A type of prestressed anchorage for bridges

Abstract

This utility model relates to a prestressed anchorage for bridges, comprising an anchor plate, an anchor ring, a baffle, and a locking cap. The anchor ring is fixed between the anchor plate and the baffle by several countersunk bolts. The anchor plate has several steel strand anchor holes around its circumference. A receiving hole is provided on the side wall of the anchor plate corresponding to each steel strand anchor hole. The steel strand passes sequentially through the baffle, the anchor ring, and the anchor plate's steel strand anchor holes, then bends and is installed in the receiving hole. The locking cap is threaded onto the side wall of the anchor plate, compressing the steel strand. The anchor ring includes a first anchor ring plate and a second anchor ring plate. The first anchor ring plate is fixed to the anchor plate, and the second anchor ring plate is fixed to the baffle by countersunk bolts. Connecting lugs are provided on the connecting end faces of the first and second anchor ring plates, and are fixedly connected by fastening bolts. This utility model features a simple locking structure. After the steel strand passes through the anchor plate, it bends into the receiving hole and is tightened by the threaded locking cap. The fixing operation is simple and convenient, saves on parts, and provides good anchoring effect.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge construction, and in particular to a prestressed anchorage for bridges. Background Technology

[0002] Prestressed anchorages are a type of anchorage used for prestressing concrete during engineering construction. They are commonly used in bridge construction. They are pre-installed and positioned, and then concrete is poured, embedding the anchorages at both ends of the concrete to achieve the tensioning effect.

[0003] After the steel strands of common prestressed anchors pass through the anchor holes, they are usually fixed by clamping assemblies or locking heads. This fixing method is complicated to install and has many parts. In addition, the fixing and locking are not secure enough, and the locking head or clamping assembly is prone to failure. Utility Model Content

[0004] This utility model aims to address the shortcomings of existing technologies by providing a prestressed anchorage for bridges.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A prestressed anchorage for bridges includes an anchor plate, an anchor ring, a baffle, and a locking cap. The anchor ring is fixed between the anchor plate and the baffle by a number of countersunk bolts. The anchor plate has a number of steel strand anchor holes around its circumference. A receiving hole is provided on the side wall of the anchor plate corresponding to each steel strand anchor hole. The steel strand passes through the baffle, the anchor ring, and the steel strand anchor holes of the anchor plate in sequence and is then bent and installed in the receiving hole. The locking cap is locked to the side wall of the anchor plate by threads and compresses the steel strand.

[0007] The anchor ring includes a first anchor ring plate and a second anchor ring plate. The first anchor ring plate and the anchor pad plate, and the second anchor ring plate and the baffle are all fixed by countersunk bolts. Connecting lugs are provided on the connecting end faces of the first anchor ring plate and the second anchor ring plate, and the connecting lugs are fixedly connected by fastening bolts.

[0008] The first and second anchor ring plates have conical holes corresponding to the anchor holes of the steel strands, and conical protective sleeves are installed inside the conical holes. The steel strands pass through the conical protective sleeves.

[0009] The advantages of this utility model are: the locking structure of this utility model is simple. After the steel strand passes through the anchor plate, it is bent into the receiving hole and tightened by the locking cap thread. The fixing operation is simple and convenient, saves parts, and has a good anchoring effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of an anchor plate;

[0012] In the diagram: 1-Anchor plate; 2-Anchor ring; 3-Baffle; 4-Locking cap; 5-Counterhead bolt; 6-Steel strand anchor hole; 7-Accommodation hole; 8-Steel strand; 9-First sealing ring; 10-Second sealing ring;

[0013] 201-First anchor ring plate; 202-Second anchor ring plate; 203-Connecting lug plate; 204-Fasting bolt; 205-Conical protective sleeve;

[0014] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0015] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0016] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] A type of prestressed anchorage for bridges, such as Figures 1 to 2 As shown, it includes anchor plate 1, anchor ring 2, baffle 3, locking cap 4, countersunk bolt 5, steel strand anchor hole 6, receiving hole 7, steel strand 8, first sealing ring 9, and second sealing ring 10.

[0020] Anchor ring 2 is fixed between anchor plate 1 and baffle 3 by several countersunk bolts 5. Anchor plate 1 has several steel strand anchor holes 6 around its circumference. An accommodating hole 7 is provided on the side wall of anchor plate 1 corresponding to each steel strand anchor hole 6. The steel strand 8 passes through baffle 3, anchor ring 2 and steel strand anchor hole 6 of anchor plate 1 in sequence and is then bent and installed in the accommodating hole 7. Locking cap 4 is locked to the side wall of anchor plate 1 by threads and presses the steel strand 8 tightly.

[0021] The anchor ring 2 includes a first anchor ring plate 201 and a second anchor ring plate 202. The first anchor ring plate 201 and the anchor pad plate 1, and the second anchor ring plate 202 and the baffle 3 are all fixed by countersunk bolts 5. The connecting end faces of the first anchor ring plate 201 and the second anchor ring plate 202 are provided with connecting ear plates 203, which are fixedly connected by fastening bolts 204.

[0022] The first anchor ring plate 201 and the second anchor ring plate 202 have conical holes corresponding to the anchor holes 6 of the steel strands, and conical protective sleeves 205 are installed in the conical holes. The steel strands 8 pass through the conical protective sleeves 205.

[0023] The anchor ring 2 adopts a split structure design, which facilitates the installation, removal and maintenance of the conical protective sleeve 205. The conical protective sleeve 205 can protect the steel strand 8 and reduce wear.

[0024] An anchor plate 1 has a first mounting groove on its end face corresponding to the first anchor ring plate 201, and a first sealing ring 9 is provided between the inner wall of the first mounting groove and the first anchor ring plate 201.

[0025] A second mounting groove is provided on the end face of the baffle 3 corresponding to the second anchor ring plate 202, and a second sealing ring 10 is provided between the inner wall of the second mounting groove and the second anchor ring plate 202.

[0026] The locking structure of this utility model is simple. After the steel strand 8 passes through the anchor plate 1, it is bent into the receiving hole 7 and tightened by the thread of the locking cap 4. The fixing operation is simple and convenient, saves parts, and has a good anchoring effect.

[0027] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A bridge prestressing anchor, characterized in that The system includes an anchor plate (1), an anchor ring (2), a baffle (3), and a locking cap (4). The anchor ring (2) is fixed between the anchor plate (1) and the baffle (3) by several countersunk bolts (5). Several steel strand anchor holes (6) are opened on the circumference of the anchor plate (1). A receiving hole (7) is opened on the side wall of the anchor plate (1) corresponding to each steel strand anchor hole (6). The steel strand (8) passes through the baffle (3), the anchor ring (2), and the steel strand anchor hole (6) of the anchor plate (1) in sequence and is then bent and installed in the receiving hole (7). The locking cap (4) is locked on the side wall of the anchor plate (1) by threads and presses the steel strand (8) tightly.

2. The bridge pre-stressing anchorage as claimed in claim 1, wherein, The anchor ring (2) includes a first anchor ring plate (201) and a second anchor ring plate (202). The first anchor ring plate (201) and the anchor pad plate (1), and the second anchor ring plate (202) and the baffle (3) are all fixed by countersunk bolts (5). The connecting end faces of the first anchor ring plate (201) and the second anchor ring plate (202) are provided with connecting ear plates (203), and the connecting ear plates (203) are fixedly connected by fastening bolts (204).

3. A bridge pre-stressing anchorage as claimed in claim 2, wherein, The first anchor ring plate (201) and the second anchor ring plate (202) have conical holes corresponding to the anchor holes (6) of the steel strands, and conical protective sleeves (205) are installed in the conical holes. The steel strands (8) pass through the conical protective sleeves (205).

4. The bridge pre-stressing anchorage as claimed in claim 3, wherein, The end face of the anchor plate (1) is provided with a first mounting groove corresponding to the first anchor ring plate (201), and a first sealing ring (9) is provided between the inner wall of the first mounting groove and the first anchor ring plate (201).

5. A bridge prestressing anchorage according to claim 4, characterised in that, A second mounting groove is provided on the end face of the baffle (3) corresponding to the second anchor ring plate (202), and a second sealing ring (10) is provided between the inner wall of the second mounting groove and the second anchor ring plate (202).

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