Transmission device of expanding cabin

The utility model discloses a transmission device of an expanding cabin, which is provided with a stander which is horizontally arranged, wherein the stander is provided with a transmission mechanism, the expanding cabin is arranged on the transmission mechanism, the transmission mechanism is provided with a lead screw which is arranged on the stander, one end of the lead screw is connected with a power driving mechanism, the other end of the lead screw is fixedly connected with a nut guide pipe through a nut, the nut guide pipe passes through a guide seat which is fixed on the stander, the other end of the lead screw is provided with a locking separation mechanism which is connected with the expanding cabin, the guide seat is provided with a tightening bolt, the outer wall of the nut guide pie is provided with a long groove which is matched with the tightening bolt, two parallel linear guide rails are arranged on the lower part of the expanding cabin, the liner guide rails are matched with a guide rail seat,