The invention discloses a hand-operated carrier comprising a handle, a frame and a tread-lifting device, wherein the handle is composed of handrails and an upright rod; the frame is composed of a bull wheel, fork wheels, a fork, a front plate, a top plate and a supporting seat; each of two sides of the supporting seat and the front plate is provided with a shake frame; each shake frame is connected with a link assembly at the lower end of the fork; the link assembly is connected with the fork wheels so as to support the front end of the fork; and the tread-lifting device is composed of a link mechanism which can be disassembled into a parallelogram link mechanism and a second-class bar unit. A downward acting force is applied to a tread-lifting plate of the parallelogram link mechanism in the link mechanism, and the acting force on the tread-lifting plate can be amplified and transferred to the second-class bar unit according to the lever principle so as to enable a supporting bar I and a supporting bar II in the bar unit to be on a collinear position, so that the fork of the carrier can rapidly lift.
Hand-operated carrier
2015-12-02
Patent
Elektronische Ressource
Englisch
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 |