Displacement device for catwalk bearing cable of suspension bridge

Abstract

The utility model discloses a displacement device for a catwalk bearing cable of a suspension bridge, which comprises a catwalk handrail cable stand column, a catwalk bearing cable limiting component and a supporting base, the catwalk handrail cable stand column comprises a stand column main body, an upper stiffening plate, catwalk handrail cable fixing bolts and catwalk handrail cable round holes; the catwalk bearing cable limiting assembly comprises a pressing plate, a limiting piece and a connecting bolt, the limiting piece is composed of a single-cable limiting piece and a multi-cable limiting piece, and the supporting base comprises a main cross beam, a small longitudinal beam, a connecting rod, a connecting plate and a lower stiffening plate. By arranging the catwalk bearing cable limiting assembly, the horizontal distance between the catwalk bearing cables is limited, and the catwalk bearing cable displacement function is achieved. The device further has the advantages of being stable in stress, safe and reliable in structure, capable of providing effective limiting in the catwalk bearing cable displacement adjusting process, simple in structure, convenient to operate, capable of achieving rapid and stable adjustment of the catwalk bearing cable, high in practicability and wide in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension bridge catwalk construction, in particular to a displacement device for a load-bearing cable of a suspension bridge catwalk. Background Art

[0002] The catwalk is a construction platform for the main cable system of a suspension bridge, which is set under the main cable and parallel to the main cable. Conventional catwalk systems are usually set up with equal cross-sections for the entire bridge, and the catwalk load-bearing cables also need to be arranged at equal intervals. However, for special parts, such as when the cable saddle is arranged on the top of the tower of a suspension bridge, the distribution position of the catwalk load-bearing cables will conflict with the cable saddle, resulting in the width of the tower top structure being unable to meet the requirements for the catwalk load-bearing cables to be arranged according to the width of the equal cross-section. If the catwalk system with equal cross-sections for the entire bridge is designed according to the spacing of the catwalk load-bearing cables in the obstructed space, the space without load-bearing cables in the catwalk will increase, affecting the overall force and stability requirements of the catwalk. Therefore, it is necessary to study a displacement device for the load-bearing cables of the catwalk of a suspension bridge to solve the problem of changes in the spacing of the catwalk load-bearing cables. Summary of the invention

[0003] The utility model aims to provide a displacement device for a load-bearing cable of a catwalk of a suspension bridge, which can change the plane position of the load-bearing cable of the catwalk of the suspension bridge and ensure that the load-bearing cable of the catwalk is effectively displaced at a local position.

[0004] The purpose of the utility model is achieved in this way:

[0005] A displacement device for a catwalk load-bearing cable of a suspension bridge, characterized by comprising: a catwalk handrail cable, a catwalk load-bearing cable, a column body, an upper stiffening plate, bolts for fixing the catwalk handrail cable, a pressure plate, a limiter, a connecting bolt, a main crossbeam, a small longitudinal beam, a connecting rod, a connecting plate, a single-cable limiter, a multi-cable limiter, a catwalk handrail cable round hole, and a lower stiffening plate, wherein:

[0006] The four main columns are arranged in a rectangular shape. A main crossbeam is fixed between the bottoms of the two main columns on the vertical long sides facing each other front and back. A small longitudinal beam is fixed between the bottoms of the two main columns on the horizontal short sides facing each other left and right. A small longitudinal beam is fixed between the two main crossbeams. The four main columns, two main crossbeams and three small longitudinal beams together form a "sun" shaped frame.

[0007] A connecting plate is installed at the middle bottom of the three small longitudinal beams and at the bottom of 1 / 4 and 3 / 4 of the two main cross beams, respectively, and a connecting rod is installed between two adjacent connecting plates;

[0008] Three catwalk handrail cable circular holes are evenly spaced in the middle and upper part of each of the left and right opposite column bodies. The left and right ends of the catwalk handrail cable respectively pass through the two catwalk handrail cable circular holes on the same horizontal line, and are fixed to the column body together with the catwalk handrail cable bolts and matching nuts;

[0009] More than two single-cable limiters are evenly spaced on the left main crossbeam between two adjacent small longitudinal beams, and a multi-cable limiter is provided in the middle of the right main crossbeam between two adjacent small longitudinal beams. The number of slots on the multi-cable limiter, the number of single-cable limiters and the number of catwalk load-bearing cables are consistent. The left ends of more than two catwalk load-bearing cables are respectively placed in the slots of the multi-cable limiter on the right, and the right ends of more than two catwalk load-bearing cables are respectively placed in the slots of more than two single-cable limiters on the left. The pressure plate cover presses the catwalk load-bearing cables from above and covers the single-cable limiter and the multi-cable limiter. The connecting bolts pass through the pressure plate, the single-cable limiter and the multi-cable limiter from top to bottom and are then screwed into the main crossbeam to fix the pressure plate on the single-cable limiter, the multi-cable limiter and the main crossbeam, thereby fixing the more than two catwalk load-bearing cables between the two adjacent small longitudinal beams on the two main crossbeams, and upper limiting the catwalk load-bearing cables.

[0010] Preferably, an upper stiffening plate is fixed at each node position where a bolt of a fixed catwalk handrail cable is installed with the column body.

[0011] Preferably, a lower stiffening plate is fixed at the bottom of the node position between each main cross beam and a single column body.

[0012] Preferably, the bolts for fixing the catwalk handrail cables are U-shaped bolts.

[0013] The utility model comprises a catwalk handrail cable column, a catwalk load-bearing cable limiting assembly and a supporting base, wherein the catwalk handrail cable column comprises a column body, an upper stiffening plate, and bolts for fixing the catwalk handrail cables; the catwalk load-bearing cable limiting assembly comprises a pressing plate, a limiting piece, and a connecting bolt; the limiting piece consists of a single-cable limiting piece and a multi-cable limiting piece; and the supporting base comprises a main crossbeam, a small longitudinal beam, a connecting rod, a connecting plate and a lower stiffening plate. The catwalk handrail cable column fixes and limits the catwalk handrail cable by fixing the catwalk handrail cable bolts, and further firmly attaches the displacement device of the catwalk load-bearing cable to the catwalk system; the catwalk load-bearing cable limiting assembly controls and adjusts the plane position of the catwalk load-bearing cable through the slot formed by the catwalk load-bearing cable limiting assembly, and the catwalk load-bearing cable limiting assembly is fixed to the main crossbeam of the supporting base through connecting bolts, and the catwalk handrail cable column is fixed on all sides of the supporting base, finally forming a complete catwalk load-bearing cable displacement device; the supporting base is used to fix and support the catwalk load-bearing cable limiting assembly, and is the main force-bearing structure.

[0014] Compared with the prior art, the advantages of the utility model are as follows:

[0015] (1) By setting a limit assembly for the catwalk load-bearing cable, the horizontal spacing of the catwalk load-bearing cables is limited, thereby realizing the displacement function of the catwalk load-bearing cables;

[0016] (2) The catwalk load-bearing cable limit assembly is set on the main crossbeam of the support base, and the connecting bolts serve as an intermediate medium to transmit the horizontal force borne by the catwalk load-bearing cable limit assembly to the support base, which is convenient for installation and makes the structure more solid;

[0017] (3) The support base is the main load-bearing component in the structure. It bears the horizontal reaction force after the catwalk load-bearing cable line shape changes. At the same time, it ensures that the catwalk load-bearing cable is always in the same plane position, ensuring the unity and stability of the catwalk system, and plays the role of a structure that meets multiple purposes;

[0018] (4) The catwalk handrail cable columns are arranged around the supporting base, which can fix the catwalk handrail cable and firmly attach the displacement device of the entire catwalk load-bearing cable to the catwalk system;

[0019] (5) It has a simple structure, convenient operation and low cost, and can quickly and stably adjust the plane position of the catwalk load-bearing cable, which is highly practical and widely applicable;

[0020] (6) The force is stable and the structure is safe and reliable, which can provide effective limit for the catwalk load-bearing cable during displacement adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the front view of the utility model;

[0022] Figure 2 It is a left view of the utility model;

[0023] Figure 3 It is a top view of the utility model;

[0024] Figure 4 It is a schematic diagram of the plane layout of the limiting parts in the catwalk load-bearing cable limiting assembly;

[0025] Figure 5 A schematic diagram of the structure of bolts and matching nuts for fixing the catwalk handrail cable;

[0026] Figure 6 for Figure 1 A magnified schematic diagram of the middle A area;

[0027] Figure 7 for Figure 1 A magnified schematic diagram of the middle B area;

[0028] Figure markings: 1-catwalk handrail cable, 2-catwalk load-bearing cable, 3-column body, 4-upper stiffening plate, 5-bolts for fixing catwalk handrail cable, 6-pressure plate, 7-limiting piece, 8-connecting bolts, 9-main crossbeam, 10-small longitudinal beam, 11-connecting rod, 12-connecting plate, 13-single-cable limiting piece, 14-multi-cable limiting piece, 15-circular hole of catwalk handrail cable, 16-lower stiffening plate. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0030] See also Figure 1-7 As shown, a displacement device for a catwalk load-bearing cable of a suspension bridge comprises a catwalk handrail cable 1, a catwalk load-bearing cable 2, a column body 3, an upper stiffening plate 4, a bolt 5 for fixing the catwalk handrail cable, a pressure plate 6, a limiter 7, a connecting bolt 8, a main crossbeam 9, a small longitudinal beam 10, a connecting rod 11, a connecting plate 12, a single-cable limiter 13, a multi-cable limiter 14, a catwalk handrail cable round hole 15, and a lower stiffening plate 16, wherein:

[0031] The four column bodies 3 are arranged in a rectangular shape, and a main beam 9 is fixed between the bottoms of the two column bodies 3 on the vertical long sides and opposite to each other in the front and back, and a small longitudinal beam 10 is fixed between the bottoms of the two column bodies 3 on the horizontal short sides and opposite to each other in the left and right, and a small longitudinal beam 10 is fixed between the two main beams 9. The four column bodies 3, the two main beams 9, and the three small longitudinal beams 10 together form a "sun" shaped frame;

[0032] A connecting plate 12 is installed at the middle bottom of the three small longitudinal beams 10 and at the bottom of each 1 / 4 and 3 / 4 of the two main cross beams 9, and a connecting rod 11 is installed between two adjacent connecting plates 12;

[0033] Three pairs of catwalk handrail cable circular holes 15 are evenly spaced at the middle and upper parts of each of the left and right opposite column bodies 3. The left and right ends of the catwalk handrail cable 1 pass through the two catwalk handrail cable circular holes 15 on the same horizontal line, and are fixed to the column body 3 by fixing the catwalk handrail cable bolts 5 and matching nuts;

[0034] Three single-cable limiting members 13 are evenly spaced on the left main crossbeam 9 between two adjacent small longitudinal beams 10, and a multi-cable limiting member 14 is provided in the middle of the right main crossbeam 9 between two adjacent small longitudinal beams 10. The left ends of the three catwalk load-bearing cables 2 are respectively placed in the slots of the multi-cable limiting member 14 on the right, and the right ends of the three catwalk load-bearing cables 2 are respectively placed in the slots of the three single-cable limiting members 13 on the left. The pressure plate 6 presses the catwalk load-bearing cables 2 from above and covers the single-cable limiting members 13 and the multi-cable limiting members 14. The connecting bolt 8 passes through the pressure plate 6, the single-cable limiting member 13, and the multi-cable limiting member 14 from top to bottom and is screwed into the main crossbeam 9 to fix the pressure plate 6 on the single-cable limiting member 13, the multi-cable limiting member 14 and the main crossbeam 9, thereby fixing the three catwalk load-bearing cables 2 between the two adjacent small longitudinal beams 10 on the two main crossbeams 9, and upper limiting the catwalk load-bearing cables 2.

[0035] An upper stiffening plate 4 is fixed at each node position where a bolt 5 fixing the catwalk handrail cable is installed with the column body 3 .

[0036] A lower stiffening plate 16 is fixed at the bottom of the node position between each main cross beam 9 and a single column body 3 .

[0037] The limiter 7 is composed of a single-cable limiter 13 and a multi-cable limiter 14, both of which are made of 50 mm thick steel plates. The size and arrangement position are determined by the horizontal spacing of the catwalk load-bearing cables 2. The single-cable limiter 13 is installed on the full-bridge equal-width side of the horizontal spacing of the catwalk load-bearing cables 2, and the multi-cable limiter 14 is installed on the narrowing side of the horizontal spacing of the catwalk load-bearing cables 2. The limiter 7 is fixed to the pressure plate 6 and the main crossbeam 9 by connecting bolts 8 to form a catwalk load-bearing cable limiter assembly, and the catwalk load-bearing cables 2 are horizontally limited. The limiter 7 is the main limiter component and plays an important role in the displacement of the catwalk load-bearing cables 2.

[0038] The column body 3 is made of HW300×300 steel, and the length is determined according to the height of the catwalk handrail cable.

[0039] The upper stiffening plate 4 and the lower stiffening plate 16 are both made of 10 mm thick steel plates and imitate HW300×300 steel.

[0040] The bolt 5 for fixing the catwalk handrail cable is made of an M12 U-bolt, and the inner bending diameter and the total length are determined by the catwalk handrail cable 1.

[0041] The pressing plate 6 is made of a steel plate with a thickness of 30 mm and a width of 300 mm, and its length is determined by the lateral spacing of the displacement of the catwalk load-bearing cables 2 and the lateral spacing of the installation of a plurality of limit members 7.

[0042] The connecting bolt 8 is made of an M22 bolt with a length of 140 mm.

[0043] The main cross beam 9 is made of HW300×300 steel, and its length is determined by the width of the catwalk system. The connecting bolts 8 pass through the pressing plate 6 and the limiting member 7 in sequence and are connected and fixed on the main cross beam 9 to limit the catwalk load-bearing cable 2 in space.

[0044] The small longitudinal beam 10 is made of I25a steel, and its length is determined by the longitudinal spacing of the catwalk load-bearing cables 2.

[0045] The connecting rod 11 is made of two equal-leg angle steels ∠10×10×6mm and □270×10×80mm steel plates welded together, and its length is determined by the spatial distance between the main crossbeam 9 and the small longitudinal beam 10. The connecting rod 11 is connected to the main crossbeam 9 and the small longitudinal beam 10 through the connecting plate 12 to form a stable supporting base.

[0046] The connecting plate 12 is made of a 10 mm thick steel plate, and its size is customized on site.

[0047] The size and spacing of the circular holes 15 of the catwalk handrail cable are determined by the bolts 5 for fixing the catwalk handrail cable, and the position is determined by the height of the catwalk handrail cable 1.

[0048] See also Figure 1-7 As shown, a construction method of a displacement device of a load-bearing cable of a suspension bridge catwalk comprises the following steps:

[0049] S1. Preparation of the displacement device of the catwalk load-bearing cable: According to the displacement position and spatial distance of the actual catwalk load-bearing cable 2 on site, the displacement device of the catwalk load-bearing cable is manufactured; after the manufacture is completed, the displacement device is hoisted to the lower part of the displacement position of the catwalk load-bearing cable 2 on site for installation, and a hand chain hoist is used for assistance;

[0050] S2. Displacement of catwalk load-bearing cables: According to the actual construction on site, use a hand chain hoist to symmetrically adjust the catwalk load-bearing cables 2 one by one to the corresponding slot position of the limiter 7, and place the catwalk load-bearing cables 2 into the slot. After installing the pressure plate 6, immediately tighten the connecting bolts 8. After all the catwalk load-bearing cables 2 are placed into the slot position of the limiter 7 and limited, the displacement of the catwalk load-bearing cables 2 is completed;

[0051] S3. Fixing of catwalk handrail cable: adjust the catwalk handrail cable 1 to the position of the catwalk handrail cable round hole 15 reserved on the column body 3, install and fix the catwalk handrail cable bolt 5, and fix the catwalk handrail cable 1 to the column body 3 by fixing the catwalk handrail cable bolt 5. That is, the displacement device of the entire catwalk load-bearing cable is installed.

[0052] The present invention is not limited to the above-mentioned embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A displacement device for a load-bearing cable of a catwalk of a suspension bridge, characterized by comprising: Catwalk handrail cable, catwalk load-bearing cable, column body, upper stiffening plate, bolts for fixing catwalk handrail cable, pressure plate, limiter, connecting bolts, main crossbeam, small longitudinal beam, connecting rod, connecting plate, single-cable limiter, multi-cable limiter, catwalk handrail cable round hole, lower stiffening plate, including: The four columns are arranged in a rectangular shape. A main beam is fixed between the bottoms of the two columns on the vertical long side and opposite to each other. A small longitudinal beam is fixed between the bottoms of the two columns on the horizontal short side and opposite to each other. A small longitudinal beam is fixed between the two main beams. The four columns, two main beams and three small longitudinal beams together form a "sun" shaped frame. A connecting plate is installed at the middle bottom of the three small longitudinal beams and at the bottom of 1 / 4 and 3 / 4 of the two main cross beams, respectively, and a connecting rod is installed between two adjacent connecting plates; Three catwalk handrail cable circular holes are evenly spaced in the middle and upper part of each of the left and right opposite column bodies. The left and right ends of the catwalk handrail cable respectively pass through the two catwalk handrail cable circular holes on the same horizontal line, and are fixed to the column body together with the catwalk handrail cable bolts and matching nuts; More than two single-cable limiters are evenly spaced on the left main crossbeam between two adjacent small longitudinal beams, and a multi-cable limiter is provided in the middle of the right main crossbeam between two adjacent small longitudinal beams. The number of slots on the multi-cable limiter, the number of single-cable limiters and the number of catwalk load-bearing cables are consistent. The left ends of more than two catwalk load-bearing cables are respectively placed in the slots of the multi-cable limiter on the right, and the right ends of more than two catwalk load-bearing cables are respectively placed in the slots of more than two single-cable limiters on the left. The pressure plate cover presses the catwalk load-bearing cables from above and covers the single-cable limiter and the multi-cable limiter. The connecting bolts pass through the pressure plate, the single-cable limiter and the multi-cable limiter from top to bottom and are then screwed into the main crossbeam to fix the pressure plate on the single-cable limiter, the multi-cable limiter and the main crossbeam, thereby fixing the more than two catwalk load-bearing cables between the two adjacent small longitudinal beams on the two main crossbeams, and upper limiting the catwalk load-bearing cables.

2. The displacement device of the load-bearing cable of the catwalk of a suspension bridge according to claim 1 is characterized in that: An upper stiffening plate is fixed at a node position where each bolt of the fixed catwalk handrail cable is installed with the column body.

3. The displacement device of the load-bearing cable of the catwalk of a suspension bridge according to claim 1 is characterized in that: A lower stiffening plate is fixed at the bottom of the node position between each main beam and a single column body.

4. The displacement device for the load-bearing cable of the catwalk of a suspension bridge according to claim 1 is characterized in that: The bolts for fixing the catwalk handrail cables are U-shaped bolts.

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