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Electrically driven stairs climbing hard cart and its deformation wheel

An electric vehicle and deformable wheel technology, which can be applied to the rescue of vehicles, patient chairs or special transportation tools, medical transportation, etc., can solve the problems of complex control mechanism, low work efficiency, complicated operation, etc.

Inactive Publication Date: 2007-11-07
刘志田 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The various stair climbing vehicles developed at present mainly fall into three categories: the first type is a stepping stair climbing vehicle, which is an intermittent advancing method, and its operation is more complicated and its work efficiency is lower.
The second type is a star-wheeled stair-climbing vehicle, which has poor stability when going up and down stairs, and has a large volume, which is inconvenient to use on narrow and small stairs.
This kind of electric stair-climbing vehicle needs to hold up the entire car body when going up and down the stairs, and only relies on the crawler mechanism to run and climb the stairs. Therefore, in order to ensure safety and stability of lifting the car body, the crawler mechanism is relatively large and the control mechanism is complicated. The operation is not flexible enough and the energy consumption is high

Method used

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  • Electrically driven stairs climbing hard cart and its deformation wheel
  • Electrically driven stairs climbing hard cart and its deformation wheel
  • Electrically driven stairs climbing hard cart and its deformation wheel

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Embodiment Construction

[0024] As shown in Figure 1, the structure of the stair-climbing electric vehicle of the present invention is that a seat 5 is installed on a vehicle frame 1, and a front wheel 11 is installed at the bottom of the vehicle frame, and the front wheel is preferably a universal wheel. The rear wheel 2 is a floating connection mode in which the wheel axle is connected with the vehicle frame through a large shift fork. In Fig. 3, components such as in-wheel motor 14, speed changer 21, clutch 22 and brake 23 are housed on the axle of rear wheel 2. The electric control box 6 that controls the running state of the stair-climbing electric vehicle can be installed on the handrail of the vehicle frame or on the push handle of the wheelchair type vehicle frame according to the needs of different users. Also be provided with guard plate 9 at the front end of vehicle frame 1, this guard plate can play certain protective effect when this vehicle climbs stairs.

[0025] Among Fig. 1, crawler ...

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PUM

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Abstract

The present invention relates to one kind of electrically driven stairs climbing handcart and its deformation wheel. The electrically driven stairs climbing handcart has a frame, a chair, wheels, a crawler belt mechanism, an electric control box, an elevation controlling mechanism, a cross shaft lever; a leveling shaft connected to two telescopic rods; two shifting forks fixed separately to ends of the leveling shaft; tension springs in the bottom of the frame for connecting the crawler belt mechanism; and a tipping preventing control mechanism connected to the electric control box. The deformation wheel for the stairs climbing handcart has a wheel dish, a coaxial cam, spokes and springs connected to the wheel dish, a wheel rim and an elastic tire.

Description

technical field [0001] The invention relates to a chair specially suitable for the sick and weak, in particular to a stair-climbing electric vehicle with a device for overcoming obstacles, and a deformable wheel for the stair-climbing vehicle suitable for use on the stair-climbing vehicle. Background technique [0002] The various stair-climbing vehicles developed at present mainly contain three classes: the first class is a stepping-type stair-climbing vehicle, which is an intermittent advancing mode, and its operation is more complicated and the work efficiency is lower. The second type is a star-wheel type stair climbing vehicle, which has poor stability when going up and down stairs, and has a large volume, which is inconvenient to use on narrow and small stairs. The third category is the crawler-type electric stair-climbing vehicle. Its structure is to fix the seat, front and rear wheels and electric control box on the frame, and the hub motor, transmission, clutch and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61G5/06
Inventor 王彦杰刘志田
Owner 刘志田
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