The invention belongs to the technical field of hydraulic lifting, and relates to a self-locking hydraulic lifting device which comprises a hydraulic lifting device connected with a first control device through a first connecting pipe and connected with a second control device through a second connecting pipe. The second control device and the first control device are connected through the connecting device, the hydraulic lifting device stretches out and draws back, when the hydraulic lifting device extends, the first control device supplements hydraulic oil into the hydraulic lifting device, and meanwhile the first control device drives the second control device to be converted into an oil discharging state through the connecting device. The first control device prevents hydraulic oil used for extending in the hydraulic lifting device from being discharged so that the hydraulic lifting device can be in a self-locking state, and when the hydraulic lifting device needs to be shortened, the second control device drives the first control device to convert the state through the connecting device so that the hydraulic oil in the hydraulic lifting device can be discharged.
本发明属于液压升降技术领域,涉及一种自锁式液压升降装置,包括液压升降装置,所述液压升降装置通过第一连接管和第一控制装置连接,所述液压升降装置通过第二连接管和第二控制装置连接,第二控制装置和第一控制装置通过连接装置连接,通过液压升降装置进行伸缩,在液压升降装置延伸时第一控制装置向液压升降装置内部补充液压油,同时第一控制装置通过连接装置驱动第二控制装置转换为排油的状态,第一控制装置防止液压升降装置内部的延伸所用的液压油排出而使得液压升降装置处在自锁的状态,当需要液压升降装置缩短时,第二控制装置通过连接装置驱动第一控制装置转换状态使得液压升降装置内部的液压油排出。
Self-locking hydraulic lifting device
一种自锁式液压升降装置
2023-09-01
Patent
Electronic Resource
Chinese
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 |
Lifting hook self-locking device and lifting appliance comprising lifting hook self-locking device
European Patent Office | 2023
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