The invention discloses a mechanical lifting device capable of being expanded and adjusted. The device comprises a lifting main body, a ratchet wheel handle and a supporting frame, wherein the liftingmain body comprises a lifting base, a base, a screw rod, hinge plates and contraction blocks, the lifting base and the base are oppositely arranged, the screw rod is located between the lifting baseand the base, the screw rod is in threaded connection with the two contraction blocks, four hinge plates are arranged on each of the left side and the right side of the lifting base and the base, theupper ends of the first hinge plate and the second hinge plate in the four hinge plates are hinged to the lifting base, the lower ends of the third hinge plate and the fourth hinge plate in the four hinge plates are hinged to the base, the lower ends of the first hinge plates and the upper ends of the third hinge plates are hinged to one contraction block, and the lower ends of the second hinge plates and the upper ends of the fourth hinge plates are hinged to the other contraction block; and the ratchet wheel handle is installed at the end of the screw rod and can drive the screw rod to rotate, and when the screw rod rotates, the two contraction blocks move close to each other or away from each other, so that the lifting base ascends and descends relative to the base. According to the device, uniform lifting force can be applied to the periphery of a daughter board.

    本发明公开了一种可扩展调节的机械举升装置,包括升降主体、棘轮把手和支撑框架,升降主体包括举升座、底座、螺杆、铰接板和收缩块,举升座和底座相对设置,螺杆位于两者之间,螺杆上螺纹连接两个收缩块,举升座、底座的左右两侧均设有四根铰接板,四根铰接板中的第一铰接板和第二铰接板的上端与举升座铰接,四根铰接板中的第三铰接板和第四铰接板的下端与底座铰接,第一铰接板的下端、第三铰接板的上端和一个收缩块铰接,第二铰接板的下端、第四铰接板的上端和另一个收缩块铰接;棘轮把手安装在螺杆的端部,能够带动螺杆转动,螺杆转动时,两个收缩块相向运动或背向运动,使得举升座相对底座升降。本发明能够对子板四周施加均匀的举升力。


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    Title :

    Mechanical lifting device capable of being expanded and adjusted


    Additional title:

    一种可扩展调节的机械举升装置


    Contributors:
    YANG RENJIE (author)

    Publication date :

    2021-01-05


    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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