The invention discloses a lifting mechanism with adjustable lifting force. The lifting mechanism comprises a frame type base, wherein a sliding seat which can slide along the length direction of the bottom frame of the base is arranged on the inner side of the bottom frame of the base; the sliding seat is in threaded connection with a lead screw; the lead screw penetrates through the side frame of the base and is in threaded connection with the side frame; a hand shank is arranged at the end part of the lead screw; a lever which can swing up and down is also hinged to the sliding seat; one end of the lever is hinged to the lower end of a vertical connecting rod through a bar-shaped hole formed in the lever and a bolt inserted in the bar-shaped hole; the connecting rod can make reciprocating movement up and down through the effect of a cam; the other end of the lever is hinged to the lower end of a lifting rod; the lifting rod penetrates through a first guide hole in the top frame of the base; a lifting seat for accommodating a workpiece is fixed at the upper end of the lifting rod; a pressure spring is arranged between the lower end of the connecting rod and the bottom frame.
Lifting mechanism with adjustable lifting force
2015-11-18
Patent
Electronic Resource
English
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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