Integrally-installed long-service-life comb-tooth-shaped telescopic device
By designing an integrated installation of long-life comb-tooth telescopic device, the fixing and sliding connection of components such as water guide plates, comb-toothed plates, anchor plates, etc., the damage problem of bridge expansion device under multi-directional displacement is solved, and the durability and uptime of the bridge are improved.
Patent Information
- Application Number
- CN202420683296.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-04-03
AI Technical Summary
During use, existing bridge expansion devices are prone to multi-directional displacement problems such as hot and cold expansion, longitudinal swing and swaying, and lateral swing relative twisting during use. Especially in ultra-large span bridges, the expansion devices often suffer from various degrees of damage and are not easy to repair, which affects the durability and uptime of the bridge.
A long-life comb-shaped telescopic device that is integrated with integrated installation, which includes components such as water guide plates, comb-tooth plates, anchor plates, concrete blocks, limit holes, threaded cylinders and bolts. Through the fixed and sliding connections of these components, a strong structure can be formed, which can adapt to the multi-directional displacement of the bridge and achieve long-life use without replacement through the drainage tank of metal and cement concrete.
This device can effectively prevent silt and rainwater from entering the bridge expansion joints, reduce the problems of bolt loosening and rubber water conductor aging, extend the uptime of the bridge, and is suitable for various bridge types and expansion joints.
Smart Images
Figure CN222908533U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge expansion joints, in particular to an integrally installed long-life comb-tooth-shaped expansion device. Background Art
[0002] The bridge expansion device is a general term for various devices composed of rubber and steel components installed at the expansion point of the bridge to allow vehicles to pass smoothly through the bridge deck and meet the needs of deformation of the bridge superstructure. It is mainly composed of a force transmission support system and a displacement control system. Its main functions are to transfer the vertical and horizontal loads of the vehicle to the beam body through the support structure, and to adapt to the changes in the longitudinal and transverse displacements of the bridge and the angular changes caused by the warping of the beam end.
[0003] The bridge expansion device is an important connecting component between the ends of highway and railway bridge beams. It plays an important role in the expansion and contraction of the bridge ends, as well as the waterproof, dustproof, and shockproof properties. Its quality and performance will directly affect the durability of the entire bridge, and it is an important part of the construction of highway and railway bridges. Since the bridge expansion device is set at the weak part of the bridge deck at the end of the beam, and has been subjected to various natural environmental erosion effects, problems such as cold and hot expansion and contraction, longitudinal swaying and warping, and lateral swaying relative torsion (i.e., three-dimensional displacement, expansion and contraction and rotation) will occur during use. Especially for super-long span bridges, because a sufficient length (≥500mm) of expansion device is required, the expansion device often suffers various degrees of damage and is not easy to repair, which affects the overall durability of the bridge and shortens the normal operation time of the bridge.
[0004] However, no matter which type of comb teeth is used, there are the following imperfections: mud and sand accumulate in the comb teeth and are difficult to clean; the bolts are easy to loosen; the rubber water guide device needs to be replaced (the rubber strip is aging); the slot width is large, which has certain restrictions on the choice of bridge type. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes an integrally installed long-life comb-shaped telescopic device.
[0006] To achieve the above object, the utility model adopts the following technical solutions: An integrally installed long-life comb-shaped telescopic device, including a first bridge notch and a second bridge notch. A water guide plate is fixedly connected to the right side position at the top of the first bridge notch. A first comb plate is fixedly connected to the left side position at the top of the water guide plate. A first anchor plate is penetrated and fixedly connected to the middle position at the front end of the first bridge notch. A first concrete block is penetrated and arranged on the inner wall position of the first anchor plate. Uniformly distributed limiting holes are penetrated and arranged on the right side position at the top of the first bridge notch. A first threaded cylinder is slidably connected to the inner wall position of the limiting hole. First bolts are penetrated and slidably connected to the top positions of the first comb plates, and the first bolts are threadedly connected to the first threaded cylinder. A second comb plate is fixedly connected to the left side position at the top of the second bridge notch. Uniformly distributed first convex blocks are fixedly connected to the left side position at the bottom of the second comb plate. Uniformly distributed second convex blocks are fixedly connected to the middle left side position at the bottom of the second comb plate. A second anchor plate is penetrated and fixedly connected to the left side position at the front end of the second bridge notch. A second concrete block is fixedly connected to the inner wall position of the second anchor plate.
[0007] As a further description of the above technical solution:
[0008] Uniformly distributed welding blocks are penetrated and arranged on the left side position at the top of the first comb plate. Uniformly distributed third through holes are penetrated and arranged on the left side position at the top of the water guide plate.
[0009] As a further description of the above technical solution:
[0010] Uniformly distributed second through holes are penetrated and arranged on the top and bottom positions of the first anchor plate, and the second through holes are slidably connected to the first threaded cylinder. Uniformly distributed first through holes are penetrated and arranged on the top position of the first concrete block, and the first through holes are slidably connected to the first threaded cylinder.
[0011] As a further description of the above technical solution:
[0012] A first fixing plate is penetrated and fixedly connected to the middle top position on the right side of the first bridge notch, and the first fixing plate is slidably connected to the water guide plate.
[0013] As a further description of the above technical solution:
[0014] Uniformly distributed welding blocks are penetrated and arranged on the right side position at the top of the second comb plate. Uniformly distributed second nuts are penetrated and slidably connected to the top right side position of the second bridge notch.
[0015] As a further description of the above technical solution:
[0016] A second threaded cylinder penetrates and is slidably connected to the top right position of the second bridge notch. A second bolt is threadedly connected to the inner wall of the second threaded cylinder, and the second bolt is threadedly connected to a second nut.
[0017] As a further description of the above technical solution:
[0018] A uniformly distributed first rivet penetrates and is slidably connected to the left side position of the first comb tooth plate, and the first rivet is slidably connected to a third through hole. A uniformly distributed drip eaves penetrates and is provided at the top position of the first comb tooth plate.
[0019] As a further description of the above technical solution:
[0020] A second fixing plate penetrates and is fixedly connected to the top middle left position of the second bridge notch, and the second fixing plate is slidably connected to a water guide plate. A slope is fixedly connected to the right side position of the second fixing plate.
[0021] The utility model has the following beneficial effects:
[0022] 1. In the utility model, firstly, rainwater flows out of the bridge or enters the downspout through the drainage groove in the telescopic space through the first convex block and the second convex block on the second comb tooth plate and the water guide plate. Sediment gradually moves outward along the cross slope, and part of it will remain in the telescopic space, but it will not hinder the telescoping. The water guide plate is provided with drip eaves, and rainwater can only fall into the drainage groove and cannot enter the bridge expansion joint.
[0023] 2. In the utility model, by canceling the rubber strip that will age and replacing it with a drainage groove made of metal and cement concrete, it is not necessary to replace it during the entire service life of the bridge. Description of the Drawings
[0024] Figure 1 It is a sectional view of a long-life comb-shaped expansion device with integral installation proposed by the utility model;
[0025] Figure 2 It is a three-dimensional view of a long-life comb-shaped expansion device with integral installation proposed by the utility model;
[0026] Figure 3 It is a schematic view of the first bridge notch of a long-life comb-shaped expansion device with integral installation proposed by the utility model;
[0027] Figure 4 It is a schematic view of the second bridge control of a long-life comb-shaped expansion device with integral installation proposed by the utility model;
[0028] Figure 5 It is a sectional schematic view of a long-life comb-shaped expansion device with integral installation proposed by the utility model.
[0029] Legend Explanation:
[0030] 1. First bridge notch; 2. First anchor plate; 3. First concrete block; 4. First comb plate; 5. Water guide plate; 6. First nut; 7. Second comb plate; 8. First bump; 9. Second bump; 10. Second bridge notch; 11. First fixing plate; 12. Second fixing plate; 13. Second anchor plate; 14. Second concrete block; 15. Second nut; 16. Slope; 17. First threaded cylinder; 18. First bolt; 19. Second threaded cylinder; 20. Second bolt; 21. Welding block; 22. Limit hole; 23. First through hole; 24. Second through hole; 25. Drip eaves; 26. Third through hole. Detailed Implementation Manner
[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, 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 construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0033] Refer to Figures 1-5, an embodiment provided by the present utility model: an integrally installed long - life comb - shaped telescopic device, including a first bridge notch 1 and a second bridge notch 10. A water guide plate 5 is fixedly connected to the right - hand top position of the first bridge notch 1. A first comb - shaped plate 4 is fixedly connected to the left - hand top position of the water guide plate 5. A first anchor plate 2 is penetrated and fixedly connected to the middle front position of the first bridge notch 1. A first concrete block 3 is penetrated and arranged on the inner wall position of the first anchor plate 2. Uniformly distributed limit holes 22 are penetrated and arranged on the right - hand top position of the first bridge notch 1. A first threaded cylinder 17 is slidably connected to the inner wall position of the limit holes 22. First bolts 18 are penetrated and slidably connected to the top positions of the first comb - shaped plate 4 and the first bolts 18 are threadedly connected to the first threaded cylinder 17. A second comb - shaped plate 7 is fixedly connected to the left - hand top position of the second bridge notch 10. Uniformly distributed first bumps 8 are fixedly connected to the left - hand bottom position of the second comb - shaped plate 7. Uniformly distributed second bumps 9 are fixedly connected to the middle left - hand bottom position of the second comb - shaped plate 7. A second anchor plate 13 is penetrated and fixedly connected to the left - hand front position of the second bridge notch 10. A second concrete block 14 is fixedly connected to the inner wall position of the second anchor plate 13. Weld the first anchor plate 2 to the embedded steel bars of the first bridge notch 1, weld the second anchor plate 13 to the embedded steel bars of the second bridge notch 10, connect the first bolts 18 to the first threaded cylinder 17 and the second bolts 20 to the second threaded cylinder 19, then weld the assembled bolts and threaded cylinders to the anchor plates, then install the water guide plate on the first bridge notch 1, and then install the second comb - shaped plate 7 on the lower side of the longitudinal slope of the second bridge notch 10.
[0034] At the upper left position of the first comb tooth plate 4, evenly distributed welding blocks 21 are penetrated and arranged. At the upper left position of the water guide plate 5, evenly distributed third through holes 26 are penetrated and arranged. At both the upper and lower positions of the first anchor plate 2, evenly distributed second through holes 24 are penetrated and arranged, and the second through holes 24 are slidably connected with the first threaded cylinder 17. At the upper position of the first concrete block 3, evenly distributed first through holes 23 are penetrated and arranged, and the first through holes 23 are slidably connected with the first threaded cylinder 17. The second comb tooth plate 7 has a first convex block 8 and a second convex block 9, with a middle suspended part, and is connected in the bridge cross slope direction. Fine sediment can gradually be carried by the driving vehicles and rainwater along the cross slope to the side, and finally discharged outside the bridge, or enter the right side of the slope 16. Larger particles of sand and gravel remain in the comb teeth without affecting the expansion and contraction. Particles that are particularly large and affect driving safety need to be manually cleaned up.A first fixing plate 11 is penetrated and fixedly connected to the middle top position on the right side of the first bridge notch 1, and the first fixing plate 11 is slidably connected to the water guide plate 5. The notch width requirement of the present invention is the same as that of the modular type, so that the above two restrictions no longer exist and it can be applied to all bridge types. The present invention is applicable to expansion amounts of 0 - 80 mm, 0 - 160 mm, 0 - 240 mm, and even up to 1000 mm. When the bridge expands and contracts, the water guide plate 5 slides on the first fixing plate 11 and the second fixing plate 12, and the gap between the two is infinitely close to 0, or can be said to be 0. The second comb tooth plate 7 slides on the water guide plate 5, and the gap between the two is less than 1 mm. Uniformly distributed welding blocks 21 are penetrated and arranged at the top right position of the second comb tooth plate 7. Uniformly distributed second nuts 15 are penetrated and slidably connected to the top right position of the second bridge notch 10. Very fine sediment and part of the rainwater can enter the drainage groove in the expansion space from between the first convex block 8 and the second convex block 9 on the second comb tooth plate 7 and the water guide plate 8. The rainwater flows out of the bridge along the cross slope or enters the downspout. A second threaded cylinder 19 is penetrated and slidably connected to the top right position of the second bridge notch 10. A second bolt 20 is threadedly connected to the inner wall position of the second threaded cylinder 19, and the second bolt 20 is threadedly connected to the second nut 15. Uniformly distributed first nuts 6 are penetrated and slidably connected to the top left position of the first bridge notch 1, and the first nuts 6 are slidably connected to the limit holes 22. Uniformly distributed drip eaves 25 are penetrated and arranged at the top position of the first comb tooth plate 4. The sediment gradually moves outward along the cross slope, and part of it will remain in the expansion space, but it will not hinder the expansion and contraction. The water guide plate 8 is provided with drip eaves 25, so that the rainwater can only fall into the drainage groove and cannot enter the bridge expansion joint. A second fixing plate 12 is penetrated and fixedly connected to the middle top position on the left side of the second bridge notch 10, and the second fixing plate 12 is slidably connected to the water guide plate 5. A slope 16 is fixedly connected to the right side position of the second fixing plate 12. The present invention cancels the rubber strip that will age and replaces it with a drainage groove made of metal and cement concrete, which does not need to be replaced during the whole life cycle of the bridge. The whole expansion device is integrally installed, and the driving is smoother. The installation notch width of the ordinary comb tooth type is relatively large, which has certain restrictions on the selection of bridge types and also restricts that the comb tooth type cannot replace the modular type with the same expansion amount.
[0035] Working principle: When in use, weld the first anchor plate 2 to the embedded steel bars of the first bridge notch 1, weld the second anchor plate 13 to the embedded steel bars of the second bridge notch 10, connect the first bolt 18 to the first threaded cylinder 17 and the second bolt 20 to the second threaded cylinder 19, then weld the assembled bolts and threaded cylinders to the anchor plates. Then install the water guide plate on the first bridge notch 1, and install the second comb-shaped plate 7 on the lower side of the longitudinal slope of the second bridge notch 10. The second comb-shaped plate 7 has a first convex block 8 and a second convex block 9, with a middle suspension, and is connected in the bridge cross-slope direction. Fine sediment can gradually be carried by vehicles and rainwater along the cross-slope to the side and finally discharged outside the bridge, or enter the right side of the slope 16. Larger particles of sand and gravel remain in the comb teeth without affecting the expansion and contraction. Those that are particularly large and affect driving safety need to be manually cleaned. Very fine sediment and part of the rainwater can enter the drainage groove in the expansion and contraction space from between the first convex block 8 and the second convex block 9 on the second comb-shaped plate 7 and the water guide plate 8. The rainwater flows out of the bridge along the cross-slope or enters the downspout; the sediment gradually moves outward along the cross-slope, and part of it will remain in the expansion and contraction space but will not hinder the expansion and contraction. The water guide plate 8 is provided with a drip edge 25, and the rainwater can only fall into the drainage groove and cannot enter the bridge expansion joint. The rubber strip that will age in the present invention is cancelled and replaced with a drainage groove made of metal and cement concrete, which does not need to be replaced during the entire life cycle of the bridge. The entire expansion and contraction device is integrally installed, and the driving is smoother. The installation notch width of the ordinary comb-shaped type is relatively large, which has a certain restriction on the selection of the bridge type, and also restricts that the comb-shaped type cannot replace the modular type with the same expansion and contraction amount; the notch width requirement of the present invention is the same as that of the modular type, eliminating the above two restrictions and being applicable to all bridge types. The present invention is applicable to expansion and contraction amounts of 0 - 80 mm, 0 - 160 mm, 0 - 240 mm, and even up to 1000 or less. When the bridge expands and contracts, the water guide plate 5 slides on the first fixing plate 11 and the second fixing plate 12 (the gap between the two is infinitely close to 0, or can be said to be 0), and the second comb-shaped plate 7 slides on the water guide plate 5 (the gap between the two is less than 1 mm).
[0036] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An integrally mounted long-life comb-shaped telescopic device, comprising a first bridge slot (1) and a second bridge slot (10), characterized in that: A water guide plate (5) is fixedly connected to the top right position of the first bridge slot (1), a first comb plate (4) is fixedly connected to the top left position of the water guide plate (5), a first anchor plate (2) is passed through and fixedly connected to the middle position of the front end of the first bridge slot (1), a first concrete block (3) is passed through and arranged on the inner wall of the first anchor plate (2), evenly distributed limiting holes (22) are passed through and arranged on the top right position of the first bridge slot (1), a first threaded cylinder (17) is slidably connected to the inner wall of the limiting hole (22), and the top position of the first comb plate (4) is passed through A first bolt (18) is slidably connected and the first bolt (18) is threadedly connected to the first threaded tube (17); a second comb plate (7) is fixedly connected to the left position of the top of the second bridge slot (10); a first evenly distributed protrusion (8) is fixedly connected to the left position of the bottom of the second comb plate (7); a second evenly distributed second protrusion (9) is fixedly connected to the left position of the middle of the bottom of the second comb plate (7); a second anchor plate (13) is penetrated and fixedly connected to the left position of the front end of the second bridge slot (10); and a second concrete block (14) is fixedly connected to the inner wall of the second anchor plate (13).
2. The long-life comb-shaped telescopic device installed in one piece according to claim 1, characterized in that: A uniformly distributed welding block (21) is penetrated and arranged at the top left position of the first comb plate (4), and a uniformly distributed third through hole (26) is penetrated and arranged at the top left position of the water guide plate (5).
3. The long-life comb-shaped telescopic device installed in one piece according to claim 1, characterized in that: The top and bottom of the first anchor plate (2) are penetrated and provided with evenly distributed second through holes (24), and the second through holes (24) are slidably connected to the first threaded cylinder (17); the top of the first concrete block (3) is penetrated and provided with evenly distributed first through holes (23), and the first through holes (23) are slidably connected to the first threaded cylinder (17).
4. The long-life comb-shaped telescopic device installed in one piece according to claim 1, characterized in that: A first fixing plate (11) penetrates and is fixedly connected to the middle top position on the right side of the first bridge notch (1), and the first fixing plate (11) is slidably connected to the water guide plate (5).
5. The long-life comb-shaped telescopic device installed in one piece according to claim 1, characterized in that: A uniformly distributed welding block (21) is passed through and arranged on the top right side of the second comb plate (7), and a uniformly distributed second nut (15) is passed through and slidably connected on the top right side of the second bridge notch (10).
6. The long-life comb-shaped telescopic device installed in one piece according to claim 1, characterized in that: A second threaded barrel (19) penetrates and is slidably connected to the top right side of the second bridge notch (10), a second bolt (20) is threadedly connected to the inner wall of the second threaded barrel (19), and the second bolt (20) is threadedly connected to the second nut (15).
7. The long-life comb-shaped telescopic device installed in one piece according to claim 1, characterized in that: A first nut (6) that is evenly distributed is passed through and slidably connected to the left side of the top of the first bridge notch (1), and the first nut (6) is slidably connected to the limiting hole (22), and a drip eave (25) that is evenly distributed is passed through and provided at the top of the first comb plate (4).
8. The long-life comb-shaped telescopic device installed in one piece according to claim 1, characterized in that: A second fixing plate (12) penetrates and is fixedly connected to the middle top position on the left side of the second bridge notch (10), and the second fixing plate (12) is slidably connected to the water guide plate (5), and a slope (16) is fixedly connected to the right side of the second fixing plate (12).