Comb tooth type bridge expansion device

Abstract

The invention relates to the technical field of bridge expansion devices, and provides a comb tooth type bridge expansion device which comprises a first comb tooth plate and a second comb tooth plate, a gap is formed between the first comb tooth plate and the second comb tooth plate, supporting frames are arranged at the bottom of the first comb tooth plate and / or the second comb tooth plate, and the multiple supporting frames are arranged in the length direction of the first comb tooth plate; the exhaust pipes are arranged in the supporting frame and communicate with the gap, and the multiple exhaust pipes communicate in sequence. The porous sound absorption piece is further arranged in the exhaust pipes and is configured to be connected with the exhaust pipes and absorb airflow noise in the exhaust pipes. By means of the technical scheme, the technical problems that in the related technology, in order to reduce noise, an exhaust pipeline is installed under a comb tooth type telescopic device, pipeline installation is inconvenient, steps are tedious, and the noise still needs to be improved are solved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of bridge expansion devices, and in particular, to a comb-tooth type bridge expansion device. Background Art

[0002] In order to meet the requirements of bridge deck deformation, the bridge expansion device is installed between the two ends of the bridge, which can adjust the mutual displacement and connection between the two caused by vehicle loads or thermal expansion and contraction of bridge construction materials.

[0003] At present, a commonly used telescopic device is a comb-tooth telescopic device, which can ensure that the vehicle passes more smoothly during use, but it will inevitably generate noise. Even though the comb-tooth telescopic device is relatively quiet, it still needs to be improved. There are two reasons for its generation. One is the direct impact of the wheel on the telescopic device, and the other is that a water stop and other devices are set inside the telescopic device to make the internal space relatively closed. The wheel instantly compresses the air in the gap and instantly reduces the pressure, which is easy to generate oscillating sound waves, that is, air burst.

[0004] To improve the noise problem, the second reason is easier to deal with. Simply put, an exhaust duct connected to the internal space can be arranged in the telescopic device to weaken the above-mentioned pressurization and instantaneous decompression process, and instead squeeze the airflow into the exhaust duct for discharge, thereby weakening the air explosion and reducing noise.

[0005] However, the above-mentioned exhaust duct still has the following problems during installation: since the comb-tooth telescopic device is relatively long, the installation of the one-piece exhaust duct is time-consuming and labor-intensive, and it is easy to damage the pipeline or the telescopic device; and the segmented exhaust duct is inconvenient to be fixedly connected with the irregularly shaped telescopic device, and it is also necessary to manually weld or anchor each section one by one and perform the connection operations of each section, which is relatively cumbersome. Summary of the invention

[0006] In order to overcome the above-mentioned defects, an embodiment of the present disclosure provides a comb-tooth type bridge expansion device, which solves the technical problems faced in the related art of installing an exhaust duct under a comb-tooth type expansion device to reduce noise, such as inconvenient pipe installation, cumbersome steps, and noise that still needs to be improved.

[0007] According to one aspect, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, including: a first comb-tooth plate and a second comb-tooth plate, wherein a gap is provided between the first comb-tooth plate and the second comb-tooth plate, and further comprising: A plurality of support frames, wherein the support frames are arranged at the bottom of the first comb plate and / or the second comb plate, and the plurality of support frames are arranged along the length direction of the first comb plate; A plurality of exhaust pipes, wherein the exhaust pipes are arranged in the support frame and communicated with the gap, and the plurality of exhaust pipes are communicated in sequence; A porous sound absorbing member is arranged in the exhaust pipe, and the porous sound absorbing member is connected to a plurality of the exhaust pipes to absorb the airflow noise in the exhaust pipes.

[0008] For example, in at least one embodiment of the present disclosure, a comb-tooth bridge expansion device is provided, wherein the number of the porous sound absorbing members is at most three, and the porous sound absorbing members are porous sound absorbing pipes, and the exhaust pipe is sleeved on the outer wall of the porous sound absorbing member.

[0009] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, wherein the support frame is U-shaped, and both ends of the support frame are fixedly connected to the first comb-tooth plate or the second comb-tooth plate, and further includes: An elastic extrusion member is arranged on the support frame and is located at one side of the exhaust pipe, and the elastic extrusion member abuts against the exhaust pipe.

[0010] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, wherein the elastic extrusion member has a mounting portion, and the elastic extrusion member is threadedly connected to the support frame through the mounting portion.

[0011] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, wherein the elastic extrusion member is a hollow elastic extrusion member, and the elastic extrusion member is an equilateral triangle.

[0012] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge telescopic device, wherein the end of the exhaust pipe has a limiting ring, the limiting rings of two adjacent exhaust pipes are respectively located on both sides of the support frame, and both ends of the elastic extrusion member have annular limiting grooves, and the limiting ring is located in the annular limiting groove.

[0013] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, wherein the first comb-tooth plate away from the gap and the second comb-tooth plate away from the gap both have sharp-angled stops, the sharp-angled stops are located above the support frame and form a gap with the support frame, and further include: A stopper seat, the stopper seat is arranged in the gap, the stopper seat has an acute-angle notch, the acute-angle notch is adapted to the shape of the acute-angle stopper, and is arranged to abut against the acute-angle stopper; A connecting piece, wherein the first comb tooth plate or the second comb tooth plate is connected to the stop seat via the connecting piece.

[0014] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, wherein the first comb-tooth plate and the second comb-tooth plate are both T-shaped, and both have connecting parts at the bottom, and the connecting parts and the support frame are configured to be connected to concrete.

[0015] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, further comprising: A water stop belt, wherein both ends of the water stop belt are detachably connected to the two connecting parts respectively, a space is formed between the water stop belt, the first comb plate and the second comb plate, the space has an opening 1, the gap, the space, the opening 1 and the exhaust pipe are connected in sequence, and the water stop belt is located below the opening 1; An arc-shaped support plate, wherein both ends of the arc-shaped support plate are detachably connected to the two connecting parts respectively, and is located between the water stop belt and the opening one. The arc-shaped support plate has an opening two and a through hole, wherein the opening two faces the water stop belt, and the through hole is configured to pass water.

[0016] For example, at least one embodiment of the present disclosure provides a comb-tooth bridge expansion device, wherein there are two arc-shaped support plates, the two arc-shaped support plates are arranged vertically at intervals, the through holes are strip-shaped through holes, and the two through holes are cross-arranged.

[0017] The beneficial effects of the embodiments of the present disclosure are: 1. Convenient installation: The design of several support frames arranged in a linear manner provides an installation basis for the exhaust pipe, that is, in practice, it uses a steel cage frame anchored by a comb plate, or a support frame directly formed in one piece. Compared with a whole exhaust pipe, this segmented setting does not require the installation of an extra-long pipe at one time during installation. Instead, a porous sound-absorbing component is clamped in two or more adjacent exhaust pipes to complete the stable support effect of the exhaust pipe from the inside to the outside with the support frame, quickly complete the initial positioning of the exhaust pipe, and greatly reduce the difficulty of installation.

[0018] 2. Reduce noise: When a vehicle passes through the telescopic device, the wheel compresses the air in the gap, and the air enters the exhaust pipe connected to the gap. Since the exhaust pipes are connected in sequence, the air flows in the pipe, rather than generating an air explosion phenomenon of instantaneous pressurization and decompression in the closed internal space of the telescopic device.

[0019] In addition, when the air flows in the exhaust pipe, the porous sound-absorbing member has a large number of tiny pores, and these pores are interconnected and communicate with the outside air. When the air flows through the porous sound-absorbing plate, the air will cause the air in the pores to vibrate. Due to the viscosity of the air, the air will generate friction with the pore walls when flowing in the pores, causing part of the sound energy to be converted into heat energy and dissipated, thereby achieving the purpose of sound absorption, thereby further improving the noise problem of the comb-tooth telescopic device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.

[0021] Figure 1 A cross-sectional view of a comb-tooth bridge expansion device in one embodiment of the present disclosure; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 It is a schematic diagram of the exhaust pipe structure in the present disclosure; Figure 4 This is a diagram showing the coordination of the exhaust pipe and the porous sound absorbing member in the present disclosure; Figure 5 for Figure 1 An exploded view of an embodiment; Figure 6 It is a schematic diagram of the internal structure of the first comb plate in the present disclosure; Figure 7 for Figure 5 Enlarged view of middle part B; Figure 8 for Figure 7 Enlarged view of the middle D part; Fig. 9 It is a schematic diagram of the structure of the elastic extrusion member in the present disclosure; Fig.10 for Figure 6 Enlarged view of middle C; Fig.11 It is a partial enlarged view of the first comb plate in the present disclosure; Fig.12 It is a schematic diagram of the arc-shaped support plate structure in the present disclosure.

[0022] In the figure: 1. first comb plate, 2. second comb plate, 3. gap, 4. support frame, 5. exhaust pipe, 501. limiting ring, 6. porous sound absorbing member, 7. elastic extrusion member, 701. mounting portion, 702. annular limiting groove, 8. acute-angle stopper, 9. gap, 10. stopper seat, 1001. acute-angle notch, 11. connecting member, 12. connecting portion, 13. water stop, 14. space, 1401. opening one, 15. arc-shaped support plate, 1501. opening two, 1502. through hole. DETAILED DESCRIPTION

[0023] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0024] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0025] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0026] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1~Figure 3As shown, it shows a comb-tooth type bridge expansion device in one embodiment of the present disclosure, including a first comb plate 1 and a second comb plate 2, with a gap 3 therebetween, a support frame 4 is arranged at the bottom of the first comb plate 1 and / or the second comb plate 2, and a plurality of support frames 4 are arranged along the length direction of the first comb plate 1; an exhaust pipe 5 is arranged in the support frame 4, connected to the gap 3, and a plurality of exhaust pipes 5 are connected in sequence; a porous sound absorbing member 6 is arranged in the exhaust pipe 5, and the porous sound absorbing member 6 is connected to a plurality of exhaust pipes 5, and is used to absorb the airflow noise in the exhaust pipe 5.

[0030] During the assembly process, first, at the bottom of the first comb plate 1 and / or the second comb plate 2, according to the pre-designed position, along the length direction of the first comb plate 1, that is, the horizontal length direction, a plurality of support frames 4 are fixed in sequence by welding or bolting, or the comb plate and the support frame 4 are prefabricated in an integrated manner to provide stable support for the subsequent installation of the exhaust pipe 5, which is usually a high-strength steel rectangular frame that can adapt to the complex use environment of the bridge; then the exhaust pipes 5 are installed one by one. Since the exhaust pipes 5 need to be connected in sequence, each exhaust pipe 5 is first placed one by one in the corresponding On one side of the support frame 4, a long strip of porous sound-absorbing member 6 adapted to the shape of the inner wall of the exhaust pipe 5 is passed through the support frame 4, such as a wavy shape, a honeycomb shape, etc., and then the ends of the porous sound-absorbing member 6 are inserted front and back into the exhaust pipe 5 to complete the sequential connection of several exhaust pipes 5. Alternatively, a tubular sound-absorbing panel with a length of two to three times that of the exhaust pipe 5 is used. During the process of gradually passing through several groups of support frames 4, a corresponding number of exhaust pipes 5 are put on to achieve the effect of internal support. At the same time, the connecting port of the side wall of the exhaust pipe 5 is just inserted into the space 14 of the telescopic device, smoothly connected with the gap 3, and the assembly is completed, which is convenient for exhaust.

[0031] During the installation process, the adjacent exhaust pipes 5 can be tightly connected by a socket connection or a flange connection. The connection is sealed with a sealing material to prevent air leakage. At the same time, the exhaust pipe 5 is connected to the gap 3 to ensure that the air in the gap 3 can smoothly enter the exhaust pipe 5.

[0032] As for the exhaust pipe 5, a round or square pipe is usually used. The round pipe has less resistance to airflow, while the square pipe is easier to install in coordination with the support frame 4 and the telescopic device. As for the material of the porous sound-absorbing component 6, porous ceramics or a combination thereof with sound-absorbing cotton, foam metal, etc. can be selected to ensure noise reduction effect while controlling costs.

[0033] Compared with the traditional method of directly placing a comb plate at the end of the bridge, welding and fixing the steel cage, inserting and fixing the exhaust pipe 5 as a whole, and further welding and fixing it at various positions, and finally pouring, the present invention no longer needs to weld the steel cage at various positions, weld and fix the exhaust pipe 5 as a whole, and then pour. Instead, it uses a prefabricated or quickly disassembled, welded support frame 4, arranges the positions of each exhaust pipe 5, and then quickly assembles the exhaust pipe 5 manually, and finally pours it. Specifically, compared with the large exhaust pipe 5 formed in one piece, the exhaust pipe 5 of each segmented component is smaller in weight and size, which is convenient for transportation and installation. At the construction site, each component can be installed one by one through simple tools and operations, which reduces the installation difficulty and construction risk, and the connection method is simple and reliable.

[0034] Moreover, during the use of the telescopic device disclosed in the present invention, the airflow not only weakens the air explosion phenomenon of instantaneous pressurization and decompression in the closed internal space 14 of the telescopic device, but also causes the vibration of the air in the pores during the flow of the airflow in the exhaust pipe 5, so that part of the sound energy is converted into heat energy and dissipated, thereby further achieving noise reduction. At the same time, the holes of the porous sound-absorbing member 6 will not block the gas from flowing into the exhaust pipe 5, and the connection of the exhaust pipes 5 is completed. Moreover, its annular structure can ensure that the airflow flows smoothly between the exhaust pipes 5, and will not affect the noise reduction function and gas flow.

[0035] like Figure 3 , Figure 4 As shown, in some examples, there are at most three porous sound absorbing members 6 , and the porous sound absorbing members 6 are porous sound absorbing tubes, and the exhaust pipe 5 is sleeved on the outer wall of the porous sound absorbing member 6 .

[0036] There are at most three porous sound-absorbing parts, which is a significant reduction in number compared to multiple small sound-absorbing components. During installation, there is no need to place and fix many small components one by one, which greatly shortens the installation time and reduces the risk of loosening due to too many connection points between components. The above-mentioned tubular form is adopted to sleeve the exhaust pipe 5 on the outer wall of the porous sound-absorbing part 6. This nested installation method is simple and direct. The installer only needs to put the pre-made porous sound-absorbing tube with the exhaust pipe 5 into the support frame 4 as a whole, reducing the complex positioning during the installation process.

[0037] In addition, the tubular porous structure can capture and absorb the airflow noise in the pipe in all directions. When the air flows through, the sound waves are continuously reflected and refracted in the porous structure, and the sound energy is fully converted into other forms of energy such as heat energy, thereby effectively reducing the noise. Moreover, since the exhaust pipe 5 is tightly mounted on the outer wall of the porous sound-absorbing pipe, the airflow can flow more concentratedly within the effective range of the porous sound-absorbing pipe, so that the sound absorption effect can be fully exerted and finally discharged. Compared with other forms of sound-absorbing component layouts, it can more efficiently reduce noise propagation.

[0038] like Figure 1~Figure 2As shown, in some examples, the support frame 4 is U-shaped, and both ends of the support frame 4 are fixedly connected to the first comb plate 1 or the second comb plate 2, and also include: an elastic extrusion member 7 is arranged on the support frame 4, located on one side of the exhaust pipe 5, and the elastic extrusion member 7 abuts the exhaust pipe 5.

[0039] The support frame 4 is designed to be U-shaped, and its two ends are fixedly connected to the first comb plate 1 or the second comb plate 2. Compared with other shapes, it can better wrap and support the exhaust pipe 5 to form a stable bearing structure. In addition, the exhaust pipe 5 is deformed and extruded by the elastic extrusion member 7 in the support frame 4 to ensure that the exhaust pipe 5 will not be displaced therein. Although the surrounding is in contact with concrete, the determination of this preliminary positioning form can also facilitate secondary adjustments before pouring to adapt to changes in exhaust pipes 5 of different shapes and specifications to achieve a tight fit, or the overall displacement of the telescopic device will not be affected, thereby further improving the practicability of the telescopic device during the layout process.

[0040] The elastic extrusion member 7 can maintain its contact state with the exhaust pipe 5 through its own elastic deformation, ensuring that the exhaust pipe 5 is always in the correct position. It can adapt to various types of exhaust pipes 5 and maintain the normal performance of the exhaust and noise reduction functions.

[0041] Specifically, the elastic extrusion member 7 can be in the form of a rubber block or an elastic silicone strip, etc., which can control the cost while ensuring the function. In addition, it can also play a certain buffering role when the telescopic device is extended or retracted by external force.

[0042] like Figure 5~Figure 8 As shown, in some examples, the elastic extrusion member 7 has a mounting portion 701 , and the elastic extrusion member 7 is threadedly connected to the support frame 4 via the mounting portion 701 .

[0043] The elastic extrusion member 7 is threadedly connected to the support frame 4 through the mounting portion 701. In the early stage, the construction personnel only need to use simple tools, such as a wrench, to easily install the elastic extrusion member 7 on the support frame 4 and press it tightly against the exhaust pipe 5. Compared with welding, riveting and other connection methods, it greatly improves the installation efficiency and reduces the construction time and labor costs. In addition, the threaded connection can achieve fine-tuning to ensure the best fixing and buffering effect on the exhaust pipe 5.

[0044] like Figure 7~Figure 9 As shown, in some examples, the elastic extrusion member 7 is a hollow elastic extrusion member, and the elastic extrusion member 7 is a regular triangle.

[0045] The hollow and equilateral triangle design makes it have better elastic deformation ability, and can better adapt to exhaust pipes 5 of various shapes and specifications to deform accordingly, and saves certain costs compared to solid ones, and is convenient for production; in addition, the equilateral triangle is a stable geometric shape with good compression and deformation resistance. The side of the equilateral triangle close to the exhaust pipe 5 is the extrusion side, which can effectively cover most parts of the extruded exhaust pipe 5 and simplify the structure.

[0046] Compared with isosceles triangles, irregular triangles and other shapes, the equilateral triangle achieves a balance between lightness and functionality, is easier to fill the entire support frame 4, and fits tightly with the exhaust pipe 5, without the need to adjust the parameters of the support frame 4 or the exhaust pipe 5.

[0047] like Fig. 9 As shown, in some examples, a limiting ring 501 is provided at the end of the exhaust pipe 5, and the limiting rings 501 of two adjacent exhaust pipes 5 are respectively located on both sides of the support frame 4, and an annular limiting groove 702 is provided at both ends of the elastic extrusion member 7, and the limiting ring 501 is located in the annular limiting groove 702.

[0048] In order to further improve the fixing effect of the elastic extrusion part 7 on the exhaust pipe 5, it is upgraded to a combination of tight abutment and clamping. Specifically, a limiting ring 501 is integrally formed at the end of the exhaust pipe 5, and a corresponding annular limiting groove of a matching shape is opened on the elastic extrusion part 7. When the extruded edge is tightly against the outer wall of the exhaust pipe 5, the limiting ring 501 is clamped in the annular limiting groove 702. The annular design is mainly to be able to clamp at any angle, and its cross-section can be rectangular or triangular.

[0049] In addition, through the design of two groups of annular limiting grooves 702, two adjacent exhaust pipes 5 can be fully fixed inside and outside through the internal porous sound absorbing component 6 and the external support frame 4 and elastic extrusion component 7, thereby completing the connection of several groups of exhaust pipes 5 at one time.

[0050] like Figure 5~Figure 7 , Fig.10 As shown, in some examples, the first comb tooth plate 1 and the second comb tooth plate 2 have an acute-angle stop 8 on the side away from the gap 3, and the acute-angle stop 8 is located above the support frame 4 and forms a gap 9 with the support frame 4, and also includes: a stop seat 10 is arranged in the gap 9, and the stop seat 10 has an acute-angle notch 1001, and the acute-angle notch 1001 is adapted to the shape of the acute-angle stop 8 and is abutted against the acute-angle stop 8; the first comb tooth plate 1 or the second comb tooth plate 2 is connected to the stop seat 10 via a connecting member 11.

[0051] The telescopic device is subjected to repeated loads during use, which can easily cause premature fatigue. If the fastening bolts (or screws) are loosened, the comb plate will rotate and tilt out, causing debris to easily get stuck in the comb gap 9, affecting the telescopic device. Therefore, in order to improve the above situation, an acute angle stop 8 is set on the side of the first comb plate 1 and the second comb plate 2 away from the gap 3, which is adapted to and abuts against the acute angle notch 1001 of the stop seat 10, forming a tight bite structure, and the fixed connection is completed by bolts and other connecting parts 11, and then the wheel applies external force, that is, it contacts the comb plate to generate an upward reaction force. The bolt part-connecting part 11 no longer acts as a tensile resistance, but as a fulcrum, transmitting the upward reaction force to the root of the comb plate (that is, the end away from the gap 3). Since the root of the comb plate fits the acute angle stop 8, the comb plate is limited by the acute angle stop 8, so that the comb plate cannot tilt up. At the same time, due to the effect of the stop seat 10, the bolt no longer bears radial force, effectively preventing the bolt from loosening.

[0052] At the same time, the presence of the stop seat 10 can also provide additional protection for the comb plate and the support frame 4, reduce the erosion of external environmental factors (such as rain, dust, corrosive substances, etc.), extend the service life of the components, and avoid local stress concentration from causing damage to the comb plate and the support frame 4.

[0053] like Figure 1 , Fig.11 As shown, in some examples, the first comb plate 1 and the second comb plate 2 are both T-shaped, and both have a connecting portion 12 at the bottom, and the connecting portion 12 and the support frame 4 are configured to be connected to concrete.

[0054] The T-shaped comb plate design is more stable in structure than the conventional shape. The connection part 12 at the bottom increases the contact area with the concrete. It can better maintain its own shape when bearing vehicle loads and bridge deformation stress, avoid bending or breakage due to uneven force, and ensure the normal operation of the telescopic device.

[0055] like Figure 5 , Figure 6 , Figure 10~Figure 12 As shown, in some examples, it also includes: both ends of the waterstop 13 are detachably connected to the two connecting parts 12, a space 14 is formed between the waterstop 13, the first comb plate 1 and the second comb plate 2, the space 14 has an opening 1401, the gap 3, the space 14, the opening 1401 and the exhaust pipe 5 are connected in sequence, and the waterstop 13 is located below the opening 1401; both ends of the arc support plate 15 are detachably connected to the two connecting parts 12, respectively, and are located between the waterstop 13 and the opening 1401, the arc support plate 15 has an opening 2 1501 and a through hole 1502, the opening 2 1501 faces the waterstop 13, and the through hole 1502 is configured to pass water.

[0056] The two ends of the waterstop 13 are detachably connected to the connecting part 12, which effectively prevents rainwater, snow melting agent and other liquids from penetrating into the internal structure of the bridge from the gap 3 of the telescopic device, avoids steel corrosion and concrete deterioration, and extends the service life of the bridge. The gap 3, space 14, opening 1401 and exhaust pipe 5 are connected in sequence, and the connection between the gap 3 and the connecting port of the exhaust pipe 5 is successfully completed; further, the arc support plate 15 is arranged between the waterstop 13 and the opening 1401, and its through hole 1502 can guide the accumulated water to pass through. The opening 2 1501 faces the waterstop 13, which can prevent dust or pebbles from accumulating on the waterstop 13, ensure smooth drainage, reduce water erosion of the telescopic device, and make the space 14 above the arc support plate 15, which is easy to generate noise-airflow, closer to the exhaust pipe 5, so that when telescoping, the gas therein is faster and more inclined to flow into the exhaust pipe 5; specifically, the through hole 1502 has a small diameter and is arranged in several groups at intervals to achieve the purpose of drainage.

[0057] In addition, the arc-shaped support plate 15 can be in the form of a steel plate, with the second opening 1501 facing downward and the steel plate arched upward, which can provide a certain elastic reset effect when in use to bear the external force caused by expansion and contraction.

[0058] like Figure 5 , Figure 6 , Figure 10~Figure 12 As shown, in some examples, there are two arc-shaped support plates 15 , the two arc-shaped support plates 15 are arranged vertically at intervals, the through holes 1502 are strip-shaped through holes, and the two through holes 1502 are cross-arranged.

[0059] The two arc-shaped support plates 15 are arranged at intervals along the vertical direction to prevent dust or pebbles from accumulating on the water stop belt 13 at the same height, fully utilize the space 14, and play a role in drainage. Therefore, two through holes 1502 are designed to be cross-set, which can be perpendicular to each other or at a certain angle to form a grid-like structure, which can intercept larger debris coming with the water flow and reduce the maintenance cost caused by the accumulation of debris.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, which should be included in the scope of the claims of the present disclosure.

Claims

1. A comb-tooth bridge expansion device, comprising: A first comb tooth plate (1) and a second comb tooth plate (2), wherein a gap (3) is provided between the first comb tooth plate (1) and the second comb tooth plate (2), and the device is characterized in that it further comprises: A plurality of support frames (4), wherein the support frames (4) are arranged at the bottom of the first comb tooth plate (1) and / or the second comb tooth plate (2), and the plurality of support frames (4) are arranged along the length direction of the first comb tooth plate (1); a plurality of exhaust pipes (5), wherein the exhaust pipes (5) are arranged in the support frame (4) and are connected to the gap (3), and the plurality of exhaust pipes (5) are connected in sequence; A porous sound absorbing member (6), the porous sound absorbing member (6) being arranged in the exhaust pipe (5), the porous sound absorbing member (6) being connected to a plurality of the exhaust pipes (5) and being used to absorb airflow noise in the exhaust pipes (5); The support frame (4) is U-shaped, and both ends of the support frame (4) are fixedly connected to the first comb tooth plate (1) or the second comb tooth plate (2), and further comprises: An elastic extrusion member (7), wherein the elastic extrusion member (7) is arranged on the support frame (4) and is located on one side of the exhaust pipe (5), and the elastic extrusion member (7) abuts against the exhaust pipe (5).

2. The comb-tooth bridge expansion device according to claim 1, characterized in that: The number of the porous sound absorbing components (6) is at most three, and the porous sound absorbing components (6) are porous sound absorbing tubes, and the exhaust pipe (5) is sleeved on the outer wall of the porous sound absorbing component (6).

3. The comb-tooth bridge expansion device according to claim 1, characterized in that: The elastic extrusion member (7) has a mounting portion (701), and the elastic extrusion member (7) is threadedly connected to the support frame (4) via the mounting portion (701).

4. The comb-tooth bridge expansion device according to claim 1, characterized in that: The elastic extrusion piece (7) is a hollow elastic extrusion piece, and the elastic extrusion piece (7) is in the shape of an equilateral triangle.

5. The comb-tooth bridge expansion device according to claim 1, characterized in that: The exhaust pipe (5) has a limiting ring (501) at the end thereof, and the limiting rings (501) of two adjacent exhaust pipes (5) are respectively located on both sides of the support frame (4), and both ends of the elastic extrusion member (7) have an annular limiting groove (702), and the limiting ring (501) is located in the annular limiting groove (702).

6. The comb-tooth bridge expansion device according to claim 1, characterized in that: The first comb plate (1) has a side away from the slit (3) and the second comb plate (2) has a side away from the slit (3) with an acute angle stop (8), the acute angle stop (8) is located above the support frame (4) and forms a gap (9) with the support frame (4), and further comprises: a stopper seat (10), the stopper seat (10) being arranged in the gap (9), the stopper seat (10) having an acute-angle notch (1001), the acute-angle notch (1001) being adapted in shape to the acute-angle stopper (8), and being arranged in contact with the acute-angle stopper (8); A connecting piece (11), wherein the first comb tooth plate (1) or the second comb tooth plate (2) is connected to the stop seat (10) via the connecting piece (11).

7. The comb-tooth bridge expansion device according to claim 1, characterized in that: The first comb plate (1) and the second comb plate (2) are both T-shaped, and both have a connecting portion (12) at the bottom, and the connecting portion (12) and the support frame (4) are configured to be connected to concrete.

8. The comb-tooth bridge expansion device according to claim 7, characterized in that: Also includes: a water stop strip (13), wherein two ends of the water stop strip (13) are respectively detachably connected to the two connecting parts (12); a space (14) is formed between the water stop strip (13), the first comb plate (1) and the second comb plate (2); the space (14) has an opening (1401); the gap (3), the space (14), the opening (1401) and the exhaust pipe (5) are connected in sequence; and the water stop strip (13) is located below the opening (1401); An arc-shaped support plate (15), wherein both ends of the arc-shaped support plate (15) are detachably connected to the two connecting parts (12), respectively, and are located between the water stop strip (13) and the opening one (1401); the arc-shaped support plate (15) has an opening two (1501) and a through hole (1502); the opening two (1501) faces the water stop strip (13), and the through hole (1502) is configured to allow water to pass through.

9. The comb-tooth bridge expansion device according to claim 8, characterized in that: There are two arc-shaped support plates (15), and the two arc-shaped support plates (15) are arranged at intervals in the vertical direction; the through holes (1502) are strip-shaped through holes, and the two through holes (1502) are arranged crosswise.

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