A waterproof component for expansion joints of existing railway bridges and an expansion joint structure

Abstract

This utility model provides a waterproof component and structure for existing railway bridge expansion joints, relating to the field of railway bridges. It includes a waterproof strip and an extrusion rope. The waterproof strip includes an expansion joint and a mounting joint. The expansion joint is wavy. The mounting joint is used to embed into the cavity of a profile, and the outer contour of the mounting joint matches the contour of the profile cavity. The mounting joint is made of flexible material and is connected to the end of the expansion joint. An expansion hole is provided on the mounting joint, the radial direction of which is on the same plane as the wavy extension direction. An opening communicating with the expansion hole is also provided on the mounting joint. The extrusion rope is used to pass through the expansion hole, and the diameter of the extrusion rope is larger than the diameter of the expansion hole in its natural state. This utility model eliminates the need for other extrusion equipment to extrude the mounting joint into the profile cavity; only traction equipment is needed to pull the waterproof strip and the extrusion rope to achieve the installation of the waterproof component, reducing the need for extrusion tools and lowering the installation difficulty of the waterproof component.

Description

Technical Field

[0001] This utility model relates to the field of railway bridges, and in particular to a waterproof component for expansion joints of existing railway bridges and an expansion joint structure. Background Technology

[0002] Railway expansion joints are installed between the ends of two beams or between the beam end and the abutment. They can accommodate the expansion and contraction of the beam and have a waterproof sealing function, making them an important component of bridges.

[0003] Existing railway ballast beam expansion joints are typically composed of profiles, waterproof components, and anchor bars. Due to the presence of the steel cover plate on the top of the expansion joint, the operating space for installing and removing the waterproof components is limited. The mounting parts on both sides of the waterproof components are squeezed into the profile cavity by tools, making them difficult or even impossible to replace. Furthermore, the squeezing by tools can easily cause poor sealing and water leakage. Therefore, it is necessary to improve the waterproof components to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof component and expansion joint structure for existing railway bridge expansion joints to solve the problems existing in the prior art. It eliminates the need for other extrusion equipment to compress the mounting part and embed it into the profile cavity. The installation of the waterproof component can be achieved simply by pulling the waterproof belt and extrusion rope with traction equipment. This reduces the extrusion tooling, makes the operation simple, reliable and quick, and reduces the installation difficulty of the waterproof component.

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

[0006] A waterproof component for expansion joints of existing railway bridges includes a waterproof strip and an extrusion rope. The waterproof strip includes an expansion portion and a mounting portion. The expansion portion is wavy. The mounting portion is used to embed into a profile cavity, and the outer wall contour of the mounting portion is adapted to the contour of the profile cavity. The mounting portion is made of a flexible material and is connected to the end of the expansion portion. An expansion hole is provided on the mounting portion, and the radial direction of the expansion hole is located in the same plane as the wave extension direction of the wavy shape. The mounting portion also has a notch communicating with the expansion hole. The extrusion rope is used to pass through the expansion hole, and the diameter of the extrusion rope is larger than the diameter of the expansion hole in its natural state.

[0007] As one embodiment, the notch is a tapered shape with its width gradually increasing from the inside to the outside along the radial direction of the expansion hole.

[0008] As one embodiment, a plurality of waterproof protrusions are provided circumferentially on the outer wall of the mounting part, and the waterproof protrusions are used to abut against the inner wall of the profile cavity.

[0009] As one embodiment, the radial cross-sectional shape of the waterproof boss is triangular or trapezoidal.

[0010] As one embodiment, the end corners of the waterproof boss have a rounded transition structure.

[0011] As one embodiment, the waterproof tape is made of rubber.

[0012] As one embodiment, the extrusion rope is a steel wire rope.

[0013] As one embodiment, the profile has an opening communicating with the profile cavity, and the orientation of the notch is opposite to the orientation of the opening.

[0014] This utility model also provides an existing railway bridge expansion joint structure, including a profile and an existing railway bridge expansion joint waterproof component as described above; the profile is provided with a profile cavity and an opening communicating with the profile cavity; the mounting part of the existing railway bridge expansion joint waterproof component is disposed in the profile cavity.

[0015] As one embodiment, it also includes anchor bars, with the profile fixedly connected to the end of the anchor bars.

[0016] This utility model has the following technical advantages over the prior art:

[0017] In this invention, the mounting part is similar in shape to the profile cavity, but slightly smaller in size, making it easier to insert the mounting part into the cavity and pull it. Furthermore, after inserting the extrusion rope into the expansion hole, the extrusion rope allows the mounting part to fit snugly against the profile cavity, achieving a waterproof seal. Moreover, the waterproof component in this invention does not require other extrusion equipment to press the mounting part into the profile cavity; installation is achieved simply by pulling the waterproof belt and extrusion rope with traction equipment. This reduces the need for extrusion tools, making the operation simple, reliable, and quick, and lowering the installation difficulty of the waterproof component. Additionally, the mounting part in this invention has a notch communicating with the expansion hole, facilitating the extrusion rope's entry and exit from the expansion hole and allowing the extrusion rope to expand the mounting part, achieving a compression sealing effect.

[0018] Other technical effects that this invention can achieve are described in the specific embodiments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of an existing railway bridge expansion joint waterproof component in one embodiment of the present invention.

[0021] Figure 2 for Figure 1 Schematic diagram of the middle mounting section;

[0022] Figure 3 for Figure 2 A partially enlarged structural diagram of region A in one of the methods (the cross-section of the waterproof boss is trapezoidal);

[0023] Figure 4 for Figure 2 Another method is shown in the enlarged structural diagram of region A (the cross-section of the waterproof boss is triangular);

[0024] Figure 5 This is a schematic diagram of an existing railway bridge expansion joint structure in one embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of an existing railway bridge expansion joint waterproof component in another embodiment of the present invention.

[0026] Figure 7 for Figure 6 Schematic diagram of the middle mounting section;

[0027] Figure 8 for Figure 7 A magnified schematic diagram of a portion of region B in one of the methods (the cross-section of the waterproof boss is trapezoidal);

[0028] Figure 9 for Figure 7 Another method is shown in the enlarged structural diagram of region B (the cross-section of the waterproof boss is triangular);

[0029] Figure 10 This is a schematic diagram of an existing railway bridge expansion joint structure in another embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Waterproof tape; 11. Expansion joint; 12. Mounting part; 121. Waterproof boss; 122. Expansion hole; 123. Notch; 2. Extrusion rope; 3. Profile; 4. Anchor bar. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] The purpose of this utility model is to provide a waterproof component and expansion joint structure for existing railway bridge expansion joints to solve the problems existing in the prior art. It eliminates the need for other extrusion equipment to compress the mounting part and embed it into the profile cavity. The installation of the waterproof component can be achieved simply by pulling the waterproof belt and extrusion rope with traction equipment. This reduces the extrusion tooling, makes the operation simple, reliable and quick, and reduces the installation difficulty of the waterproof component.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1:

[0036] like Figures 1-10 As shown, this embodiment provides a waterproof component for expansion joints of existing railway bridges, including a waterproof strip 1 and an extrusion rope 2. The waterproof strip 1 includes a telescopic part 11 and a mounting part 12; wherein, the telescopic part 11 is wavy and can extend and retract along the direction of the wave extension; the mounting part 12 is used to embed into the profile cavity, and the outer wall contour of the mounting part 12 is adapted to the contour of the profile cavity, and can have an arc contour and / or a planar contour (such as...). Figures 1-5 , Figures 6-10 These are two different structural forms of the mounting part 12. However, when selecting waterproof components, the size of the mounting part 12 should be slightly smaller than the size of the profile cavity to be used. The mounting part 12 is made of flexible material and is connected to the end of the telescopic part 11. The mounting part 12 is provided with an expansion hole 122, the radial direction of which is on the same plane as the wavy extension direction. The mounting part 12 is also provided with a notch 123 communicating with the expansion hole 122. The compression rope 2 has radial stiffness and is used to pass through the expansion hole 122. The diameter of the compression rope 2 is larger than the diameter of the expansion hole 122 in its natural state (when the compression rope 2 is not inserted). After the compression rope 2 passes through the expansion hole 122, it can compress the mounting part 12, causing the mounting part 12 to expand.

[0037] Replacing waterproof components involves the following steps:

[0038] The first step is to install traction equipment on the outer side of the beam end;

[0039] The second step is to use a traction device to pull all the original waterproof components out of the profile cavity (this step can be ignored if the original profile cavity did not have waterproof components before).

[0040] The third step is to clean the profile cavity; use a traction device to pull cotton yarn or a soft cloth to clean the debris inside the cavity;

[0041] Fourth step, insert the mounting part 12 into the profile cavity, and use the traction device to pull the waterproof tape 1 from one end of the profile cavity to the other end;

[0042] Fifth step, insert the extrusion rope 2 into the expansion hole 122. The extrusion rope 2 causes the clamping part 12 to expand, and the outer wall of the clamping part abuts against the inner wall of the profile cavity, and the waterproof component is installed.

[0043] Step 6: Pour water into the upper part of the waterproof components to verify the waterproofing effect.

[0044] To facilitate pulling the mounting part 12 inside the profile cavity, a traction device can be used to pull cotton yarn or soft cloth to apply lubricant or lubricant inside the profile cavity, making the inner wall of the profile cavity smoother and reducing the friction between the inner wall of the profile cavity and the mounting part 12, thereby reducing the difficulty of pulling the waterproof tape 1; to facilitate pulling the extrusion rope 2 inside the expansion hole 122, lubricant or lubricant can be applied to the surface of the extrusion rope 2, making the outer wall of the extrusion rope 2 smoother and reducing the friction between the extrusion rope 2 and the expansion hole 122, thereby reducing the difficulty of pulling the extrusion rope 2.

[0045] As can be seen from the above, in this embodiment, the mounting part 12 is similar in shape to the profile cavity, but its external size is slightly smaller, which makes it easier to put the mounting part 12 into the cavity and pull it. Moreover, after the extrusion rope 2 is inserted into the expansion hole 122, the extrusion rope 2 can make the mounting part 12 fit with the profile cavity to achieve a sealing and waterproof effect. Furthermore, in this embodiment, the waterproof component does not need to use other extrusion equipment to extrude the mounting part 12 to embed it into the profile cavity. Only the traction equipment is needed to pull the waterproof belt 1 and the extrusion rope 2 to achieve the installation of the waterproof component, reducing the extrusion tooling, making the operation simple, reliable, and quick, and reducing the installation difficulty of the waterproof component. In addition, in this embodiment, the mounting part 12 is provided with a notch 123 that communicates with the expansion hole 122, which facilitates the extrusion rope 2 to enter and exit the expansion hole 122, and also helps the extrusion rope 2 to expand the mounting part 12 to achieve the extrusion sealing effect.

[0046] In this embodiment, along the radial direction of the expansion hole 122, the notch 123 is a tapered shape with the width gradually increasing from the inside to the outside.

[0047] In this embodiment, multiple waterproof protrusions 121 are provided circumferentially on the outer wall of the mounting part 12. The waterproof protrusions 121 are used to abut against the inner wall of the profile cavity. Specifically, in this embodiment, the radial cross-sectional shape of the waterproof protrusions 121 is triangular or trapezoidal. In this embodiment, the end corners of the waterproof protrusions 121 have rounded transition structures. Thus, in this embodiment, multiple waterproof protrusions 121 are provided on the outer surface of the mounting part 12. The waterproof protrusions 121 are trapezoidal or triangular, and the sharp corners are small arcs, so that the mounting part 12 and the cavity are in line contact or small-area surface contact, thereby reducing the contact area, reducing the resistance during pulling, and reducing the difficulty of pulling.

[0048] In this embodiment, the waterproof strip 1 is made of rubber, that is, the telescopic part 11, the mounting part 12 and the waterproof protrusion 121 are all made of rubber. Not only is the material simple to obtain, but the whole has good deformation ability and can achieve excellent waterproof function.

[0049] In this embodiment, the extrusion rope 2 is a steel wire rope, which can be bent and has excellent radial stiffness.

[0050] In this embodiment, the profile 3 has an opening that communicates with the profile cavity. The orientation of the notch 123 is opposite to the orientation of the opening. On the one hand, this can prevent one side of the notch 123 from being exposed in the profile cavity, which would affect the installation firmness of the mounting part 12 in the profile cavity. On the other hand, it can prevent water from entering the notch 123 and the expansion hole 122, which would cause corrosion to the wire rope.

[0051] Example 2:

[0052] like Figure 5 , Figure 10 As shown, this embodiment provides an existing railway bridge expansion joint structure, including a profile 3 and the existing railway bridge expansion joint waterproof component in Embodiment 1; the profile 3 is provided with a profile cavity and an opening communicating with the profile cavity; the mounting part 12 in the existing railway bridge expansion joint waterproof component is provided in the profile cavity.

[0053] This embodiment also includes anchor bars 4, which are anchored in the concrete structure of the railway bridge, and the profile 3 is fixedly connected to the end of the anchor bars 4.

[0054] The methods of fixing anchor bars 4 and profiles 3 in railway bridges are well known to those skilled in the art, and will not be described in detail in this embodiment.

[0055] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0056] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A waterproof component for expansion joints of existing railway bridges, characterized in that, Includes waterproof tape and squeeze rope; The waterproof tape includes: The telescopic part is wavy in shape. The mounting part is used to be embedded in the cavity of the profile, and the outer wall contour of the mounting part is adapted to the contour of the cavity of the profile; the mounting part is made of flexible material and is connected to the end of the telescopic part; the mounting part is provided with an expansion hole, the radial direction of the expansion hole is located in the same plane as the wave extension direction of the wave shape; the mounting part is also provided with a notch communicating with the expansion hole; The compression rope is used to pass through the expansion hole, and the diameter of the compression rope is larger than the diameter of the expansion hole in its natural state.

2. The waterproof component for expansion joints of existing railway bridges according to claim 1, characterized in that, Along the radial direction of the expansion hole, the notch is a tapered shape whose width gradually increases from the inside to the outside.

3. The waterproof component for expansion joints of existing railway bridges according to claim 1, characterized in that, Multiple waterproof protrusions are provided circumferentially on the outer wall of the mounting part, and the waterproof protrusions are used to abut against the inner wall of the profile cavity.

4. The waterproof component for expansion joints of existing railway bridges according to claim 3, characterized in that, The radial cross-sectional shape of the waterproof boss is triangular or trapezoidal.

5. The waterproof component for expansion joints of existing railway bridges according to claim 4, characterized in that, The waterproof boss has a rounded corner transition structure at its end edges.

6. The waterproof component for expansion joints of existing railway bridges according to claim 1, characterized in that, The waterproof tape is made of rubber.

7. The waterproof component for expansion joints of existing railway bridges according to claim 1, characterized in that, The extrusion rope is a steel wire rope.

8. The waterproof component for expansion joints of existing railway bridges according to claim 1, characterized in that, The profile has an opening that communicates with the profile cavity, and the orientation of the notch is opposite to the orientation of the opening.

9. An expansion joint structure for existing railway bridges, characterized in that, include: A profile, wherein the profile is provided with a profile cavity and an opening communicating with the profile cavity; The waterproof component for expansion joints of existing railway bridges as described in any one of claims 1 to 8, wherein the mounting portion of the waterproof component for expansion joints of existing railway bridges is disposed within the cavity of the profile.

10. The expansion joint structure of existing railway bridges according to claim 9, characterized in that, It also includes anchor bars, and the profile is fixedly connected to the end of the anchor bars.

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