Beam end waterproofing device

Abstract

The utility model relates to bridge engineering field, concretely relates to a beam end waterproof device, including telescopic mechanism, telescopic mechanism both sides are equipped with connecting mechanism respectively, two connecting mechanism are used for connecting expansion joint both sides respectively, the telescopic mechanism includes elastomer, the elastomer is inlayed with telescopic plate, telescopic plate both ends are equipped with the connecting section respectively, two connecting sections are linked with connecting mechanism respectively, telescopic plate sets up as the wave shape. Through setting up the wave shape telescopic plate in the elastomer, and connecting both ends of telescopic plate with expansion joint both sides, and the telescopic plate provides the supporting action for the elastomer, makes the adhesive between the elastomer and connecting mechanism not easy to fall off, and the elastomer is not easy to damage, and the telescopic plate can change simultaneously with the elastomer, under the double action of elastomer and telescopic plate, makes the whole telescopic mechanism keep good elastic property for a long time, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering, and in particular to a waterproofing device for beam ends. Background Technology

[0002] With the increasing number of bridges, expansion joints between beams, which adapt to the temperature displacement of the beams, play a very important role as transitional connecting components. On the one hand, they require a smooth transition between beams and adapt to the expansion and contraction deformation of the beams caused by temperature changes. On the other hand, they also prevent water from flowing into the beam body and the top of the piers through the beam ends.

[0003] Currently, there are two main types of expansion joints used for beam end waterproofing. One type is the steel section with rubber strips. This type of expansion joint uses a sunken, all-rubber material for waterproofing and sealing. Due to the long-term accumulation of slag inside the rubber strip and the effects of sun and rain, it is prone to aging and damage, resulting in leakage in a short time and requiring frequent replacement of the rubber strip. The other type is the integral elastomer type. This type of expansion joint uses polyurethane cast on-site, which has high requirements for the treatment of the bonding surface. Similarly, the bridge deck is subject to long-term sun and rain, as well as cumulative stretching, making the bonding surface prone to detachment. This leads to serious water seepage at the beam end, requiring frequent application of adhesive or even recasting and replacement of the polyurethane material.

[0004] Therefore, a technical solution is needed to address the technical problems of waterproofing devices used at beam ends, which are prone to damage and require frequent application of adhesives, increasing maintenance frequency, due to the use of sealing strips or on-site pouring of polyurethane. Utility Model Content

[0005] The purpose of this invention is to overcome the technical problems of existing waterproofing devices for beam ends, which use sealing strips or on-site poured polyurethane, are easily damaged and require frequent application of adhesive, increasing the maintenance frequency. This invention provides a waterproofing device for beam ends.

[0006] This utility model provides a beam end waterproofing device, including a telescopic mechanism. The telescopic mechanism is provided with connecting mechanisms on both sides. The two connecting mechanisms are respectively used to connect the two sides of the expansion joint. The telescopic mechanism includes an elastic body. A telescopic plate is embedded in the elastic body. The telescopic plate is provided with connecting sections at both ends. The two connecting sections are respectively connected to the connecting mechanisms. The telescopic plate is set in a wave shape.

[0007] This utility model discloses a maintenance-free waterproof beam end device. In use, two connecting mechanisms are connected to both sides of the expansion joint, and the expansion mechanism is located in the expansion joint. When the beams expand and contract due to temperature changes, the elastic body of the expansion mechanism undergoes adaptive deformation. At the same time, a corrugated expansion plate is provided in the elastic body. The two ends of the expansion plate are indirectly connected to the side of the expansion joint through connecting sections and connecting mechanisms. During the deformation of the expansion joint, the expansion plate can also be pulled to undergo adaptive deformation. The expansion plate provides support for the elastic body, making it less likely for the adhesive between the elastic body and the connecting mechanism to fall off, and the elastic body to be less prone to damage. Under the dual action of the elastic body and the expansion plate, the entire expansion mechanism maintains good elastic performance for a long time and has a longer service life.

[0008] Preferably, the telescopic plate includes at least two V-shaped segments, and several V-shaped segments are connected in sequence, forming a V-shaped telescopic range on the inner side of each V-shaped segment and between two adjacent V-shaped segments.

[0009] Several V-shaped segments are connected in sequence to form a wave shape. During the expansion and contraction of the expansion joint, the expansion and contraction zone is compressed or stretched, thereby adapting to the deformation of the elastic body and providing support for the elastic body.

[0010] Preferably, the elastomer has a plurality of cavities, and the cavities are arranged in a one-to-one correspondence with the expansion and contraction intervals.

[0011] This makes the elastomer more prone to contraction under stress, reduces damage to the elastomer's own structure during the expansion and contraction process of the expansion joint, and enables the elastomer to maintain its expansion and contraction function for a long time.

[0012] Preferably, the cross-section of the cavity is teardrop-shaped, with the smaller end facing the expansion / contraction range.

[0013] The teardrop-shaped cavity design refers to the cross-section of the cavity being teardrop-shaped, i.e., a cone shape with a large end and a small end. In the cavity within the V-shaped segment, the small end is positioned towards the inner corner of the V-shaped segment. In the cavity between two V-shaped segments, the small end is positioned towards the angle between the two V-shaped segments. During the expansion and contraction of the telescopic plate, the upper part of the V-shaped segment expands and contracts more significantly. By designing teardrop-shaped cavities that adapt to the expansion and contraction amplitude, the expansion and contraction of the elastomer can be made smoother, reducing the damage to the elastomer during the expansion and contraction process.

[0014] Preferably, the connecting mechanism includes an anchoring profile, one side of which is connected to the elastic body, and the other side is connected to a plurality of anchor bars, the end of which the anchor bar away from the anchoring profile is provided with a bent portion.

[0015] One side of the anchoring profile provides an adhesive surface for the elastomer, while the other side is connected to the sidewall of the expansion joint via anchor bars. The bend in the profile makes the anchor bars more securely embedded in the side of the expansion joint, thus enabling the installation of the elastomer at the expansion joint.

[0016] Preferably, the anchoring profile has a plurality of threaded holes on one side where the anchor bar is set, and the anchor bar is threadedly connected to the threaded holes one by one.

[0017] It achieves a detachable connection between the anchor bar and the anchoring profile, ensuring a stable connection and easy operation.

[0018] Preferably, the anchor bar is fitted with an anti-loosening nut, which abuts against the side of the anchoring profile.

[0019] Anti-loosening nuts can strengthen the connection between anchor bars and anchoring profiles, making it less likely for the anchor bars to loosen from the anchoring profiles.

[0020] Preferably, the anchoring profile is provided with a limiting hole, and the side of the anchoring profile connected to the elastic body is provided with an inlet / outlet groove. The inlet / outlet groove communicates with the limiting hole, and a limiting rod is provided in the limiting hole. The connecting section extends into the limiting hole through the inlet / outlet groove and is hung on the limiting rod.

[0021] The telescopic plate and the connecting mechanisms on both sides are detachable. With the support of the limit rod, the telescopic plate can adapt to the deformation of the expansion joint. At the same time, after the elastomer is damaged or aged, the limit rod can be removed to release the limitation on the telescopic plate, making the replacement of the elastomer easier and reducing the maintenance difficulty and cost.

[0022] Preferably, the limiting rod is a hollow structure, and the limiting rod is a structural component made of a water-swellable material.

[0023] When rainwater seeps in, the limiting rod expands to seal the limiting hole, preventing rainwater from continuing to penetrate downwards.

[0024] Preferably, the telescopic plate is a stainless steel structural component.

[0025] Stainless steel telescopic plates have good elasticity, maintaining their telescopic function over long-term use. They also have high strength, providing structural support for the elastomer, and are waterproof, corrosion-resistant, and have a long service life.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a beam end waterproofing device, which sets a corrugated expansion plate in the elastic body and connects the two ends of the expansion plate to both sides of the expansion joint. The expansion plate provides support for the elastic body, making it less likely for the adhesive between the elastic body and the connecting mechanism to fall off and for the elastic body to be damaged. 2. This utility model provides a waterproof device for beam ends. The telescopic plate can deform simultaneously with the elastic body. Under the dual action of the elastic body and the telescopic plate, the entire telescopic mechanism maintains good elastic performance for a long time and has a longer service life. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the cross-sectional structure of a beam end waterproofing device according to this utility model; Figure 2 This is a schematic diagram of the structure of the telescopic plate described in this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the anchoring profile described in this utility model; Figure 4 This is an isometric drawing of a beam end waterproofing device according to this utility model; Marked in the image: 1-Telescopic mechanism, 11-Elastic body, 111-Cavity, 12-Telescopic plate, 121-V-shaped section, 122-Connecting section, 2-Connecting mechanism, 21-Anchoring profile, 211-Threaded hole, 212-Limiting hole, 213-Inlet / outlet groove, 22-Anchor bar, 221-Bending part, 23-Anti-loosening nut, 24-Limiting rod. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0029] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0031] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0032] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0033] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0034] Example 1 like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a beam end waterproofing device includes a telescopic mechanism 1, with connecting mechanisms 2 on both sides of the telescopic mechanism 1. The two connecting mechanisms 2 are used to connect the two sides of the expansion joint. The telescopic mechanism 1 includes an elastic body 11, with a telescopic plate 12 embedded in the elastic body 11. The telescopic plate 12 has connecting sections 122 at both ends, and the two connecting sections 122 are connected to the connecting mechanisms 2 respectively. The telescopic plate 12 is wavy.

[0035] In use, the two connecting mechanisms 2 are connected to both sides of the expansion joint, and the expansion mechanism 1 is located in the expansion joint. When the beams expand and contract due to temperature changes, the elastic body 11 of the expansion mechanism 1 undergoes adaptive deformation. At the same time, a corrugated expansion plate 12 is provided in the elastic body 11. The two ends of the expansion plate 12 are indirectly connected to the side of the expansion joint through the connecting section 122 and the connecting mechanism 2. During the deformation of the expansion joint, the expansion plate 12 can also be pulled to undergo adaptive deformation. The expansion plate 12 provides support for the elastic body 11, making it less likely for the adhesive between the elastic body 11 and the connecting mechanism 2 to fall off, and the elastic body 11 is less likely to be damaged. Under the dual action of the elastic body 11 and the expansion plate 12, the entire expansion mechanism 1 maintains good elastic performance for a long time and has a longer service life.

[0036] The expansion joint 12 is formed by connecting several V-shaped segments 121 in sequence. Each V-shaped segment 121 includes two side plates, which are set at an angle and connected at their ends. A V-shaped expansion section is formed between the two side plates. The expansion joint 12 is made of stainless steel. The wavy part of the expansion joint 12 is embedded in the rubber elastomer 11 to provide support for the elastomer 11. The expansion section can be compressed or stretched during the expansion and contraction of the expansion joint.

[0037] Elastomer 11: The elastomer 11 is made of rubber and has several cavities 111 on it. Each cavity 111 extends through both ends of the elastomer 11 along its length. The cavities 111 correspond one-to-one with the expansion and contraction sections, making it easier for the elastomer 11 to contract under stress. This reduces the compression damage to the elastomer 11's own structure during the expansion and contraction of the expansion joint, allowing the elastomer 11 to maintain good expansion and contraction function over a long period. Furthermore, the cross-section of the aforementioned cavities 111 is designed in a teardrop shape, also known as a cone shape. The small end of the cavity 111 is set towards the expansion and contraction zone (that is, the small end of the cavity 111 inside the V-shaped segment 121 is set towards the inner corner of the V-shaped segment 121, and the small end of the cavity between the two V-shaped segments 121 is set towards the angle between the two V-shaped segments 121). During the expansion and contraction of the expansion plate, the upper part of the V-shaped segment 121 has a larger opening and closing range. By setting the teardrop-shaped cavity 111 that is adapted to the opening and closing range, the expansion and contraction of the elastic body 11 can be made smoother, and the damage to the elastic body 11 during the expansion and contraction process can be reduced.

[0038] Connection mechanism 2 includes an anchoring profile 21. One side of the anchoring profile 21 is bonded to the elastic body 11, and the other side is provided with several threaded holes 211. Each threaded hole 211 is threaded with an anchor bar 22. The end of the anchor bar 22 is provided with a bent part 221, which can be embedded more firmly on the side of the expansion joint. An anti-loosening nut 23 is fitted on the anchor bar 22. The anti-loosening nut 23 abuts against the side of the anchoring profile 21, which can play the role of vibration prevention and anti-loosening, making the connection between the anchor bar 22 and the anchoring profile 21 more stable.

[0039] Example 2 like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the anchoring profile 21 is provided with a limiting hole 212, which extends through both ends of the anchoring profile 21 along its length. A limiting rod 24 is provided in the limiting hole 212. An inlet / outlet groove 213 is provided on the side of the anchoring profile 21 that connects to the elastic body 11. The inlet / outlet groove 213 communicates with the limiting hole 212. The end of the connecting section 122 of the telescopic plate 12 extends into the limiting hole 212 through the inlet / outlet groove 213 and is hung on the limiting rod 24.

[0040] In this embodiment, the telescopic plate 12 is detachably connected to the connecting mechanisms 2 on both sides. With the support of the limiting rod 24, the telescopic plate 12 can adapt to the deformation of the expansion joint. At the same time, after the elastomer 11 is damaged or aged, the limiting rod 24 can be removed to release the limitation on the telescopic plate 12, making the replacement of the elastomer 11 easier and reducing the maintenance difficulty and maintenance cost.

[0041] Furthermore, the limiting rod 24 is configured as a hollow structure. The limiting rod 24 is a structural component made of a water-swellable material. In order to ensure that the limiting rod 24 has a certain strength, it is preferably made of EPDM rubber or natural rubber. When rainwater is immersed, the limiting rod 24 can expand to seal the limiting hole 212 and prevent rainwater from continuing to penetrate downwards.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproofing device for beam ends, characterized in that, The device includes a telescopic mechanism (1), and connecting mechanisms (2) are provided on both sides of the telescopic mechanism (1). The two connecting mechanisms (2) are used to connect the two sides of the expansion joint. The telescopic mechanism (1) includes an elastic body (11), and a telescopic plate (12) is embedded in the elastic body (11). The telescopic plate (12) is provided with connecting sections (122) at both ends. The two connecting sections (122) are connected to the connecting mechanisms (2) respectively. The telescopic plate (12) is set to a wave shape.

2. The beam end waterproofing device according to claim 1, characterized in that, The telescopic plate (12) includes at least two V-shaped segments (121), and several V-shaped segments (121) are connected in sequence, forming a V-shaped telescopic range on the inner side of each V-shaped segment (121) and between two adjacent V-shaped segments (121).

3. The beam end waterproofing device according to claim 2, characterized in that, The elastic body (11) is provided with a plurality of cavities (111), and the cavities (111) are configured one-to-one with the expansion and contraction intervals.

4. A beam end waterproofing device according to claim 3, characterized in that, The cross-section of the cavity (111) is set in the shape of a water droplet, and the small end is set towards the expansion and contraction interval.

5. A beam end waterproofing device according to claim 1, characterized in that, The connecting mechanism (2) includes an anchoring profile (21), one side of which is connected to the elastic body (11), and the other side is connected to a plurality of anchor bars (22). The anchor bars (22) have a bent portion (221) at one end away from the anchoring profile (21).

6. A beam end waterproofing device according to claim 5, characterized in that, The anchoring profile (21) has several threaded holes (211) on one side of the anchor bar (22), and the anchor bar (22) is threadedly connected to the threaded hole (211) one by one.

7. A beam end waterproofing device according to claim 6, characterized in that, An anti-loosening nut (23) is fitted on the anchor bar (22), and the anti-loosening nut (23) abuts against the side of the anchoring profile (21).

8. A beam end waterproofing device according to claim 5, characterized in that, The anchoring profile (21) is provided with a limiting hole (212). The side of the anchoring profile (21) connected to the elastic body (11) is provided with an inlet / outlet groove (213). The inlet / outlet groove (213) is connected to the limiting hole (212). A limiting rod (24) is provided in the limiting hole (212). The connecting section (122) extends into the limiting hole (212) through the inlet / outlet groove (213) and is hung on the limiting rod (24).

9. A beam end waterproofing device according to claim 8, characterized in that, The limiting rod (24) is a hollow structure and is a structural component made of a water-swellable material.

10. A beam end waterproofing device according to any one of claims 1-9, characterized in that, The telescopic plate (12) is a stainless steel structural component.

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