Clamping anchor with oblique section

A technology of oblique cutting surface and clamping piece, which is applied in the field of steel strand anchors, can solve the problems of reducing the number of repeated use of anchors, easy damage of anchors, and increasing production costs, so as to achieve stable anchoring, easy manufacture, and ensure safe production Effect

Inactive Publication Date: 2003-06-25
虞德顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steel strand is made of a number of steel wires twisted together, and its outer surface presents helical unevenness. Therefore, when it is anchored by the anchorage, because the semicircular clips are in parallel contact with the strands, the inside of the clips The twisting angle of the surface and the steel strand is different, but only the protruding part of the surface of the strand is in contact with the clip, and the clamping area of ​​the clip is only 2 / 3 of the surface area that the steel strand in the anchorage should be clamped, which is not only The anchoring force is greatly reduced, and the anchorage is easy to be damaged, which reduces the number of reused anchorages and increases production costs, especially in the process of strong tensioning of steel strands, which is prone to slipping wire failures and affects safe production

Method used

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  • Clamping anchor with oblique section
  • Clamping anchor with oblique section
  • Clamping anchor with oblique section

Examples

Experimental program
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Embodiment Construction

[0014] Such as figure 1 As shown, the anchor sleeve 1 of the bevel clip anchor is set on the end of the anchored steel strand 3, and the bevel clip 2 is inserted between the sleeve 1 and the strand 3, and the clip 2 The inner arc surface is closely attached to the twisted steel wire of the stranded wire 3 .

[0015] Such as figure 2 , 3 As shown in , 4, the anchor sleeve 1 is a steel cylinder with a conical cylindrical inner cavity, the length a=35-45mm, the outer diameter Φ1=25-30mm, the inner cavity of the sleeve is conical cylindrical, and the bottom is round Diameter Φ2 = 20-25mm, top circle diameter Φ3 = 10-15mm.

[0016] Such as Figure 5 , 6 , 7 and 8, the bevel clip 2 is an arc-shaped cone with longitudinal bevels on both sides, its length S is equal to that of the sleeve, the outer arc radius R1 at the bottom of the cone is 9-12mm, and the top Outer arc radius R2=6~8mm, long inner arc radius R3=3~5mm, transverse thread 7 is formed on the inner arc surface, a tr...

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Abstract

An anchor with oblique-section clamping plates is composed of twisted cable, sleeve tube with the diameter of 25-30 mm of external circumference or 20-25 mm for internal circumference, and clamping plates with internal arc surface having transverse spiral thread, external arc surface having transverse groove and two oblique sections on longitudinal sides. Said clamping plates are installed between sleeve tube and twisted cable for bearing the tension force of twist cable.

Description

technical field [0001] The utility model relates to a bevel clip anchorage suitable for anchoring steel strands, which belongs to the technical field of steel strand anchorages. Background technique [0002] At present, in the production of prestressed steel strand concrete members, the steel strand anchorage used is generally composed of two symmetrical semicircular clips inserted into the anchor sleeve, and the practice of anchoring steel bars is continued. However, the steel strand is made of a number of steel wires twisted together, and its outer surface presents helical unevenness. Therefore, when it is anchored by the anchorage, because the semicircular clips are in parallel contact with the strands, the inside of the clips The twisting angle of the surface and the steel strand is different, but only the protruding part of the surface of the strand is in contact with the clip, and the clamping area of ​​the clip is only 2 / 3 of the surface area that the steel strand in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/12E04G21/12
Inventor 虞德顺
Owner 虞德顺
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