US 12,187,332 B2
High-precision positioning system for underground monorail hoist in coal mine and positioning method thereof
Hao Lu, Xuzhou (CN); Zhencai Zhu, Xuzhou (CN); Yidong Zhang, Xuzhou (CN); Yuxing Peng, Xuzhou (CN); Yu Tang, Xuzhou (CN); Hua Chen, Xuzhou (CN); Zaigang Xu, Xuzhou (CN); Mingzhong Wang, Xuzhou (CN); Mai Du, Xuzhou (CN); Hengzhen Hu, Xuzhou (CN); and Fuping Zheng, Xuzhou (CN)
Assigned to CHINA UNIVERSITY OF MINING AND TECHNOLOGY, Xuzhou (CN); and XUZHOU LIREN MONORAIL TRANSPORTATION EQUIPMENT CO., LTD., Xuzhou (CN)
Appl. No. 18/247,874
Filed by CHINA UNIVERSITY OF MINING AND TECHNOLOGY, Xuzhou (CN); and XUZHOU LIREN MONORAIL TRANSPORTATION EQUIPMENT CO., LTD., Xuzhou (CN)
PCT Filed Sep. 30, 2022, PCT No. PCT/CN2022/123325
§ 371(c)(1), (2) Date Apr. 4, 2023,
PCT Pub. No. WO2023/201993, PCT Pub. Date Oct. 26, 2023.
Claims priority of application No. 202210402959.2 (CN), filed on Apr. 18, 2022.
Prior Publication US 2024/0043247 A1, Feb. 8, 2024
Int. Cl. B61L 25/02 (2006.01); B66C 11/06 (2006.01); E21F 13/00 (2006.01); G01C 21/16 (2006.01)
CPC B61L 25/026 (2013.01) [B66C 11/06 (2013.01); E21F 13/00 (2013.01); G01C 21/16 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A high-precision positioning system for an underground monorail hoist in a coal mine, comprising:
a gear-type displacement measuring device and a plurality of coordinate positioning units uniformly distributed on an I-beam track,
wherein the gear-type displacement measuring device includes two gear carriers symmetrically arranged on both sides of the I-beam track, and the two gear carriers are fixedly connected with each other;
each of the gear carriers is provided with a positioning wheel and a plurality of travelling wheels, the travelling wheels are travelling on an upper end surface of a bottom plate of the I-beam track, and the positioning wheel is in engagement transmission with a rack at a lower end of the bottom plate of the I-beam track;
the gear carriers are further provided with an installation bracket and a connecting seat configured to connect the monorail hoist, and the installation bracket is provided with an inertial measuring unit and a single-chip microcomputer that are electrically connected with each other;
the positioning wheel is provided with a rotation angle sensor configured to detect a rotation angle of the positioning wheel, and the rotation angle sensor is electrically connected to the single-chip microcomputer; and
a headstock at each end of the monorail hoist is provided with a respective coordinate updating unit capable of transmitting a signal to a coordinate positioning unit, and the coordinate updating unit is electrically connected to the single-chip microcomputer.