Synchronous monitoring device and method for radial and axial vibration of shearer drum

US10768379B2 · kind B2 · utility

Assignees

• China University of Mining and Technology · CN
• XUZHOU ZHONGMINE TRANSMISSION TRACK TECHNOLOGY CO., LTD · CN

Inventors

• Shaoyi Xu · Beijing, CN
• Wei Li · 安丰镇, CN
• Fangfang Xing · 安丰镇, CN
• Yuqiao Wang · Xuzhou, CN
• Xuefeng YANG · Beijing, CN
• Mengbao Fan · Xuzhou, CN
• Ruilin Wang · Beijing, CN
• Xianghui Wang · Lo Wu, CN
• En Lu · Nanhu, CN
• Jinyong Ju · Xuzhou, CN
• Lianchao Sheng · Xuzhou, CN

Key dates

• Filing date: Jun 25, 2018
• Grant date: Sep 8, 2020
• Expiry date: Jul 6, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/262
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A synchronous monitoring device and a method for radial and axial vibration of a shearer drum. The monitoring device includes a laser, a first optical fiber coupler, an optical isolator, a second optical fiber coupler, a third optical fiber coupler, an optical fiber collimator, a first photodetector, a second photodetector, a first signal processing module, and a second signal processing module which are disposed on a shearer ranging arm, as well as a reflective coating disposed on a shearer drum. By measuring a phase difference between original light and reflected light, axial vibration of the shearer drum is monitored, and by measuring an intensity difference between original light and reflected light, radial vibration of the shearer drum is monitored.