| 摘要 |
PURPOSE: A variable hydraulic transmission apparatus for a manual lift is provided to lift a palette or a table on which cargo is loaded by repetitively operating a handle or a foothold with constant force regardless of weight of the cargo, thereby improving workability. CONSTITUTION: A variable hydraulic transmission apparatus for a manual lift comprises a variable device(100) and a hydraulic block(200). The variable device comprises a first case(110), a variable cylinder(120), a connecting member(130), and a pumping cylinder(140). The first case is fixed in an end part of a manipulation part. The variable cylinder automatically varies working stroke of the manipulation part depending on weight of cargo loaded on a loading part while operating the manipulation part. The connecting member connects the variable cylinder and the hydraulic block. The pumping cylinder offers hydraulic pressure for lifting the loading part depending of repetitive operation of the manipulation part. The hydraulic block comprises a body, a guide unit, a working stroke control unit, and a flow path selection unit. |
