Device for monitoring horizontal extrusion force of roof rock strata and method using the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11859493
APP PUB NO 20210332701A1
SERIAL NO

17269557

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Abstract

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A device includes a pressure measuring segment, a connecting rod, a hydraulic pump, a pressure gauge, a high-pressure oil pipe, a pressure control valve, a tray, a push rod and a connection casing. The pressure measuring segment is on the connecting rod, a front end of the push rod is connected with the connecting rod, the tray is at a rear end of the push rod, the connection casing is connected with the tray. The pressure measuring segment includes a main pipe, a hydraulic bladder, a fixing ring, a barrier sheet, an outer pillow housing and a connection sleeve. Both ends of the hydraulic bladder are sleeved on the main pipe, an oil inlet is in communication with the hydraulic bladder, the outer pillow housing is sleeved on the main pipe, the connection sleeve is wrapped around the outer pillow housing.

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Patent Owner(s)

Patent OwnerAddress
SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY250031 SHENGLI ROAD TIANQIAO DISTRICT SHANDONG JI'NAN 17 JINAN CITY SHANDONG PROVINCE 250031

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Xuepeng Qingdao, CN 2 0
Tan, Yunliang Qingdao, CN 17 16
Yu, Fenghai Qingdao, CN 6 4
Zhao, Wei Qingdao, CN 814 5746
Zhou, Kai Qingdao, CN 170 495

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