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Anchoring force pre-warning device for anchor rod

A technology of early warning device and anchoring force, applied in measuring devices, force/torque/work measuring instruments, instruments, etc., can solve the problems of many device components and cumbersome operation process, so as to improve the integrity, ensure safe and efficient production, The effect of improving the support ability

Inactive Publication Date: 2015-04-29
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of this invention is to solve the problems of many components, cumbersome operation process and cost of the bolt anchorage force detection system, and to provide an early warning device for non-destructive detection of anchorage force with simple structure and operation

Method used

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  • Anchoring force pre-warning device for anchor rod
  • Anchoring force pre-warning device for anchor rod
  • Anchoring force pre-warning device for anchor rod

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described:

[0023] like Figure 1-7 As shown, the bolt anchoring force early warning device of the present invention includes: a shell 1, a high-strength central spring 2, a rack 10, a side reflective tape and a rotatable wide-angle reflective tape 4, a vertical plastic helical bevel gear 3, and an outer ball Shell 13 and inner spherical shell 14, upper base 15 and lower base 16, hollow cylinder 18, the central spring 2 is welded in the central circular groove of the upper base 15 and the lower base 16; the bottom end of the rack 10 Welded on the upper base 15, the rack 10 extends into the inner spherical shell 14 through the small hole on the edge of the central circular groove of the lower base 15, and the rack 10 is meshed with the vertical gear 11; the vertical gear 11 is connected with the horizontal gear 12 toothed and connected; the large-diameter inner ...

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Abstract

The invention discloses an anchoring force pre-warning device for an anchor rod. The anchoring force pre-warning device for the anchor rod comprises an outer shell, a high-strength central spring, a rack, a side reflective band and a rotary wide angle reflective band, gears, an outer piece spherical shell, an inner piece spherical shell, an upper base, a lower base and a hollow core cylinder. The central spring is welded to central circular grooves of the upper base and the lower base. The anchoring force pre-warning device has the functions that when anchoring force of the anchor rod is lowered, the central spring is relaxed, so that the rack drives the vertical gear to rotate, the vertical gear drives the horizontal gear to rotate, the horizontal gear drives the inner piece spherical shell to rotate, the inner piece spherical shell rotates relative to the outer piece spherical shell, the reflective band on the outer surface of the inner piece spherical shell hidden inside the outer piece spherical shell is exposed, and an anchor rod with insufficient anchoring force is distinguished by lighting the reflective light band through lamplight. Therefore, the pre-warning device for nondestructively detecting the anchoring force is simple in structure and easy to operate.

Description

Technical field: [0001] The invention relates to an early warning device for anchoring force of a bolt, in particular to an early warning device for non-destructive detection of a stressed state of a bolt. Background technique: [0002] At present, the mining or development depth of many mines in China has exceeded 700m, and some have even exceeded 1000m. The unfavorable situation of secondary expansion and multiple support. Soft rock is weak in strength, poor in structure, large in deformation, wide in the surrounding rock loose area of ​​the roadway, and poor in rock mass bearing capacity. Therefore, the requirements for anchor rods are getting higher and higher. In today's coal mining process, because the support quality does not meet the design standards, it is constantly being repaired. Due to the inappropriate installation of the anchoring agent, the anchor will be unanchored after a period of time, and the anchoring force will be insufficient. In the roadway, the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
Inventor 胡志强訾城卢辉王奈羿井司
Owner ANHUI UNIV OF SCI & TECH
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