Anchor plate assembly for tensioning prestress and tensioning device

Abstract

The utility model discloses an anchor plate assembly for tensioning prestress and a tensioning device. The anchor plate assembly comprises an anchoring sleeve and an anchoring hole penetrating through the anchoring sleeve. The anchoring hole comprises a locking hole and a tensioning hole which are communicated with each other, and a clamping ring for reducing the tensioning hole is formed in the end part of the anchoring sleeve; the anchoring sleeve is sleeved with an anchoring plate arranged in the radial direction of the anchoring sleeve, and a locking structure used for locking the position of the anchoring plate is formed between the anchoring sleeve and the anchoring plate. Compared with the prior art, the anchoring device has the advantages that the anchoring plate is arranged outside the anchoring sleeve, the locking structure is arranged between the anchoring sleeve and the anchoring plate, and the anchoring position of the anchoring sleeve is reinforced under the anchoring action of the anchoring plate, so that the anchoring effect of the anchoring sleeve is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete member tension technology field, concretely relates to a kind of anchor plate assembly and tension device for tensioning prestress. BACKGROUND

[0002] Prestressed anchorage device is applicable to engineering construction process, and is used for the appliance of concrete prestressed tension, is widely used in highway bridge, railway bridge, urban overpass, urban light rail, high-rise building, water conservancy and hydropower dam, port wharf, rock mass slope anchoring, foundation reinforcement, tunnel roof anchoring, prestressed net rack, subway, large hall, warehouse, tower type building, heavy lifting, synovial membrane intermittent propulsion, bridge and tunnel jacking, large container and ship, sleeper, replacement bridge support, bridge and building reinforcement, reinforcing steel engineering, anti-magnetic and anticorrosion engineering, carbon fiber reinforcement, pretensioning beam field construction, external prestress engineering, cable-stayed cable, suspension cable and other project engineering.

[0003] Permanent anchoring device used on concrete can be generally divided into tension end anchorage device and fixed end anchorage device, wherein the tension end anchorage device is installed at the end of prestressed tendon and can tension the anchorage device, and the fixed end anchorage device is installed at the end of prestressed tendon and is usually bought into concrete without anchorage device for tensioning.

[0004] Chinese publication number CN211547403U discloses a kind of for prestressed steel strand fixed end anchorage device reinforcement device, including anchor plate, one side of anchor plate is fixedly connected with anchorage device, both sides of anchorage device are provided with threaded rod, one end on threaded rod is rotatably connected with anchor plate, threaded rod is threadedly sleeved with moving block, both sides of anchorage device are provided with arc-shaped fixed plate, both ends of arc-shaped fixed plate are fixedly connected with locking block, locking rod is arranged between the two locking blocks, locking rod and the two locking blocks are threadedly connected, arc-shaped fixed plate is fixedly connected with fixed plate on the side away from anchorage device, recess is arranged on the side of fixed plate, support rod is fixedly connected in recess, sliding block is slidably sleeved on support rod.

[0005] The above-mentioned reinforcement device realizes the reinforcement and fixation of the anchorage device by clamping the anchorage device with the two arc-shaped fixed plates, but the overall structure is complex during the reinforcement process, and the overall reinforcement degree is low because the position of the moving block needs to be adjusted by rotating the threaded rod, and the anchorage device is reinforced by controlling the movement of the arc-shaped fixed plate through the connecting rod, so it is difficult to effectively reinforce the anchorage device. UTILITY MODEL CONTENTS

[0006] The utility model overcomes the defects in the prior art and provides an anchor plate assembly and tension device for tensioning prestress, which has a simple structure and stable anchoring.

[0007] To achieve the above-mentioned utility model purposes, the utility model discloses the following technical scheme: a kind of anchor plate assembly for tensioning prestress, including anchoring sleeve and the anchoring hole being set through anchoring sleeve;The anchoring hole includes the locking hole and the tensioning hole being communicated, and the anchoring sleeve end portion is formed with the clamping ring for reducing the diameter of tensioning hole;The anchoring sleeve is sleeved with the anchoring plate being set along the radial direction of anchoring sleeve, and the anchoring sleeve and anchoring plate are formed with locking structure for locking the position of anchoring plate.

[0008] As a preferred scheme of the utility model, the locking structure is the external thread structure formed on the outer wall of anchoring sleeve and the internal thread structure formed on the inner ring of anchoring plate.

[0009] As a preferred scheme of the utility model, the external thread structure is set along the axial direction of anchoring sleeve, and the external thread structure is formed on the entire outer wall of anchoring sleeve.

[0010] As a preferred scheme of the utility model, the locking structure is the limiting stop ring formed on the outer wall of anchoring sleeve, and the outer wall of anchoring plate is in abutment with the limiting stop ring.

[0011] As a preferred scheme of the utility model, the limiting stop ring is set along the radial direction of anchoring sleeve.

[0012] As a preferred scheme of the utility model, the anchoring plate is the integral structure formed on the outer wall of anchoring sleeve.

[0013] As a preferred scheme of the utility model, the middle part of the clamping ring is formed with the through hole being communicated with the tensioning hole, and the hole diameter size of the through hole is less than the hole diameter size of the tensioning hole.

[0014] As a preferred scheme of the utility model, the locking hole, the tensioning hole and the through hole are concentrically arranged.

[0015] A tensioning device based on anchor plate assembly, characterized by comprising a mold frame and a fixed tensioning plate installed at the end of the mold frame, a tensioning screw rod is installed through the fixed tensioning plate in the middle of the fixed tensioning plate, a movable tensioning plate is installed in the mold frame and is screw-connected with the tensioning screw rod, a plurality of tensioning steels are anchored on the movable tensioning plate, a formwork is installed at the end of part of the tensioning steels, and the anchor plate assembly is located at the connection position of the formwork and the tensioning steels.

[0016] As a preferred scheme of the utility model, the tensioning screw rod is installed with the locking nut being in abutment with the fixed tensioning plate.

[0017] Compared with the prior art, the anchor sleeve is fixed on the anchor plate, the anchor position of the anchor sleeve is reinforced under the self-anchoring effect of the anchor plate, and therefore the anchoring effect of the anchor sleeve is ensured.

[0018] The end part of the upset tensioned steel bar is tightened through the clamping ring in the anchor sleeve, the relative locking of the position of the anchor sleeve is ensured under the locking effect of the movable tensioning plate, after the pouring of the concrete, the anchor assembly is pre-buried at the end part of the prestressed member, the tensioning position of the tensioned steel bar is anchored under the effect of the anchor sleeve and the anchor plate being solidly connected with the concrete, and therefore the prestress loss at the end part of the prestressed member is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the utility model;

[0020] Figure 2 is a front view of the utility model;

[0021] Figure 3 is a sectional view of embodiment 1;

[0022] Figure 4 is a sectional view of embodiment 2;

[0023] Figure 5 is a sectional view of embodiment 3;

[0024] Figure 6 is a structural schematic view of a tensioning device;

[0025] Figure 7 is a structural schematic view of a tensioning position

[0026] Anchor sleeve 1, clamping ring 11, limiting baffle ring 12, anchor hole 2, tensioning hole 21, locking hole 22, through connecting hole 23, anchor plate 3, outer thread structure 4, inner thread structure 5, mold frame 6, tensioned steel bar 61, fixed tensioning plate 7, tensioning wire rod 8, locking nut 81, movable tensioning plate 9, mold plate 91, anchor plate assembly 10. DETAILED DESCRIPTION

[0027] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0028] As Figures 1-7As shown, an anchor plate assembly for tensioning prestress includes an anchor sleeve 1 and an anchor hole 2 penetrating the anchor sleeve 1; the anchor hole 2 includes a locking hole 22 and a tensioning hole 21 that are connected to each other, and a snap ring 11 for reducing the diameter of the tensioning hole 21 is formed inside the end of the anchor sleeve 1; an anchor plate 3 is sleeved on the anchor sleeve 1 and arranged in the radial direction of the anchor sleeve 1, and a locking structure for locking the position of the anchor plate 3 is formed between the anchor sleeve 1 and the anchor plate 3.

[0029] The anchoring sleeve 1 is a straight sleeve structure. The anchoring hole 2 is set along the axial direction of the anchoring sleeve 1, and the center line of the anchoring hole 2 is concentric with the center line of the anchoring sleeve 1. The locking hole 22 and the tensioning hole 21 are distributed along the axial direction of the anchoring sleeve 1, and the locking hole 22 and the tensioning hole 21 correspond to the opposite ends of the anchoring sleeve 1, respectively.

[0030] The locking hole 22 is an internal thread structure formed on the inner wall of the anchor sleeve 1. It can realize the locking connection between the bolt and the anchor sleeve 1 under the action of the bolt. The thread structure at the end of the locking hole 22 is interrupted, so the bolt can be locked at the end of the locking hole 22.

[0031] The locking mechanism is used to lock the axial position of the anchor plate 3 on the anchor sleeve 1, and the anchor plate 3 is used to achieve its own anchoring and to achieve anchoring of the anchor sleeve 1 under the transmission action of the locking mechanism.

[0032] Example 1: As Figure 3 As shown, the locking structure consists of an external thread structure 4 formed on the outer wall of the anchor sleeve 1 and an internal thread structure 5 formed on the inner ring of the anchor plate 3. The anchor plate 3 and the anchor sleeve 1 are connected by threads, and under the action of the cooperating external thread structure 4 and internal thread structure 5, the axial position of the anchor plate 3 on the anchor sleeve 1 can be adjusted according to actual needs.

[0033] In actual use, the anchor plate 3 is rotated to the required axial position of the anchor sleeve 1 under the action of the external thread structure 4 and the internal thread structure 5. Under the action of the threads of the external thread structure 4 and the internal thread structure 5, the anchor plate 3 is locked on the anchor sleeve 1 under the action of the threads.

[0034] The external thread structure 4 is provided along the axial direction of the anchor sleeve 1, and the external thread structure 4 is formed on the entire outer wall of the anchor sleeve 1. Under the action of the external thread structure 4 on the entire outer wall of the anchor sleeve 1, the anchor plate 3 can be locked at different positions of the anchor sleeve 1, thereby meeting the anchoring requirements of different situations.

[0035] Example 2: Figure 4As shown, the locking structure is a limiting stop ring 12 formed on the outer wall of the anchoring sleeve 1, the outer wall of the anchoring plate 3 abuts against the limiting stop ring 12, and the limiting stop ring 12 is arranged along the radial direction of the anchoring sleeve 1.

[0036] The limiting stop ring 12 and the clamping ring 11 are located on opposite sides of the anchoring plate 3. In actual use, the clamping ring 11 generates an axial tension on the anchoring sleeve 1, which is counteracted by the abutting force of the limiting stop ring 12 of the anchoring plate 3, thereby preventing the axial movement of the anchoring sleeve 1.

[0037] Embodiment three: as shown, Figure 5 The anchoring plate 3 is an integral structure formed on the outer wall of the anchoring sleeve 1. In actual use, the clamping ring 11 generates an axial tension on the anchoring sleeve 1, which is counteracted by the abutting force of the limiting stop ring 12 of the anchoring plate 3, thereby preventing the axial movement of the anchoring sleeve 1.

[0038] A through hole 23 is formed in the middle of the clamping ring 11 and communicates with the tension hole 21. The diameter of the through hole 23 is smaller than that of the tension hole 21. The tension hole 21 is used to install the upset head of the steel bar, and the steel bar passes through the through hole 23. The anchoring sleeve 1 is used to tension the position of the steel bar head, and the anchoring plate 3 is used to anchor the position of the anchoring sleeve 1.

[0039] The locking hole 22, the tension hole 21 and the through hole 23 are concentrically arranged.

[0040] A tensioning device, comprising a mold frame 6 and a fixed tensioning plate 7 installed at the end of the mold frame 6. A tensioning screw 8 is arranged through the fixed tensioning plate 7 and is installed in the middle of the fixed tensioning plate 7. An active tensioning plate 9 is installed in the mold frame 6 and is threadedly connected with the tensioning screw 8. A plurality of tensioning steel bars 61 are anchored on the active tensioning plate 9. A formwork 91 is installed at the end of part of the tensioning steel bars 61. An anchor plate assembly is located at the connection between the formwork 91 and the tensioning steel bars 61.

[0041] A locking nut 81 is installed on the tensioning screw 8 and abuts against the fixed tensioning plate 7.

[0042] In actual use, when it is necessary to anchor the prestressed member of the hollow structure, the active tensioning plate 9 and the formwork 91 are arranged at the end of the required prestressed member. The anchor plate assembly 10 is located between the active tensioning plate 9 and the formwork 91, and is installed on the formwork 91. The tensioning steel bars 61 between the active tensioning plate 9 and the formwork 91 are connected with the active tensioning plate 9 and the anchor plate assembly 10 at the same time. The anchor plate assembly 10 is fixedly connected to the formwork 91 by bolts.

[0043] The tensioning of the tensioning steel bars 61 is driven by the movement of the movable tensioning plate 9, so that the tensioning steel bars 61 provide axial tension to the anchor plate assembly 10 and the formwork 91, the anchor plate assembly 10 realizes the tensioning of the tensioning steel bars 61 under the tensioning effect on the steel bar heads of the tensioning steel bars 61, and after the concrete is solidified, the rebound of the steel bar heads of the tensioning steel bars 61 is prevented under the action of the anchor plate 3 and the solidified concrete after the formwork 91 is removed, so as to ensure the stable tensioning effect of the tensioning steel bars 61.

[0044] The tensioning device of the present application adopts the pre-tensioning method, when the movable tensioning plate 9 tensions the tensioning steel bars 61 through the anchor plate assembly 10, the concrete is poured in the mold frame 6, and the poured concrete is vibrated and tamped, at this time, the anchor plate assembly 10 is embedded in the concrete, after the concrete is solidified, the anchor plate assembly 10 is correspondingly arranged at the end of the prestressed member, and at this time, the anchor plate 3 is fixedly connected in the prestressed member, under the action of the anchor plate 3, the contact area between the anchor plate assembly 10 and the prestressed member is increased, so as to prevent the anchor plate assembly 10 from being retracted under the action of the steel bar retraction, and ensure that the anchor plate assembly 10 is always arranged at the end of the prestressed member to ensure the prestress of the end of the prestressed member.

[0045] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application; therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0046] Although the terms such as anchor sleeve 1, clamping ring 11, limiting ring 12, anchor hole 2, tensioning hole 21, locking hole 22, through hole 23, anchor plate 3, external thread structure 4, internal thread structure 5, mold frame 6, tensioning steel bar 61, fixed tensioning plate 7, tensioning wire rod 8, locking nut 81, movable tensioning plate 9, formwork 91, anchor plate assembly 10, etc. are used more frequently in the drawings, but the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A pre-stressed tensioning anchor plate assembly comprising an anchoring sleeve (1) and an anchoring hole (2) provided through the anchoring sleeve (1); characterized in that, The anchor hole (2) comprises a locking hole (22) and a tension hole (21) in communication, a clamping ring (11) is formed in the end of the anchor sleeve (1) for reducing the tension hole (21); the anchor sleeve (1) is sleeved with an anchor plate (3) arranged along the radial direction of the anchor sleeve (1), and a locking structure is formed between the anchor sleeve (1) and the anchor plate (3) for locking the position of the anchor plate (3).

2. A tendon anchorage assembly according to claim 1, wherein, The locking structure is an external thread structure (4) formed on the outer wall of the anchor sleeve (1) and an internal thread structure (5) formed on the inner ring of the anchor plate (3).

3. A tendon anchorage assembly according to claim 2, wherein the anchorage plate is formed from a single piece of material. The external thread structure (4) is arranged along the axial direction of the anchor sleeve (1), and the external thread structure (4) is formed on the entire outer wall of the anchor sleeve (1).

4. The anchorage plate assembly for tensioning pre-stressed tendons according to claim 1, wherein, The locking structure is a limiting stop ring (12) formed on the outer wall of the anchor sleeve (1), and the outer wall of the anchor plate (3) abuts against the limiting stop ring (12).

5. A tendon anchorage assembly according to claim 4, wherein the anchorage plate is formed from a single piece of material. The limiting stop ring (12) is arranged along the radial direction of the anchor sleeve (1).

6. A tendon anchorage assembly for tensioning a pre-stressed tendon as defined in claim 1, wherein The anchor plate (3) is an integral structure formed on the outer wall of the anchor sleeve (1).

7. The anchorage plate assembly for tensioning pre-stressed tendons according to claim 1, wherein, A penetrating hole (23) is formed in the middle of the clamping ring (11) and communicates with the tension hole (21), and the diameter of the penetrating hole (23) is smaller than that of the tension hole (21).

8. A tendon anchorage assembly according to claim 7, wherein, The locking hole (22), the tension hole (21) and the penetrating hole (23) are concentrically arranged.

9. A tensioning device based on the anchoring plate assembly for tensioning pre-stress according to any one of claims 1-8, characterized in that, The anchor plate assembly comprises a mold frame (6) and a fixed tension plate (7) mounted on the end of the mold frame (6), a tension wire rod (8) is mounted in the middle of the fixed tension plate (7), an active tension plate (9) is mounted in the mold frame (6) and is in threaded connection with the tension wire rod (8), a plurality of tension steel bars (61) are anchored on the active tension plate (9), a formwork (91) is mounted on the end of part of the tension steel bars (61), and the anchor plate assembly is located at the connection between the formwork (91) and the tension steel bars (61).

10. A tensioning device according to claim 9, characterised in that The tension wire rod (8) is provided with a locking nut (81) abutting against the fixed tension plate (7).

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