Shield tunnelling machine series-connection connection double-piston-rod symmetrical hydraulic oil cylinder propulsion system

Abstract

The invention provides a shield tunnelling machine series-connection connection double-piston-rod symmetrical hydraulic oil cylinder propulsion system. The shield tunnelling machine series-connectionconnection double-piston-rod symmetrical hydraulic oil cylinder propulsion system mainly comprises a servo motor, a metering pump, a safety valve, an oil replenishing pump and a plurality of zonal propulsion system bodies composed of double-piston-rod symmetrical hydraulic oil cylinders of same structures, wherein an output shaft of the servo motor is in rigid connection with an input shaft of themetering pump, the left end oil mouth of the metering pump is connected with the left end oil mouth of the first hydraulic oil cylinder and an oil inlet of the safety valve through oil pipes correspondingly, the right end oil mouth of the metering pump is connected with the right end oil mouth of the second hydraulic oil cylinder through one oil pipe, and the right end oil mouth of the first hydraulic oil cylinder is connected with the left end oil mouth of the second hydraulic oil cylinder through one oil pipe. According to the shield tunnelling machine series-connection connection double-piston-rod symmetrical hydraulic oil cylinder propulsion system, synchronous control of all the zonal propulsion hydraulic oil cylinders is easy to realize, a pump-control-cylinder direct drive type volume speed regulation system is adopted, energy loss is low, energy is significantly saved, the propulsion system bodies share one same oil source, and the shield tunnelling machine series-connection connection double-piston-rod symmetrical hydraulic oil cylinder propulsion system is simple in structure and convenient to install and maintain.

Description

technical field [0001] The invention relates to a hydraulic propulsion system of a shield tunneling machine, which belongs to the technical field of hydraulic transmission. Background technique [0002] The shield tunneling machine is a kind of integrated mechanical, electrical, hydraulic and other technologies dedicated to the construction of underground tunnels. It is a typical multi-system complex electromechanical and hydraulic integrated equipment, which can realize the mechanization and automation of tunnel excavation. The hydraulic propulsion system of the shield tunneling machine provides the driving force for the advancement of the shield, which is usually completed by a certain number of hydraulic cylinders distributed along the circumferential direction of the shield. Individual control is required to meet the requirements of curve excavation, deflection correction, and individual retreat during segment assembly. At the same time, the pressure and flow of the prop...

AI Technical Summary

Problems solved by technology

The existing propulsion hydraulic system adopts the valve control method, which not only has a large throttling loss, wastes energy, affects the life of the equipment, but also deteriorates the construction environment and brings many unfavorable factors

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