Patent ID: 11859493
Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E  G

Claim 0:
1. A device for monitoring a horizontal extrusion force of roof rock strata, comprising: 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, wherein the connecting rod is connected with the pressure measuring segment, a front end of the push rod is connected with the connecting rod, a rear end of the push rod passes through the tray, and the connection casing is connected with the tray; the high-pressure oil pipe is connected with the hydraulic pump and protrudes to the pressure measuring segment through inner cavities of the push rod and the connection rod;
the pressure measuring segment comprises 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 by the fixing rings, and an oil inlet is disposed on the main pipe to be in communication with the hydraulic bladder; the outer pillow housing is sleeved on the main pipe, the connection sleeve is wrapped around an outer side of the outer pillow housing, and the barrier sheet is disposed between the fixing ring and the outer pillow housing.