Auxiliary mechanism for coal mine measurement

The utility model discloses an auxiliary mechanism for coal mine surveying, which relates to the technical field of coal mine surveying and comprises a workbench, a gas measuring instrument and a base, a moving box is fixedly arranged on the lower surface of the workbench, a moving groove is arranged in the moving box, a fixed box is slidably arranged in the moving groove, and a fixed block is fixedly arranged on the upper surface of the fixed box. A lifting screw rod is rotatably arranged in the fixed box, the lifting screw rod is in threaded connection with the fixed block, a driven gear is fixedly arranged at the upper end of the lifting screw rod, a fixed plate is fixedly arranged on the inner wall of the moving groove, the lifting screw rod is rotatably connected with the fixed plate, a transmission rod is rotatably arranged on the moving box, and a driving gear is fixedly arranged on the transmission rod; the driving gear is meshed with the driven gear, and a first movable handle is fixedly arranged at