Trolley suitable for different stair heights

Abstract

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.

Description

Technical field [0001] The invention relates to a trolley adapted to different staircase heights, belonging to the field of load handling devices. Background technique [0002] The appearance of stairs reduces the area of ​​the house, makes full use of the limited living space, and provides a convenient passage for entering and exiting high-rise buildings, and establishes a link of vertical transportation links. But when we carry heavy objects upstairs, we find it very difficult. At present, the trolleys for auxiliary loads mainly adopt the planetary wheel structure. When going up the stairs, the supporting force of the ground is used to help users save effort, and it can also maintain a relatively high level on flat ground. It is in a good stable state, but it still needs to be lifted by the user during the upward transportation process, and the upward process is greatly limited by the height of the stairs. If the height of the stairs exceeds the height of the wheels, the planet...

AI Technical Summary

Problems solved by technology

However, it is very difficult for us to transport heavy objects upstairs. At present, the trolleys for auxiliary loading mainly use planetary wheel structures. It is in a good stable state, but it still needs to be lifted by the user during its upward transportation, and the process of going upstairs is limited by the height of the stairs. If the height of the stairs exceeds the height of the wheels, the planetary gear mechanism will not be able to provide support

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