The invention relates to a bidirectional operation manual hydraulic driving mechanism and a hydraulic lifting device, the bidirectional operation manual hydraulic driving mechanism comprises a hydraulic telescopic oil cylinder with an upper oil cavity and a lower oil cavity and a manual hydraulic driving mechanism, the manual hydraulic driving mechanism comprises a shaft seat, a shaft cover, an inclined supporting disc arranged in the shaft seat, a hydraulic pipe, an eccentric shaft and a hollow inner shaft; one end of the shaft seat is provided with an oil hole I communicated with the lower oil cavity, a vertical hole section and a transverse hole section which are communicated with each other, and the hydraulic pipe is communicated with the upper oil cavity and the vertical hole section; an inclined pressing face is arranged on the inclined supporting disc, an eccentric shaft rotates anticlockwise in the shaft seat, a plurality of transmission holes are formed in one end of the eccentric shaft, and a transverse hole section is discontinuously communicated with the first oil hole through the transmission holes. An oil pressing rod with one end abutting against the pressing face is elastically connected into the transmission hole in a sliding mode. An inner shaft is rotationally connected in the eccentric shaft through a torsion spring, and the inner vertical hole section is communicated with the lower oil cavity through the inner shaft. The hydraulic telescopic oil cylinder can be conveniently controlled to move up and down through manual forward and reverse rotation operation, and the hydraulic telescopic oil cylinder needs to be driven by external force in a matched mode when moving downwards.
本发明涉及一种双向操作的手动液压驱动机构及液压升降装置,包括带有上油腔和下油腔的液压伸缩油缸和手动液压驱动机构,手动液压驱动机构包括轴座、轴盖、设置在轴座内的斜支撑盘、液压管、偏心轴和空心的内轴;轴座一端有连通下油腔的油孔一,轴座一端有相连通的竖孔段和横孔段,液压管连通上油腔和竖孔段;斜支撑盘上带有倾斜的压紧面,轴座内逆时针转动有偏心轴,偏心轴一端有多个传递孔,横孔段通过传递孔与油孔一间断连通;传递孔内弹性滑接有一端抵在压紧面上的压油杆;偏心轴内通过扭转弹簧转接有内轴,内竖孔段通过内轴和下油腔连通。本发明通过手动正反旋转操作就可以便捷控制液压伸缩油缸的上下运动,向下运动时需要外力配合驱动。
Bidirectional-operation manual hydraulic driving mechanism and hydraulic lifting device
一种双向操作的手动液压驱动机构及液压升降装置
2025-05-30
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 / A61G TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS , Transport, persönliche Beförderungsmittel, oder Lagerung besonders ausgebildet für Kranke oder Behinderte / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein |