Unlocking type anchorage device for concrete structure

Abstract

The utility model relates to the technical field of anchorage devices, in particular to an unlocking type anchorage device for a concrete structure. The anchor head locking parts are arranged along the circumference of the cushion seat part at equal intervals, and the cushion seat part comprises a metal disc; the at least one group of perforation structures are arranged along the circumference of the metal disc in a penetrating manner, and each perforation structure comprises an internal threaded hole formed in the metal disc and an external threaded hole formed in the metal disc; the conical hole is located at the bottom of the internal threaded hole. By means of an assembly composed of the pedestal part and the anchor head locking part, construction of a concrete structure is achieved, an anchor structure capable of being unlocked is provided, an anchor head structure used for locking the tail end of a steel strand can be unlocked and recycled for later cyclic utilization, loss of the anchor head structure is reduced, the anchor head structure can be well recycled when needed, and the service life of the anchor head structure is prolonged. And the construction cost of the prestressed concrete is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of anchors, in particular to an unlocking anchor for a concrete structure. Background Art

[0002] Anchor refers to the permanent anchoring device used in prestressed concrete. It is an anchoring tool used in post-tensioned structures or components to maintain the tension of prestressed tendons and transfer it to the interior of the concrete. It is also called a prestressed anchor. The steel strands of the anchor generate anti-slip resistance in the concrete structure, increase the anti-slip friction resistance, and keep the concrete structure surface in a compressed state.

[0003] The anchor heads of the tensioning anchor cables of existing prestressed concrete structures cannot be effectively unlocked after use and can only be permanently fixed to the concrete structure, resulting in a high cost for prestressing the concrete structure. Therefore, an unlocking anchor for concrete structures is proposed to provide a set of unlockable anchor structures for the construction of concrete structures. The anchor head structure used for locking the tail end of the steel strand can be unlocked and recovered, thereby reducing the loss of the anchor head structure. The anchor head structure can be well recovered when needed, effectively reducing the cost of prestressed concrete construction. Utility Model Content

[0004] In response to the problems in the prior art, the utility model provides an unlocking anchor for concrete structures, which provides a set of unlockable anchor structures for the construction of concrete structures. The anchor head structure used to lock the tail end of the steel strand can be unlocked and recovered, thereby reducing the loss of the anchor head structure. The anchor head structure can be well recovered when needed, effectively reducing the cost of prestressed concrete construction.

[0005] The technical solution adopted by the utility model to solve the technical problem is an unlocking anchor for concrete structure, comprising:

[0006] Cushion seat;

[0007] At least one group of anchor head locking parts are provided and are arranged at equal distances along the circumference of the cushion seat part.

[0008] By adopting the above technical solution, a set of unlockable anchor structures is provided for the construction of concrete structures through the components consisting of the cushion seat part and the anchor head locking part. The anchor head structure used to lock the tail end of the steel strand can be unlocked and recovered for later recycling, thereby reducing the loss of the anchor head structure. The anchor head structure can be well recycled when needed, effectively reducing the cost of prestressed concrete construction.

[0009] Specifically, the cushion portion includes:

[0010] Metal plate;

[0011] At least one group of perforated structures is provided and is opened along the circumference of the metal disk.

[0012] By adopting the above technical solution, the cushion seat portion provides support for the anchor head locking portion on the support.

[0013] Specifically, the perforated structure includes:

[0014] An internal threaded hole is provided on the metal plate;

[0015] Conical hole, located at the bottom of the internal threaded hole.

[0016] Specifically, the internal threaded hole is vertically and coaxially connected to the tapered hole.

[0017] Specifically, the anchor head locking portion includes:

[0018] External hexagon;

[0019] External thread connector, set at the bottom of the external hexagon;

[0020] A spring connected to the bottom of the external threaded joint;

[0021] A conical sleeve connected to the bottom of the spring;

[0022] At least one group of clips are provided and are arranged at equal distances along the circumference of the bottom of the conical sleeve.

[0023] By adopting the above technical solution, the steel strand is locked and fixed by the anchor head locking part, so that the steel strand is tensioned in the concrete.

[0024] Specifically, the external hexagonal and external thread joints and the tapered sleeve are vertically and coaxially connected.

[0025] The beneficial effects of the utility model are as follows: through the assembly consisting of the cushion seat part and the anchor head locking part, a set of unlockable anchor structure is provided for the construction of concrete structure, and the anchor head structure used for locking the tail end of the steel strand can be unlocked and recovered for later recycling, thereby reducing the loss of the anchor head structure, and the anchor head structure can be well recovered when needed, effectively reducing the cost of prestressed concrete construction, and solving the problem that the anchor head of the tensioning anchor cable of the existing prestressed concrete structure cannot be effectively unlocked after use and can only be permanently on the concrete structure, resulting in high cost of prestressing operation of the concrete structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is an overall schematic diagram of the utility model;

[0028] Figure 2 It is a schematic diagram of the cushion seat portion of the utility model;

[0029] Figure 3 It is a schematic diagram of the anchor head locking part of the utility model;

[0030] Figure 4 It is an exploded schematic diagram of the anchor head locking part of the utility model.

[0031] In the figure: 1, cushion seat; 101, metal plate; 102, internal thread hole; 103, tapered hole; 2, anchor head lock; 201, external hexagon; 202, external thread joint; 203, spring; 204, tapered sleeve; 205, clip. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] In order to reduce costs, such as Figure 1-4 As shown, the unlocking anchor for concrete structure described in the utility model comprises:

[0034] A cushion portion 1;

[0035] At least one group of anchor head locking parts 2 are provided and are arranged at equal distances along the circumference of the cushion seat part 1 .

[0036] When in use, a set of unlockable anchor structure is provided for the construction of concrete structure through the cushion seat part 1 and the anchor head locking part 2. The anchor head structure used for locking the tail end of the steel strand can be unlocked and recovered for later recycling, thereby reducing the loss of the anchor head structure. The anchor head structure can be well recycled when needed, effectively reducing the cost of prestressed concrete construction.

[0037] For example, Figure 2 As shown, the utility model also includes that the cushion seat portion 1 includes:

[0038] Metal plate 101;

[0039] At least one group of perforated structures is provided and is opened along the circumference of the metal plate 101 .

[0040] The perforated structure comprises:

[0041] An internal threaded hole 102 is provided on the metal plate 101;

[0042] The tapered hole 103 is located at the bottom of the internal threaded hole 102 .

[0043] When in use, the tail end of the steel strand in the concrete structure is penetrated through the perforated structure of the metal plate 101 .

[0044] The internal threaded hole 102 is vertically and coaxially connected to the tapered hole 103 .

[0045] For example, Figure 3 ,4 As shown, the utility model also includes that the anchor head locking portion 2 includes:

[0046] External hexagon 201;

[0047] The external thread connector 202 is arranged at the bottom of the external hexagon 201;

[0048] Spring 203, connected to the bottom of the external threaded connector 202;

[0049] A conical sleeve 204 is connected to the bottom of the spring 203;

[0050] At least one group of clips 205 are provided and are arranged at equal distances along the circumference of the bottom of the conical sleeve 204 .

[0051] When in use, the anchor head lock part 2 is sequentially sleeved on the pair of steel strands, and the conical sleeve 204 and the spring 203 at the tail of the anchor head lock part 2 are sequentially inserted into the conical hole 103 of the cushion seat part 1, and then the external threaded connector 202 on the external hexagon 201 is tightened against the internal threaded hole 102 by a hexagonal wrench, so that the clip 205 of the conical sleeve 204 clamps the steel strands in the metal plate 101.

[0052] The external hexagon 201, the external thread joint 202 and the tapered sleeve 204 are vertically and coaxially connected.

[0053] When the utility model is used, the perforated structure of the metal plate 101 is sequentially inserted into the tail end of the steel strand in the concrete structure, and the required number of anchor head lock parts 2 are sequentially sleeved on the steel strand, and the conical sleeve 204 and the spring 203 at the tail of the anchor head lock part 2 are sequentially inserted into the conical hole 103 of the cushion seat part 1, and then the external thread joint 202 on the external hexagon 201 is tightened to the internal thread hole 102 by a hexagonal wrench, so that the clip 205 of the conical sleeve 204 is gradually plugged into the conical hole 103 and the steel strand. The steel strands are clamped between the strands. When the concrete is dried in the later stage and the anchor head needs to be unlocked and recovered, the worker rotates the outer hexagon 201 with a hexagonal wrench to make the outer hexagon 201 and the external threaded joint 202 leave the metal plate 101. Then, the tapered sleeve 204 and the clip 205 connected by the spring 203 can be pulled out of the tapered hole 103 by pulling the outer hexagon 201, so that the anchor head can be unlocked. The worker removes the cushion seat 1 and the anchor head lock 2 for recovery and uses them in the next project.

[0054] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. An unlocking anchor for concrete structure, characterized in that: include: A cushion portion (1); At least one set of anchor head locking parts (2) is provided and arranged at equal distances along the circumference of the cushion seat part (1); The anchor head locking part (2) comprises: External hexagon (201); An external thread connector (202) is disposed at the bottom of the external hexagon (201); A spring (203) connected to the bottom of the external threaded connector (202); A conical sleeve (204) connected to the bottom of the spring (203); At least one group of clips (205) are provided and are arranged at equal distances along the circumference of the bottom of the conical sleeve (204).

2. The unlocking anchor for concrete structure according to claim 1, characterized in that: The cushion portion (1) comprises: A metal plate (101); At least one group of perforated structures is provided and is opened along the circumference of the metal plate (101).

3. The unlocking anchor for concrete structure according to claim 2, characterized in that: The perforated structure comprises: An internal threaded hole (102) is provided on the metal plate (101); The tapered hole (103) is located at the bottom of the internal threaded hole (102).

4. The unlocking anchor for concrete structure according to claim 3, characterized in that: The internal threaded hole (102) is vertically and coaxially connected to the conical hole (103).

5. The unlocking anchor for concrete structure according to claim 4, characterized in that: The external hexagon (201), the external thread joint (202) and the tapered sleeve (204) are vertically and coaxially connected.

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