The invention relates to a mechanical self-powered
wheelchair for walking up and down
stairs, which belongs to the technical field of wheelchairs. The mechanical self-powered
wheelchair comprises a seat self-balancing adjusting mechanism, a
wheelchair frame, a hand wheel, crawler walking mechanisms, a multi-path
power transmission system, hand wheel elevating mechanisms, guide wheel mechanisms, a one-way
ratchet wheel mechanism and braking mechanisms, wherein the seat self-balancing adjusting mechanism is arranged on the upper part of the wheelchair frame; the multi-path
power transmission system is arranged on the lower part of the seat self-balancing adjusting mechanism and at the middle part position of the wheelchair frame; the hand wheel elevating mechanisms are arranged on both sides of the wheelchair frame; the walking mechanisms are arranged on both sides of the lower part of the wheelchair frame; the guide wheel mechanisms are arranged on the front two sides of the wheelchair frame; the braking mechanisms are arranged both sides of the wheelchair frame close to seat handrails; and a one-way
ratchet wheel is arranged at the front end of the wheelchair frame. The invention provides a mechanical self-powered wheelchair for walking up and down
stairs, which is economical and reasonable in price, moves stably and continuously, has safe and reliable performance, can be used for assisting a user in walking up and down
stairs without help of other people, and is convenient to operate.