Comb tooth type bridge expansion device

Abstract

The utility model provides a comb tooth type bridge expansion device, and relates to the technical field of bridges. The comb tooth type bridge expansion device comprises a first comb tooth assembly and a second comb tooth assembly. The first comb tooth assembly comprises a first comb tooth plate, a first anchoring plate and a first reinforcing piece, the first anchoring plate is welded to the lower surface of the first comb tooth plate, the first reinforcing piece is welded to the lower surface of the first comb tooth plate, and the first anchoring plate is welded to the first reinforcing piece. The second comb plate assembly comprises a second comb plate, a second anchoring plate and a second reinforcing piece, the second anchoring plate is welded to the lower surface of the second comb plate, the second reinforcing piece is welded to the lower surface of the second comb plate, and the second anchoring plate is welded to the second reinforcing piece. The first comb plate and the second comb plate are arranged in a coplanar mode in the first direction, a plurality of comb teeth are arranged at the ends, close to each other, of the first comb plate and the second comb plate, and the comb teeth of the first comb plate and the second comb plate are arranged in a staggered mode; the first direction refers to the telescopic direction of the first comb plate and the second comb plate.

Description

Technical Field

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

[0002] Comb-tooth bridge expansion joints, located at both ends of a bridge, ensure the bridge's proper expansion and contraction under loads such as temperature and vehicle forces. Comb-tooth bridge expansion joints offer a large expansion range, shallow burial depth, simple installation, smooth vehicle travel, and excellent waterproofing, making them widely used on various bridge types.

[0003] However, in the comb-tooth bridge expansion device provided by the related art, bolts are often used to connect different components, which poses a risk of the bolts loosening and falling off; at the same time, there is also a risk of different components falling off and being damaged. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a comb-tooth type bridge expansion device, which has the advantage of firm connection between different components.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] An embodiment of the present application provides a comb-tooth type bridge expansion and contraction device, which includes a first comb-tooth plate assembly and a second comb-tooth plate assembly. The first comb-tooth plate assembly includes a first comb-tooth plate, a first anchor plate and a first reinforcement, the first anchor plate is welded to the lower surface of the first comb-tooth plate, the first reinforcement is welded to the lower surface of the first comb-tooth plate, and the first anchor plate is welded to the first reinforcement. The second comb-tooth plate assembly includes a second comb-tooth plate, a second anchor plate and a second reinforcement, the second anchor plate is welded to the lower surface of the second comb-tooth plate, the second reinforcement is welded to the lower surface of the second comb-tooth plate, and the second anchor plate is welded to the second reinforcement. Wherein, the first comb-tooth plate and the second comb-tooth plate are arranged coplanar along a first direction, and a plurality of comb teeth are provided at the ends of the first comb-tooth plate and the second comb-tooth plate that are close to each other, the comb teeth of the first comb-tooth plate and the comb teeth of the second comb-tooth plate are staggered, and the first direction refers to the expansion and contraction direction of the first comb-tooth plate and the second comb-tooth plate.

[0007] In a possible implementation of the present application, the first reinforcement member is a channel steel, the channel steel extends along the second direction, the outer surface of the upper leg of the channel steel is welded to the lower surface of the first comb plate, the opening of the channel steel faces the side away from the second comb plate, and the first anchor plate is welded to the opening of the channel steel, wherein the second direction is perpendicular to the first direction.

[0008] In one possible implementation of the present application, the contour shape of the first anchor plate near one end of the channel steel matches the shape of the opening of the channel steel, and the first anchor plate near one end of the channel steel is welded to the inner surface of the opening of the channel steel, the top surface of the upper leg and the top surface of the lower leg.

[0009] In a possible implementation of the present application, the first anchoring plate includes a first connecting portion and a second connecting portion, the projection of the first connecting portion along the vertical direction toward the first comb plate falls within the first comb plate, the projection of the second connecting portion along the vertical direction toward the first comb plate exceeds the first comb plate, and the first connecting portion is welded to the lower surface of the first comb plate.

[0010] In a possible implementation of the present application, both the first connecting portion and the second connecting portion are provided with a hollow structure.

[0011] In a possible implementation of the present application, the comb-tooth bridge expansion device also includes connecting steel bars, which are passed through the hollow structure.

[0012] In a possible implementation of the present application, the first anchor plate and the second anchor plate are symmetrically arranged about the center line of the comb-tooth type bridge expansion device extending along the second direction, and the first reinforcement and the second reinforcement are symmetrically arranged about the center line of the comb-tooth type bridge expansion device extending along the second direction; wherein the second direction is perpendicular to the first direction.

[0013] In a possible implementation of the present application, the comb-tooth type bridge expansion device also includes a sealing assembly, the sealing assembly includes a first sealing plate and a second sealing plate, the first sealing plate is connected to the first comb plate assembly and is attached to the lower surface of the first comb plate, the two ends of the first sealing plate along the first direction respectively extend beyond the roots of the comb teeth of the first comb plate and the roots of the comb teeth of the second comb plate, the second sealing plate is connected to the second comb plate assembly and is attached to the lower surface of the first sealing plate.

[0014] In a possible implementation of the present application, the first sealing plate and the second sealing plate are both stainless steel plates, one end of the stainless steel plate is provided with a connecting flange, and the connecting flange is welded to the corresponding first reinforcement member or the second reinforcement member.

[0015] In a possible implementation of the present application, the comb-tooth bridge expansion device also includes a waterproof component, which includes a first angle steel, a second angle steel and a rubber waterproof cloth. The first angle steel is abutted to the first reinforcement, the second angle steel is abutted to the second reinforcement, and the two ends of the rubber waterproof cloth are respectively connected to the inner surfaces of the first angle steel and the second angle steel.

[0016] In the comb-tooth type bridge expansion device provided in the embodiment of the present application, the first anchor plate is welded to the first comb plate to form a whole. Compared with the related art of connecting the first anchor plate and the first comb plate with bolts, the connection strength between the first anchor plate and the first comb plate can be improved. On this basis, by adding a first reinforcement between the first comb plate and the first anchor plate, and welding the first reinforcement to the lower surface of the first comb plate, and at the same time welding the first anchor plate to the first reinforcement, the first reinforcement can be used to increase the welding length and force area between the first comb plate and the first anchor plate, so that the structure of the first comb plate assembly can be more reasonable, and the first reinforcement plays a role in strengthening the connection between the first comb plate and the first anchor plate, thereby further improving the connection strength between the first anchor plate and the first comb plate, so that the first comb plate, the first anchor plate and the first reinforcement are not easy to fall off. Similarly, the second reinforcement can also be used to increase the welding length and stress-bearing area between the second comb plate and the second anchor plate, making the structure of the second comb plate assembly more reasonable and allowing the first reinforcement to play a role in strengthening the connection between the first comb plate and the first anchor plate, thereby further improving the connection strength between the second anchor plate and the second comb plate, making the second comb plate, the second anchor plate and the second reinforcement less likely to fall off. Through the above arrangement, the risk of damage to the first comb plate assembly and the second comb plate assembly can be reduced in the event that the concrete at the bottom beam end of the comb-tooth bridge expansion device has cavities, or the concrete is crushed or sinks under pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of the comb-tooth bridge expansion and contraction device provided in an embodiment of the present application;

[0018] Figure 2 A top view of the comb-tooth bridge expansion device provided in an embodiment of the present application;

[0019] Figure 3 A side view of a comb-tooth bridge expansion device provided in an embodiment of the present application;

[0020] Figure 4 A schematic structural diagram of a first comb plate of a comb-tooth bridge expansion device provided in an embodiment of the present application;

[0021] Figure 5 A schematic structural diagram of a first reinforcement member of a comb-tooth bridge expansion and contraction device provided in an embodiment of the present application;

[0022] Figure 6 A schematic structural diagram of the first anchor plate of the comb-tooth bridge expansion and contraction device provided in an embodiment of the present application;

[0023] Figure 7A schematic structural diagram of the first sealing plate of the comb-tooth type bridge expansion device provided in an embodiment of the present application.

[0024] Reference numerals:

[0025] 1. First comb plate assembly; 11. First comb plate; 12. First anchor plate; 121. First connecting portion; 122. Second connecting portion; 123. Hollow structure; 13. First reinforcement; 131. Channel steel; 2. Second comb plate assembly; 21. Second comb plate; 22. Second anchor plate; 23. Second reinforcement; 3. Sealing assembly; 31. First sealing plate; 311. Connecting flange; 32. Second sealing plate; 4. Waterproof assembly; 41. First angle steel; 42. Second angle steel; 43. Rubber waterproof cloth. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but are not intended to limit the scope of the present application.

[0027] To ensure the bridge's normal expansion and contraction capabilities under loads such as temperature and vehicle forces, comb-tooth bridge expansion and contraction devices are typically installed at both ends of the bridge. However, in such comb-tooth bridge expansion and contraction devices, there is a risk of component damage and detachment.

[0028] In view of this, the embodiment of the present application provides a comb-tooth bridge expansion device. Specifically, refer to Figures 1 to 3 The comb-tooth bridge expansion device provided in the embodiment of the present application includes a first comb-tooth plate assembly 1 and a second comb-tooth plate assembly 2. The first comb-tooth plate assembly 1 includes a first comb-tooth plate 11, a first anchoring plate 12 and a first reinforcement 13. The first anchoring plate 12 is welded to the lower surface of the first comb-tooth plate 11, and the first reinforcement 13 is welded to the lower surface of the first comb-tooth plate 11. At the same time, the first anchoring plate 12 is also welded to the first reinforcement 13. The second comb-tooth plate assembly 2 includes a second comb-tooth plate 21, a second anchoring plate 22 and a second reinforcement 23. The second anchoring plate 22 is welded to the lower surface of the second comb-tooth plate 21, and the second reinforcement 23 is welded to the lower surface of the second comb-tooth plate 21. At the same time, the second anchoring plate 22 is also welded to the second reinforcement 23. The first comb-tooth plate 11 and the second comb-tooth plate 21 are coplanarly arranged along the first direction. With reference to Figure 1 and Figure 4 The first comb plate 11 and the second comb plate 21 are each provided with a plurality of comb teeth at one end close to each other, and the comb teeth of the first comb plate 11 and the comb teeth of the second comb plate 21 are staggered. The first direction refers to the extension and retraction direction of the first comb plate 11 and the second comb plate 21.

[0029] It is understood that under the influence of loads such as temperature or external forces of the vehicle, the first comb plate 11 and the second comb plate 21 can move away from or toward each other. The first direction refers to the direction in which the first comb plate 11 and the second comb plate 21 extend and contract. It can also be considered that the first direction refers to the direction in which the first comb plate 11 and the second comb plate 21 move away from or toward each other. By providing comb teeth at one end of the first comb plate 11 and at one end of the second comb plate 21, and by staggering the comb teeth of the first comb plate 11 and the comb teeth of the second comb plate 21, the comb teeth can be used to compensate for the gap between the first comb plate 11 and the second comb plate 21 when the first comb plate 11 and the second comb plate 21 move toward or away from each other.

[0030] On this basis, in the embodiment of the present application, the first anchor plate 12 is welded to the lower surface of the first comb plate 11. Therefore, the first anchor plate 12 can be anchored to the bridge or road, and thus, the first comb plate 11 can be anchored to the bridge or road through the first anchor plate 12. At the same time, the second anchor plate 22 is welded to the lower surface of the second comb plate 21. Therefore, the second anchor plate 22 can be anchored to the bridge or road, and thus, the second comb plate 21 can be anchored to the bridge or road through the second anchor plate 22.

[0031] It should be noted that in the embodiment of the present application, the specific structural form of the first reinforcement 13 and the second reinforcement 23 is not limited. The first reinforcement 13 plays a role in strengthening the connection between the first comb plate 11 and the first anchor plate 12, and the second reinforcement 23 plays a role in strengthening the connection between the second comb plate 21 and the second anchor plate 22. For example, in the embodiment of the present application, the first reinforcement 13 or the second reinforcement 23 can be set to various structures such as channel steel 131, angle steel or H-shaped steel.

[0032] Specifically, in the embodiment of the present application, the channel steel 131 can be welded to the lower surface of the first comb plate 11 to form the first reinforcement 13. On this basis, the first anchor plate 12 can be welded to the lower surface of the first comb plate 11 and the first reinforcement 13 at the same time.

[0033] Through the above-mentioned arrangement, in the comb-tooth bridge expansion device provided in the embodiment of the present application, the first anchor plate 12 is welded to the first comb plate 11 to form a whole. Compared with the related art of connecting the first anchor plate 12 and the first comb plate 11 with bolts, the connection strength between the first anchor plate 12 and the first comb plate 11 can be improved. On this basis, the first reinforcement 13 is added between the first comb plate 11 and the first anchor plate 12, and the first reinforcement 13 is welded to the lower surface of the first comb plate 11. At the same time, By welding the first anchor plate 12 to the first reinforcement 13, the first reinforcement 13 can be used to increase the welding length and stress area between the first comb plate 11 and the first anchor plate 12, so that the structure of the first comb plate assembly 1 can be more reasonable, and the first reinforcement 13 can play a role in strengthening the connection between the first comb plate 11 and the first anchor plate 12, thereby further improving the connection strength between the first anchor plate 12 and the first comb plate 11, making the first comb plate 11, the first anchor plate 12 and the first reinforcement 13 not easy to fall off. Similarly, the second reinforcement 23 can also be used to increase the welding length and stress-bearing area between the second comb plate 21 and the second anchor plate 22, making the structure of the second comb plate assembly 2 more reasonable and allowing the first reinforcement 13 to play a role in strengthening the connection between the first comb plate 11 and the first anchor plate 12, thereby further improving the connection strength between the second anchor plate 22 and the second comb plate 21, making it less likely for the second comb plate 21, the second anchor plate 22 and the second reinforcement 23 to fall off. Through the above arrangement, the risk of damage to the first comb plate assembly 1 and the second comb plate assembly 2 can be reduced in the event that the concrete at the bottom beam end of the comb-tooth bridge expansion device has cavities, or the concrete is crushed or sinks under pressure.

[0034] On this basis, refer to Figure 1 、 Figure 3 and Figure 5 In some embodiments of the present application, the first reinforcement 13 is a channel steel 131, the channel steel 131 extends along the second direction, the outer surface of the upper leg of the channel steel 131 is welded to the lower surface of the first comb plate 11, the opening of the channel steel 131 faces the side away from the second comb plate 21, and the first anchor plate 12 is welded to the opening of the channel steel 131, wherein the second direction is perpendicular to the first direction.

[0035] It is understood that the channel steel 131 has an opening on one side, and legs are provided on both sides of the opening. In the embodiment of the present application, the opening of the channel steel 131 faces the side away from the second comb plate 21, which is equivalent to arranging the opening of the channel steel 131 horizontally, and the opening of the channel steel 131 faces the side away from the second comb plate 21. Therefore, the legs of the channel steel 131 form an upper leg and a lower leg.

[0036] Further, refer to Figure 3 The outer surface of the upper leg of the channel steel 131 is welded to the lower surface of the first comb plate 11 , and the first anchor plate 12 is welded to the opening of the channel steel 131 .

[0037] It should be noted that in the embodiment of the present application, the channel steel 131 extends along the second direction, where the second direction is perpendicular to the first direction. In this regard, the second direction can also be considered as the length direction of the first comb plate 11, or the width direction of the bridge or road.

[0038] It is understandable that the outer surface of the upper leg of the channel steel 131 has a certain size, which can provide good support and anchoring for the first comb plate 11, increase the strength of the connection between the first comb plate 11 and the channel steel 131, and prevent the first comb plate 11 from falling off the channel steel 131 or the first anchor plate 12 and causing damage to the concrete. At the same time, in the embodiment of the present application, the outer surface of the lower leg of the channel steel 131 can be used to support the concrete at the end of the beam. Compared with only the vertical surface, the outer surface of the lower leg of the channel steel 131 has a certain size, which can increase the force-bearing area between the concrete at the end of the beam, avoid shear damage to the concrete at the end of the beam, and extend the service life of the concrete at the end of the beam. At the same time, the first reinforcement 13 is set as the channel steel 131. When the comb-tooth bridge expansion device is cast, the channel steel 131 can also be used as a casting template, avoiding leakage of concrete during casting and running out of the template, which can ensure the quality of construction.

[0039] Further, refer to Figure 3 、 Figure 5 and Figure 6 In some embodiments of the present application, the contour shape of one end of the first anchor plate 12 close to the channel steel 131 matches the shape of the opening of the channel steel 131, and the end of the first anchor plate 12 close to the channel steel 131 is welded to the inner surface of the opening of the channel steel 131, the top surface of the upper leg of the channel steel 131, and the top surface of the lower leg of the channel steel 131.

[0040] Specifically, refer to Figure 3In some embodiments of the present application, the width of the end of the first anchor plate 12 near the channel steel 131 can be set to be the same as the width of the channel steel 131. On this basis, the contour shape of the end of the first anchor plate 12 near the channel steel 131 can also be set according to the shape of the opening of the channel steel 131, so that the contour shape of the end of the first anchor plate 12 near the channel steel 131 matches the shape of the opening of the channel steel 131, so that the end of the first anchor plate 12 near the channel steel 131 can be fully in contact with the inner surface of the opening of the channel steel 131, the top surface of the upper leg of the channel steel 131, and the top surface of the lower leg of the channel steel 131. As a result, the end of the first anchor plate 12 near the channel steel 131 can be welded to the inner surface of the opening of the channel steel 131 and the top surface of the lower leg of the channel steel 131.

[0041] Through the above-mentioned arrangement, in the comb-tooth type bridge expansion device provided in the embodiment of the present application, by setting the contour shape of the end of the first anchor plate 12 close to the channel steel 131 to match the shape of the opening of the channel steel 131, the end of the first anchor plate 12 close to the channel steel 131 can be completely connected with the inner surface of the opening of the channel steel 131, the top surface of the upper leg of the channel steel 131 and the top surface of the lower leg of the channel steel 131, thereby improving the connection strength between the first anchor plate 12 and the channel steel 131 and preventing separation between the first anchor plate 12 and the channel steel 131.

[0042] In addition, refer to Figure 3 and Figure 6 In some embodiments of the present application, the first anchoring plate 12 includes a first connecting portion 121 and a second connecting portion 122. The projection of the first connecting portion 121 toward the first comb plate 11 in the vertical direction falls within the first comb plate 11, and the projection of the second connecting portion 122 toward the first comb plate 11 in the vertical direction exceeds the first comb plate 11. The first connecting portion 121 is welded to the lower surface of the first comb plate 11.

[0043] For example, refer to Figure 3 In some embodiments of the present application, the first anchoring plate 12 may be arranged to extend in the vertical direction. Figure 3 For the above description, it can also be considered that the first connecting portion 121 is located directly below the first comb plate 11, and the second connecting portion 122 protrudes from the first comb plate 11.

[0044] To this end, the connection position between the first connection part 121 and the lower surface of the first comb plate 11 can be extended all the way to the edge of the first comb plate 11. In this way, the welding length and force area between the first connection part 121 and the lower surface of the first comb plate 11 can be maximized, and the connection strength between the first connection part 121 and the lower surface of the first comb plate 11 can be improved.

[0045] Furthermore, in the embodiment of the present application, the second connecting portion 122 can be used to increase the connection area between the first anchor plate 12 and the concrete, thereby improving the connection strength between the first anchor plate 12 and the concrete, making it difficult for the comb-tooth type bridge expansion device in the embodiment of the present application to be displaced relative to the bridge, thereby ensuring normal use.

[0046] On this basis, refer to Figure 3 and Figure 6 In the comb-tooth bridge expansion device provided in the embodiment of the present application, the first connecting part 121 and the second connecting part 122 are both provided with a hollow structure 123.

[0047] For example, refer to Figure 6 In the embodiment of the present application, holes can be provided in the first connection portion 121 and the second connection portion 122 to form a hollow structure 123. Figure 6 In the embodiment of the present application, the shape of the hollow structure 123 can be set according to the shapes of the first connection part 121 and the second connection part 122. For example, in some embodiments of the present application, the shape of the main structure of the first connection part 121 can be set to a rectangle, and the shape of the main structure of the second connection part 122 can be set to a right triangle. The size of the second connection part 122 gradually decreases in the direction away from the second comb plate 21. On this basis, the shape of the hollow structure 123 in the first connection part 121 can be set to a rectangle, and the shape of the hollow structure 123 in the second connection part 122 can be set to a right triangle. In this way, the wall thickness of the first connection part 121 and the second connection part 122 can be ensured to be the same.

[0048] In the comb-tooth bridge expansion and contraction device provided in the embodiments of the present application, the provision of hollow structures 123 within both the first connecting portion 121 and the second connecting portion 122 reduces the weight of the first anchor plate 12, thereby reducing the weight of the comb-tooth bridge expansion and contraction device provided in the embodiments of the present application, reducing material usage and saving costs. Furthermore, when concrete is poured into the first anchor plate 12, the hollow structures 123 can be filled with concrete, thereby strengthening the connection between the concrete and the first anchor plate 12.

[0049] On this basis, some embodiments of the present application provide a comb-tooth bridge expansion device that further includes connecting steel bars, which are passed through the hollow structure 123 .

[0050] It is understandable that, referring to Figure 1 and Figure 2In the embodiment of the present application, the number of first reinforcement members 13 can be set to multiple, and the multiple first reinforcement members 13 can be arranged in an interval along the second direction. For this, a hollow structure 123 can be provided in which a connecting steel bar extending along the second direction passes through all the first reinforcement members 13.

[0051] It should be noted that in the embodiment of the present application, the number of connecting steel bars can be set to one, so that the connecting steel bar passes through the hollow structure 123 of the first connecting part 121 or the hollow structure 123 of the second connecting part 122; in addition, the number of connecting steel bars can be set to two, so that the two connecting steel bars pass through the hollow structure 123 of the first connecting part 121 and the hollow structure 123 of the second connecting part 122 respectively.

[0052] Through the above-mentioned arrangement, in the comb-tooth bridge expansion device provided in the embodiment of the present application, the connecting steel bars can be used to further increase the connection area between the first anchor plate 12 and the concrete, thereby further strengthening the connection between the concrete and the first anchor plate 12 .

[0053] It should be noted that, referring to Figures 1 to 3 In some embodiments of the present application, the first anchor plate 12 and the second anchor plate 22 are symmetrically arranged about the center line of the comb-tooth type bridge expansion device extending along the second direction, and the first reinforcement 13 and the second reinforcement 23 are symmetrically arranged about the center line of the comb-tooth type bridge expansion device extending along the second direction; wherein the second direction is perpendicular to the first direction.

[0054] It is understood that the comb-tooth bridge expansion device has a centerline extending along the first direction and a centerline extending along the second direction. In the embodiment of the present application, the first and second anchor plates 12, 22, and the first and second reinforcement members 13, 23 can be symmetrically arranged about the centerline extending along the second direction of the comb-tooth bridge expansion device.

[0055] For example, refer to Figure 1 and Figure 3 In some embodiments of the present application, the first reinforcement member 13 can be configured as a channel steel 131. For this purpose, the second reinforcement member 23 can also be configured as a channel steel 131 of the same size. Furthermore, the opening of the channel steel 131 of the first reinforcement member 13 is oriented in the opposite direction to the opening of the channel steel 131 of the second reinforcement member 23. In some embodiments of the present application, a hollow structure 123 can be provided on the first anchor plate 12. For this purpose, the second anchor plate 22 can be configured to have the same size as the first anchor plate 12 and also be provided with the hollow structure 123. For inserting connecting steel bars into the hollow structure 123 of the first anchor plate 12, the connecting steel bars can also be inserted into the hollow structure 123 of the second anchor plate 22.

[0056] It should be noted that when installing the first comb plate assembly 1 of the comb-tooth bridge expansion device provided in the embodiment of the present application, the first comb plate 11, the first anchor plate 12, and the first reinforcement 13 can be welded together. The first anchor plate 12 can then be welded to the embedded steel plate at the beam end. Finally, steel fiber or polyester fiber concrete can be poured to meet the normal expansion and contraction deformation of the bridge. The second comb plate assembly 2 can also be installed according to the above instructions.

[0057] Through the above-mentioned arrangement, in the comb-tooth type bridge expansion device provided in the embodiment of the present application, by arranging the first anchor plate 12 and the second anchor plate 22, the first reinforcement 13 and the second reinforcement 23 symmetrically about the center line extending in the second direction of the comb-tooth type bridge expansion device, the structure of the comb-tooth type bridge expansion device can be regular and easy to manufacture.

[0058] In addition, refer to Figure 3 In some embodiments of the present application, the comb-tooth bridge expansion device further includes a sealing assembly 3, which includes a first sealing plate 31 and a second sealing plate 32. The first sealing plate 31 is connected to the first comb plate assembly 1 and is attached to the lower surface of the first comb plate 11. The two ends of the first sealing plate 31 along the first direction extend beyond the roots of the comb teeth of the first comb plate 11 and the roots of the comb teeth of the second comb plate 21, respectively. The second sealing plate 32 is connected to the second comb plate assembly 2 and is attached to the lower surface of the first sealing plate 31.

[0059] It should be noted that in the embodiment of the present application, the first sealing plate 31 can be connected to the first reinforcement 13, the first comb plate 11 or the first anchor plate 12, and the embodiment of the present application is not limited to this; similarly, the second sealing plate 32 can be connected to the second reinforcement 23, the second comb plate 21 or the second anchor plate 22, and the embodiment of the present application is not limited to this.

[0060] For example, refer to Figure 3 In some embodiments of the present application, the first reinforcement member 13 can be configured as a channel steel 131, and the first sealing plate 31 can be connected to the bottom surface of the channel steel 131. At the same time, by setting the position and shape of the first sealing plate 31, the first sealing plate 31 can be placed in contact with the lower surface of the first comb plate 11. Moreover, by setting the size of the first sealing member, the ends of the first sealing plate 31 along the first direction can extend beyond the roots of the comb teeth of the first comb plate 11 and the roots of the comb teeth of the second comb plate 21, respectively.

[0061] Similarly, refer to Figure 3In some embodiments of the present application, the second reinforcement member 23 can be set as a channel steel 131, and the second sealing plate 32 can be connected to the bottom surface of the channel steel 131. At the same time, by setting the position and shape of the second sealing plate 32, the second sealing plate 32 can be attached to the lower surface of the second comb plate 21.

[0062] Through the above-mentioned setting, in the embodiment of the present application, the sealing component 3 can be used to play a sealing role between the comb teeth of the first comb plate 11 and the comb teeth of the second comb plate 21, preventing debris and the like from falling into the comb-tooth type bridge expansion device provided in the embodiment of the present application through the gap between the comb teeth of the first comb plate 11 and the comb teeth of the second comb plate 21.

[0063] On this basis, refer to Figure 7 In some embodiments of the present application, the first sealing plate 31 and the second sealing plate 32 are both stainless steel plates, and a connecting flange 311 is provided at one end of the stainless steel, and the connecting flange 311 is welded to the corresponding first reinforcement 13 or second reinforcement 23.

[0064] It should be noted that, in the embodiment of the present application, the connecting flange 311 of the first sealing plate 31 is welded to the first reinforcement 13 , and the connecting flange 311 of the second sealing plate 32 is welded to the second connection member.

[0065] Stainless steel plates have strong corrosion resistance. By using stainless steel plates for the first and second sealing plates 31 and 32, the service life of the first and second sealing plates 31 and 32 can be increased. Furthermore, by providing a connecting flange 311 at one end of the stainless steel plate, the connection area between the stainless steel plate and the first reinforcement 13 or the second reinforcement 23 can be increased, thereby improving the connection strength between the stainless steel plate and the first reinforcement 13 or the second reinforcement 23.

[0066] In addition, refer to Figure 1 and Figure 3 In some embodiments of the present application, the comb-tooth bridge expansion device also includes a waterproof component 4, which includes a first angle steel 41, a second angle steel 42 and a rubber waterproof cloth 43. The first angle steel 41 abuts against the first reinforcement 13, the second angle steel 42 abuts against the second reinforcement 23, and the two ends of the rubber waterproof cloth 43 are respectively connected to the inner surfaces of the first angle steel 41 and the second angle steel 42.

[0067] For example, refer to Figure 3For the first angle steel 41, the first leg of the first angle steel 41 can be connected to the bottom of the first reinforcement 13, and a gap can be provided between the second leg of the first angle steel 41 and the first reinforcement 13. To this end, one end of the rubber waterproof tape can be passed over the upper end of the second leg of the first angle steel 41 and connected to the inner surface of the second leg of the first angle steel 41. Similarly, the other ends of the second angle steel 42 and the rubber waterproof tape 43 can also be arranged according to the above description.

[0068] It is understood that in the embodiments of the present application, the comb-tooth bridge expansion and contraction device can be manufactured to a standard length, for example, the comb-tooth bridge expansion and contraction device in the embodiments of the present application can be manufactured to a length of one meter or two meters. In this way, for the width of the road or bridge, multiple comb-tooth bridge expansion and contraction devices can be arranged along the width of the road or bridge.

[0069] For this, the length of the waterproof component 4 can be set to the same as the width of the road or bridge. Now the waterproof component 4 is set at the end of the road or bridge, and then the comb-tooth type bridge setting device is installed, so that the first angle steel 41 abuts against the first reinforcement 13, and the second angle steel 42 abuts against the second reinforcement 23.

[0070] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "multiple" means two or more.

[0071] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0072] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0073] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0074] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0075] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. A comb-tooth bridge expansion device, characterized in that: include: a first comb plate assembly, the first comb plate assembly comprising a first comb plate, a first anchoring plate, and a first reinforcement, the first anchoring plate being welded to a lower surface of the first comb plate, the first reinforcement being welded to the lower surface of the first comb plate, and the first anchoring plate being welded to the first reinforcement; The first anchoring plate includes a first connecting portion and a second connecting portion, wherein a projection of the first connecting portion toward the first comb plate in a vertical direction falls within the first comb plate, and a projection of the second connecting portion toward the first comb plate in a vertical direction exceeds the first comb plate, and the first connecting portion is welded to a lower surface of the first comb plate; Both the first connecting portion and the second connecting portion are provided with a hollow structure; the main structure of the second connecting portion is shaped as a right triangle, so that the size of the second connecting portion gradually decreases in the direction away from the second comb plate; the hollow structure in the first connecting portion is shaped as a rectangle, and the hollow structure in the second connecting portion is shaped as a right triangle; a second comb plate assembly, the second comb plate assembly comprising a second comb plate, a second anchoring plate, and a second reinforcement member, the second anchoring plate being welded to a lower surface of the second comb plate, the second reinforcement member being welded to a lower surface of the second comb plate, and the second anchoring plate being welded to the second reinforcement member; The first comb plate and the second comb plate are arranged coplanarly along a first direction, and the ends of the first comb plate and the second comb plate that are close to each other are each provided with a plurality of comb teeth, and the comb teeth of the first comb plate and the second comb plate are arranged in an interlaced manner; the first direction refers to the extension and contraction direction of the first comb plate and the second comb plate; The comb-tooth bridge expansion and contraction device further includes a sealing assembly, which includes a first sealing plate and a second sealing plate. The first sealing plate is connected to the first comb-tooth plate assembly and is attached to the lower surface of the first comb-tooth plate. Both ends of the first sealing plate along the first direction extend beyond the roots of the comb teeth of the first comb-tooth plate and the roots of the comb teeth of the second comb-tooth plate, respectively. The second sealing plate is connected to the second comb-tooth plate assembly and is attached to the lower surface of the first sealing plate. The first sealing plate and the second sealing plate are both stainless steel plates. A connecting flange is provided at one end of the stainless steel plate, and the connecting flange is welded to the corresponding first reinforcement member or second reinforcement member.

2. The comb-tooth bridge expansion device according to claim 1, characterized in that: The first reinforcement member is a channel steel, which extends along the second direction. The outer surface of the upper leg of the channel steel is welded to the lower surface of the first comb plate. The opening of the channel steel faces the side away from the second comb plate, and the first anchor plate is welded to the opening of the channel steel, wherein the second direction is perpendicular to the first direction.

3. The comb-tooth bridge expansion device according to claim 2, characterized in that: The contour shape of one end of the first anchor plate close to the channel steel matches the shape of the opening of the channel steel, and the end of the first anchor plate close to the channel steel is welded to the inner surface of the opening of the channel steel, the top surface of the upper leg and the top surface of the lower leg.

4. The comb-tooth bridge expansion device according to claim 1, characterized in that: The comb-tooth bridge expansion device also includes connecting steel bars, which are inserted into the hollow structure.

5. The comb-tooth bridge expansion device according to any one of claims 1 to 4, characterized in that: The first anchor plate and the second anchor plate are symmetrically arranged about the center line of the comb-tooth type bridge expansion device extending along the second direction, and the first reinforcement and the second reinforcement are symmetrically arranged about the center line of the comb-tooth type bridge expansion device extending along the second direction; wherein, the second direction is perpendicular to the first direction.

6. The comb-tooth bridge expansion device according to claim 1, characterized in that: The comb-tooth bridge expansion device also includes a waterproof component, which includes a first angle steel, a second angle steel and a rubber waterproof cloth. The first angle steel is abutted to the first reinforcement, the second angle steel is abutted to the second reinforcement, and the two ends of the rubber waterproof cloth are respectively connected to the inner surfaces of the first angle steel and the second angle steel.

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