A steel wire anchoring device for main cable of suspension bridge using spinning method

Abstract

The invention relates to a wire anchoring device for main cable spinning construction of a suspension bridge, which at least comprises a movable rod, a fixed rod, an eight-wire clamp, a four-wire clamp, a rigging spiral buckle, an upper wire rope clamp, a lower wire rope clamp, a wire rope, a catwalk crossbeam, a catwalk rope and a crossbar. Two movable rods and two fixed rods are connected up and down to form two vertical rods respectively. A crossbar is vertically connected between the fixed rods of the two vertical rods, and the bottoms of the two fixed rods are connected to the catwalk crossbeam. The two ends of the top of the movable rod of each vertical rod are obliquely pulled into a right-sided triangle symmetrical with the vertical rod as the center through the rigging spiral buckle, the upper wire rope clamp and the lower wire rope clamp. The upper end of each wire rope is fixed to the top of the movable rod through the rigging spiral buckle, and the lower end is fixed to the catwalk rope through the lower wire rope clamp. An eight-wire clamp is also fixed to the top of each movable rod, and two groups of four-wire clamps are fixed on the crossbar. The two vertical rods are symmetrically arranged with the center line of the catwalk.

Description

Technical Field

[0001] The invention relates to the technical field of main cable construction of suspension bridges, in particular to a steel wire anchoring device for main cable spinning construction of suspension bridges, which is used for anchoring cable strand steel wires in the aerial spinning method (AS method) construction of main cable of suspension bridges. Background Art

[0002] The main cable installation methods of suspension bridges are divided into prefabricated parallel wire strand method (PPWS method) and aerial spinning method (AS method). The PPWS method is a method of prefabricating parallel wire bundles into strands for installation, and the AS method is a method of independently pulling the wires back and forth to form strands. During the process of pulling the wires back and forth, the main cable wires need to maintain a constant tension. When the wires reach the anchor, the wire anchoring operation needs to be carried out. In this process, in order to prevent the changes in the wire tension from affecting the accuracy of the main cable installation, the wires need to be anchored.

[0003] When the steel wire starts spinning, the starting wire head of the steel wire needs to be anchored, so the steel wire anchoring device also plays the role of anchoring the starting wire head. The PPWS method is a method for constructing the main cable with the entire cable strand, and there is no problem of steel wire anchoring. Summary of the invention

[0004] The object of the present invention is to provide a wire anchoring device for main cable spinning construction of a suspension bridge, so as to solve the problem of cable strand wire tension change caused by related operations during the erection process of the main cable in AS method main cable construction.

[0005] The object of the present invention is achieved in this way. A wire anchoring device for the main cable of a suspension bridge constructed by the spinning method comprises at least a movable rod, a fixed rod, an eight-wire clamp, a four-wire clamp, a rigging spiral buckle, an upper wire rope clamp, a lower wire rope clamp, a wire rope, a catwalk beam, a catwalk rope and a crossbar. Two movable rods and two fixed rods are connected up and down to form two vertical poles respectively. The crossbar is vertically connected between the fixed rods of the two vertical poles, and the bottoms of the two fixed rods are connected to the catwalk beam; the two ends of the top of the movable rod of each vertical pole are obliquely pulled into a right-sided triangle symmetrical with the vertical pole as the center through the rigging spiral buckle, the upper wire rope clamp and the lower wire rope clamp; the upper end of each wire rope is fixed to the top of the movable rod through the rigging spiral buckle, and the lower end is fixed to the catwalk rope through the lower wire rope clamp; an eight-wire clamp is also fixed on the top of each movable rod, and two groups of four-wire clamps are fixed on the crossbar, and the two vertical poles are symmetrically arranged with the center line of the catwalk.

[0006] The eight-wire clamps are fixed on the top of the movable rod by welding or spirals and clamps, and two groups of eight-wire clamps are symmetrically distributed around the center line of the catwalk.

[0007] The movable rod and the fixed rod are positioned and fixed up and down by bolts. The fixed rod is at the bottom and the movable rod is at the top to form a height-adjustable structure. Two groups of four-wire clamps are located on both sides of the center line of the crossbar.

[0008] U bolts are provided on the catwalk's large crossbeam located outside the two vertical poles, and the catwalk's large crossbeam is connected to the catwalk rope through the U bolts; in the bilaterally symmetrical right-sided triangle, the two steel wire ropes are respectively located on the hypotenuses of the right-sided triangle, the upper ends of the two hypotenuses are respectively fixed to the upper ends of the left and right movable rods, and the lower ends of the hypotenuses are used to pull the catwalk's large crossbeam through the catwalk rope.

[0009] The two fixing rods and the cross rod are connected to form an H-shaped structure. A connecting bottom plate is provided at the bottom of the two fixing rods. The left and right connecting bottom plates are fixedly connected to the large cross beam of the catwalk.

[0010] The fixed rod and the movable rod are square steel pipes, and the diameter of the square steel pipe of the movable rod is smaller than that of the square steel pipe of the fixed rod.

[0011] The upper ends of the two fixed rods are respectively connected to movable rods, which are called adjustment rods and are inserted into the upper tube of the fixed rods. The top of the movable rod is connected to a connecting top plate and a lock spiral buckle connecting plate. The connecting top plate is fixed to the upper end of the lock spiral buckle connecting plate. The lock spiral buckle connecting plate and the movable rod are connected to form a T-shaped structure, and the two are fixed by bolts. Bolt holes are spaced apart in the length direction of the rod body of the movable rod, and the position of the movable rod is changed through the bolt holes.

[0012] The movable rod and the fixed rod are rectangular steel pipes, and 8 bolt holes are evenly arranged on the movable rod. The rectangular pipe diameter of the movable rod is smaller than the rectangular pipe diameter of the fixed rod. When in use, the movable rod is inserted into the fixed rod, and the height required for actual use is adjusted. Then, the movable rod and the fixed rod are adjusted to the bolt holes with bolts and nuts to fix them.

[0013] The advantages of the present invention are:

[0014] (1) The structure is simple and easy to assemble and disassemble. It can meet the requirements of stress stability and ensure safe use.

[0015] (2) The height is adjustable to adapt to the anchoring of main cable wires at different heights.

[0016] (3) A rigging turnbuckle is provided to adjust the length of the anchor wire rope, thereby ensuring the reliability of the wire rope pulling and improving the safety of the anchoring device.

[0017] (4) The four-wire clamp and the eight-wire clamp can be quickly assembled and disassembled when clamping the steel wire, ensuring the efficiency of the construction during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings of the embodiments, but this is not intended to limit the present invention:

[0019] Figure 1 It is the front view of the structure of the wire anchoring device;

[0020] Figure 2 It is a side view of the structure of the wire anchoring device;

[0021] Figure 3 It is the structural diagram of the fixed rod;

[0022] Figure 4 It is the structure diagram of the movable rod;

[0023] Figure 5 Schematic diagram of the actual application of the wire anchoring device.

[0024] In the figure, 1. movable rod; 2. fixed rod; 3. eight-wire clamp; 4. four-wire clamp; 5. rigging turnbuckle; 6. upper wire rope clamp; 7. lower wire rope clamp; 8. wire rope; 9. catwalk large beam; 10. catwalk rope; 11. crossbar; 12. left and right vertical poles; 13. connecting bottom plate; 14. connecting top plate; 15. bolts; 16. bolt holes; 17. lock turnbuckle connecting plate. DETAILED DESCRIPTION

[0025] Example 1

[0026] A steel wire anchoring device for main cable of suspension bridge constructed by spinning method, such as Figure 1 , Figure 2 As shown, Figure 1 This is the front view of the wire anchoring device structure. Figure 2 It is a side view of the structure of the wire anchoring device, which at least includes a movable rod 1, a fixed rod 2, an eight-wire clamp 3, a four-wire clamp 4, a rigging turnbuckle 5, an upper wire rope clamp 6, a lower wire rope clamp 7, a wire rope 8, a catwalk beam 9, a catwalk rope 10 and a crossbar 11. Two movable rods 1 and two fixed rods 2 are connected up and down to form two vertical rods 12, and the crossbar 11 is vertically connected between the fixed rods 2 of the two vertical rods 12. The bottoms of the two fixed rods 2 are connected to the catwalk beam 9; each vertical rod 12 Both ends of the top of the movable rod 1 are obliquely pulled into a right-sided triangle with the vertical pole 12 as the center and symmetrical on both sides through the rigging spiral buckle 5, the upper wire rope clamp 6, and the lower wire rope clamp 7; the upper end of each wire rope 8 is fixed to the top of the movable rod 1 through the rigging spiral buckle 5, and the lower end is fixed to the catwalk rope 10 through the lower wire rope clamp 7; an eight-wire wire clamp 3 is also fixed to the top of each movable rod 1, and two groups of four-wire wire clamps 4 are fixed on the cross bar 11, and the two vertical poles 12 are symmetrically arranged with the center line of the catwalk.

[0027] Furthermore, the eight-wire clamp 3 is fixed to the top of the movable rod 2 by welding or screw and clamp, and two groups of eight-wire clamps 3 are symmetrically distributed around the center line of the catwalk. The eight-wire clamp 3 is used to anchor the steel wire during the main cable installation process to ensure that the steel wire maintains a constant tension during the anchoring process.

[0028] Further, if Figure 2 As shown, the movable rod 1 and the fixed rod 2 are positioned and fixed up and down by bolts, and the fixed rod 2 is at the bottom and the movable rod 1 is at the top to form a height-adjustable structure. Two sets of four-wire clamps 4 are located on both sides of the center line of the cross bar 11 and are used to anchor the starting steel wire to ensure constant tension of the starting steel wire.

[0029] Furthermore, U bolts are provided on the catwalk beam 9 located outside the two vertical poles 12, and the catwalk beam 9 is connected to the catwalk rope 10 through the U bolts; since the steel wire rope has a certain tension, in order to prevent the pulling of the steel wire rope from causing the tipping of the steel wire anchoring device, in the left-right symmetrical right-sided triangle, the two steel wire ropes 8 are respectively located on the hypotenuse of the right-sided triangle, and the upper ends of the two hypotenuses are respectively fixed to the upper ends of the left and right movable rods 2, and the lower end of the hypotenuse realizes the pulling of the catwalk beam 9 through the catwalk rope 10.

[0030] Further, if Figure 3 As shown, the two fixing rods 2 and the cross bar 11 are connected to form an H-shaped structure, and a connecting bottom plate 13 is provided at the bottom of the two fixing rods 2, and the left and right connecting bottom plates 13 are fixedly connected to the catwalk large crossbeam 9.

[0031] Further, if Figure 4 As shown, the upper ends of the two fixed rods 2 are respectively connected with movable rods 1, and the movable rod 1 is also called the adjustment rod, which is inserted into the upper tube of the fixed rod 2. The top of the movable rod 1 is connected with a connecting top plate 14 and a lock screw buckle connecting plate 17. The connecting top plate 14 is fixed on the upper end of the lock screw buckle connecting plate 17. The lock screw buckle connecting plate 17 and the movable rod 1 are connected to form a T-shaped structure, and the two are fixed by bolts 15; bolt holes 16 are spaced apart in the length direction of the rod body of the movable rod 1, and the position of the movable rod 1 is changed by the bolt holes 16.

[0032] Preferably, the fixed rod 2 and the movable rod 1 are round steel pipes, and the diameter of the movable rod 1 is smaller than that of the fixed rod. When in use, the movable rod 2 is inserted into the fixed rod 1, the height required for actual use is adjusted, and then the fixed rod 1 and the movable rod 2 are adjusted to the bolt holes with bolts and nuts to fix them.

[0033] Example 2

[0034] Based on Example 1, the difference is that the movable rod 1 and the fixed rod 2 are rectangular steel pipes, and 8 bolt holes are evenly arranged on the movable rod 1. The rectangular tube diameter of the movable rod 1 is smaller than the rectangular tube diameter of the fixed rod 2. When in use, the movable rod 1 is inserted into the fixed rod 2, and the height required for actual use is adjusted. Then, the fixed rod 2 and the movable rod 1 are adjusted at the bolt holes with bolts and nuts to fix them.

[0035] The difference between Example 2 and Example 1 is that the former adopts a round tube structure, while the latter adopts a square tube structure.

[0036] In actual use, the starting wire head is anchored on the four-wire clamp 4 to maintain its constant tension. When the main cable wire is set up and reaches the anchor for wire hanging and anchoring, the wire is anchored at the eight-wire clamp 3 to ensure its constant tension so as not to affect the accuracy of wire setting. Figure 5 shown.

[0037] The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry and are not described one by one here.

Claims

1. A steel wire anchoring device for main cable of a suspension bridge constructed by spinning method, characterized by: The invention comprises at least a movable rod (1), a fixed rod (2), an eight-wire clamp (3), a four-wire clamp (4), a rigging turnbuckle (5), an upper wire rope clamp (6), a lower wire rope clamp (7), a wire rope (8), a catwalk crossbeam (9), a catwalk rope (10) and a crossbar (11). Two movable rods (1) and two fixed rods (2) are connected up and down to form two vertical rods (12), the crossbar (11) is vertically connected between the fixed rods (2) of the two vertical rods (12), and the bottoms of the two fixed rods (2) are connected to the catwalk crossbeam (9); the movable rod of each vertical rod (12) (1) Two steel wire ropes (8) are obliquely pulled into a right-sided triangle symmetrical with the vertical pole (12) as the center through a rigging turnbuckle (5), an upper wire rope clamp (6), and a lower wire rope clamp (7) at both ends of the top; the upper end of each steel wire rope (8) is fixed to the top of the movable pole (1) through the rigging turnbuckle (5), and the lower end is fixed to the catwalk rope (10) through the lower wire rope clamp (7); an eight-wire clamp (3) is also fixed to the top of each movable pole (1), two sets of four-wire clamps (4) are fixed to the crossbar (11), and the two vertical poles (12) are symmetrically arranged with the center line of the catwalk as the center line; The fixed rod (2) and the movable rod (1) are round steel pipes or rectangular steel pipes; The eight-wire clamps (3) are fixed to the top of the movable rod (1) by welding or screwing and clamping, and the two groups of eight-wire clamps (3) are symmetrically distributed around the center line of the catwalk.

2. According to claim 1, a steel wire anchoring device for main cable of a suspension bridge constructed by spinning method is characterized by: The movable rod (1) and the fixed rod (2) are positioned and fixed up and down by bolts, the fixed rod (2) is at the bottom and the movable rod (1) is at the top to form a height-adjustable structure, and two sets of four-wire clamps (4) are located on both sides of the center line of the crossbar (11).

3. The steel wire anchoring device for main cable of suspension bridge constructed by spinning method according to claim 1 is characterized in that: U bolts are provided on the catwalk crossbeam (9) located outside the two uprights (12), and the catwalk crossbeam (9) is connected to the catwalk rope (10) through the U bolts; in the bilaterally symmetrical right-sided triangle, the two steel wire ropes (8) are respectively located on the hypotenuse of the right-sided triangle, the upper ends of the two hypotenuses are respectively fixed to the upper ends of the left and right movable rods (1), and the lower ends of the hypotenuses are used to pull the catwalk crossbeam (9) through the catwalk rope (10).

4. The steel wire anchoring device for main cable of a suspension bridge constructed by spinning method according to claim 1 is characterized by: The two fixing rods (2) and the cross rod (11) are connected to form an H-shaped structure. A connecting bottom plate (13) is provided at the bottom of the two fixing rods (2). The left and right connecting bottom plates (13) are fixedly connected to the catwalk cross beam (9).

5. The steel wire anchoring device for main cable of a suspension bridge constructed by spinning method according to claim 1 is characterized by: The fixed rod (2) and the movable rod (1) are square steel tubes, and the diameter of the square steel tube of the movable rod (1) is smaller than the diameter of the square steel tube of the fixed rod (2).

6. The steel wire anchoring device for main cable of a suspension bridge constructed by spinning method according to claim 1 is characterized by: The upper ends of the two fixed rods (2) are respectively connected to movable rods (1), the movable rod (1) or adjustment rod being inserted into the upper tube of the fixed rod (2), the top of the movable rod (1) being connected to a connecting top plate (14) and a lock screw buckle connecting plate (17), the connecting top plate (14) being fixed to the upper end of the lock screw buckle connecting plate (17), the lock screw buckle connecting plate (17) and the movable rod (1) being connected to form a T-shaped structure, and the two are fixed by bolts (15); bolt holes (16) are spaced apart in the length direction of the rod body of the movable rod (1), and the position of the movable rod (1) is changed by the bolt holes (16).

7. The steel wire anchoring device for main cable of a suspension bridge constructed by spinning method according to claim 1 is characterized by: The movable rod (1) and the fixed rod (2) are rectangular steel tubes. Eight bolt holes (16) are evenly arranged on the movable rod (1). The rectangular tube diameter of the movable rod (1) is smaller than the rectangular tube diameter of the fixed rod (2). When in use, the movable rod (1) is inserted into the fixed rod (2), and the height required for actual use is adjusted. Then, bolts and nuts are used to adjust the movable rod (1) and the fixed rod (2) at the bolt holes to fix them.

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