Cross beam support

Abstract

The utility model relates to the technical field of bridges, in particular to a cross beam support which comprises two bridge towers and a cross beam support body fixedly installed between the two bridge towers, bridge piers are fixedly arranged at the bottoms of the bridge towers, and a plurality of jacks are arranged on the top of the cross beam support body through a supporting mechanism. The supporting mechanism can enable acting force borne by the jacks to be evenly distributed on the cross beam support, the jacks are distributed at equal intervals, the output ends of the jacks are provided with steel cables through limiting mechanisms, anchoring points are installed on the two sides of the bridge pier, and the two ends of each steel cable are connected with the two anchoring points through hooks. According to the utility model, the pre-pressing stress is uniform, so that the pre-pressing effect is improved, and the pre-pressing precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to a beam bracket. Background Art

[0002] After the crossbeam support is erected and before the concrete is poured, it needs to be pre-stressed to eliminate the inelastic deformation of each component of the support, so that the support can remain stable during the concrete pouring and improve the construction safety. The commonly used support pre-stressing method is the stacking method, which stacks a certain load of steel bars, concrete blocks, water tanks, etc. on the support for pre-stressing. This method requires a large amount of materials to achieve the pre-stressing effect. The operation process is cumbersome, time-consuming, high cost, and low efficiency. For ultra-high supports, hoisting a large amount of materials onto the support will also increase construction risks.

[0003] In the patent with announcement number CN201521107875.8, a suspension bridge tower crossbeam support prestressing device is disclosed. The suspension bridge tower includes a pier body, and a pedestal is provided under the pier body. The pier body is provided with a crossbeam support system, including an anchoring platform, a tensioning distribution beam, a tensioning pedestal and a tensioning steel strand. The anchoring platform is fixedly arranged on the pedestal, the tensioning distribution beam is arranged on the crossbeam support system, the tensioning pedestal is welded to the tensioning distribution beam, a jack is provided on the top of the tensioning pedestal, the lower end of the tensioning steel strand is fixedly connected to the anchoring platform, and the upper end passes through the tensioning distribution beam and is connected to the tensioning pedestal.

[0004] The above patent has the following problems:

[0005] The jack is directly installed on the beam bracket without a pressure sharing device, which causes the downward pressure of the jack to be not evenly distributed on the beam bracket, resulting in uneven force on the beam bracket, and thus insufficient preload accuracy, so we launched a beam bracket. Utility Model Content

[0006] The purpose of the utility model is to provide a crossbeam bracket, which has uniform pre-stressing force, thereby improving the pre-stressing effect and high pre-stressing accuracy, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A beam support comprises two bridge towers and a beam support fixedly installed between the two bridge towers, wherein a bridge pier is fixedly provided at the bottom of the bridge tower, and a plurality of jacks are provided at the top of the beam support through a supporting mechanism, wherein the supporting mechanism can evenly distribute the forces acting on the jacks on the beam support, and a plurality of jacks are arranged at equal intervals, and a steel cable is provided at the output end of the jack through a limiting mechanism, and anchor points are installed on both sides of the pier, and both ends of the steel cable are connected to the two anchor points through hooks.

[0009] Preferably, the supporting mechanism includes a mounting plate, which is fixedly connected to the bottom of the jack, and a plurality of inclined supporting plates are fixedly provided on the bottom of the mounting plate, wherein the lower ends of the plurality of supporting plates are all connected to the top of the beam bracket, and the plurality of supporting plates are radially distributed.

[0010] Preferably, the limiting mechanism comprises a limiting ring, and the steel cable passes through the limiting ring.

[0011] Preferably, rollers are rotatably provided on both sides of the beam support, and the steel cables are slidably connected to the corresponding rollers.

[0012] Preferably, a limiting groove is provided on the circumferential wall of the roller.

[0013] Preferably, the groove wall of the limiting groove is arranged to be arc-shaped.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The crossbeam bracket is provided with a steel cable, a crossbeam bracket, a jack, a limit ring, a bridge tower, a bridge pier, an anchor point, a hook, a mounting plate, a support plate and a roller. After the steel cable passes through the limit ring, the hooks at both ends of the steel cable are fixed to the anchor point, and the jack is started. The output end of the jack pushes the limit ring. Since the steel cable positions the limit ring, the limit ring drives the jack to push the mounting plate in the reverse direction. The mounting plate evenly distributes the thrust on the crossbeam bracket through a plurality of support plates. The crossbeam bracket is pre-stressed evenly, thereby improving the pre-stressing effect and having high pre-stressing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the structure of a beam support.

[0017] Figure 2 for Figure 2 An enlarged schematic diagram of part A in the figure.

[0018] In the figure: 1. Steel cable; 2. Beam bracket; 3. Jack; 4. Limiting ring; 5. Bridge tower; 6. Bridge pier; 7. Anchor point; 8. Hook; 9. Mounting plate; 10. Support plate; 11. Roller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Please refer to Figure 1 to Figure 2 , the present utility model provides a technical solution:

[0021] A crossbeam support, comprising two bridge towers 5 and a crossbeam support 2 fixedly installed between the two bridge towers 5. The bottom of the bridge tower 5 is fixedly provided with a pier 6. A plurality of jacks 3 are provided on the top of the crossbeam support 2 through a support mechanism. The support mechanism can evenly distribute the acting force received by the jacks 3 on the crossbeam support 2. The plurality of jacks 3 are arranged at equal intervals. The output end of the jack 3 is provided with a steel cable 1 through a limiting mechanism. Anchor points 7 are installed on both sides of the pier 6. Both ends of the steel cable 1 are connected to the two anchor points 7 through hooks 8.

[0022] The support mechanism includes a mounting plate 9. The mounting plate 9 is fixedly connected to the bottom of the jack 3. A plurality of inclined support plates 10 are fixedly provided at the bottom of the mounting plate 9. The lower ends of the plurality of support plates 10 are all connected to the top of the crossbeam support 2, and the plurality of support plates 10 are radially distributed.

[0023] The limiting mechanism includes a limiting ring 4. The steel cable 1 passes through the limiting ring 4. The limiting ring 4 can prevent the steel cable 1 from detaching from the output end of the jack 3.

[0024] Rollers 11 are rotatably provided on both sides of the crossbeam support 2. The steel cable 1 is slidably connected to the corresponding rollers 11. The rollers 11 can reduce the friction between the crossbeam support 2 and the steel cable 1.

[0025] A limiting groove is provided on the circumferential wall of the roller 11. The groove wall of the limiting groove is arc-shaped. The limiting groove can reduce the probability of the steel cable 1 detaching from the roller 11.

[0026] During use, after passing the steel cable 1 through the limiting ring 4, fix the hooks 8 at both ends of the steel cable 1 to the anchor points 7. Start the jack 3. The output end of the jack 3 pushes the limiting ring 4. Since the steel cable 1 positions the limiting ring 4, the limiting ring 4 drives the jack 3 to push the mounting plate 9 in the reverse direction. The mounting plate 9 evenly distributes the thrust on the crossbeam support 2 through the plurality of support plates 10. The crossbeam support 2 is evenly stressed during preloading, thereby improving the preloading effect and having high preloading accuracy.

[0027] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A beam support, comprising two bridge towers (5) and a beam support (2) fixedly installed between the two bridge towers (5), wherein a bridge pier (6) is fixedly provided at the bottom of the bridge tower (5), characterized in that: A plurality of jacks (3) are arranged on the top of the crossbeam support (2) through a supporting mechanism. The supporting mechanism can evenly distribute the force acting on the jacks (3) on the crossbeam support (2). The plurality of jacks (3) are evenly spaced and arranged. A steel cable (1) is arranged at the output end of the jack (3) through a limiting mechanism. Anchor points (7) are installed on both sides of the pier (6). Both ends of the steel cable (1) are connected to the two anchor points (7) through hooks (8).

2. A beam support according to claim 1, characterized in that: The support mechanism comprises a mounting plate (9), wherein the mounting plate (9) is fixedly connected to the bottom of the jack (3), and a plurality of inclined support plates (10) are fixedly provided at the bottom of the mounting plate (9), wherein the lower ends of the plurality of support plates (10) are all connected to the top of the crossbeam bracket (2), and the plurality of support plates (10) are radially distributed.

3. A beam support according to claim 1, characterized in that: The limiting mechanism comprises a limiting ring (4), and the steel cable (1) passes through the limiting ring (4).

4. A beam support according to claim 1, characterized in that: Rollers (11) are rotatably provided on both sides of the crossbeam support (2), and the steel cable (1) is slidably connected to the corresponding rollers (11).

5. A beam support according to claim 4, characterized in that: The circumferential wall of the roller (11) is provided with a limiting groove.

6. A beam support according to claim 5, characterized in that: The groove wall of the limiting groove is arranged in an arc shape.

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