Oil make-up device of pressure compensation hydraulic damper

Abstract

The invention discloses an oil make-up device of a pressure compensation hydraulic damper and aims at providing a device which cannot be affected by environmental factors such as temperature, vibration and impact. According to the proposed technical scheme, the outer side of the blind hole end of an oil cylinder block is provided with a heat safety valve with the radial vertical axis, and the heatsafety valve communicates with an oil cavity; the heat safety valve is internally provided with a heat safety valve spring; a sealing element is vulcanized on a skeleton to realize rubber soft sealing; the sealing surfaces of a compensation piston and an oil make-up box are provided with two n-shaped combined seals; an end over is internally provided with a bearing sleeving a damping spring to provide compensatory pressure required by reciprocating motion of the oil cylinder block for the hydraulic damper; when the damper is in an oil shortage state, the damper spring generates pretighteningforce to force oil to flow to a damping cavity of the damper to provide the oil required for normal operation; when the oil stored by the oil make-up device is insufficient, an oil make-up port of thecompensation piston is connected with an oil nipple, and an oil feeding valve body is turned on under the action of pressure of an external hydraulic source to supplement oil to a compensation device.

Description

technical field [0001] The present invention is a long-life sealing compensator device mainly used in aviation hydraulic dampers, especially oil replenishing devices for hydraulic dampers that work long-life in high, low temperature, vibration and other environments. The examples that can be used include aviation , aerospace, automobile, construction, road, bridge, railway and other industries, mechanical engineering, ground moving vehicles, aircraft control systems, etc. Background technique [0002] The hydraulic damper uses a hydraulic cylinder filled with hydraulic oil to generate a pressure difference between the two chambers of the hydraulic cylinder through the damping control valve and the damping orifice, thereby generating a damping force on the load. When the helicopter hydraulic damper is installed and used, the hydraulic damper often needs to be installed with a constant pressure valve. When the axial speed of the hydraulic damper is too large, the constant pres...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of oil leakage and short service life of seals in the existing damper compensator technology, the task of the present invention is a long-life seal compensator device, providing a long-life seal compensator with explosion-proof, anti-vibration, and shock-resistant environments device to solve the long-life sealing technology in the required use environment, solve the problem that the sealing performance does not meet the use environment, and improve the sealing performance of the wide-band and wide-width differential hydraulic damper during its service life

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