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Synchronous force measuring bolt

A bolt and force measurement technology, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of no synchronous monitoring of bolts, lack of scientific load-bearing monitoring methods, etc., and achieve the effect of high mechanical performance

Inactive Publication Date: 2015-09-02
陶茂琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is a lack of scientific load-bearing monitoring means for the bolting support of coal mine roadway bolts, and there is no synchronous monitoring of bolts on the market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Such as figure 1 and figure 2 As shown, a synchronous force-measuring bolt includes a rod body 1 and a bolt terminal 4 for receiving monitoring data of the bolt. Both sides of the rod body 1 are symmetrically milled with installation grooves, and strain gauges 2 are arranged in the installation grooves. One end of the rod body 1 is provided with an expandable anchor head 10 for anchoring the rod body 1, and the other end of the rod body 1 is provided with a protective cover 7, and the protective cover 7 is fastened on the rod body 1 by a nut 8, and the protective cover 7 The pin type aviation socket 6 is connected with the connecting wire 11 communicating with the strain gauge 2 , and the anchor rod terminal 4 is connected with the pin type aviation plug 5 matched with the pin type aviation socket 6 .

[0025] In order to collect bolt monitoring data in real time and adjust the sampling interval period, the bolt monitoring data is transmitted wirelessly, and the prese...

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PUM

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Abstract

The invention discloses a synchronous force measuring bolt comprising a bolt body and a bolt terminal used for receiving bolt monitored data. Mounting grooves are milled in two symmetrical sides of the bolt body, foil gauges are arranged in the mounting grooves, one end of the bolt body is provided with an expansion head used for fixing the bolt body, the other end of the bolt body is provided with a protective sleeve, the protective sleeve is tightly fixed to the bolt body through a nut, a needle aviation socket mounted in the protective sleeve is connected with connecting wires connected with the foil gauges, and the bolt terminal is connected with a needle aviation plug matching the needle aviation socket. The synchronous force measuring bolt is provided with a hand-held receiving terminal, the sampling interval period can be conveniently adjusted, the working condition of a support system can be monitored in real time.

Description

technical field [0001] The invention relates to the technical field of force measurement of anchor bolts, in particular to a synchronous force measurement bolt. Background technique [0002] The force-measuring bolt is a test instrument used for stress detection of the surrounding rock of the underground roadway in coal mines, and is the most effective detection method for analyzing the internal stress of the surrounding rock of the roadway. The force-measuring anchor adopts the principle of resistance strain widely used in engineering inspections. The resistance strain gauge is used as the sensitive element, and the resistance strain gauge and the rod body of the force-measuring anchor are bonded together. When the force-measuring anchor deforms under force, The resistance value of the strain gauge also changes accordingly. Therefore, by measuring the resistance change of the strain gauge with the receiving instrument, the strain value of the rod body can be obtained, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00
Inventor 陶茂琴
Owner 陶茂琴
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