Online monitoring device for shielding hobbing cutter stress based on fiber grating sensor

Abstract

The invention discloses an online monitoring device for shielding hobbing cutter stress based on a fiber grating sensor. The online monitoring device comprises a shaft end supporting structure for a cutter shaft of a hobbing cutter, a sensor for monitoring hobbing cutter stress, a signal processing module, a wireless communication module, a signal receiving module, an upper computer and a softwaresystem, wherein the shaft end supporting structure for the cutter shaft of the hobbing cutter comprises a C-shaped block and a locking wedge block. According to the online monitoring device disclosedby the invention, elastic deformation of the supporting structure is measured and a final hobbing cutter stress result is obtained through a corresponding monitoring method. The online monitoring device can be used for accurately measuring a hobbing cutter stress condition, can analyze geological conditions of the front side according to the stress result and has a certain evaluation effect on acutter state.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to an on-line force monitoring device for a hob based on a fiber grating sensor. Background technique [0002] During the actual working process, the hob is affected by forces in three directions, based on the contact point between the hob and the rock, including the normal force in the radial direction of the hob, the rolling force in the vertical radial direction, and the force in the axial direction. lateral force. Too much force on the hob is prone to damage to the tool, and too little force reduces the cutting efficiency. At present, there is no perfect monitoring method for the force state of the hob. Hou Zhende of Tianjin University invented the method of online detection of the force of the full-section hard geological roadheader hob. The device uses basic strain gauges for measurement, but its measurement accuracy and life are not high, which cannot meet the cur...

AI Technical Summary

Problems solved by technology

Too much force on the hob is prone to damage to the tool, and too little force reduces the cutting efficiency. At present, there is no perfect monitoring method for the force state of the hob. Hou Zhende of Tianjin University invented the method of online detection of the force of the full-section hard geological roadheader hob. The device uses basic strain gauges for measurement, but its measurement accuracy and life are not high, which cannot meet the current engineering needs

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