Door closing oil cylinder

• Main Author: HU ZHENHUI
• Format: Patent
• Language: Chinese; English
• Published: 28.01.2022
• Subjects: BLASTING; CHECKS FOR WINGS; CYLINDERS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; 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; KEYS; LIGHTING; LOCKS; MECHANICAL ENGINEERING; PISTONS; SAFES; SEALINGS; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; THERMAL INSULATION IN GENERAL; WEAPONS; WINDOW OR DOOR FITTINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING

The utility model belongs to the technical field of oil cylinders, and particularly relates to a door closing oil cylinder which is characterized in that an oil cylinder body comprises a cylinder barrel, a pull lug is fixedly arranged at the left end of the cylinder barrel, a bronze bearing is fixedly installed on the surface of the pull lug, a bolt hole and a countersink are formed in the two sides of the top of the cylinder barrel respectively, and a cylinder cover is fixedly connected to the right end of the cylinder barrel. A supporting ring and a dustproof ring are arranged on the inner wall of the cylinder cover in a surrounding mode, and a circle of O-shaped ring is arranged outside the cylinder cover, according to the door closing oil cylinder, sealing and dust prevention are effectively conducted on the piston rod through the supporting ring and the dustproof ring, the sealing effect in the oil cylinder is improved through the combined sealing gasket, and the service life is prolonged; the fixed buff