The invention discloses a buffer
piston energy accumulator. According to the buffer
piston energy accumulator, an end cover of a cylinder body is arranged at one end of the cylinder body, a
piston is arranged in the cylinder body and located at one side of the end cover of the cylinder body, an oil
discharge opening is formed in the circle center of the end cover of the cylinder body and penetrates through the end cover of the cylinder body, one side, opposite to the end cover of the cylinder body, of the piston is provided with a boss, the surface, opposite to the piston, of the end cover of the cylinder body is provided with a buffer hole, a
throttle plug is arranged in the buffer hole, the side face of the end cover of the cylinder body is provided with a process hole, and a process plug is arranged in the process hole. When the piston moves towards the end cover of the cylinder body, the boss plugs up the oil
discharge opening to enable oil to flow to the oil
discharge opening through the
throttle plug, and the section area of the
throttle plug is far smaller than that of the oil discharge opening, so that the movement speed of the piston is reduced, and the buffer effect is achieved. The buffer piston energy accumulator is simple in structure, adjustable in buffer effect and low in manufacturing cost, eliminates abnormal sounds of the hydraulic
system generated when the piston hits against the end cover of the cylinder body, eliminates hydraulic
impact generated when the piston hits against the end cover of the cylinder body and prolongs the service life of the energy accumulator and sealing pieces.