Steel box girder of steel structure bridge

Abstract

The steel box girder of the steel structure bridge comprises a steel box girder body, the left side and the right side of the steel box girder body are each provided with an anti-collision mechanism, each anti-collision mechanism comprises a first installation groove, a first guide rod, a second installation groove and a second guide rod, the two ends of the outer surface of each first guide rod are each sleeved with a first sliding sleeve, and each first sliding sleeve is sleeved with a second sliding sleeve. By arranging an anti-collision mechanism, when an anti-collision plate is collided, the inward impact force of the anti-collision plate drives an elastic metal sheet to move towards the inner side, so that the elastic metal sheet drives a second sliding sleeve to slide on the two sides of a second guide rod to stretch and extrude a buffer spring, and meanwhile, a U-shaped plate also drives a swing rod to swing due to the impact force; the swing rods drive the first sliding sleeves to slide on the two sides of the first guide rods, the reset springs are stretched and extruded, collision force can be effectively dispersed and absorbed, the impact degree generated by collision is reduced, and the stability of the steel box girder after collision is kept to a certain degree.

Description

Technical Field

[0001] The utility model relates to a steel box girder of a steel structure bridge, belonging to the technical field of steel box girders. Background Art

[0002] Due to its excellent load-bearing capacity and overall stability, the steel box girder is widely used in long-span bridges. Its main function is to bear various loads on the bridge deck and effectively transfer these loads to the bridge piers or abutments to ensure the safe and reliable operation of the bridge.

[0003] A Chinese published patent (Publication No.: CN 219586543 U) discloses a steel box girder of a steel structure bridge, including a top plate of the bridge steel box girder. A web is fixedly connected to the bottom of the top plate of the bridge steel box girder. A bottom plate is fixedly connected to the bottom of the web. The web and the bottom plate together form a box-shaped space. A longitudinal partition is fixedly connected to the top of the bottom plate. The advantages of the utility model are as follows: Embedded bolts are welded in the space inside the web, and then a fixing plate and a gasket are installed, and the nut is tightened. Subsequently, an anti-arch rib plate is welded. The end of the anti-arch rib plate is welded to the fixing plate. A large number of anti-arch rib plates form the inner rib plate inside the web. The anti-arch rib plate can improve the overall strength of the steel box girder and can resist the arching and bending and deformation of the top plate of the bridge steel box girder with its own strength. On the premise of ensuring less steel consumption, it plays a role in improving the connection strength and support reinforcement of the steel box girder, and solves the problems existing in the prior art;

[0004] Although the above patent plays a role in improving the connection strength and support reinforcement of the steel box girder, there are still certain defects. Since the steel box girder is generally used in bridges with large spans, as an important structure of the bridge, it plays a crucial role in modern bridge construction. During use, the steel box girder of the bridge may be accidentally collided. When the steel box girder is collided, the collision force may cause damage to the coating, anti-corrosion layer or protective layer on the surface of the steel box girder, or even cracking, which may increase the risk of aging of the steel box girder and thus affect the safety and stability of the bridge.

[0005] Therefore, a steel box girder of a steel structure bridge is proposed. Summary of the Utility Model

[0006] In view of this, the utility model provides a steel box girder of a steel structure bridge to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the utility model is realized as follows: A steel box girder of a steel structure bridge, including a steel box girder body, anti-collision mechanisms are provided on both the left and right sides of the steel box girder body. The anti-collision mechanism includes a first installation groove, a first guide rod, a second installation groove, and a second guide rod. Both ends of the outer surface of the first guide rod are sleeved with first sliding sleeves. A return spring is fixedly connected to the inner side of the first sliding sleeve. A first fixing block is fixedly connected to the outer side of the first sliding sleeve. A swing rod is movably connected to the inner side of the first fixing block through a bearing. A second fixing block is movably connected to the outer side of the swing rod through a bearing. A U-shaped plate is fixedly connected to the outer side of the second fixing block. Both ends of the outer surface of the second guide rod are sleeved with second sliding sleeves. Buffer springs are fixedly connected to the inner sides of the two second sliding sleeves. An elastic metal sheet is fixedly connected to the outer sides of the two second sliding sleeves. An anti-collision plate is fixedly connected to the outer side of the elastic metal sheet.

[0008] Further preferably, the first installation grooves are opened at the upper and lower ends on both the left and right sides of the steel box girder body, and the first guide rods are fixedly connected to the inner sides of the first installation grooves.

[0009] Further preferably, the second installation grooves are opened at the inner sides of the inner cavities of the U-shaped plates, and the second guide rods are fixedly connected to the inner sides of the second installation grooves.

[0010] Further preferably, sliding grooves are opened on both the upper and lower sides of the inner cavity of the first installation groove. Sliding blocks are fixedly connected to both the upper and lower sides of the first sliding sleeve. The outer sides of the sliding blocks are slidably connected to the inner cavities of the sliding grooves.

[0011] Further preferably, a shock-absorbing spring is fixedly connected to the outer side of the first sliding sleeve, and the outer side of the shock-absorbing spring is fixedly connected to the inner side of the first installation groove.

[0012] Further preferably, a guide block is fixedly connected to the bottom of the second sliding sleeve. A guide groove is opened at the bottom of the second installation groove. The bottom of the guide block is slidably connected to the inner cavity of the guide groove.

[0013] Further preferably, a tension spring is fixedly connected to the outer side of the second sliding sleeve, and the outer side of the tension spring is fixedly connected to the inner side of the second installation groove.

[0014] Further preferably, a plurality of sleeves arranged at equal intervals are fixedly connected to the middle ends on both the left and right sides of the steel box girder body. A rigid spring is fixedly connected to the inner side of the inner cavity of the sleeve. A movable block is fixedly connected to the outer side of the rigid spring. A plurality of support legs arranged at equal intervals are fixedly connected to the middle ends on the inner sides of the U-shaped plates. The support legs and the movable blocks are fixedly connected. Rectangular blocks are fixedly connected to the outer sides of the movable blocks. Rectangular grooves are opened at the inner sides of the inner cavities of the sleeves. The outer sides of the rectangular blocks are slidably connected to the inner cavities of the rectangular grooves.

[0015] In the embodiment of the present utility model, due to the adoption of the above technical solutions, it has the following advantages:

[0016] 1. By setting the anti-collision mechanism in the present utility model, when the anti-collision plate is collided, the impact force inward of the anti-collision plate drives the elastic metal sheet to move inward, causing the elastic metal sheet to drive the second sliding sleeve to slide on both sides of the second guiding rod, stretching and squeezing the buffer spring. At the same time, the U-shaped plate also drives the swing rod to swing due to the impact force, causing the swing rod to drive the first sliding sleeve to slide on both sides of the first guiding rod, stretching and squeezing the reset spring. It can effectively disperse and absorb the collision force, reduce the impact degree generated by the collision, and maintain the stability of the steel box girder to a certain extent after being collided.

[0017] 2. By setting the first installation groove in the present utility model, it is convenient to install the first guiding rod and plays a role in installation and fixation. By setting the second installation groove, it is convenient to install the second guiding rod and plays a role in convenient installation. By setting the chute and the slider, the stability of the first sliding sleeve during movement can be improved. By setting the shock-absorbing spring, the buffering effect of the first sliding sleeve can be improved. By setting the guiding block and the guiding groove, the stability of the second sliding sleeve during movement can be improved. By setting the stretching spring, the buffering effect of the second sliding sleeve can be improved. By setting the hard spring, the movable block and the support leg, the impact force inward of the U-shaped plate can drive the support leg and the movable block to squeeze the hard spring for buffering and shock absorption, further reducing the transmission of the impact force.

[0018] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments and features, by referring to the drawings and the following detailed description, further aspects, embodiments and features of the present utility model will be readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic front view three-dimensional structure diagram of the present utility model;

[0021] Figure 2 It is a schematic bottom structure diagram of the present utility model;

[0022] Figure 3 It is a schematic structure diagram of the anti-collision mechanism of the present utility model;

[0023] Figure 4 Schematic cross-sectional structure diagram of the U-shaped plate of the present utility model;

[0024] Figure 5 Schematic cross-sectional structure diagram of the sleeve of the present utility model.

[0025] Reference numerals: 1, steel box girder body; 2, anti-collision mechanism; 201, first installation groove; 202, first guide rod; 203, first sliding sleeve; 204, return spring; 205, first fixing block; 206, swing rod; 207, second fixing block; 208, U-shaped plate; 209, second installation groove; 210, second guide rod; 211, second sliding sleeve; 212, buffer spring; 213, elastic metal sheet; 214, anti-collision plate; 3, chute; 4, slider; 5, shock-absorbing spring; 6, guide block; 7, guide groove; 8, tension spring; 9, sleeve; 10, rigid spring; 11, movable block; 12, support leg; 13, rectangular block; 14, rectangular groove. Detailed implementation manners

[0026] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and descriptions are considered to be exemplary in nature rather than restrictive.

[0027] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0028] Embodiment 1

[0029] As Figures 1-5 shown, an embodiment of the present utility model provides a steel box girder of a steel structure bridge, including a steel box girder body 1. Anti-collision mechanisms 2 are arranged on both the left and right sides of the steel box girder body 1. The anti-collision mechanism 2 includes a first installation groove 201, a first guide rod 202, a second installation groove 209 and a second guide rod 210. Both ends of the outer surface of the first guide rod 202 are sleeved with first sliding sleeves 203. A return spring 204 is fixedly connected to the inner side of the first sliding sleeve 203. A first fixing block 205 is fixedly connected to the outer side of the first sliding sleeve 203. The inner side of the first fixing block 205 is movably connected with a swing rod 206 through a bearing. The outer side of the swing rod 206 is movably connected with a second fixing block 207 through a bearing. A U-shaped plate 208 is fixedly connected to the outer side of the second fixing block 207. Both ends of the outer surface of the second guide rod 210 are sleeved with second sliding sleeves 211. Buffer springs 212 are fixedly connected to the inner sides of the two second sliding sleeves 211. An elastic metal sheet 213 is fixedly connected to the outer sides of the two second sliding sleeves 211. An anti-collision plate 214 is fixedly connected to the outer side of the elastic metal sheet 213.

[0030] By setting up the anti-collision mechanism 2, when the anti-collision plate 214 is collided, the inward impact force of the anti-collision plate 214 drives the elastic metal sheet 213 to move inward, causing the elastic metal sheet 213 to drive the second sliding sleeve 211 to slide on both sides of the second guiding rod 210, stretching and squeezing the buffer spring 212. At the same time, the U-shaped plate 208 also drives the swing rod 206 to swing due to the impact force, causing the swing rod 206 to drive the first sliding sleeve 203 to slide on both sides of the first guiding rod 202, stretching and squeezing the reset spring 204. This can effectively disperse and absorb the collision force, reduce the impact degree caused by the collision, and maintain the stability of the steel box girder to a certain extent after being collided.

[0031] Embodiment 2

[0032] In one embodiment, the first installation groove 201 is opened at the upper and lower ends on the left and right sides of the steel box girder body 1. The first guiding rod 202 is fixedly connected to the inner side of the first installation groove 201. The second installation groove 209 is opened at the inner side of the inner cavity of the U-shaped plate 208. The second guiding rod 210 is fixedly connected to the inner side of the second installation groove 209. Sliding grooves 3 are opened on both the upper and lower sides of the inner cavity of the first installation groove 201. Sliding blocks 4 are fixedly connected to both the upper and lower sides of the first sliding sleeve 203. The outer sides of the sliding blocks 4 are slidably connected to the inner cavity of the sliding groove 3. A shock-absorbing spring 5 is fixedly connected to the outer side of the first sliding sleeve 203. The outer side of the shock-absorbing spring 5 is fixedly connected to the inner side of the first installation groove 201. A guiding block 6 is fixedly connected to the bottom of the second sliding sleeve 211. A guiding groove 7 is opened at the bottom of the second installation groove 209. The bottom of the guiding block 6 is slidably connected to the inner cavity of the guiding groove 7. A stretching spring 8 is fixedly connected to the outer side of the second sliding sleeve 211. The outer side of the stretching spring 8 is fixedly connected to the inner side of the second installation groove 209. A plurality of sleeves 9 arranged at equal intervals are fixedly connected to the middle ends on the left and right sides of the steel box girder body 1. A rigid spring 10 is fixedly connected to the inner side of the inner cavity of the sleeve 9. A movable block 11 is fixedly connected to the outer side of the rigid spring 10. A plurality of support legs 12 arranged at equal intervals are fixedly connected to the middle ends on the inner side of the U-shaped plate 208. The support legs 12 and the movable block 11 are fixedly connected. Rectangular blocks 13 are fixedly connected to the outer sides of the movable blocks 11. Rectangular grooves 14 are opened on the inner sides of the inner cavities of the sleeves 9. The outer sides of the rectangular blocks 13 are slidably connected to the inner cavities of the rectangular grooves 14.

[0033] By providing the first installation groove 201, the installation of the first guide rod 202 can be facilitated, playing a role in installation and fixation. By providing the second installation groove 209, the installation of the second guide rod 209 can be facilitated, playing a role in facilitating installation. By providing the chute 3 and the slider 4, the stability of the first sliding sleeve 203 during movement can be improved. By providing the shock-absorbing spring 5, the buffering effect of the first sliding sleeve 203 can be improved. By providing the guide block 6 and the guide groove 7, the stability of the second sliding sleeve 211 during movement can be improved. By providing the tension spring 8, the buffering effect of the second sliding sleeve 211 can be improved. By providing the rigid spring 10, the movable block 11 and the support leg 12, the impact force of the U-shaped plate 208 towards the inside can drive the support leg 12 and the movable block 11 to squeeze the rigid spring 10 for buffering and shock absorption, further reducing the transmission of the impact force.

[0034] When the present utility model is in operation: when the anti-collision plate 214 is collided, the impact force of the anti-collision plate 214 towards the inside will drive the elastic metal sheet 213 to move towards the inside, causing the elastic metal sheet 213 to drive the second sliding sleeve 211 to slide on both sides of the second guide rod 210, stretching and squeezing the buffer spring 212 and the shock-absorbing spring 5 to generate deformation. At the same time, the U-shaped plate 208 will also drive the swing rod 206 to swing due to the impact force, causing the swing rod 206 to drive the first sliding sleeve 203 to slide on both sides of the first guide rod 202, stretching and squeezing the return spring 204 and the tension spring 8 to generate deformation. And when the U-shaped plate 208 is subjected to the impact force, it will squeeze the rigid spring 10 through the support leg 12 and the movable block 11, causing the rigid spring 10 to deform, further reducing the transmission of the impact force, effectively dispersing and absorbing the collision force, and maintaining the stability of the steel box girder to a certain extent after being collided.

[0035] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A steel box girder of a steel structure bridge, characterized in that: The invention comprises a steel box girder body (1), wherein both left and right sides of the steel box girder body (1) are provided with anti-collision mechanisms (2), wherein the anti-collision mechanisms (2) comprise a first installation groove (201), a first guide rod (202), a second installation groove (209) and a second guide rod (210), wherein both ends of the outer surface of the first guide rod (202) are sleeved with a first sliding sleeve (203), a return spring (204) is fixedly connected to the inner side of the first sliding sleeve (203), a first fixing block (205) is fixedly connected to the outer side of the first sliding sleeve (203), and the inner side of the first fixing block (205) is provided with a first guide rod (210). The bearing is movably connected to a swing rod (206); the outer side of the swing rod (206) is movably connected to a second fixed block (207) via a bearing; the outer side of the second fixed block (207) is fixedly connected to a U-shaped plate (208); both ends of the outer surface of the second guide rod (210) are sleeved with second sliding sleeves (211); the inner sides of the two second sliding sleeves (211) are fixedly connected to a buffer spring (212); the outer sides of the two second sliding sleeves (211) are fixedly connected to an elastic metal sheet (213); and the outer side of the elastic metal sheet (213) is fixedly connected to an anti-collision plate (214).

2. The steel box girder of a steel structure bridge according to claim 1, characterized in that: The first installation groove (201) is provided at upper and lower ends of the left and right sides of the steel box beam body (1), and the first guide rod (202) is fixedly connected to the inner side of the first installation groove (201).

3. The steel box girder of a steel structure bridge according to claim 1, characterized in that: The second installation groove (209) is formed on the inner side of the inner cavity of the U-shaped plate (208), and the second guide rod (210) is fixedly connected to the inner side of the second installation groove (209).

4. The steel box girder of a steel structure bridge according to claim 1, characterized in that: Slide grooves (3) are provided on both upper and lower sides of the inner cavity of the first installation groove (201), and sliding blocks (4) are fixedly connected to both upper and lower sides of the first sliding sleeve (203), and the outer side of the sliding block (4) is slidably connected to the inner cavity of the slide groove (3).

5. The steel box girder of a steel structure bridge according to claim 1, characterized in that: A shock absorbing spring (5) is fixedly connected to the outer side of the first sliding sleeve (203), and the outer side of the shock absorbing spring (5) is fixedly connected to the inner side of the first installation groove (201).

6. The steel box girder of a steel structure bridge according to claim 1, characterized in that: The bottom of the second sliding sleeve (211) is fixedly connected to a guide block (6), the bottom of the second mounting groove (209) is provided with a guide groove (7), and the bottom of the guide block (6) is slidably connected to the inner cavity of the guide groove (7).

7. The steel box girder of a steel structure bridge according to claim 1, characterized in that: A tension spring (8) is fixedly connected to the outer side of the second sliding sleeve (211), and the outer side of the tension spring (8) is fixedly connected to the inner side of the second installation groove (209).

8. The steel box girder of a steel structure bridge according to claim 1, characterized in that: The middle ends of the left and right sides of the steel box girder body (1) are fixedly connected to a plurality of sleeves (9) arranged at equal intervals, the inner side of the inner cavity of the sleeve (9) is fixedly connected to a hard spring (10), the outer side of the hard spring (10) is fixedly connected to a movable block (11), the middle end of the inner side of the U-shaped plate (208) is fixedly connected to a plurality of support legs (12) arranged at equal intervals, the support legs (12) and the movable block (11) are fixedly connected, the outer side of the movable block (11) is fixedly connected to a rectangular block (13), the inner side of the inner cavity of the sleeve (9) is provided with a rectangular groove (14), and the outer side of the rectangular block (13) is slidably connected to the inner cavity of the rectangular groove (14).

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