Bridge expansion joint bridge floor height difference adjusting mechanism

Abstract

The utility model relates to the field of bridge floor height difference adjustment, in particular to a bridge expansion joint bridge floor height difference adjusting mechanism which comprises a beam supporting plate pre-buried under a bridge floor and a base plate pre-buried on a supporting cross beam, a supporting leg frame vertically penetrates through the base plate in a sliding mode, and a lifting beam is fixed to the upper end of the supporting leg frame. A plurality of supporting plates are evenly fixed to the lifting beam, the beam supporting plate slides on the supporting plates in the horizontal direction, a control beam slides on the base plate, a plurality of lug plates are evenly fixed to the control beam, transverse shafts transversely penetrate through the lug plates and the supporting plates, a plurality of rotating plates are rotationally arranged between the two transverse shafts, and a surrounding frame is arranged on the edge of the base plate in a surrounding mode. A driving mechanism is installed between the enclosure frame and the control beam and used for enabling the control beam to be close to or away from the supporting leg frame so as to control the beam supporting plate to ascend and descend. The bridge expansion joint is compatible with the normal expansion function of the bridge expansion joint.

Description

Technical Field

[0001] This utility model relates to the field of bridge deck elevation difference adjustment, and more specifically to a bridge expansion joint bridge deck elevation difference adjustment mechanism. Background Technology

[0002] Currently, uneven deformation of the bridge decks on both sides of the bridge expansion joint can occur due to factors such as temperature changes, vehicle loads, and foundation settlement, resulting in a height difference between the two decks. To maintain a flat bridge deck and reduce vehicle bumps and damage to the bridge structure, it is necessary to adjust the two bridge decks to the same level. However, existing adjustment mechanisms, while adjusting the height difference, are not conducive to the normal expansion and contraction function of the bridge expansion joint, thus affecting the free deformation of the bridge structure. Utility Model Content

[0003] This utility model provides a bridge expansion joint deck height difference adjustment mechanism, which is convenient to accommodate the normal expansion and contraction functions of bridge expansion joints.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows:

[0005] A bridge expansion joint height difference adjustment mechanism includes a support beam plate embedded under the bridge deck and a base plate embedded in a support beam. A leg frame slides vertically through the base plate, and a lifting beam is fixed to the upper end of the leg frame. Multiple support plates are evenly fixed on the lifting beam. The support beam plate slides horizontally on the multiple support plates. A control beam slides on the base plate, and multiple ear plates are evenly fixed on the control beam. A transverse shaft runs horizontally through each ear plate and support plate. Multiple rotating plates rotate between two transverse shafts. A frame surrounds the edge of the base plate, and a drive mechanism is installed between the frame and the control beam to move the control beam closer to or further away from the leg frame, thereby controlling the lifting and lowering of the support beam plate.

[0006] The base plate extends downwards with a track for enclosing the support leg frame.

[0007] The drive mechanism includes an adjusting screw that is threaded through and connected to the frame.

[0008] A top plate is provided between the control beam and the adjusting screw.

[0009] A rubber block is provided between the control beam and the top plate.

[0010] There are two rubber blocks, arranged symmetrically in the transverse direction.

[0011] A spring is installed between the two rubber blocks to tighten the control beam and the top plate.

[0012] The control beam is provided with a limiting frame near the adjusting screw end, and the top plate slides within the limiting frame.

[0013] The frame is provided with a sleeve that is threadedly connected to the adjusting screw at the corresponding position of the adjusting screw.

[0014] The base plate is provided with multiple protruding ribs along the sliding direction of the control beam. Attached Figure Description

[0015] Figure 1 A schematic diagram of the bridge deck elevation difference adjustment mechanism for bridge expansion joints;

[0016] Figure 2 This is a structural diagram of the base plate and the surrounding frame;

[0017] Figure 3 A structural schematic diagram of the outrigger frame, lifting beam, and support beam plate;

[0018] Figure 4 and Figure 5 A schematic diagram of the control beam and rotating plate;

[0019] Figure 6 This is a structural diagram of the top plate, rubber block, and spring.

[0020] In the picture:

[0021] 1. Base plate; 2. Frame; 3. Track; 4. Support leg; 5. Lifting beam; 6. Support plate; 7. Adjusting screw; 8. Support beam plate; 9. Control beam; 10. Ear plate; 11. Horizontal shaft; 12. Rotating plate; 13. Limiting frame; 14. Top plate; 15. Rubber block; 16. Spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is combined Figure 1-6 A detailed description of the bridge expansion joint and bridge deck elevation adjustment mechanism is provided below:

[0024] A bridge expansion joint height difference adjustment mechanism includes a support beam plate 8 embedded under the bridge deck and a base plate 1 embedded on a support beam. A support leg 4 slides vertically through the base plate 1. A lifting beam 5 is welded and fixed to the upper end of the support leg 4. Multiple support plates 6 are uniformly welded and fixed to the lifting beam 5. The support beam plate 8 slides horizontally on the multiple support plates 6. A control beam 9 slides against the upper surface of the base plate 1. Multiple ear plates 10 are uniformly welded and fixed to the control beam 9. A transverse shaft 11 passes through the multiple ear plates 10 and the multiple support plates 6. Multiple rotating plates 12 rotate between two transverse shafts 11. A frame 2 surrounds the edge of the base plate 1. A drive mechanism is installed between the frame 2 and the control beam 9 to move the control beam 9 closer to or away from the support leg 4, thereby controlling the lifting and lowering of the support beam plate 8.

[0025] When it is necessary to adjust the lifting of the bridge deck, the control beam 9 is moved closer to or away from the support leg 4 by the drive mechanism. The control beam 9 will drive the horizontal shaft 11 through the ear plate 10 to move closer to or away from the support leg 4. Then, it will drive another horizontal shaft 11 through multiple support plates 6. The horizontal shaft 11 will drive the lifting beam 5 through the support leg 4 to lift and lower on the base plate 1, thereby driving the support beam plate 8 to lift and lower, and finally achieving the purpose of adjusting the lifting of the bridge deck.

[0026] Among them, multiple support plates 6 evenly fixed on the lifting beam 5 are perpendicular to the bridge expansion joint. The lower end of the beam support plate 8 is provided with multiple slots, and the upper ends of the multiple support plates 6 slide in the multiple slots, so that the beam support plate 8 fixed to the bridge deck can slide along the multiple support plates 6. No matter how the bridge deck height is adjusted, it is easy to accommodate the normal expansion and contraction function of the bridge expansion joint and does not affect the free deformation of the bridge structure.

[0027] It should be noted that multiple ear plates 10 and multiple support plates 6 are provided with through holes for installation with the horizontal shaft 11. Multiple rotating plates 12 are provided with through holes at both ends for fitting onto the horizontal shaft 11, forming a rotating installation with respect to the two horizontal shafts 11. After installation, the weight of the bridge deck is pressed down onto the multiple support plates 6 through the support beam plate 8. The multiple support plates 6 transmit the pressure to the control beam 9 through the multiple rotating plates 12, causing the control beam 9 to move away from the outrigger 4 and then press against the drive mechanism. The outrigger 4 slides through the base plate 1, forming a limit on the lifting beam 5, so that the lifting beam 5 can only move up and down. This ensures that the control beam 9 can move closer to or away from the outrigger 4, and can control the lifting of the support beam plate 8, thereby adjusting the height of the bridge deck.

[0028] Further:

[0029] The base plate 1 has a downward-extending track 3 for enclosing the support leg frame 4;

[0030] To ensure that the outrigger 4 can be raised, lowered, and slid smoothly, the track 3 is set to extend downward into the support beam, while ensuring the stability between the base plate 1 and the support beam.

[0031] Further:

[0032] The drive mechanism includes an adjusting screw 7 that is threaded through and connected to the frame 2.

[0033] Rotating the adjusting screw 7 causes the adjusting screw 7 to move relative to the frame 2 along its own axis via the threaded connection between the adjusting screw 7 and the frame 2. Due to the weight of the bridge deck, the control beam 9 is pressed against the drive mechanism, that is, against the inner end of the adjusting screw 7. As the adjusting screw 7 moves axially, the control beam 9 moves on the base plate 1 along with the adjusting screw 7, thereby adjusting the height of the bridge deck.

[0034] Based on the above embodiments:

[0035] A top plate 14 is provided between the control beam 9 and the adjusting screw 7. The top plate 14 contacts the adjusting screw 7, thus avoiding direct contact between the control beam 9 and the adjusting screw 7 and preventing damage to the control beam 9.

[0036] Further:

[0037] A rubber block 15 is provided between the control beam 9 and the top plate 14;

[0038] Two rubber blocks 15 are provided and arranged symmetrically in the transverse direction.

[0039] With the rubber block 15 placed between the control beam 9 and the top plate 14, the weight of the bridge deck causes the control beam 9 to squeeze the rubber block 15. The rubber block 15 then transmits the pressure to the top plate 14 and the adjusting screw 7. Through the elastic deformation of the rubber block 15, when vehicles travel on the bridge deck, causing the weight of the bridge deck to increase, it can form a pressure buffer, that is, reduce the impact force when vehicles pass by, improve driving comfort, and also reduce the impact force of the threaded connection between the adjusting screw 7 and the frame 2.

[0040] Further:

[0041] A spring 16 is provided between the two rubber blocks 15 to tighten the control beam 9 and the top plate 14.

[0042] The spring 16 further ensures the cushioning effect and also prevents the cushioning effect from disappearing after the rubber block 15 ages over a long period of use.

[0043] Further:

[0044] The control beam 9 is provided with a limiting frame 13 near the adjusting screw 7, and the top plate 14 is limited to slide within the limiting frame 13.

[0045] Since vehicles frequently pass over the bridge surface, they repeatedly press against the top plate 14. Therefore, a limiting frame 13 is set to limit the movement of the top plate 14, ensuring that the top plate 14 can only move in the axial direction of the adjusting screw 7, thus preventing the top plate 14 from moving laterally and detaching from the adjusting screw 7, which would affect its use.

[0046] Further:

[0047] By providing a sleeve at the corresponding adjusting screw 7 in the frame 2 that is threadedly connected to the adjusting screw 7, the range of threaded connection between the frame 2 and the adjusting screw 7 is increased, ensuring the safety of the threaded connection between the two.

[0048] Further:

[0049] By providing multiple protruding ribs on the base plate 1 along the sliding direction of the control beam 9, and by providing multiple grooves at the lower end of the control beam 9 to cooperate with the multiple protruding ribs for sliding, the stability of the control beam 9 sliding on the base plate 1 is improved.

[0050] Of course, the above description is not a limitation of this instruction manual, and this utility model is not limited to the examples mentioned above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model are also within the protection scope of this utility model.

Claims

1. A bridge expansion joint deck height difference adjustment mechanism, characterized in that: The system includes a support beam plate (8) embedded under the bridge deck and a base plate (1) embedded on the support beam. A support leg (4) slides vertically through the base plate (1). A lifting beam (5) is fixed at the upper end of the support leg (4). Multiple support plates (6) are evenly fixed on the lifting beam (5). The support beam plate (8) slides horizontally on the multiple support plates (6). A control beam (9) slides on the base plate (1). Multiple ear plates (10) are evenly fixed on the control beam (9). A horizontal shaft (11) runs horizontally through the multiple ear plates (10) and the multiple support plates (6). Multiple rotating plates (12) rotate between the two horizontal shafts (11). A frame (2) surrounds the edge of the base plate (1). A drive mechanism is installed between the frame (2) and the control beam (9) to move the control beam (9) closer to or away from the support leg (4), thereby controlling the lifting and lowering of the support beam plate (8).

2. The bridge expansion joint deck height difference adjustment mechanism according to claim 1, characterized in that: The base plate (1) has a downward-extending track (3) for enclosing the support leg frame (4).

3. The bridge expansion joint deck height difference adjustment mechanism according to claim 1, characterized in that: The drive mechanism includes an adjusting screw (7) that is threaded through and connected to the frame (2).

4. The bridge expansion joint deck height difference adjustment mechanism according to claim 3, characterized in that: A top plate (14) is provided between the control beam (9) and the adjusting screw (7).

5. The bridge expansion joint deck height difference adjustment mechanism according to claim 4, characterized in that: A rubber block (15) is provided between the control beam (9) and the top plate (14).

6. The bridge expansion joint deck height difference adjustment mechanism according to claim 5, characterized in that: Two rubber blocks (15) are provided and arranged symmetrically in the transverse direction.

7. The bridge expansion joint deck height difference adjustment mechanism according to claim 6, characterized in that: A spring (16) is provided between the two rubber blocks (15) to tighten the control beam (9) and the top plate (14).

8. The bridge expansion joint deck height difference adjustment mechanism according to claim 4, characterized in that: The control beam (9) is provided with a limiting frame (13) near the end of the adjusting screw (7), and the top plate (14) slides within the limiting frame (13).

9. The bridge expansion joint deck height difference adjustment mechanism according to claim 3, characterized in that: The frame (2) is provided with a sleeve that is threadedly connected to the adjusting screw (7) at the position corresponding to the adjusting screw (7).

10. The bridge expansion joint deck height difference adjustment mechanism according to claim 1, characterized in that: The base plate (1) is provided with multiple protruding ribs along the sliding direction of the control beam (9).

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