US 12,135,110 B2
Large-dip-angle self-leveling device
Ji Chen, Lanzhou (CN); Youqian Liu, Lanzhou (CN); Haiming Dang, Lanzhou (CN); Jiexuan Kang, Lanzhou (CN); Shouhong Zhang, Lanzhou (CN); Jinchang Wang, Lanzhou (CN); Guilong Wu, Lanzhou (CN); Tianchun Dong, Lanzhou (CN); Zhiwei Wang, Lanzhou (CN); and Yaojun Zhao, Lanzhou (CN)
Assigned to Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou (CN)
Filed by Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou (CN)
Filed on Apr. 4, 2022, as Appl. No. 17/712,843.
Claims priority of application No. 202110489408.X (CN), filed on May 6, 2021.
Prior Publication US 2022/0356984 A1, Nov. 10, 2022
Int. Cl. G01C 15/12 (2006.01); F16M 11/22 (2006.01); G01C 9/26 (2006.01)
CPC F16M 11/22 (2013.01) [G01C 9/26 (2013.01); G01C 15/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A large-dip-angle self-leveling device, comprising a mounting base platform arranged on a mounting stand column and a support cylinder connected with the mounting base platform;
a leveling plate is arranged at atop of the mounting base platform, and the leveling plate is provided with a leveling platform for mounting instruments;
a spirit bubble indicator and a control circuit board are arranged on the leveling platform;
a connecting rod of a balance weight is arranged in the support cylinder, one end of the connecting rod of the balance weight is connected with the leveling platform, and an other end of the connecting rod of the balance weight is connected with the balance weight;
a four-core cable penetrates through the connecting rod of the balance weight and the balance weight;
observation windows are symmetrically arranged at a lower part of the support cylinder;
a melting pool is arranged at bottom in the support cylinder, dedicated hot melt adhesive is contained in the melting pool;
a heating pipe is inserted into the dedicated hot melt adhesive, and the heating pipe is connected with the balance weight through a heat insulation sleeve made of epoxy resin; and
one end of the four-core cable is connected with the control circuit board, and an other end of the four-core cable is connected with the heating pipe.