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Multi-plane stair climbing wheelchair

A stair-climbing wheelchair and multi-plane technology, which can be used in vehicle rescue, patient chairs or special transportation tools, medical transportation, etc. The effect of space range, ensuring safety and good comfort

Active Publication Date: 2020-09-29
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method of climbing stairs is that it needs to be manually operated to the first step and adapt to the shape of the steps, and it cannot be fully automated. At the same time, in the process of climbing or descending the stairs, it is impossible to ensure that the human body is on a horizontal plane, and it is easy to be tilted by the steps. degree of impact, greatly reducing the comfort of the occupants
[0003] In addition, for bumpy roads, small obstacle steps and other road surfaces, the functions of shock absorption and obstacle surmounting cannot be achieved.
In a further design, it is impossible for the occupant to adjust the inclination of the backrest, which will easily cause the occupant to suffer from waist pain and other problems caused by sitting for a long time, and ultimately affect the comfort of the occupant

Method used

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  • Multi-plane stair climbing wheelchair
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] When the wheelchair is driving on a bumpy road, by switching the wheel-track mode to the track mode, the motor driving the ball screw rotates in the opposite direction, driving the ball screw to rotate, and prompting the ball screw nut to move along the ball screw. The lower axial movement, so that the entire track 12 is released. The main crawler is on the ground. At this time, the servo of the auxiliary crawler does not work, and the auxiliary belt is folded. Then complete the work of advancing by controlling the rotating speed of the left crawler motor 22 and the right crawler motor 28, and realize turning by controlling the speed difference of the two motors.

Embodiment 2

[0043] When the wheelchair is driving on a flat road, by switching the wheel-track mode to the wheel mode, the motor driving the ball screw rotates forward, driving the ball screw to rotate, and prompting the ball screw nut to move along the ball screw. The upward axial movement causes the track to be retracted as a whole and the wheels to land on the ground. At this time, the work such as turning and advancing is completed by controlling the rotating speed of the driving wheel motor. When the wheel mode is adopted, the moving is stable and the speed is fast.

Embodiment 3

[0045] When using a wheelchair to lie down and rest, by switching the wheel-track mode to the track mode, the main belt is on the ground, and then the auxiliary track steering gear starts to work. Through the control of the auxiliary track steering gear, the auxiliary belt rotates 180 degrees to expand to the horizontal direction , to ensure that the wheelchair as a whole has a larger contact area with the ground, and finally the inclination of the backrest 1 can be adjusted by adjusting the armrests to make it reach the most comfortable angle. The adjustment of the angle of the seat back allows the occupant to lie down or sit upright.

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Abstract

The invention discloses a multi-plane stair climbing wheelchair. The wheelchair is divided into three major parts, namely a seat whole body, a chair frame whole body and a crawler belt whole body. A backrest, armrests and a seat are arranged in the seat whole body, and the inclination degree of the backrest is adjusted by adjusting the positions of clamping grooves in the lower portions of the armrests. The seat whole body is connected with the crawler belt whole body through a ball screw and a hydraulic rod, the horizontal state of the seat in a stair climbing process is controlled by adjusting the lengths of the ball screw and the hydraulic rod, and the damping purpose can be achieved in a running process; and the crawler belt whole body is connected with the chair frame whole body. Thechair frame whole body comprises a chair frame, driving wheels and universal wheels, and a fault self-locking system is arranged at the position of a main crawler belt, so that it is guaranteed that casualties are avoided when a fault occurs in the stair climbing process. An auxiliary crawler belt is connected with a non-power wheel of the main crawler belt through a steering engine, so that stairs with different inclination degrees can be adapted. All the wheels adopt independent power devices, so that the functions of making a turn and the like can be achieved in a relatively small space.

Description

technical field [0001] The invention relates to the technical field of wheelchairs, in particular to a stair-climbing wheelchair for use on multiple planes. Background technique [0002] Existing wheelchairs are more intelligent, have liberated people's hands, and can be controlled independently by the occupants. For example, the Chinese utility model patent whose notification number is CN210019986U discloses "a seat with a function of climbing stairs", which enables a wheelchair to climb stairs by installing a backrest track frame. The disadvantage of this method of climbing stairs is that it needs to be manually operated to the first step and adapt to the shape of the steps, and it cannot be fully automated. At the same time, in the process of climbing or descending the stairs, it is impossible to ensure that the human body is on a horizontal plane, and it is easy to be tilted by the steps. The degree of impact greatly reduces the comfort of the occupants. [0003] In ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61G5/06A61G5/10A61G5/12
CPCA61G5/061A61G5/066A61G5/101A61G5/1013A61G5/1067A61G5/12A61G5/1051
Inventor 张滕马嘉豪胡苏阳王勇越岳晓奎
Owner NORTHWESTERN POLYTECHNICAL UNIV