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A mine-used visual fiber grating large-range bolt cable stress monitoring sensor

A fiber grating and stress monitoring technology, which is used in the measurement of force, the measurement of force by measuring the change of optical properties of materials when they are stressed, instruments, etc. Such products are susceptible to moisture and other problems

Active Publication Date: 2021-09-10
山东光安智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most mine pressure detection devices on the market are electronic products, and the transmission methods are mostly wireless and bus. The detection devices are easily interfered by large coal mining equipment, the data transmission stability is poor, and the transmission distance is short. When detecting large areas, sensors and substations The on-site power supply is complicated, especially in the humid underground environment, and electronic products are easily affected by moisture, resulting in system instability; the existing fiber grating sensors have complicated on-site recovery and repeated installation processes, and do not have the on-site display function required by coal safety

Method used

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  • A mine-used visual fiber grating large-range bolt cable stress monitoring sensor
  • A mine-used visual fiber grating large-range bolt cable stress monitoring sensor
  • A mine-used visual fiber grating large-range bolt cable stress monitoring sensor

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Embodiment 1

[0052] see Figure 1-Figure 4 , Figure 1-Figure 4 It is a structural schematic diagram of a mine-used visual fiber grating large-range bolt cable stress monitoring sensor in this embodiment, which specifically includes a bolt cable stress sensing device, a primary transmission system 1, a secondary transmission system 2, a display device and a remote monitoring system.

[0053] The anchor cable stress sensing device is used to sense the pressure transmitted by the anchor rod, and specifically includes the first housing 5, the first piston shaft 10 and the upper cover 9, and the inner cavity of the first housing 5 is filled with lubricating oil , the top of the first housing 5 is provided with an upper cover 9, the first piston shaft 10 is assembled in the cavity of the first housing 5, the first housing 5, the first piston shaft 10 and the upper cover 9 An anchor rod 3 is worn at the middle position, and an anchor nut 4 is provided at the contact position between the anchor...

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Abstract

A mine-used visual fiber grating large-range bolt cable stress monitoring sensor includes a bolt cable stress sensing device, a primary transmission system, a secondary transmission system, a display device and a remote monitoring system, and the bolt cable stress sensing device receives The stress transmitted by the anchor cable is transmitted to the display device through the primary transmission system and the secondary transmission system. The display device includes an instrument panel and a second housing, and the second housing is provided with a push rod and a transmission The push rod is connected to the secondary transmission system, one end of the transmission part is connected to the push rod, and the other end is connected to the instrument panel through a connecting shaft. The remote monitoring system includes a host and a cantilever beam, and the cantilever beam is arranged There is an optical fiber grating, the top of the cantilever beam is in contact with a push rod, and the displacement change of the push rod can drive the top of the cantilever beam to bend, and the optical fiber grating is connected to a remote host. The sensor has the advantages of convenient on-site installation, on-site visibility, passive monitoring, high measurement accuracy and large measuring range.

Description

technical field [0001] The invention relates to the technical field of coal mine safety monitoring, in particular to a mine-used visualized optical fiber grating large-range bolt cable stress monitoring sensor. Background technique [0002] At present, most of the mine pressure detection devices on the market are electronic products, and the transmission methods are mostly wireless and bus. The detection devices are easily interfered by large coal mining equipment, the data transmission stability is poor, and the transmission distance is short. When detecting large areas, sensors and substations The on-site power supply is complicated, especially in the humid underground environment, and electronic products are easily affected by moisture, resulting in system instability; the existing fiber grating sensors have complicated on-site recycling and repeated installation processes, and do not have the on-site display function required by coal safety. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/24G01M13/00
CPCG01L1/246
Inventor 宋成祥张航潘心栋孟凡龙蒋绪军
Owner 山东光安智能科技有限公司
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