Piston type elevator buffering device

The invention discloses a piston type elevator buffer device and relates to an elevator buffer device. The elevator buffering device is mainly designed for solving the problem that an existing elevator buffering device needs to be provided with an elevator shaft and a pit. The upper end of the cylinder is connected with an upper flange cover which is provided with an upper vent hole, and the lower end of the cylinder is connected with a lower flange cover which is provided with a lower vent hole; a plurality of grooves are formed in the outer circle of a piston in the air cylinder, and supporting rings or sealing rings are arranged in the grooves. The jackscrew extends into the groove in the side wall of the piston to fix the traction rope. And the lower end of the traction rope extends out of the lower ventilation hole. The top of the piston is fixed with a choke plug, and a traction rope passes through the piston and the choke plug. The two or more air cylinders are arranged on all the side faces of the ele