Compound driving device of TBM cutting disc motor hydraulic motor

Abstract

The invention discloses a compound driving device of a hydraulic motor of a TBM (tunnel boring machine) cutting disc motor. The compound driving device comprises a big gear ring and a variable frequency motor driving mechanism, wherein the variable frequency motor driving mechanism comprises a first pinion, a first speed reducer and a variable frequency motor; the first pinion and the big gear ring are meshed; an output shaft of the first speed reducer and the first pinion are fixedly connected; an input shaft of the first speed reducer and an output shaft of the variable frequency motor are connected; in addition, the compound driving device also comprises a hydraulic motor driving mechanism, wherein the hydraulic motor driving mechanism comprises a second pinion, a second speed reducer, a viscosity clutch and a hydraulic motor; the second pinion and the big gear ring are meshed; an output shaft of the second speed reducer and the second pinion are fixedly connected; an input shaft of the second speed reducer and an output shaft of the viscosity clutch are connected; and an input shaft of the viscosity clutch and an output shaft of the hydraulic motor are connected. By utilizing the compound driving device, geological adaptability of a TBM cutting disc driving system and trouble-out ability of the TBM are obviously improved, so that driving characteristics of the cutting disc and geological characteristics of rock are matched, and the use ratio of the installed power is improved.

Description

technical field [0001] The invention relates to an electro-hydraulic compound drive technology, in particular to a drive device for a cutter head system of a full-face rock tunnel boring machine. Background technique [0002] The speed and torque characteristics of the full-face rock tunnel boring machine (hereinafter referred to as "TBM") under the actual tunneling conditions are as follows: if the TBM encounters soft soil during the tunneling process, under a small propulsion force, the cutterhead per revolution The axial propulsion of one revolution is relatively large. At this time, the actual load torque of the TBM is relatively large, and low-speed and high-torque excavation can be adopted. However, when encountering hard rock geology, even if the propulsion force is large, the cutterhead per revolution The axial penetration is still small, and the actual load torque is small. At this time, the rotating speed of the cutter head can be increased to realize high-spee...

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Problems solved by technology

However, in high-speed excavation, the torque of the motor is very small relative to the escape torque, thus causing a waste of installed power of the motor

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