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A bolt fastening force state indicating washer

A state indication and tightening force technology, applied in the installation of bolts, mining devices, mining equipment, etc., can solve the problems of inability to indicate and detect the bolt tightening force status, and achieve low installation torque, high preload, The effect of eliminating end-face friction

Active Publication Date: 2017-01-18
UROICA (SHANDONG) MINING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a bolt fastening force state indicating washer, which solves the problem that the state of the bolt fastening force cannot be indicated and detected in the prior art. The friction between the nut and the pallet and the effect of enhancing the shear resistance of the pallet

Method used

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  • A bolt fastening force state indicating washer
  • A bolt fastening force state indicating washer
  • A bolt fastening force state indicating washer

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Experimental program
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Effect test

Embodiment 1

[0031] Such as Figure 1~3 As mentioned above, the present invention includes a deformation unit and an electric control unit. The deformation unit includes an upper extruding body 1, a lower extruding body 2 and a pressure bearing body 3; The indicating device, the anchor breaking warning indicating device and the power supply 5; The circuit board 4 is fixedly installed on the lower extrusion body 2 by screws.

Embodiment 2

[0033] Such as Figure 1~3As mentioned above, the present invention includes a deformation unit and an electric control unit. The deformation unit includes an upper extruding body 1, a lower extruding body 2 and a pressure bearing body 3; The indicating device, the anchor breaking warning indicating device and the power supply 5; The pretightening force standard indicating device includes a high contact switch 6 and a yellow LED indicator light 9, and the anchor breakage warning indicating device includes a short contact switch 7 and a red LED indicator light 10; the high contact switch 6 and the short contact switch 7 respectively Control yellow LED indicator light 9 and red LED indicator light 10. The power supply 5 is specifically a button battery. The circuit board 4 is fixedly installed on the lower extrusion body 2 by strong glue; the high contact switch 6 and the short contact switch 7 are fixedly installed on the circuit board 4 by screws; the high contact switch 6 i...

Embodiment 3

[0040] Such as Figure 1~3 As mentioned above, the present invention includes a deformation unit and an electric control unit. The deformation unit includes an upper extruding body 1, a lower extruding body 2 and a pressure bearing body 3; The indicating device, the anchor breaking warning indicating device and the power supply 5; The pretightening force standard indicating device includes a high contact switch 6 and a yellow LED indicator light 9, and the anchor breakage warning indicating device includes a short contact switch 7 and a red LED indicator light 10; the high contact switch 6 and the short contact switch 7 respectively Control yellow LED indicator light 9 and red LED indicator light 10. The power source 5 is specifically a storage battery. The circuit board 4 is fixedly installed on the lower extrusion body 2 by screws and strong glue; the high contact switch 6 and the short contact switch 7 are fixedly installed on the circuit board 4 by strong glue; the high ...

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Abstract

The invention provides an anchor bolt fastening force status indication washer comprising a deforming unit and an electric control unit. The deforming unit comprises an upper squeeze part, a lower squeeze part and a bearing part. The electric control unit comprises a circuit board, a photosensitive switch, a pre-tightening force compliance indicator, an anchor bolt breakage warning indicator, and a power source. The pre-tightening force compliance indicator and the anchor bolt breakage warning indicator parallelly connected to a circuit, the power source, and the photosensitive switch form a complete loop. The outer surface of the washer is smooth, and the washer has the functions of quantizing anchor bolt pre-tightening force, warning on anchor bolt breakage, eliminating friction between a nut and a tray and enhancing shear resistance of the tray, and is applicable to industrial popularization and application.

Description

technical field [0001] The invention relates to the field of bolt support, in particular to a washer for indicating the fastening force state of a bolt. Background technique [0002] With the continuous improvement and innovation of roadway support technology and the continuous development of the anchoring theory level, the application technology level of prestressed anchorage technology for roadway bolt support is also constantly improving. Now it is widely used in tunnels, buildings, mines and many other underground projects. field. With the rapid development of the economy, the society's demand for energy is increasing day by day, and the easy-to-mine resources in the shallow area are becoming increasingly exhausted, which cannot meet the needs of economic development. Therefore, the scale of the mine is constantly expanding, and the mine is gradually advancing to the deep part. At present Mines at home and abroad are developing deep resources. The traditional bolt supp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D21/02E21F17/18
CPCE21D21/02
Inventor 黄屹峰林超连小勇
Owner UROICA (SHANDONG) MINING TECH CO LTD
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