CN-115900540-B - Monitoring system for shield machine hob abrasion

Abstract

The invention provides a monitoring system for shield tunneling machine hob abrasion, which relates to the technical field of tunneling and comprises a detection module, an acquisition module and a control module, wherein the detection module is provided with a magneto-sensitive element, a first excitation magnet and a second excitation magnet which are sequentially arranged at intervals, the magnetic fields of the first excitation magnet and the second excitation magnet are overlapped, the magneto-sensitive element detects the change of the magnetic field between the first excitation magnet and the second excitation magnet and outputs a detection signal, and the acquisition module is electrically connected with the magneto-sensitive element and receives the detection signal of the magneto-sensitive element. The shield machine hob abrasion monitoring system provided by the invention increases the detection range, and improves the reliability and consistency of detection.

Inventors

• JIA LIANHUI
• LU YATI
• HUANG SHIGUANG
• ZHANG ZHIGUO
• ZHENG YONGGUANG
• SUN ZHIHONG
• WEI XIAOLONG
• HUANG ZHEN
• ZHAO CHUNYANG
• WANG ZHEN
• ZHOU SHULIANG

Assignees

• 中铁工程装备集团有限公司

Dates

Publication Date

20260512

Application Date

20221009

Claims (9)

1. 1. A monitoring system for shield tunneling machine hob wear, the monitoring system comprising: The detection module is provided with a magneto-sensitive element, a first excitation magnet and a second excitation magnet which are sequentially arranged at intervals, wherein the magnetic fields of the first excitation magnet and the second excitation magnet are superposed, and the magneto-sensitive element detects the change of the magnetic fields among the first excitation magnet, the second excitation magnet and the hob and outputs detection signals; the acquisition module is electrically connected with the magnetic sensor and receives the detection signal of the magnetic sensor; Magnet pitch adjustment module, magnet pitch adjustment module includes: the second excitation magnet bracket is used for installing the second excitation magnet; The first excitation magnet support is used for mounting the first excitation magnet and is mounted on the second excitation magnet support; And the magnetic sensor bracket is used for installing the magnetic sensor and is arranged on the second excitation magnet bracket.
2. 2. The system for monitoring the wear of the hob of the shield machine according to claim 1, further comprising a data processing module, wherein the data processing module is electrically connected with the acquisition module and is used for analyzing and displaying detection signals transmitted by the acquisition module.
3. 3. The system for monitoring the abrasion of the hob of the shield machine according to claim 2, wherein a detection signal-abrasion loss curve is built in the data processing module, and the data processing module determines the abrasion loss of the cutting edge of the hob according to the detection signal-abrasion loss curve.
4. 4. The system for monitoring wear of a hob of a shield machine according to claim 1, wherein the magneto-sensitive element, the first excitation magnet and the second excitation magnet are arranged in sequence along a radial direction of the hob and in a direction opposite to a cutting edge.
5. 5. The shield machine hob abrasion monitoring system according to claim 4, wherein the outer diameter of the first excitation magnet is smaller than the outer diameter of the second excitation magnet.
6. 6. The system for monitoring the wear of the hob of the shield machine according to claim 1, wherein the detection signal output by the acquisition module is a voltage signal.
7. 7. The shield machine hob abrasion monitoring system according to claim 1, wherein the first excitation magnet bracket is mounted on the second excitation magnet bracket by a spacing adjustment mechanism, the spacing adjustment mechanism being capable of adjusting a spacing between the first excitation magnet and the second excitation magnet.
8. 8. The system for monitoring wear of a hob of a shield machine according to claim 1, further comprising a protection module, wherein the magnet spacing adjustment module is fixed in the protection module, and wherein the protection module is fixedly mounted on a cutter barrel end cover of the shield machine.
9. 9. The system for monitoring the wear of the hob of the shield machine according to claim 1, wherein the detection signal of the magneto-sensitive element is transmitted to the acquisition module through an end cover in a wired or wireless mode.

Description

Monitoring system for shield machine hob abrasion Technical Field The invention relates to the technical field of tunnel tunneling, in particular to a monitoring system for shield machine hob abrasion. Background The shield tunneling machine is a special engineering machine for tunneling, the cutter is the part which is most easy to wear and lose efficacy in the tunneling process of the shield tunneling machine, if the worn cutter is not detected in real time and replaced in time, the cutter is seriously worn, so that the tunneling of the shield tunneling machine is difficult, the construction efficiency is affected, the cutter head is seriously worn, the cutter head is required to be excavated and replaced by a vertical shaft, the cutter head is manually pressed into a bin, the physical health is greatly endangered, and the process has great economic and safety risks. In the prior art, an eddy current sensor is generally used for detecting the abrasion loss. However, the current vortex sensor adopted at present has a small measuring range, and is generally only about 20 mm. Because of the limitation of the range, the installation form of the device on the tool rest is limited, and the device can only protrude from the tool rest and be installed close to the hob, so that the device is easily damaged by dregs. In addition, the power consumption of the eddy current sensor is large. In addition, the consistency of the existing hob abrasion loss detection device is poor, the detection sensitivity is low, and the hob abrasion loss detection device is troublesome in use because the hob abrasion loss detection device is calibrated one by one. In view of this, the inventor designs a monitoring system for shield machine hob abrasion through trial and error according to production design experience in the field and related fields for many years, so as to solve the problems in the prior art. Disclosure of Invention The invention aims to provide a monitoring system for shield machine hob abrasion, which increases the detection range and improves the detection reliability and consistency. In order to achieve the above purpose, the invention provides a monitoring system for shield machine hob abrasion, wherein the monitoring system comprises: The detection module is provided with a magneto-sensitive element, a first excitation magnet and a second excitation magnet which are sequentially arranged at intervals, wherein the magnetic fields of the first excitation magnet and the second excitation magnet are superposed, and the magneto-sensitive element detects the change of the magnetic fields among the first excitation magnet, the second excitation magnet and the hob and outputs detection signals; the acquisition module is electrically connected with the magnetic sensor and receives the detection signal of the magnetic sensor. The monitoring system for shield machine hob abrasion comprises the data processing module, wherein the data processing module is electrically connected with the acquisition module and analyzes and displays detection signals transmitted by the acquisition module. The shield machine hob abrasion monitoring system is characterized in that a detection signal-abrasion loss curve is arranged in the data processing module, and the data processing module determines the abrasion loss of the cutting edge of the hob according to the detection signal-abrasion loss curve. The shield machine hob abrasion monitoring system comprises the magnetic sensor, the first excitation magnet and the second excitation magnet, wherein the magnetic sensor, the first excitation magnet and the second excitation magnet are sequentially arranged along the radial direction of the hob and the direction opposite to the cutting edge. The shield machine hob abrasion monitoring system comprises a first excitation magnet, a second excitation magnet, a first excitation magnet and a second excitation magnet. The shield machine hob abrasion monitoring system comprises the acquisition module, wherein the detection signal output by the acquisition module is a voltage signal. The monitoring system for shield tunneling machine hob abrasion, wherein the monitoring system further comprises a magnet spacing adjusting module, and the magnet spacing adjusting module comprises: the second excitation magnet bracket is used for installing the second excitation magnet; The first excitation magnet support is used for mounting the first excitation magnet and is mounted on the second excitation magnet support; And the magnetic sensor bracket is used for installing the magnetic sensor and is arranged on the second excitation magnet bracket. The shield machine hob abrasion monitoring system comprises a first excitation magnet support, a second excitation magnet support, a distance adjusting mechanism and a shield machine hob abrasion monitoring system, wherein the first excitation magnet support is arranged on the second excitation magnet support through the d