Landing leg mounting seat for semitrailer

The utility model discloses a semitrailer landing leg mounting seat, which comprises a mounting plate and landing legs mounted on the two sides of the mounting plate, a plurality of mounting holes are uniformly formed in the outer surface of the mounting plate, a plurality of bolts are inserted into the outer surfaces of the landing legs, and the plurality of bolts penetrate through the outer surfaces of the two sides of the mounting plate. The outer surface of the bolt is in threaded connection with a nut, a limiting plate is arranged on the outer surface of the side, away from the supporting legs, of the mounting plate, the bolt penetrates through the outer surface of the limiting plate, the side, close to the mounting plate, of the limiting plate is an inclined plane, and an abutting mechanism is arranged between the limiting plate and the mounting plate. The inclined block is pushed to move towards the inclination angle direction of the back of the limiting plate, so that the inclined block abuts against