Tunnel boring machine (TBM) cutter head pressurizing freeing hydraulic control system

Abstract

The invention discloses a tunnel boring machine (TBM) cutter head pressurizing freeing hydraulic control system. The TBM cutter head pressurizing freeing hydraulic control system comprises a control assembly, a cutter head driving assembly, a main control oil circuit and a pressurizing control oil circuit. The control assembly comprises an industrial personal computer, a PLC control unit and an information feedback unit. The cutter head driving assembly comprises a hydraulic motor correspondingly connected with a TBM cutter head, a torque sensor and a reducer. The main control oil circuit comprises a main control frequency converter, a main control oil circuit motor and a main variable stroke pump, wherein the main control frequency converter, the main control oil circuit motor and the main variable stroke pump are connected in sequence. The pressurizing control oil circuit comprises a pressurizing frequency converter, a pressurizing oil circuit motor and a pressurizing variable stroke pump, wherein the pressurizing frequency converter, the pressurizing oil circuit motor and the pressurizing variable stroke pump are connected in sequence. According to the TBM cutter head pressurizing free hydraulic control system, system closed-loop feedback control is achieved, the working state of the cutter head fits in control of the main variable stroke pump and the pressurizing variable stroke pump and displacement of the hydraulic motor, when the cutter head is clamped or has a clamped trend, the pressurizing variable stroke pump is started quickly, the main variable stroke pump and the pressurizing variable stroke pump work simultaneously, the displacement of the motor is increased, and the cutter head is freed through instant high torque.

Description

technical field [0001] The invention relates to the technical field of control systems for tunnel construction equipment, in particular to a hydraulic pressure control system for pressurization and escape of a TBM cutterhead. Background technique [0002] With the great development of tunnels and underground space engineering, TBM construction method is being used more and more in urban subway tunnels, water diversion and water supply tunnels, river and sea tunnels, power telecommunications and gas supply because of its high construction efficiency and construction safety. Used in other projects. As the key system of TBM power, the cutter head drive system provides torque for the cutter head to break rock. The classic cutter head drive methods mainly include hydraulic drive and variable frequency motor drive. However, in the case of severe construction impact loads, hydraulic drives are used relatively more due to the stability advantages of the entire hydraulic system. Du...

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the problem of the TBM cutter head getting stuck and getting out of the trap when driving under complex working conditions in the prior art and the problem of the existing TBM cutter head pressurized and released hydraulic circuit transformation problem, and provides a TBM cutter head pressurized and released Hydraulic control system

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