Sealing adjusting device of trolley furnace

The sealing adjusting device comprises a furnace body, a furnace door and a trolley, the furnace door is arranged at the front end of the furnace body in a sliding mode through a lifting device, an inserting plate at the lower end of the furnace door corresponds to an inserting groove in the front end of the trolley, and an adjusting device is further arranged in an inner cavity in the front end of the trolley and comprises a worm. First gears are arranged on the two sides of spiral teeth on the worm, first racks are arranged above the first gears, first sliding blocks are arranged on the first racks, a worm wheel is arranged below the spiral teeth of the worm, a transmission rod is arranged on the worm wheel, a second gear is arranged on the transmission rod, and second racks are arranged above and below the second gear respectively. A second sliding block is arranged on the second rack; and the worm and the worm gear, the first gear and the first rack, and the second gear and the second rack are engaged wit