Fixing structure capable of easily centering piston rod of hydraulic cylinder with trunnion of valve in cross direction

• Main Authors: ZHANG GUOFENG, GAI GUANGPING, DONG XIA, WANG YALONG, HAO HONGDA, WEI YONGZHONG, CHEN WENXIN, HU JINXIN, FAN XIANGHUI, ZHANG LIN, GUO JIANMIN
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

A fixing structure capable of easily centering a piston rod of a hydraulic cylinder with trunnions on a valve in the cross direction comprises a supporting body, a cavity is formed in the center of the supporting body, and a first trunnion and a second trunnion are coaxially and symmetrically arranged on the two outer sides of the supporting body; a left gland and a right gland are arranged at the two ends, in the direction perpendicular to the axis of the first trunnion and the axis of the second trunnion, of the supporting body respectively, semicircular grooves in the lower end faces of the left gland and the right gland and semicircular grooves in the end faces, making contact with the supporting body, of the supporting body form a circular cavity, and a wear-resisting bush is assembled in the circular cavity. The problem that thrust of the valve cannot coincide with the axis of the valve rod or the axis of the moving part in the driving process of the driver is solved, the valve rod or the moving part is