CN1330194A

CN1330194A - Clamping anchor with oblique section

Info

Publication number: CN1330194A
Application number: CN 00109228
Authority: CN
Inventors: 虞德顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-16
Filing date: 2000-06-16
Publication date: 2002-01-09
Anticipated expiration: 2020-06-16
Also published as: CN1112492C

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

Clamping anchor with oblique section

A kind of clamping anchor with oblique section that is applicable to the anchoring steel hinge line belongs to steel strand anchoring field.

At present, in the prestress wire concrete component is produced, employed steel strand anchorage, the semicircle intermediate plate that is generally two symmetries inserts the anchor cover and constitutes, and prolongs the practice with anchor bar.But, steel strand are to be kinked mutually by some steel wires to form, its external surface presents spiral helicine rough and uneven in surface, so during by the ground tackle anchoring, because the semicircle intermediate plate is in parastate with twisted wire and contacts, intermediate plate inner surface and the steel strand lead of screw angle that kinks is inequality, and have only twisted wire surface projection to contact with intermediate plate, and intermediate plate clamping area only has the interior steel strand of ground tackle should be by 2/3 of clamping surface area, and this not only greatly reduces anchored force, and ground tackle is easy to damage, reduce ground tackle and reuse number of times, increase cost of production, particularly steel strand in powerful stretching process, be easy to generate the stripped thread fault, the influence safety in production.

The purpose of this invention is to provide a kind of anchor clipper and steel strand surface fully closely connected, do not weaken anchored force, and can repeatedly repeat a kind of clamping anchor with oblique section of using safely.

Technical scheme of the present invention is: this kind ground tackle is to be made of steel anchor sleeve and scarf intermediate plate, and each size of anchor sleeve is set according to pulling force that will be born by the anchor twisted wire and twisted wire external diameter, general length a=35～45mm, outside diameter φ ₁=25～30mm, barrel bore are circular cone cylindricalitys, end circular diameter φ ₂=20～25mm, outside diameter circle φ ₃=10～15mm; The scarf intermediate plate is installed in the anchor sleeve, and intermediate plate quantity is with consistent by anchoring twisted wire top layer steel wire quantity, and steel strand are inserted in the cylindrical cavity that is surrounded by several piece circular arc intermediate plate, and twisted pair wire is executed reinforcement edge.The scarf intermediate plate is the arc cone that both sides are vertical scarf, and its length S and sleeve are isometric, cone bottom outer arc radius R ₁=9～12mm, top outer arc radius R ₂=6～8mm, elongated inner arc radius R ₃=3～5mm, all be shaped on horizontal thread on the intermediate plate intrados, be convenient to carve card by the anchor twisted wire, the extrados bottom is shaped on a lateral trench, be used for ligation combination intermediate plate, the vertical both sides of intermediate plate cut into two scarves that cross one another, and tangent plane gradient and the steel strand lead of screw gradient that kinks is consistent, so that the whole embeddings of every section steel wire of twisted wire anchoring section are crouched in intermediate plate screw thread intrados, reach closely connected entirely, strong anchoring, be difficult for the purpose of stripped thread.

Advantage of the present invention is: 1, the tangent plane gradient of ground tackle scarf intermediate plate is consistent with the twisted wire lead of screw, makes the steel wire of intermediate plate intrados and twisted wire anchoring section closely connected fully, has improved ground tackle and has executed the anchor performance; 2, make easily, and can be repeatedly used, reduce the concrete component cost; 3, anchoring is stable, is difficult for stripped thread, ensures safety in production.

Further specify the present invention below in conjunction with accompanying drawing with embodiment:

Fig. 1 is the schematic perspective view of the present invention and steel strand combination.

Fig. 2 looks schematic diagram for anchor sleeve master of the present invention.

Fig. 3 looks schematic diagram for the left side of Fig. 2.

Fig. 4 looks schematic diagram for the right side of Fig. 2.

Fig. 5 looks schematic diagram for the master of scarf intermediate plate of the present invention.

Fig. 6 looks schematic diagram for the left side of Fig. 5.

Fig. 7 looks schematic diagram for the right side of Fig. 5.

Fig. 8 is the schematic top plan view of Fig. 5.

As shown in Figure 1, the anchor sleeve 1 of clamping anchor with oblique section is sleeved on by the termination of anchor steel strand 3, and scarf intermediate plate 2 is inserted between sleeve 1 and the twisted wire 3, and makes the intrados of intermediate plate 2 mutually closely connected with the steel wire that kinks of twisted wire 3.

Shown in Fig. 2,3,4, anchor sleeve 1 is a steel cylinders that inner chamber is the circular cone cylindricality, length a=35～45mm, outside diameter φ ₁=25～30mm, barrel bore are the circular cone cylindricality, end circular diameter φ ₂=20～25mm, outside diameter circle φ ₃=10～15mm.

As Fig. 5,6,7,8, shown in, scarf intermediate plate 2 is arc cones that both sides are vertical scarf, its length S and sleeve are isometric, cone bottom outer arc radius R ₁=9～12mm, top outer arc radius R ₂=6～8mm, elongated inner arc radius R ₃=3～5mm all is shaped on horizontal thread 7 on the intrados, cone bottom extrados is shaped on a lateral trench 6, and intermediate plate 2 vertical both sides cut into two scarves 4 and 5 that cross one another, and tangent plane gradient and the steel strand lead of screw gradient that kinks is consistent.

Claims

1, a kind of clamping anchor with oblique section that is made of steel anchor sleeve and scarf intermediate plate is characterized in that: anchor length sleeve a=35～45mm, outside diameter φ ₁=25～30mm, barrel bore are the circular cone cylindricality, end circular diameter φ ₂=20～25mm, outside diameter circle φ ₃=10～15mm; The scarf intermediate plate is the arc cone that both sides are vertical scarf, and its length S and sleeve are isometric, cone bottom outer arc radius R ₁=9～12mm, top outer arc radius R ₂=6～8mm, elongated inner arc radius R ₃=3～5mm all is shaped on horizontal thread on the intrados, the extrados bottom is shaped on a lateral trench, and the vertical both sides of intermediate plate cut into two scarves that cross one another, and tangent plane gradient and the steel strand lead of screw gradient that kinks is consistent.