Wireless Sensor Cutterhead Working Status Monitoring System
YNT-200 Cutterhead Working Status Monitoring System for Shield TBM Tunnelling is able to monitor the working status of the cutterhead in real time through online monitoring device of disc cutter wear. The system consists of Integration Cutter Sensors units, terminal data acquisition unit, hub data acquisition unit and data processing and display unit.
Description
During the shield TBM tunnelling, the working status of the cutterhead is difficult to be determined because the pressured chamber is located behind the cutterhead. Our YNT-200 system is capble of monitor the working status of the cutterhead and predict the cutter wear in real time. The system consists of The system consists of Integration Cutter Sensors units, terminal data acquisition unit, hub data acquisition unit and data processing and display unit. The cutter wear, cutter rotation speed and cutterhead temperature can be monitored and transmitted to the system software through the central port by cable and wireless, is a Smart Disc Cutter Monitoring System in tunneling. The system software can simultaneously display the TBM operating parameters and cutterhead working status parameters, Disc Cutter Wear Status Perception, predict the cutter life and present early warning of abnormal working status. The system has been successfully applied in a shield tunnelling project. Based on the analysis of the monitoring data, it was found that the normal cutter wear mainly depended on the rock abrasiveness and cutter rotation distance. The difference in cutter wear rate in the different ground was more than 3 times. The relative sliding between the cutter and the tunnel face was widespread. The sliding distance in low-abrasive formations exceeded 1/3 of the cutter track length. Under the normal tunneling conditions, the cutterhead temperature was lower than 50°. The successful application shows that this system can work stably in long term under harsh work environment and provide guidance for shield TBM tunnelling. Technical Datasheet Transmission distance Flooding single node transmission distance >= 2 meters (can be extended by multi-level relay transmission distance to accommodate large diameter cutter) wireless transmission distance -40~+120℃ Rotation Speed 0~25mm Endurance Max. 100 can be supported Ambient temperature 25~+85℃ YNT-200 Cutterhead Working Status Monitoring System for Shield TBM Tunnelling
System Composition:
Advantages:
Technical feature
Metal frame structure shelter (no earth burial, flooding) transmission distance of 30 meters or more
500 meters
Measurement Range
Cutter Temperature
0~500rpm
Disc cutter wear range
120 days (5h sampling cycle)
Number of wireless network nodes