A modular telescopic device

Abstract

This invention provides a modular expansion joint device, including a water-stop structure. The water-stop structure comprises a stainless steel water-stop body and water-stop protrusions. The stainless steel water-stop body has excellent flexibility and corrosion resistance, enabling it to adapt to the expansion and contraction caused by the temperature deformation of the bridge, maintaining stable water-stopping performance, ensuring the safe operation of the bridge, and effectively resisting harsh environmental erosion, slowing down the aging process, thereby extending the service life of the water-stop structure. The water-stop protrusions are located on the connecting ends of the stainless steel water-stop body and can tightly fit with the grooves of the side beam steel and the middle beam steel, respectively, so that adjacent middle beam steels and side beam steels are connected as a whole through the water-stop structure. Due to the good elasticity and sealing performance of the water-stop protrusions, when the bridge undergoes expansion and contraction deformation, the water-stop protrusions can always maintain a tight fit with the grooves of the side beam steel and the middle beam steel, improving the water-stopping effect and reducing the risk of leakage.

Description

Technical Field

[0001] This utility model relates to the field of bridge expansion joint technology, and in particular to a modular expansion joint. Background Technology

[0002] With the accelerated pace of industrialization and the continuous improvement of urbanization, the transportation industry has ushered in unprecedented development opportunities, while also facing more severe challenges. The rapid increase in transportation demand has led to the continuous expansion of the construction scale of infrastructure such as bridges, and the performance requirements for bridge expansion joints have also increased accordingly.

[0003] Traditional modular expansion joints mostly use rubber waterstops. As a key component of bridge expansion joints, the rubber waterstop's main function is to ensure the sealing of the expansion joints, preventing the intrusion of moisture and other harmful substances, thereby protecting the stability and durability of the bridge structure. However, a series of problems have gradually emerged during the long-term use of rubber waterstops: for example, prolonged exposure to harsh environments such as strong sunlight, high temperatures, and humidity can accelerate the aging process of the rubber material, leading to a gradual decline in its elasticity and sealing performance, significantly reducing its water-stopping effect, and even potentially causing leakage and other safety hazards, seriously threatening the safe operation of the bridge. Furthermore, bridges are subjected to the dual challenges of heavy traffic loads and the natural environment. The repeated action of traffic loads, as well as temperature changes and wind and rain erosion in the natural environment, further accelerate the aging process of the rubber waterstops, shortening their service life. Once the rubber waterstop fails, it will not only lead to the loss of the seal at the expansion joint, but may also cause more serious structural damage and safety hazards.

[0004] For example, application number CN202411106139.4 discloses an easy-to-maintain modular telescopic device and maintenance method.

[0005] In view of the above, this utility model is hereby proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a modular expansion joint to address the design flaws of existing modular expansion joints' rubber waterstop strips. These strips are prone to aging and poor durability under long-term harsh environments, leading to a significant reduction in water-stopping effectiveness and even failure, causing leaks and other safety hazards that affect the safe operation of bridges. The preferred technical solutions provided by this utility model and their numerous technical effects are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This utility model provides a modular telescopic device, including a water-stopping structure. The water-stopping structure includes a stainless steel water-stopping body and water-stopping protrusions. The water-stopping protrusions are disposed on the connecting end of the stainless steel water-stopping body and can be tightly fitted with the grooves of the side beam steel and the middle beam steel respectively, so that two adjacent middle beam steels or the side beam steel and its adjacent middle beam steel are connected to form an integral whole through the water-stopping structure.

[0009] Preferably, the water-stop protrusion includes a first rubber water-stop protrusion, which is formed by vulcanization bonding with the stainless steel water-stop body, and the shape of the first rubber water-stop protrusion is adapted to the groove of the side beam steel and the groove of the middle beam steel respectively.

[0010] Preferably, the water-stop protrusion includes water-swellable water-stop adhesive, and the connecting ends of the stainless steel water-stop body form adhesive injection spaces between the grooves of the side beam steel and the grooves of the middle beam steel, respectively.

[0011] Preferably, it also includes a positioning device, which is detachable and is installed on two adjacent middle beams or on the side beams and the adjacent middle beams, and is detachably connected to the stainless steel waterstop body so that the stainless steel waterstop body is installed at a preset height position.

[0012] Preferably, the distance between two adjacent positioning devices is 1m to 3m.

[0013] Preferably, it further includes a limiting device, which includes a limiting tape disposed at the outer edge of the injection space to limit the filling range of the water-swellable sealing adhesive.

[0014] Preferably, the limiting tape is provided with an injection port for guiding water-swellable sealing adhesive into and filling the groove; the distance between two adjacent injection ports is 1m to 3m.

[0015] Preferably, the water-stop protrusion includes a second rubber water-stop protrusion, which has an opening for the connecting end of the stainless steel water-stop body to enter; the upper and lower walls of the opening are provided with staggered waterproof protrusions.

[0016] Preferably, the opening is provided with a hollow cavity, and the hollow cavity is provided with a limiting protrusion that is adapted to the connecting end of the stainless steel waterstop body.

[0017] Preferably, the connecting end of the stainless steel waterstop body has an L-shaped structure.

[0018] The preferred technical solution of this utility model can also produce at least the following technical effects:

[0019] This invention aims to address the shortcomings of existing modular expansion joints with rubber waterstop strips. These strips are prone to aging and have poor durability under harsh long-term environments, leading to a significant reduction in water-stopping effectiveness and even failure, causing leaks and other safety hazards that affect the safe operation of bridges. This invention provides a modular expansion joint device, including a waterstop structure comprising a stainless steel waterstop body and waterstop protrusions. The waterstop protrusions are located on the connecting ends of the stainless steel waterstop body and can tightly fit with the grooves of the side beams and middle beams, respectively. This allows adjacent middle beams and side beams to be connected as a whole through the waterstop structure. The stainless steel waterstop body of this invention has excellent flexibility and corrosion resistance, effectively adapting to bridge expansion and contraction while maintaining structural stability. It maintains stable water-stopping performance over a long period, ensuring the safe operation of the bridge and effectively resisting erosion from harsh environments such as strong radiation, high temperature, low temperature, strong acids and alkalis, and humidity, slowing down the aging process and extending the service life of the waterstop structure. The water-stop protrusions are respectively installed at the two connecting ends of the stainless steel water-stop body, and fit tightly with the grooves of the side beam steel and the middle beam steel to form a highly efficient water-stop structure. Because the water-stop protrusions have good elasticity and sealing performance, when the bridge undergoes expansion and contraction deformation, the water-stop protrusions can always maintain a tight fit with the grooves of the side beam steel and the middle beam steel, improving the water-stopping effect and reducing the risk of leakage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the unassembled water-stop structure of a modular expansion joint.

[0022] Figure 2 yes Figure 1 A cross-sectional view along the AA direction after the water-stop structure has been installed;

[0023] Figure 3 yes Figure 1 A cross-sectional view along the BB direction after the water-stop structure has been installed;

[0024] Figure 4 This is a schematic diagram of the first type of water-stopping structure of a modular telescopic device provided by this utility model;

[0025] Figure 5 This is a schematic diagram of the second type of water-stopping structure of a modular telescopic device provided by this utility model;

[0026] Figure 6 This is a schematic diagram of the third type of water-stopping structure of a modular telescopic device provided by this utility model;

[0027] Figure 7 yes Figure 6 A magnified view of a portion of C.

[0028] In the picture:

[0029] 1. Stainless steel waterstop body; 11. Main body; 12. Connecting end; 121. Horizontal section; 122. Vertical section;

[0030] 2. First rubber waterproofing protrusion;

[0031] 3. Water-swellable sealant;

[0032] 4. Second rubber waterproof protrusion; 41. Opening; 411. Waterproof protrusion; 42. Hollow cavity; 43. First limiting protrusion; 44. Second limiting protrusion;

[0033] 5. Middle beam steel; 6. Side beam steel; 7. Positioning device; 8. Limiting tape. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] Example 1:

[0036] like Figures 1-4 As shown, this utility model provides a modular telescopic device, including a water-stopping structure. The water-stopping structure includes a stainless steel water-stopping body 1 and a water-stopping protrusion. The water-stopping protrusion is disposed on the connecting end 12 of the stainless steel water-stopping body 1 and can be tightly fitted with the groove of the side beam steel 6 and the groove of the middle beam steel 5 respectively, so that the two adjacent middle beam steels 5 and the side beam steel 6 and the adjacent middle beam steel 5 are connected to form an integral whole through the water-stopping structure.

[0037] The stainless steel waterstop body 1 possesses excellent flexibility and corrosion resistance, effectively adapting to bridge expansion and contraction while maintaining structural stability. It maintains stable waterstop performance over the long term, ensuring the safe operation of the bridge and effectively resisting harsh environmental erosion such as strong radiation, high and low temperatures, strong acids and alkalis, and humidity, slowing down aging and extending the service life of the waterstop structure. Waterstop protrusions are respectively located at the two connecting ends 12 of the stainless steel waterstop body 1, and can tightly fit with the grooves of the side beam steel 6 and the middle beam steel 5, forming a highly efficient waterstop structure. Due to the good elasticity and sealing performance of the waterstop protrusions, when the bridge undergoes expansion and contraction, the waterstop protrusions can always maintain a tight fit with the grooves of the side beam steel 6 and the middle beam steel 5, improving the waterstop effect and reducing the risk of leakage.

[0038] Furthermore, the thickness of the stainless steel waterstop body 1 is 0.1mm-1.8mm, which meets the flexibility requirements of the telescopic device.

[0039] It should be noted that this utility model only improves the water-stopping structure of the telescopic device, and does not improve the structural design and arrangement of the side beam steel 6 and the middle beam steel 5. They all adopt existing technology, which will not be elaborated here.

[0040] As an optional implementation, such as Figure 2 , Figure 3 , Figure 4 As shown, the water-stop protrusion includes a first rubber water-stop protrusion 2. The first rubber water-stop protrusion 2 and the connecting end 12 of the stainless steel water-stop body 1 are formed by vulcanization bonding. The shape of the first rubber water-stop protrusion 2 is adapted to the groove of the side beam steel 6 and the groove of the middle beam steel 5, respectively.

[0041] Using pry bars and other installation tools, the first rubber water-stop protrusions 2 are installed into their corresponding grooves, so that the middle beam steel 5 and the side beam steel 6 are connected to the middle beam steel 5 through the water-stop structure to form a whole. Furthermore, the elastic sealing effect of the water-stop protrusions ensures a tight fit between the water-stop structure and the groove.

[0042] It should be noted that the cross-section of the first rubber water-stop protrusion 2 can be designed according to the cross-section of the groove of the side beam steel 6 and the groove of the middle beam steel 5, so that the first rubber water-stop protrusion 2 and the corresponding groove can maintain a tight fit.

[0043] As an optional implementation, such as Figure 4 As shown, the connecting end 12 of the stainless steel waterstop body 1 has an L-shaped structure.

[0044] Furthermore, the cross-section of the main body 11 of the stainless steel waterstop body 1 located between the side beam steel 6 and the middle beam steel 5 is V-shaped, which improves the rigidity of the stainless steel waterstop body 1 and meets the requirements of bridge expansion and contraction deformation.

[0045] The horizontal section 121 of the connecting end 12 of the stainless steel waterstop body 1 is at least partially located within the groove, and the vertical section 122 of the connecting end 12 is completely located within the groove and extends downward. This arrangement increases the contact area between the stainless steel waterstop body 1 and the waterstop protrusion, thereby improving the strength of the connection between the two.

[0046] Example 2:

[0047] The difference between this embodiment and Embodiment 1 is that: Figure 5 As shown, the water-stop protrusion includes water-swellable water-stop adhesive 3, and the connecting end 12 of the stainless steel water-stop body 1 forms an adhesive injection space between the groove of the side beam steel 6 and the groove of the middle beam steel 5.

[0048] Water-swellable sealant 3 is a single-component sealant that swells upon contact with water, cures in moisture, and provides elastic sealing. It has a dual sealing mechanism that combines the elastic sealing properties of rubber with its own volume expansion upon contact with water, resulting in excellent water-stopping performance.

[0049] Water-swellable sealant 3 is injected into the injection space formed between the stainless steel sealant body 1 and the grooves of the side beam steel 6 and the middle beam steel 5.

[0050] As an optional implementation, a positioning device 7 is also included. The positioning device 7 is detachably mounted on the side beam steel 6 and the middle beam steel 5 and is detachably connected to the stainless steel waterstop body 1 so that the stainless steel waterstop body 1 is installed at a preset height position.

[0051] Furthermore, the positioning device 7 includes a mirror suction cup limiting device or an adhesive positioning device 7 as in the prior art, which facilitates installation and disassembly.

[0052] One end of the positioning device 7 is adsorbed or pasted on the top plate of the side beam steel 6 and the middle beam steel 5, and the other end is adsorbed or pasted on the main body 11 of the stainless steel waterstop body 1. During the installation process, it can accurately position the stainless steel waterstop body 1 at the height center between two adjacent middle beam steels 5 and between the side beam steel 6 and its adjacent middle beam steel 5, keeping the position of the stainless steel waterstop body 1 stable, while facilitating the injection of water-swellable sealing adhesive 3 into the groove.

[0053] As an optional implementation, the distance between two adjacent positioning devices 7 is 1m to 3m.

[0054] This design satisfies both the accuracy of positioning the stainless steel waterstop body 1 and the reasonable control of costs.

[0055] As an optional implementation, a limiting device is also included, which includes a limiting tape 8 disposed at the outer edge of the injection space to limit the filling range of the water-swellable sealing adhesive 3.

[0056] Furthermore, the limiting tape 8 is positioned and pasted on the outer edge of the groove of the corresponding side beam steel 6 and the outer edge of the groove of the middle beam steel 5 of the stainless steel waterstop body 1, or on the outer edge of the groove of the side beam steel 6 and the outer edge of the groove of the middle beam steel 5.

[0057] The limiting tape 8 is used to limit the filling range of the water-swellable sealing adhesive 3, and works in conjunction with the positioning device 7 to ensure that the stainless steel sealing body 1 is accurately positioned at the height center between two adjacent middle beams 5 and between the side beams 6 and their adjacent middle beams 5.

[0058] The limiting tape 8 includes foam tape.

[0059] As an optional implementation, the limiting tape 8 is provided with an injection port for guiding the water-swellable sealing adhesive 3 into and filling the groove; the distance between two adjacent injection ports is 1m to 3m.

[0060] The injection port is used to guide the water-swellable sealant 3 to accurately enter and fill the injection space formed between the stainless steel sealant body 1, the groove of the side beam steel 6, and the groove of the middle beam steel 5.

[0061] This design ensures that the water-swellable sealant 3 is evenly distributed within the injection space, improving the sealing effect, while also increasing construction efficiency and facilitating the work of operators.

[0062] Example 3:

[0063] The difference between this embodiment and Embodiment 1 is that: Figure 6 , Figure 7 As shown, the water-stop protrusion includes a second rubber water-stop protrusion 4, which has an opening 41 for the connecting end 12 of the stainless steel water-stop body 1 to enter; the upper and lower walls of the opening 41 are provided with staggered waterproof protrusions 411.

[0064] This configuration ensures that the waterproof protrusion 411 is in close contact with the horizontal section 121 of the connection end 12 of the stainless steel waterstop body 1, increasing the friction between the two and improving the connection stability between the first rubber waterstop protrusion 2 and the stainless steel waterstop body 1. At the same time, it also forms an effective waterproof barrier.

[0065] As an optional implementation, a hollow cavity 42 is provided inside the opening 41, and a limiting protrusion adapted to the connecting end 12 of the stainless steel waterstop body 1 is provided inside the hollow cavity 42.

[0066] Furthermore, the cross-section of the first rubber water-stop protrusion 2 is similar to a G-shape. The limiting protrusion includes a first limiting protrusion 43 and a second limiting protrusion 44 disposed opposite each other within the hollow cavity 42, together forming a limiting space for positioning the connecting end 12 of the stainless steel water-stop body 1. The first limiting protrusion 43 extends toward the connection between the horizontal section 121 and the vertical section 122 of the connecting end 12 of the stainless steel water-stop body 1, and abuts against the upper wall surface of its connection. The shape of the second limiting protrusion 44 is adapted to the connecting end 12 of the stainless steel water-stop body 1, so that the lower wall surface of the second limiting protrusion 44 is in close contact with the upper wall surface of the connecting end 12 of the stainless steel water-stop body 1. Through the synergistic effect of the first limiting protrusion 43 and the second limiting protrusion 44, the connection strength between the first rubber water-stop protrusion 2 and the stainless steel water-stop body 1 is further enhanced.

[0067] Using pry bars or other installation tools, the second rubber water-stop protrusions 4 are installed into their corresponding grooves, so that the middle beam steel 5 and the side beam steel 6 are connected to the middle beam steel 5 through the water-stop structure to form a whole. Furthermore, the elastic sealing effect of the water-stop protrusions ensures a tight fit between the water-stop structure and the groove.

[0068] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0069] In the description of this utility model, it should be noted that, unless otherwise stated, "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 accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "a particular example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A modular telescopic device, characterized in that, The system includes a water-stopping structure, which comprises a stainless steel water-stopping body and water-stopping protrusions. The water-stopping protrusions are disposed on the connecting ends of the stainless steel water-stopping body and can be tightly fitted with the grooves of the side beam steel and the middle beam steel, respectively, so that adjacent middle beam steels or side beam steels and their adjacent middle beam steels are connected to form an integral whole through the water-stopping structure.

2. A telescopic device according to claim 1, characterized in that The water-stop protrusion includes a first rubber water-stop protrusion, which is formed by vulcanization bonding with the stainless steel water-stop body, and the shape of the first rubber water-stop protrusion is adapted to the groove of the side beam steel and the groove of the middle beam steel respectively.

3. A telescopic device according to claim 1, characterized in that The water-stop protrusion includes water-swellable water-stop adhesive, and the connecting ends of the stainless steel water-stop body form adhesive injection spaces between the grooves of the side beam steel and the grooves of the middle beam steel, respectively.

4. A telescopic device according to claim 3, wherein It also includes a positioning device, which is detachably mounted on two adjacent middle beams or on the side beams and their adjacent middle beams, and is detachably connected to the stainless steel waterstop body so that the stainless steel waterstop body is installed at a preset height position.

5. A telescopic device according to claim 4, wherein The distance between two adjacent positioning devices is 1m to 3m.

6. A telescopic device according to claim 3, wherein It also includes a limiting device, which includes a limiting tape disposed at the outer edge of the injection space to limit the filling range of the water-swellable sealing adhesive.

7. A telescopic device according to claim 6, characterized in that The limiting tape is provided with an injection port for guiding water-swellable sealing adhesive into and filling the groove; the distance between two adjacent injection ports is 1m to 3m.

8. A telescopic device according to claim 1, characterized in that The water-stop protrusion includes a second rubber water-stop protrusion, which has an opening for the connecting end of the stainless steel water-stop body to enter; the upper and lower walls of the opening are provided with staggered waterproof protrusions.

9. A telescopic device according to claim 8, characterized in that The opening is provided with a hollow cavity, and the hollow cavity is provided with a limiting protrusion that is adapted to the connecting end of the stainless steel waterstop body, for positioning the connecting end of the stainless steel waterstop body.

10. A telescopic device according to any one of claims 1-9, characterized in that The connecting end of the stainless steel waterstop body has an L-shaped structure.

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