A hydraulic system for erecting a rocket launching vehicle with negative load adjustment function and its adjustment method

Abstract

A rocket launching vehicle erecting hydraulic system and adjustment method with a negative load adjustment function, the purpose of which is to safely, quickly and conveniently realize the manual adjustment and withdrawal of the negative load of the hydraulic system under the condition of no power, and limit the withdrawal speed; The hydraulic system includes: a lifting system, a slow-down speed regulating system; the slow-down speed regulating system is installed on the lifting system in parallel through pipelines and pipe heads; the lifting system includes: a fuel tank assembly, a motor oil pump group, a one-way valve, reversing valve, hydraulic retaining element, and actuator; the fuel tank assembly, motor oil pump unit, and actuator form a hydraulic circuit through the pipeline and pipe head; the one-way valve, reversing valve, and hydraulic retaining element are arranged in sequence Between the motor oil pump group and the actuator; the slow down speed regulation system includes: hydraulic branch circuit, stop valve, speed control valve; the hydraulic branch circuit is arranged in parallel on the liquid return pipeline in the hydraulic circuit of the lifting system; the The cut-off valve and the speed regulating valve are sequentially arranged on the hydraulic branch along the liquid return direction.

Description

technical field [0001] The invention relates to the technical field of rocket launch vehicles, in particular to a vertical hydraulic system and an adjustment method of a rocket launch vehicle with a negative load adjustment function. Background technique [0002] In the vertical hydraulic system of the existing rocket launching vehicle, hydraulic pressure is used to maintain the negative load. In the case that the hydraulic system loses power due to an accident, when the oil control port of the hydraulic holding element in the system does not have enough pressure to open, the negative load will be kept at a certain position (such as a hydraulically driven rocket launcher, a crane, etc.) During the lifting process of the vertical arm, the lifting process of the tower crane jacking mechanism, etc., any position under negative load conditions such as accidental stop), if the hydraulic holding element is opened in an abnormal way, it is very likely to cause a negative load stall...

AI Technical Summary

Problems solved by technology

In the case that the hydraulic system loses power due to an accident, when the oil control port of the hydraulic holding element in the system does not have enough pressure to open, the negative load will be kept at a certain position (such as a hydraulically driven rocket launcher, a crane, etc.) Point the vertical arm erecting process, tower crane jacking mechanism jacking process, etc., any position under negative load conditions, such as accidental stop), if the hydraulic holding element is opened in an abnormal way, it is very likely to cause a negative load stall and cause an accident

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