Damping buffer mechanism at tail end of hydraulic actuator

• Main Authors: WANG CHI, ZENG HUAYONG, TIAN JIANHONG, WANG XIYUAN
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2022
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The tail end damping buffer mechanism of the hydraulic actuator is compact in structure and rapid in response. According to the technical scheme, a working cylinder barrel is divided into a buffering cavity and a hydraulic cavity through a piston rod, a radial pipe nozzle of an end cover is communicated with the buffering cavity through an end throttling hole in a center step hole of the end cover and an end eccentric flow channel of an eccentric step hole below the end cover, and a first-order step shaft of the piston rod is fixedly connected with a sleeve. The end of the second-order cantilever valve rod is fixedly connected with a locking nut, a buffering valve element assembled on the piston rod valve rod is sleeved with a buffering spring and restrained between the locking nut and a spring seat sleeved outside the piston rod valve rod, and the buffering valve element is limited by the locking nut, bears the force of the buffering spring and can move on the piston rod valve rod in a reciprocating mode. A