Expansion joint structure

Abstract

The utility model relates to the field of road facilities, and discloses an expansion joint structure which comprises a left bridge and a right bridge and further comprises a left base, a right base, a locking mechanism and a sealing rubber strip. A left groove with an opening facing the right side is formed in the left base, a right groove with an opening facing the left side is formed in the right base, and the left end and the right end of the sealing rubber strip are inserted into the left groove and the right groove respectively. The two locking mechanisms are arranged on the left base and the right base correspondingly and used for clamping the left end and the right end of the sealing rubber strip into the left groove and the right groove correspondingly.

Description

Technical Field

[0001] The utility model relates to the field of road facilities, in particular to an expansion joint structure. Background Technique

[0002] The bridge expansion joint is a gap set in the bridge structure, which is used to adjust the displacement and connection of the upper structure caused by factors such as vehicle load and temperature change. The current bridge expansion joint structures mainly include various forms such as butt joint type, steel plate type, combined shear type, modulus support type and seamless type. When the required bridge expansion amount is less than 80 mm, a butt joint type expansion joint structure with a simple structure is usually adopted.

[0003] The butt joint type expansion joint structure mostly has a single seam setting. The rubber sealing strip in the butt joint type expansion joint structure can not only be used for waterproofing and dustproofing, but also adapt to the displacement deformation of the bridge through the deformation of the rubber sealing strip. However, its rubber sealing strip mainly relies on the elastic force of the rubber sealing strip itself and is fitted on the side beam in an interference manner. Under long-term use, the rubber sealing strip is prone to falling off. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to solve at least one of the above-mentioned technical problems.

[0005] The solution of the utility model to solve its technical problem is:

[0006] An expansion joint structure, including a left bridge and a right bridge. The expansion joint structure further includes a left base, a right base, a locking mechanism and a sealing strip. The left base and the right base are respectively fixed on the left bridge and the right bridge. A left groove with an opening facing right is formed on the left base, and a right groove with an opening facing left is provided on the right base. The left and right ends of the sealing strip are respectively inserted into the left groove and the right groove. Two locking mechanisms are provided, and the two locking mechanisms are respectively arranged on the left base and the right base, and are respectively used for clamping the left and right ends of the sealing strip in the left groove and the right groove.

[0007] As a further improvement of the above technical solution, the left base includes a left side beam, a plurality of left anchor plates and a plurality of left anchor bars. The left groove is formed on the left side beam. All the left anchor plates are arranged at intervals in the front-rear direction. The left side beam is fixedly connected with all the left anchor plates. Each left anchor plate is fixedly connected with at least one left anchor bar, and the left anchor bar is welded to the embedded steel bar of the left bridge.

[0008] As a further improvement of the above technical solution, the left beam includes a bottom plate, an intermediate plate, a top plate and a vertical plate, all of the left anchor plates are fixedly connected to the bottom plate, the intermediate plates are arranged at intervals above the bottom plate, the top plate is arranged at intervals above the intermediate plate, the bottom plate, the intermediate plate and the top plate are respectively fixedly connected to the vertical plates, and the left groove is formed between the vertical plates, the top plate and the middle plates.

[0009] As a further improvement of the above technical solution, the vertical plate and the bottom plate are fixedly connected to form a L shape, and a notch extending in a length direction is opened on the left side edge of the left anchor plate, and the bottom plate is inserted into the notch so that the left anchor plate supports the lower side surface of the bottom plate, and the left anchor plate fits the left side surface of the vertical plate.

[0010] As a further improvement of the above technical solution, the right base includes a right beam, multiple right anchor plates and multiple right anchor bars. The right groove is opened on the right beam. All the right anchor plates are arranged at intervals in the front-to-back direction. The right beam and all the right anchor plates are fixedly connected. Each of the right anchor plates is fixedly connected by at least one right anchor bar. The right anchor bar is welded to the embedded steel bars of the right bridge.

[0011] As a further improvement of the above technical solution, the left base and the right base are arranged as mirror images of each other.

[0012] As a further improvement of the above technical solution, the sealing strip includes a left plug-in portion, a right plug-in portion and a connecting portion, the connecting portion is arranged in a V-shape, and the left and right ends of the V-shaped connecting portion are respectively fixedly connected to the left plug-in portion and the right plug-in portion, the left plug-in portion is inserted into the left groove, and the right plug-in portion is inserted into the right groove.

[0013] As a further improvement of the above technical solution, the left plug-in portion includes a C-shaped end and a clamping portion connected to the upper portion of the C-shaped end, the C-shaped end and the clamping portion are both arranged in the left groove, and the upper side wall at the outlet of the left groove extends downward to form a left clamping block, and the clamping portion and the left side surface of the left clamping block are in contact with each other.

[0014] As a further improvement of the above technical solution, a guiding hole penetrating through the thickness of the intermediate plate is formed on the intermediate plate. The locking mechanism includes a screw rod, a spring and two nuts. The screw rod is inserted into the guiding hole, and the guiding hole and the screw rod can slide relative to each other. Both of the two nuts are in threaded engagement with the screw rod. The two nuts are arranged between the intermediate plate and the bottom plate. The spring is sleeved on the screw rod. The upper end of the spring is connected to the lower nut of the two nuts, and the lower end of the spring is connected to the bottom plate. A chamfer is provided at the top surface of the screw rod near the edge of the sealing strip, and the chamfer is inclined upward.

[0015] As a further improvement of the above technical solution, a raised rib extending along the depth direction of the guiding hole is provided on the inner wall of the guiding hole, and a card slot extending along the length direction of the screw rod is provided on the screw rod. The raised rib is inserted into the card slot, and the raised rib and the card slot can slide relative to each other up and down.

[0016] The beneficial effects of the present utility model are as follows: A telescopic joint is provided between the left bridge and the right bridge. The left base and the right base are respectively fixed on the left bridge and the right bridge. The two ends of the sealing strip are respectively inserted into the left groove and the right groove. Through the elastic force of the sealing strip itself, the two ends of the sealing strip are tensioned in the left groove and the right groove. The two locking mechanisms respectively press the two ends of the sealing strip into the inner walls of the left groove and the right groove, which can effectively increase the maximum static friction force between the sealing strip and the left groove and the right groove, and reduce the possibility of the natural falling off of the sealing strip during use. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present utility model, rather than all the embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the left base, right base, locking mechanism and sealing strip of the present utility model.

[0019] Figure 2 It is a front view of the left anchor plate of the present utility model;

[0020] Figure 3 It is a side view of the anchor plate and anchor bar of the present utility model;

[0021] Figure 4 It is a top view of the guiding hole and raised rib on the intermediate plate of the present utility model.

[0022] In the attached drawings: 11 - left groove, 12 - left side beam, 121 - bottom plate, 122 - middle plate, 1221 - guiding hole, 123 - top plate, 124 - vertical plate, 13 - left anchor plate, 131 - notch, 14 - left anchor bar, 21 - right groove, 22 - right side beam, 23 - right anchor plate, 24 - right anchor bar, 31 - connecting part, 321 - C-shaped end, 322 - clamping part, 33 - right inserting part, 41 - screw rod, 42 - nut, 43 - spring, 44 - chamfer, 45 - raised rib. Specific embodiments

[0023] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and the attached drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present utility model. In addition, all the connection relationships mentioned in the text do not refer only to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the present invention can be combined interactively without conflicting with each other.

[0024] Referring to Figures 1 to 4 , a expansion joint structure, including a left bridge (not shown in the attached drawings) and a right bridge (not shown in the attached drawings), the expansion joint structure further includes a left base, a right base, a locking mechanism and a sealing strip. The left base and the right base are respectively fixed on the left bridge and the right bridge. The left base is provided with a left groove 11 with an opening facing rightward, and the right base is provided with a right groove 21 with an opening facing leftward. The left and right ends of the sealing strip are respectively inserted into the left groove 11 and the right groove 21. Two locking mechanisms are provided, and the two locking mechanisms are respectively arranged on the left base and the right base, and the two locking mechanisms are respectively used for clamping the left and right ends of the sealing strip in the left groove 11 and the right groove 21.

[0025] From the above, there is an expansion joint between the left bridge and the right bridge. The left base and the right base are respectively fixed on the left bridge and the right bridge. The two ends of the sealing strip are respectively inserted into the left groove 11 and the right groove 21. Through the elasticity of the sealing strip itself, the two ends of the sealing strip are tensioned in the left groove 11 and the right groove 21. The two locking mechanisms respectively press the two ends of the sealing strip into the inner walls of the left groove 11 and the right groove 21, which can effectively increase the maximum static friction between the sealing strip and the left groove 11 and the right groove 21, and reduce the possibility of the natural detachment of the sealing strip during use.

[0026] In some embodiments, the left base includes a left side beam 12, a plurality of left anchoring plates 13, and a plurality of left anchoring bars 14. The left groove 11 is formed in the left side beam 12. All the left anchoring plates 13 are arranged at intervals in the front-rear direction. The left side beam 12 is fixedly connected to all the left anchoring plates 13. Each left anchoring plate 13 is fixedly connected to at least one left anchoring bar 14. The left anchoring bar 14 is welded to the embedded steel bars of the left bridge. During use, the left anchoring bar 14 is arranged on the left anchoring plate 13 and extends downward beyond the left anchoring plate 13. The left side beam 12 can be used to transfer the load pressed by the vehicle to the left anchoring plate 13, and then the left anchoring plate 13 transfers the load to the left anchoring bar 14 and the left bridge in sequence.

[0027] In some embodiments, the left anchoring bar 14 includes a U-shaped base section and a connecting section. Both ends of the U-shaped base section are fixed on the left anchoring plate 13. The connecting section is fixedly connected to one end of the U-shaped base section. The connecting section is inclined and fixed on the left anchoring plate 13. In this way, the left anchoring bar 14 and the left anchoring plate 13 are firmly connected. At the same time, the structure of the left anchoring bar 14 is simple and convenient to set.

[0028] In some embodiments, the left side beam 12 includes a bottom plate 121, an intermediate plate 122, a top plate 123, and a vertical plate 124. All the left anchoring plates 13 are fixedly connected to the bottom plate 121. The intermediate plate 122 is arranged above the bottom plate 121 at intervals. The top plate 123 is arranged above the intermediate plate 122 at intervals. The bottom plate 121, the intermediate plate 122, and the top plate 123 are respectively fixedly connected to the vertical plate 124. The left groove 11 is formed among the vertical plate 124, the top plate 123, and the intermediate plate 122. This structure is simple and convenient to set. Through the arrangement of the bottom plate 121, the top plate 123, and the vertical plate 124, the downward pressure load received by the top plate 123 can be stably transferred to the left anchoring plate 13. Through the arrangement of the intermediate plate 122, the left groove 11 is formed among the intermediate plate 122, the top plate 123, and the vertical plate 124, so as to facilitate the insertion of the left end of the sealing strip.

[0029] In some embodiments, the vertical plate 124 and the bottom plate 121 are fixedly connected to form a ┴-shaped structure. A notch 131 extending along a direction is formed on the left side edge of the left anchoring plate 13. The bottom plate 121 is inserted into the notch 131, so that the left anchoring plate 13 supports the lower side surface of the bottom plate 121, and the left anchoring plate 13 fits the left side surface of the vertical plate 124. Through the arrangement of this structure, the contact area between the left anchoring plate 13 and the vertical plate 124 and the bottom plate 121 is large, and the load received by the left side beam 12 can be stably transferred to the left anchoring plate 13.

[0030] In some embodiments, the right base includes a right side beam 22, a plurality of right anchor plates 23, and a plurality of right anchor bars 24. The right groove 21 is formed in the right side beam 22. All the right anchor plates 23 are arranged at intervals in the front-rear direction. The right side beam 22 is fixedly connected to all the right anchor plates 23. Each right anchor plate 23 is fixedly connected to at least one right anchor bar 24. The right anchor bar 24 is welded to the embedded steel bars of the right bridge. During use, the right anchor bar 24 is arranged on the right anchor plate 23 and extends downward beyond the right anchor plate 23. The right side beam 22 can be used to transfer the load pressed by the vehicle to the right anchor plate 23, and then the right anchor plate 23 transfers the load to the right anchor bar 24 and the right bridge in sequence.

[0031] In some embodiments, the left base and the right base are arranged as mirror images of each other. This structure is simple and convenient to set up.

[0032] In some embodiments, the sealing strip includes a left insertion part, a right insertion part 33, and a connecting part 31. The connecting part 31 is arranged in a V shape. The left and right ends of the V-shaped connecting part 31 are respectively fixedly connected to the left insertion part and the right insertion part 33. The left insertion part is inserted into the left groove 11, and the right insertion part 33 is inserted into the right groove 21. The sealing strip mainly functions to prevent water and dust. The connecting part 31 is arranged in a V shape. When the left bridge and the right bridge move relative to each other, the V-shaped connecting part 31 can deform accordingly to adapt to the relative movement between the left bridge and the right bridge.

[0033] In some embodiments, the left insertion part includes a C-shaped end 321 and a clamping part 322 connected to the upper part of the C-shaped end 321. The C-shaped end 321 and the clamping part 322 are both arranged in the left groove 11. The upper side wall at the outlet of the left groove 11 extends downward to form a left clamping block. The clamping part 322 is in contact with the left side surface of the left clamping block. This structure is simple and convenient to set up. Through the arrangement of the left clamping block and the clamping part 322, the stability of the left insertion part inserted into the left groove 11 is improved, so that the left insertion part is not easily separated from the left groove 11.

[0034] In some embodiments, the middle plate 122 is provided with a guide hole 1221 that penetrates the thickness of the middle plate 122, the locking mechanism includes a screw 41, a spring 43 and two nuts 42, the screw 41 is inserted in the guide hole 1221, the guide hole 1221 and the screw 41 can slide relative to each other, the two nuts 42 are threadedly matched with the screw 41, the two nuts 42 are arranged between the middle plate 122 and the bottom plate 121, the spring 43 is sleeved on the screw 41, the upper end of the spring 43 is connected to the lower nut 42 of the two nuts 42, the lower end of the spring 43 is connected to the bottom plate 121, and the top surface of the screw 41 is provided with a chamfer 44 near the edge of the sealing strip, and the chamfer 44 is inclined upward. When in use, the tightness of the spring 43 can be adjusted by adjusting the threaded matching position of the nut 42 and the screw 41. By adopting the setting of two nuts 42, self-locking can be achieved by using the two nuts 42, reducing the angle at which the nuts 42 rotate during use. The setting of the chamfer 44 can facilitate the insertion of the end of the sealing strip. In addition, when the end of the sealing strip is inserted, under the action of the spring 43, the screw 41 is pushed up, which can press the sealing strip and reduce the possibility of the sealing strip falling off. In some embodiments, the lower end of the C-shaped end 321 is supported by the screw 41, further reducing the possibility of the sealing strip withdrawing from the left groove 11 by itself. Since the left base and the right base are mirror images of each other, the right base is not further described.

[0035] In some embodiments, the inner wall of the guide hole 1221 is provided with a raised rib 45 extending in the depth direction of the guide hole 1221, and the screw rod 41 is provided with a slot extending in the length direction of the screw rod 41, and the raised rib 45 is inserted into the slot, and the raised rib 45 and the slot can slide up and down relatively. Through the setting of this structure, the screw rod 41 can be effectively restricted from rotating around its own axis to ensure that the chamfer 44 is tilted upward toward the vertical plane where the middle of the sealing strip is located.

[0036] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An expansion joint structure, comprising a left bridge and a right bridge, characterized in that: It also includes a left base, a right base, a locking mechanism and a sealing strip, wherein the left base and the right base are respectively fixed to the left bridge and the right bridge, the left base is provided with a left groove (11) opening toward the right, the right base is provided with a right groove (21) opening toward the left, the left and right ends of the sealing strip are respectively inserted into the left groove (11) and the right groove (21), and two locking mechanisms are provided, the two locking mechanisms are respectively provided on the left base and the right base, and the two locking mechanisms are respectively used to clamp the left and right ends of the sealing strip in the left groove (11) and the right groove (21).

2. The expansion joint structure according to claim 1, characterized in that: The left base comprises a left beam (12), a plurality of left anchor plates (13) and a plurality of left anchor bars (14); the left groove (11) is provided on the left beam (12); all the left anchor plates (13) are arranged at intervals in the front-rear direction; the left beam (12) and all the left anchor plates (13) are fixedly connected; each of the left anchor plates (13) is fixedly connected by at least one left anchor bar (14); and the left anchor bar (14) is welded to the embedded steel bars of the left bridge.

3. The expansion joint structure according to claim 2, characterized in that: The left beam (12) comprises a bottom plate (121), an intermediate plate (122), a top plate (123) and a vertical plate (124); all the left anchor plates (13) are fixedly connected to the bottom plate (121); the intermediate plates (122) are arranged above the bottom plate (121) at intervals; the top plates (123) are arranged above the intermediate plates (122) at intervals; the bottom plate (121), the intermediate plate (122) and the top plate (123) are respectively fixedly connected to the vertical plate (124); and the left groove (11) is formed between the vertical plate (124), the top plate (123) and the middle plate (122).

4. The expansion joint structure according to claim 3, characterized in that: The vertical plate (124) and the bottom plate (121) are fixedly connected to form a L-shape, a notch (131) extending in a length direction is provided on the left side of the left anchor plate (13), and the bottom plate (121) is inserted into the notch (131), so that the left anchor plate (13) supports the lower side of the bottom plate (121), and the left anchor plate (13) fits the left side of the vertical plate (124).

5. The expansion joint structure according to claim 2, characterized in that: The right base comprises a right beam (22), a plurality of right anchor plates (23) and a plurality of right anchor bars (24); the right groove (21) is provided on the right beam (22); all the right anchor plates (23) are arranged at intervals along the front-rear direction; the right beam (22) and all the right anchor plates (23) are fixedly connected; each of the right anchor plates (23) is fixedly connected by at least one right anchor bar (24); and the right anchor bar (24) is welded to the embedded steel bars of the right bridge.

6. The expansion joint structure according to any one of claims 1 to 4, characterized in that: The left base and the right base are arranged in mirror image with each other.

7. The expansion joint structure according to claim 1, characterized in that: The sealing strip comprises a left plug-in portion, a right plug-in portion (33) and a connecting portion (31); the connecting portion (31) is arranged in a V-shape; the left and right ends of the V-shaped connecting portion (31) are respectively fixedly connected to the left plug-in portion and the right plug-in portion (33); the left plug-in portion is inserted into the left groove (11), and the right plug-in portion (33) is inserted into the right groove (21).

8. The expansion joint structure according to claim 7, characterized in that: The left plug-in portion comprises a C-shaped end portion (321) and a clamping portion (322) connected to the upper portion of the C-shaped end portion (321); the C-shaped end portion (321) and the clamping portion (322) are both arranged in the left groove (11); an upper side wall at an outlet of the left groove (11) extends downward to form a left clamping block; the clamping portion (322) is fitted to a left side surface of the left clamping block.

9. The expansion joint structure according to claim 3, characterized in that: The intermediate plate (122) is provided with a guide hole (1221) penetrating the thickness of the intermediate plate (122). The locking mechanism comprises a screw rod (41), a spring (43) and two nuts (42). The screw rod (41) is inserted into the guide hole (1221). The guide hole (1221) and the screw rod (41) can slide relative to each other. The two nuts (42) are threadedly matched with the screw rod (41). The two nuts (42) are arranged between the intermediate plate (122) and the bottom plate (121). The spring (43) is sleeved on the screw rod (41). The upper end of the spring (43) is connected to the lower nut (42) of the two nuts (42). The lower end of the spring (43) is connected to the bottom plate (121). A chamfer (44) is provided on the top surface of the screw rod (41) near the edge of the sealing strip. The chamfer (44) is inclined upward.

10. The expansion joint structure according to claim 9, characterized in that: The inner wall of the guide hole (1221) is provided with a raised rib (45) extending in the depth direction of the guide hole (1221); the screw rod (41) is provided with a clamping groove extending in the length direction of the screw rod (41); the raised rib (45) is inserted into the clamping groove; the raised rib (45) and the clamping groove can slide up and down relative to each other.

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