Large-span bridge steel structure connecting fastener

Abstract

The utility model relates to the technical field of steel structure bridges, and discloses a large-span bridge steel structure connecting fastener which comprises a left connecting disc and a right connecting disc, a left connecting steel body is fixed on the left connecting disc, a right connecting steel body is fixed on the right connecting disc, and a bolt assembly is arranged between the left connecting disc and the right connecting disc. A protection box is fixed to the outer side end face of the left connecting disc and the outer side end face of the right connecting disc, an outer connecting sleeve is fixed to the inner side end face of the left connecting disc, a fixed plate is fixed to the inner side end face of the right connecting disc, a rubber block is arranged between the left connecting disc and the right connecting disc, and communicating grooves are formed in the left connecting disc and the right connecting disc. According to the large-span bridge steel structure connecting fastener, the left connecting disc and the right connecting disc can be connected and fixed through the bolt assembly, the axial tension borne by the bolt assembly can be reduced through the outer connecting sleeve and the fixed plate, and therefore the left connecting disc and the right connecting disc can be connected and fixed more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure bridges, in particular to a connecting fastener for a long-span bridge steel structure. Background Art

[0002] Steel structure bridges are bridges whose main load-bearing structures are made of steel, namely steel structure bridges, steel bridges, and prefabricated steel bridges have been widely used. Steel structure bridges have the advantages of uniform material, high reliability, high strength, light weight, weldability, easy mechanized manufacturing, convenient installation and short construction period.

[0003] Application number CN202221198414.6 discloses a long-span bridge steel structure connection fastener, comprising two connecting plates and multiple connecting mechanisms. The two connecting plates are coaxial and sealed, and the multiple connecting mechanisms are evenly distributed circumferentially around the axis of the connecting plates. The connecting mechanism includes a bolt assembly and two sealing assemblies, and the sealing assemblies correspond to the connecting plates one by one. The bolt assembly includes a bolt, a nut, and two bolt holes, and the two bolt holes are respectively provided on the two connecting plates. One end of the bolt hole is provided with a countersunk hole, which is located on the side of the connecting plate away from the contact surface. The bolt passes through the two bolt holes in sequence.

[0004] When the above patented structure is in use, the two connecting plates are mainly fixedly connected by bolts and nuts, and then the bridge steels on the two connecting plates are fixedly connected. However, when the two bridge steels are connected, they may be subjected to an axial reverse force, and the two bridge steels will tend to pull the two connecting plates to move in opposite directions. Moreover, the above patented structure does not first connect and fix the two connecting plates, making it difficult for the bolts and nuts to tighten the two connecting plates. Moreover, the above patented structure is only connected by bolts and nuts, which makes the bolts and nuts subjected to a large reverse tensile force, making it inconvenient to connect the two connecting plates more firmly. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a connecting fastener for a large-span bridge steel structure, which solves the problem that when connecting the steel structure on a steel structure bridge, it is inconvenient to first connect and fix the connecting plate on the steel structure, which causes the bolts and nuts to be subjected to a large reverse tension, making it inconvenient to connect the two connecting plates more firmly.

[0006] In order to realize the purpose of connecting the steel structure on the above-mentioned steel structure bridge, it is convenient to first connect and fix the connecting plate on the steel structure, so that the reverse tension of the bolt and nut is small, which is convenient for connecting the two connecting plates more firmly. The utility model provides the following technical solutions: a long-span bridge steel structure connecting fastener, comprising a left connecting plate and a right connecting plate, the left connecting plate being fixed with a left connecting steel body, the right connecting steel body being fixed with a right connecting plate, a bolt assembly being provided between the left connecting plate and the right connecting plate, a protective box being fixed on the outer end faces of the left connecting plate and the right connecting plate, an outer connecting sleeve being fixed on the inner end face of the left connecting plate, and a fixed plate being fixed on the inner end face of the right connecting plate, a rubber block being provided between the left connecting plate and the right connecting plate, and a connecting groove being provided on the left connecting plate and the right connecting plate;

[0007] The end surface of the protection box is provided with a limiting groove, a protection cover is slidably provided inside the protection box, a limiting plate is fixed to one end of the outer side of the protection cover, and the end surface of the limiting plate is provided with a protection cover groove;

[0008] An outer connecting cavity is formed inside the outer connecting sleeve, and the gap between two adjacent groups of the outer connecting sleeves forms an outer through groove. An inner connecting sleeve is fixed to the inner end surface of the left connecting disk, and the gap between two adjacent groups of the inner connecting sleeves forms an inner through groove. The gap between the inner connecting sleeve and the left connecting disk forms an inner connecting cavity.

[0009] An outer connecting plate is fixed on the fixed plate, a fixed shaft is fixed on the inner end surface of the right connecting plate, and an inner connecting plate is fixed on the surface of the fixed shaft;

[0010] The gap between the left connecting plate and the right connecting plate forms a sealing groove, the outer surface of the rubber block is provided with a rubber block groove, the end surface of the rubber block is fixed with a rubber strip, and the end surfaces of the left connecting plate and the right connecting plate are provided with a rubber groove.

[0011] Preferably, the left connecting plate, the right connecting plate, the protection box, the external connecting sleeve and the external connecting plate are all provided with connecting grooves, and the bolt assembly consists of bolts and nuts, and the bolt assembly passes through the connecting grooves.

[0012] Preferably, three groups of the protection boxes are equidistantly arranged along the circumferential direction of the left connecting disk and the right connecting disk, and the limiting plates are connected to the protection boxes on the adjacent side.

[0013] Preferably, the bolt assembly is located on the inner side of the protective cover and does not contact the protective cover, and the limiting plate is movably engaged with the limiting groove.

[0014] Preferably, three groups of the outer connecting sleeves are equidistantly arranged along the circumferential direction of the left connecting disk, and three groups of the outer connecting plates are equidistantly arranged along the circumferential direction of the right connecting disk, and the outer connecting plates are adapted to the outer connecting cavity.

[0015] Preferably, the arc length of the outer through groove is greater than the sum of the arc lengths of the fixed plate and the outer connecting plate.

[0016] Preferably, the inner connecting plate is adapted to the inner connecting cavity, and the arc length of the inner through groove is greater than the arc length of the inner connecting plate.

[0017] Preferably, the sealing groove is formed by the left connecting plate, the right connecting plate and the gap between the outer connecting sleeves on both sides and the fixed plate, the rubber block is adapted to the sealing groove, and the rubber strip is adapted to the rubber groove.

[0018] Compared with the prior art, the present invention provides a long-span bridge steel structure connection fastener, which has the following beneficial effects:

[0019] 1. The long-span bridge steel structure connection fastener is configured to connect the outer connecting plate with the outer connecting sleeve and the inner connecting plate with the inner connecting sleeve by rotating the outer connecting plate from the outer through groove into the outer connecting cavity and rotating the inner connecting plate from the inner through groove into the inner connecting cavity. Therefore, the left connecting plate and the right connecting plate can be axially connected and fixed from the inside through the outer connecting plate and the outer connecting sleeve, and the left connecting plate and the right connecting plate can be axially connected and fixed from the outside through the inner connecting plate and the inner connecting sleeve. Then, the bolt assembly is inserted into the connecting groove, and the left connecting plate and the right connecting plate can be locked and fixed by the bolt assembly. After the left connecting plate and the right connecting plate are axially fixed, it is easier to fix them again by the bolt assembly. The axial tension on the bolt assembly can be reduced by the outer connecting plate and the outer connecting sleeve as well as the inner connecting plate and the inner connecting sleeve.

[0020] 2. The long-span bridge steel structure connection fasteners seal the port of the protection box by rotating the protective cover, and the limit plate is movably connected to the inside of the limit groove, so that the protective cover can be fixed to the protection box, and the bolt assembly is sealed inside the protection box to prevent the bolt assembly from being directly exposed to the outside and corroded by rainwater, which reduces the service life of the bolt assembly. Then, the rubber block is inserted into the sealing groove, and the rubber block can be movably connected to the inside of the sealing groove through the rubber strip and the rubber groove. The gaps between the left connecting plate, the right connecting plate and the outer connecting sleeves and the fixed plate on both sides can be sealed through the rubber block to prevent rainwater from entering the gap and corroding the internal structural components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a combined diagram of the left connecting plate and the right connecting plate of the utility model structure;

[0023] Figure 3 This is an exploded view of the left and right connecting plates of the utility model structure;

[0024] Figure 4 This is a schematic diagram of the left connecting plate of the utility model structure;

[0025] Figure 5 This is a schematic diagram of the right connecting plate of the utility model structure.

[0026] Among them: 1. Left connecting plate; 2. Right connecting plate; 3. Left connecting steel body; 4. Right connecting steel body; 5. Bolt assembly; 6. Protection box; 61. Limiting groove; 62. Protection cover; 63. Limiting plate; 64. Protection cover groove; 7. External connecting sleeve; 71. External connecting cavity; 72. External through groove; 73. Internal connecting sleeve; 74. Internal through groove; 75. Internal connecting cavity; 8. Fixed plate; 81. External connecting plate; 82. Fixed shaft; 83. Internal connecting plate; 9. Rubber block; 91. Sealing groove; 92. Rubber block groove; 93. Rubber strip; 94. Rubber groove; 10. Connecting groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-5 The utility model provides a long-span bridge steel structure connection fastener, including a left connecting plate 1 and a right connecting plate 2, a left connecting steel body 3 is fixed on the left connecting plate 1, and a right connecting steel body 4 is fixed on the right connecting plate 2, a bolt assembly 5 is provided between the left connecting plate 1 and the right connecting plate 2, a protective box 6 is fixed to the outer end faces of the left connecting plate 1 and the right connecting plate 2, an outer connecting sleeve 7 is fixed to the inner end face of the left connecting plate 1, and a fixed plate 8 is fixed to the inner end face of the right connecting plate 2, a rubber block 9 is provided between the left connecting plate 1 and the right connecting plate 2, and a connecting groove 10 is opened on the left connecting plate 1 and the right connecting plate 2;

[0029] The end surface of the protection box 6 is provided with a limit groove 61, and a protection cover 62 is slidably provided inside the protection box 6. A limit plate 63 is fixed to one end of the outer side of the protection cover 62. The end surface of the limit plate 63 is provided with a protection cover groove 64, through which a finger can open the protection cover 62.

[0030] An outer connecting cavity 71 is formed inside the outer connecting sleeve 7. The gap between two adjacent sets of outer connecting sleeves 7 forms an outer through groove 72. An inner connecting sleeve 73 is fixed to the inner end surface of the left connecting plate 1. The gap between two adjacent sets of inner connecting sleeves 73 forms an inner through groove 74. The gap between the inner connecting sleeve 73 and the left connecting plate 1 forms an inner connecting cavity 75.

[0031] An outer connecting plate 81 is fixed on the fixed plate 8, a fixed shaft 82 is fixed on the inner end surface of the right connecting plate 2, and an inner connecting plate 83 is fixed on the surface of the fixed shaft 82;

[0032] A sealing groove 91 is formed in the gap between the left connecting plate 1 and the right connecting plate 2, and a rubber block groove 92 is provided on the outer surface of the rubber block 9, through which the rubber block 9 can be taken out by fingers. A rubber strip 93 is fixed to the end face of the rubber block 9, and a rubber groove 94 is provided on the end faces of the left connecting plate 1 and the right connecting plate 2. By first connecting the left connecting plate 1 with the right connecting plate 2, the left connecting plate 1 and the right connecting plate 2 can no longer move axially, and then the bolt assembly 5 can be used to more conveniently connect and fix the left connecting plate 1 and the right connecting plate 2, thereby preventing the left connecting plate 1 and the right connecting plate 2 from being difficult to fix due to the axial reverse tension.

[0033] Furthermore, connecting grooves 10 are provided on the left connecting plate 1, the right connecting plate 2, the protective box 6, the external connecting sleeve 7 and the external connecting plate 81. The bolt assembly 5 is composed of bolts and nuts. The bolt assembly 5 passes through the connecting grooves 10, so that the bolt assembly 5 can fix the left connecting plate 1 and the right connecting plate 2 through the connecting grooves 10.

[0034] Furthermore, three groups of protective boxes 6 are equidistantly arranged along the circumferential direction of the left connecting disk 1 and the right connecting disk 2. The limiting plate 63 is connected to the protective box 6 on the adjacent side. When the protective cover 62 drives the limiting plate 63 to rotate, the protective box 6 on the adjacent side can limit the limiting plate 63 to prevent the protective cover 62 from separating from the protective box 6.

[0035] Furthermore, the bolt assembly 5 is located on the inner side of the protective cover 62 and does not contact the protective cover 62. The limiting plate 63 is movably engaged with the limiting groove 61. The two ends of the bolt assembly 5 are located inside the protective box 6 on both sides. When the protective cover 62 is rotated, there will be no interference with the bolt assembly 5. The limiting plate 63 is movably engaged with the limiting groove 61 to facilitate fixing the protective cover 62 to the protective box 6.

[0036] Furthermore, three groups of external connecting sleeves 7 are equidistantly arranged along the circumferential direction of the left connecting disk 1, and three groups of external connecting plates 81 are equidistantly arranged along the circumferential direction of the right connecting disk 2. The external connecting plates 81 are adapted to the external connecting cavity 71, so that the left connecting disk 1 and the right connecting disk 2 can be axially connected and fixed from the outside through the external connecting sleeves 7 and the external connecting plates 81.

[0037] Furthermore, the arc length of the outer through groove 72 is greater than the sum of the arc lengths of the fixed plate 8 and the outer connecting plate 81, so that the outer connecting plate 81 can be placed in the outer through groove 72, so that the outer connecting plate 81 can be rotated from the outer through groove 72 to the outer connecting cavity 71.

[0038] Furthermore, the inner connecting plate 83 is adapted to the inner connecting cavity 75 , and the arc length of the inner through groove 74 is greater than the arc length of the inner connecting plate 83 , so that the inner connecting plate 83 can be placed in the inner through groove 74 , so that the inner connecting plate 83 can be rotated from the inner through groove 74 to the inner connecting cavity 75 .

[0039] Furthermore, the sealing groove 91 is formed by the gap between the left connecting plate 1, the right connecting plate 2 and the outer connecting sleeves 7 and the fixed plate 8 on both sides. The rubber block 9 is adapted to the sealing groove 91, and the rubber strip 93 is adapted to the rubber groove 94. The rubber block 9 can seal the gap between the left connecting plate 1, the right connecting plate 2 and the outer connecting sleeves 7 and the fixed plate 8 on both sides to prevent rainwater from entering the gap and corroding the internal structural components.

[0040] When in use, the outer connecting plate 81 is placed in the outer through groove 72, the inner connecting plate 83 is placed in the inner through groove 74, and then the left connecting plate 1 and the right connecting plate 2 are rotated in opposite directions at the same time. At this time, the outer connecting plate 81 can be rotated from the outer through groove 72 to the outer connecting cavity 71, and the inner connecting plate 83 can be rotated from the inner through groove 74 to the inner connecting cavity 75, so that the outer connecting plate 81 is connected to the outer connecting sleeve 7, and the inner connecting plate 83 is connected to the inner connecting sleeve 73. Therefore, the left connecting disc 1 and the right connecting disc 2 can be connected from the inside through the outer connecting plate 81 and the outer connecting sleeve 7. The connecting plate 2 is axially connected and fixed, and the left connecting plate 1 and the right connecting plate 2 can be axially connected and fixed from the outside through the inner connecting plate 83 and the inner connecting sleeve 73. After the left connecting plate 1 and the right connecting plate 2 are axially connected and fixed, the bolt assembly 5 is inserted into the connecting groove 10, and the left connecting plate 1 and the right connecting plate 2 can be locked and fixed through the bolt assembly 5, so that the left connecting plate 1 and the right connecting plate 2 can no longer rotate with each other. Therefore, after the left connecting plate 1 and the right connecting plate 2 are axially fixed, it is easier to pass the bolt The assembly 5 is then fixed, and the axial tension of the bolt assembly 5 can be reduced by the outer connecting plate 81 and the outer connecting sleeve 7 as well as the inner connecting plate 83 and the inner connecting sleeve 73. In addition, when the left connecting plate 1 and the right connecting plate 2 are fixed by the bolt assembly 5, the left connecting steel body 3 and the right connecting steel body 4 can be connected and fixed, and then the protective cover 62 is rotated to seal the port of the protection box 6. At this time, the limit plate 63 is movably engaged with the inside of the limit groove 61, so that the protective cover 62 can be fixed to the protection box 6, and the bolt assembly 5 is sealed inside the protection box 6 to prevent the bolt assembly 5 from being directly exposed to the outside and corroded by rainwater, thereby reducing the service life of the bolt assembly 5. Then, the rubber block 9 is inserted into the sealing groove 91, and the rubber block 93 and the rubber groove 94 can be movably engaged with the inside of the sealing groove 91. The gaps between the left connecting plate 1, the right connecting plate 2 and the outer connecting sleeves 7 and the fixed plate 8 on both sides can be sealed by the rubber block 9 to prevent rainwater from entering the gap and corroding the internal structural components.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting fastener for a long-span bridge steel structure, comprising a left connecting plate (1) and a right connecting plate (2), characterized in that: A left connecting steel body (3) is fixed on the left connecting plate (1), a right connecting steel body (4) is fixed on the right connecting plate (2), a bolt assembly (5) is provided between the left connecting plate (1) and the right connecting plate (2), a protection box (6) is fixed to the outer end faces of the left connecting plate (1) and the right connecting plate (2), an outer connecting sleeve (7) is fixed to the inner end face of the left connecting plate (1), a fixed plate (8) is fixed to the inner end face of the right connecting plate (2), a rubber block (9) is provided between the left connecting plate (1) and the right connecting plate (2), and a connecting groove (10) is provided on the left connecting plate (1) and the right connecting plate (2); The end surface of the protection box (6) is provided with a limiting groove (61), a protection cover (62) is slidably provided inside the protection box (6), a limiting plate (63) is fixed to one end of the outer side of the protection cover (62), and the end surface of the limiting plate (63) is provided with a protection cover groove (64); An outer connecting cavity (71) is formed inside the outer connecting sleeve (7), and the gap between two adjacent groups of the outer connecting sleeves (7) forms an outer through groove (72). An inner connecting sleeve (73) is fixed to the inner end surface of the left connecting disk (1), and the gap between two adjacent groups of the inner connecting sleeves (73) forms an inner through groove (74). The gap between the inner connecting sleeve (73) and the left connecting disk (1) forms an inner connecting cavity (75). An outer connecting plate (81) is fixed on the fixed plate (8), a fixed shaft (82) is fixed on the inner end surface of the right connecting plate (2), and an inner connecting plate (83) is fixed on the surface of the fixed shaft (82); A sealing groove (91) is formed in the gap between the left connecting plate (1) and the right connecting plate (2), a rubber block groove (92) is provided on the outer surface of the rubber block (9), a rubber strip (93) is fixed to the end surface of the rubber block (9), and a rubber groove (94) is provided on the end surfaces of the left connecting plate (1) and the right connecting plate (2).

2. The long-span bridge steel structure connecting fastener according to claim 1, characterized in that: The left connecting plate (1), the right connecting plate (2), the protection box (6), the external connecting sleeve (7), and the external connecting plate (81) are all provided with a connecting groove (10). The bolt assembly (5) is composed of a bolt and a nut, and the bolt assembly (5) passes through the connecting groove (10).

3. The long-span bridge steel structure connecting fastener according to claim 1, characterized in that: The protection boxes (6) are arranged in three groups at equal intervals along the circumferential direction of the left connecting disk (1) and the right connecting disk (2), and the limiting plate (63) is connected to the protection box (6) on the adjacent side.

4. The long-span bridge steel structure connecting fastener according to claim 1, characterized in that: The bolt assembly (5) is located inside the protective cover (62) and does not contact the protective cover (62), and the limiting plate (63) is movably engaged with the limiting groove (61).

5. The long-span bridge steel structure connecting fastener according to claim 1, characterized in that: The outer connecting sleeves (7) are arranged in three groups at equal intervals along the circumferential direction of the left connecting disk (1), and the outer connecting plates (81) are arranged in three groups at equal intervals along the circumferential direction of the right connecting disk (2). The outer connecting plates (81) are adapted to the outer connecting cavity (71).

6. The long-span bridge steel structure connecting fastener according to claim 1, characterized in that: The arc length of the outer through groove (72) is greater than the sum of the arc lengths of the fixed plate (8) and the outer connecting plate (81).

7. The long-span bridge steel structure connecting fastener according to claim 1, characterized in that: The inner connecting plate (83) is adapted to the inner connecting cavity (75), and the arc length of the inner through groove (74) is greater than the arc length of the inner connecting plate (83).

8. The long-span bridge steel structure connecting fastener according to claim 1, characterized in that: The sealing groove (91) is formed by the gap between the left connecting disc (1), the right connecting disc (2) and the outer connecting sleeves (7) on both sides and the fixed plate (8); the rubber block (9) is adapted to the sealing groove (91); and the rubber strip (93) is adapted to the rubber groove (94).

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