The invention belongs to the technical field of lifting capacity limiters of tower cranes, and particularly relates to a limiting anti-falling pulley yoke structure for a lifting capacity limiter of a crane boom of a tower crane, which comprises a pulley, a pulley yoke, a limiting anti-falling device and a lifting capacity limiter, the rear end of the pulley yoke is hinged to a cargo boom web member, and the front end of the pulley yoke is fixed to the cargo boom web member through a lifting capacity limiter hinge. The pulley is mounted at the rear part of the pulley yoke; the limiting anti-falling device is installed on the front portion of the pulley yoke and a cargo boom web member hinged to the load lifting limiter, and the length of the limiting anti-falling device cannot affect normal work of the load lifting limiter. According to the invention, the pulley yoke is provided with the limiting and anti-falling device, so that when the load lifting limiter breaks and fails due to unexpected situations, the pulley yoke is subjected to limiting and anti-falling protection through the limiting and anti-falling device, and the safety of the pulley yoke of the load lifting limiter at the cargo boom of the tower crane is greatly improved.
本发明属于塔式起重机起重量限制器的技术领域,具体涉及一种用于塔机起重臂起重量限制器的限位防脱滑轮架结构,包括滑轮、滑轮架、限位防脱装置、起重量限制器;所述滑轮架后端铰接在起重臂腹杆上,其前端通过起重量限制器铰链固定在起重臂腹杆上;所述滑轮安装在滑轮架后部;所述限位防脱装置安装在滑轮架前部和与起重量限制器铰接的起重臂腹杆上,所述限位防脱装置的长度不能影响起重量限制器正常工作。本发明在滑轮架设置限位防脱装置,从而在起重量限制器因意外情况断裂失效时,通过限位防脱装置对滑轮架进行限位防脱保护,使得塔式起重机起重臂处起重量限制器滑轮架的安全性得到极大提升。
Limiting anti-falling pulley yoke structure for lifting capacity limiter of crane boom of tower crane
一种用于塔机起重臂起重量限制器的限位防脱滑轮架结构
2024-09-20
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
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