterized in that: A cylinder cover (11) is installed on the cylinder (6).