Butt joint type expansion joint for bridge

Abstract

The utility model belongs to the technical field of bridge expansion joints, and discloses a butt joint type expansion joint for a bridge, which comprises a first bridge base and a second bridge base, sealing strips are mounted at the top ends of the first bridge base and the second bridge base, a first toothed plate is mounted at the top end of the first bridge base, and a second toothed plate is mounted at the top end of the second bridge base. A second toothed plate is mounted at the top end of the second bridge base, a sliding plate is mounted at the top end of the second toothed plate, a plurality of trapezoidal top blocks are mounted on the opposite sides of the first toothed plate and the second toothed plate, a plurality of first sliding grooves are formed in the top ends of the first toothed plate and the second toothed plate, and first sliding blocks are slidably mounted in the first sliding grooves; a lifting block is installed at the top end of the first sliding block. According to the butt joint type expansion joint for the bridge, the influence of accumulation of silt dirt at the joint of the first toothed plate and the second toothed plate on use of the expansion joint can be reduced, meanwhile, part of the silt dirt can be ejected out through movement of the first toothed plate and the second toothed plate, and then the use effect of the butt joint type expansion joint for the bridge is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge expansion joints, and more specifically, particularly relates to a butt-jointed expansion joint for bridges. Background Art

[0002] Bridge expansion joint is an important structural device used to connect and separate two adjacent parts of a bridge structure. It is usually made of metal or rubber materials and is designed to allow the bridge structure to expand and contract freely under temperature changes and structural deformations while maintaining the flatness of the bridge deck and the integrity of the connection.

[0003] When some of the butt-jointed expansion joints used in current bridges are in use, mud and dirt can easily enter the joints where the tooth plates are connected. Since the butt-jointed expansion joints used in bridges usually have a long service life, mud and dirt can easily accumulate in the joints. Long-term accumulation can easily hinder the movement of the tooth plates, reduce the movement range of the bridge, and affect the use effect of the expansion joints.

[0004] Therefore, in view of this, research and improvement are conducted on the existing structure and defects, and a butt-jointed expansion joint for bridges is provided, in order to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a butt-jointed expansion joint for a bridge, which is achieved by the following specific technical means:

[0006] A butt-jointed expansion joint for a bridge comprises a first bridge base and a second bridge base, wherein sealing strips are installed on the top ends of the first bridge base and the second bridge base, a first tooth plate is installed on the top end of the first bridge base, a second tooth plate is installed on the top end of the second bridge base, a slide plate is installed on the top end of the second tooth plate, a plurality of trapezoidal top blocks are installed on opposite sides of the first tooth plate and the second tooth plate, a plurality of first slide grooves are provided on the top ends of the first tooth plate and the second tooth plate, a first slider is slidably installed in the first slide groove, a lifting block is installed on the top end of the first slider, a lifting groove is provided on one side of the lifting block, a tension spring is installed on the bottom end of the first slider, and the other end of the tension spring is connected to the bottom end of the first slide groove, a plurality of sealing assemblies are installed on one side of the first tooth plate and the second tooth plate, and a buffer assembly is installed on the opposite side of the first tooth plate and the second tooth plate.

[0007] Furthermore, the first tooth plate and the second tooth plate are connected in an alternating manner.

[0008] Furthermore, a plurality of the first sliding grooves on the first tooth plate and the second tooth plate are distributed in a staggered manner.

[0009] Further, one side of the trapezoidal top block is in close contact with the top end of the jacking groove, and a rubber pad is provided at the position where the jacking groove is in close contact with the trapezoidal top block.

[0010] Further, the sealing assembly includes a pair of second chutes, which are opened at positions on the first tooth plate and the second tooth plate close to both sides of the trapezoidal top block. A trapezoidal sealing block is slidably installed in the second chutes, and one side of the trapezoidal sealing block extends to the outside of the second chutes and is in close contact with one side of the lifting block. A first compression spring is installed on one side of the trapezoidal sealing block, and the other end of the first compression spring is connected to one side of the second chutes.

[0011] Further, one side of the trapezoidal sealing block is in close contact with one side of the trapezoidal top block.

[0012] Further, the buffer assembly includes a pair of third chutes, which are opened at the bottom ends of the opposite sides of the first tooth plate and the second tooth plate. A pair of third sliders are symmetrically installed in the pair of third chutes. A second compression spring is installed on the opposite sides of the pair of third sliders, and the other end of the second compression spring is connected to one side of the third chutes.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the butt joint type expansion joint for bridges of the utility model, through the cooperation of the first tooth plate, the second tooth plate, the sliding plate, the trapezoidal top block, the first chute, the first slider, the lifting block, the jacking groove, the tension spring, the second chute, the trapezoidal sealing block, the first compression spring, the third chute, the third slider and the second compression spring, it is convenient to reduce the influence on the use of the expansion joint caused by the accumulation of sediment and dirt at the connection of the first tooth plate and the second tooth plate. At the same time, through the movement of the first tooth plate and the second tooth plate, a part of the sediment and dirt can be jacked out, thereby improving the use effect of the butt joint type expansion joint for bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of the utility model.

[0016] Figure 2 is a side sectional view of a part of the structure of the utility model.

[0017] Figure 3 is a side sectional view of a part of the structure of the utility model.

[0018] Figure 4 is the Figure 1 enlarged schematic diagram of part A in the utility model.

[0019] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0020] 1. First bridge base; 2. Second bridge base; 3. Sealing strip; 4. First toothed plate; 5. Second toothed plate; 6. Slide plate; 7. Trapezoidal top block; 8. First chute; 9. First slider; 10. Lifting block; 11. Jacking groove; 12. Tensile spring; 13. Second chute; 14. Trapezoidal sealing block; 15. First compression spring; 16. Third chute; 17. Third slider; 18. Second compression spring. Specific implementation mode

[0021] The following further describes the implementation mode of the present utility model in detail in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] Embodiment:

[0025] As shown in the attached Figure 1 to the attached Figure 4 figure:

[0026] The utility model provides a butt-jointed expansion joint for a bridge, comprising a first bridge base 1 and a second bridge base 2, a sealing strip 3 is installed on the top of the first bridge base 1 and the second bridge base 2, a first tooth plate 4 is installed on the top of the first bridge base 1, a second tooth plate 5 is installed on the top of the second bridge base 2, a slide plate 6 is installed on the top of the second tooth plate 5, a plurality of trapezoidal top blocks 7 are installed on opposite sides of the first tooth plate 4 and the second tooth plate 5, a plurality of first slide grooves 8 are arranged on the tops of the first tooth plate 4 and the second tooth plate 5, a first slider 9 is slidably installed in the first slide groove 8, a lifting block 10 is installed on the top of the first slider 9, a lifting groove 11 is arranged on one side of the lifting block 10, a tension spring 12 is installed on the bottom end of the first slider 9, and the other end of the tension spring 12 is connected to the bottom end of the first slide groove 8, a plurality of sealing components are installed on one side of the first tooth plate 4 and the second tooth plate 5, and a buffer component is installed on the opposite side of the first tooth plate 4 and the second tooth plate 5.

[0027] The first tooth plate 4 and the second tooth plate 5 are connected in an alternating manner, so that the first tooth plate 4 and the second tooth plate 5 can move together with the movement of the first bridge foundation 1 and the second bridge foundation 2 .

[0028] The first slide grooves 8 on the first tooth plate 4 and the second tooth plate 5 are distributed in a staggered manner. When the first tooth plate 4 or the second tooth plate 5 moves, the trapezoidal top block 7 can lift the adjacent lifting block 10 .

[0029] Among them, one side of the trapezoidal top block 7 is in close contact with the top of the jacking groove 11, and the jacking groove 11 is provided with a rubber pad at the position in close contact with the trapezoidal top block 7. Since the inclined surface of the trapezoidal top block 7 is in close contact with the top of the adjacent jacking groove 11, when the trapezoidal top block 7 moves toward the inside of the jacking groove 11 along with the first tooth plate 4 or the second tooth plate 5, the inclined surface of the trapezoidal top block 7 can gradually lift the trapezoidal top block 7 upward under the limiting action of the jacking groove 11, thereby avoiding the influence of the accumulation of mud and dirt on the movement of the first tooth plate 4 or the second tooth plate 5, wherein the rubber pad can reduce the entry of mud and dirt into the jacking groove 11.

[0030] Among them, the sealing assembly includes a pair of second slide grooves 13, and the pair of second slide grooves 13 are opened on the first tooth plate 4 and the second tooth plate 5 at positions close to the two sides of the trapezoidal top block 7. A trapezoidal sealing block 14 is slidably installed in the second slide groove 13, and one side of the trapezoidal sealing block 14 extends to the outside of the second slide groove 13 and is tightly attached to one side of the lifting block 10. A first compression spring 15 is installed on one side of the trapezoidal sealing block 14, and the other end of the first compression spring 15 is connected to one side of the second slide groove 13. The surrounding sides of the trapezoidal sealing block 14 are tightly attached to the lifting block 10, the trapezoidal top block 7, and the first tooth plate 4 and the second tooth plate 5, respectively, which can prevent mud and dirt from falling into the bottom of the trapezoidal top block 7.

[0031] Wherein, one side of the trapezoidal sealing block 14 is in close contact with one side of the trapezoidal top block 7.

[0032] Wherein, the buffer assembly includes a pair of third chutes 16. The pair of third chutes 16 are opened at the bottom ends of the opposite sides of the first toothed plate 4 and the second toothed plate 5. A pair of third sliders 17 are symmetrically installed in the pair of third chutes 16. A pair of second compression springs 18 are installed on the opposite sides of the pair of third sliders 17, and the other ends of the second compression springs 18 are connected to one side of the third chutes 16. When the first bridge base 1 and the second bridge base 2 drive the first toothed plate 4 and the second toothed plate 5 to move, the pair of third sliders 17 are mutually extruded, thereby extruding the second compression springs 18. Thus, through the deformation of the second compression springs 18, external impacts or vibrations are converted into elastic potential energy, achieving the damping effect and reducing the influence on the overall structure of the butt joint type expansion joint caused by the movement of the first bridge base 1 and the second bridge base 2.

[0033] The working principle of this embodiment: When the butt joint type expansion joint for the bridge is in use, the inclined surface of the trapezoidal top block 7 is in close contact with the top end of the adjacent jacking groove 11. When the trapezoidal top block 7 moves into the interior of the jacking groove 11 along with the first toothed plate 4 or the second toothed plate 5, the inclined surface of the trapezoidal top block 7 can gradually jack up the trapezoidal top block 7 under the limiting action of the jacking groove 11, thereby avoiding the influence on the movement of the first toothed plate 4 or the second toothed plate 5 caused by the accumulation of sediment and dirt. When the trapezoidal top block 7 moves out of the jacking groove 11 along with the first toothed plate 4 and the second toothed plate 5, under the reset action of the tension spring 12, the lifting block 10 descends together, enabling the trapezoidal top block 7 to always be in close contact with one side of the top end of the jacking groove 11. Wherein, the rubber pad can reduce the entry of sediment and dirt into the jacking groove 11. At the same time, under the rebounding action of the first compression spring 15, the circumferences of the trapezoidal sealing block 14 are in close contact with the lifting block 10, the trapezoidal top block 7, and the first toothed plate 4 and the second toothed plate 5 respectively, which can prevent sediment and dirt from falling to the bottom of the trapezoidal top block 7.

[0034] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A butt-jointed expansion joint for a bridge, comprising a first bridge foundation (1) and a second bridge foundation (2), characterized in that: The top ends of the first bridge base (1) and the second bridge base (2) are provided with sealing strips (3); the top ends of the first bridge base (1) are provided with a first tooth plate (4); the top ends of the second bridge base (2) are provided with a second tooth plate (5); the top ends of the second tooth plate (5) are provided with a slide plate (6); the first tooth plate (4) and the second tooth plate (5) are provided with a plurality of trapezoidal top blocks (7) on opposite sides; the top ends of the first tooth plate (4) and the second tooth plate (5) are provided with a plurality of first slide grooves (8); A first slider (9) is slidably installed in a slide groove (8), a lifting block (10) is installed at the top of the first slider (9), a lifting groove (11) is provided on one side of the lifting block (10), a tension spring (12) is installed at the bottom end of the first slider (9), and the other end of the tension spring (12) is connected to the bottom end of the first slide groove (8), a plurality of sealing components are installed on one side of the first tooth plate (4) and the second tooth plate (5), and a buffer component is installed on the opposite side of the first tooth plate (4) and the second tooth plate (5).

2. The butt-jointed expansion joint for a bridge as claimed in claim 1, characterized in that: The first tooth plate (4) and the second tooth plate (5) are connected in an alternating manner.

3. The butt-jointed expansion joint for a bridge as claimed in claim 1, characterized in that: The plurality of first sliding grooves (8) located on the first tooth plate (4) and the second tooth plate (5) are distributed in a staggered manner.

4. The butt-jointed expansion joint for a bridge as claimed in claim 1, characterized in that: One side of the trapezoidal top block (7) is in close contact with the top end of the jacking groove (11), and a rubber pad is provided at a position of the jacking groove (11) in close contact with the trapezoidal top block (7).

5. The butt-jointed expansion joint for a bridge as claimed in claim 1, characterized in that: The sealing assembly comprises a pair of second slide grooves (13), wherein the pair of second slide grooves (13) are arranged on the first tooth plate (4) and the second tooth plate (5) at positions close to both sides of the trapezoidal top block (7), a trapezoidal sealing block (14) is slidably installed in the second slide groove (13), and one side of the trapezoidal sealing block (14) extends to the outside of the second slide groove (13) and is tightly attached to one side of the lifting block (10), a first compression spring (15) is installed on one side of the trapezoidal sealing block (14), and the other end of the first compression spring (15) is connected to one side of the second slide groove (13).

6. The butt-jointed expansion joint for a bridge as claimed in claim 5, characterized in that: One side of the trapezoidal sealing block (14) is in close contact with one side of the trapezoidal top block (7).

7. The butt-jointed expansion joint for a bridge as claimed in claim 1, characterized in that: The buffer assembly comprises a pair of third slide grooves (16), the pair of third slide grooves (16) are arranged at the bottom ends of the opposite sides of the first tooth plate (4) and the second tooth plate (5), a pair of third sliders (17) are symmetrically installed in the pair of third slide grooves (16), a pair of third sliders (17) are installed with second compression springs (18) on the opposite sides, and the other end of the second compression spring (18) is connected to one side of the third slide groove (16).

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