Railway bridge beam end waterproof device convenient to construct and maintain

Abstract

The utility model relates to the technical field of beam end waterproof devices, aims to solve the problem that a railway bridge waterproof device in the prior art is difficult to install and replace, and provides a railway bridge beam end waterproof device convenient to construct and maintain, which comprises section bars and a sealing strip, the section bars comprise a first section bar and a second section bar, and the sealing strip is connected between the first section bar and the second section bar. Guide grooves are formed in the first sectional material and the second sectional material, movable cores are arranged in the guide grooves, and the upper portions of the movable cores are connected with the sectional materials through vertical adjusting connecting pieces; an opening is formed in one side of each guide groove, and the openings of the guide grooves in the first section bar and the second section bar are oppositely arranged; adhesive tape limiting bosses are arranged on one sides of the upper parts of the first profile and the second profile, and are positioned on the upper sides of the openings of the guide grooves; a rubber strip limiting groove is formed in the lower portion of the movable core, the end of the sealing strip is installed in the rubber strip limiting groove, and the sealing strip is tightly matched with the rubber strip limiting boss and the movable core. The sealing strip can be conveniently installed and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of beam end waterproof devices, and particularly relates to a railway bridge beam end waterproof device which is convenient for construction and maintenance. Background Technique

[0002] The expansion device of railway bridges is an important accessory of bridges, which is usually arranged between adjacent beam ends or at the expansion joint between the beam body and the breast wall of the abutment, and plays the roles of adapting to the creep and shrinkage of the beam body, preventing slag from falling, and waterproofing. Specifically, the expansion device of railway bridges needs to meet the free expansion and contraction of the bridge in two directions, namely the longitudinal direction and the transverse direction of the bridge. At the same time, it is necessary to prevent rainwater from penetrating into the expansion device, prevent ballast or garbage from entering the expansion joint or falling from the beam through the expansion joint, which may affect the pedestrians or vehicles below. In addition, it is necessary to avoid rainwater and sewage from flowing into the beam end and the end sealing of the prestressed anchor head at the beam end, resulting in the corrosion of the prestressed anchor, which affects the service life of the beam body.

[0003] The commonly used waterproof device for railway bridges at present is composed of anchoring profiles arranged on both sides of the expansion joint and a rubber water stop belt connected between the two. The anchoring profiles at both ends respectively fix and seal the two ends of the rubber water stop belt through the internal cavities. Since the ends of the rubber water stop belt are tightly clamped in the cavities of the profiles, and the space at the installation position of the expansion device is relatively narrow, it takes a long time to replace the rubber water stop belt, the construction process is cumbersome, time-consuming and laborious, and a large amount of manpower and material resources are required during the construction process, which greatly increases the maintenance cost. Content of the Utility Model

[0004] The utility model aims to provide a railway bridge beam end waterproof device which is convenient for construction and maintenance, so as to solve the problems of difficult installation and replacement of the existing railway bridge waterproof device.

[0005] The utility model is realized by adopting the following technical scheme:

[0006] The utility model provides a railway bridge beam end waterproof device which is convenient for construction and maintenance, including profiles and a sealing strip. The profiles include a first profile and a second profile. The first profile and the second profile are respectively connected to the ends of two adjacent beam bodies. The sealing strip is connected between the first profile and the second profile. Guide grooves are arranged in the first profile and the second profile. A movable core is arranged in the guide grooves. The upper part of the movable core is connected to the profiles through a vertical adjusting connecting piece. The vertical adjusting connecting piece can adjust the movable core to move up and down in the guide grooves;

[0007] An opening is arranged on one side of the guide groove. The openings of the guide grooves on the first profile and the second profile are arranged opposite to each other; on one side of the upper parts of the first profile and the second profile, there are rubber strip limiting bosses, and the rubber strip limiting bosses are located above the openings of the guide grooves;

[0008] A rubber strip limiting groove is provided at the lower part of the movable core, and the end of the sealing strip is installed in the rubber strip limiting groove, and the sealing strip is in close fit with the rubber strip limiting boss and the movable core.

[0009] As a preferred technical solution:

[0010] Bolting holes are provided at the upper parts of the first profile and the second profile, a connecting hole is provided at the upper part of the movable core, and one end of the vertical adjusting connecting member passes through the bolting hole and is connected to the movable core.

[0011] As a preferred technical solution:

[0012] The connecting hole is a threaded hole, the vertical adjusting connecting member is a tension bolt, the rod part of the tension bolt is inserted into the bolting hole and screwed into the threaded hole, the tension bolt is connected to the movable core by threads, and the head of the tension bolt is limited outside the bolting hole.

[0013] As a preferred technical solution:

[0014] Multiple bolting holes are provided at the upper parts of the first profile and the second profile, the multiple bolting holes are arranged at intervals and evenly, and multiple corresponding threaded holes are provided on the movable core.

[0015] As a preferred technical solution:

[0016] A limiting boss is provided on the lower side of the end of the sealing strip, and the limiting boss is limited in the rubber strip limiting groove.

[0017] As a preferred technical solution:

[0018] A limiting groove is provided on the upper side of the end of the sealing strip. When the movable core moves upward until the sealing strip contacts the rubber strip limiting boss, the rubber strip limiting boss just inserts into the limiting groove.

[0019] As a preferred technical solution:

[0020] Movable core limiting bosses are provided at the lower parts of the first profile and the second profile, the movable core limiting bosses are located on the lower side of the opening of the guiding groove, and the movable core limiting bosses are used to limit the position of the movable core.

[0021] As a preferred technical solution:

[0022] The sealing strip is a noise-reducing sealing strip, and a cavity structure is provided on the noise-reducing sealing strip.

[0023] As a preferred technical solution:

[0024] A plurality of cavity structures are provided on the noise reduction sealing strip.

[0025] As a preferred technical solution:

[0026] The cavity structures adopt shapes including but not limited to parallelograms, triangles, circles, strips, etc.

[0027] As a preferred technical solution:

[0028] The first profile and the second profile are respectively fixedly connected to the corresponding beam body through a plurality of anchoring components.

[0029] As a preferred technical solution:

[0030] The anchoring component includes an anchor bolt, a locking nut and a trapezoidal nut. A dovetail groove is provided on one side of the first profile and the second profile. The trapezoidal nut is installed in the dovetail groove. The dovetail groove is adapted to the trapezoidal nut. One end of the anchor bolt is connected to the trapezoidal nut by a thread. A locking nut is also connected to the anchor bolt. One end of the locking nut abuts against the side of the profile where the dovetail groove is provided.

[0031] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0032] 1. By adjusting the tensioning bolt of the present utility model, the movable core moves up and down in the guide groove, thereby changing the size of the space enclosed by the movable core and the rubber strip limit boss. Moving the movable core downward makes the space larger, facilitating the insertion of the end of the noise reduction sealing strip into the rubber strip limit groove. Then, moving the movable core upward makes the space smaller, causing the rubber strip limit boss to contact the noise reduction sealing strip and inserting the rubber strip limit boss into the limit groove on the noise reduction sealing strip. The tensioning bolt can provide sufficient tensioning force. Tightening the tensioning bolt makes the noise reduction sealing strip fit tightly with the profile and the movable core, achieving sealing and having a good waterproof effect. In this way, the installation and replacement of the noise reduction sealing strip are very convenient, the operation method is simple, the difficulty of replacing and maintaining the noise reduction sealing strip is reduced, the time for installation and replacement is reduced, and the construction efficiency is improved.

[0033] 2. The noise reduction sealing strip of the present utility model is provided with cavity structures, which can reduce noise. Description of the Drawings

[0034] Figure 1 It is a top view of the installation of the waterproof device at the beam end of a railway bridge that is convenient for construction and maintenance described in the present utility model.

[0035] Figure 2The front view of the installation of the waterproof device at the end of a railway bridge for easy construction and maintenance described in the present utility model.

[0036] Figure 3 The structural schematic diagram of the profile described in the present utility model.

[0037] Figure 4 The structural schematic diagram of the movable core described in the present utility model.

[0038] Figure 5 The structural schematic diagram of the noise reduction sealing strip described in the present utility model.

[0039] Icon: 1 - Profile, 2 - Movable core, 3 - Noise reduction sealing strip, 4 - Anchor bolt, 5 - Trapezoidal nut, 6 - Locking nut, 7 - Tension bolt, 8 - Beam body, 11 - Guide groove, 12 - Movable core limiting boss, 13 - Sealing strip limiting boss, 14 - Dovetail groove, 15 - Bolt hole, 21 - Sealing strip limiting groove, 22 - Threaded hole, 31 - Limiting boss, 32 - Limiting groove, 33 - Cavity structure. Specific implementation mode

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0041] Embodiment 1

[0042] As Figure 1 - Figure 2 shown, this embodiment provides a waterproof device at the end of a railway bridge for easy construction and maintenance. The waterproof device at the end of the railway bridge is installed between two adjacent beam bodies 8. The waterproof device at the end of the railway bridge includes a profile 1 and a sealing strip. The profile 1 includes a first profile and a second profile. The first profile and the second profile are respectively connected to the ends of two adjacent beam bodies 8, and the sealing strip is connected between the first profile and the second profile.

[0043] In this embodiment, the first profile and the second profile have the same structure, and the two are fixedly connected to the corresponding beam body 8.

[0044] The first profile and the second profile are respectively fixedly connected to the corresponding beam body 8 through a plurality of anchoring components, and the plurality of anchoring components are evenly and spaced. The profile 1 is fixedly connected to the beam body 8 through the anchoring components.

[0045] In this embodiment, the anchoring assembly includes an anchor bolt 4, a lock nut 6 and a trapezoidal nut 5. A dovetail groove 14 is formed on one side of the first profile and the second profile. The trapezoidal nut 5 is installed in the dovetail groove 14, and the dovetail groove 14 is adapted to the trapezoidal nut 5. One end of the anchor bolt 4 is connected to the trapezoidal nut 5 by threads, and the lock nut 6 is also connected to the anchor bolt 4. One end of the lock nut 6 abuts against the side of the profile 1 where the dovetail groove 14 is formed. The lock nut 6 and the anchor bolt 4 are cast in the concrete of the beam body 8, and the first profile and the second profile are anchored at the beam end of the beam body 8 by the trapezoidal nut 5, the lock nut 6 and the anchor bolt 4.

[0046] By adopting the above anchoring assembly, the profile 1 can be stably connected to the beam body 8. The design of the dovetail groove 14 can prevent the trapezoidal nut 5 from coming out, improving the reliability of the connection between the profile 1 and the beam body 8.

[0047] However, it is not limited to adopting the above anchoring assembly. It is also possible to stably connect the profile 1 to the beam body 8 by other means.

[0048] In this embodiment, the sealing strip is made of materials including but not limited to natural rubber, chloroprene rubber, ethylene propylene diene monomer rubber, styrene butadiene rubber, cis-1,4-polybutadiene rubber, silicone rubber, thermoplastic vulcanizate, polyurethane, etc. The sealing strip adopts a noise reduction sealing strip 3, and a plurality of cavity structures 33 are arranged on the noise reduction sealing strip 3, which can achieve noise reduction. The cavity structures 33 adopt shapes including but not limited to parallelograms, triangles, circles, strips, etc.

[0049] As Figure 2 and Figure 3 shown, guide grooves 11 are arranged in the first profile and the second profile. The axial direction of the guide grooves 11 is vertical, and a movable core 2 is arranged in the guide grooves 11. The movable core 2 can move up and down along the axial direction of the guide grooves 11 in the guide grooves 11.

[0050] The upper part of the movable core 2 is connected to the profile 1 through a vertical adjustment connecting piece, and the vertical adjustment connecting piece can adjust the movable core 2 to move up and down in the guide grooves 11.

[0051] In this embodiment, as Figure 2 - Figure 4As shown, bolt holes 15 are provided in the upper parts of the first profile and the second profile. The bolt holes 15 communicate with the guide grooves 11. Threaded holes 22 are provided in the upper part of the movable core 2. The positions of the bolt holes 15 and the threaded holes 22 correspond to each other. The vertical adjustment connecting member uses a tension bolt 7. The rod portion of the tension bolt 7 is inserted into the bolt hole 15 and screwed into the threaded hole 22, so that the tension bolt 7 is connected to the movable core 2. The head of the tension bolt 7 is limited outside the bolt hole 15. By tightening or loosening the tension bolt 7, the movable core 2 can be moved up and down in the guide groove 11.

[0052] In this embodiment, a plurality of the bolt holes 15 are provided in the upper parts of the first profile and the second profile. The plurality of bolt holes 15 are arranged at intervals and evenly. A plurality of the threaded holes 22 are correspondingly provided on the movable core 2.

[0053] However, the up and down movement of the movable core 2 is not limited to the above method. Other structures or components that can drive the up and down movement of the movable core 2 are also possible, such as an adjustment pull rod. Connect the adjustment pull rod to the movable core 2, and then adjust the up and down movement of the adjustment pull rod.

[0054] An opening is provided on one side of the guide groove 11. The opening of the guide groove 11 is located on the other side of the first profile and the second profile (wherein, the "other side" is used to distinguish and compare with the "one side" in the previous "one side of the first profile and the second profile is provided with a dovetail groove 14"). The openings of the guide grooves 11 on the first profile and the second profile are arranged opposite to each other.

[0055] As Figure 3 shown, movable core limit bosses 12 are provided at the lower parts of the first profile and the second profile. The movable core limit bosses 12 are located below the openings of the guide grooves 11. The movable core limit bosses 12 are used to limit the position of the movable core 2. The limit position of the movable core 2 when moving downwards in the guide groove 11 is that the bottom of the movable core 2 contacts the movable core limit bosses 12.

[0056] As Figure 4 and Figure 5 shown, a rubber strip limit groove 21 is provided at the lower part of the movable core 2. A limit boss 31 is provided on the lower side of the end of the noise reduction sealing rubber strip 3. The end of the noise reduction sealing rubber strip 3 is installed in the rubber strip limit groove 21. At the same time, the limit boss 31 on the noise reduction sealing rubber strip 3 is limited in the rubber strip limit groove 21.

[0057] As Figure 5As shown, a limiting groove 32 is provided on the upper side of the end of the noise reduction sealing strip 3. A strip limiting boss 13 is provided on one side of the upper part of the first profile and the second profile. The strip limiting boss 13 is located on the upper side of the opening of the guiding groove 11. When the movable core 2 moves upward until the noise reduction sealing strip 3 contacts the strip limiting boss 13, the strip limiting boss 13 just inserts into the limiting groove 32 on the noise reduction sealing strip 3, so as to limit the end of the noise reduction sealing strip 3 in the strip limiting groove 21, stably connect the end of the noise reduction sealing strip 3 with the profile 1, and realize the limiting installation of the noise reduction sealing strip 3. Tighten the tensioning bolt 7 to move the movable core 2 upward. The end of the noise reduction sealing strip 3 just fits into the space surrounded by the movable core 2 and the strip limiting boss 13. The tensioning bolt 7 provides a tensioning force to ensure that the noise reduction sealing strip 3 is in close contact with the profile 1 and the movable core 2, ensuring a good waterproof effect.

[0058] In this embodiment, the first profile and the second profile adopt C profiles, but are not limited to C profiles, and other profiles with the foregoing characteristics can also be used.

[0059] In this embodiment, the C profiles and the movable core 2 are made of materials including but not limited to carbon steel, stainless steel, aluminum alloy, etc.

[0060] With the above structure, adjust the tensioning bolt 7 to move the movable core 2 up and down in the guiding groove 11, so as to change the size of the space surrounded by the movable core 2 and the strip limiting boss 13. Move the movable core 2 downward to make this space larger, which is convenient for placing the end of the noise reduction sealing strip 3 into the strip limiting groove 21, and then move the movable core 2 upward to make this space smaller, so that the strip limiting boss 13 contacts the noise reduction sealing strip 3, and the strip limiting boss 13 inserts into the limiting groove 32 on the noise reduction sealing strip 3. The tensioning bolt 7 can provide sufficient tensioning force. Tighten the tensioning bolt 7 to make the noise reduction sealing strip 3 in close contact with the profile 1 and the movable core 2 to achieve sealing, with a good waterproof effect. In this way, the installation and replacement of the noise reduction sealing strip 3 are very convenient, the operation method is simple, the difficulty of replacing and maintaining the noise reduction sealing strip 3 is reduced, the time for installation and replacement is reduced, and the construction efficiency is improved.

[0061] The replacement of the noise reduction sealing strip 3 specifically includes the following steps:

[0062] S1: Loosen the tensioning bolt 7 to move the movable core 2 downward until it contacts the movable core limiting boss 12;

[0063] S2: Then take out the old noise reduction sealing strip 3 between the beam joints;

[0064] S3: Install the new noise reduction sealing strip 3. Install the two ends of the new noise reduction sealing strip 3 into the strip limiting grooves 21 of the movable cores 2 on both sides respectively, and then tighten the tensioning bolts 7 to move the movable cores 2 upward, so that the new noise reduction sealing strip 3 fits tightly with the movable cores 2 and the strip limiting bosses 13, completing the replacement of the strip.

[0065] In addition, when installing the waterproof device at the end of the railway bridge beam, first insert the movable core 2 through the end face of the C-shaped profile, and then install the trapezoidal nut 5, the anchor bolt 4 and the locking nut 6 on one side of the C-shaped profile to fixedly connect the C-shaped profile with the anchoring assembly, and then pour the concrete of the beam body 8 to anchor the waterproof device at the end of the railway bridge beam at the end of the bridge.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A waterproof device for the end of a railway bridge that is convenient for construction and maintenance, comprising profiles and a sealing strip. The profiles include a first profile and a second profile. The first profile and the second profile are respectively connected to the ends of two adjacent beam bodies. The sealing strip is connected between the first profile and the second profile. The characteristics are as follows: Guide grooves are provided in the first profile and the second profile. A movable core is provided in the guide grooves. The upper part of the movable core is connected to the profile through a vertical adjustment connecting piece. The vertical adjustment connecting piece can adjust the movable core to move up and down in the guide grooves; An opening is provided on one side of the guide groove. The openings of the guide grooves on the first profile and the second profile are arranged opposite to each other; on one side of the upper parts of the first profile and the second profile, there are rubber strip limiting bosses, and the rubber strip limiting bosses are located above the openings of the guide grooves; A rubber strip limiting groove is provided at the lower part of the movable core. The end of the sealing strip is installed in the rubber strip limiting groove, and the sealing strip is in close fit with the rubber strip limiting boss and the movable core.

2. The waterproof device for the end of a railway bridge that is convenient for construction and maintenance according to claim 1, wherein: Bolting holes are provided in the upper parts of the first profile and the second profile. Connecting holes are provided in the upper part of the movable core. One end of the vertical adjustment connecting piece passes through the bolting hole and is connected to the movable core.

3. The waterproof device for the end of a railway bridge that is convenient for construction and maintenance according to claim 2, wherein: The connecting hole is a threaded hole. The vertical adjustment connecting piece adopts a tension bolt. The rod part of the tension bolt is inserted into the bolting hole and screwed into the threaded hole. The tension bolt is connected to the movable core through threads, and the head of the tension bolt is limited outside the bolting hole.

4. The waterproof device for the end of a railway bridge that is convenient for construction and maintenance according to claim 3, wherein: Multiple bolting holes are provided in the upper parts of the first profile and the second profile. The multiple bolting holes are arranged at intervals and evenly. Corresponding to the multiple bolting holes on the movable core, there are multiple threaded holes.

5. The waterproof device for the end of a railway bridge that is convenient for construction and maintenance according to claim 1, wherein: A limiting boss is provided on the lower side of the end of the sealing strip. The limiting boss is limited in the rubber strip limiting groove.

6. The waterproof device for the end of a railway bridge that is convenient for construction and maintenance according to claim 1 or 5, wherein: A limiting groove is provided on the upper side of the end of the sealing strip. When the movable core moves up until the sealing strip contacts the rubber strip limiting boss, the rubber strip limiting boss just inserts into the limiting groove.

7. The waterproof device for the end of a railway bridge that is convenient for construction and maintenance according to claim 1, wherein: Movable core limiting bosses are provided at the lower parts of the first profile and the second profile. The movable core limiting bosses are located below the openings of the guide grooves. The movable core limiting bosses are used to limit the position of the movable core.

8. The waterproof device for the beam end of a railway bridge facilitating construction and maintenance according to claim 1, wherein: The sealing strip is made of a noise-reducing sealing strip, and a cavity structure is arranged on the noise-reducing sealing strip.

9. The waterproof device for the beam end of a railway bridge facilitating construction and maintenance according to claim 1, wherein: The first profile and the second profile are respectively fixedly connected to the corresponding beam body through a plurality of anchoring components.

10. The waterproof device for the beam end of a railway bridge facilitating construction and maintenance according to claim 9, wherein: The anchoring component includes an anchor bolt, a lock nut and a trapezoidal nut. A dovetail groove is formed on one side of the first profile and the second profile. The trapezoidal nut is installed in the dovetail groove, and the dovetail groove is adapted to the trapezoidal nut. One end of the anchor bolt is connected to the trapezoidal nut by a thread, and the lock nut is also connected to the anchor bolt. One end of the lock nut abuts against the side of the profile where the dovetail groove is formed.

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