Combined prestressed anchorage device

Abstract

The utility model discloses a combined prestressed anchorage device which comprises an anchor plate and a sleeve, and a threaded groove is formed in the surface of the anchor plate. According to the utility model, the locking cylinder, the horn mouth and the locking rod are adopted, during working, the anchor plate is fixedly connected with a component, the steel strand penetrates through the sleeve, prestress is obtained through tensioning of the jack, then, a worker can plug the clamping piece between the sleeve and the steel strand, and the clamping piece pushes the locking rod to move outwards along with continuous entering of the clamping piece; after the locking rod is aligned with the locking groove, the locking cylinder can be rotated, the horn mouth of the locking cylinder moves to push the locking rod to be inserted into the locking groove and push the locking rod to tightly abut against the clamping piece, then the steel strand is tightly abutted, prestress attenuation caused by slippage of the steel strand is avoided, and the installation stability and convenience are improved; and a worker only needs to rotate the single locking cylinder through the wrench to complete the operation, so that the use convenience is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed anchor devices, in particular to a combined prestressed anchor device. Background Technique

[0002] An anchor device is a permanent anchoring device used in prestressed concrete. It is an anchoring device in a post-tensioned structure or component to maintain the tension of the prestressed tendon and transfer it to the interior of the concrete, also known as a prestressed anchor device. After retrieval, it is found that the publication number is CN219931415U, and the name is a new type of combined prestressed anchor device. This application points out the problems that the previous installation method is relatively troublesome, time-consuming and laborious, and the use effect is not ideal enough. Through the anchor backing plate, spiral reinforcement, corrugated pipe, working anchor plate, wedge-shaped grip, half-anchor plate and bolts, the purpose of facilitating the installation of the prestressed anchor device is achieved.

[0003] The existing technology has the following problems:

[0004] 1. The main function of the jack is to tension the steel strand, so that the steel strand generates stress to form prestress. Therefore, the jack is essential. Otherwise, it is difficult to change the stress of the steel strand and it is difficult to meet the prestress requirements. The installation of the half-anchor plate is also difficult to change the stress of the steel strand, and there are certain problems in use. At the same time, multiple bolts need to be installed for the installation of the half-anchor plate. Under the obstruction of the jack, it is difficult to install and fix the lateral bolts, and there is inconvenience in use. In addition, the barbs are difficult to penetrate into the steel strand. Even if they can pass through the steel strand, they will cause structural damage to the steel strand, which is not conducive to its stable fixation. At the same time, the number of holes in the half-anchor plate cannot be adjusted, and there is also inconvenience in adjustment and use, and further improvement can be made.

[0005] Therefore, we propose a combined prestressed anchor device to solve the above drawbacks. Content of the Utility Model

[0006] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a combined prestressed anchor device is proposed.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme: a combined prestressed anchor device, including an anchor plate and a sleeve. The surface of the anchor plate is provided with a threaded groove. One end of the sleeve is provided with a second external thread, and the second external thread is in threaded cooperation with the threaded groove. The outer surface of the other end of the sleeve is provided with a first external thread. A locking cylinder is threadedly sleeved on the outside of the sleeve, and one end of the locking cylinder is provided with a flared opening. The anchor plate is located inside the sleeve and is connected through the steel strand. A wedge-shaped grip is inserted between the outer side of the steel strand and the sleeve, and a locking groove is provided on the outer wall of the wedge-shaped grip. The other end of the sleeve is connected through a locking rod, and the locking rod is located inside the flared opening. The outer end of the locking rod is provided with an inclined opening.

[0008] Preferably, sawteeth are provided on the inner surface of the clip, and two clips are arranged.

[0009] Preferably, one end of the clip is beveled, and the clip is made of steel.

[0010] Preferably, the slope of the flared opening is the same as that of the beveled opening.

[0011] Preferably, the transverse section of the locking rod is rectangular, and the material of the locking rod is the same as that of the clip.

[0012] Preferably, a corrugated pipe is sleeved outside the steel strand, and a spiral rib is sleeved outside the corrugated pipe.

[0013] Preferably, multiple groups of sleeves are arranged.

[0014] Preferably, the vertical section of the outer surface of the locking cylinder is a regular hexagon.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows;

[0016] (1) In the present utility model, a locking cylinder, a flared opening and a locking rod are adopted. During operation, the anchor plate is fixedly connected to the component, the steel strand passes through the sleeve, and prestress is obtained through the tension of the jack. Subsequently, the worker can insert the clip between the sleeve and the steel strand. As the clip continuously enters, the clip pushes the locking rod to move outwards. Until the locking rod aligns with the locking groove, the locking cylinder can be rotated. The flared opening of the locking cylinder moves to push the locking rod into the locking groove, and pushes the locking rod to press the clip to death, thereby pressing the steel strand to death, avoiding the prestress attenuation caused by the slip of the steel strand, improving the stability and convenience of installation. At the same time, a hexagonal structure is provided on the outer wall of the locking cylinder, which is convenient for wrench operation. The worker only needs to rotate a single locking cylinder with a wrench to complete the operation, significantly improving the convenience of use.

[0017] (2) In the present utility model, a detachable sleeve is adopted. The sleeve is threadedly docked with the thread groove through the second external thread. The worker can reasonably adjust the number of sleeves according to the number of steel strands, thereby avoiding the waste of sleeves, reducing the cost investment, and improving the flexibility and convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments.

[0019] Figure 1 It is a schematic external structure diagram of the anchor plate proposed by the present utility model;

[0020] Figure 2 It is a schematic internal structure diagram of a combined prestressed anchor proposed by the present utility model;

[0021] Figure 3 The front view of a combined prestressed anchor proposed by the present utility model;

[0022] Figure 4 The enlarged view of Node A of a combined prestressed anchor proposed by the present utility model.

[0023] Legend:

[0024] 1. Anchor plate; 2. Steel strand; 3. Spiral reinforcement; 4. Bellows; 5. Sleeve; 6. Locking cylinder; 7. Bell mouth; 8. First external thread; 9. Thread groove; 10. Second external thread; 11. Wedge; 12. Locking groove; 13. Sawtooth; 14. Locking rod; 15. Oblique opening. Specific embodiments

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0026] Please refer to Figures 1-4 , a combined prestressed anchor, including an anchor plate 1 and a sleeve 5. A thread groove 9 is provided on the surface of the anchor plate 1. A second external thread 10 is provided at one end of the sleeve 5, and the second external thread 10 is in threaded cooperation with the thread groove 9. A first external thread 8 is provided on the outer surface of the other end of the sleeve 5. A locking cylinder 6 is threadedly sleeved outside the sleeve 5. A bell mouth 7 is provided at one end of the locking cylinder 6. A steel strand 2 penetrates and is connected inside the sleeve 5 through the anchor plate 1. A wedge 11 is inserted between the outer side of the steel strand 2 and the sleeve 5. A locking groove 12 is provided on the outer wall of the wedge 11. A locking rod 14 penetrates and is connected to the other end of the sleeve 5. The locking rod 14 is located inside the bell mouth 7. An oblique opening 15 is provided at the outer end of the locking rod 14.

[0027] In this implementation scheme: When working, the anchor plate 1 is fixedly connected to the component, the steel strand 2 passes through the sleeve 5, and prestress is obtained through the tension of the jack. Subsequently, the worker can insert the wedge 11 between the sleeve 5 and the steel strand 2. As the wedge 11 continuously enters, the wedge 11 pushes the locking rod 14 to move outward. Until the locking rod 14 aligns with the locking groove 12, the locking cylinder 6 can be rotated. The flared mouth 7 of the locking cylinder 6 moves to push the locking rod 14 into the locking groove 12, and pushes the locking rod 14 to hold the wedge 11 firmly, thereby holding the steel strand 2 firmly, avoiding the prestress attenuation caused by the slippage of the steel strand 2, improving the stability and convenience of installation. At the same time, a hexagonal structure is provided on the outer wall of the locking cylinder 6, which is convenient for wrench operation. The worker only needs to rotate a single locking cylinder 6 with a wrench to complete the operation, significantly improving the convenience of use.

[0028] Specifically, serrations 13 are provided on the inner surface of the wedge 11, and two wedges 11 are arranged.

[0029] In this implementation scheme: The serrations 13 improve the friction with the steel strand 2 and improve the clamping stability.

[0030] Specifically, one end of the wedge 11 is a bevel, and the wedge 11 is made of steel.

[0031] In this implementation scheme: The bevel at one end of the wedge 11 facilitates pushing the locking rod 14 to move outward during insertion.

[0032] Specifically, the slope of the flared mouth 7 is the same as the slope of the bevel 15.

[0033] In this implementation scheme: The inner wall of the flared mouth 7 is polished to facilitate the movement of the locking rod 14.

[0034] Specifically, the transverse section of the locking rod 14 is rectangular, and the material of the locking rod 14 is the same as that of the wedge 11.

[0035] In this implementation scheme: The locking rod 14 with a rectangular cross-section avoids the problem that the bevel 15 and the flared mouth 7 cannot be matched due to self-rotation.

[0036] Specifically, a corrugated pipe 4 is sleeved outside the steel strand 2, and a spiral rib 3 is sleeved outside the corrugated pipe 4.

[0037] In this implementation scheme: Both the corrugated pipe 4 and the spiral rib 3 are common structures in the art and will not be elaborated here.

[0038] Specifically, multiple groups of sleeves 5 are arranged.

[0039] In this embodiment: The number of sleeves 5 is the same as the number of steel strands 2. The sleeves 5 are threadedly docked with the thread grooves 9 through the second external threads 10. Workers can reasonably adjust the number of sleeves 5 according to the number of steel strands 2, thereby avoiding waste of sleeves 5, reducing cost investment, and improving the flexibility and convenience of use.

[0040] Specifically, the vertical cross-section of the outer surface of the locking cylinder 6 is a regular hexagon.

[0041] In this embodiment: The outer wall of the locking cylinder 6 is convenient for wrench operation.

[0042] Working principle: During operation, the anchor plate 1 is fixedly connected to the component, and the steel strand 2 passes through the sleeve 5 to obtain prestress through the tension of the jack. Subsequently, the worker can insert the wedge-shaped clip 11 between the sleeve 5 and the steel strand 2. As the wedge-shaped clip 11 continuously enters, the wedge-shaped clip 11 pushes the locking rod 14 to move outwards. Until the locking rod 14 aligns with the locking groove 12, the locking cylinder 6 can be rotated. The flared mouth 7 of the locking cylinder 6 moves to push the locking rod 14 into the locking groove 12 and pushes the locking rod 14 to firmly hold the wedge-shaped clip 11, thereby firmly holding the steel strand 2, avoiding the prestress attenuation caused by the slippage of the steel strand 2, and improving the stability and convenience of installation. At the same time, the outer wall of the locking cylinder 6 is provided with a hexagonal structure, which is convenient for wrench operation. Workers only need to rotate a single locking cylinder 6 with a wrench to complete the operation, significantly improving the convenience of use. At the same time, the sleeves 5 are threadedly docked with the thread grooves 9 through the second external threads 10. Workers can reasonably adjust the number of sleeves 5 according to the number of steel strands 2, thereby avoiding waste of sleeves 5, reducing cost investment, and improving the flexibility and convenience of use.

[0043] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modification examples falling within the scope and boundary of the appended claims, or equivalent forms of such scope and boundary.

Claims

1. A combined prestressed anchor, comprising an anchor plate (1) and a sleeve (5), characterized in that: The surface of the anchor plate (1) is provided with a thread groove (9), one end of the sleeve (5) is provided with a second external thread (10), and the second external thread (10) is threadedly matched with the thread groove (9), and the outer surface of the other end of the sleeve (5) is provided with a first external thread (8), the outer side of the sleeve (5) is threadedly sleeved with a locking cylinder (6), and one end of the locking cylinder (6) is provided with a bell mouth (7), the anchor plate (1) is located inside the sleeve (5) and is connected with a steel strand (2), and a clip (11) is inserted between the outer side of the steel strand (2) and the sleeve (5), and a locking groove (12) is provided on the outer wall of the clip (11), and the other end of the sleeve (5) is connected with a locking rod (14), and the locking rod (14) is located inside the bell mouth (7), and an oblique mouth (15) is provided at the outer end of the locking rod (14).

2. A combined prestressed anchor according to claim 1, characterized in that: The inner surface of the clamping piece (11) is provided with saw teeth (13), and the clamping piece (11) is arranged in two pieces.

3. A combined prestressed anchor according to claim 1, characterized in that: One end of the clip (11) is an inclined surface, and the clip (11) is made of steel.

4. A combined prestressed anchor according to claim 1, characterized in that: The slope of the bell mouth (7) is the same as the slope of the oblique mouth (15).

5. A combined prestressed anchor according to claim 1, characterized in that: The transverse cross section of the locking rod (14) is rectangular, and the material of the locking rod (14) is the same as that of the clip (11).

6. A combined prestressed anchor according to claim 1, characterized in that: The steel strand (2) is sleeved with a corrugated tube (4) on the outside, and the corrugated tube (4) is sleeved with a spiral rib (3) on the outside.

7. A combined prestressed anchor according to claim 1, characterized in that: The sleeves (5) are arranged in multiple groups.

8. A combined prestressed anchor according to claim 1, characterized in that: The vertical cross-section of the outer surface of the locking cylinder (6) is a regular hexagon.

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