The invention discloses a shear type lifting device with a a mechanical lever type power assisting mechanism. The shear type lifting device comprises a chassis, a bearing platform, a shear type lifting mechanism, the power assisting mechanism and a hydraulic cylinder horizontally fixed to the rear end of the chassis. The shear type lifting mechanism comprises a plurality of groups of shear type lifting arms which are hinged, wherein the first group of shear type lifting arm which is slidably connected with the chassis comprises a cross rod which is slidably connected with the chassis, the cross rod is hinged with a piston rod of the hydraulic cylinder, and the power assisting mechanism comprises a power assisting rod which is connected with the cross rod and a lifting roller which can be in rolling contact with the bottom of the bearing platform. When a shear type lifting and hanging device is located at the lowest point, the shear type lifting mechanism and the bearing platform are jacked up through the power assisting mechanism, the shear type lifting mechanism avoiding a dead point begins to work when the power assisting rod reaches the limit position and is separated from the bearing platform, and the shear type lifting mechanism is driven by the hydraulic cylinder to drive the bearing platform to continue to ascend, that is to say, the horizontal layout of the hydraulic cylinder is met by additionally arranging the power assisting mechanism, so that the dead point of the shear type lifting mechanism is effectively avoided.
本发明公开了一种带有机械杠杆式助力机构的剪式升降装置,该装置包括底盘、承载平台、剪式升降机构、助力机构的以及水平固定于底盘后端的液压缸;剪式升降机构包括多组铰接相连的剪式升降臂,其中与底盘滑动连接的第一组剪式升降臂包括与底盘滑动连接的横杆,横杆与液压缸的活塞杆相铰接,助力机构包括与横杆相连的助力杆以及能够与承载平台底部滚动接触的起升滚轮;剪式升挂装置在最低点时,通过助力机构将剪式升降机构和承载平台顶起,助力杆达到极限位置与承载平台分离时已避开死点的剪式升降机构开始工作,剪式升降机构在液压缸的驱动下带动承载平台继续上升,即通过增加助力机构满足液压缸的水平布局,有效地避开了剪式升降机构的死点。
Shear type lifting device with mechanical lever type power assisting mechanism
一种带有机械杠杆式助力机构的剪式升降装置
23.04.2021
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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