The invention provides a hydraulic motor type hoisting jack. The hydraulic motor type hoisting jack comprises cylindrical cams, first gears, a machine frame, second gears, inward meshing five-star motors, a rising pedal, a hydraulic pump station, a falling pedal, supporting frames, universal wheels, semi-crescent gears, racks, a lifting rod and a third gear. The hydraulic motor serves as a power element and has high torque, control is achieved through a hydraulic system, and the rotating speed and torque of the hydraulic system can be flexibly controlled. In addition, the size of the hydraulic motor type hoisting jack is small, and the hydraulic motor type hoisting jack can adapt to narrow space, can center places where other large joisting machines can not enter and can be freely moved through the universal wheels at the bottom; and the cylindrical cams are used for transmission, the self-locking property is achieved, the hydraulic motor type hoisting jack can not automatically fall when the motor stops rotating, and extremely-high safety is achieved.
Hydraulic motor type hoisting jack
2015-12-23
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 |