US 12,467,360 B2
Device and method for adjusting tunnel support force
Liping Chen, Zhejiang (CN); Guogang Ying, Zhejiang (CN); Hanhua Zhu, Zhejiang (CN); Jiayuan He, Zhejiang (CN); Dan Chen, Zhejiang (CN); and Yapeng Xing, Zhejiang (CN)
Appl. No. 17/766,177
Filed by Ningbo Langda Engineering Technology Co., Ltd., Zhejiang (CN)
PCT Filed May 8, 2021, PCT No. PCT/CN2021/092408
§ 371(c)(1), (2) Date Apr. 1, 2022,
PCT Pub. No. WO2022/142051, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 202011593500.2 (CN), filed on Dec. 29, 2020.
Prior Publication US 2024/0052744 A1, Feb. 15, 2024
Int. Cl. E21D 11/10 (2006.01); E21D 11/14 (2006.01)
CPC E21D 11/14 (2013.01) [E21D 11/10 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A tunnel supporting force adjusting device, which is arranged on section steel (4) at intervals, comprising:
a fixed component (1), connected with the section steel (4);
a movable supporting component (2), connected with the fixed component (1) and used for connecting with a tunnel trunk (5), wherein the movable supporting component (2), the fixed component (1) and the section steel (4) are fixedly connected with the tunnel trunk (5);
a driving component (3), detachably connected with the fixed component (1) and the movable supporting component (2) respectively to adjust the supporting force of the movable supporting component (2) on the tunnel trunk (5),
wherein the fixed component (1) comprises a limiting connecting piece (11), connected with the section steel (4); casing pipes (12), connected with the limiting connecting piece (11) and slidably connected with the movable supporting component (2); limiting components (13), respectively connected with the casing pipes (12) and the movable supporting component (2) to fix the adjusted movable supporting component (2).