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:
Nov. 30, 2021
Filed:
Oct. 16, 2020
Liaoning University, Shenyang, CN;
Beijing Chengtian Hengye Coal Mine Equipment Co. Ltd, Beijing, CN;
Yishan Pan, Shenyang, CN;
Hongying Wang, Beijing, CN;
Lianpeng Dai, Beijing, CN;
Aiwen Wang, Beijing, CN;
Zhicai Chen, Beijing, CN;
Yonghui Xiao, Beijing, CN;
LIAONING UNIVERSITY, Shenyang, CN;
BEIJING CHENGTIAN HENGYE COAL MINE EQUIPMENT CO. LTD, Beijing, CN;
Abstract
The present invention discloses a self-anchored opposite-pulling anti-impact anchor cable for sectional coal pillars and a using method thereof. The anchor cable includes a steel strand (), with an energy-absorbing and yielding terminal () and a stressed expansion-cracking terminal () respectively fixed to two ends of the steel strand, a bushing () sleeved outside the steel strand, a first lock () provided at one end of the steel strand and a second lock () provided at the other end of the steel strand; the stressed expansion-cracking terminal includes a self-anchored bushing () with a plurality of pre-splitting lines () arranged in the wall of the self-anchored bushing. Under stress, the wall of the self-anchored bushing cracks along the pre-splitting lines and bends and expands, so that it abuts against and is self-anchored to the edge of a sectional coal pillar at the outer side.