The invention discloses a lifting stroke adjustable limiting device for a hoist, which comprises an output shaft, a pinion shaft coaxially connected with the output shaft, a frame, a core shaft rod fixed on the frame, a transmission shaft supported on the frame, and an upper screw rod and a lower screw rod which are respectively arranged above and below the transmission shaft and supported on the frame, a large gear of the transmission shaft is meshed with a small gear shaft, an upper screw and a lower screw are in threaded connection with an upper sliding block and a lower sliding block which can move axially respectively, an upper dead center limiting switch and a lower dead center limiting switch are fixed to the upper sliding block and the lower sliding block respectively, the upper sliding block and the lower sliding block are installed oppositely, and the transmission shaft is in transmission threaded fit with a touch block located between the upper dead center limiting switch and the lower dead center limiting switch. The upper sliding block, the lower sliding block and the touch block are respectively sleeved on the mandrel rod, and one end of the upper screw rod and one end of the lower screw rod are correspondingly fixed with an upper limit adjusting disc and a lower limit adjusting disc. When the up-down lifting limiting stroke needs to be adjusted, the upper limiting adjusting disc and the lower limiting adjusting disc are manually arranged to drive the corresponding upper stop point limiting switch and the corresponding lower stop point limiting switch to axially move to the target position, and the repeated positioning precision is high.
本发明公开了一种葫芦用升降行程可调式限位装置,它包括输出轴、与输出轴同轴联接的小齿轮轴、框架、固定在框架的芯轴杆、支承在框架的传动轴和分设在传动轴上方和下方且支承在框架的上螺杆和下螺杆,传动轴的大齿轮啮合小齿轮轴,上、下螺杆各自螺纹连接可轴向移动的上滑块、下滑块,上、下滑块各自固定上止点限位开关、下止点限位开关,上、下滑块位置相对安装,传动轴传动螺纹配合有位于上、下止点限位开关之间的碰块,上、下滑块和碰块分别空套芯轴杆,上、下螺杆的一端固定相应的上置限位调节盘、下置限位调节盘。需要调整上下升降限位行程时,手动上、下置限位调节盘带动对应上、下止点限位开关轴向移到目标位置即可,且重复定位精度高。
Limiting device with adjustable lifting stroke for hoist
一种葫芦用升降行程可调式限位装置
2024-04-26
Patent
Electronic Resource
Chinese
IPC: | B66D Haspeln , CAPSTANS |
European Patent Office | 2023
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