Full power self adaptive shield cutter disc driving electrohydraulic control system

Abstract

The invention discloses a kind of scutate structure tool pan driving electric liquid control system with self-adaptation to the global power. It includes electrical machinery, variable pump, variable jar, three-position and four-way proportionate reversal valve, displacement sensor, inserting valve, two-position and four-way electromagnetic reversal valve, front guide overflowing valve, one-way valve, three-position and four-way elecric liquid reversal valve, motor, and sensor of torque and rotation rate. The scutate structure tool pan driving electric liquid control system uses sensor of torque and rotation rate to real-timely examine the torque and rotation rate of the tool pan, then control the displace of variable device through proper strategy, and further control the discharge capacity of the variable pump, thus form the real-time controllable tool pan driving electric liquid which can work continuously according to the working and loading needs.

Description

Technical field [0001] The invention relates to a fluid pressure actuator, in particular to an electro-hydraulic control system for a global power self-adaptive shield cutter head drive. Background technique [0002] Shield tunneling is a technology-intensive major engineering equipment dedicated to the excavation of underground tunnels. Under the cover of a special-shaped steel cylinder structure such as a circle or a rectangle that can support formation pressure and advance in the formation, it can complete excavation, excavation, tunnel support and other work. Its biggest feature is that the entire tunneling process is completed under the cover of this steel structure called a shield, which can minimize collapse and surface deformation. Compared with the traditional tunneling technology, the shield tunneling method has the advantages of safety, reliability, high degree of mechanization, good working environment, less earthwork, fast progress, and low construction cost, e...

AI Technical Summary

Problems solved by technology

If the system form of valve-controlled motor is adopted, the system power must be designed according to the maximum power required. When encountering under-load conditions, the system efficiency will be low, and a large amount of power will be dissipated in the form of heat, which will cause serious heating of the system.

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