Detection system for normal-pressure cutter replacement of shield tunneling machine

Abstract

The invention provides a detection system for normal-pressure cutter replacement of a shield tunneling machine. The detection system comprises a temperature sensor, a rotation sensor, a stress sensorand a wear detection hydraulic sensor and is used for monitoring the state of a hob cutter of the shield tunneling machine in real time, wherein the temperature sensor is used for indirectly judging whether abnormal phenomena such as non-uniform wear occur to the hob; the rotation sensor is used for judging whether the states such as chuck clamping and eccentric wear occur to the hob; the stress sensor is used for judging whether a bearing of the hob is worn or a cutter ring is cracked; and the wear detection hydraulic sensor is used for detecting whether the wear of the cutter reaches a wearcritical value. According to the detection system, based on the hob wear mechanism, the temperature sensor, the rotation sensor, the stress sensor and the wear detection hydraulic sensor are combinedand adopted to monitor the whole states such as the temperature, the rotation, the stress and the wear of the hob cutter in real time, and a visual interface is used for displaying relevant state information to help constructors and drivers to judge whether the cutter is replaced.

Description

technical field [0001] The invention relates to a real-time detection system for a tool of a shield tunneling machine, in particular to a detection system for a normal pressure tool change tool of a shield tunneling machine. Background technique [0002] Full-face tunneling machines are easy to wear when digging in complex geological strata such as soft and hard strata above water-rich sand and pebbles. In particular, it is very difficult to monitor the excavation status of hobs in composite strata. Once worn out, failure to monitor and replace them in time will bring huge risks to excavation construction. At present, common hob wear detection methods include oil liquid type and resistive type, which can only detect the critical point of hob tool wear, but fail to monitor hob partial wear, hob chuck, cutter ring stress breakage, and non-uniform wear in real time. and other abnormal wear states, and the accuracy of its detection is limited by factors such as the geological e...

AI Technical Summary

Problems solved by technology

[0003] After retrieval, CN108387261A discloses a wear detection device inside the box, which cannot accurately reflect the normal wear condition of the cutter, and the resistance sensor has poor anti-interference performance; it is also unable to detect the impact of impact on the cutter ring and cutter shaft; the temperature sensor is set In the box, the measurement point is only the blade part, it is difficult to accurately display the impact of wear on the cutter shaft tool, and it is impossible to determine whether non-uniform wear occurs

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