Rocket launching vehicle erecting hydraulic system with negative load adjusting function and adjusting method

Abstract

The invention relates to a rocket launching vehicle erecting hydraulic system with a negative load adjusting function and an adjusting method, and aims to safely, quickly and conveniently realize the negative load manual control and withdrawing of the hydraulic system under an unpowered condition and limit the withdrawing speed. The hydraulic system comprises a lifting system and a slow descending speed regulating system; the slow descending speed regulating system is mounted on the lifting system in parallel through a pipeline and a pipe head; the lifting system comprises an oil tank assembly, a motor oil pump set, a one-way valve, a reversing valve, a hydraulic maintaining element and an actuator. The oil tank assembly, the motor oil pump set, the actuator and the pipe head form a hydraulic loop through a pipeline. The one-way valve, the reversing valve and the hydraulic maintaining element are sequentially arranged between the motor oil pump set and the actuator. The slow descending speed regulating system comprises a hydraulic branch, a stop valve and a speed regulation valve. The hydraulic branch is arranged on a liquid return pipeline in a hydraulic loop of the lifting system in parallel; and the stop valve and the speed regulating valve are sequentially arranged on the hydraulic branch in 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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