Prestressed reinforcement steel pipe lining anti-shearing device

Abstract

The utility model discloses an anti-shearing device for a prestressed reinforcement steel pipe bushing, relates to the technical field of anti-shearing devices for prestressed reinforcements, and aims to improve the problem that the prestressed reinforcements are not completely vertical to anchor bearing plates due to objective reasons such as nonstandard manual operation in the tensioning process of prestressed finish-rolled deformed steel bars, so that the service life of the prestressed finish-rolled deformed steel bars is prolonged. The utility model relates to a steel pipe bushing assembly, in particular to a prestressed reinforcement tensioning device, which solves the problem that the working performance of a prestressed reinforcement is affected due to the fact that the prestressed reinforcement slips when the prestressed reinforcement is tensioned and is subjected to larger shearing force at a steel backing plate. The prestressed reinforcement tensioning device comprises an anchor backing plate, the prestressed reinforcement and a steel pipe bushing assembly, and a through hole is formed in the anchor backing plate. Aiming at the situation that the prestressed reinforcement bears shear force at the anchor backing plate, the steel pipe lining assembly is additionally arranged between the through hole of the anchor backing plate and the prestressed reinforcement, so that the prestressed reinforcement is prevented from bearing large shear force possibly generated at the position, the error-tolerant rate in the construction process is improved, and the construction efficiency is improved. Therefore, the integrity of the prestressed reinforcement is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to pre -stressed reinforcement anti -shearing device field especially is related to a pre -stressed reinforcement steel pipe bushing anti -shearing device. BACKGROUND

[0002] In the tensioning process of the pre-stressed fine rolling screw, due to the non-standard manual operation and other objective reasons, the pre-stressed reinforcement and anchor pad are not completely perpendicular, which causes the pre-stressed reinforcement to slip during the tensioning of the pre-stressed reinforcement, and the pre-stressed reinforcement is subjected to a large shear force at the steel pad, thereby affecting the working performance of the pre-stressed reinforcement, and in severe cases, even the phenomenon of pre-stressed reinforcement fracture occurs, which affects the engineering structure and has a high processing cost.

[0003] Therefore, a pre-stressed reinforcement steel pipe bushing anti-shearing device is provided. SUMMARY

[0004] In order to improve the problem that in the tensioning process of the pre-stressed fine rolling screw, due to the non-standard manual operation and other objective reasons, the pre-stressed reinforcement and anchor pad are not completely perpendicular, which causes the pre-stressed reinforcement to slip during the tensioning of the pre-stressed reinforcement, and the pre-stressed reinforcement is subjected to a large shear force at the steel pad, thereby affecting the working performance of the pre-stressed reinforcement, the utility model provides a pre-stressed reinforcement steel pipe bushing anti-shearing device.

[0005] The utility model provides a pre-stressed reinforcement steel pipe bushing anti-shearing device adopts the following technical scheme:

[0006] A pre-stressed reinforcement steel pipe bushing anti-shearing device, comprising an anchor pad, a pre-stressed reinforcement and a steel pipe bushing assembly, a through hole is formed in the anchor pad, the steel pipe bushing assembly is detachably installed at the through hole, and the pre-stressed reinforcement penetrates the inside of the steel pipe bushing assembly.

[0007] The steel pipe bushing assembly comprises a connecting disc mounted on the anchor pad and a bushing steel pipe welded at the center of the connecting disc, the bushing steel pipe is inserted into the through hole, and the pre-stressed reinforcement penetrates the inside of the bushing steel pipe.

[0008] By adopting the above technical scheme, in view of the shear force that may occur at the anchor pad, a steel pipe bushing assembly is added between the through hole of the anchor pad and the pre-stressed reinforcement, which prevents the pre-stressed reinforcement from being subjected to a large shear force at this position, improves the fault tolerance rate during construction, and thus protects the integrity of the pre-stressed reinforcement.

[0009] Optionally, a screw rod is welded and fixed to the surface of the anchor pad, a corresponding insertion hole is formed in the connecting disc, the screw rod is inserted into the inside of the insertion hole, and one end of the screw rod extending to the outside of the insertion hole is threadedly connected with a nut.

[0010] By adopting the technical scheme, the steel pipe bushing assembly and the anchor pad plate can be disassembled, so that a suitable steel pipe bushing assembly can be replaced according to the diameter of the prestressed steel bar.

[0011] Optionally, the number of the screw rods and the number of the insertion holes are both three, and the screw rods and the insertion holes are both annularly arranged.

[0012] By adopting the technical scheme, the connection effect between the steel pipe bushing assembly and the anchor pad plate is improved.

[0013] Optionally, the surface of the connecting disc is fixedly provided with a reinforcing plate on both sides, and the reinforcing plate is welded to the bushing steel pipe.

[0014] By adopting the technical scheme, the reinforcing plate is arranged, the connecting area between the connecting disc and the bushing steel pipe is improved, and the connection stability of the bushing steel pipe is improved.

[0015] Optionally, the anchor pad plate is provided with a limiting slot communicated with the through hole on one side, the connecting disc is fixedly connected with a limiting block on one side, and the limiting block is inserted into the limiting slot.

[0016] By adopting the technical scheme, the limiting slot and the limiting block are arranged, and the stress between the screw rod and the connecting disc is shared.

[0017] Optionally, the limiting block is the same in size as the limiting slot.

[0018] By adopting the technical scheme, the positioning effect of the steel pipe bushing assembly is improved, and the steel pipe bushing assembly is not prone to deviation.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. The utility model discloses a method for preventing the prestressed steel bar from being subjected to large shear force, improving the fault tolerance in the construction process, and protecting the integrity of the prestressed steel bar.

[0021] 2. The steel pipe bushing assembly and the anchor pad plate are detachably connected, the suitable steel pipe bushing assembly can be replaced according to the diameter of the prestressed steel bar, the flexibility in use is improved, the applicability is high, the popularization is high, and the construction is simple and fast. DRAWINGS

[0022] Fig. 1 It is a three-dimensional structure schematic diagram of the utility model.

[0023] Fig. 2It is the three-dimensional structure schematic diagram of the anchor pad of the utility model.

[0024] Fig. 3 It is the rear view structure schematic diagram of the connecting disc of the utility model.

[0025] Mark explanation:

[0026] 1, anchor pad;2, prestressed steel;3, through hole;4, connecting disc;5, bushing steel pipe;6, screw;7, jack;8, nut;9, reinforcing plate;10, limiting groove;11, limiting block. Specific implementation

[0027] The following combines with the Figs. 1-3 Further detailed description is made to the application.

[0028] Please refer to Figs. 1-3 A prestressed steel steel pipe bushing anti-shearing device, including anchor pad 1, prestressed steel 2 and steel pipe bushing assembly, anchor pad 1 is set with through hole 3, and steel pipe bushing assembly is detachably installed at through hole 3, and prestressed steel 2 is penetrated in the inside of steel pipe bushing assembly, between anchor pad 1 through hole 3 and prestressed steel, by the method of additionally arranging steel pipe bushing assembly, prevent prestressed steel 2 from being subjected to the relatively large shear force possibly generated here, improve the fault tolerance in the construction process, to protect the integrity of prestressed steel 2

[0029] Refer to Figs. 1-3 Steel pipe bushing assembly includes connecting disc 4 installed on anchor pad 1 and bushing steel pipe 5 welded at the center of connecting disc 4, both sides of the surface of connecting disc 4 are fixedly installed with reinforcing plate 9, reinforcing plate 9 is weldedly connected with bushing steel pipe 5, the setting of reinforcing plate 9 improves the connecting area between connecting disc 4 and bushing steel pipe 5, thereby improving the connecting stability of bushing steel pipe 5, bushing steel pipe 5 is inserted in through hole 3, and prestressed steel 2 is penetrated in the inside of bushing steel pipe 5.

[0030] Refer to Figs. 1-3 The surface of anchor pad 1 is weldedly fixed with screw 6, the connecting disc 4 is set with corresponding jack 7, the screw 6 is inserted in the inside of jack 7, and the end of screw 6 extended to the outside of jack 7 is threadedly connected with nut 8, the setting of this structure is favorable for the dismounting between steel pipe bushing assembly and anchor pad 1, so that suitable steel pipe bushing assembly can be replaced according to the diameter of prestressed steel 2, the number of screw 6 and jack 7 is three, and the three screw 6 and jack 7 are annularly arrayed, the setting of this structure improves the connecting effect between steel pipe bushing assembly and anchor pad 1.

[0031] Refer to Figs. 1-3The side of the anchor pad 1 is provided with a limiting groove 10 communicated with the through hole 3, and the side of the connecting disc 4 is fixedly connected with a limiting block 11, the limiting block 11 is inserted into the inside of the limiting groove 10, and the limiting groove 10 and the limiting block 11 are beneficial to share the stress between the screw rod 6 and the connecting disc 4.

[0032] The implementation principle of the utility model is: through the situation that the prestressed steel bar 2 will appear shearing force at the anchor pad 1, between the anchor pad 1 through hole 3 and the prestressed steel bar 2, through the method of adding steel pipe bushing assembly, prevent the prestressed steel bar 2 from the possible large shearing force here, improve the fault tolerance in the construction process, thereby to protect the integrity of the prestressed steel bar 2;

[0033] And the steel pipe bushing assembly and the anchor pad 1 adopt detachable connection mode, can replace suitable steel pipe bushing assembly according to the diameter of the prestressed steel bar 2, improve the flexibility in the use process.

[0034] The above are the preferred embodiments of the utility model, and not limit the protection scope of the utility model, therefore: all equivalent changes made according to the structure, shape, principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A shear-resistant device for prestressed steel pipe bushings, comprising an anchor plate (1), prestressed steel bars (2), and a steel pipe bushing assembly, characterized in that: The anchor plate (1) has a through hole (3), and a steel pipe bushing assembly is installed at the through hole (3). The prestressed steel bar (2) passes through the inside of the steel pipe bushing assembly. The steel pipe bushing assembly includes a connecting plate (4) installed on the anchor plate (1) and a bushing steel pipe (5) welded to the center of the connecting plate (4). The bushing steel pipe (5) is inserted into the through hole (3), and the prestressed steel bar (2) passes through the bushing steel pipe (5).

2. The anti-shear device for prestressed steel pipe bushing according to claim 1, characterized in that: The anchor plate (1) is welded and fixed with a screw (6), and the connecting plate (4) is provided with a corresponding insertion hole (7). The screw (6) is inserted into the inside of the insertion hole (7), and a nut (8) is threaded to one end of the screw (6) extending to the outside of the insertion hole (7).

3. The anti-shear device for prestressed steel pipe bushing according to claim 2, characterized in that: The number of screws (6) and sockets (7) is three, and the three screws (6) and sockets (7) are distributed in a ring array.

4. The anti-shear device for prestressed steel pipe bushing according to claim 1, characterized in that: Reinforcing plates (9) are fixedly installed on both sides of the surface of the connecting plate (4), and the reinforcing plates (9) are welded to the bushing steel pipe (5).

5. The anti-shear device for prestressed steel pipe bushing according to claim 1, characterized in that: The anchor plate (1) has a limiting groove (10) that communicates with the through hole (3) on one side, and a limiting block (11) is fixedly connected to one side of the connecting plate (4), and the limiting block (11) is inserted into the inside of the limiting groove (10).

6. The anti-shear device for prestressed steel pipe bushing according to claim 5, characterized in that: The size of the limiting block (11) is the same as the size of the limiting groove (10).

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