The invention relates to a pneumatic lift. The pneumatic lift comprises a shaft way, a lift car and a vacuum motor. A lift car seal ring is arranged on the top of the lift car. A top layer seal ring is arranged on the top of the shaft way. The lift car seal ring, the top layer seal ring and the side wall of the shaft way form a sealed space. The vacuum motor extracts or discharges air in the sealed space and drives the lift car of the pneumatic lift to move up and down. The overlooking outline of the shaft way is not a perfect circle. The outer outline of the lift car is matched with the shape of the shaft way. The lift car is limited in the shaft way. According to the pneumatic lift, the lift car is limited and guided through the shape of the shaft way, the lift car is prevented from rotating, the influence of a protruding guide rail on a seal effect is avoided, and the problem that noise is generated by air flow due to a poor seal effect is solved.
Pneumatic lift
2015-07-22
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |