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Pinching Expansion Bolt

A technology of expansion bolts and expansion tubes, which is applied in the field of special fixed connectors, can solve problems such as tail shrinkage, unstable seams of bent expansion tubes, and failure to achieve expansion effects, and achieve the effect of not being easy to slip out

Inactive Publication Date: 2018-01-05
徐发煌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the patent records of convex expansion bolts or double convex expansion bolts, the convex strips are not easy to bend the seam edge, and the seam edge of the expansion tube is adjacent to the helical line. Unstable, unable to achieve expansion effect
The large-diameter end of the cone of the existing expansion bolt is too short, and the expansion piece will shrink after being squeezed through the large-diameter end, reducing the expansion strength

Method used

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  • Pinching Expansion Bolt
  • Pinching Expansion Bolt
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The clamp expansion bolt is composed of expansion tube (1), screw rod (2), nut (3), washer (4), spring washer (20), etc., and a cone (5) or screw rod is arranged at one end of the nut (3) (2) One end is provided with a cone (5). The cone (5) is provided with a spiral buttress (6), and both sides of the spiral buttress (6) are provided with a spiral buttress (7), and the wall of the spiral buttress (7) is an acute angle (8) or an arc surface (9), the small diameter end of the cone (5) is provided with a high wall (10), and the high wall (10) gradually advances to a shallow wall (11) at the large diameter end. A wide clamping channel (12) is set at the inlet end of the spiral clamping channel (6), and the wide clamping channel (12) gradually advances to the large diameter end to set a narrow clamping channel (13). The large-diameter end of the cone (5) is provided with a cylinder (14). Set the spiral clip (15) on the expansion tube (1), the width of the spiral clip (15)...

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PUM

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Abstract

A clamping expansion bolt is composed of an expansion tube, a nut, a screw, a washer, a spring washer, etc., and a cone is provided at one end of the nut or there is no cone at one end of the screw. The cone is provided with a spiral line, and both sides of the spiral line are provided with a spiral buttress, and the wall of the spiral buttress is set with an acute angle or an arc surface, and a high wall is provided at the small diameter end of the cone, and the high wall gradually extends to the large The diameter end is provided with shallow wall. A wide lane is set at the inlet end of the spiral lane, and the wide lane gradually extends to the large diameter end to set a narrow lane. The large-diameter end of the cone is provided with a cylinder. There is a spiral clip on the expansion tube, the width of the spiral clip is set larger than the narrow channel, and the hemming head is set at the slit end of the spiral clip, which is easy to enter the spiral clamp and stably stretch and fold. The helical clip is gradually stretched and folded by the helical channel to the narrow channel, and the helical clip is forced into the cylinder to expand and tighten to the foundation hole wall, and the sawtooth penetrates into the claw to tighten and fix.

Description

technical field [0001] The invention relates to a special fixed connector for installing machinery, equipment, structural parts and the like. Background technique [0002] The existing expansion bolt consists of a screw rod, a nut, an expansion tube, a washer, a spring and a washer, and one end of the screw rod is a cone. When turning with a wrench, the expansion tube moves toward the cone, gradually increasing the expansion tube. Rough concavo-convex lines are provided on the peripheral surface of the expandable tube, which has already been formed on the peripheral surface of the expandable tube, and there is no change and increase. In the patent records of convex expansion bolts or double convex expansion bolts, the convex strips are not easy to bend the seam edge, and the seam edge of the expansion tube is adjacent to the helical line. Unstable, unable to achieve expansion effect. The large-diameter end of the conical body of the existing expansion bolt is too short, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B13/06
Inventor 徐发煌徐华丽苏家宏
Owner 徐发煌
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