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Stair climbing wheelchair

A technology for climbing stairs and wheelchairs, which can be used in patient chairs or special transportation tools, vehicle rescue, medical transportation, etc.

Inactive Publication Date: 2014-12-17
刘继伦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The stair-climbing wheelchair of the present invention discloses a new scheme, which adopts a wheel chain system to drive two sets of four-legged tripods to perform alternate forward ascending and descending movements, which solves the problem of wheelchairs going up and down stairs

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as Figure 8 Shown, the retractable mechanism of telescopic inner tripod front leg 311, telescopic inner tripod rear leg 312, telescopic outer tripod front leg 321 and telescopic outer tripod rear leg 322 is an electric gear screw transmission device, electric Gear screw transmission device comprises tripod motor 331, tripod motor transmission gear 332, screw driving gear 333 and screw rod leg 334, and tripod motor 331 drives screw driving gear 333 by tripod motor driving gear 332, and screw driving gear 333 passes through and screw rod. The inner and outer helical screw connections of the legs 334 drive the screw legs 334 to move up or down.

Embodiment 2

[0031] Such as Figure 9 Shown, the retractable mechanism of telescoping inner tripod front leg 311, telescopic inner tripod rear leg 312, telescopic outer tripod front leg 321 and telescopic outer tripod rear leg 322 is an electro-hydraulic screw drive, electric The hydraulic screw transmission device comprises a tripod motor 331, a tripod motor transmission gear 332, a screw drive gear 333, a screw leg 334 and a hydraulic chamber 335, the lower end of the screw leg 334 is provided with a piston connected to the hydraulic chamber 335, and the tripod motor 331 drives the screw drive gear 333 through the tripod motor transmission gear 332, and the screw drive gear 333 drives the screw leg 334 to move up or down by connecting with the internal and external helical threads of the screw leg 334.

[0032] One end of the main transmission rocker arm I233 is fixedly connected to the inner side of the wheel disc of the II-level main transmission gear 232, the other end of the main tra...

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Abstract

The invention relates to a stair climbing wheelchair, which comprises a wheelchair stair climbing device, a wheelchair and walking wheels, wherein the wheelchair stair climbing device comprises a power part, a gear chain power train, and a stair climbing structure, and the power part comprises a power source and a power source driving gear; the gear chain power train comprises a device framework, a main drive axle and a pair of driving gear chain mechanisms, and the device framework comprises a framework body and a pair of gear chain supports; the main drive axle comprises a main drive shaft and a power source driven gear, and the driving gear chain mechanism comprises I-class and II-class main drive gears and main drive rockers I and II; the stair climbing structure comprises a pair of stair climbing inner foot stands and outer foot stands, and the stair climbing inner foot stand comprises an inner foot stand linking rod, a telescopic inner foot stand front leg and a telescopic inner foot stand back leg; the stair climbing outer foot stand comprises an outer foot stand linking rod, a telescopic outer foot stand front leg and a telescopic outer foot stand back leg. A wheel chain train is used to drive the two sets of four-legs foot stands to make alternant forward rising and falling movement, and the stair climbing wheelchair is simple and reliable in structure, and is safe and convenient to use.

Description

technical field [0001] The invention relates to a wheelchair, in particular to a wheelchair capable of climbing stairs, and belongs to the field of wheelchairs. Background technique [0002] At present, wheelchairs with the function of climbing stairs can be roughly divided into two types: lifting type and wheeled type. The lift-type stair climbing system mainly includes the wheel legs that can be freely retracted and lifted and the dynamic source components that drive the wheel legs. For example, the wheelchair stair climber disclosed in the patent document of 200720032234. , a lifting device and a driving device, the lifting device includes a two-pole lifting device connected by a connecting rod, when this lifting device is working, the wheelchair and the user on it should be lifted together, placed on the upper step of the stairs, and then cycled , to reach the purpose of transporting the wheelchair upstairs together with the user. This kind of lifting device puts forwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61G5/06A61G5/10
Inventor 刘继伦
Owner 刘继伦
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