The invention aims to provide the escape extension ladder which is simple in structure and small in occupied space. The ladder comprises a main ladder assembly and an auxiliary ladder assembly, the auxiliary ladder assembly is in sliding fit with the main ladder assembly, a fixing column, a first limiting block and a second limiting block are arranged on the side portion of the main ladder assembly, a hook and a pulley are arranged on the side portion of the auxiliary ladder assembly, the first limiting block is located above the second limiting block, and the second limiting block is located above the first limiting block. The pulley is arranged on the main ladder frame in a rolling fit mode and located between the first limiting block and the second limiting block, and the hook is matched with the fixing column. The ladder is applied to the technical field of ladders.
本发明旨在提供一种结构简单并且占用空间小的逃生伸缩梯。本发明包括主梯架和副梯架,所述副梯架滑动配合在所述主梯架上,所述主梯架的侧部设置有固定柱、第一限位块以及第二限位块,所述副梯架的侧部设置有挂钩和滑轮,所述第一限位块位于所述第二限位块的上方,所述滑轮滚动配合在所述主梯架上,所述滑轮位于所述第一限位块和所述第二限位块之间,所述挂钩与所述固定柱相适配。本发明应用于梯子技术领域。
Escape extension ladder
逃生伸缩梯
2022-03-25
Patent
Elektronische Ressource
Chinesisch