Anti-self-locking anchor-bolt support plate

A self-locking bolt and supporting plate technology, which is applied to the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of reducing the service life of the bolt supporting plate, thread damage, and bolt breakage, so as to avoid the bolt Thread breakage, improved service life, and construction cost savings

Inactive Publication Date: 2013-01-30
TIANDI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anchor supporting plate with the above structure can play a good role in supporting the underground roadway; however, the shortcomings of the anchor supporting plate of this structure are also quite obvious; it is mainly reflected in that when the steel belts on both sides of the anchor are When under pressure, a certain degree of deformation and bending will occur, forcing the anchor support plate at the lower end of the steel strip to squeeze against the central rotating part at the bottom, and the stress generated by the extrusion is transmitted to the outer rotating surface of the self-aligning ball pad through the inner rotating surface , and conduct through the self-aligning ball pad to the center line of the lower part of the anchor rod; eventually the self-aligning ball pad is stuck between the central rotating part of the anchor rod support plate and the anchor rod and cannot rotate, which is commonly referred to as self-locking phenomenon; the self-aligning ball pad immediately loses its function of adjusting the centerline position of the anchor rod and relieving the force on the lower part of the anchor rod; Damage, what's more, directly leads to the breakage of the anchor rod, which greatly reduces the service life of the anchor support plate

Method used

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  • Anti-self-locking anchor-bolt support plate
  • Anti-self-locking anchor-bolt support plate
  • Anti-self-locking anchor-bolt support plate

Examples

Experimental program
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Embodiment 1

[0022] see figure 2 , image 3 As shown, an anti-self-locking anchor supporting plate of the present invention has an arched tray 1, and a steel belt 2 is arranged on the arched tray. The steel belt in this embodiment adopts w Shaped steel strip; the steel strip is provided with an anchor hole 3, and an anchor 4 is arranged in the anchor hole. In this embodiment, the anchor hole is arranged along the center line of the anchor; the arched tray The round arch portion 5 of the anchor rod is provided with a stress through hole 6 along the centerline direction of the anchor rod, and the arched tray is worn with the anchor rod through the stress through hole; a self-aligning ball pad is arranged under the arched tray 7. A central rotating part 8 is provided on the upper part of the self-aligning ball pad, and the inner rotating surface 9 of the central rotating part is arranged in cooperation with the outer rotating surface 10 of the circular arch; the bottom end surface of the se...

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PUM

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Abstract

The invention provides an anti-self-locking anchor-bolt support plate. A self-aligning ball pad is arranged below an arched tray of the anchor-bolt support plate, the upper part of the self-aligning ball pad is provided with a central rotary component, and the internal rotary surface of the central rotary component and the external rotary surface of a circular arch part are cooperatively arranged. According to the invention, by adopting a design of cooperatively arranging the internal rotary surface of the central rotary component and the external rotary surface of the circular arch part, the occurrence of a phenomena that the self-aligning ball pad is self-locked because a stress generated by the downward bending of a steel belt acts on the self-aligning ball pad can be effectively prevented.

Description

technical field [0001] The invention relates to an anti-self-locking anchor supporting plate, in particular to an anchor supporting plate which can prevent the self-locking of self-aligning ball pads and is applied to the support system of underground roadways in coal mines. Background technique [0002] At present, the use of bolt support technology is the most common form of support for underground coal mine roadways in my country. And the bolt supporting plate is indispensable in the bolt support technology; figure 1 Among them is the most commonly used anchor supporting plate structure at present. The anchor supporting plate has a high-strength arched tray 101, and a steel belt 102 is arranged on the arched tray. The steel belt is provided with an anchor hole 103. An anchor rod 104 is provided in the anchor rod hole; a central rotating part 105 with a hole in the center is provided at the bottom of the arched tray, and a self-aligning ball pad 106 is installed in the ce...

Claims

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Application Information

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IPC IPC(8): E21D21/00
Inventor 吴拥政林健颜立新姜鹏飞
Owner TIANDI SCI & TECH CO LTD
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