Mahjong machine operation board lifting transmission assembly

The utility model discloses a mahjong machine operation board lifting transmission assembly which comprises a fixing base, a lifting pipe and a lifting pipe sleeve. At least part of the lifting pipe sleeve is rotationally arranged in the fixed seat; the lower portion of the lifting pipe is arranged in the lifting pipe sleeve, and the lifting pipe is slidably connected with the fixing base in the vertical direction. The lifting pipe sleeve rotates to drive the lifting pipe to do lifting motion; a circle of outer teeth are arranged on the peripheral face of the lifting pipe sleeve, and notches are formed in the positions, corresponding to the outer teeth of the lifting pipe sleeve, of one side of the fixing base. The outer teeth are arranged on the peripheral face of the lifting pipe sleeve, the notches are formed in the corresponding positions of the fixing base to receive power input, the lifting pipe is driven to do lifting motion through rotation of the lifting pipe sleeve, the lifting pipe does not need to