Mortise and tenon reinforced type profile steel damping and noise-reducing telescopic device

The utility model belongs to the technical field of bridge equipment. The utility model discloses a mortise and tenon reinforced type profile steel damping and noise-reducing telescopic device. The device comprises a supporting cross beam, boundary beam profile steel and a middle beam, the device further comprises a damping device, a fixing device, an anchoring device and a shifting device. A groove for placing a damping device is formed in the supporting cross beam; the shock absorption device comprises an upper plate, a lower plate and a damping spring shock absorber located between the upper plate and the lower plate. A first riveting blind hole with an upward opening is formed in the upper plate; a vertical first riveting through hole is formed in the lower plate; second riveting through holes in one-to-one correspondence with the first riveting blind holes in position are formed in the bottom of the middle beam; wherein a first riveting through hole is formed in the middle beam, asecond riveting blind ho