一种煤矿猴车托绳轮制动装置
By using the mechanical structure of the suspension square tube and the rope wheel braking device, the reliability problem of the coal mine train braking system under extreme conditions was solved, and reliable braking was achieved in the event of power failure or system failure, thereby improving the safety of underground coal mines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DATONG COAL MINE GRP
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-17
AI Technical Summary
The existing braking system for coal mine trains cannot respond reliably when the system fails, there is a power outage, or the nylon pin of the coupling breaks, causing the wire rope to slip in the opposite direction, which poses a serious safety hazard.
The device employs a suspended square tube and a rope-supporting wheel braking system. It utilizes a mechanical structure with a wedge-shaped pin and a wedge-shaped protrusion. The reverse rotation of the rope-supporting wheel is achieved by the wedge-shaped protrusion engaging in a slot. Combined with polyurethane wheel lining to increase friction, it achieves purely mechanical braking.
Even in the event of a power outage or system failure, the brake can still be reliably triggered to prevent the wire rope from reversing, thus improving safety. It has a simple structure, is easy to install and maintain, and has low cost, making it suitable for underground coal mine environments.
Smart Images
Figure CN224511107U_ABST
Abstract
Claims
1. A coal mine monkey car rope supporting wheel braking device, comprising a suspension square tube and a rope supporting wheel rotatably mounted on the outside of the suspension square tube through a wheel shaft, characterized in that: The end face of the rope-supporting wheel facing the suspended square tube is provided with several slots; A braking mechanism is provided inside the suspended square tube at the position corresponding to the slot. The braking mechanism includes a wedge pin movably mounted on the suspended square tube. The wedge pin has a wedge-shaped protrusion extending out of the suspended square tube and engaging with the slot on the side facing the slot. A spring is pressed between the side of the wedge pin facing away from the slot and the inner surface of the suspended square tube. When the rope pulley rotates in the forward direction, the groove wall of the slot pushes the inclined surface of the wedge-shaped protrusion, causing the wedge-shaped protrusion to slide out of the slot and rotate freely. When the rope pulley rotates in the reverse direction, the wedge-shaped protrusion of the inclined iron pin is engaged in the slot to achieve braking.
2. The coal mine monkey car rope supporting wheel braking device according to claim 1, characterized in that: The suspended square tube has a pair of guide plates fixed inside, and the wedge pin is slidably installed between the two guide plates.
3. The coal mine monkey car rope supporting wheel braking device according to claim 1, characterized in that: The suspended square tube has two oblique iron pins symmetrically arranged about the center of the wheel axle, and the two oblique iron pins are respectively adapted to the slot.
4. The braking device for the rope pulley of a coal mine monkey car according to claim 2, characterized in that: The wedge pin also includes a sliding block that slides along the surface of the guide clamp. One side of the sliding block is fixedly connected to a wedge-shaped protrusion. The wedge-shaped protrusion extends from a through hole in the side wall of the suspended square tube. The surface of the sliding block abuts against the edge of the through hole to limit the sliding range of the wedge pin.
5. The coal mine monkey car rope supporting wheel braking device according to claim 1, characterized in that: The spring has a guide rod fixed to the wedge pin, and the length of the guide rod does not hinder the extension and retraction of the wedge pin along the guide clamp.
6. The coal mine monkey car rope supporting wheel braking device according to claim 1, characterized in that: The card slots are evenly distributed along the side end face of the rope-supporting wheel in six places.
7. The coal mine monkey car rope supporting wheel braking device according to claim 1, characterized in that: The sheave is equipped with a liner for supporting the wire rope.
8. The coal mine monkey car rope supporting wheel braking device according to claim 7, characterized in that: The wheel liner is made of polyurethane.