The invention discloses a trolley suitable for different stair heights. An advantage of conveniently pulling the trolley to climb the stairs is achieved. The trolley comprises a carrier. A driving device and a telescopic wheel set connected with an output end of the driving device are arranged at the bottom of the carrier, the telescopic wheel set comprises a main shaft frame coaxially connected with the output end, claw-shaped supporting plates located at the two ends of the main shaft frame and ladder climbing wheels located at the arm ends of the claw-shaped supporting plates, the main shaft frame is in linkage with the supporting plates, and the supporting plates and the ladder climbing wheels rotate relatively. The telescopic wheel set can adapt to the stairs with different heights, if the stairs are high, an extending length of the ladder climbing wheel is increased, and when the ladder climbing wheel with the lowest vertical height is located on the first step, the ladder climbing wheel with the higher vertical height can make contact with the higher step; and if the height of the stairs is lower, the ladder climbing wheel retracts, and at the moment, a path of each turn ofthe ladder climbing wheel is shortened so that the ladder climbing wheel can adapt to a low-step environment.
本发明公开了一种适应不同楼梯高度的手推车,具有能够便于拉动小车上楼梯的优势,包括载物架,所述载物架底部设有驱动装置、与驱动装置的输出端相连的伸缩轮组,所述伸缩轮组包括与输出端同轴相连的主轴架、位于主轴架两端的爪状支撑板、位于爪状支撑板臂端的爬梯轮,主轴架与支撑板联动,支撑板与爬梯轮之间相对转动。伸缩轮组可以适应不同高度的楼梯,如果楼梯高度较高,则将爬梯轮伸出长度增长,则能够使得竖直高度最低的爬梯轮在第一级台阶上时,竖直高度较高的爬梯轮能够触及高一级的台阶;若楼梯高度较低,则将爬梯轮缩回,此时爬梯轮每转一圈的路径就变短,也就能够适应低台阶环境。
Trolley suitable for different stair heights
一种适应不同楼梯高度的手推车
2020-08-14
Patent
Elektronische Ressource
Chinesisch