Large guide rail verification laser tracker device

The utility model discloses a large guide rail verification laser tracker device which comprises a long rail seat which is connected with a laser tracking reflection mechanism in a sliding mode. The mechanism comprises a U-shaped sliding seat connected to a long track seat in a sliding mode, and a laser tracking reflector component is assembled and connected to the top of the U-shaped sliding seat; the component comprises a fixed vertical seat fixedly connected to the top of a U-shaped sliding seat, a sliding sleeve seat is connected to the fixed vertical seat in a sliding mode, and a lifting air cylinder for pushing the sliding sleeve seat to ascend and descend is assembled and connected to the top of the sliding sleeve seat. A plurality of laser tracking reflectors are fixedly assembled and connected to the side walls of the two sides of the sliding sleeve base respectively. The mechanism further comprises a lead screw mechanism pushing the U-shaped sliding base to move. According to the device, the stable