The invention belongs to the technical field of overhead working trucks, and particularly relates to a three-stage telescopic supporting leg device and an overhead working truck, the device comprises a horizontal supporting leg seat, a first-stage horizontal supporting leg, a second-stage horizontal supporting leg, a third-stage horizontal supporting leg, a vertical supporting leg, a hydraulic cylinder assembly and a zipper transmission mechanism, the first-stage horizontal supporting leg can stretch out or retract back relative to the horizontal supporting leg seat, and the second-stage horizontal supporting leg can stretch out or retract back relative to the vertical supporting leg seat; the second-stage horizontal supporting leg can extend or retract relative to the first-stage horizontal supporting leg, and the third-stage horizontal supporting leg can extend or retract relative to the second-stage horizontal supporting leg; the vertical supporting leg is connected with the third-stage horizontal supporting leg; the hydraulic cylinder assembly stretches out and draws back to drive the first-stage horizontal supporting leg to stretch out or draw back relative to the horizontal supporting leg base. The zipper transmission mechanism is matched with the hydraulic assembly to achieve rapid stretching and retracting of the first-stage horizontal supporting leg, the second-stage horizontal supporting leg and the third-stage horizontal supporting leg. The large-span landing leg is convenient to install, operate and maintain, the large-span landing leg can stretch out and retract conveniently and rapidly, meanwhile, the operation preparation time is shortened, and the operation efficiency of the overhead working truck is greatly improved.
本发明属于高空作业车技术领域,具体涉及一种三级伸缩支腿装置及高空作业车,本装置包括水平支腿座、一级水平支腿、二级水平支腿、三级水平支腿、垂直支腿、液压缸组件、拉锁传动机构,一级水平支腿可相对于水平支腿座伸出或缩回,二级水平支腿可相对于一级水平支腿伸出或缩回,三级水平支腿可相对于二级水平支腿伸出或缩回;垂直支腿与三级水平支腿连接;液压缸组件的伸缩带动一级水平支腿相对于水平支腿座伸出或缩回;拉锁传动机构与液压组件配合实现一级水平支腿、二级水平支腿、三级水平支腿的快速伸缩。本发明便于安装、操作和维护,解决了大跨级支腿方便快捷的伸出和缩回,同时减少了作业准备时间,大大增加了高空作业车的作业效率。
Three-stage telescopic supporting leg device and overhead working truck
一种三级伸缩支腿装置及高空作业车
2023-01-31
Patent
Elektronische Ressource
Chinesisch
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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