Catwalk bearing cable connecting device for space cable self-anchored suspension bridge

Abstract

The utility model relates to a catwalk bearing cable connecting device for a space cable self-anchored suspension bridge, which comprises a first connecting lug plate, a first connecting rod, a fixed anchor beam, a plurality of groups of bearing cables and screw pairs, an adjusting anchor beam, a second connecting rod and a second connecting lug plate, the two ends of the first connecting rod are hinged to the first connecting lug plate and the fixed anchor beam respectively, the two ends of the bearing cable are connected to the fixed anchor beam and the screw pair through pin shafts respectively, and the movable end of the screw pair is arranged on the adjusting anchor beam. The two ends of the second connecting rod are hinged to the adjusting anchor beam and the second connecting lug plate respectively. By adopting a double-connecting-rod hinging structure and a screw transmission structure, the length and angle adjustment is more flexible, the device adapts to the linear change of a space main cable, the control effect of the catwalk sliding precision is improved, the problems that in the prior art, a catwalk bearing cable connecting device is inconvenient to adjust and high in precision control difficulty are solved, and the service life of the catwalk bearing cable connecting device is prolonged. And the device has the advantages of being safe, stable, easy to adjust and the like, and meets the construction requirements of the space cable self-anchored suspension bridge.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension bridges, in particular to a catwalk load-bearing cable connecting device used for a space cable self-anchored suspension bridge. Background Art

[0002] Self-anchored suspension bridges have developed rapidly in small and medium span bridges in recent years because of their advantages such as no site restrictions, no need for large-volume anchors, reasonable structure, and beautiful appearance. In some self-anchored suspension bridges, the main saddle and the auxiliary saddles on both sides are not in the same plane, and the large cable is in a spatial cable state. For example, the proposed Quzhou Xiafei Bridge, before the vertical rotation of the main tower, needs to weld special tooling-catwalk ear plate connectors at the corresponding position of the tower body. In order to adapt to the changes in the main span main cable line shape and the bridge line shape, adjustable pull rods are set at the middle span tower end and the side span beam end to connect with the catwalk load-bearing cable pins. Due to the influence of the position of the reaction frame at the side span tower end, it is necessary to add a displacement device so that the catwalk load-bearing cables can be arranged according to the designed spacing.

[0003] In the construction process of traditional suspension bridges, the catwalk load-bearing cables are directly connected to the tower top after being connected to the tie rods. When the position of the catwalk needs to be adjusted, the angle of the catwalk load-bearing cables and the expansion and contraction length of the tie rods need to be adjusted. Generally, the tie rods and load-bearing ropes are either adjusted through the tie rods in the anchorage chamber, or the angle cannot be freely adjusted, or only the length can be adjusted. They are not suitable for the linear changes of the main cables in space, which makes it difficult to control the sliding accuracy of the catwalks in the middle and side spans. Since the linearity of the main cable changes continuously with the construction process, the linear adjustment of the catwalk needs to be precisely controlled. Therefore, it is urgent to design a catwalk load-bearing cable connection device for a space cable self-anchored suspension bridge, which can better adjust the position changes such as the length and angle of the load-bearing cables, and thus better adjust the position of the catwalk. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a catwalk load-bearing cable connecting device for a space cable self-anchored suspension bridge in view of the above-mentioned deficiencies in the prior art, which has the advantage of being easy to adjust the length and angle of the load-bearing cable.

[0005] The above utility model object of the utility model is achieved through the following technical solutions:

[0006] A catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge comprises a first connecting ear plate, a first connecting rod, a fixed anchor beam, multiple groups of load-bearing cables and screw pairs, an adjusting anchor beam, a second connecting rod and a second connecting ear plate, wherein the two ends of the first connecting rod are respectively hinged to the first connecting ear plate and the fixed anchor beam, the two ends of the load-bearing cable are respectively connected to the fixed anchor beam and the screw pair through a pin shaft, the movable end of the screw pair is arranged on the adjusting anchor beam, and the two ends of the second connecting rod are respectively hinged to the adjusting anchor beam and the second connecting ear plate.

[0007] By adopting the above technical solution, each catwalk of the main span and the side span uses 6 Ф26mm steel wire ropes as load-bearing ropes. The load-bearing ropes are clamped with rope clamps and anchored to the fixed anchor beams and screw pairs at the tower end and the beam end through pins. The load-bearing ropes are divided into three spans of the middle span and the side span and are disconnected. After the first connecting ear plate, the first connecting rod, the fixed anchor beam, the load-bearing rope, the screw pair, the adjusting anchor beam, the second connecting rod and the second connecting ear plate are connected in sequence, the first connecting rod and the second connecting rod hinged at both ends can be tilted and rotated to cooperate with the adjustment of the angles of the two ends of the load-bearing rope. At the same time, the screw pair adjusts the anchor relatively. The displacement of the beam can cooperate with the adjustment of the length of the load-bearing cable, and finally realize the adjustment of the position changes such as the angle and length of the load-bearing cable, so as to better realize the position adjustment of the catwalk; in this process, by adopting a double connecting rod articulated structure and a screw transmission structure, the length and angle adjustment are more flexible, adapting to the changes in the linear shape of the spatial main cable, and improving the sliding precision control effect of the catwalk. It not only solves the problems of inconvenient adjustment and difficult precision control of the catwalk load-bearing cable connection device in the prior art, but also has the advantages of safety, stability and easy adjustment, and is suitable for the construction needs of spatial cable self-anchored suspension bridges.

[0008] The utility model is further configured as follows: at least two first connecting rods are hinged on the fixed anchor beam, and the first connecting ear plates and the first connecting rods are arranged in a one-to-one correspondence.

[0009] By adopting the above technical solution, the stability and load-bearing capacity of the connecting device are further improved.

[0010] The utility model is further configured as follows: the rotation axis center lines of the hinged ends of the first connecting rods are parallel to the length direction of the fixed anchor beam.

[0011] By adopting the above technical solution, the stability and load-bearing capacity of the connecting device are further improved.

[0012] The utility model is further configured as follows: the adjusting anchor beam is provided with at least two and respectively connected to the movable ends of the screw rod pairs; at least two second connecting rods are hinged on the adjusting anchor beam; the second connecting ear plates and the second connecting rods are arranged in one-to-one correspondence.

[0013] By adopting the above technical solution, the stability and load-bearing capacity of the connecting device are further improved.

[0014] The utility model is further configured as follows: the rotation axis center lines of the hinged ends of the second connecting rods are parallel to the length direction of the adjusting anchor beam.

[0015] By adopting the above technical solution, the stability and load-bearing capacity of the connecting device are further improved.

[0016] The utility model is further configured as follows: the screw pair includes a fork ear, an adjusting screw arranged on the fork ear and passing through the adjusting anchor beam, and an adjusting nut threadedly connected to the adjusting screw; the end of the load-bearing cable is connected to the fork ear through a pin shaft, and the adjusting nut tightly contacts the end of the adjusting anchor beam away from the load-bearing cable.

[0017] By adopting the above technical solution, the screw drive has the advantages of small starting torque and good self-locking, which can drive the end of the load-bearing cable to move smoothly relative to the adjustment anchor beam, thereby realizing precise adjustment of the length of the load-bearing cable.

[0018] The utility model is further configured as follows: a plurality of strip openings are opened on the adjusting anchor beam, and the adjusting screw rod is slidably penetrated through the strip openings.

[0019] By adopting the above technical solution, during the linear change adjustment process of the load-bearing cable, the length and angle of the load-bearing cable can be adjusted more accurately by adjusting the horizontal displacement of the screw along the strip mouth, thereby improving the sliding accuracy control effect of the catwalk.

[0020] The utility model is further configured as follows: the strip-shaped opening is parallel to the length direction of the adjusting anchor beam.

[0021] By adopting the above technical solution, the length and angle of the load-bearing cable can be adjusted more accurately.

[0022] The utility model is further configured as follows: the adjusting screw rod is configured as a precision-rolled threaded steel bar.

[0023] By adopting the above technical solution, the wear resistance and tensile strength of the connecting device are improved.

[0024] The utility model is further configured as follows: the adjusting nut is configured as a precision-rolled threaded steel nut.

[0025] By adopting the above technical solution, the wear resistance and tensile strength of the connecting device are improved.

[0026] To sum up, the beneficial technical effects of the utility model are as follows: by adopting a double connecting rod articulated structure and a screw transmission structure, the length and angle adjustment are more flexible, adapting to the changes in the linear shape of the spatial main cable, and improving the control effect of the sliding precision of the catwalk. It not only solves the problems of inconvenient adjustment and difficult precision control of the catwalk load-bearing cable connection device in the prior art, but also has the advantages of safety, stability, and easy adjustment, and is suitable for the construction needs of spatial cable self-anchored suspension bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a catwalk load-bearing cable connecting device of the utility model.

[0028] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A.

[0029] Figure 3 yes Figure 1 A partial enlarged schematic diagram of part B.

[0030] Figure 4 yes Figure 1 A partial enlarged schematic diagram of part C in the middle.

[0031] Figure 5 yes Figure 1 A partial enlarged schematic diagram of part D in the middle.

[0032] Figure 6 It is a schematic diagram of the connection relationship between the load-bearing cable, the screw rod pair, the adjustment anchor beam, the second connecting rod and the second connecting ear plate of the utility model.

[0033] Figure 7 It is a structural schematic diagram of the adjustable anchor beam of the utility model.

[0034] In the figure, 1, first connecting ear plate; 2, first connecting rod; 3, fixed anchor beam; 4, load-bearing rope; 5, screw pair; 51, fork ear; 52, adjusting screw; 53, adjusting nut; 6, adjusting anchor beam; 61, strip mouth; 7, second connecting rod; 8, second connecting ear plate. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Reference Figure 1, which is a catwalk load-bearing cable 4 connection device for a space cable self-anchored suspension bridge disclosed in the utility model, comprising a pair of first connection ear plates 1, two pairs of first connection rods 2, a fixed anchor beam 3, six groups of load-bearing cables 4 and screw rod pairs 5, a pair of adjustment anchor beams 6, two pairs of second connection rods 7, and two pairs of second connection ear plates 8, which are sequentially connected along the length direction. By adopting a double connection rod hinge structure and a screw rod transmission structure, the length and angle adjustment are more flexible, adapting to the changes in the shape of the main cable in space, and improving the control effect of the catwalk sliding precision, which not only solves the problems of inconvenient adjustment and high precision control difficulty of the catwalk load-bearing cable 4 connection device in the prior art, but also has the advantages of safety, stability, and easy adjustment, and is suitable for the construction needs of the space cable self-anchored suspension bridge.

[0037] Six Ф26mm steel wire ropes are used as load-bearing cables 4 for each catwalk of the main span and the side span. The load-bearing cables 4 are clamped with rope clamps and anchored on the fixed anchor beams 3 and screw pairs 5 at the tower ends and beam ends respectively through pins. The load-bearing cables 4 are divided into three spans of the middle span and the side span and are arranged in a disconnected manner. After the first connecting ear plate 1, the first connecting rod 2, the fixed anchor beam 3, the load-bearing cable 4, the screw pair 5, the adjusting anchor beam 6, the second connecting rod 7 and the second connecting ear plate 8 are connected in sequence, the first connecting rod 2 and the second connecting rod 7 hinged at both ends can be tilted and rotated to cooperate with the adjustment of the angles of the two ends of the load-bearing cable 4. At the same time, the screw pair 5 can cooperate with the adjustment of the length of the load-bearing cable 4 by relatively adjusting the displacement of the anchor beam 6, and finally realize the adjustment of the position changes such as the angle and length of the load-bearing cable 4, thereby better realizing the position adjustment of the catwalk.

[0038] Reference Figure 2 and Figure 3 First, the first connecting ear plate 1 is used to be fixedly installed on the catwalk and arranged one by one with the first connecting rod 2. At the same time, the two ends of the first connecting rod 2 are respectively hinged to the first connecting ear plate 1 and the fixed anchor beam 3, and the rotation axis of the hinged ends of the first connecting rod 2 is parallel to the length direction of the fixed anchor beam 3. The above structure further improves the stability and load-bearing capacity of the connecting device.

[0039] Reference Figure 4 and Figure 5 , secondly, the second connecting ear plate 8 is used to be fixedly installed on the catwalk and arranged one by one with the second connecting rods 7. At the same time, these screw rod pairs 5 are divided into two groups, and three screw rod pairs 5 are respectively installed on each adjusting anchor beam 6, and two second connecting rods 7 are hingedly connected. The rotation axis of the hinged end of these second connecting rods 7 is parallel to the length direction of the adjusting anchor beam 6. The above structure further improves the stability and load-bearing capacity of the connecting device.

[0040] Reference Figure 6, again, the screw pair 5 includes a fork ear 51, an adjusting screw 52 arranged on the fork ear 51 and passing through the adjusting anchor beam 6, and an adjusting nut 53 threadedly connected to the adjusting screw 52. The end of the load-bearing cable 4 is connected to the fork ear 51 through a pin, and the adjusting nut 53 is tightly in contact with the end of the adjusting anchor beam 6 away from the load-bearing cable 4. Among them, the adjusting screw 52 is set as a precision-rolled threaded steel bar, and the adjusting nut 53 is set as a precision-rolled threaded steel nut. The screw drive has the advantages of small starting torque and good self-locking, and can drive the end of the load-bearing cable 4 to move smoothly relative to the adjusting anchor beam 6, thereby realizing the precise adjustment of the length of the load-bearing cable 4.

[0041] Reference Figure 7 In addition, three strip openings 61 are provided on the adjustment anchor beam 6, and the adjustment screw rod 52 is slidably arranged on the strip openings 61, and the strip openings 61 are parallel to the length direction of the adjustment anchor beam 6. During the linear change adjustment process of the load-bearing cable 4, the adjustment screw rod 52 is horizontally displaced along the strip openings 61, so that the length and angle adjustment of the load-bearing cable 4 can be made more accurate, thereby improving the sliding precision control effect of the catwalk.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge, characterized by: The invention comprises a first connecting ear plate (1), a first connecting rod (2), a fixed anchor beam (3), multiple groups of load-bearing cables (4) and screw rod pairs (5), an adjusting anchor beam (6), a second connecting rod (7) and a second connecting ear plate (8), wherein the two ends of the first connecting rod (2) are respectively hinged to the first connecting ear plate (1) and the fixed anchor beam (3), the two ends of the load-bearing cable (4) are respectively connected to the fixed anchor beam (3) and the screw rod pair (5) through a pin shaft, the movable end of the screw rod pair (5) is arranged on the adjusting anchor beam (6), and the two ends of the second connecting rod (7) are respectively hinged to the adjusting anchor beam (6) and the second connecting ear plate (8).

2. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 1, characterized in that: At least two first connecting rods (2) are hinged on the fixed anchor beam (3), and the first connecting lug plates (1) and the first connecting rods (2) are arranged in a one-to-one correspondence.

3. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 2, characterized in that: The rotation axis center lines of the hinged ends of these first connecting rods (2) are parallel to the length direction of the fixed anchor beam (3).

4. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 1, characterized in that: The adjusting anchor beam (6) is provided with at least two and respectively connected to the movable ends of the screw rod pairs (5); at least two second connecting rods (7) are hinged on the adjusting anchor beam (6); the second connecting ear plates (8) and the second connecting rods (7) are arranged in a one-to-one correspondence.

5. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 4, characterized in that: The rotation axis center lines of the hinged ends of these second connecting rods (7) are parallel to the length direction of the adjustment anchor beam (6).

6. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 1, characterized in that: The screw pair (5) comprises a fork ear (51), an adjusting screw (52) arranged on the fork ear (51) and passing through the adjusting anchor beam (6), and an adjusting nut (53) threadedly connected to the adjusting screw (52); the end of the load-bearing cable (4) is connected to the fork ear (51) via a pin, and the adjusting nut (53) tightly contacts the end of the adjusting anchor beam (6) away from the load-bearing cable (4).

7. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 6, characterized in that: The adjusting anchor beam (6) is provided with a plurality of strip-shaped openings (61), and the adjusting screw rod (52) is slidably arranged through the strip-shaped openings (61).

8. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 7, characterized in that: The strip-shaped opening (61) is parallel to the length direction of the adjustment anchor beam (6).

9. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 6, characterized in that: The adjusting screw (52) is configured as a precision-rolled threaded steel bar.

10. The catwalk load-bearing cable connection device for a space-cable self-anchored suspension bridge according to claim 6, characterized in that: The adjusting nut (53) is configured as a precision-rolled threaded steel nut.

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