Quick stay cable replacement system

Abstract

The utility model discloses an inhaul cable quick replacement system which comprises a stay cable combination and a plurality of groups of rolling shaft systems arranged on the stay cable combination in a sliding mode, and the plurality of groups of rolling shaft systems are connected in series through connecting ropes. The rolling shaft system comprises a rail wheel, a bearing wheel and a connecting plate, the rail wheel is used for being arranged on the stay cable combination in a sliding mode, the bearing wheel is arranged below the rail wheel, the bearing wheel is used for bearing a target stay cable so that the target stay cable can slide on the bearing wheel, and the connecting plate is used for connecting the rail wheel and the bearing wheel. According to the stay cable rapid replacement system, the stay cable needing to be dismounted or mounted is the target stay cable, the target stay cable is borne on the bearing wheels, and the target stay cable slides on the bearing wheels, so that the dismounted or mounted stay cable can be pulled along the lower portion of the rolling shaft system, large hoisting equipment is not needed, limited space on a bridge cannot be occupied, and the stay cable rapid replacement system is simple in structure and convenient to use. And the replacement efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a fast replacement system for a stay cable. Background Art

[0002] A cable-stayed bridge is composed of cables, towers, main beams and bridge decks. The deck load is transmitted to the cables through the main beams, and then to the towers. Cable-stayed bridges are an important structural form of modern large-span bridges, especially when building large-span bridges across canyons, bays, large rivers and other places where piers are not easy to build, suspension bridges and cable-stayed bridges are often chosen.

[0003] The cables on the cable-stayed bridge are exposed to the sun and rain for a long time, which will gradually reduce their safety performance. The reduction in the safety performance of the cables directly affects the safety and load-bearing capacity of the bridge. If they are not repaired or replaced in time, safety accidents are likely to occur, affecting the normal use of the bridge. At present, the conventional method for replacing the cable is to first use a large tower crane or lifting equipment to hang the anchor head end at the cable tower, and then use a traction device to horizontally pull the anchor head end to the designated location for installation.

[0004] However, this method has the following problems: the cable is heavy and requires large equipment; large equipment needs to be operated on the bridge, occupying the limited space on the bridge and taking a long time to enter and exit; the removal and installation time is long and traffic needs to be interrupted. Especially in high-speed railways and railway cable-stayed bridges, the actual construction time is only about 3 hours a day, and the railway needs to be kept in normal operation at other times. The current cable replacement method can hardly meet the requirements. Utility Model Content

[0005] Based on this, it is necessary to provide a quick replacement system for inclined cables to address the problems of existing replacement methods for inclined cables, which occupy limited space on the bridge and take a long time to remove and install.

[0006] A fast-changing system for a stay cable comprises: a stay cable assembly and a plurality of roller systems slidably arranged on the stay cable assembly, wherein the plurality of roller systems are connected in series through a connecting rope, and the roller system comprises:

[0007] A track wheel, used for being slidably arranged on the inclined cable assembly;

[0008] a load-bearing wheel, disposed below the track wheel, the load-bearing wheel being used to bear a target stay cable so that the target stay cable slides on the load-bearing wheel; and

[0009] A connecting plate is used to connect the track wheel and the load-bearing wheel.

[0010] In one of the embodiments, the cable-stayed cable assembly includes a plurality of cable-stayed cables, and the plurality of cable-stayed cables are distributed in at least two rows and two columns.

[0011] In one embodiment, the roller system includes a first roller and a second roller, the track wheel is rotatably mounted on the first roller, the load-bearing wheel is rotatably mounted on the second roller, and the connecting plate connects the first roller and the second roller.

[0012] In one embodiment, each group of the roller system is provided with two track wheels, two first rollers and two connecting plates, the two track wheels are rotatably mounted on the two first rollers, the two first rollers are respectively mounted on the two connecting plates, and the two ends of the second roller are respectively connected to the two connecting plates.

[0013] In one embodiment, the two track wheels are symmetrically arranged about a center line, and the track wheels are located on the center line.

[0014] In one embodiment, the connecting rope is connected to the first roller to connect multiple groups of the roller systems in series.

[0015] In one of the embodiments, a plurality of mounting holes are formed on the connecting plate, and the plurality of mounting holes are spaced apart along the length direction of the connecting plate, and the second roller can be selectively installed in the mounting holes.

[0016] In the above-mentioned cable-stayed quick replacement system, the track wheel is slidably arranged on the cable-stayed assembly, the cable-stayed cable to be removed or installed is the target cable-stayed cable, which is carried on the load-bearing wheel and slides on the load-bearing wheel, so the cable-stayed cable to be removed or installed can be dragged along the bottom of the roller system, without the need for large-scale lifting equipment, and will not occupy the limited space on the bridge, effectively improving the replacement efficiency. Multiple sets of roller systems are slidably arranged on the cable-stayed assembly, and multiple sets of roller systems are connected in series to realize multi-point load-bearing of the target cable-stayed cable, reducing the requirements of the roller system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 2 is a schematic structural diagram of a fast-replacement system for a stay cable in one embodiment;

[0019] Figure 2 for Figure 1 A side view of the quick-change system for the inclined cables shown;

[0020] Figure 3 for Figure 1 A cross-sectional view of the quick-change system for the inclined cables is shown.

[0021] Reference numerals:

[0022] 10-stayed cable combination, 12-stayed cable, 14-target stayed cable, 20-roller system, 21-track wheel, 22-load-bearing wheel, 23-connecting plate, 232-installing hole, 24-first roller, 25-second roller, 30-connecting rope. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] See also Figure 1 The cable quick-change system in one embodiment comprises a cable assembly 10 and a plurality of roller systems 20, wherein the plurality of roller systems 20 are slidably disposed on the cable assembly 10, and the plurality of roller systems 20 are connected in series as a whole through a connecting rope 30.

[0027] In one embodiment, the cable assembly 10 includes a plurality of cables 12, which are arranged in at least two rows and two columns. The cable assembly 10 can be a plurality of cables 12 of the bridge itself, or a single cable 12 can be replaced by a plurality of cables 12.

[0028] Among them, the traditional single inclined cable 12 is replaced with four or more, which can reduce the weight of the single inclined cable 12 and facilitate installation. When replacing the inclined cables 12, even if any one of them is broken after being removed, the impact on the internal force and deflection of the structure is small, and the bridge can continue to be used normally. When removing or installing a certain inclined cable 12, the other inclined cables 12 can act as guides and support frames. It can be understood that in other embodiments, the inclined cable assembly 10 can also be multiple inclined cables 12 above the inclined cable 12 to be removed.

[0029] Please also read Figure 2 The roller system 20 includes a track wheel 21, a load wheel 22 and a connecting plate 23. The track wheel 21 is used for slidingly setting on the inclined cable assembly 10, the load wheel 22 is set below the track wheel 21, the load wheel 22 is used for carrying the target inclined cable 14, so that the target inclined cable 14 slides on the load wheel 22, and the connecting plate 23 is used for connecting the track wheel 21 and the load wheel 22.

[0030] Among them, the cable-stayed cable 12 that needs to be removed or installed is the target cable-stayed cable 14, which is carried on the load-bearing wheel 22. The target cable-stayed cable 14 slides on the load-bearing wheel 22, so the removed or installed cable-stayed cable 12 can be dragged along the bottom of the roller system 20, without the need for large-scale lifting equipment, and will not occupy the limited space on the bridge, thereby effectively improving the replacement efficiency.

[0031] In one embodiment, the roller system 20 includes a first roller 24 and a second roller 25, the track wheel 21 is rotatably mounted on the first roller 24, the load-bearing wheel 22 is rotatably mounted on the second roller 25, and the connecting plate 23 connects the first roller 24 and the second roller 25 to connect the track wheel 21 and the load-bearing wheel 22 as a whole.

[0032] On the basis of the above embodiment, further, each set of roller systems 20 is provided with two track wheels 21, two first rollers 24 and two connecting plates 23. The two track wheels 21 are rotatably mounted on the two first rollers 24, the two first rollers 24 are respectively mounted on the two connecting plates 23, and the two ends of the second roller 25 are respectively connected to the two connecting plates 23. The two track wheels 21 are symmetrically arranged about a midline, and the track wheels 21 are located on the midline, in the middle below the two track wheels 21.

[0033] Please also read Figure 3 In one embodiment, a plurality of mounting holes 232 are provided on the connecting plate 23, and the plurality of mounting holes 232 are spaced apart along the length direction of the connecting plate 23. The second roller 25 can be selectively installed in different mounting holes 232 to adjust the height of the load-bearing wheel 22 to meet the replacement requirements of different layers of inclined cables 12.

[0034] In one embodiment, the connecting rope 30 is connected to the first roller 24 to connect the plurality of roller systems 20 in series as a whole. In this embodiment, the connecting rope 30 is a steel wire rope, and the connecting plate 23 is a steel plate.

[0035] The working principle of the above-mentioned fast-replacement system for inclined cables is as follows:

[0036] First, determine the inclined cable 12 that needs to be replaced, and put the track wheel 21 of the roller system 20 on the upper or lower layer of the inclined cable 12 that needs to be replaced. Then use the connecting rope 30 to pull it upward from the bottom. After the first roller system 20 slides a certain distance, the second roller system 20 is installed and continues to move upward. In the same way, multiple roller systems 20 are connected in sequence until the first roller system 20 slides to the upper end of the inclined cable 12, and then the upper and lower ends of the connecting rope 30 are fixed to the cable tower and the main beam.

[0037] Next, disassemble the stay cable 12. When the stay cable 12 is unloaded, the weight of the entire cable is supported by the load wheel 22, and the entire stay cable 12 is gradually lowered to complete the unloading. The installation method of the new cable is the opposite of unloading. Pull the stay cable 12 from the main beam and slide it upward along the load wheel 22, gradually reaching the cable tower. Finally, the upper and lower stay cables 12 are anchored in place, and the jack tensioning nuts are tightened to complete the installation.

[0038] In the above-mentioned cable fast replacement system, the track wheel 21 is slidably arranged on the cable assembly 10, and the cable 12 to be removed or installed is carried on the load-bearing wheel 22 and slides on the load-bearing wheel 22, so the cable 12 to be removed or installed can be dragged along the bottom of the roller system 20, without the need for large-scale lifting equipment, and will not occupy the limited space on the bridge, effectively improving the replacement efficiency. Multiple groups of roller systems 20 are slidably arranged on the cable assembly 10, and multiple groups of roller systems 20 are connected in series to realize multi-point load-bearing of the target cable 14, reducing the requirements of the roller system 20.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A fast replacement system for a stay cable, characterized in that: include: A stay cable assembly and a plurality of roller systems slidably arranged on the stay cable assembly, wherein the plurality of roller systems are connected in series through a connecting rope, and the roller system comprises: A track wheel, used for being slidably arranged on the inclined cable assembly; a load-bearing wheel, disposed below the track wheel, the load-bearing wheel being used to bear a target stay cable so that the target stay cable slides on the load-bearing wheel; and A connecting plate is used to connect the track wheel and the load-bearing wheel.

2. The fast-changing system for inclined cables according to claim 1, characterized in that: The cable-stayed combination comprises a plurality of cables, and the plurality of cables are distributed in at least two rows and two columns.

3. The fast-changing system for inclined cables according to claim 1, characterized in that: The roller system comprises a first roller and a second roller, the track wheel is rotatably mounted on the first roller, the load-bearing wheel is rotatably mounted on the second roller, and the connecting plate connects the first roller and the second roller.

4. The fast-changing system for inclined cables according to claim 3, characterized in that: Each group of the roller systems is provided with two track wheels, two first rollers and two connecting plates. The two track wheels are rotatably mounted on the two first rollers, the two first rollers are mounted on the two connecting plates, and the two ends of the second roller are connected to the two connecting plates.

5. The fast-changing system for inclined cables according to claim 4, characterized in that: The two track wheels are symmetrically arranged about a center line, and the track wheels are located on the center line.

6. The fast-changing system for inclined cables according to claim 3, characterized in that: The connecting rope is connected to the first roller to connect multiple groups of the roller systems in series.

7. The fast-changing system for inclined cables according to claim 3, characterized in that: The connecting plate is provided with a plurality of mounting holes, which are spaced apart along the length direction of the connecting plate, and the second roller can be selectively mounted in the mounting holes.

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