1. Stepping Support Stair Climbing Wheelchair
Stepping support type climbing wheelchair has a history of nearly one hundred years in foreign countries. After continuous evolution and improvement, it has become a kind of complex transmission mechanism in all forms of climbing wheelchair. Its principle is to imitate the human climbing action, supported alternately by two sets of supporting devices, in order to achieve the function of ascending and descending stairs. Stepping support type climbing wheelchair has been widely used in developed countries abroad.
2. Star-wheeled stair-climbing wheelchair
The climbing mechanism of star-wheeled climbing wheelchair consists of several small wheels evenly distributed on Y-shaped, five-star or +shaped tie rods. Each wheel can not only rotate around its own axis, but also rotate around its central axis with the tie rod. When walking on the flat ground, the wheels rotate, while when climbing stairs, the wheels rotate together to achieve the function of climbing stairs.
3. Crawler-type stair-climbing wheelchair
Stair-climbing wheelchair with caterpillar mechanism adopts a more continuous way of walking than star wheel mechanism. When the caterpillar leaves the upper step or moves to the next step, it will incline forward and backward because of the deviation of the center of gravity. Tracked climbing wheelchairs are not suitable for use in environments where the stairway is too smooth and the slope is greater than 30-35 degrees.
For the absolute guarantee of the safety of the disabled and the elderly upstairs and downstairs, priority will still be given to safer rather than cheaper wheelchairs. It is believed that with the reliability of step-by-step support wheelchair height, it will gradually become the mainstream in the future to serve more disabled and elderly groups.
From the Internet