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Backstop high-expansion expansion bolt

An expansion bolt and expansion technology, which is applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problem that the axial outward and inward movement of the bolt cannot be restricted at the same time, and achieve the effect of high expansion force and not easy to fall off

Pending Publication Date: 2020-05-29
马娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the expansion bolts of the existing structure cannot simultaneously limit the outward and inward movement of the bolt along the axial direction, the present invention provides a high-expansion expansion bolt with anti-retraction, including:

Method used

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  • Backstop high-expansion expansion bolt
  • Backstop high-expansion expansion bolt
  • Backstop high-expansion expansion bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] see Figure 1-Figure 5 It is a kind of anti-retraction high-expansion expansion bolt in one embodiment, including:

[0030] The bolt body 1 is provided with a push block 11 at its front;

[0031] The outer casing 3 is arranged outside the bolt body 1;

[0032] The nut 2 is matched with the bolt body 1; a spring pad 5 and a washer 6 are also arranged between the nut 2 and the outer sleeve 3;

[0033] Wherein, a clamping block 4 is installed on the pushing block 11, a clamping plate 32 and a pushing groove 33 are arranged at the front of the outer sleeve 3, and the movement of the pushing block 11 makes the clamping block 4 rotate and expand the clamping plate 32 at the same time. open, so that the clamping block 4 and the clamping plate 32 can be bidirectionally locked. For the expansion bolts of the existing structure, the tail of the outer casing expands to form a trumpet-shaped opening and the wall is clamped. When the bolt is pulled outward by an external force, t...

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Abstract

The invention provides a backstop high-expansion expansion bolt which comprises a bolt body, an outer sleeve and a nut. A pushing block is arranged at the front part of the bolt body; the outer sleeveis arranged outside the bolt body; the nut is matched with the bolt body; a spring pad and a washer are further arranged between the nut and the outer sleeve; a clamping block is installed on the pushing block, a clamping plate and a pushing groove are arranged at the front part of the outer sleeve, and the pushing block moves to enable the clamping block to rotate and simultaneously enable the clamping plate to expand, so that the clamping block and the clamping plate can be bidirectionally locked. The pushing block moves to enable the clamping block and the clamping plate to expand in two opposite directions simultaneously, therefore the device can limit outward and inward movement in the axial direction simultaneously, high expansion force can be generated, and falling is not likely tooccur.

Description

technical field [0001] The invention relates to the technical field of fasteners and bolts, in particular to an anti-retraction high-expansion expansion bolt. Background technique [0002] The principle of the expansion bolt is to drive the expansion bolt into the hole on the ground or the wall, then use a wrench to tighten the nut on the expansion bolt, the bolt goes out, but the outer metal sleeve does not move, so the big head under the bolt will move The metal sleeve expands to make it fill the entire hole. At this time, the expansion bolt cannot be extracted. [0003] For the expansion bolts of the existing structure, the tail of the outer metal sleeve expands to form a trumpet-shaped opening and the wall is clamped. When the bolt is pulled outward by an external force, the trumpet-shaped opening at the tail of the outer casing will shrink, causing the expansion bolt to fall off, and the bolt cannot be fixed. Axial outward and inward movement is restricted simultaneous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B13/06
CPCF16B13/065F16B13/066
Inventor 马娜
Owner 马娜
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