Level instrument and method for surveying mining subsidence zone in coal mining area

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12044531
SERIAL NO

18633522

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Abstract

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A level instrument for surveying a mining subsidence zone in a coal mining area includes a bottom plate, a leveling mechanism, a lifting mechanism, and a level instrument body, where the leveling mechanism is provided on the bottom plate, the lifting mechanism is provided on the leveling mechanism, and the level instrument body is provided on the lifting mechanism. A surveying method using the level instrument is further provided. The level instrument is placed at a surveying location through the bottom plate, a levelness of the level instrument body is directly adjusted through the leveling mechanism below the level instrument body, and a height of the level instrument body is directly adjusted through the lifting mechanism. In this way, the operation process of the level instrument is simplified, and the overall surveying efficiency is improved.

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Patent Owner(s)

Patent OwnerAddress
HUAINAN MINING (GROUP) CO LTD232001 ANHUI PROVINCE TIANJIA'AN DISTRICT MOUNTAIN IN HUAINAN CITY HUAINAN CITY ANHUI PROVINCE 232001
PING AN COAL MINING ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO LTDBUILDING 6 WISDOM VALLEY HI-TECH ZONE ANHUI HUAINAN 232001

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
An, Shikai Huainan, CN 3 0
Cheng, Haiyan Huainan, CN 3 0
Guo, Hongxing Huainan, CN 11 29
Li, Hao Huainan, CN 560 4472
Li, Yanqing Huainan, CN 15 41
Liao, Qingfa Huainan, CN 3 0
Miao, Wei Huainan, CN 26 131
Xu, Yanfei Huainan, CN 15 117
Xue, Bo Huainan, CN 4 3
Zhao, Derong Huainan, CN 2 0

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