Combined type thread self-locking hydraulic redundant steel supporting shaft force compensation system

Abstract

The invention relates to the technical field of hydraulic power equipment, in particular to a combined type thread self-locking hydraulic redundant steel supporting shaft force compensation system. The technical problem that an existing system is low in safety and large in occupied space is solved. The system comprises at least one power output unit. Each power output unit comprises an oil tank, a hydraulic pump, a redundant valve, at least one thread self-locking oil cylinder and at least one oil cylinder driving valve, and the hydraulic pumps provide power for the thread self-locking oil cylinders through the oil cylinder driving valves. The power output units are connected through the redundant valves. The thread self-locking oil cylinders comprise cylinder barrels, main pistons arranged in the cylinder barrels and auxiliary pistons arranged in inner cavities of the main pistons, external threads are formed in the right circumferential faces of the main pistons, a driving motor and an annular gear are arranged on each cylinder barrel, power output shafts of the driving motors are meshed with the annular gears, and the annular gears are meshed with the external threads on the right portions of the main pistons through internal threads of inner rings. The system is high in safety and small in occupied space.

Description

technical field [0001] The invention relates to hydraulic power equipment technology, in particular to a technology of a composite thread self-locking hydraulic redundant steel support axial force compensation system. Background technique [0002] The hydraulic steel support system is a hydraulic power output system that uses hydraulic cylinders to output power. The existing hydraulic steel support systems mainly have the following two structural forms: 1) All hydraulic cylinders in the system are powered by the same hydraulic pump. The safety of the structural form is poor. Once there is a problem with the hydraulic pump, the entire system will be paralyzed, and the safe operation of the system cannot be guaranteed; 2) The system is equipped with multiple hydraulic pumps, and each hydraulic cylinder in the system is divided into multiple groups. The pump provides power for one group of hydraulic cylinders. If a hydraulic pump fails, it will only affect the work of one group...

AI Technical Summary

Problems solved by technology

However, this method of using a hydraulic lock to lock the hydraulic cylinder has high requirements on the accuracy of the hydraulic valve, and there is internal interference in the spool of the hydraulic valve, which makes it impossible to achieve absolute locking of the hydraulic cylinder, and has the disadvantage of poor locking reliability. will affect the safe operation of the system

The single output force of existing hydraulic cylinders is also relatively low. In some working conditions that require high output force (such as civil foundation pit construction), multiple hydraulic cylinders are often required to cooperate with each other to output power at the same time. Therefore, the existing hydraulic steel The number of hydraulic cylinders in the support system is relatively large, and the system occupies a large space

Images