A multi-directional displacement bridge expansion joint device

Abstract

The present application relates to the technical field of bridge expansion joints, and discloses a multi-directional displacement bridge expansion joint device, comprising two fixed plates installed and fixed between the bridge expansion joints. The present application has the following advantages and effects: it can realize the multi-directional displacement function, and the fixed comb teeth and the columnar comb teeth can always maintain a relatively flush state during the multi-directional displacement process of the bridge expansion joint, which can effectively reduce the bumps and vibrations of the vehicle and the noise generated, effectively prevent traffic accidents such as tire blowouts and rollovers, and effectively solve the problem of fatigue fracture of some comb teeth roots caused by stress concentration. Moreover, under the action of the rotating driving force of the wheel, the columnar comb teeth can be driven to rotate, and the airflow generated when the vehicle passes will promptly discharge the dust, sand and gravel and other dirt that falls between the fixed comb teeth and the columnar comb teeth, achieving a self-cleaning effect, thereby extending the service life of the expansion joint device as a whole, and providing a smoother, quieter and safer passage environment for passing vehicles.

Description

Technical Field

[0001] The present application relates to the technical field of bridge expansion joints, and in particular to a multi-directional displacement bridge expansion joint device. Background Art

[0002] Expansion joints are a crucial component in bridge engineering. As a key component connecting bridge structural components, they fulfill the crucial function of adapting to the expansion, displacement, and deformation of bridges caused by factors such as temperature fluctuations, vehicle loads, and wind.

[0003] In the prior art, most conventional bridge expansion joint devices are comb-tooth type. Although the comb-tooth type expansion joint device can meet the basic requirements of multi-directional expansion and contraction deformation of bridges in the longitudinal direction (along the length of the bridge), transverse direction (along the width of the bridge) and vertical direction (perpendicular to the bridge deck), it is found in actual use that there are still at least the following deficiencies: First, during the multi-directional displacement of the bridge expansion joint, the two rows of comb teeth on the comb-tooth type expansion joint device cannot always maintain a relatively flush state, which easily causes a certain height difference between the two rows of comb teeth and misalignment. In particular, when the bridge undergoes vertical displacement, the height difference between the two rows of comb teeth is even greater. When a vehicle passes through the misaligned comb teeth, on the one hand, the vehicle is affected The bumps and vibrations will increase, and the noise generated by the collision between the wheel and the comb teeth will also increase, reducing driving comfort. On the one hand, it is easy for the wheel to get stuck in the comb teeth gap or the impact load received by the wheel colliding with the comb teeth will increase suddenly, causing traffic accidents such as tire blowout and rollover, which poses a safety hazard. On the other hand, the pressure applied by the vehicle to the comb-tooth expansion joint device is not balanced enough, which can easily cause the local stress of the comb teeth to be misaligned. If this continues for a long time, it is easy to accelerate the fatigue fracture of some comb teeth roots, resulting in a shortened service life of the expansion joint device; secondly, dust, sand and gravel and other dirt are easily accumulated in the comb teeth gap. The accumulation of more and more dirt will affect the normal displacement function of the expansion joint, thereby further shortening the service life of the expansion joint device.

[0004] Therefore, we propose a multi-directional displacement bridge expansion joint device to solve the above problems. Summary of the Invention

[0005] The purpose of the present application is to provide a multi-directional displacement bridge expansion joint device, which can simultaneously meet the needs of the bridge in the longitudinal, transverse and vertical deformation, realize the multi-directional displacement function, and the fixed comb teeth and the columnar comb teeth can always maintain a relatively flush state during the multi-directional displacement of the bridge expansion joint, which can effectively reduce the vehicle's bumps and vibrations and the noise generated, effectively prevent traffic accidents such as tire blowouts and rollovers, and effectively solve the problem of fatigue fracture of some comb teeth roots caused by stress concentration, and can discharge dust, sand and gravel and other dirt that falls between the fixed comb teeth and the columnar comb teeth in time, realize the self-cleaning function, thereby extending the overall service life of the expansion joint device and providing a smoother, quieter and safer traffic environment for passing vehicles.

[0006] The above-mentioned technical objectives of the present application are achieved through the following technical solutions: a multi-directional displacement bridge expansion joint device, comprising two fixed plates installed and fixed between the bridge expansion joints, a fixed comb plate and a movable comb plate respectively provided on the side of the two fixed plates close to each other, the fixed comb plate comprising a rectangular comb plate beam and a plurality of fixed comb teeth, the rectangular comb plate beam is fixedly connected to one side of one of the fixed plates, the plurality of fixed comb teeth are fixedly installed on one side of the rectangular comb plate beam and are distributed at equal intervals, a slot is provided at the bottom of the fixed comb teeth, and avoidance grooves with open bottom structures are provided on the left and right sides of the fixed comb teeth, the two avoidance grooves are connected to the slots, the movable comb plate comprises an L-shaped comb plate beam, a plurality of displacement bearing frames and a movable comb tooth assembly, the L-shaped comb plate beam is fixedly connected to one side of the other fixed plate, a plurality of mounting holes distributed at equal intervals are provided at the bottom of the L-shaped comb plate beam, the bottoms of the plurality of displacement bearing frames are respectively arranged in the corresponding mounting holes, and the movable comb tooth assembly is located on the top of the plurality of displacement bearing frames.

[0007] The present application is further configured as follows: the movable comb tooth assembly includes multiple transverse shafts, multiple cranks and multiple columnar comb teeth, the multiple transverse shafts are respectively arranged on the top of the corresponding displacement carriers, the multiple transverse shafts are respectively movably inserted into the corresponding slots, the top of the transverse shaft is in conflict with the top inner wall of the slot, the two ends of the transverse shaft respectively pass through the corresponding avoidance grooves, the crank is fixedly installed between two adjacent transverse shafts, and the crank is located between two adjacent fixed comb teeth, the multiple columnar comb teeth are respectively rotatably installed on the corresponding cranks, and the top surfaces of the rectangular comb plate beam, the multiple fixed comb teeth, the L-shaped comb plate beam, the multiple columnar comb teeth and the two fixed plates are arranged flush.

[0008] The present application is further configured as follows: a plurality of fixed comb teeth are integrally cast with the rectangular comb plate beam, the inner width of the avoidance groove is greater than the width of the crank, and the height of the avoidance groove is greater than the height of the crank.

[0009] The present application is further configured as follows: the outer surface of the columnar comb teeth is provided with anti-slip grooves.

[0010] The present application is further configured as follows: the displacement carrier includes two transverse guide shafts, two slides, a connecting shaft, a support column, a telescopic rod, a support plate, a spring one, two spring twos and four spring threes. The two transverse guide shafts are fixedly installed in the mounting holes, the two slides are slidably sleeved on the corresponding transverse guide shafts, the two ends of the connecting shaft are fixedly connected to the side of the two slides close to each other, the support column is slidably sleeved on the connecting shaft, the top of the support column extends into the corresponding slot, the top of the support column is provided with a vertical slot, the bottom end of the telescopic rod is slidably installed in the vertical slot, and the support plate is fixedly installed The top of the telescopic rod and the horizontal axis are fixedly installed on the top of the support plate, the spring one is fixedly installed on the top of the supporting column, the top of the spring one is fixedly connected to the bottom of the support plate, a set of springs is provided on the telescopic rod, the two springs two are respectively fixedly installed on the front and rear outer walls of the supporting column, the ends of the two springs two away from each other are respectively fixedly connected to the corresponding slides, the two springs two are both sleeved on the connecting shaft, the four springs three are respectively fixedly installed on the left and right side walls of the two slides, the end of the spring three away from the slide is fixedly connected to the inner wall of one side of the mounting hole, and the spring three sleeves are provided on the corresponding horizontal guide shaft.

[0011] The present application is further configured as follows: grooves are provided on the sides of the two fixed plates that are close to each other, and a rubber waterstop is provided between the two fixed plates and located below the L-shaped comb beam, and the two side edges of the rubber waterstop are detachably installed and fixed in the corresponding grooves.

[0012] The present application is further configured as follows: a plurality of triangular reinforcement blocks distributed at equal intervals are fixedly installed on the bottom of the L-shaped comb beam, and the plurality of triangular reinforcement blocks are all fixedly connected to the same fixed plate.

[0013] The present application is further configured as follows: anchor bolts are fixedly installed on the sides of the two fixing plates that are away from each other, and the number of the anchor bolts is set to be multiple, and the multiple anchor bolts are distributed in an array.

[0014] The present application is further configured as follows: a polymer elastic filling strip is fixedly installed on the side wall of the L-shaped comb plate beam close to the fixed comb teeth, and the side of the fixed comb teeth away from the rectangular comb plate beam is fixedly connected to the polymer elastic filling strip, and the top surface of the polymer elastic filling strip is flush with the top surface of the fixed comb teeth.

[0015] The present application is further configured as follows: a plurality of evenly distributed cavities are provided in the polymer elastic filling strip.

[0016] This application includes at least one of the following beneficial technical effects:

[0017] The present invention, with the coordinated action of multiple displacement bearing frames and movable comb tooth assemblies, can simultaneously meet the requirements of the bridge for longitudinal, transverse, and vertical deformation, achieving a multi-directional displacement function. Compared with traditional expansion joint devices, it effectively solves the problem of insufficient adaptability of bridge deformation under complex working conditions, and enhances the service life of the bridge and the expansion joint device as a whole. Moreover, the fixed comb teeth and the columnar comb teeth can always remain relatively flush during the multi-directional displacement of the bridge expansion joint, which can effectively avoid vehicle bumps and vibrations caused by uneven comb teeth and reduce the noise generated by the collision between the wheels and the comb teeth. On the one hand, it can prevent traffic accidents such as tire blowouts and rollovers caused by wheels getting stuck in the comb tooth gaps or sudden increases in wheel impact loads when vehicles pass through. It can also ensure that the fixed comb plates and the movable comb plates can evenly bear the pressure of the vehicle, effectively eliminating the phenomenon of excessive local stress caused by comb tooth misalignment, and effectively solving the problem of fatigue fracture at the roots of some comb teeth caused by stress concentration caused by comb tooth misalignment, thereby extending the service life of the expansion joint device as a whole, providing a smoother, quieter, and safer passage environment for passing vehicles, and significantly improving the driving experience.

[0018] The present application designs columnar comb teeth, and sets anti-skid grooves on the outer surface of the columnar comb teeth. When the vehicle passes through the fixed comb plate and the movable comb plate, the cylindrical comb teeth can be pushed to effectively rotate on the crank under the action of the wheel rotation driving force. During the rotation of the cylindrical comb teeth, the airflow generated when the vehicle passes will discharge the dust, sand and gravel and other dirt that falls between the fixed comb teeth and the columnar comb teeth in time, achieving a certain self-cleaning effect, preventing the accumulation of more and more dirt and affecting the normal displacement function of the expansion joint device, and further extending the overall service life of the expansion joint device.

[0019] The present application designs a polymer elastic filling strip, and sets a plurality of evenly distributed cavities inside the polymer elastic filling strip. When a vehicle passes through the fixed comb plate and the movable comb plate, it can further reduce the noise and bumps generated by the wheels and the fixed comb plate and the movable comb plate when the vehicle passes, and reduce the vibration generated by the wheels and the fixed comb plate and the movable comb plate, so that the vehicle can pass more smoothly and comfortably. At the same time, it can also effectively buffer the impact of vehicle load, reduce the direct force of the load on the expansion joint device, protect the components of the expansion joint device, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure from a first perspective of the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure from a second perspective of the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0022] Figure 3This is a schematic diagram of the three-dimensional structure of the fixed comb plate in the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the movable comb plate in the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the movable comb assembly in the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the displacement bearing frame in the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0026] Figure 7 This is a schematic diagram of the main cross-sectional structure of the displacement bearing frame in the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0027] Figure 8 This is a three-dimensional assembly diagram of the displacement bearing frame and the movable comb assembly in the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0028] Figure 9 This is a schematic diagram of a partially cutaway perspective structure of the first embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0029] Figure 10 This is a schematic diagram of the three-dimensional structure of the second embodiment of the multi-directional displacement bridge expansion joint device provided by the present application;

[0030] Figure 11 It is a schematic diagram of the sectional three-dimensional structure of the polymer elastic filling strip in the second embodiment of the multi-directional displacement bridge expansion joint device provided by the present application.

[0031] In the figure, 1, fixed plate; 2, fixed comb plate; 3, movable comb plate; 4, rubber water stop; 5, triangular reinforcement block; 6, anchor bolt; 7, polymer elastic filling strip; 701, cavity;

[0032] 201, rectangular comb plate beam; 202, fixed comb teeth; 203, slot; 204, avoidance groove;

[0033] 301, L-shaped comb plate beam; 302, mounting hole; 303, displacement bearing frame; 304, movable comb tooth assembly;

[0034] 3031, horizontal guide shaft; 3032, slide; 3033, connecting shaft; 3034, supporting column; 3035, vertical slot; 3036, telescopic rod; 3037, support plate; 3038, spring 1; 3039, spring 2; 30310, spring 3;

[0035] 3041. Horizontal axis; 3042. Curved bend; 3043. Columnar comb teeth. DETAILED DESCRIPTION

[0036] The technical solutions of this application will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of this application without creative effort are also within the scope of protection of this application. Example 1

[0037] See also Figures 1-9In a first embodiment of the present application, a multi-directional displacement bridge expansion joint device includes: two fixed plates 1 installed and fixed between the bridge expansion joints, a fixed comb plate 2 and a movable comb plate 3 are respectively provided on one side of the two fixed plates 1 close to each other, the fixed comb plate 2 includes a rectangular comb plate beam 201 and a plurality of fixed comb teeth 202, the rectangular comb plate beam 201 is fixedly connected to one side of one of the fixed plates 1, a plurality of fixed comb teeth 202 are all fixedly installed on one side of the rectangular comb plate beam 201 and are distributed at equal intervals, a plurality of fixed comb teeth 202 are all integrally cast with the rectangular comb plate beam 201, a slot 203 is provided at the bottom of the fixed comb tooth 202, and an avoidance groove 204 with an open bottom structure is provided on the left and right sides of the fixed comb tooth 202, and the two avoidance grooves 204 are both connected to the slot The slots 203 are connected, and the movable comb plate 3 includes an L-shaped comb plate beam 301, a plurality of displacement carriers 303 and a movable comb tooth assembly 304. The L-shaped comb plate beam 301 is fixedly connected to one side of another fixed plate 1. The bottom of the L-shaped comb plate beam 301 is provided with a plurality of mounting holes 302 distributed at equal intervals. The bottoms of the plurality of displacement carriers 303 are respectively arranged in the corresponding mounting holes 302. The movable comb tooth assembly 304 is located at the top of the plurality of displacement carriers 303. The movable comb tooth assembly 304 includes a plurality of transverse shafts 3041, a plurality of cranks 3042 and a plurality of columnar comb teeth 3043. The plurality of transverse shafts 3041 are respectively arranged at the top of the corresponding displacement carriers 303. The plurality of transverse shafts 3041 are respectively movably inserted in the corresponding slots 203. The top of the comb plate 41 conflicts with the top inner wall of the slot 203, and the two ends of the horizontal axis 3041 respectively pass through the corresponding avoidance groove 204, the crank 3042 is fixedly installed between the two adjacent horizontal axes 3041, and the crank 3042 is located between the two adjacent fixed comb teeth 202, and a plurality of columnar comb teeth 3043 are rotatably installed on the corresponding crank 3042. The design of the columnar comb teeth 3043 is that when a vehicle traveling on the bridge passes through the fixed comb plate 2 and the movable comb plate 3, the friction between the wheel and the columnar comb teeth 3043 is utilized. Under the rotational driving force of the wheel, the columnar comb teeth 3043 can be pushed to rotate on the crank 3042, so that during the rotation process of the columnar comb teeth 3043, and in conjunction with the airflow generated when the vehicle passes, the fixed comb teeth 3043 can be effectively prevented from being stuck. Dust, sand and gravel and other dirt accumulate between the fixed comb teeth 202 and the columnar comb teeth 3043, effectively preventing dirt accumulation and clogging, achieving a certain self-cleaning effect, ensuring the normal displacement function of the bridge expansion joint, reducing the bridge safety risk caused by the failure of the expansion joint device, and ensuring the stable and reliable use of the multi-directional displacement bridge expansion joint device. The displacement bearing frame 303 includes two transverse guide shafts 3031, two slides 3032, a connecting shaft 3033, a supporting column 3034, a telescopic rod 3036, a supporting plate 3037, a spring 1 3038, two springs 2 3039 and four springs 30310. The two transverse guide shafts 3031 are fixedly installed in the mounting hole 302, and the two slides 3032 are slidably sleeved on the corresponding transverse guide shafts 3031 respectively.The two ends of the connecting shaft 3033 are respectively fixedly connected to the side of the two slides 3032 close to each other, the supporting column 3034 is slidably sleeved on the connecting shaft 3033, the top of the supporting column 3034 extends to the corresponding slot 203, the top of the supporting column 3034 is provided with a vertical slot 3035, the bottom end of the telescopic rod 3036 is slidably installed in the vertical slot 3035, the supporting plate 3037 is fixedly installed on the top of the telescopic rod 3036, the horizontal axis 3041 is fixedly installed on the top of the supporting plate 3037, the spring 1 3038 is fixedly installed on the top of the supporting column 3034, the top of the spring 1 3038 is fixedly connected to the bottom of the supporting plate 3037, the spring 1 3038 is sleeved on the telescopic rod 3036, and the two springs 2 3039 are respectively fixed The two springs 3039 are mounted on the outer walls of the front and rear sides of the support column 3034. The ends of the two springs 2 3039 that are away from each other are fixedly connected to the corresponding slides 3032. The two springs 2 3039 are both sleeved on the connecting shaft 3033. The four springs 30310 are respectively fixedly mounted on the left and right side walls of the two slides 3032. The end of the spring 3 30310 that is away from the slide 3032 is fixedly connected to the inner wall of one side of the mounting hole 302. The spring 3 30310 is sleeved on the corresponding transverse guide shaft 3031. It should be noted that the spring 1 3038 is in a compressed but not fully compressed state. The spring 2 3039 and the spring 3 are both in a naturally extended state without stress. By utilizing the sliding connection between the transverse guide shaft 3031 and the slide 3032 , it is possible for the support column 3034 to drive the horizontal axis 3041, the crank 3042 and the columnar comb teeth 3043 at its top to move in the transverse direction of the bridge (i.e., move in the direction of the bridge width), thereby being able to adapt to the transverse displacement of the bridge, and the spring three 30310 is used to provide a transverse restoring force in the bridge direction; by utilizing the sliding connection of the connecting shaft 3033 and the support column 3034, it is possible for the support column 3034 to drive the horizontal axis 3041, the crank 3042 and the columnar comb teeth 3043 at its top to move in the direction of the bridge (i.e., move in the direction of the bridge length), thereby being able to adapt to the displacement of the bridge in the direction of the bridge, and the spring two 3039 is used to provide a restoring force in the direction of the bridge; by utilizing the sliding connection of the telescopic rod 3036 and the vertical slot 3035, the telescopic rod 3036 can be used to move in the direction of the bridge The retracted rod 3036 drives the horizontal axis 3041, the crank 3042 and the columnar comb teeth 3043 at its top to move vertically (i.e., move in the direction perpendicular to the bridge deck), thereby being able to adapt to the vertical displacement of the bridge. The spring 1 3038 is used to provide a vertical reset force, thereby being able to simultaneously meet the needs of the bridge to deform in the longitudinal, transverse and vertical directions, and realize the function of multi-directional displacement. Compared with the traditional expansion joint device, it can effectively solve the problem of insufficient adaptability of bridge deformation under complex working conditions, and enhance the service life of the bridge and the expansion joint device as a whole. In addition, the fixed comb teeth 202 and the columnar comb teeth 3043 can always maintain a relatively flush state during the multi-directional displacement process of the bridge expansion joint. On the one hand, it effectively avoids the bumps and vibrations of the vehicle caused by the unevenness of the comb teeth.Reducing the noise generated by the collision between the wheel and the comb teeth, on the one hand, can prevent traffic accidents such as tire blowouts and rollovers caused by wheels getting stuck in the comb teeth gap or a sudden increase in wheel impact load when a vehicle passes. On the other hand, it ensures that the fixed comb plate 2 and the movable comb plate 3 can evenly bear the pressure of the vehicle, effectively eliminating the phenomenon of excessive local stress caused by comb tooth misalignment. It effectively solves the problem of stress concentration caused by comb tooth misalignment and fatigue fracture at the roots of some comb teeth, extending the service life of the entire expansion joint device, thereby providing a smoother, quieter and safer passage environment for passing vehicles and significantly improving the driving experience.

[0038] In this embodiment, the rectangular comb plate beam 201, multiple fixed comb teeth 202, L-shaped comb plate beam 301, multiple columnar comb teeth 3043 and the top surfaces of the two fixed plates 1 are arranged flush, ensuring the stability of the vehicle when passing and having a noise reduction effect.

[0039] In this embodiment, the inner width of the avoidance groove 204 is greater than the width of the crank 3042, and the height of the avoidance groove 204 is greater than the height of the crank 3042. When the bridge undergoes transverse displacement, it can ensure that one side of the crank 3042 can smoothly enter the avoidance groove 204, so that the crank 3042 will not conflict with or squeeze the fixed comb teeth 202.

[0040] In this embodiment, the outer surface of the columnar comb teeth 3043 is provided with anti-skid grooves. When a vehicle traveling on the bridge passes through the fixed comb plate 2 and the movable comb plate 3, the design of the anti-skid grooves can increase the friction when the wheel contacts the columnar comb teeth 3043, and then utilize the rotational driving force of the wheel to more effectively push the columnar comb teeth 3043 to rotate on the crank 3042, which can further ensure that dust, sand and gravel and other dirt will not accumulate between the fixed comb teeth 202 and the columnar comb teeth 3043, thereby improving the self-cleaning effect and further improving the service life of the multi-directional displacement bridge expansion joint device.

[0041] In this embodiment, grooves are provided on the sides of the two fixed plates 1 that are close to each other, and a rubber waterstop 4 is provided between the two fixed plates 1 and located below the L-shaped comb beam 301. The two side edges of the rubber waterstop 4 can be detachably installed and fixed in the corresponding grooves. The design of the rubber waterstop 4 effectively prevents rainwater from leaking downward and maintains the normal function of the expansion joint of the bridge. The rubber waterstop 4 can be made of EPDM rubber, which has good elasticity and aging resistance, can adapt to the deformation of the bridge, has a long service life, and maintains the stability of the structure.

[0042] In this embodiment, a plurality of triangular reinforcement blocks 5 distributed at equal intervals are fixedly installed at the bottom of the L-shaped comb plate beam 301, and the plurality of triangular reinforcement blocks 5 are all fixedly connected to the same fixed plate 1. The design of the plurality of triangular reinforcement blocks 5 can enhance the connection strength between the L-shaped comb plate beam 301 and the fixed plate 1.

[0043] In this embodiment, the two fixed plates 1 are fixedly installed with anchor bolts 6 on the side away from each other. The number of anchor bolts 6 is set to multiple, and the multiple anchor bolts 6 are distributed in an array. The multiple anchor bolts 6 distributed in the array are designed to firmly install and fix the two fixed plates 1 on the end faces of the two beam ends in the bridge expansion joint, so that the overall installation of the multi-directional displacement bridge expansion joint device is firm and stable.

[0044] In this embodiment, through the above structure, when the multi-directional displacement bridge expansion joint device provided by the present application is in use, when the bridge produces transverse displacement (along the width of the bridge) due to factors such as temperature changes and wind effects, the bridge will drive the fixed comb plate 2 or the movable comb plate 3 to move transversely through the fixed plate 1, and the slide 3032 in the displacement bearing frame 303 will slide along the transverse guide shaft 3031. During this process, the support column 3034 drives the telescopic rod 3036 and the transverse shaft 3041, the crank 3042 and the columnar comb teeth 3043 at its top to move transversely. One side of the crank 3042 can smoothly enter the avoidance groove 204 to move, avoiding contact with the fixed comb teeth 202 When the bridge is in a transverse direction, the spring 30310 is compressed or stretched, providing a transverse restoring force, thereby adapting to the transverse displacement of the bridge. When the bridge is in a transverse direction, the columnar comb teeth 3043 follow the transverse movement, and the fixed comb teeth 202 and the columnar comb teeth 3043 can always maintain a relatively flush state. When the external force disappears, the elastic force of the spring 30310 pushes the slide 3032 to return to its initial position, thereby causing the support column 3034 to drive the horizontal axis 3041, the crank 3042 and the columnar comb teeth 3043 at its top to return to their initial positions. At this time, the fixed comb teeth 202 and the columnar comb teeth 3043 continue to maintain a relatively flush state.

[0045] When the bridge is displaced in the direction of the bridge (along the length of the bridge) due to factors such as temperature changes, the bridge will drive the fixed comb plate 2 or the movable comb plate 3 to move in the direction of the bridge through the fixed plate 1, and the support column 3034 in the displacement bearing frame 303 will slide along the connecting shaft 3033, and the support column 3034 will drive the telescopic rod 3036 and the horizontal axis 3041, the crank 3042 and the columnar comb teeth 3043 at its top to move in the direction of the bridge. The spring 2 3039 is compressed or extended in this process, providing a restoring force in the direction of the bridge, so that it can adapt to the bridge. When the bridge is displaced in the direction of the bridge, and the columnar comb teeth 3043 follow the movement in the direction of the bridge, the fixed comb teeth 202 and the columnar comb teeth 3043 can always remain in a relatively flush state. When the displacement in the direction of the bridge is completed, the elastic force of the second spring 3039 pushes the supporting column 3034 and the horizontal axis 3041 at its top, the crank 3042 and the columnar comb teeth 3043 to return to their initial positions. At this time, the fixed comb teeth 202 and the columnar comb teeth 3043 continue to remain in a relatively flush state.

[0046] When the bridge is vertically displaced due to factors such as settlement caused by vehicle loads, the bridge will drive the fixed comb plate 2 or the movable comb plate 3 to move vertically through the fixed plate 1, and the telescopic rod 3036 in the displacement bearing frame 303 will slide vertically in the vertical groove 3035, driving the horizontal axis 3041, the crank 3042 and the columnar comb teeth 3043 to move upward or downward. The spring 3038 in the compressed state provides vertical elastic support and reset force, thereby adapting to the vertical displacement of the bridge, and the bridge produces vertical displacement. When the vertical displacement is completed, the elastic force of the spring 1 3038 pushes the telescopic rod 3036 and the horizontal axis 3041 at its top, the crank 3042 and the cylindrical comb teeth 3043 to return to their initial positions. At this time, the fixed comb teeth 202 and the cylindrical comb teeth 3043 continue to maintain a relatively flush state.

[0047] Thereby, the requirements of the bridge for deformation in the longitudinal, transverse and vertical directions can be met at the same time, and the function of multi-directional displacement is realized. Moreover, the fixed comb teeth 202 and the columnar comb teeth 3043 can always maintain a relatively flush state during the multi-directional displacement of the bridge expansion joint. On the one hand, the vehicle bumps and vibrations caused by the unevenness of the comb teeth are effectively avoided, and the noise generated by the collision between the wheels and the comb teeth is reduced. On the other hand, traffic accidents such as tire blowouts and rollovers caused by the wheels getting stuck in the comb tooth gaps or the sudden increase in the wheel impact load when the vehicle passes can be prevented. On the other hand, it can ensure that the fixed comb plate 2 and the movable comb plate 3 can evenly bear the pressure of the vehicle, effectively eliminating the phenomenon of excessive local stress caused by comb tooth misalignment, and effectively solving the problem of fatigue fracture of some comb tooth roots caused by stress concentration caused by comb tooth misalignment, thereby extending the service life of the expansion joint device as a whole, and providing a smoother, quieter and safer traffic environment for passing vehicles.

[0048] When the vehicle passes through the fixed comb plate 2 and the movable comb plate 3, the wheel contacts the outer surface of the columnar comb teeth 3043, and by providing anti-skid grooves on the outer surface of the columnar comb teeth 3043 to increase the friction when in contact with the wheel, under the action of the rotating driving force of the wheel, the columnar comb teeth 3043 can be pushed to effectively rotate on the crank 3042. During the rotation of the columnar comb teeth 3043, the airflow generated when the vehicle passes will discharge the dust, sand and gravel and other dirt that falls between the fixed comb teeth 202 and the columnar comb teeth 3043 in time, achieving a certain self-cleaning effect and preventing the accumulation of more and more dirt and affecting the normal displacement function of the expansion joint device. Example 2

[0049] Based on the multi-directional displacement bridge expansion joint device provided in the first embodiment of the present application, the second embodiment of the present application proposes another multi-directional displacement bridge expansion joint device. The second embodiment is merely a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0050] The second embodiment of the present application will be further described below with reference to the accompanying drawings and implementation plans.

[0051] See also Figure 10-11 In the multi-directional displacement bridge expansion joint device: a polymer elastic filling strip 7 is fixedly installed on the side wall of the L-shaped comb plate beam 301 close to the fixed comb teeth 202, and the fixed comb teeth 202 are fixedly connected to the polymer elastic filling strip 7 on the side away from the rectangular comb plate beam 201. The top surface of the polymer elastic filling strip 7 is flush with the top surface of the fixed comb teeth 202. The polymer elastic filling strip 7 is used to fill the gap between the fixed comb teeth 202 and the L-shaped comb plate beam 301, and utilizes the excellent elastic deformation characteristics of the polymer elastic filling strip 7 to adapt to the multi-directional displacement of the bridge expansion joint without being easily damaged. The fixed comb teeth 202 are flush with the top surface of the polymer elastic filling strip 7, and the synergistic effect of the columnar comb teeth 3043 can effectively reduce the noise and bumps generated when the vehicle passes, so that the vehicle passes smoothly, ensuring driving safety and improving the driving experience.

[0052] In this embodiment, the polymer elastic filling strip 7 can be made of any one of chloroprene rubber, EPDM rubber, high-elasticity polyurethane, styrene-based thermoplastic elastomer materials, polyolefin-based thermoplastic elastomer materials, rubber-plastic blends, fiber-reinforced polymer materials and silicone-modified materials. According to the temperature range, humidity, acid rain, ultraviolet radiation and other conditions of the area where the bridge is located, the polymer elastic filling strip 7 made of the above materials with matching weather resistance is selected. For example, chloroprene rubber has excellent weather resistance and ozone resistance, good oil resistance and solvent resistance, and moderate elasticity and mechanical properties. The polymer elastic filling strip 7 made of chloroprene rubber is suitable for use in bridges exposed outdoors and requiring resistance to ultraviolet rays and atmospheric aging. The bridge expansion joints are especially stable in rainy or humid environments; EPDM rubber has excellent weather resistance and aging resistance, can be used for a long time in the range of -50℃ to 150℃, and is resistant to corrosion by chemical media such as acids and alkalis. The polymer elastic filling strip 7 made of EPDM rubber is suitable for bridge expansion joints in areas with severe cold, high temperature or serious air pollution; the elastic modulus of high-elastic polyurethane can be adjusted in a wide range and can be prepared from soft to hard. It has strong wear resistance and tear resistance, good adhesion and oil resistance. The polymer elastic filling strip 7 made of high-elastic polyurethane material is suitable for bridges that require high elasticity and wear resistance (such as heavy-load traffic bridges); styrene-based thermoplastic elastomer materials have both the properties of plastic reinforcement The high molecular elastic filling strip 7 made of styrene thermoplastic elastomer material has the characteristics of workability and elasticity of rubber, recyclability, weather resistance and aging resistance better than natural rubber, and is suitable for bridge expansion joints with requirements for environmental protection and recyclability; polyolefin thermoplastic elastomer material has excellent weather resistance and aging resistance, can be used in the range of -40℃ to 130℃, has good chemical stability and low density, and is suitable for lightweight and highly weather-resistant bridge expansion joints, especially in coastal areas or acid rain environments; rubber-plastic blends (such as EPDM and PP blends) combine the high elasticity of rubber and the processability of plastic, with The polymer elastic filling strip 7 made of rubber-plastic blend material has excellent weather resistance, wear resistance and other properties, and is suitable for large bridge expansion joints with high comprehensive performance requirements; fiber-reinforced polymer materials have the advantages of high elasticity, high mechanical strength and strong deformation resistance. The polymer elastic filling strip 7 made of fiber-reinforced polymer materials is suitable for bridge expansion joints with large displacements and can withstand greater load and deformation requirements; silicone modified materials combine the weather resistance of silicone rubber and the mechanical properties of other polymer materials, and have both high elasticity and excellent aging resistance. The polymer elastic filling strip 7 made of silicone modified materials is suitable for bridge expansion joints in extreme environments (such as plateaus and cold areas).

[0053] In this embodiment, a plurality of evenly distributed cavities 701 are provided in the polymer elastic filling strip 7. The design of the plurality of cavities 701 inside the polymer elastic filling strip 7 can enhance the elasticity of the polymer elastic filling strip 7 and effectively buffer the impact of vehicle load, so that the vehicle can pass through the fixed comb plate 2 and the movable comb plate 3 more smoothly, further improving the comfort of the vehicle when driving on the bridge.

[0054] In this embodiment, through the above-mentioned structure, when the multi-directional displacement bridge expansion joint device provided by the present application is in use, when the bridge produces deformation in the longitudinal, transverse or vertical directions of the bridge, the polymer elastic filling strip 7 can be squeezed or stretched by utilizing its own high elasticity. When the bridge returns to its initial state, the polymer elastic filling strip 7 will also return to its initial state. When the vehicle passes through the fixed comb plate 2 and the movable comb plate 3, since the polymer elastic filling strip 7 is filled and fixed between the fixed comb teeth 202 and the L-shaped comb plate beam 301, it can further reduce the noise and bumps generated by the wheels and the fixed comb plate 2 and the movable comb plate 3 when the vehicle passes, and reduce the vibration generated by the wheels and the fixed comb plate 2 and the movable comb plate 3, so that the vehicle passes more smoothly and comfortably. At the same time, the polymer elastic filling strip 7 cooperates with the multiple cavities 701 set inside it, which can also effectively buffer the impact of vehicle load, reduce the direct force of the load on the expansion joint device, protect the expansion joint device components, and extend the service life.

[0055] The above is a detailed introduction to the multi-directional displacement bridge expansion joint device provided by the present application. Specific embodiments are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core concept of the present application. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A multi-directional displacement bridge expansion joint device, characterized in that: The invention comprises two fixed plates (1) installed and fixed between the expansion joints of a bridge, wherein a fixed comb plate (2) and a movable comb plate (3) are respectively provided on the sides of the two fixed plates (1) close to each other, wherein the fixed comb plate (2) comprises a rectangular comb plate beam (201) and a plurality of fixed comb teeth (202), wherein the rectangular comb plate beam (201) is fixedly connected to one side of one of the fixed plates (1), wherein the plurality of fixed comb teeth (202) are fixedly installed on one side of the rectangular comb plate beam (201) and are distributed at equal intervals, wherein a slot (203) is provided at the bottom of the fixed comb teeth (202), and an avoidance groove (204) with an open bottom is provided on the left and right sides of the fixed comb teeth (202), wherein the two avoidance grooves (204) are provided with a plurality of movable comb teeth (202). The movable comb plate (3) is connected to the slot (203), the movable comb plate (3) includes an L-shaped comb plate beam (301), a plurality of displacement bearing frames (303) and a movable comb tooth assembly (304), the L-shaped comb plate beam (301) is fixedly connected to one side of another fixed plate (1), the bottom of the L-shaped comb plate beam (301) is provided with a plurality of mounting holes (302) distributed at equal intervals, the bottoms of the plurality of displacement bearing frames (303) are respectively arranged in the corresponding mounting holes (302), the movable comb tooth assembly (304) is located on the top of the plurality of displacement bearing frames (303), and the movable comb tooth assembly (304) includes a plurality of transverse axes (3041), a plurality of cranks (3042) and a plurality of columnar comb teeth (304). 043), a plurality of the transverse shafts (3041) are respectively arranged on the top of the corresponding displacement carrier (303), a plurality of the transverse shafts (3041) are respectively movably inserted into the corresponding slots (203), the top of the transverse shaft (3041) is in conflict with the top inner wall of the slot (203), the two ends of the transverse shaft (3041) respectively pass through the corresponding avoidance groove (204), the crank (3042) is fixedly installed between two adjacent transverse shafts (3041), and the crank (3042) is located between two adjacent fixed comb teeth (202), a plurality of the columnar comb teeth (3043) are respectively rotatably installed on the corresponding crank (3042), the rectangular comb plate beam (2 01), the top surfaces of the plurality of fixed comb teeth (202), the L-shaped comb plate beam (301), the plurality of columnar comb teeth (3043) and the two fixed plates (1) are arranged flush with each other, the displacement support frame (303) includes two transverse guide shafts (3031), two slides (3032), a connecting shaft (3033), a supporting column (3034), a telescopic rod (3036), a supporting plate (3037), a spring one (3038), two spring twos (3039) and four spring threes (30310), the two transverse guide shafts (3031) are fixedly installed in the mounting hole (302), and the two slides (3032) are respectively slidably sleeved on the corresponding transverse guide shafts (3031).The two ends of the connecting shaft (3033) are respectively fixedly connected to the sides of the two sliding seats (3032) that are close to each other. The supporting column (3034) is slidably mounted on the connecting shaft (3033). The top end of the supporting column (3034) extends into the corresponding slot (203). The top end of the supporting column (3034) is provided with a vertical slot (3035). The bottom end of the telescopic rod (3036) is slidably mounted in the vertical slot (3035). The supporting plate (3037) is fixedly mounted on the top end of the telescopic rod (3036). The transverse axis (3041) is fixedly mounted on the top of the supporting plate (3037). The spring 1 (3038) is fixedly mounted on the top end of the supporting column (3034). The top end of the spring 1 (3038) is in contact with the supporting plate. (3037) is fixedly connected to the bottom, the spring one (3038) is sleeved on the telescopic rod (3036), the two spring twos (3039) are respectively fixedly installed on the front and rear outer walls of the support column (3034), the ends of the two spring twos (3039) away from each other are respectively fixedly connected to the corresponding slide (3032), the two spring twos (3039) are sleeved on the connecting shaft (3033), the four spring threes (30310) are respectively fixedly installed on the left and right side walls of the two slides (3032), the end of the spring three (30310) away from the slide (3032) is fixedly connected to the inner wall of one side of the mounting hole (302), and the spring three (30310) is sleeved on the corresponding transverse guide shaft (3031).

2. The multi-directional displacement bridge expansion joint device according to claim 1, characterized in that: The plurality of fixed comb teeth (202) are integrally cast with the rectangular comb plate beam (201); the inner width of the avoidance groove (204) is greater than the width of the crank (3042); and the height of the avoidance groove (204) is greater than the height of the crank (3042).

3. The multi-directional displacement bridge expansion joint device according to claim 1, characterized in that: The outer surface of the columnar comb teeth (3043) is provided with anti-slip grooves.

4. The multi-directional displacement bridge expansion joint device according to claim 1, characterized in that: A groove is provided on one side of the two fixing plates (1) close to each other, and a rubber water stop (4) is provided between the two fixing plates (1) and is located below the L-shaped comb plate beam (301). Both side edges of the rubber water stop (4) are detachably mounted and fixed in the corresponding grooves.

5. The multi-directional displacement bridge expansion joint device according to claim 4, characterized in that: A plurality of triangular reinforcement blocks (5) distributed at equal intervals are fixedly mounted on the bottom of the L-shaped comb plate beam (301), and the plurality of triangular reinforcement blocks (5) are all fixedly connected to the same fixed plate (1).

6. The multi-directional displacement bridge expansion joint device according to claim 1, characterized in that: Anchor bolts (6) are fixedly mounted on the sides of the two fixing plates (1) that are away from each other. The number of the anchor bolts (6) is set to be multiple, and the multiple anchor bolts (6) are distributed in an array.

7. The multi-directional displacement bridge expansion joint device according to claim 1, characterized in that: A polymer elastic filling strip (7) is fixedly mounted on a side wall of the L-shaped comb plate beam (301) close to the fixed comb teeth (202); a side of the fixed comb teeth (202) away from the rectangular comb plate beam (201) is fixedly connected to the polymer elastic filling strip (7); and a top surface of the polymer elastic filling strip (7) is flush with a top surface of the fixed comb teeth (202).

8. The multi-directional displacement bridge expansion joint device according to claim 7, characterized in that: A plurality of evenly distributed cavities (701) are provided in the polymer elastic filling strip (7).

Images