Semitrailer supporting leg

The utility model provides a semitrailer supporting leg which comprises a semitrailer carriage plate and a fixing seat vertically arranged at the bottom of the tail end of the semitrailer carriage plate, a supporting rod is vertically arranged on the fixing seat, and the top of the supporting rod is connected with the fixing seat through a supporting pin and a rotating pin. A connecting chain is further arranged at the bottom of the semitrailer carriage plate, and a fixing groove used for obliquely hanging and fixing the supporting rod is formed in the connecting chain. The semitrailer supporting leg can effectively prevent the tail end of a semitrailer from deforming, so that the strength of a semitrailer body is improved, and the service life of the semitrailer is prolonged. 本实用新型提供一种半挂车支腿，它包括半挂车车厢板和竖向设置在所述半挂车车厢板尾端底部的固定座，所述固定座上竖向设置有支撑杆，所述支撑杆的顶部与所述固定座通过支撑销和转动销相连接，所述半挂车车厢板的底部还设置有连接链，所述连接链上设置有用于斜向悬挂固定所述支撑杆的固定槽。该半挂车支腿可有效防止半挂车尾端变形，从而提高车体强度，提高半挂车寿命。