Mechanism for adjusting height of laser module

The utility model discloses a mechanism for adjusting the height of a laser module, which comprises the support frame, the support frame comprises a dovetail sliding block, a tightening piece is arranged on the outer side of the support frame, the tail end of the tightening piece penetrates through the support frame, an abutting piece is arranged at the tail end of the tightening piece, and the abutting piece is located between the dovetail sliding block and the support frame. A dovetail groove is formed in the outer side of the dovetail sliding block and wraps the dovetail sliding block, a manual screwing nut needs to be rotated, detachable screwing fan blades on the outer side can be rotated under the hand sliding condition, transmission is conducted on transmission gears on the two sides through a rotating gear in the middle of a connecting bolt, and the bolt is pushed to rotate inwards at the same time; at the moment, the connecting bolt and the pushing bolts on the two sides push the aluminum column at t