The invention provides a center pushing and lifting type safe lifting platform, and belongs to the technical field of lifting equipment. The center pushing and lifting type safe lifting platform comprises a base, a bearing platform, fork-shaped frame sets and a center pushing and lifting device, wherein the number of the fork-shaped frame sets is four, and the for-shaped frame sets are arranged at the four corners of the upper surface of the base and the four corners of the lower surface of the bearing platform correspondingly; and the center pushing and lifting device comprises a four-way hydraulic oil cylinder and a hydraulic pump, the four-way hydraulic oil cylinder comprises a center cylinder, cylinder barrels fixedly arranged in the four directions of the center cylinder and piston rods arranged in the cylinder barrels, and the four piston rods of the four-way hydraulic oil cylinder abut against lower arm wheels of rolling supporting arms of the fork-shaped frame sets correspondingly. The lifting platform has extremely high stability which is far better than that of an existing lifting platform only provided with a supporting stand column on one side or in the middle. In addition, an installation method of the four-way hydraulic oil cylinder avoids applying supporting force in the inclined direction, avoids lateral pressure, and can also prevent the piston rods from rotating along with the fork-shaped frame sets, so that the burden of the oil cylinder can be reduced, and the service life of the oil cylinder can be prolonged.

    一种中心推升式安全升降平台,属于升降设备技术领域,包括底座、承载平台、叉形架组和中心推升装置,所述叉形架组设有四个并分别设置在底座上表面和承载平台下表面的四个角部;所述中心推升装置包括四向液压油缸和液压泵,所述四向液压油缸包括中心缸和固定设置在中心缸四个方向的缸筒以及设置在每个缸筒中的活塞杆,所述四向液压油缸四个活塞杆分别抵接叉形架组的滚动支撑臂的下臂轮;这种升降平台会有极高的稳定性,远远超过目前的只有一侧或中间有支撑立柱的升降平台;另外四向液压油缸安装方法避免施加倾斜方向的支撑力,并避免侧向压力,也可避免活塞杆随叉形架组转动,既可减少油缸负担,又可延长油缸的使用寿命。


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    Title :

    Center pushing and lifting type safe lifting platform


    Additional title:

    一种中心推升式安全升降平台


    Contributors:
    LI DAIBI (author) / LI QINGDI (author) / MA GUOXU (author)

    Publication date :

    2021-05-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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