CN2446200Y

CN2446200Y - Ground tackle clamping sheet

Info

Publication number: CN2446200Y
Application number: CN 00246992
Authority: CN
Inventors: 朱万旭; 唐小萍; 黄颖; 郑晓龙; 苏均
Original assignee: OUWEIMU ARCHITECTURAL MACHINERY CO Ltd LIUZHOU
Current assignee: OUWEIMU ARCHITECTURAL MACHINERY CO Ltd LIUZHOU
Priority date: 2000-08-16
Filing date: 2000-08-16
Publication date: 2001-09-05
Anticipated expiration: 2010-08-16

Abstract

The utility model relates to an anchorage clamping sheet. The anchorage clamping sheet is in a cone shape of which the conic degree of the outer conic face is consistent, and is in a two-opening type of two sheets which are integrated. A contact face of an inner hole of the utility model and a steel strand is provided with a tooth-shaped angle A of inverted tooth-shaped screw threads and a tooth-shaped angle B, wherein, the tooth-shaped angles A is from 40 DEG to 70 DEG, and the tooth-shaped angle B is from 80 DEG to 90 DEG. The length L1 of an inverted cone of an inner hole of the small end of the clamping sheet is from 7 mm to 10 mm, and the conic degree delta gamma of the inverted cone is 1: 15 to 1: 20. The outer side of the big end of the clamping sheet is provided with a semicircular groove, and a steel wire ring which surrounds the clamping sheet is arranged in the groove. The clamping has the advantages of good occlusion to steel strands, and nearly uniform stress of the steel strands at the clamping sheet point. The anchor fixation performance of anchorages is improved, and steel strands of the 2000 level and under the 2000 level are reliably clamped.

Description

Anchor clipper

The utility model relates to a kind of building operations anchor clipper.

Existing building operations is with in the strand tapered anchorage, work clip sheet is generally truncated cone-shaped, two four open types, the big 2.5mm cylindrical (referring to Fig. 1) that has an appointment that holds, and itself and steel strand contact surface are pawl shape screw thread, have elastic groove on the intermediate plate, intermediate plate small end endoporus back taper tapering is 1: 10.General employing rubber ring with one pair of intermediate plate circle together.This kind intermediate plate anchoring effect is better, but also has the following disadvantages: 1, big end is for cylindrical, and its external surface does not contact with the anchor slab internal taper hole, and is less to the clamping action that steel strand played; 2, intermediate plate small end endoporus back taper tapering is excessive, causes stress to concentrate, and it is disrumpent feelings to make that steel strand form shearing easily; 3, the intermediate plate follow-up is not concordant sometimes, can cause certain loss of prestress; 4, intermediate plate splits from elastic groove sometimes.Have, existing ground tackle for 2000 grades steel strand, does not also have specialized designs at 1860 grades and the design of following rank again.

The purpose of this utility model is to improve existing intermediate plate above shortcomings part, and the intermediate plate of 2000 grades of the reliable clampings of a kind of energy and following level other φ 15.2mm, φ 15.24mm, φ 15.7mm prestress wire is provided.

For reaching above-mentioned purpose, solution of the present utility model is: 1, cancelled the face of cylinder, intermediate plate male cone (strobilus masculinus) tapering unanimity increases the big end of intermediate plate to the steel strand chucking power; 2, reselect the zone of reasonableness of the tapering of a small end endoporus back taper; 3, redefine more rational profile angle angular range; 4, intermediate plate is not opened elastic groove, reduces the possibility of intermediate plate cracking; 5, the big end of the intermediate plate outside has a semi-circular groove, can put the wire loop circle in the groove and live one pair of intermediate plate, and the displacement of restriction intermediate plate guarantees that follow-up is concordant.

Its concrete structure is: this anchor clipper is the taper shape of male cone (strobilus masculinus) tapering unanimity, whole two two-opening types, and the profile angle A of the pawl shape screw thread that has on its endoporus and the steel strand contact surface is 40 °～70 °, and profile angle B is 80 °～90 °; The long L1 of intermediate plate small end endoporus back taper is 7～10mm, the back taper tapering It is 1: 15 to 1: 20.

Owing to adopt said structure, the utlity model has following advantage:

1, cancelled cylindrical segment, increased the big end of intermediate plate to the steel strand chucking power, small end is to the corresponding minimizing of steel strand chucking power, thereby making that steel strand are stressed at the intermediate plate place is tending towards even;

2, because profile angle has an angle with rational scope; Make intermediate plate good to the steel strand interlock, neither can cause stripped thread; Intensity also enough is unlikely to collapse tooth greatly;

3, the range of taper of small end endoporus back taper is more reasonable, and steel strand stress is disperseed;

4, intermediate plate is not slotted, and has reduced the possibility of intermediate plate cracking.

5, the big end of the intermediate plate outside has a semi-circular groove, can put the wire loop circle in the groove and live one pair of intermediate plate, and the displacement of restriction intermediate plate guarantees that follow-up is concordant.

By above measure, improved the anchoring property of ground tackle, through the check of national inspection center, 2000 grades of its clampings and following other steel strand of level thereof have satisfied the requirement of the relevant world, domestic standard well.

Below, the architectural feature to the anchor clipper of the utility model is described further in conjunction with the accompanying drawings and embodiments.

Fig. 1: existing anchor clipper structural representation

Fig. 2: the utility model anchor clipper structural representation.

Embodiment

A kind of anchor clipper.As shown in Figure 2, this anchor clipper is the taper shape of male cone (strobilus masculinus) tapering unanimity, whole two two-opening types, and the profile angle A of the pawl shape screw thread that has on its endoporus and the steel strand contact surface is 40 °～70 °, and profile angle B is 80 °～90 °; The long L1 of intermediate plate small end endoporus back taper is 7～10mm, the back taper tapering Be 1: 15～1: 20, the big end of the intermediate plate outside has a semi-circular groove, can put the wire loop circle in the groove and live one pair of intermediate plate.

As a kind of conversion of the present utility model, described intermediate plate also can be whole three-chip type.

Claims

1, a kind of anchor clipper has pawl shape screw thread on its endoporus and the steel strand contact surface, it is characterized in that: described intermediate plate is taper shape, its male cone (strobilus masculinus) tapering unanimity.

2, anchor clipper as claimed in claim 1 is characterized in that: intermediate plate small end endoporus back taper long (L1) is 7～10mm, the back taper tapering ( ) be 1: 15～1: 20.

3, anchor clipper as claimed in claim 1 or 2 is characterized in that: the profile angle (A) of the pawl shape screw thread that has on its endoporus and the steel strand contact surface is 40 °～70 °, and profile angle (B) is 80 °～90 °.

4, anchor clipper as claimed in claim 1 or 2 is characterized in that: described intermediate plate is whole two two-opening types.

5, anchor clipper as claimed in claim 1 or 2 is characterized in that: the big end of the described intermediate plate outside has a semi-circular groove.