US 12,352,169 B2
Hydraulic support with quick response function for coal wall spalling
Lirong Wan, Qingdao (CN); Xiaoqi Ma, Qingdao (CN); Qingliang Zeng, Qingdao (CN); Zhiyuan Sun, Qingdao (CN); Wenqian Xu, Qingdao (CN); Zhaoji Li, Qingdao (CN); Yanpeng Zhu, Qingdao (CN); and Baolong Chen, Qingdao (CN)
Assigned to Shandong University of Science and Technology, Qingdao (CN)
Filed by Shandong University of Science and Technology, Shandong (CN)
Filed on May 16, 2023, as Appl. No. 18/197,894.
Claims priority of application No. 202210851034.6 (CN), filed on Jul. 20, 2022.
Prior Publication US 2024/0026788 A1, Jan. 25, 2024
Int. Cl. E21D 23/03 (2006.01); E21D 23/00 (2006.01); E21D 23/04 (2006.01); E21D 23/16 (2006.01); E21F 17/18 (2006.01)
CPC E21D 23/03 (2013.01) [E21D 23/0047 (2013.01); E21D 23/0069 (2013.01); E21D 23/0427 (2013.01); E21D 23/16 (2013.01); E21F 17/18 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A hydraulic support with a quick response function for coal wall spalling, comprising:
a base, an upright post, a top beam, an extensible canopy, a face guard, and a vibration meter, wherein the vibration meter is mounted on a hydraulic support, and detects a vibration signal of a coal wall in a non-contact mode;
the face guard comprises a primary face guard, a secondary face guard, and a tertiary face guard connected in sequence; one side, close to the coal wall, of the primary face guard is connected to a quick response device;
the quick response device is in signal communication with the vibration meter; and
the quick response device is abutted against the coal wall after receiving the vibration signal of the coal wall and before the secondary face guard and the tertiary face guard attach to the coal wall.