Patent ID: 8523156

Claim:
A positioning and pressing device for auxiliary machining of the motor train underframe characterized in that it comprises a crossbeam, two supporting frames, two rotary vertical pressing structures, a lateral positioning structure, a lateral holding structure and two adjustable intermediate supporting structures; wherein; the two supporting frames are mounted in sliding manner on two sides of a upper surface of the crossbeam, the two rotary vertical pressing structures are respectively mounted on the tops of the two supporting frames, the lateral positioning structure is mounted on the side of one of the two supporting frames, the lateral holding structure is mounted on the side of the other one of the two supporting frames, and the two adjustable intermediate supporting structures are mounted on the upper surface of the crossbeam and between the two supporting frames; the adjustable intermediate supporting structure comprises a supporting holder and a plurality of T-shaped cushion blocks; the supporting holder is connected to the upper surface of the crossbeam by bolts, a upper part of the supporting holder is equipped with a U-shaped groove along the axial direction of the crossbeam, two side plates of the U-shaped groove are oppositely equipped with a plurality of first via holes at intervals; and the vertical parts of the T-shaped cushion blocks are equipped with second via holes corresponding to the first via holes, a plurality of T-shaped cushion blocks are respectively inserted in the U-shaped groove and connected with the U-shaped groove by pins through the first via holes in two side plates of the U-shaped groove and the second via holes in the vertical parts of the T-shaped cushion blocks.