Anti-bounce sideslip displacement type expansion joint device

Abstract

The utility model relates to an anti-bounce sideslip displacement type expansion joint device. The anti-bounce sideslip displacement type expansion joint device comprises a first cross beam, a second cross beam, two limiting beams, a first shaft rod, a second shaft rod and a plurality of steel ribs, the two cross beams are fixedly arranged on the beam end top faces of the two sides of the expansion joint in the transverse bridge direction, the two limiting beams are arranged on the outer sides of the top faces of the two cross beams respectively and fixed through bolts, the top faces of the two cross beams are each provided with a shaft groove in the longitudinal direction, and the side, facing the shaft grooves of the cross beams, of each limiting beam is provided with a limiting groove in the longitudinal direction. The two ends of each steel rib extend out of a limiting plug in the longitudinal direction respectively, the two ends of each steel rib are supported on the two shaft rods respectively and rotationally connected with the shaft rods through pin shafts, and the limiting plugs at the two ends of each steel rib are inserted into the limiting grooves in the two limiting beams respectively. According to the utility model, the bounce of the steel rib can be limited, and the end part of the steel rib can be prevented from being directly impacted by a vehicle, so that the driving safety is ensured, and the service life of the steel rib is effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and relates to a bridge expansion joint device, in particular to an anti-bouncing type side-sliding displacement expansion joint device. Background Art

[0002] Commonly used bridge expansion joint devices mainly include modular expansion joints and comb-type expansion joints. The modular expansion joint is an integral structure, including two displacement boxes and multiple cross-bridge beams. A rubber sealing strip is connected between the beams. Once a certain beam is damaged, the entire width must be replaced, resulting in a high cost, and traffic needs to be interrupted temporarily during the replacement construction process. The comb-type expansion joint includes two comb plates respectively anchored at the two beam ends, and the teeth of the two comb plates are interlaced with each other. Since the comb plate is a cantilever structure, the teeth are prone to breakage and upward warping, affecting the smoothness of vehicle passage and posing a safety hazard to driving.

[0003] In view of the above problems existing in the existing commonly used expansion joint devices, Patent CN116024890A proposes a grid side-sliding displacement expansion joint device, which mainly includes a fixed cross beam, a sliding cross beam, a track beam and multiple steel ribs. The fixed cross beam and the track beam are respectively fixedly arranged transversely on the top surface of the end concrete of the beam segments on both sides of the expansion joint and welded to the anchor parts embedded in the concrete. A chute is provided at the top of the track beam, and the sliding cross beam is slidably arranged in the chute of the track beam. Multiple ribs are arranged in parallel between the fixed cross beam and the sliding cross beam and form a certain angle with the longitudinal direction of the bridge. Both ends of each rib are respectively rotatably connected to the fixed cross beam and the sliding cross beam through pin shafts. In the above structure, when the width of the expansion joint changes or the bridge undergoes lateral displacement, the steel ribs are compressed or stretched along the longitudinal direction of the bridge, and will rotate around the pin shaft connected to the fixed cross beam, and drive the sliding cross beam to slide transversely in the chute of the track beam, so as to adapt to the change of the width of the expansion joint. The steel ribs are arranged across the expansion joint, which can improve the smoothness when the vehicle passes; if a certain steel rib is damaged, it can be replaced separately, which is convenient for maintenance.

[0004] When designing the above grid side-sliding displacement expansion joint device, in order to facilitate the replacement of the steel ribs, both ends of each steel rib are directly exposed on the bridge top surface. However, when a heavy vehicle passes through the bridge, it will cause the bridge to vibrate up and down. When the vibration amplitude is large, it will cause the steel ribs to bounce. If they cannot be fully reset after bouncing, the ends of the steel ribs will warp upward, affecting driving safety; in addition, the vehicle repeatedly impacts the ends of the steel ribs directly, which will affect the service life of the steel ribs. Summary of the Invention

[0005] The purpose of the utility model is to provide an anti-bouncing type side-sliding displacement expansion joint device to ensure driving safety and protect the ends of the steel ribs from direct impact by vehicles in view of the above problems.

[0006] The technical solution of the utility model is as follows:

[0007] A bulletproof jump - type side - sliding displacement expansion joint device, characterized in that it includes a first cross - beam, a second cross - beam, two limit beams, a first shaft rod, a second shaft rod, and multiple steel rib strips;

[0008] On the top surfaces of both the first cross - beam and the second cross - beam, an arc - shaped shaft groove is provided along the longitudinal direction of the cross - beam. Among them, the two ends of the shaft groove of the first cross - beam are of a closed structure, and the two ends of the shaft groove of the second cross - beam are of an open structure;

[0009] The two limit beams are respectively arranged on the outer sides of the top surfaces of the first cross - beam and the second cross - beam, and are fixedly connected to the cross - beam by bolts. Each limit beam is provided with a limit groove along the longitudinal direction on the side facing the shaft groove of the cross - beam;

[0010] The cross - sections of the two shaft rods are both convex structures. The lower half is a hinged part, and the upper half is a supporting part. The cross - section of the hinged part is an arc that coincides with the cross - section of the shaft groove on the cross - beam. The cross - section of the supporting part is rectangular, and the width of the supporting part is less than the width of the top of the hinged part. Multiple pin holes are equidistantly arranged along the longitudinal direction on each shaft rod, and each pin hole penetrates from the top surface of the supporting part into the hinged part;

[0011] The cross - section of the steel rib strip is rectangular. A pin hole penetrating the steel rib strip up and down is respectively provided near both ends of each steel rib strip. Limiting plugs respectively extend out along the longitudinal direction at both ends of each steel rib strip. The height of the top surface of the limiting plug is lower than the height of the top surface of the steel rib strip;

[0012] The first cross - beam and the second cross - beam are respectively arranged transversely across the bridge on the top surfaces of the ends of the beam segments on both sides of the expansion joint, and are welded to the embedded anchor parts in the beam segment concrete. The hinged parts of the first shaft rod and the second shaft rod are respectively located in the shaft grooves on the first cross - beam and the second cross - beam, and the supporting parts protrude above the shaft grooves. Among them, the length of the first shaft rod is equal to the length of the shaft groove of the first cross - beam, and the first shaft rod can rotate axially in the shaft groove of the first cross - beam. The length of the second shaft rod is greater than the length of the second cross - beam, and the second shaft rod can both rotate axially and slide longitudinally in the shaft groove of the second cross - beam. Multiple steel rib strips are arranged in parallel and have a certain angle with the longitudinal direction of the bridge. Both ends of each steel rib strip are respectively supported on the supporting parts of the first shaft rod and the second shaft rod, and are rotationally connected to the shaft rod by a pin shaft. The limiting plugs at both ends of each steel rib strip are respectively inserted into the limiting grooves on the two limit beams. There is a certain gap between the top surface of the limiting plug and the inner wall top surface of the limiting groove, and the top surface of the steel rib strip is flush with the top surface of the limit beam.

[0013] In the present utility model, limit beams are added to the two cross - beams of the existing side - sliding displacement expansion joint device. The limit beams are provided with limit grooves on the side. The limiting plugs at the ends of the steel rib strips are inserted into the limit grooves, which can not only limit the bouncing amplitude of the steel rib strips to ensure driving safety, but also prevent the ends of the steel rib strips from being directly impacted by vehicles, effectively extending the service life of the steel rib strips. Description of the Drawings

[0014] Figure 1 is a longitudinal elevation structure schematic diagram of the present utility model;

[0015] Figure 2 is a plan structure schematic diagram of the present utility model;

[0016] Figure 3 is a cross-sectional structure schematic diagram of a cross beam and a limiting beam;

[0017] Figure 4 is a plan structure schematic diagram of a cross beam and a limiting beam;

[0018] Figure 5 is a cross-sectional structure schematic diagram of a shaft rod;

[0019] Figure 6 is a plan structure schematic diagram of a shaft rod;

[0020] Figure 7 is a plan structure schematic diagram of a steel rib;

[0021] Figure 8 is a side view structure schematic diagram of a steel rib. Detailed implementation manners

[0022] As Figure 1 、 Figure 2 shown, the present utility model includes a first cross beam 1, a second cross beam 2, two limiting beams 3, a first shaft rod 4, a second shaft rod 5, and multiple steel ribs 6;

[0023] As Figure 3 、 Figure 4 shown, an arc-shaped shaft groove 7 is provided along the longitudinal direction of the cross beam on the top surfaces of both the first cross beam 1 and the second cross beam 2, wherein the two ends of the shaft groove of the first cross beam are of a closed structure, and the two ends of the shaft groove of the second cross beam are of an open structure;

[0024] The two limiting beams 3 are respectively arranged on the outer sides of the top surfaces of the first cross beam 1 and the second cross beam 2, and are fixedly connected to the cross beam by bolts 8. A limiting groove 31 is provided along the longitudinal direction on one side of each limiting beam 3 facing the shaft groove of the cross beam;

[0025] As Figure 5 、 Figure 6 shown, the cross sections of both the first shaft rod 4 and the second shaft rod 5 are of a convex structure. The lower half of the cross section is a hinged part 51(61), and the upper half is a supporting part 52(62). The cross section of the hinged part is an arc that fits the cross section of the shaft groove on the cross beam. The cross section of the supporting part is a rectangle, and the width of the supporting part is smaller than the width of the top of the hinged part. A plurality of pin holes 53(63) are arranged at equal intervals along the longitudinal direction on each shaft rod, and each pin hole extends from the top of the supporting part into the hinged part;

[0026] As Figure 7 、Figure 8 As shown, the cross-section of the steel rib 6 is rectangular. A pin hole 61 penetrating the steel rib vertically is provided at each end of each steel rib near the two ends. At both ends of each steel rib 6, a limiting plug 62 extends longitudinally. The height of the top surface of the limiting plug is lower than the height of the top surface of the steel rib.

[0027] As Figure 3 , Figure 4 As shown, the first cross beam 1 and the second cross beam 2 are respectively arranged transversely to the bridge direction on the top surfaces of the ends of the beam segments 101 on both sides of the expansion joint 100, and are welded to the embedded anchor parts 102 in the beam segment concrete. The hinged parts of the first shaft rod 4 and the second shaft rod 5 are respectively located in the shaft grooves on the first cross beam and the second cross beam, and the supporting parts protrude above the shaft grooves. The length of the first shaft rod 4 is equal to the length of the shaft groove of the first cross beam 1. The first shaft rod can rotate axially in the shaft groove of the first cross beam. The length of the second shaft rod 5 is greater than the length of the second cross beam 2. The second shaft rod can rotate axially and slide longitudinally in the shaft groove of the second cross beam. A plurality of steel ribs 6 are arranged in parallel and have a certain angle with the longitudinal direction of the bridge. Both ends of each steel rib are respectively supported on the supporting parts of the two shaft rods. The pin holes at both ends of the steel rib are respectively aligned with the pin holes on the two shaft rods, and are rotationally connected to the shaft rods through a pin shaft 9. The limiting plugs 62 at both ends of each steel rib 6 are respectively inserted into the limiting grooves 31 on the two limiting beams 3. There is a certain gap between the top surface of the limiting plug 62 and the inner wall top surface of the limiting groove 31. The top surface of the steel rib 6 is flush with the top surface of the limiting beam 3.

[0028] In the above structure, when the width of the bridge expansion joint 100 changes or the two beam segments 101 undergo lateral relative displacement, the steel rib 6 will be squeezed or pulled. Since the steel rib has an angle with the longitudinal direction of the bridge, when the steel rib 6 is compressed or stretched, it will rotate around the pin shaft 9 connected to the first shaft rod 4, and drive the second shaft rod 5 to slide longitudinally in the shaft groove of the second cross beam, so as to adapt to the change in the width of the expansion joint. When a vehicle passes through the bridge and causes the bridge to vibrate up and down, the two beam segments on both sides of the expansion joint will undergo vertical relative displacement, and both ends of the steel rib will also move up and down accordingly. However, since the limiting plugs 62 at both ends of the steel rib 6 are located in the limiting grooves 31 on the limiting beams 3, and there is a certain gap between the top surface of the limiting plug and the inner wall top surface of the limiting groove, it can not only meet the up and down movement of the steel rib with the vertical displacement of the bridge, but also limit the large - amplitude bounce of the steel rib, ensure that the steel rib can be completely reset after the vehicle passes, and at the same time avoid the direct impact of the vehicle tire on the end of the steel rib, playing a protective role for the steel rib.

[0029] In the specific implementation of the present utility model, the size of the gap between the top surface of the limiting plug and the inner wall top surface of the limiting groove can be set according to the maximum amplitude of the vertical displacement of the bridge.

[0030] In the specific implementation of the present utility model, in order to make the rotation of the steel rib more smooth, the two ends of each steel rib 6 can be set as outwardly convex arcs; similarly, the ends of the limiting plugs 62 at both ends of each steel rib can also be set as outwardly convex arcs.

[0031] In the specific implementation of the present utility model, a certain gap can also be provided between the end of each steel rib 6 and the limiting beam 3, and a certain gap is also provided between the end of the limiting plug 62 at both ends and the side wall of the upper limiting groove 31 of the limiting beam. With the above structure, when the length of the steel rib changes due to thermal expansion and contraction, a certain length expansion and contraction space can be provided for the steel rib. When the length of the steel rib 6 changes, it can push or pull the two shaft rods 4 and 5 to axially rotate in the shaft groove, so that the length of the steel rib can freely expand and contract.

[0032] In the specific implementation of the present utility model, for the convenience of replacing a single steel rib, the limiting beam 3 can be set as multiple segments. The specific number of segments can correspond to the number of steel ribs. The end faces of the multiple segments are aligned in sequence, and each segment is fixedly connected to the cross beam by bolts 8. When a certain steel rib needs to be replaced, only the limiting beam segments at both ends of the steel rib need to be removed, and then the steel rib can be taken off for replacement without disassembling the entire limiting beam and all the steel ribs.

Claims

1. A bulletproof jump type side-sliding displacement type expansion joint device, characterized in that: It includes a first cross beam, a second cross beam, two limiting beams, a first shaft rod, a second shaft rod, and multiple steel ribs; On the top surfaces of both the first cross beam and the second cross beam, there is an arc-shaped shaft groove along the longitudinal direction of the cross beam. Among them, the two ends of the shaft groove of the first cross beam are of a closed structure, and the two ends of the shaft groove of the second cross beam are of an open structure; The two limiting beams are respectively arranged on the outer sides of the top surfaces of the first cross beam and the second cross beam, and are fixedly connected to the cross beam by bolts. On one side of each limiting beam facing the shaft groove of the cross beam, there is a limiting groove along the longitudinal direction; The cross sections of the two shaft rods are both convex structures. The lower half is a hinged part, and the upper half is a supporting part. The cross section of the hinged part is an arc that coincides with the cross section of the shaft groove on the cross beam. The cross section of the supporting part is rectangular, and the width of the supporting part is smaller than the width of the top of the hinged part. Multiple pin holes are arranged at equal intervals along the longitudinal direction on each shaft rod, and each pin hole penetrates from the top surface of the supporting part into the hinged part; The cross section of the steel rib is rectangular. At both ends of each steel rib, there is a pin hole that penetrates the steel rib vertically. At both ends of each steel rib, there is a limiting plug extending longitudinally. The height of the top surface of the limiting plug is lower than the height of the top surface of the steel rib; The first cross beam and the second cross beam are respectively arranged transversely on the top surfaces of the ends of the beam segments on both sides of the expansion joint, and are welded to the embedded anchor parts in the beam segment concrete. The hinged parts of the first shaft rod and the second shaft rod are respectively located in the shaft grooves on the first cross beam and the second cross beam, and the supporting parts protrude above the shaft grooves. Among them, the length of the first shaft rod is equal to the length of the shaft groove of the first cross beam, and the first shaft rod can rotate axially in the shaft groove of the first cross beam. The length of the second shaft rod is greater than the length of the second cross beam, and the second shaft rod can rotate axially and slide longitudinally in the shaft groove of the second cross beam. Multiple steel ribs are arranged in parallel and have a certain angle with the longitudinal direction of the bridge. Both ends of each steel rib are respectively supported on the supporting parts of the first shaft rod and the second shaft rod, and are rotatably connected to the shaft rod by a pin shaft. The limiting plugs at both ends of each steel rib are respectively inserted into the limiting grooves on the two limiting beams. There is a certain gap between the top surface of the limiting plug and the inner wall top surface of the limiting groove, and the top surface of the steel rib is flush with the top surface of the limiting beam.

2. The bulletproof jump type side-slip displacement type expansion joint device according to claim 1, characterized in that: Both ends of each steel rib are outwardly convex arcs.

3. The bulletproof jump type side-sliding displacement expansion joint device according to claim 1, characterized in that: The ends of the limiting plugs at both ends of each steel rib are outwardly convex arcs.

4. The bulletproof jump type side-sliding displacement type expansion joint device according to claim 1, characterized in that: There is a certain gap between the end of each steel rib and the limiting beam, and there is also a certain gap between the end of the limiting plug at both ends of the steel rib and the side wall of the limiting groove on the limiting beam.

5. The bulletproof jump type side-sliding displacement type expansion joint device according to claim 1, characterized in that: Each limiting beam is divided into multiple segments, and the end faces of the multiple segments are aligned in sequence. Each segment is fixedly connected to the cross beam by bolts.

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