Abstract An electric wheelchair comprising a movable seat part (1), a body part (2) served as 5 a support for the seat part, a seat adjustment mechanism (3) arranged under the seat part, a bottom part (4), and a crawler moving mechanism (5). The crawler moving mechanism (5) comprises two sets of crawlers arranged respectively at both sides underneath the bottom part, and each of which comprises a front crawler and a rear crawler. The bottom part (4) is comprised of a front portion and a rear portion, 10 which are movably connected with a coupling arrangement and capable of deflection with respect to each other. The crawler moving mechanism (5) further comprises movable stretching crawlers arranged respectively at outside of the front crawler, and fixed stair-climbing crawlers arranged respectively at outside of the rear crawler, wherein a free end of the fixed stair-climbing crawler forms a specific 15 angle relative to the rear crawler.本發明涉及一種電動輪椅,其包括移動式座椅部分,用作座椅支架的車身部分,設置在座椅下面的座椅調節機構,車底部分,以及履帶行走機構,所述履帶行走機構包括分別設置在所述車底部分兩側下面的兩組履帶,每一組所述履帶包括前履帶和後履帶。所述車底部分由前後兩個部分組成,該兩個部分通過連接裝置活動式連接並可相互相對偏轉。所述履帶行走機構還包括分設在前履帶外側的活動伸延履帶,以及分設在後履帶外側的固定上梯履帶,固定上梯履帶的自由端相對後履帶成一定角度。1...座椅部分2...車身部分5...履帶行走機構9...軸桿11...安全鎖裝置14...桿件73...大齒輪91...連接桿100...支承組件101、102、108、109...縱向板103...空間104...滾軸輪105...圓弧形底邊的齒107...連接件150、160、170...控制桿201、203...縱向側板
