The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 2023
Filed:
Jan. 17, 2022
China University of Mining and Technology, Xuzhou, CN;
Shaoyi Xu, Xuzhou, CN;
Zhencai Zhu, Xuzhou, CN;
Wei Li, Xuzhou, CN;
Wenting Lu, Xuzhou, CN;
Gang Shen, Xuzhou, CN;
Songyong Liu, Xuzhou, CN;
Fangfang Xing, Xuzhou, CN;
Hongxiang Jiang, Xuzhou, CN;
Lei Si, Xuzhou, CN;
CHINA UNIVERSITY OF MINING AND TECHNOLOGY, Xuzhou, CN;
Abstract
An apparatus includes a current excitation source, a roadheader telescopic protection cylinder, an electric rotating apparatus, auxiliary cutting teeth, a cutting head entity, a transmission shaft, an optical fiber ring protective housing, an optical fiber ring, an optical fiber current sensor control unit and a recovery electrode. The apparatus transmits an auxiliary current Iand a monitoring current Ito a coal seam. The auxiliary current Iand the monitoring current Iare homologous currents that are incompatible, and the auxiliary current Isqueezes the monitoring current I, so the monitoring current Imonitors the environment of the coal seam. The monitoring current Iflows to the coal seam as, and a return current Iflows through the transmission shaft and a roadheader expansion part. The optical fiber ring measures the return current I, when the roadheader is heading forward and encounters abnormal geological bodies.