Cutterhead frequency conversion control cabinet armature torque get-out-of-trap system and method for shield tunneling machine

Abstract

The invention discloses a cutterhead get-out-of-trap method for a shield tunneling machine. By limitation of a frequency converter torque and setting of the get-out-of-trap time, a frequency conversion system can keep a certain torque value for certain time in a cutterhead locking process, so that the get-out-of-trap success rate is greatly increased. The method comprises the following steps: S1, setting an amplitude limiting value of a cutterhead torque, amplitude limiting time and stop time; S2, judging whether the speed of a cutterhead reaches an instructed speed or not; S3, controlling a cutterhead motor to accelerate the cutterhead; S4, judging whether the cutterhead torque reaches the amplitude limiting value or not; S5, limiting the cutterhead torque to stabilize the cutterhead torque at the amplitude limiting value for the amplitude limiting time; S6, judging whether the cutterhead torque is reduced to the amplitude limiting value or not; S7, stopping the cutterhead motor for the set stop time, and then starting the cutterhead motor to anticlockwise rotate the cutterhead motor. The invention further discloses a cutterhead frequency conversion control cabinet armature torque get-out-of-trap system for a shield tunneling machine to realize the get-out-of-trap method.

Description

technical field [0001] The invention relates to an electric drive torque release system and method for a cutterhead frequency conversion control cabinet of a shield machine. Background technique [0002] With the development of urban construction in our country, there are more and more underground projects such as underground rail transit and cross-river tunnels, and the shield tunneling distance of tunnels is also getting longer and longer. The shield method is a fully mechanized construction method for modern tunnel construction. The main mechanical equipment used is the shield machine, which cuts soil and crushes gravel through knives during tunnel excavation. [0003] The Chinese invention patent with the patent number CN201110207097.X provides a method for the shield machine to get out of trouble in the weathering tank and repair the cutterhead, which is characterized in that it includes the following steps: Step 1. Grouting and consolidation of the collapsed body. (1)...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an electric drive torque release system and method for a cutter head frequency conversion control cabinet of a shield machine to solve the problems existing in the prior art when the cutter head of a shield machine is stuck due to an accident during the advancing process. Unable to rotate, causing the system to detect an over-torque alarm and directly stop the output

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