CN214272656U

CN214272656U - Single-hole anchorage device for slow bonding prestress construction

Info

Publication number: CN214272656U
Application number: CN202022854241.6U
Authority: CN
Inventors: 牛东坡; 薛广浩
Original assignee: Lanzhou Sikaite Road And Bridge Prestressed Technical Development Co ltd
Current assignee: Lanzhou Sikaite Road And Bridge Prestressed Technical Development Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-09-24
Anticipated expiration: 2030-12-01

Abstract

The utility model belongs to the field of prestressed anchorage devices, and discloses a single-hole anchorage device for slow bonding prestress construction, which comprises an anchorage device body, wherein the tail shell is fixed at the tail part of the anchorage device body, clamping mechanisms are symmetrically arranged at two sides of the axis of a conical hole in the tail shell, a sliding hole is arranged on the tail shell, a slider is arranged in the sliding hole and can be slidably connected with the sliding hole, clamping plates are fixed on the slider, one end of a pressure spring is fixed with the slider, the other end of the pressure spring is fixed on the side wall of the tail shell, the distance between two clamping plates is reduced when the slider slides towards the conical hole, when a steel strand passes through the conical hole and extends from a clamping piece to the two clamping plates, the clamping plates are pushed to move until the steel strand is positioned between the two clamping plates, the two clamping plates are always contacted with the steel strand, when the steel strand has a pulling force towards the direction of the conical hole, the steel strand can drive the two clamping plates to move towards the direction of the conical hole, the steel strand can be clamped even if the clamping piece is not matched with the conical hole in place, the connection strength of the steel strand and the anchorage device body can be ensured.

Description

Single-hole anchorage device for slow bonding prestress construction

Technical Field

The utility model belongs to prestressed anchorage utensil field especially relates to a slow bonding haplopore ground tackle for prestressed construction.

Background

The anchorage device is a permanent anchoring device used in prestressed concrete, in a post-tensioning structure or component, in order to keep the tension of a prestressed tendon and transmit the tension to an anchoring tool in the concrete, also called a prestressed anchorage device, a clamping piece type anchorage device is used for anchoring a steel strand by utilizing the wedge fastening principle of a taper hole, namely a wedge-shaped clamping piece anchors the steel strand in a taper hole of an anchor plate, when a jack is used for tensioning the steel strand and reaches a designed stress value, the jack is slowly released for tensioning, the clamping piece of the anchorage device is taken into the taper hole of the anchor plate by the steel strand which moves in a retracting manner at a constant speed to form an anchoring unit, the stress of the steel strand is transmitted to a building structure through the anchor plate and an anchor backing plate to form permanent prestress, the taper hole is generally opened on the anchorage device, the clamping piece is arranged in the taper hole, the existing single-hole anchorage device only depends on the matching of the clamping piece and the taper hole to play a role of anchoring the steel strand, the condition that the clamping piece is not matched with the tapered hole in place easily occurs in the implementation process, so that the steel strand anchor is connected in a deficient mode, and the connection strength cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the single-hole anchorage device can improve the connection strength of the steel strand and the anchorage device, and can ensure the connection strength of the anchorage device and the steel strand even if the clamping piece is not matched with the tapered hole of the anchorage device in place.

The utility model adopts the technical scheme as follows:

the utility model provides a slow bonding is haplopore ground tackle for prestressing force construction, includes ground tackle body and clamping piece, the ground tackle body has the bell mouth, the clamping piece is located the bell mouth, its characterized in that: a tail shell is fixed at the tail part of the anchor device body, clamping mechanisms are symmetrically arranged in the tail shell on two sides of the axis of the tapered hole, each clamping mechanism comprises a sliding block, a clamping plate and a pressure spring, a sliding hole is formed in the tail shell, and an included angle is formed between the length direction of the sliding hole and the horizontal direction; the sliding block is positioned in the sliding hole and can be connected with the sliding hole in a sliding way; the clamping plate fixing sliding block is close to one side of the axis of the conical hole; the pressure spring level sets up its one end and the slider is fixed, on the other end is fixed in the tail-shell lateral wall, the distance between two splint reduces when the slider slides to the bell mouth.

The further technical scheme is as follows: a check ring is fixed between the clamping mechanism and the tapered hole in the tail shell, an elastic block is arranged between the check ring and the clamping piece, and the elastic block is fixed on the check ring.

The further technical scheme is as follows: the elastic block is made of rubber materials.

The further technical scheme is as follows: and limiting plates are fixed at two ends of the sliding block.

The further technical scheme is as follows: a plurality of inverted teeth are fixed on the clamping plate.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

in the utility model, the tail shell is fixed at the tail part of the anchorage device body, clamping mechanisms are symmetrically arranged at two sides of the axis of the tapered hole in the tail shell, each clamping mechanism comprises a slider, a clamping plate and a pressure spring, a sliding hole is arranged on the tail shell, the length direction of the sliding hole forms an included angle with the horizontal direction, the slider is positioned in the sliding hole and can be slidably connected with the sliding hole, the clamping plate fixing slider is close to one side of the axis of the tapered hole, one end of the pressure spring is horizontally arranged to be fixed with the slider, the other end of the pressure spring is fixed on the side wall of the tail shell, the distance between the two clamping plates is reduced when the slider slides towards the tapered hole, when a steel strand passes through the tapered hole and extends from the clamping plate to the two clamping plates, the clamping plates can be pushed to move until the steel strand is positioned between the two clamping plates, the two clamping plates are always contacted with the steel strand, when the steel strand has a pulling force towards the direction of the tapered hole, the steel strand can drive the two clamping plates to move towards the direction of the tapered hole, the steel strand can be clamped by the two clamping plates, even if the clamping piece is not matched with the conical hole in place, the connection strength of the steel strand and the anchor body can be ensured.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is the limiting plate structure schematic diagram of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1 and 2, the single-hole anchor for slow-bonding prestress construction comprises an anchor body 11 and a clamping piece 12, wherein the anchor body 11 is provided with a tapered hole 13, the clamping piece 12 is positioned in the tapered hole 13, a tail shell 14 is fixed at the tail part of the anchor body 11, clamping mechanisms are symmetrically arranged at two sides of the axis of the tapered hole 13 in the tail shell 14, each clamping mechanism comprises a sliding block 15, a clamping plate 16 and a pressure spring 17, a sliding hole 18 is formed in the tail shell 14, and an included angle is formed between the length direction of the sliding hole 18 and the horizontal direction; the sliding block 15 is positioned inside the sliding hole 18 and is connected with the sliding hole in a sliding way; the clamping plate 16 fixes one side of the sliding block 15 close to the axis of the tapered hole 13; the pressure spring 17 is horizontally arranged, one end of the pressure spring is fixed with the sliding block 15, the other end of the pressure spring is fixed on the side wall of the tail shell 14, and the distance between the two clamping plates 16 is reduced when the sliding block 15 slides towards the tapered hole 13.

During the use, when steel strand wires passed bell mouth 13 and extended to two splint 16 from clamping piece 12, can promote two splint 16 and remove and separate, final steel strand wires can be in between two splint 16, and splint 16 can be the arc structure for match with the steel strand wires shape, and when applying the pulling force to steel strand wires, steel strand wires can drive clamping piece 12 and agree with to bell mouth 13, and when splint 16 removed to bell mouth 13 direction simultaneously, thereby the distance between two splint 16 can reduce and press from both sides tight steel strand wires.

In the utility model, the tail shell 14 is fixed on the tail part of the anchorage device body 11, the clamping mechanisms are symmetrically arranged on the two sides of the axis of the taper hole 13 in the tail shell 14, each clamping mechanism comprises a slider 15, a clamping plate 16 and a pressure spring 17, the tail shell 14 is provided with a slide hole 18, the length direction of the slide hole 18 forms an included angle with the horizontal direction, the slider 15 is positioned in the slide hole 18 and can be connected with the slide hole, the clamping plate 16 fixes one side of the slider 15 close to the axis of the taper hole 13, the pressure spring 17 is horizontally arranged, one end of the pressure spring is fixed with the slider 15, the other end of the pressure spring is fixed on the side wall of the tail shell 14, when the slider 15 slides towards the taper hole 13, the distance between the two clamping plates 16 is reduced, when a steel strand passes through the taper hole 13 and extends from the clamping plate 12 to the two clamping plates 16, the clamping plates 16 can be pushed to move until the steel strand is positioned between the two clamping plates 16, the two clamping plates 16 are always contacted with the steel strand, when the tensile force of the steel strand has the direction of the taper hole 13, the steel strand wires can drive two splint 16 to move to bell mouth 13 direction, and two splint 16 just can press from both sides tight steel strand wires, even clamping piece 12 does not target in place with bell mouth 13 cooperation, also can guarantee the joint strength of steel strand wires and ground tackle body 11.

A retainer ring 19 is fixed between the clamping mechanism and the tapered hole 13 in the tail shell 14, an elastic block 20 is arranged between the retainer ring 19 and the clamping piece 12, the elastic block 20 is fixed on the retainer ring 19, and the retainer ring 19 and the elastic block 20 are arranged to prevent the clamping piece 12 from being separated from the tapered hole 13.

The elastic block 20 is made of rubber material, and the rubber material has elasticity.

Limiting plates 21 are fixed at two ends of the sliding block 15, so that the sliding block 15 can stably slide in the sliding hole 18.

A plurality of inverted teeth are fixed on the clamping plate 16, and the friction force between the steel strand and the clamping plate 16 is improved. The above description is only the preferred embodiment of the present invention.

Claims

1. The utility model provides a slow bonding is haplopore ground tackle for prestressing force construction, includes ground tackle body (11) and clamping piece (12), ground tackle body (11) have bell mouth (13), clamping piece (12) are located bell mouth (13), its characterized in that: a tail shell (14) is fixed at the tail part of the anchor device body (11), clamping mechanisms are symmetrically arranged on two sides of the axis of the tapered hole (13) in the tail shell (14), each clamping mechanism comprises a sliding block (15), a clamping plate (16) and a pressure spring (17), a sliding hole (18) is formed in the tail shell (14), and an included angle is formed between the length direction of each sliding hole (18) and the horizontal direction; the sliding block (15) is positioned inside the sliding hole (18) and can be connected with the sliding hole in a sliding mode; the clamping plate (16) fixes one side of the sliding block (15) close to the axis of the conical hole (13); the pressure spring (17) is horizontally arranged, one end of the pressure spring is fixed with the sliding block (15), the other end of the pressure spring is fixed on the side wall of the tail shell (14), and the distance between the two clamping plates (16) is reduced when the sliding block (15) slides towards the tapered hole (13).

2. The single-hole anchor for retarded adhesive prestress construction according to claim 1, wherein: a check ring (19) is fixed between the clamping mechanism and the tapered hole (13) in the tail shell (14), an elastic block (20) is arranged between the check ring (19) and the clamping piece (12), and the elastic block (20) is fixed on the check ring (19).

3. The single-hole anchor for retarded adhesive prestress construction according to claim 2, wherein: the elastic block (20) is made of rubber materials.

4. The single-hole anchor for retarded adhesive prestress construction according to claim 1, wherein: and limiting plates (21) are fixed at two ends of the sliding block (15).

5. The single-hole anchor for retarded adhesive prestress construction according to claim 1, wherein: a plurality of inverted teeth are fixed on the clamping plate (16).