CN216405132U - Temporary prestress structure for prefabricated section assembled bridge - Google Patents

Abstract

The utility model discloses a temporary prestressed structure for a prefabricated section assembled bridge, which comprises: the tension device comprises a first tension screw and a second tension screw, wherein the first tension screw and the second tension screw are respectively in threaded connection through a screw connector, a connecting disc is arranged on the outer surface of the first tension screw, the connecting disc is in threaded connection with the first tension screw, two tension rods are fixedly connected to one side of the connecting disc, a limiting piece is fixedly connected to the top end of each tension rod, two clamping blocks are arranged on the outer surface of the second tension screw, and the two clamping blocks are symmetrically welded to the two sides of the second tension screw. According to the utility model, through the matching between the tension rod and the clamping block, when the first tension screw and the second tension screw are under tension, the tension rod can be under certain tension, so that the influence of larger tension on the threads arranged on the first tension screw, the screw connector and the second tension screw is reduced, the service life of the device is greatly prolonged, and the device is convenient to reuse.

Description

A temporary prestressed structure for prefabricated segmented bridges

technical field

The utility model belongs to the technical field of bridge prestressed structures, in particular to a temporary prestressed structure used for prefabricated segment-assembled bridges.

Background technique

The construction method of segmental prefabrication and assembly is to divide the upper structure of the bridge into several standard segment beams. After the prefabrication site is matched and prefabricated, special assembly equipment such as a bridge erecting machine is used on the bridge lower structure in order. The blocks are assembled and pre-stressed at the same time to make it an integral structure, and are advanced and assembled span by span along the predetermined installation direction. Prestressing is the compressive stress pre-applied to the structure during construction in order to improve the service performance of the structure. During the service of the structure, the precompressive stress can fully or partially offset the tensile stress caused by the load and avoid structural damage. In the existing prestressed structure, the screw connector and the tensioning screw are connected by threads. When in use, the threads will be easily damaged by a large tensile force, and the service life is short, which affects the use.

Utility model content

In order to solve the above problems, the present invention provides a temporary prestressed structure for prefabricated segmented bridges, so as to solve the problem that the thread connecting the existing screw connector and the tension screw is easily damaged by a large tensile force during use. The problem.

In order to achieve the above purpose, the present utility model provides a temporary prestressed structure for prefabricated segment-assembled bridges, including:

The first tension screw and the second tension screw, a screw connector is arranged between the first tension screw and the second tension screw, the first tension screw and the second tension screw are respectively connected with the screw connector, and the outer part of the first tension screw The surface is provided with a connecting plate, the connecting plate is threadedly connected with the first tension screw, and the connecting plate is far from the screw connector, one side of the connecting plate is fixedly connected with two tension rods, and the two tension rods are symmetrical along the extension direction of the first tension screw The top end of the tension rod is fixedly connected with the limiting piece, and the outer surface of the second tension screw is provided with two clamping blocks, and the two clamping blocks are symmetrically welded on both sides of the second tension rod.

According to a specific embodiment of the present invention, a clamping slot is opened inside the clamping block, and the width of the clamping slot is adapted to the diameter of the tension rod.

According to a specific embodiment of the present invention, connecting plates are respectively provided on both sides of the second tension screw, and the connection plates are fixedly connected with the second tension screw.

According to a specific embodiment of the present invention, the connecting plate is an L-shaped structural steel plate, the long side of the L-shaped structure of the connecting plate is fixedly connected with the second tension screw, and the short side of the L-shaped structure of the connecting plate is located on the top of the clamping block and away from the clamping piece.

According to a specific embodiment of the present invention, the short side of the L-shaped structure of the connecting plate is provided with a threaded hole, and the screw hole is provided with a lead screw, and the lead screw is threadedly connected to the short side of the L-shaped structure of the connecting plate.

According to a specific embodiment of the present invention, the first end of the lead screw is provided with a fixing column, which is fixedly connected with the lead screw, and the second end of the lead screw is provided with a knob, and the knob is fixedly connected with the lead screw.

According to a specific embodiment of the present invention, the diameter of the fixing column is larger than the diameter of the lead screw.

According to a specific embodiment of the present invention, the diameter of the connecting plate is larger than the diameter of the first tension screw.

According to a specific embodiment of the present invention, the diameter of the limiting piece is larger than the diameter of the tension rod.

Compared with the prior art, the present utility model provides a temporary prestressed structure for a prefabricated segment-assembled bridge, through the connecting plate arranged on the first tension screw, the tension rod fixed on the connecting plate, and the second tension rod. The cooperation between the blocks set on the two tension screws, when the first tension screw and the second tension screw are under tension, the tension rod will be subject to a certain tension, reducing the larger tension to the first tension screw, screw connector and The threads set on the second tension screw have an influence, which greatly improves the service life of the device and facilitates repeated use.

Description of drawings

FIG. 1 is a front view of a temporary prestressed structure provided according to an embodiment of the present invention.

2 is a schematic three-dimensional structural diagram of a temporary prestressed structure provided according to an embodiment of the present invention.

FIG. 3 is a partial enlarged schematic diagram of a temporary prestressed structure A provided according to an embodiment of the present invention.

Reference number:

1-first tension screw; 2-screw connector; 3-second tension screw; 4-connection plate; 5-tension rod; 6-limiting piece; 7-block; ; 10-screw; 11-fixed column; 12-knob.

Detailed ways

In order to make the concept and idea of the present invention more clearly understood by those skilled in the art, the present invention is described in detail below with reference to specific embodiments. It should be understood that the embodiments presented herein are only a part of all possible embodiments of the present invention. After reading the description of the present application, those skilled in the art have the ability to improve, transform, or replace part or the whole of the following embodiments, and these improvements, transformations, or replacements are also included in the scope of protection of the present invention. .

As used herein, the terms "first," "second," and other similar words are not intended to imply any order, quantity, or importance, but are merely used to distinguish between different elements. As used herein, the terms "a", "an" and other similar words are not intended to mean that there is only one thing, but rather that the description is for only one of the things, which may have one or more. As used herein, the terms "comprises," "includes," and other similar words are intended to denote logical interrelationships and should not be construed to denote spatial structural relationships. For example, "A includes B" is intended to mean that logically B belongs to A, not that B is spatially internal to A. Additionally, the terms "comprising," "including," and other similar words are to be taken as open-ended rather than closed-ended. For example, "A includes B" means that B belongs to A, but B does not necessarily constitute the whole of A, and A may also include other elements such as C, D, and E.

In this document, the terms "embodiment", "this embodiment", "an embodiment", "one embodiment" do not mean that the description applies to only one particular embodiment, but rather that the description may also apply to in one or more other embodiments. It should be understood by those skilled in the art that, in this document, any description made with respect to a certain embodiment may be substituted, combined, or combined in other ways with the relevant descriptions in another embodiment or embodiments. The new embodiments generated by combining in other ways can be easily conceived by those skilled in the art, and belong to the protection scope of the present invention.

Example 1

Additional aspects and advantages of embodiments of the present invention will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of embodiments of the present invention. 1 to 3, an embodiment of the present utility model provides a temporary prestressed structure for a prefabricated segment-assembled bridge, including:

The first tension screw 1 and the second tension screw 3, the screw connector 2 is arranged between the first tension screw 1 and the second tension screw 3, and the first tension screw 1 and the second tension screw 3 are respectively threaded with the screw connector 2 Connection, the outer surface of the first tension screw 1 is provided with a connection plate 4, the connection plate 4 is threadedly connected with the first tension screw 1, and the connection plate 4 is far away from the screw connector 2, and the diameter of the connection plate 4 is larger than that of the first tension screw 1. diameter. One side of the connecting plate 4 is fixedly connected with two tension rods 5. The two tension rods 5 are symmetrically arranged along the extending direction of the first tension screw 1. Two clamping blocks 7 are arranged on the outer surface, and the two clamping blocks 7 are symmetrically welded on both sides of the second tension screw 3 . The interior of the clamping block 7 is provided with a clamping slot 8 , and the width of the clamping slot 8 is adapted to the diameter of the tension rod 5 . After the first tension screw 1 is connected with the second tension screw 3 through the screw connector 2, by rotating the connecting plate 4, the connecting plate 4 drives the tension rod 5 to rotate, and the tension rod 5 rotates to the inside of the slot 8, and the limit piece 6 is blocked on one side of the block 7. When the first tension screw 1 and the second tension screw 3 are under tension, the tension rod 5 is under a certain tension, reducing the larger tension to the first tension screw 1 and the screw connector 2. It has an influence on the thread opened on the second tension screw 3, which greatly improves the service life of the device and is convenient for repeated use.

As an optional technical solution of the present invention, connecting plates 9 are respectively provided on both sides of the second tensioning screw 3 , and the connecting plates 9 are fixedly connected with the second tensioning screw 3 . The connecting plate 9 is an L-shaped structural steel plate. The long side of the L-shaped structure of the connecting plate 9 is fixedly connected with the second tension screw 3 , and the short side of the L-shaped structure of the connecting plate 9 is located on the top of the block 7 and away from the block 7 . The short side of the L-shaped structure of the connecting plate 9 is provided with a threaded hole, and a screw 10 is arranged inside the screw hole, and the screw 10 is threadedly connected with the short side of the L-shaped structure of the connecting plate 9 . The first end of the lead screw 10 is provided with a fixing column 11 , which is fixedly connected with the lead screw 10 , and the second end of the lead screw 10 is provided with a knob 12 , and the knob 12 is fixedly connected with the lead screw 10 . Rotating the knob 12 drives the lead screw 10 to rotate, and the lead screw 10 rotates inside the connecting plate 9. Under the action of the thread, the lead screw 10 drives the fixed column 11 to move, and the fixed column 11 blocks the tension rod 5 to prevent the tension rod 5 from leaving the slot. 8.

Specifically, the diameter of the fixing column 11 is larger than the diameter of the lead screw 10 . In this way, when the lead screw 10 drives the fixed column 11 to move, the fixed column 11 can block the tension rod 5 .

Specifically, the diameter of the limiting piece 6 is larger than the diameter of the tension rod 5 . In this way, when the connecting plate 4 drives the tension rod 5 to rotate, the limiting piece 6 is blocked on one side of the clamping block 7 to prevent the tension rod 5 from being separated from the clamping block by the pulling force. Specifically, the position of the clamping slot 8 is adapted to the position of the tension rod 5 . When the connecting plate 4 is rotated, the connecting plate 4 drives the tension rod 5 to rotate, so that the tension rod 5 rotates into the interior of the clamping slot 8 .

Example 2

The embodiment of the present utility model provides a working method for a temporary prestressed structure of a prefabricated segment-assembled bridge, which specifically includes:

When the first tension screw 1 is connected with the second tension screw 3 through the screw connector 2, the connecting plate 4 is rotated, and the connecting plate 4 drives the tension rod 5 to rotate, and the tension rod 5 rotates into the interior of the slot 8, and the limit piece 6 is blocked on one side of the block 7. When the first tension screw 1 and the second tension screw 3 are under tension, the tension rod 5 is under a certain tension, reducing the larger tension to the first tension screw 1 and the screw connector 2. and the thread opened on the second tension screw 3, the screw 10 is driven to rotate by rotating the knob 12, and the screw 10 rotates inside the connecting plate 9. The column 11 blocks the tension rod 5 to prevent the tension rod 5 from being separated from the slot 8 .

To sum up, the present utility model provides a temporary prestressed structure for prefabricated segmented bridges, through the connecting plate set on the first tension screw, the tension rod fixed on the connecting plate, and the second tension rod. The cooperation between the blocks set on the screw, when the first tension screw and the second tension screw are under tension, the tension rod will be subject to a certain tension, reducing the larger tension to the first tension screw, the screw connector and the second tension screw The thread on the tension screw has an influence, which greatly improves the service life of the device and facilitates repeated use.

The concepts, principles and ideas of the present invention have been described in detail above in conjunction with specific implementations (including embodiments and examples). Those skilled in the art should understand that the embodiments of the present invention are not limited to the above-mentioned forms. After reading the application documents, those skilled in the art can perform steps, methods, systems and components in the above-mentioned embodiments. Any possible improvements, replacements and equivalent forms should be considered, and these improvements, replacements and equivalent forms should be regarded as falling within the scope of the present utility model, and the protection scope of the present utility model is only subject to the claims.

Claims (9)

1. A temporary prestressed structure for a prefabricated segment-assembled bridge, characterized in that it comprises: a first tension screw and a second tension screw, the first tension screw and the second tension screw being arranged between the first tension screw and the second tension screw There is a screw connector, the first tension screw and the second tension screw are respectively connected with the screw connector, the outer surface of the first tension screw is provided with a connecting plate, and the connecting plate is connected with the first tension screw. A tension screw is threadedly connected, and the connecting plate is far away from the screw connector. Two tension rods are fixedly connected to one side of the connection disk, and the two tension rods are symmetrical along the extending direction of the first tension screw. The top end of the tension rod is fixedly connected with the limiting piece, and the outer surface of the second tension screw is provided with two clamping blocks, and the two clamping blocks are symmetrically welded on both sides of the second tension screw. 2 . The temporary prestressed structure for a prefabricated segment-assembled bridge according to claim 1 , wherein the clamping block is provided with a clamping groove, and the width of the clamping groove is the same as the width of the tension rod. 3 . diameter to match. 3 . The temporary prestressed structure for a prefabricated segment-assembled bridge according to claim 1 , wherein connecting plates are respectively provided on both sides of the second tension screw, and the connecting plates are connected to the first tension screw. 4 . Two tension screws are fixedly connected. 4 . The temporary prestressed structure for prefabricated segmented bridges according to claim 3 , wherein the connecting plate is an L-shaped structural steel plate, and the long side of the L-shaped structure of the connecting plate is the same as that of the connecting plate. 5 . The second tension screw is fixedly connected, and the short side of the L-shaped structure of the connecting plate is located on the top of the clamping block and away from the clamping block. 5 . The temporary prestressed structure for prefabricated segmented bridges according to claim 3 , wherein the short side of the L-shaped structure of the connecting plate is provided with threaded holes, and the threaded holes are provided with threaded holes. 6 . The lead screw is threadedly connected with the short side of the L-shaped structure of the connecting plate. 6 . The temporary prestressed structure for prefabricated segment-assembled bridges according to claim 5 , wherein the first end of the lead screw is provided with a fixed column, and the fixed column is fixed to the lead screw. 7 . The second end of the lead screw is provided with a knob, and the knob is fixedly connected with the lead screw. 7 . The temporary prestressed structure for a prefabricated segment-assembled bridge according to claim 6 , wherein the diameter of the fixing column is larger than the diameter of the lead screw. 8 . 8 . The temporary prestressed structure for a prefabricated segmented bridge according to claim 1 , wherein the diameter of the connecting plate is larger than the diameter of the first tension screw. 9 . 9 . The temporary prestressed structure for a prefabricated segmented bridge according to claim 1 , wherein the diameter of the limiting piece is larger than the diameter of the tension rod. 10 .

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