Bolt-free pre-pressing type noise reduction multidirectional displacement bridge expansion joint

Abstract

The utility model relates to a bolt-free prepressing type noise reduction multidirectional displacement bridge expansion joint which comprises first toothed plates and second toothed plates, the first toothed plates and the second toothed plates are arranged in pairs in a matched mode, and the first toothed plates and the second toothed plates are laid on the two sides of the bridge expansion joint respectively. The telescopic teeth arranged in a staggered mode are arranged at the inner side edge ends of the first toothed plate and the second toothed plate, the telescopic teeth at the edge ends of the first toothed plate and the second toothed plate are connected in a matched mode, the same material is adopted for welding connection, and therefore the overall tensile strength and the anti-pulling strength of the expansion joint structure formed through welding are higher; a perforation type structure is adopted among the first toothed plate, the second toothed plate and the telescopic teeth, the left end face and the right end face are free of mechanical interference, vertical displacement can be effectively achieved, and through cooperation of a high-damping vibration reduction displacement support and a stainless steel concave plate at the bottoms of the crossed comb teeth, the connection tightness between the first toothed plate and the second toothed plate is ensured; the toothed plate can be effectively protected from deformation by means of actively reducing vibration and relieving impact force, and meanwhile driving noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joints, specifically a bolt-free pre-stressed noise-reducing multi-directional displacement bridge expansion joint. Background Art

[0002] Bridge expansion joints refer to expansion joints that are usually set between the two beam ends, between the beam ends and the abutments, or at the hinged positions of the bridge to meet the requirements of bridge deck deformation. The expansion joints are required to be able to freely expand and contract in both directions parallel and perpendicular to the bridge axis, and to be firm and reliable. Vehicles should pass smoothly without sudden jumps and noises. They should be able to prevent rainwater and garbage and soil from infiltrating and blocking. Installation, inspection, maintenance, and removal of dirt should be simple and convenient. At the expansion joints, the railings and the bridge deck pavement should be disconnected. The function of the bridge expansion joint is to adjust the displacement and connection between the superstructure caused by vehicle loads and bridge construction materials. Once the expansion device of the skew bridge is damaged, it will seriously affect the speed, comfort and safety of driving, and even cause driving safety accidents.

[0003] In actual application, the current expansion joints of bridges have uneven expansion and contraction on the left and right sides, which can easily lead to settlement, tearing and twisting deformation due to direct impact caused by lack of buffering when vehicles are driving. In addition, the expansion joints are installed with bolt connections. After long-term excessive fatigue use, the nuts are prone to loosening and disengagement, affecting the normal use of the expansion joints. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a bolt-free pre-stressed noise-reducing multi-directional displacement bridge expansion joint, which solves the problem that the current bridge expansion joint, due to its uneven left-right expansion and contraction in actual application, is easily subject to direct impact when a vehicle is driving due to lack of buffering, causing settlement, tearing and twisting deformation. In addition, the expansion joint is installed with bolt connections, and after long-term excessive fatigue use, the nuts are prone to loosening and disengaging and flying out, affecting the normal use of the expansion joint.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boltless pre-stressed noise-reducing multi-directional displacement bridge expansion joint, comprising a first tooth plate and a second tooth plate, the first tooth plate and the second tooth plate are arranged in pairs, and the first tooth plate and the second tooth plate are respectively paved on both sides of the bridge expansion joint, the inner side ends of the first tooth plate and the second tooth plate are provided with staggered telescopic teeth, and the telescopic teeth at the edge ends of the first tooth plate and the second tooth plate are matched and connected;

[0008] A support seat is provided at the bottom of the first tooth plate, a mounting seat is provided at the bottom of the second tooth plate, and a first anchoring support is connected to one end of the support seat, and a second anchoring support is connected to one end of the mounting seat. A displacement support is provided at the top of the mounting seat corresponding to the matching position of the telescopic teeth at the edge ends of the first tooth plate and the second tooth plate, and the bottom and top of the displacement support are pressed into the stainless steel concave plate, and the top of the stainless steel concave plate is arranged at the bottom of the cross comb teeth of the telescopic teeth, and its bottom is arranged at the top of the mounting seat;

[0009] The supporting seat and the mounting seat are fixedly connected to the inner support plates on the opposite side ends. The inner corners of the first anchor support and the second anchor support are horizontally interspersed with horizontal steel bars. Four horizontal steel bars are provided, and reserved steel bar hoops are sleeved on the outer sides of the horizontal steel bars.

[0010] As an optimal technical solution for a bolt-free pre-stressed noise-reducing multi-directional displacement bridge expansion joint of the utility model, the first tooth plate, the second tooth plate, the support seat and the mounting seat are all steel plates of the same material, and the support seat and the mounting seat are fixedly connected to the first tooth plate and the second tooth plate by welding.

[0011] As an optimal technical solution for a bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint of the utility model, the stainless steel concave plate is welded between the expansion tooth and the mounting seat, and the displacement support is limitedly connected between the two stainless steel concave plates, and the displacement support is formed by a combination of multiple high-damping vibration-reducing pads.

[0012] As an optimal technical solution for a boltless preloaded noise-reducing multi-directional displacement bridge expansion joint of the utility model, the horizontal steel bars and reserved steel bar hoops are both embedded in the concrete, the reserved steel bar hoops are square, and four horizontal steel bars are respectively placed at the four corners inside the reserved steel bar hoops.

[0013] As an optimal technical solution for a bolt-free pre-stressed noise-reducing multi-directional displacement bridge expansion joint of the utility model, the inner edge of the end of the inner support plate is detachably connected with a connecting end plate, and the connecting end plate is detachably connected to the edge of the inner support plate through a connecting bolt through a thread, a limiting groove is provided on the inner side of the end of the connecting end plate, and an intercepting cover is connected to the edge of the connecting end plate, a limiting block is provided at the edge of the intercepting cover corresponding to the limiting groove, and a discharge pipe is connected to the bottom of the intercepting cover.

[0014] As an optimal technical solution for a bolt-free pre-stressed noise-reducing multi-directional displacement bridge expansion joint of the utility model, the interception cover is connected by a fitting snap-fit ​​connection between the limit blocks on its two side ends and the limit grooves, and an interception plate is provided at the bottom of the two inner support plates on the inner side, and the two inner support plates, the interception plate, the connecting end plate and the interception cover together form an interception chamber.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint, which has the following beneficial effects:

[0017] 1. The first tooth plate, the second tooth plate, the support seat and the mounting seat are welded and connected with the same material, so that the overall tensile and anti-pull strength of the welded expansion joint structure is greater, and the overall welding in this way does not need to be connected by bolts, so that there is no longitudinal shearing phenomenon when the vehicle passes longitudinally, and the first tooth plate, the second tooth plate and the expansion tooth adopt a riding seam structure, and the left and right end surfaces have no mechanical interference, which can effectively realize vertical displacement, and the high damping vibration reduction displacement support and stainless steel concave plate at the bottom of the cross comb teeth can effectively protect the tooth plate from deformation by actively reducing the impact force while ensuring the tightness of the connection between them, and reduce the driving noise at the same time;

[0018] In addition, the first tooth plate, the second tooth plate and the telescopic tooth are supported by the first anchor support, the second anchor support, the support seat and the mounting seat, and the first anchor support, the second anchor support, the horizontal steel bars and the reserved steel bar hoops are all poured in concrete, and the pre-stressed integral welding forming method is adopted to realize the assembly of the entire expansion joint structure, so that only one-time welding and one-time integral pouring of concrete are required at the installation site, thereby making the expansion joint structure more convenient and quick during installation and laying.

[0019] 2. An inner support plate is arranged on the inner side of the support seat and the mounting seat, and an interception chamber is formed in cooperation with the interception plate at the bottom thereof, the connecting end plate and the interception cover, so that dirt and impurities infiltrated from the telescopic teeth can be intercepted and collected. The dirt and impurities are discharged through the discharge pipe in cooperation with the flushing of rainwater, thereby realizing automatic cleaning of dirt and impurities, and preventing dirt and impurities from accumulating at the bottom of the telescopic teeth, which causes the telescopic teeth to warp when in use. At the same time, the connecting end plate can be conveniently installed by using the connecting bolt, so that the corners can be disassembled and assembled, and the limiting connection between the limiting block and the limiting groove can be conveniently connected and limited to the interception cover and the connecting end plate, thereby making it more convenient for people to disassemble and clean the interception cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is the front view of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the inner supporting plate of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the telescopic teeth of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the displacement support of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the interception cover of the utility model.

[0026] In the figure: 1. first tooth plate; 2. second tooth plate; 3. telescopic teeth; 4. first anchor support; 5. second anchor support; 6. support seat; 7. mounting seat; 8. displacement support; 9. stainless steel concave plate; 10. inner support plate; 11. horizontal steel bars; 12. reserved steel bar hoop; 13. connecting end plate; 14. connecting bolt; 15. limiting groove; 16. intercepting cover; 17. limiting block; 18. discharge pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0028] See also Figure 1-6 The utility model provides the following technical solutions: a bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint, comprising a first tooth plate 1 and a second tooth plate 2, the first tooth plate 1 and the second tooth plate 2 are arranged in pairs, and the first tooth plate 1 and the second tooth plate 2 are respectively paved on both sides of the bridge expansion joint, the inner side ends of the first tooth plate 1 and the second tooth plate 2 are provided with staggered expansion teeth 3, and the expansion teeth 3 at the ends of the first tooth plate 1 and the second tooth plate 2 are matched and connected;

[0029] A support seat 6 is provided at the bottom of the first tooth plate 1, and a mounting seat 7 is provided at the bottom of the second tooth plate 2. The first tooth plate 1, the second tooth plate 2, the support seat 6 and the mounting seat 7 are all steel plates of the same material, and the support seat 6 and the mounting seat 7 are fixedly connected to the first tooth plate 1 and the second tooth plate 2 by welding. The same material is used for welding connection, so that the overall tensile and pull-out strength of the welded expansion joint structure is greater, and one side end of the support seat 6 is connected to the first anchor support 4, and one side end of the mounting seat 7 is connected to the second anchor support 5. The top of the mounting seat 7 is provided with a displacement support 8 corresponding to the matching position of the telescopic teeth 3 at the edge ends of the first tooth plate 1 and the second tooth plate 2, and the bottom and top of the displacement support 8 They are all pressed into the stainless steel concave plate 9, and the top of the stainless steel concave plate 9 is arranged at the bottom of the cross comb teeth of the telescopic teeth 3, and the bottom is arranged at the top of the mounting seat 7. The stainless steel concave plate 9 is welded between the telescopic teeth 3 and the mounting seat 7, and the displacement support 8 is limitedly connected between the two stainless steel concave plates 9. The displacement support 8 is formed by a combination of multiple high-damping vibration-damping pads, so that there is no longitudinal shearing phenomenon when the vehicle passes longitudinally. The use of the riding seam structure can effectively realize vertical displacement without mechanical interference on the left and right end surfaces. The displacement support 8 and the stainless steel concave plate 9 with high damping vibration reduction at the bottom of the cross comb teeth can effectively protect the tooth plate from deformation by actively reducing vibration and alleviating impact force while ensuring the tightness of the connection between them;

[0030] The supporting seat 6 and the mounting seat 7 are fixedly connected to the inner support plate 10 on the opposite side ends. Horizontal steel bars 11 are horizontally inserted in the horizontal direction at the inner corners of the first anchor support 4 and the second anchor support 5. Four horizontal steel bars 11 are provided, and the outer side of the horizontal steel bars 11 is sleeved with a reserved steel bar hoop 12. The horizontal steel bars 11 and the reserved steel bar hoop 12 are embedded in the concrete. The reserved steel bar hoop 12 is square, and the four horizontal steel bars 11 are respectively placed at the four corners on the inner side of the reserved steel bar hoop 12. The assembly of the entire expansion joint structure is achieved by pre-stressing the overall welding method, so that only one-time welding and one-time overall pouring of concrete are required at the installation site, thereby making the expansion joint structure more convenient and quick during installation and laying.

[0031] The inner side edge of the end of the inner support plate 10 is detachably connected with a connecting end plate 13, and the connecting end plate 13 is detachably connected to the edge of the inner support plate 10 through a connecting bolt 14, and a limiting groove 15 is provided on the inner side of the end of the connecting end plate 13, and the edge of the connecting end plate 13 is limitedly connected with an interception cover 16, and a limiting block 17 is provided at the edge of the interception cover 16 corresponding to the limiting groove 15, and a discharge pipe 18 is connected to the bottom of the interception cover 16, and the interception cover 16 is connected to the limiting groove through the limiting blocks 17 on both sides of the edge. 15 are fitted and snap-connected, and an interception plate is arranged at the bottom of the two inner support plates 10 located on the inner side, and the two inner support plates 10, the interception plate, the connecting end plate 13 and the interception cover 16 are together surrounded to form an interception chamber, which is convenient for intercepting and collecting dirt and impurities that penetrate from the telescopic teeth 3, and the dirt and impurities are discharged through the discharge pipe 18 with the help of rainwater, thereby realizing automatic cleaning of dirt and impurities, and preventing dirt and impurities from accumulating at the bottom of the telescopic teeth 3, which causes the telescopic teeth 3 to warp when in use.

[0032] The working principle and use process of the utility model are as follows: first, the reserved steel bar hoop 12 is cast and fixed by concrete, and the horizontal steel bar 11 is inserted into the reserved steel bar hoop 12 in the horizontal direction, and then the first anchor support 4 and the second anchor support 5 are cast and fixed, and the casting positions of the first anchor support 4 and the second anchor support 5 are respectively located at the ends of the expansion joint positions of the bridge at both ends;

[0033] The first tooth plate 1, the second tooth plate 2 and the telescopic tooth 3 are supported by the first anchor support 4, the second anchor support 5, the support seat 6 and the mounting seat 7, and the first anchor support 4, the second anchor support 5, the horizontal steel bar 11 and the reserved steel bar hoop 12 are all cast in concrete, and the whole expansion joint structure is assembled by pre-pressing integral welding and forming, so that only one-time welding and one-time integral pouring of concrete are required at the installation site, so that the expansion joint structure is more convenient and quicker to install and lay;

[0034] During the driving process of the vehicle, the first tooth plate 1, the second tooth plate 2 and the support seat 6 and the mounting seat 7 are welded and connected with the same material, so that the overall tensile and anti-pull strength of the expansion joint structure formed by welding is greater, and this method is welded as a whole without the need for bolt connection, so that there is no longitudinal shearing phenomenon when the vehicle passes longitudinally, and the first tooth plate 1, the second tooth plate 2 and the telescopic tooth 3 adopt a riding seam structure, and the left and right end surfaces have no mechanical interference, which can effectively realize vertical displacement, and the displacement support 8 and the stainless steel concave plate 9 with high damping and vibration reduction at the bottom of the cross comb teeth can effectively protect the tooth plate from deformation by actively reducing vibration and alleviating impact force, while reducing driving noise;

[0035] In addition, after the dirt and impurities on the bridge road surface enter the bottom of the telescopic teeth 3, an inner support plate 10 is arranged on the inner side of the support seat 6 and the mounting seat 7, and the interception plate at the bottom thereof, the connecting end plate 13 and the interception cover 16 form an interception chamber, so that the dirt and impurities infiltrated from the telescopic teeth 3 can be intercepted and collected, and the dirt and impurities are discharged through the discharge pipe 18 in cooperation with the flushing of rainwater, so that the dirt and impurities are automatically cleaned, and the dirt and impurities are prevented from accumulating at the bottom of the telescopic teeth 3, so that the telescopic teeth 3 may warp when in use;

[0036] In addition, the connecting bolt 14 is used to facilitate the installation of the connecting end plate 13 so that the corners can be disassembled and assembled, and the limiting connection between the limiting block 17 and the limiting groove 15 is used to facilitate the clamping and limiting of the intercepting cover 16 and the connecting end plate 13, thereby making it more convenient for people to disassemble and clean the intercepting cover 16.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A boltless preloaded noise-reducing multi-directional displacement bridge expansion joint, comprising a first tooth plate (1) and a second tooth plate (2), characterized in that: The first tooth plate (1) and the second tooth plate (2) are arranged in pairs, and the first tooth plate (1) and the second tooth plate (2) are respectively paved on both sides of the expansion joint of the bridge, and the inner side ends of the first tooth plate (1) and the second tooth plate (2) are provided with staggered expansion teeth (3), and the expansion teeth (3) at the side ends of the first tooth plate (1) and the second tooth plate (2) are matched and connected; A support seat (6) is provided at the bottom of the first tooth plate (1), a mounting seat (7) is provided at the bottom of the second tooth plate (2), and one side end of the support seat (6) is connected to a first anchoring support (4), and one side end of the mounting seat (7) is connected to a second anchoring support (5), and a displacement support (8) is provided at the top of the mounting seat (7) at a matching position corresponding to the telescopic teeth (3) at the edge ends of the first tooth plate (1) and the second tooth plate (2), and the bottom and top of the displacement support (8) are both pressed into the stainless steel concave plate (9), and the top of the stainless steel concave plate (9) is arranged at the bottom of the cross comb teeth of the telescopic teeth (3), and its bottom is arranged at the top of the mounting seat (7); The supporting seat (6) and the mounting seat (7) are fixedly connected to inner support plates (10) at opposite side ends, and horizontal steel bars (11) are horizontally inserted in the horizontal direction at both inner side corners of the first anchoring seat (4) and the second anchoring seat (5), four horizontal steel bars (11) are provided, and reserved steel bar hoops (12) are sleeved on the outer sides of the horizontal steel bars (11).

2. According to claim 1, a bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint is characterized in that: The first tooth plate (1), the second tooth plate (2), the support seat (6) and the mounting seat (7) are all steel plates made of the same material, and the support seat (6) and the mounting seat (7) are fixedly connected to the first tooth plate (1) and the second tooth plate (2) by welding.

3. The bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint according to claim 1 is characterized in that: The stainless steel concave plate (9) is welded between the telescopic tooth (3) and the mounting seat (7), and the displacement support (8) is limitedly connected between the two stainless steel concave plates (9), and the displacement support (8) is formed by combining a plurality of high-damping vibration-reducing pads.

4. The bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint according to claim 1 is characterized in that: The horizontal steel bars (11) and the reserved steel bar hoop (12) are both embedded in concrete; the reserved steel bar hoop (12) is square, and four horizontal steel bars (11) are respectively placed at four corners inside the reserved steel bar hoop (12).

5. The bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint according to claim 1 is characterized in that: The inner side edge of the end of the inner support plate (10) is detachably connected to a connecting end plate (13), and the connecting end plate (13) is detachably connected to the edge of the inner support plate (10) through a connecting bolt (14) through a thread, a limiting groove (15) is provided on the inner side of the end of the connecting end plate (13), and an interception cover (16) is limitedly connected to the edge of the connecting end plate (13), a limiting block (17) is provided at the edge of the interception cover (16) corresponding to the limiting groove (15), and a discharge pipe (18) is connected to the bottom of the interception cover (16).

6. The bolt-free preloaded noise-reducing multi-directional displacement bridge expansion joint according to claim 5 is characterized by: The interception cover (16) is connected by a fit and snap connection between the limit blocks (17) at the two side ends thereof and the limit grooves (15); an interception plate is provided at the bottom of the two inner support plates (10) located on the inner side; and the two inner support plates (10), the interception plate, the connecting end plate (13) and the interception cover (16) are together surrounded to form an interception chamber.

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