High-strength prestressed anchorage device with sealing structure

Abstract

This utility model discloses a high-strength prestressed anchor with a sealed structure, relating to the field of anchor technology. It addresses the problem of corrosion in anchors located outside concrete after long-term exposure, which endangers structural safety. The anchor includes an anchor plate, a working anchor plate on the left side of the anchor plate, and a corrugated pipe and spiral reinforcement on the right side of the anchor plate. A protective mechanism for protecting the working anchor plate is provided on the left side of the anchor plate. This utility model protects the working anchor plate by screwing a protective cover with a threaded ring. The cooperation between sealing groove one and sealing ring one, and sealing groove two and sealing ring two, improves the sealing performance between the protective cover and the threaded ring, and between the protective cover and the anchor plate. A piston rod drives a piston plate to move, extracting air from the protective cover and creating a pseudo-vacuum state inside, further improving the sealing effect of the protective cover on the working anchor plate.

Description

Technical Field

[0001] This utility model relates to the field of anchor technology, specifically a high-strength prestressed anchor with a sealed structure. Background Technology

[0002] Prestressed anchorages are permanent anchoring devices used in prestressed concrete structures to maintain the tension of prestressed tendons and transfer it to the concrete. Through anchorages, prestressed tendons can be reliably anchored in the concrete structure after tensioning, thereby applying prestress to the concrete and improving the structure's load-bearing capacity and crack resistance.

[0003] When existing prestressed anchorages are in use, the anchor plate and working anchor plate are exposed to the outside of the concrete and lack effective sealing and protection measures. After long-term contact with the outside air, the anchorage, prestressed steel strands and bolt components are prone to corrosion, which leads to the loss of prestress and failure of the anchorage, seriously endangering structural safety and posing a significant safety hazard.

[0004] Therefore, a high-strength prestressed anchor with a sealed structure is needed to solve the problem of corrosion caused by long-term exposure of the anchor located outside the concrete in the existing technology, which endangers the structural safety. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength prestressed anchor with a sealed structure to solve the problem in the prior art where the anchor located outside the concrete corrodes after long-term exposure, thereby endangering structural safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength prestressed anchor with a sealed structure, comprising an anchor plate, a working anchor plate disposed on the left side of the anchor plate, and a corrugated pipe and a spiral reinforcement disposed on the right side of the anchor plate. The working anchor plate has steel strands passing through the corrugated pipe fixed inside by clamps. A protective mechanism for protecting the working anchor plate is provided on the left side of the anchor plate. The protective mechanism includes a threaded ring coaxially mounted on the left side of the anchor plate, a sealing groove coaxially opened on the left side of the threaded ring, a protective cover threaded onto the threaded ring to protect the working anchor plate, a sealing ring installed inside the protective cover to improve the sealing effect, and a vacuuming assembly located on the left side of the protective cover for performing vacuuming operations.

[0007] It should be noted in the solution that the vacuum assembly includes a piston cylinder, a piston plate that is slidably installed inside the piston cylinder for gas extraction, a piston rod that is coaxially installed on the left side of the piston plate and slides through the left side of the piston cylinder, and a one-way valve installed outside the piston cylinder for exhaust.

[0008] It is worth noting that a second sealing groove is coaxially provided on the left side of the anchor plate, and a second sealing ring for improving sealing is abutted inside the second sealing groove.

[0009] Furthermore, it should be noted that a hollow hexagonal block for rotating the protective cover is fixedly connected to the center of the left side of the protective cover. A threaded rubber plug is installed inside the hollow hexagonal block, and an exhaust pipe for gas flow is coaxially installed inside the threaded rubber plug.

[0010] In a preferred embodiment, the first sealing ring is inserted into the first sealing groove, the right side of the protective cover is connected to the second sealing ring, and the piston cylinder is connected to the threaded rubber plug.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The working anchor plate is protected by screwing the protective cover and the threaded ring together. The cooperation between sealing groove one and sealing ring one, and sealing groove two and sealing ring two, improves the sealing performance between the protective cover and the threaded ring, and between the protective cover and the anchor plate. The piston rod drives the piston plate to move, which extracts the air from the protective cover and makes the inside of the protective cover a pseudo-vacuum state, further improving the sealing effect of the protective cover on the working anchor plate. This effectively avoids the problem of corrosion of the anchor parts located outside the concrete after long-term exposure, which would endanger the structural safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the working anchor plate structure of this utility model; Figure 3 This is a front view cross-sectional structural diagram of the protective cover of this utility model; Figure 4 This is a front view cross-sectional structural diagram of the piston cylinder of this utility model.

[0013] The following are the labels in the diagram: 1. Anchor plate; 2. Working anchor plate; 3. Corrugated pipe; 4. Spiral reinforcement; 5. Steel strand; 6. Protective mechanism; 61. Threaded ring; 62. Sealing groove one; 63. Protective cover; 64. Sealing ring one; 7. Vacuum assembly; 71. Piston cylinder; 72. Piston plate; 73. Piston rod; 74. One-way valve; 8. Sealing groove two; 9. Sealing ring two; 10. Hollow hexagonal block; 11. Threaded rubber plug; 12. Vacuum pipe. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example: Figures 1-4 As shown, this utility model provides a technical solution, including an anchor plate 1, a working anchor plate 2 disposed on the left side of the anchor plate 1, and a corrugated pipe 3 and a spiral reinforcement 4 disposed on the right side of the anchor plate 1. The working anchor plate 2 has a steel strand 5 passing through the corrugated pipe 3 fixed inside by a clamp. A protective mechanism 6 for protecting the working anchor plate 2 is provided on the left side of the anchor plate 1. The protective mechanism 6 includes a threaded ring 61 coaxially mounted on the left side of the anchor plate 1, a sealing groove 62 coaxially opened on the left side of the threaded ring 61, a protective cover 63 threaded onto the threaded ring 61 to protect the working anchor plate 2, a sealing ring 64 installed inside the protective cover 63 to improve the sealing effect, and a vacuuming assembly 7 set on the left side of the protective cover 63 for performing vacuuming operations.

[0016] Specifically, the protective cover 63 is rotated under the action of the thread to make it threadedly connected with the threaded ring 61. During the connection process, the sealing ring 64 fixed on the inner surface of the protective cover 63 is gradually inserted into the sealing groove 62. When the protective cover 63 and the threaded ring 61 are fully connected, the sealing ring 64 and the sealing groove 62 are inserted into each other, which improves the sealing performance between the protective cover 63 and the threaded ring 61. The protective cover 63 protects the working anchor plate 2 and prevents the working anchor plate 2 from rusting.

[0017] Further as Figure 1 and Figure 4 As shown, it is worth noting that the vacuum assembly 7 includes a piston cylinder 71, a piston plate 72 slidably installed inside the piston cylinder 71 for gas extraction, a piston rod 73 coaxially installed on the left side of the piston plate 72 and slidingly passing through the left side of the piston cylinder 71, and a one-way valve 74 installed outside the piston cylinder 71 for exhaust.

[0018] Specifically, pulling the piston rod 73 causes the piston plate 72 to move inside the piston cylinder 71, drawing out the air inside the protective cover 63 and discharging it through the one-way valve 74, creating a pseudo-vacuum state inside the protective cover 63, further improving the sealing effect and strengthening the protective cover 63's protection of the working anchor plate 2.

[0019] Further as Figure 1 , Figure 2 and Figure 3As shown, it is worth noting that a sealing groove 2 8 is coaxially provided on the left side of the anchor plate 1, and a sealing ring 2 9 for improving sealing is abutted inside the sealing groove 2 8.

[0020] Specifically, when the sealing ring 9 is located inside the sealing groove 2 8, the sealing performance at the connection between the protective cover 63 and the anchor plate 1 is enhanced by the connection and cooperation between the sealing groove 2 8 and the sealing ring 2 9.

[0021] Further as Figure 1 , Figure 3 and Figure 4 As shown, it is worth noting that a hollow hexagonal block 10 for rotating the protective cover 63 is fixedly connected to the center of the left side of the protective cover 63. A threaded rubber plug 11 is installed inside the hollow hexagonal block 10, and an exhaust pipe 12 for gas circulation is coaxially installed inside the threaded rubber plug 11.

[0022] Specifically, the staff uses tools to clamp and rotate the hollow hexagonal block 10 to facilitate screwing the protective cover 63 onto the threaded ring 61. Then, the threaded rubber plug 11 is threaded into the hollow hexagonal block 10 to make the inside of the protective cover 63 sealed. Under the action of the vacuum assembly 7, the air inside the protective cover 63 is extracted through the air extraction pipe 12.

[0023] Further as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it is worth noting that the sealing ring 64 is inserted into the sealing groove 62, the right side of the protective cover 63 is connected to the sealing ring 9, and the piston cylinder 71 is connected to the threaded rubber plug 11.

[0024] Specifically, sealing ring 64 is inserted into sealing groove 62. The cooperation between sealing ring 64 and sealing groove 62 improves the sealing performance between protective cover 63 and threaded ring 61. The outer right side wall of protective cover 63 is connected to sealing ring 9. With the cooperation between sealing ring 9 and sealing groove 8, the sealing performance at the connection between protective cover 63 and anchor plate 1 is improved. Piston cylinder 71 is connected to threaded rubber plug 11, which facilitates the extraction of air from protective cover 63 by moving piston plate 72 in conjunction with air extraction pipe 12.

[0025] In summary: When using this prestressed anchor, after installing the device in a suitable position, the operator uses tools to clamp the hollow hexagonal block 10, aligns the protective cover 63 with the threaded ring 61, and rotates it. Under the action of the threads, the protective cover 63 and the threaded ring 61 are screwed together. During this process, the first sealing ring 64 gradually moves towards the first sealing groove 62, and the second sealing ring 9 gradually moves towards the second sealing groove 8. When the protective cover 63 and the threaded ring 61 are fully connected, the first sealing ring 64 is fully inserted into the first sealing groove 62, and the second sealing ring 9 is fully inserted into the second sealing groove 8, thus achieving a sealed connection between the threaded ring 61 and the protective cover 63, as well as a sealed connection between the protective cover 63 and the anchor plate 1. Then... Under the action of the thread, the threaded rubber plug 11 is inserted into the hollow hexagonal block 10 to complete the installation of the piston cylinder 71, and at the same time, the protective cover 63 is in a closed state. Then, the worker pulls the piston rod 73 to move the piston plate 72. The piston plate 72 draws out the air inside the protective cover 63 and discharges it through the one-way valve 74. With the repeated movement of the piston plate 72, the inside of the protective cover 63 is made into a pseudo-vacuum state, which improves the sealing effect of the protective cover 63 on the working anchor plate 2 and prevents the working anchor plate 2 located outside the concrete from rusting after long-term exposure. This prevents the anchor prestress loss and failure and effectively avoids the problem of the anchor located outside the concrete rusting after long-term exposure, which endangers the structural safety.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-strength prestressed anchor with a sealed structure, comprising an anchor plate (1), a working anchor plate (2) disposed on the left side of the anchor plate (1), and a corrugated pipe (3) and a spiral reinforcement (4) disposed on the right side of the anchor plate (1), wherein a steel strand (5) passing through the corrugated pipe (3) is fixed inside the working anchor plate (2) by a clamp, characterized in that: The anchor plate (1) is provided with a protective mechanism (6) on the left side for protecting the working anchor plate (2). The protective mechanism (6) includes a threaded ring (61) coaxially mounted on the left side of the anchor plate (1), a sealing groove (62) coaxially opened on the left side of the threaded ring (61), a protective cover (63) threaded on the threaded ring (61) for protecting the working anchor plate (2), a sealing ring (64) installed inside the protective cover (63) for improving the sealing effect, and a vacuuming assembly (7) set on the left side of the protective cover (63) for performing vacuuming operations.

2. The high-strength pre-stressed anchorage device with sealing structure according to claim 1, characterized in that: The vacuum assembly (7) includes a piston cylinder (71), a piston plate (72) slidably installed inside the piston cylinder (71) for gas extraction, a piston rod (73) coaxially installed on the left side of the piston plate (72) and sliding through the left side of the piston cylinder (71), and a one-way valve (74) installed outside the piston cylinder (71) for exhaust.

3. The high-strength, pre-stressed anchorage system with a sealing structure according to claim 2, characterized in that: The anchor plate (1) has a sealing groove (8) coaxially formed on the left side, and a sealing ring (9) for improving sealing is abutted inside the sealing groove (8).

4. The high-strength, pre-stressed anchorage system with a sealing structure according to claim 3, characterized in that: A hollow hexagonal block (10) for rotating the protective cover (63) is fixedly connected at the center of the left side of the protective cover (63). A threaded rubber plug (11) is installed in the hollow hexagonal block (10). A gas extraction pipe (12) for gas flow is coaxially installed in the threaded rubber plug (11).

5. The high-strength, pre-stressed anchorage system with a sealing structure according to claim 4, characterized in that: The sealing ring one (64) is inserted into the sealing groove one (62), the right side of the protective cover (63) is connected to the sealing ring two (9), and the piston cylinder (71) is connected to the threaded rubber plug (11).

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