Lifting supporting arm for parking anti-running device

The utility model relates to a part for a parking anti-running device, in particular to a lifting supporting arm for a parking anti-running device. The lifting supporting arm for the parking anti-running device comprises a lifting positioning plate, an arm body of which one end is connected with the lifting positioning plate, a positioning block connected with the other end of the arm body, and a brake device connecting piece fixedly arranged on the arm body. The lifting supporting arm is characterized in that: a lifting sliding assembly groove is arranged in the lifting positioning plate, the lifting sliding assembly groove is formed by the means that an upper flat groove, a lower flat groove and a middle inclined groove are communicated with one another or a lower flat groove and an inclined groove are communicated with each other, and a connecting hole is arranged in the positioning block. According to the lifting supporting arm for the parking anti-running device, a brake rail can be well adjusted to a re