一种单一故障保护吊钩装置
By designing a single-fault protection hook device, utilizing pulleys of different diameters, detachable pulley covers, and thrust ball bearings, the safety hazards caused by the easy breakage of wire ropes in traditional hook devices are solved, enabling slow descent of the hoisted object and efficient maintenance, thus improving safety and flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河南蒲瑞精密机械有限公司
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional hook devices are prone to breakage under wire rope wear, overload, or external impact, causing the hoisted object to fall instantly, posing a serious safety hazard.
Design a single-failure protection hook device, which uses two independent steel wire ropes that are wound around pulleys of different diameters. The difference in pulley diameters prevents the steel wire ropes from contacting each other. The device is equipped with a detachable pulley cover and a thrust ball bearing to ensure that if one steel wire rope breaks, the other steel wire rope bears the entire load, slowly lowers the hoisted object, and replaces the broken steel wire rope on the ground.
It effectively prevents the hoisted object from falling, improves maintenance efficiency, reduces the risk of foreign object intrusion and accidental contact by personnel, and enhances the safety and flexibility of the hook device.
Smart Images
Figure CN224513002U_ABST
Abstract
Claims
1. A single-fault protection hook device, comprising a yoke frame, characterized in that: The bottom of the yoke frame is equipped with a hook body, and a pulley frame is detachably connected to the top surface of the yoke frame. The pulley frame is provided with two symmetrically arranged first pulleys, and two symmetrically arranged second pulleys perpendicular to the first pulleys are provided between the two first pulleys. The two first pulleys and the two second pulleys are rotatably connected to the pulley frame through pulley shafts. The diameter of the second pulley is smaller than the diameter of the first pulley.
2. A single failure protected hook apparatus according to claim 1, wherein: Both the outer sides of the first pulley and the outer sides of the second pulley are provided with pulley covers, which are detachably connected to the pulley frame by bolts.
3. A single point failure protected lifting hook apparatus according to claim 1, wherein: The bottom of the yoke frame is rotatably connected to a hook beam, the top of the hook body passes through the hook beam and is threaded with a hook nut, and a thrust ball bearing is installed between the hook nut and the hook beam.
4. A single point failure protected lifting hook apparatus according to claim 1, wherein: The yoke frame and the pulley frame are connected by bolts and are equipped with anti-loosening washers.
5. A single point failure protected lifting hook apparatus according to claim 1, wherein: Both ends of the pulley shaft extend to the outside of the pulley frame, and the top of both ends of the pulley shaft is provided with shaft end baffles. The two ends of the shaft end baffles are detachably connected to the pulley frame by bolts.