A bidirectional obstacle-surmounting wheelchair and obstacle-surmounting method

By employing a symmetrically arranged tracked legs and wheel design, combined with a drive mechanism and control system, the wheelchair achieves bidirectional obstacle-crossing capability, solving the problems of existing wheelchairs in complex environments and adapting to escalators, thus improving freedom of movement and safety.

CN123037895APending Publication Date: 2026-11-06CHANGSHA JIUFANG WANLIU INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202610981268.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-02
Publication Date
2026-11-06

AI Technical Summary

Technical Problem

Existing wheelchairs have limited obstacle-crossing ability and unidirectional orientation when facing complex environments, and cannot be adapted to escalators, thus restricting users' freedom of movement and safety.

Method used

Design a bidirectional obstacle-crossing wheelchair with symmetrically arranged walking mechanism components, including tracked legs and wheel feet. It achieves equal obstacle-crossing capabilities in both forward and backward directions through a drive mechanism and control system, allowing it to cross obstacles without turning around. It is equipped with an obstacle detection unit and tilt sensor, and dynamically adjusts the seat center of gravity to maintain stability.

Benefits of technology

It enhances the freedom and safety of wheelchairs in complex environments, can seamlessly switch between flat ground and obstacle-crossing modes, and is compatible with escalators to achieve barrier-free access.

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Abstract

This invention provides a bidirectional obstacle-crossing wheelchair and an obstacle-crossing method. The bidirectional obstacle-crossing wheelchair includes a frame, a seat, a walking mechanism assembly, and a control system. The walking mechanism assembly is symmetrically arranged around the bottom of the frame and is divided into a front walking mechanism assembly and a rear walking mechanism assembly. The front and rear walking mechanism assemblies have identical structures, enabling the wheelchair to have equal obstacle-crossing capabilities in both forward and backward directions. The walking mechanism assembly includes track legs and wheel feet. The track legs are hinged to the frame, and the lower surfaces of the wheel feet and track legs form a continuous support surface. The frame is provided with a drive mechanism for driving the walking mechanism assembly to swing so that all four wheel feet are on the ground, or all four wheel feet and track legs are on the ground. The drive mechanism is electrically connected to the control system. This invention achieves seamless switching between flat ground and obstacle-crossing scenarios, solving the problem of difficult travel for wheelchair users and improving their freedom of movement and safety.
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Citation Information

Patent Citations

  • Stair climbing wheelchair auxiliary system

    CN223438778U