Single-output-rod symmetrical hydraulic oil cylinder of electro-hydrostatic actuator system

Abstract

The invention discloses a single-output-rod symmetrical hydraulic oil cylinder of an electro-hydrostatic actuator system. A cylinder barrel is included, and a telescopic rod penetrates through the inner wall of one side of the cylinder barrel. A sleeve is movably connected to the surface of one side of the cylinder barrel, and the telescopic rod penetrates through the interior of the sleeve. Cavities which are symmetrical up and down are formed in the sleeve. Threaded rods penetrate through the outer walls of the two sides of the sleeve through bolts, the edges of the threaded rods are in sealing fit with the inner wall of the sleeve, the threaded rods extend to the cavities, the tail ends of the threaded rods are connected with extrusion plates through bearings, a sponge block is arranged on the surface of one side of each extrusion plate, an oil injection pipe is fixed to the surface of one side of each sponge block, the oil injection pipes extend to the outer wall of one side of the sleeve, and the tail ends of the oil injection pipes are covered with dustproof covers. Oil outlets which are evenly distributed and correspond to the cavities are formed in the two sides of the sleeve, balls are rotationally connected into the oil outlets, and the surfaces of one sides of the balls are tightly attached to the outer wall of one side of the telescopic rod.

Description

technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to a single-rod symmetrical hydraulic cylinder of an electric hydrostatic actuator system. Background technique [0002] The hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy for reciprocating linear motion. A hydraulic cylinder generally includes a cylinder barrel, a cylinder bottom, a cylinder top, a piston rod and a piston, wherein the cylinder bottom and the cylinder top are respectively provided at the bottom and top two outlets of the cylinder barrel, and the first end of the piston rod (the extension end) The piston is movably arranged in the cylinder, the second end of the piston rod is located outside the cylinder top, the first end of the piston rod forms a rodless chamber together with the piston and the bottom of the cylinder, and the first end of the piston rod together with the piston and the cylinder to...

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Problems solved by technology

[0003] However, there are still some disadvantages in the existing hydraulic cylinders. When the cylinder barrel is used for a long time, some dust falling from the outside will accumulate on the telescopic end of the cylinder barrel and the telescopic rod, so that the telescopic rod may be slow and slightly blockage, for which we propose a single-rod symmetrical hydraulic cylinder for an electrohydrostatic actuator system

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