Shield tunneling machine lip-shaped sealing ring abrasion detection method and device and shield tunneling machine

Abstract

The invention provides a shield tunneling machine lip-shaped sealing ring abrasion detection method and device and a shield tunneling machine. The method comprises the steps that multiple sealing ring resistance strain values are obtained; wherein the resistance strain value of the sealing ring is generated by a plurality of resistance strain gauges arranged on the lip-shaped sealing ring of the shield tunneling machine; according to the resistance strain value of the sealing ring, determining the abrasion loss of the corresponding position of each resistance strain gauge by utilizing a preset corresponding relation between the abrasion loss and the strain value; and according to the abrasion loss of the corresponding position of each resistance strain gauge, obtaining an abrasion result of the lip-shaped sealing ring of the shield tunneling machine. The resistance strain gauge is arranged on the lip-shaped sealing ring of the shield tunneling machine, the abrasion condition of the lip-shaped sealing ring of the shield tunneling machine is detected through the collected strain value, the problems that in the prior art, the detection precision is low, the real-time performance is poor, and the machining difficulty is large are solved, the abrasion loss of the rubber ring is accurately and directly measured, and the sealing performance is efficiently prevented from being damaged.

Description

technical field [0001] The invention relates to the technical field of shield tunneling machines, in particular to a method and device for detecting wear of a lip seal ring of a shield tunneling machine and a shield tunneling machine. Background technique [0002] Sealing is one of the key performance indicators for the main drive of the shield machine. The quality of the sealing directly determines whether the shield machine can tunnel. The main drive seal of the shield machine is mainly composed of the lip ring and the runway. Due to the relative movement between the lip ring and the runway, the wear of the lip ring is inevitable, which will cause the damage of the seal and cause the cement, sand, soil and stone to enter the main drive. drive, causing damage to the main bearing and causing the shield machine to strike and stop. How to effectively prevent the damage of the main drive seal is the technical barrier for the development of shield machine at present. [0003] ...

AI Technical Summary

Problems solved by technology

At present, the commonly used sealing state detection method is to indirectly judge the integrity of the seal by measuring the temperature and pressure of the sealed grease chamber. This method cannot obtain the real state of the seal itself in time and accurately, and the information has a lag

The recently emerging methods of online detection of lip ring wear, such as the method of online detection of lip ring wear based on pressure sensors, this method installs a pressure sensor with an elastic seat on the runway. Due to the wear of the lip ring, the lip The pressure of the ring on the runway is also constantly changing, and the wear of the rubber ring can be judged based on this change. This method installs a sensor on the runway. The actual process cannot guarantee whether the sealing is damaged, and it has problems such as high processing difficulty.

[0004] At present, there is no mature method for detecting lip ring wear

Images