Stair-climbing trolley assist device and stair-climbing trolley

Abstract

The invention provides a ladder-climbing cart power assisting device. The ladder-climbing cart power assisting device comprises a crank and rocker mechanism and a chain transmission mechanism. The movement output end of the crank and rocker mechanism is fixedly connected with the movement input end of the chain transmission mechanism. The crank and rocker mechanism comprises a crank, a connecting rod, a rocker and a rack, wherein the first end of the rocker is a free end, the middle end of the rocker is hinged to the first end of the rack, the second end of the rocker is hinged to the first end of the connecting rod, the second end of the connecting rod is hinged to the first end of the crank, and the second end of the crank is fixedly connected with the movement input end of the chain transmission mechanism. The chain transmission mechanism comprises a driving chain wheel, a driven chain wheel and a transmission chain, wherein the driving chain wheel is connected with the driven chain wheel through the transmission chain, the driving chain wheel serves as the movement input end of the chain transmission mechanism, the second end of the crank is fixedly connected with the side edge of the driving chain wheel, and the axis of the driving chain wheel is in transmission connection with the second end of the rack. The invention further provides a ladder-climbing cart.

Description

technical field [0001] The invention relates to the technical field of handling equipment, in particular to a step-climbing trolley booster and a stair-climbing trolley. Background technique [0002] The use of stairs is very common in modern society, such as multi-storey houses, overpasses, factory buildings and so on. In many cases, we need to climb stairs with loads, such as delivering water and gas. At the same time, wheelchairs and baby carriages in the prior art generally need to be lifted up, which is also very inconvenient. In addition, many mountain roads only have steps but no driving lanes, and people usually need to carry them on their backs or shoulders to transport things to the top of the mountain. Contents of the invention [0003] In view of this, it is necessary to provide a step-climbing trolley booster and a stair-climbing trolley. [0004] A step-climbing trolley assisting device, comprising a crank and rocker mechanism, a chain transmission mechanis...

AI Technical Summary

Problems solved by technology

In many cases, we need to climb stairs with loads, such as delivering water and gas. At the same time, wheelchairs and baby carriages in the prior art generally need to be lifted up, which is also very inconvenient.

In addition, many mountain roads only have steps but no driving lanes. Usually, transporting things to the top of the mountain requires people to carry them on their backs or shoulders.

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