A crack reinforcing device for road and bridge

Abstract

The application relates to the technical field of bridge maintenance, in particular to a crack reinforcing device for road bridges, which comprises two end frames, a guide groove is formed in one side of each of the two end frames, a guide sliding strip is slidably connected to the inner side of each of the two guide grooves, two supporting pieces are fixed between the two guide sliding strips, and the device further comprises two insertion grooves formed in one side of the two supporting pieces, rubber plates are arranged on the inner sides of the two insertion grooves, and the two sides of the rubber plates are fixed to one side of the two supporting pieces through a plurality of reinforcing bolts. The device has novel design, and when a vehicle wheel drives over a bridge crack, the impact force of the vehicle wheel can be buffered through the buffer pressing plate mechanism, direct impact of the vehicle wheel on the crack is avoided, the crack is prevented from being continuously expanded, and the bridge is better protected.

Description

Technical Field

[0001] This invention relates to the field of bridge maintenance technology, specifically a crack reinforcement device for road bridges. Background Technology

[0002] Roads and bridges generally consist of several major parts, including roadbed, pavement, bridges, tunnels, and traffic engineering facilities. They are the cornerstone of stable modern transportation operations, and with the booming development of transportation, the number of high-grade highways, mainly expressways and first-class highways, is increasing year by year. During the service life of roads and bridges, cracks may appear due to increased use and vehicle traffic. To ensure stable operation, reinforcement is necessary.

[0003] A search revealed Chinese patent CN215289636U, which discloses a crack reinforcement device for road and bridge construction. The device has rotating chambers on both the front and rear sides of the main body of the reinforcement plate, and fixing bolts are installed through the bottom sides of the rotating chambers. Fixing devices are installed at the ends of the fixing bolts.

[0004] Based on the above search results, it was found that the reinforcing plates of the device are directly overlapped on both sides of the bridge deck cracks, forming a rigid connection with the bridge deck. When vehicle wheels drive over them, the impact force is transmitted through the reinforcing plates to the edge of the bridge deck cracks, causing the cracks to continue to expand. Summary of the Invention

[0005] The purpose of this invention is to provide a crack reinforcement device for roads and bridges to solve the problems mentioned in the background art.

[0006] A crack reinforcement device for road bridges includes two end frames, each end frame having a guide groove on one side, and a guide strip slidably connected to the inner side of each guide groove. Two support members are fixed between the two guide strips. The device also includes two slots on one side of the two support members, with a rubber plate inside each slot. Both sides of the rubber plate are fixed to one side of the two support members by multiple reinforcing bolts.

[0007] A buffer plate mechanism for mitigating vibration is provided between the two end frames and above the two supports.

[0008] The buffer plate mechanism includes two guide posts fixed on one side of the two end frames and located in the middle section. Sliders are slidably sleeved on the outer side of the two guide posts. A pressure plate is rotatably connected between the two sliders. Multiple compression buffer mechanisms with the same structure are symmetrically arranged on the lower surface of the pressure plate and on both sides thereof.

[0009] Specifically, a rotating column is vertically provided at one end of the pressure plate, and the rotating column is rotatably connected to the slider. Therefore, the pressure plate and the slider can be rotatably connected.

[0010] The compression buffer mechanism includes a connecting seat fixed to the lower surface of the pressure plate. The connecting seat is hinged to one end of the swing arm. A spring seat is fixed above the other end of the swing arm. The upper side of the spring seat is elastically connected to the lower surface of the pressure plate through a buffer spring. Two rollers are rotatably connected to both sides of one end of the swing arm.

[0011] Two side flaps are symmetrically rotatably connected to both sides of the pressure plate. The top of the side flaps is connected to the pressure plate by a torsion spring, and the bottom of the side flaps abuts against the support member.

[0012] The lower sides of the two end frames are rotatably connected by multiple fixing bolts at equal intervals.

[0013] Each of the rollers is fitted with a rubber sleeve on its outer side.

[0014] The support member is a flat plate structure, and the bottom end of the side flap contacts the top of the flat plate structure.

[0015] The support includes a limiting groove plate arranged parallel to the outside of the rubber plate, a positioning rod fixed to the outside of the limiting groove plate, a plurality of cylinders arranged parallel to the outside of the positioning rod, and a steel wire rope with one end perpendicularly passing through the plurality of cylinders. One end of the steel wire rope also passes through the positioning rod and the limiting groove plate.

[0016] The two wire ropes are connected by a tension spring, which is disposed in a perforation in the rubber plate.

[0017] The support member is also connected to a buffer assembly; the buffer assembly includes a telescopic column with one end perpendicularly connected to the outside of one of the cylinders, a fixed cylinder slidably connected to the other end of the telescopic column, a compression spring disposed in the fixed cylinder, and a fixed rod connected to the fixed cylinder.

[0018] Both the telescopic column and the fixing cylinder are inclinedly embedded inside the bridge concrete, and the fixing rod is fixedly installed inside the bridge concrete.

[0019] This invention provides an improved crack reinforcement device for roads and bridges, which has the following improvements and advantages compared with the prior art:

[0020] (1) As one embodiment of this solution, the present invention is novel in design. Through the buffer pressure plate mechanism, when the vehicle wheel drives over the crack in the bridge deck, the impact force of the wheel can be buffered, and the wheel can be prevented from directly hitting the crack, thereby preventing the crack from continuing to expand and playing a better role in protecting the bridge. At the same time, the two support members are elastically connected by the rubber plate, and the two support members are fixed on both sides of the crack in the bridge deck. Therefore, the rubber plate elastically fixes both sides of the crack, which not only strengthens the crack, but also prevents the strengthening bolts or rubber plate from breaking due to the increase and decrease of the crack width when the bridge deck is subjected to thermal expansion and contraction. This can extend the service life of the device and avoid secondary damage to the crack.

[0021] (2) As another embodiment of this solution, by setting a limit groove plate, a positioning rod, a cylinder and a wire rope, the following technical effects can be achieved simultaneously:

[0022] First, the contact area between the cylinder and the concrete ground of the bridge is small, and the bottom of the side flap contacts a small number of cylinders, which reduces the contact area between the cylinder and the ground. Under the action of the tension spring, the cylinder can also slide on the ground, which plays a role in buffering the pressure of vehicles.

[0023] Secondly, due to the flexibility of the wire rope and the cylinder, this support can be used in bridges with curvature, thus expanding the application range of this device.

[0024] Third, several cylinders are set on both sides of the rubber plate and connected by tension springs, which helps to automatically reset the cylinders after the vehicle passes over them.

[0025] (3) As another embodiment of this solution, a buffer component is provided, which has the following technical effects:

[0026] Firstly, the telescopic effect of the telescopic column and the compression spring buffers the movement of the cylinder, while the compression spring also helps the cylinder to return to its original position.

[0027] Secondly, both the fixing cylinder and the fixing rod are set in the concrete under the bridge, which helps to act as a reinforcing bar. At the same time, the fixing rod is inserted into the concrete at an angle, which also helps to convert the friction force of the cylinder on the concrete surface into a force opposite to the friction force, making the fixing rod tend to generate torque. The balance of these two forces also helps to reduce the destructive effect on the bridge concrete and avoid the expansion of cracks. Attached Figure Description

[0028] The present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 This is a schematic diagram of the first-view structure in Embodiment 1 of the present invention.

[0030] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0031] Figure 3 This is in Embodiment 1 of the present invention Figure 2 A magnified structural diagram at point B in the middle.

[0032] Figure 4 This is in Embodiment 1 of the present invention Figure 1 A magnified structural diagram of point A in the middle.

[0033] Figure 5 This is a schematic diagram of the second perspective structure in Embodiment 1 of the present invention.

[0034] Figure 6 This is a partial disassembly diagram of Embodiment 1 of the present invention.

[0035] Figure 7 This is a schematic diagram of the structure of the support member and buffer assembly in Embodiment 2 of the present invention.

[0036] Figure 8 This is a schematic diagram of the connection structure of the two support members in Embodiment 2 of the present invention.

[0037] Figure 9 This is a schematic diagram of the support structure in Embodiment 2 of the present invention.

[0038] Figure 10 This is a structural schematic diagram of the frictional force on the ground and the torque of the fixed rod in Embodiment 2 of the present invention.

[0039] Explanation of reference numerals in the attached drawings: 1. End frame; 2. Support component; 3. Slider; 4. Pressure plate; 5. Side flap; 6. Connecting seat; 7. Swing arm; 8. Spring seat; 9. Buffer spring; 10. Roller; 11. Slot; 12. Rubber plate; 13. Reinforcing bolt; 14. Guide groove; 15. Guide slide; 16. Fixing bolt; 17. Guide post; 18. Telescopic post; 19. Fixing cylinder; 20. Fixing rod; 21. Positioning rod; 22. Cylinder; 23. Steel wire rope; 24. Tension spring; 25. Limiting groove plate. Detailed Implementation

[0040] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1

[0042] This invention provides an improved crack reinforcement device for roads and bridges. The technical solution of this invention is as follows:

[0043] like Figures 1-6 As shown, a crack reinforcement device for road bridges includes two end frames 1, each end frame 1 having a guide groove 14 on one side, and a guide strip 15 slidably connected to the inner side of each guide groove 14. Two support members 2 are fixed between the two guide strips 15. The device also includes two slots 11 on one side of the two support members 2, with rubber plates 12 arranged inside the two slots 11. The two sides of the rubber plates 12 are fixed to one side of the two support members 2 by multiple reinforcing bolts 13. A buffer pressure plate mechanism is also included, located between the two end frames 1 and above the two support members 2.

[0044] Furthermore, the buffer pressure plate mechanism includes two guide posts 17 fixed at the middle position on one side of the two end frames 1. Slider 3 is slidably sleeved on the outer side of the two guide posts 17. A pressure plate 4 is rotatably connected between the two sliders 3. Multiple compression buffer mechanisms with the same structure are symmetrically arranged on the lower surface of the pressure plate 4 at both sides.

[0045] The buffer plate mechanism can buffer the impact force of vehicle wheels when they drive over cracks in the bridge deck, preventing the wheels from directly hitting the cracks and thus preventing the cracks from expanding further, providing better protection for the bridge.

[0046] Furthermore, the compression buffer mechanism includes a connecting seat 6 fixed to the lower surface of the pressure plate 4, a swing arm 7 rotatably connected to one end of the connecting seat 6, a spring seat 8 fixed to one end of the swing arm 7, one side of the spring seat 8 being elastically connected to the lower surface of the pressure plate 4 through a buffer spring 9, and two rollers 10 rotatably connected to both sides of one end of the swing arm 7.

[0047] The compression of the buffer spring 9 and the rolling of the roller 10 buffer the impact force from the pressure plate 4, reducing the transmission of the impact force to the support member 2, thereby providing better protection against cracks.

[0048] Furthermore, two side flaps 5 are symmetrically rotated and connected to both sides of the pressure plate 4; the side flaps 5 reduce the impact of the wheels on the sides of the pressure plate 4 and improve the stability of the vehicle when it passes over them.

[0049] Furthermore, multiple fixing bolts 16 are rotatably connected at equal intervals on the lower sides of the two end frames 1; these are used to fix the end frames 1 to the cracks on the bridge deck, thereby fixing the entire device and improving its stability during use.

[0050] Furthermore, each roller 10 is fitted with a rubber sleeve on its outer side; the rubber sleeve is soft and can further absorb the impact force from the pressure plate 4, thus improving the cushioning effect.

[0051] The support member is a flat plate structure, and the bottom end of the side flap contacts the top of the flat plate structure.

[0052] The specific working process of Embodiment 1 in this invention is as follows:

[0053] In use, by fixing the fixing bolts 16 to the bridge deck, the two end frames 1 can be fixed to the bridge deck, so that the two support members 2 are located on both sides of the bridge deck crack, and the rubber plate 12 is located directly above the crack. Then, the reinforcing bolts 13 are fixed to the bridge deck at the positions on both sides of the crack. The two sides of the crack can be elastically fixed by the rubber plate 12, which not only reinforces the crack, but also prevents the reinforcing bolts 13 or the rubber plate 12 from breaking due to the increase and decrease of the crack width when the bridge deck is subjected to thermal expansion and contraction. This can extend the service life of the device and avoid secondary damage to the crack.

[0054] When a vehicle drives over the crack, the wheel first presses against the upper side of the pressure plate 4 via the side flap 5. The vehicle's weight is applied to the upper side of the pressure plate 4, and the pressure plate 4 is driven by the pressure to move the two sliders 3 vertically downward along the guide post 17. As the pressure plate 4 moves downward, the two side flaps 5 rotate to a horizontal angle. The two side flaps 5 allow the wheel to smoothly press against the upper side of the pressure plate 4. At the same time, the wheel drives off the upper side of the pressure plate 4 via one of the side flaps 5 on the other side, reducing the direct impact between the wheel and the pressure plate 4. When the pressure plate 4 moves downward, it can compress the buffer spring 9 of the compression buffer mechanism, causing the swing arm 7 to rotate to a horizontal angle. At the same time, the roller 10 rolls on the upper side of the support member 2, which can greatly reduce the impact force of the wheel on the crack, thereby preventing the crack from continuing to expand and providing better protection for the bridge.

[0055] Example 2

[0056] See Figures 7-10 The support member 2 includes a limiting groove plate 25 parallel to the outside of the rubber plate 12, a positioning rod 21 fixed to the outside of the limiting groove plate 25, a plurality of cylinders 22 parallel to the outside of the positioning rod 21, and a steel wire rope 23 with one end perpendicularly passing through the plurality of cylinders 22. One end of the steel wire rope 23 also passes through the positioning rod 21 and the limiting groove plate 25.

[0057] Two steel wire ropes 23 are connected by a tension spring 24, which is set in a hole in the rubber plate 12.

[0058] It should be noted that one end of the wire rope 23 is fixedly connected to the outermost cylinder 22.

[0059] Support 2 is also connected to a buffer assembly; the buffer assembly includes a telescopic column 18 with one end perpendicularly connected to the outside of one of the cylinders 22, a fixed cylinder 19 slidably connected to the other end of the telescopic column 18, a compression spring disposed in the fixed cylinder 19, and a fixed rod 20 with its side perpendicularly fixedly connected to the fixed cylinder 19.

[0060] The telescopic column 18 and the fixing cylinder 19 are both inclinedly embedded in the interior of the bridge concrete, and the fixing rod 20 is inclinedly fixed in the interior of the bridge concrete, that is, the bottom end of the fixing rod 20 is inclined inward, while the top end of the fixing rod 20 is inclined outward.

[0061] The telescopic effect of the telescopic column 18 and the compression spring buffers the movement of the cylinder 22, while the compression spring also helps the cylinder 22 to return to its original position. The fixed cylinder 19 and the fixed rod 20 are both set in the concrete under the bridge, which helps to act as a reinforcing rib. At the same time, the fixed rod 20 is inserted into the concrete at an angle, which helps to convert the friction force of the cylinder 22 on the concrete surface into a force opposite to the friction force, so that the fixed rod 20 tends to generate torque. The balance of these two forces also helps to reduce the destructive effect on the bridge concrete.

[0062] For the sake of simplifying the design, the compression spring is not shown in the attached drawings.

[0063] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crack reinforcement device for road bridges, comprising two end frames (1), each end frame (1) having a guide groove (14) on one side, a guide strip (15) slidably connected to the inner side of each guide groove (14), and two support members (2) fixed between the two guide strips (15), characterized in that, It also includes two slots (11) opened on one side of the two support members (2), and a rubber plate (12) is provided on the inner side of the two slots (11). The two sides of the rubber plate (12) are fixed by multiple reinforcing bolts (13) and one side of the two support members (2); A buffer plate mechanism for mitigating vibration is provided between the two end frames (1) and above the two support members (2); The buffer plate mechanism includes two guide posts (17) fixed on one side of the two end frames (1) and located in the middle section. Slider (3) is slidably sleeved on the outer side of the two guide posts (17). A pressure plate (4) is rotatably connected between the two sliders (3). Multiple compression buffer mechanisms with the same structure are symmetrically arranged on the lower surface of the pressure plate (4) and on both sides thereof. The pressure plate (4) has two side flaps (5) symmetrically rotatably connected on both sides. The top of the side flaps (5) is connected to the pressure plate (4) through a torsion spring, and the bottom of the side flaps (5) abuts against the support member (2). The support member (2) includes a limiting groove plate (25) arranged parallel to the outside of the rubber plate (12), a positioning rod (21) fixed to the outside of the limiting groove plate (25), a plurality of cylinders (22) arranged parallel to the outside of the positioning rod (21), and a steel wire rope (23) with one end perpendicularly passing through the plurality of cylinders (22). One end of the steel wire rope (23) also passes through the positioning rod (21) and the limiting groove plate (25). The two wire ropes (23) are connected by a tension spring (24), which is disposed in a perforation in the rubber plate (12); The support member (2) is also connected to the buffer assembly; the buffer assembly includes a telescopic column (18) with one end perpendicularly connected to the outside of one of the cylinders (22), a fixed cylinder (19) slidably connected to the other end of the telescopic column (18), a compression spring disposed in the fixed cylinder (19), and a fixed rod (20) connected to the fixed cylinder (19). The telescopic column (18) and the fixed cylinder (19) are both inclinedly embedded inside the bridge concrete, and the fixed rod (20) is fixedly installed inside the bridge concrete.

2. The crack reinforcement device for roads and bridges according to claim 1, characterized in that, The compression buffer mechanism includes a connecting seat (6) fixed on the lower surface of the pressure plate (4). The connecting seat (6) is hinged to one end of the swing arm (7). A spring seat (8) is fixed above the other end of the swing arm (7). The upper side of the spring seat (8) is elastically connected to the lower surface of the pressure plate (4) through a buffer spring (9). Two rollers (10) are rotatably connected to both sides of one end of the swing arm (7).

3. The crack reinforcement device for roads and bridges according to claim 1, characterized in that, The two end frames (1) are rotatably connected by multiple fixing bolts (16) at equal intervals on their lower sides.

4. A crack reinforcement device for roads and bridges according to claim 2, characterized in that, Each of the rollers (10) is fitted with a rubber sleeve on its outer side.

5. A crack reinforcement device for roads and bridges according to claim 4, characterized in that, The support member (2) is a flat plate structure, and the bottom end of the side flap (5) is in contact with the top of the flat plate structure.

Images