Prestressed system support

Abstract

The utility model discloses a prestress system support which comprises an upper support plate, a middle support plate is arranged at the bottom of the upper support plate, the middle support plate comprises a pressure-bearing component and a limiting component, a groove is formed in the outer wall of the top of the pressure-bearing component, an insertion hole is formed in the limiting component, a steel strand is arranged in the groove, the end of the steel strand extends into the insertion hole, and the end of the steel strand is connected with the limiting component. And a jacket is arranged in the penetrating hole and is fixed at the end part of the steel strand. The limiting component and the pressure-bearing component are assembled and fixed together through the steel strand and the jacket to form the middle support plate, so that when the limiting component is abraded, the limiting component can be independently taken down after the prestress of the steel strand is released, the whole middle support plate does not need to be replaced, and the maintenance of the support is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of bridge bearing technology, specifically to prestressed system bearings. Background Technology

[0002] Bridge bearings are important force transmission devices that connect the superstructure and substructure of a bridge. They are used to transfer loads and adapt to deformation, and are an important component of bridges.

[0003] Bridge bearings consist of an upper bearing plate, a middle bearing plate, a lower bearing plate, and a spherical crown liner located between the middle and lower bearing plates. During the use of bridge bearings, the limiting components on the middle bearing plate are prone to wear. However, the middle bearing plate of existing bearings is usually a single piece, which means that replacing the limiting components requires replacing the entire middle bearing plate, making bearing maintenance inconvenient. Therefore, there is an urgent need to design prestressed system bearings to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a prestressed system support to address the aforementioned shortcomings in the prior art.

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

[0006] A prestressed system support includes an upper support plate, a middle support plate at the bottom of the upper support plate, and a pressure-bearing component and a limiting component. The top outer wall of the pressure-bearing component has a groove, and the inside of the limiting component has an insertion hole. A steel strand is arranged inside the groove, and the end of the steel strand extends into the insertion hole. A sleeve is arranged in the insertion hole and fixed to the end of the steel strand.

[0007] Furthermore, a lower support plate is provided at the bottom of the middle support plate, and a spherical crown liner is provided between the lower support plate and the middle support plate.

[0008] Furthermore, a protective sleeve is fixed to the top outer wall of the upper support plate, and an anchor rod is inserted into the inside of the middle support plate, with the anchor rod inserted inside the protective sleeve.

[0009] Furthermore, the limiting component is located on both sides of the pressure-bearing component, and an arc-shaped channel is provided in the middle of the insertion hole.

[0010] Furthermore, the limiting component has a circular hole inside, and the pressure-bearing component is located inside the circular hole.

[0011] Furthermore, a uniformly distributed partition is provided between the pressure-bearing component and the limiting component, and the top of the partition is provided with a clearance opening adapted to the groove.

[0012] In the above technical solution, the prestressed system support provided by this utility model has the following advantages: the limiting component and the pressure-bearing component are assembled and fixed together by steel strands and a jacket to form a middle support plate, so that when the limiting component is worn, the limiting component can be removed separately after releasing the prestress of the steel strands without replacing the entire middle support plate, thus making the support maintenance more convenient; the partition is fixed between the limiting component and the pressure-bearing component, so that the gap between the limiting component and the lower support plate can be adjusted by changing the number of partitions, thus making the support more convenient to debug. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of a movable support structure provided for an embodiment of the prestressed system support of this utility model.

[0015] Figure 2 This is a schematic diagram of the middle support plate structure of the movable support provided in the embodiment of the prestressed system support of this utility model.

[0016] Figure 3 This is an enlarged structural schematic diagram of point A provided for an embodiment of the prestressed system support of this utility model.

[0017] Figure 4 A schematic diagram of the partition structure provided for an embodiment of the prestressed system support of this utility model.

[0018] Figure 5 A schematic diagram of a fixed support structure provided for an embodiment of the prestressed system support of this utility model.

[0019] Figure 6 A schematic diagram of the middle support plate structure of the fixed support provided in the embodiment of the prestressed system support of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1 Upper support plate, 2 Lower support plate, 3 Middle support plate, 4 Limiting component, 5 Pressure bearing component, 6 Steel strand, 7 Through hole, 8 Partition plate, 9 Clearance opening, 10 Groove, 11 Jacket, 12 Spherical crown liner, 13 Sheath, 14 Anchor rod, 15 Arc channel, 16 Circular hole. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-6 As shown, the prestressed system support provided in this embodiment of the present invention includes an upper support plate 1, a middle support plate 3 at the bottom of the upper support plate 1, the middle support plate 3 includes a pressure-bearing component 5 and a limiting component 4, a groove 10 is opened on the top outer wall of the pressure-bearing component 5, an insertion hole 7 is opened inside the limiting component 4, a steel strand 6 is arranged inside the groove 10, the end of the steel strand 6 extends into the insertion hole 7, a sleeve 11 is arranged in the insertion hole 7, and the sleeve 11 is fixed to the end of the steel strand 6.

[0024] Specifically, in this embodiment, an upper support plate 1 is included, and a middle support plate 3 is provided at the bottom of the upper support plate 1. The middle support plate 3 includes a pressure-bearing component 5 and a limiting component 4. A groove 10 is opened on the top outer wall of the pressure-bearing component 5, and an insertion hole 7 is opened inside the limiting component 4. A steel strand 6 is arranged inside the groove 10, and the end of the steel strand 6 extends into the insertion hole 7. A sleeve 11 is arranged in the insertion hole 7. The sleeve 11 is conical and has a contraction opening, so that it can contract under force. The sleeve 11 is fixed to the end of the steel strand 6. The insertion hole 7 where the sleeve 11 is located is also conical. After applying prestress to the steel strand 6, the sleeve 11 can contract through the conical structure, thereby clamping and fixing the steel strand 6. The specific fixing principle between the sleeve 11 and the steel strand 6 is the existing technology. The bottom of the middle support plate 3 is provided with a lower support plate 2. A spherical crown liner 12 is provided between the lower support plate 2 and the middle support plate 3. The spherical crown liner 12 plays the role of transmitting vertical force. The top outer wall of the upper support plate 1 is fixed with a protective sleeve 13. An anchor rod 14 is inserted into the middle support plate 3. The anchor rod 14 is located at the four corners of the upper support plate 1. The anchor rod 14 is inserted into the protective sleeve 13. The anchor rod 14 on the upper support plate 1 is fixed to the upper bridge. The protective sleeve 13 can strengthen the anchor rod 14's resistance to horizontal force. At the same time, the bottom of the lower support plate 2 also has an anchor rod 14 and a protective sleeve 13. The anchor rod 14 is inserted into the limiting component 4.

[0025] The prestressed system support provided by this utility model assembles and fixes the limiting component 4 and the pressure-bearing component 5 together through steel strands 6 and jacket 11 to form the middle support plate 3. When the limiting component 4 wears out, the limiting component 4 can be removed separately after releasing the prestress of the steel strands 6, without having to replace the entire middle support plate 3, thus making the support maintenance more convenient.

[0026] In one embodiment of this utility model, as shown in 1-4, the support in this embodiment is a movable support. The limiting component 4 is located on both sides of the pressure-bearing component 5, and the lower support plate 2 is between the two limiting components 4, so that the lower support plate 2 can slide along the length direction of the limiting component 4. An arc channel 15 is provided in the middle of the through hole 7. The arc channel 15 prevents the steel strand 6 from breaking due to concentrated force. A uniformly distributed partition 8 is provided between the pressure-bearing component 5 and the limiting component 4. The top of the partition 8 is provided with a clearance opening 9 that matches the groove 10. The partition 8 is fixed between the limiting component 4 and the pressure-bearing component 5, so that the gap between the limiting component 4 and the lower support plate can be adjusted by changing the number of partitions 8, thereby making the support more convenient to adjust.

[0027] In another embodiment of this utility model, as shown in 5-6, the support in this embodiment is a rotating support. The limiting component 4 is provided with a circular hole 16 inside. The pressure bearing component 5 is circular and located inside the circular hole 16. That is, the four sides of the lower support plate 2 are limited. In this embodiment, the limiting component 4 can also be divided into two, so that after the prestress of the steel strand 6 is released, the limiting component 4 can be separated from the pressure bearing component 5 from both sides.

[0028] Working principle: When the limiting component 4 needs to be replaced, first release the prestress of the steel strand 6, then take out the anchor rod 14 inserted on the middle support plate 3, so that the limiting components 4 on both sides can be separated from the pressure-bearing components 5. Then, the steel strand 6 is reinserted into the insertion hole 7 of the limiting component 4 to be replaced, and the limiting component 4 and the pressure-bearing components 5 are re-fixed by the prestress of the steel strand 6.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prestressed system support, characterized in that, The system includes an upper support plate (1), and a middle support plate (3) is provided at the bottom of the upper support plate (1). The middle support plate (3) includes a pressure-bearing component (5) and a limiting component (4). The top outer wall of the pressure-bearing component (5) has a groove (10). The inside of the limiting component (4) has an insertion hole (7). A steel strand (6) is provided inside the groove (10). The end of the steel strand (6) extends into the insertion hole (7). A sleeve (11) is provided inside the insertion hole (7). The sleeve (11) is fixed to the end of the steel strand (6).

2. The prestressed system support according to claim 1, characterized in that, The bottom of the middle support plate (3) is provided with a lower support plate (2), and a spherical crown liner (12) is provided between the lower support plate (2) and the middle support plate (3).

3. The prestressed system support according to claim 1, characterized in that, The top outer wall of the upper support plate (1) is fixed with a sleeve (13), and an anchor rod (14) is inserted into the inside of the middle support plate (3). The anchor rod (14) is inserted into the inside of the sleeve (13).

4. The prestressed system support according to claim 1, characterized in that, The limiting component (4) is located on both sides of the pressure-bearing component (5), and an arc channel (15) is provided in the middle of the insertion hole (7).

5. The prestressed system support according to claim 1, characterized in that, The limiting component (4) has a circular hole (16) inside, and the pressure-bearing component (5) is located inside the circular hole (16).

6. The prestressed system support according to claim 4, characterized in that, A partition (8) is provided between the pressure-bearing component (5) and the limiting component (4), and the top of the partition (8) is provided with a relief opening (9) that is adapted to the groove (10).

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