Contact surface friction force measuring device

A measuring device and friction force technology, applied in the field of contact surface friction force measuring devices, can solve problems such as urgent need and few sensors, and achieve the effect of realizing health monitoring, reducing friction force, and avoiding direct contact with rust

Pending Publication Date: 2022-04-12
BEIJING CHINA COAL MINE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are still relatively few sensors that directly measure the friction force of the contact surface, and the engineering community is in urgent need of friction force monitoring equipment.

Method used

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  • Contact surface friction force measuring device
  • Contact surface friction force measuring device
  • Contact surface friction force measuring device

Examples

Experimental program
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Effect test

Embodiment Construction

[0044] The contact surface friction measurement device of this embodiment includes a measuring mechanism for measuring the contact surface friction, a fixed support mechanism for fixing and supporting the measuring mechanism, and a block for eliminating the influence of pressure around the measuring mechanism mechanism; both the measuring mechanism and the blocking mechanism are fixedly installed on the fixed supporting mechanism, and the measuring mechanism is located in the space surrounded by the blocking mechanism, the fixed supporting mechanism and the surrounding rock; as Figure 5 As shown, the measuring mechanism includes a sliding backing plate 11, a friction box 2 and an inductor 4, the blocking mechanism includes a plastic casing 1 and a plastic casing limit baffle 6 located around the plastic casing 1, and the fixed The support mechanism includes a base tray 5 and a base fixing steel bar 16 .

[0045] Such as figure 2 and image 3 As shown, the sliding backing p...

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Abstract

The invention discloses a contact surface friction force measuring device which comprises a measuring mechanism used for measuring the friction force of a contact surface, a fixing and supporting mechanism used for fixing and supporting the measuring mechanism and a blocking mechanism used for eliminating the influence of the surrounding pressure of the measuring mechanism. The measuring mechanism and the blocking mechanism are both fixedly installed on the fixed supporting mechanism, and the measuring mechanism is located in a space defined by the blocking mechanism, the fixed supporting mechanism and the surrounding rock. The device is pre-buried in a tunnel lining or other concrete structures of underground engineering in advance, and the friction force between the concrete structures and the contact surface of the surrounding rock is measured in real time, so that the health monitoring of the underground engineering structure is realized, and the safety accident of the underground engineering structure caused by the fault slippage of the surrounding rock is avoided.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering structure health monitoring. Specifically, it is a contact surface friction measuring device. Background technique [0002] When underground projects such as tunnels and shafts encounter stratum overload induced by other factors such as earthquakes or water drainage, the stress state of the interface between the structure and the surrounding rock becomes more and more complicated, and it is easy to cause stress concentration in the stress concentration part of the underground project or the weak link of the structure. The supporting structure failed, causing an accident. For example, the Sichuan-Tibet Railway under construction passes through multiple seismic zones, and the geological conditions along the line are extremely complex. A large number of tunnels are excavated across multiple fault slip zones. The earthquake-induced fault slip zone inter-disc dislocation will lead to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/02
Inventor 宁方波谭杰高伟许舒荣宋朝阳张广宇王媛
Owner BEIJING CHINA COAL MINE ENG CO LTD
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