A segmented traction system

Abstract

The application provides a segmented traction system, comprising: midspan traction components and edge span traction components segmented by cable pylons as nodes; the midspan traction components are arranged between the cable pylons; the edge span traction components are arranged between the cable pylons and anchorages; the midspan traction components and the edge span traction components both comprise traction ropes and winches arranged at both ends of the traction ropes; the midspan traction components further comprise anti-pulling parts arranged at the bottom of the cable pylons, which are used for providing anti-pulling forces in the direction opposite to the cable traction direction. Through the structural design of the midspan traction components, the edge span traction components and the anti-pulling parts of the midspan traction components, the environmental applicability and the construction cost can be improved, the bearing risk of the cable large-span traction can be effectively reduced, and the construction reliability can be ensured.

Description

Technical Field

[0001] This application relates to the field of suspension bridge construction technology, and more specifically, to a segmented traction system. Background Technology

[0002] A catwalk is a linear temporary construction path erected beneath and parallel to the main cable during the construction of a suspension bridge. Simultaneously, the catwalk is also the most important temporary structure traversing the bridge deck system, primarily relying on an overhead traction system for support. For complex terrains such as steep slopes or areas surrounded by water, to reduce construction difficulty or balance costs, the conventional continuous traction system is replaced with a segmented traction system.

[0003] While existing technologies have reduced construction difficulty and balanced construction costs by using segmented traction systems, they have also disrupted the continuity of traction. This means that cables that could be continuously erected need to be segmented, requiring modifications to the segmented traction system to accommodate cables that need to be erected continuously. This, in turn, leads to new technical problems such as cumbersome construction operations or reduced construction reliability. Utility Model Content

[0004] This application addresses the shortcomings of existing methods by proposing a segmented traction system to solve at least one technical problem of cumbersome construction operations or reduced construction reliability in related technologies.

[0005] This application provides a segmented traction system, including: a mid-span traction component and a side-span traction component segmented at the tower as nodes; The mid-span traction assembly is located between the cable towers; The side span traction assembly is located between the tower and the anchorage; Both the mid-span traction assembly and the side-span traction assembly include a traction rope and winches located at both ends of the traction rope. The mid-span traction assembly also includes a counter-pull section disposed at the bottom of the tower, used to provide a counter-pull force away from the cable traction direction.

[0006] Specifically, the main technical concept of this application lies in the segmented erection of the traction system using the cable towers as nodes, allowing the mid-span traction components and side-span traction components to be erected relying on anchorages and cable towers. Since the anchorages and cable towers are part of the suspension bridge's structure, this application reduces reliance on temporary facilities, thereby increasing its applicability and reducing construction costs. Simultaneously, by configuring the anti-tension section in the mid-span traction component, this application distributes the weight during cable traction, reducing the traction risk arising from the large-span straddling traction of the mid-span traction component and improving the reliability of cable traction.

[0007] Furthermore, the anti-pull portion includes: A counter-pull member installed at the top of the first cable tower; The cable release device is located at the bottom of the first cable tower; A commutator disposed between the pull member and the cable release device; A counter-tension rope that provides counter-tension; One end of the reverse rope is connected to the reverse member, and the other end is connected to the cable near the release device via the reversing device; The cable towers at both ends of the mid-span traction assembly are the first cable tower and the second cable tower, respectively.

[0008] Specifically, another technical concept of this application is that a reliable anti-pull section is formed by anti-pull members, cable release devices, reversing devices, and anti-pull ropes, so that the anti-pull members of the anti-pull section can be set on the first cable tower, thereby improving the structural reliability of the anti-pull section.

[0009] Furthermore, the segmented traction system provided in this application also includes: Sensing unit used to obtain the tension of the traction rope and the counter-traction rope; A control unit for connecting the winch, the anti-pull member, and the sensing unit, for adjusting the winch and the anti-pull member according to the sensing unit.

[0010] Specifically, another technical concept of this application is to further ensure the reliability of this application by setting up a sensing unit, so that the control unit can adjust the traction force output of the winch and the counter-tensioning member according to the tension of the traction rope and the counter-tensioning rope, thereby making the pulled cable in a controllable state and thus ensuring the reliability of this application.

[0011] In some possible embodiments, the anti-pull member is arranged parallel to the winch to form a parallel traction cableway between the first anchor and the second anchor. The first anchor is close to the first cable tower, and the second anchor is close to the second cable tower.

[0012] Specifically, another technical concept of this application is to establish a bidirectional traction cableway by using the parallel arrangement of the anti-pull member and the winch, so as to use the bidirectional traction of the subsequent main cable strands, thereby enabling the segmented traction system to be reused in both directions and reducing the overall construction cost of the suspension bridge.

[0013] Furthermore, the segmented traction system provided in this application also includes: a traction head sequentially disposed at the traction end of the cable and an anchor head disposed at the end of the traction end; The number of the traction heads is adapted to the number of the cable towers; The latter traction head is used to connect to the latter traction rope after the former traction head completes the traction of the cable through the former traction rope; The anchor head is used to pull the cable to the second anchor.

[0014] Specifically, another technical concept of this application lies in achieving traction switching between the mid-span traction assembly and the side-span traction assembly by using a traction head and an anchor head configured at the traction end of the cable. This reduces the need for manual intervention during continuous cable traction in the segmented traction system, effectively controlling the risks of high-altitude operations. Furthermore, the installation of the traction head eliminates the need for structural modifications to the original mid-span and side-span traction assemblies, avoiding the problem of decreased traction reliability caused by traction assembly modifications.

[0015] Furthermore, the traction head includes: A rope extending longitudinally; A rope clamp for attaching the rope to the traction end; A rope end located at one end of the rope body.

[0016] Specifically, another technical concept of this application is to achieve a detachable connection between the rope body and the traction end through a rope clamp, thereby making the traction head reusable and reducing the construction cost of cable conversion.

[0017] Furthermore, the rope clamp includes any one of a strap, a fastening clamp, or a fastening sleeve.

[0018] In some possible embodiments, a triangular connector is provided in the middle of the traction rope to divide the traction rope into a first rope segment and a second rope segment. The first and second corner points of the triangular connector are used to connect the first rope segment and the second rope segment, respectively, and the third corner point is used to connect the cable.

[0019] Specifically, another technical concept of this application is to optimize the force on the cable and the traction rope by setting a triangular connector, thereby improving the reliability of the traction rope pulling the cable and reducing the traction risk.

[0020] Furthermore, the triangular connector includes a rod and flexible steel wire ropes connected to both ends of the rod.

[0021] Specifically, another technical concept of this application is that by setting up a flexible steel wire rope, the traction node of the cable can be adjusted in real time according to the traction state, and the traction force of the cable can be adapted in real time to optimize the traction force output of the traction rope.

[0022] Furthermore, shackles are provided at the first corner point, the second corner point, and the third corner point.

[0023] Specifically, another technical concept of this application is to use shackles to achieve quick disassembly of the connection between the cable and the traction rope, thereby improving construction efficiency.

[0024] The beneficial technical effects of the technical solutions provided in this application include: The segmented traction system can be erected using existing anchorages and pylons of the suspension bridge, reducing environmental dependence during erection and making it suitable for complex terrains, such as those surrounded by water or with steep slopes, effectively reducing construction difficulty. Furthermore, the mid-span and side-span traction components utilize only winches and traction rope assemblies, resulting in a simple and reliable structure. This application also incorporates a counter-tensioning section in the mid-span traction component to improve the reliability of the mid-span cable traction and reduce traction risks. In addition, this application features a traction end for the cable, using a reusable traction head to achieve traction switching between the mid-span and side-span traction components in the segmented traction system, reducing manual intervention and eliminating the need to modify the traction components. This controls the risks of working at heights, ensures the structural reliability of the traction components, and effectively reduces construction costs.

[0025] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a segmented traction system provided in an embodiment of this application; Figure 2 for Figure 1 An enlarged view of point A; Figure 3 for Figure 1 Enlarged schematic diagram of the B direction; Figure 4 A top view schematic diagram of a segmented traction system provided in an embodiment of this application; Figure 5 A schematic diagram of the structure of the traction end of a cable provided in an embodiment of this application; Figure 6 This is a schematic diagram of the operation of a triangular connector provided in one embodiment of this application; Figure 7 This application provides a schematic diagram of the operation of erecting a gantry using a segmented traction system, as an embodiment of the present application. Reference numerals: 1. First anchorage; 2. First tower; 3. Second tower; 4. Second anchorage; 5. Water body; 6. Mid-span traction assembly; 7. Side-span traction assembly; 8. Cable; 9. Double-line winch; 10. Gantry; 21. Temporary tower-locking platform; 61. Mid-span winch; 62. Mid-span traction rope; 63. Reverse pull section; 71. Side-span winch; 72. Side-span traction rope; 81. Traction end; 82. Traction head; 83. Anchor head; 8 4. Gantry load-bearing cable; 85. Gantry positioning cable; 621. First rope segment; 622. Second rope segment; 623. Triangular connector; 631. Reverse tension member; 632. Cable release device; 633. Reversing device; 634. Reverse tension rope; 635. Cable buckle; 821. Rope body; 822. Rope clamp; 823. Rope end; 623a. Rod; 623b. Flexible steel wire rope; 623c. Shackle; 633a. Fixed pulley; 633b. Base. Detailed Implementation The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0027] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by this art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0029] This application primarily relates to a segmented traction system, in which a mid-span traction component and a side-span traction component are erected respectively, relying on pylons and anchorages. Because the mid-span and side-span traction components are erected using the existing structures of the suspension bridge—pylons and anchorages—the need for temporary facilities is reduced, thereby removing environmental restrictions and allowing this application to be used in complex environments such as those surrounded by water or with steep terrain, thus reducing the construction cost of suspension bridges. Simultaneously, the mid-span traction component also utilizes anti-sag adjustment and redundancy control through anti-sag sections, improving the safety and reliability of the cable during long-distance traction in the mid-span.

[0030] The research and development concept of this application includes: using the pylons and anchorages of a suspension bridge as structural supports, and constructing a mid-span traction component and a side-span traction component through a simple structure combining winches and traction ropes, thereby improving the environmental adaptability of this application. Simultaneously, the simple structural composition of the segmented traction system greatly ensures the reliability of this application and reduces construction risks. Furthermore, based on the large-span traction requirements of the mid-span traction component, this application further incorporates a counter-tension section within the mid-span traction component. This counter-tension section provides a counter-tension force opposing the cable traction direction, thereby partially bearing the cable's traction force and providing buffer redundancy, improving the safety and reliability of the cable mid-span traction.

[0031] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0032] Alternatively, please refer to Figure 1 This is a schematic diagram of the structure of a segmented traction system provided in an embodiment of this application.

[0033] Specifically, this application uses a double-tower suspension bridge as an example to illustrate the structural composition of a segmented traction system (unless otherwise specified, the technical solutions provided in this application can be understood with reference to a double-tower suspension bridge). A double-tower suspension bridge refers to a bridge in which cables 8 (or steel chains) suspended and anchored to both banks (or both ends of the bridge) by two towers serve as the main load-bearing components of the superstructure. In this application, the towers at both ends of the mid-span traction component 6 are defined as the first tower 2 and the second tower 3, respectively. The anchorage closer to the first tower 2 is the first anchorage 1, and the anchorage closer to the second tower 3 is the second anchorage 4. That is, the mid-span traction component 6 of this application includes a traction structure disposed between the first tower 2 and the second tower 3, and the side-span traction component 7 includes a traction structure disposed between the first anchorage 1 and the first tower 2, and between the second tower 3 and the second anchorage 4. Meanwhile, the mid-span traction assembly 6 includes a mid-span winch 61 located at the top of the first tower 2 and the second tower 3, and a mid-span traction rope 62 located between the two mid-span winches 61. The side-span traction assembly 7 includes side-span winches 71 located at the tops of the first anchorage 1, the first tower 2, the second tower 3, and the second anchorage 4, as well as side-span traction ropes 72 located between the two side-span winches 71 located at the tops of the first anchorage 1 and the first tower 2, and between the two side-span winches 71 located at the tops of the second tower 3 and the second anchorage 4. The mid-span traction assembly 6 also includes a counter-tensioning section 63 located at the bottom of the first tower 2. Because cable 8 needs to cross the water body 5 below (or the mountain body where the terrain is steep) during the traction process via the mid-span traction rope 62, as the crossing length of cable 8 increases, the weight of cable 8 causes its sag to increase, which can easily lead to the weight of cable 8 exceeding the tension limit of the release device 632. This can cause cable 8 stored in the release device 632 to be released rapidly, resulting in cable 8 becoming uncontrollable and rapidly plunging into the water body 5 when traction is applied between the first tower 2 and the second tower 3, causing a construction safety accident. The presence of the counter-tension section 63 provides a counter-tension force opposite to the traction direction of cable 8, distributing the weight of cable 8 during the traction process, thereby controlling the sag of cable 8 and reducing the risk of cable 8 becoming uncontrollable. At the same time, the counter-tension section 63 can also provide counter-tension redundancy during the uncontrollable process of cable 8, buffering the plunging cable 8, further improving the reliability of this application. It is worth explaining that sag refers to the vertical distance between the lowest point of cable 8 and the suspension point.

[0034] Optionally, this application can also be used for three-tower suspension bridges. Based on the description of the segmented traction system provided in this application for a two-tower suspension bridge, it can be understood that a three-tower suspension bridge is configured with two sets of mid-span traction components 6. The middle tower of the three towers serves as both the second tower 3 of the first tower 2 on the side of the first anchorage 1 and the first tower 2 of the second tower 3 on the side of the second anchorage 4, thus forming two sets of mid-span traction components 6. Similarly, this application can theoretically also be used for four-tower suspension bridges or suspension bridges with more than four towers, although four-tower and higher suspension bridges have not yet been implemented.

[0035] Optionally, the anti-tension section 63 of the mid-span traction component 6 of the three-tower suspension bridge is symmetrically arranged at both ends of the suspension bridge, that is, one anti-tension section 63 is arranged at the first tower 2 near the first anchor 1, and the other anti-tension section 63 is arranged at the second tower 3 near the second anchor 4, thereby reducing the construction difficulty.

[0036] Further, please refer to Figure 2 for Figure 1 An enlarged schematic diagram of point A.

[0037] Specifically, the anti-pull section 63 includes: an anti-pull member 631 disposed at the top of the first tower 2, a cable release device 632 disposed at the bottom of the first tower 2, a reversing device 633 disposed between the anti-pull member 631 and the cable release device 632, and an anti-pull rope 634 providing anti-pull force. One end of the anti-pull rope 634 is connected to the anti-pull member 631, and the other end is connected to the cable 8 near the cable release device 632 via the reversing device 633. That is, the anti-pull member 631 provides structural support through the top of the first tower 2, and the reversing device 633 is used to pull the cable 8 near the cable release device 632. Since the cable 8 is released through the cable release device 632, the risk of loss of control of the cable 8 arises from the weight of the cable 8 exceeding the release force limit of the cable release device 632, causing the cable 8 stored in the cable release device 632 to be released rapidly, thereby causing a safety accident where the cable 8 plunges into the water body 5 below. This application uses a locking buckle at the reverse end of the reverse pull rope 634 to secure the cable 8 at the outlet of the cable release device 632. This provides a counter-pulling force opposite to the traction direction of the cable 8, effectively pulling the cable 8 in the opposite direction. This prevents the cable 8 from exerting excessive tension on the cable release device 632, ensuring its normal operation and improving the reliability of the cable 8's mid-span traction. Simultaneously, when the cable 8 suddenly loses control, the reverse pull rope 634 can also provide a counter-pulling force to cushion the cable 8's descent, effectively preventing it from rapidly plunging into the water body 5 below. This provides redundant safety for the cable 8's mid-span traction, further enhancing the reliability of this application.

[0038] Optionally, the commutator 633 includes a base 633b fixed to the mounting base and a fixed pulley 633a disposed on the base 633b and having a degree of rotational freedom, thereby realizing the reverse pull reversal of the pull rope 634 from the top of the first tower to the cable 8.

[0039] Alternatively, the installation foundation can be either the ground or the tower body of the cable tower.

[0040] Optionally, the anti-pull element 631 is configured as a winch. It is worth explaining that a winch is a small, lightweight lifting device that uses a drum to wind a wire rope or chain to lift or pull heavy objects.

[0041] Optionally, the pull rope 634 is detachably connected to the cable 8 via a buckle 635.

[0042] Optionally, this application also includes: a sensing unit for acquiring the tension force of the traction rope and the counter-tension rope 634; and a control unit for connecting the winch, the counter-tension member 631, and the sensing unit. The control unit can adjust the traction force output by the winch and the counter-tension member 631 based on the sensing data acquired by the sensing unit, i.e., the tension force, thereby making the traction of the cable 8 controllable and improving the reliability of the cable 8 traction.

[0043] Further, please refer to Figure 3 for Figure 1 Enlarged schematic diagram of the B direction.

[0044] Specifically, the anti-pull member 631 is set parallel to the winch on the temporary tower platform 21 to form a parallel traction cableway between the first anchorage 1 and the second anchorage 4. Since the segmented traction assembly provided in this application needs to provide traction for not only the cables 8 of the catwalk but also the strands of the main cable, if only unidirectional reciprocating traction is performed using the segmented traction assembly, the catwalk cables 8 and the main cable would require at least hundreds of tractions, resulting in low construction efficiency. Therefore, this application provides a side-span winch 71, a mid-span winch 61, an anti-pull member 631, and a double-line winch 9 on the first anchorage 1, the first tower 2, the second tower 3, and the second anchorage 4, thereby forming a double-line traction cableway between the first anchorage 1 and the second anchorage 4. The double-line winch 9 refers to any winch other than the side-span winch 71, the mid-span winch 61, and the anti-pull member 631. Temporary tower platform 21 refers to a temporary steel tower structure erected on the first tower 2 or the second tower 3, used to provide installation space for construction facilities and construction personnel. Catwalk refers to a linear temporary construction access road erected below and parallel to the main cable during suspension bridge construction. Main cable refers to a cable 8 composed of at least hundreds of strands.

[0045] To explain the structural composition of the parallel double-line traction cableway, please refer to [reference needed]. Figure 4This is a top view schematic diagram of a segmented traction system provided in an embodiment of this application.

[0046] Specifically, the side-span winch 71 installed at the top of the first anchorage 1 and the first tower 2, the mid-span winch 61 installed at the top of the first tower 2 and the second tower 3, and the side-span winch 71 installed at the top of the second tower 3 form the first traction cableway. After completing the traction of the mid-span cable 8, the anti-pull member 631, together with the double-line winch 9, forms the second traction cableway. That is, the first traction cableway and the second traction cableway can be used to erect the cable 8 in parallel, which can effectively improve the erection efficiency of the suspension bridge cable 8.

[0047] Further, please refer to Figure 5 This is a schematic diagram of the structure of the traction end 81 of the cable 8 provided in an embodiment of this application.

[0048] Specifically, this application includes a traction head 82 sequentially arranged at the traction end 81 of the cable 8 and an anchor head 83 disposed at the end of the traction end 81; the number of traction heads 82 is adapted to the number of cable towers; a subsequent traction head 82 is used to connect to the subsequent traction rope after the previous traction head 82 has completed the traction of the cable 8 through the previous traction rope; the anchor head 83 is used to pull the cable 8 to the second anchor 4. That is, this application realizes the segmented conversion of cable 8 traction through each set of traction heads 82 and anchor heads 83. Figure 1 Cable 8 first passes through Figure 5The leftmost traction head 82 is connected to the side span traction assembly 7 between the first anchorage 1 and the first tower 2. The side span traction assembly 7 pulls the side span traction rope 72 through the side span winch 71, thus pulling the cable 8 to the top of the first tower 2. At the top of the first tower 2, the traction head 82 in the middle of the traction end 81 is connected to the middle span traction rope 62. Then, the connection between the leftmost traction head 82 and the side span traction rope 72 is released, thus completing the conversion of the cable 8 from the side span traction assembly 7 to the middle span traction assembly 6. Subsequently, the cable 8 can be pulled to the top of the second tower 3 by the middle span winch 61 and the middle span traction rope 62. Similarly, at the top of the second tower 3, the anchor head 83 connects to the next segment's side span traction rope 72, and the connection between the traction head 82 in the middle of the traction end 81 and the central span traction rope 62 is released. This completes the transition of the cable 8 from the central span traction assembly 6 to the next segment's side span traction assembly 7, allowing the cable 8 to be pulled to the second anchor 4 via the side span traction assembly 7, thus completing the continuous traction of the cable 8 from the first anchor 1 to the second anchor 4. Since the above process relies solely on the traction head 82 configured at the traction end 81 of the cable 8, no additional structural modifications to the side span traction assembly 7 and the central span traction assembly 6 are required, ensuring the structural simplicity of the segmented traction system. This results in good structural reliability and reduces traction risks. Furthermore, the switching operation of the traction head 82 between the side span traction rope 72 and the central span traction rope 62 is very simple, requiring minimal manual intervention and reducing the operational risks for construction workers operating at heights.

[0049] Optionally, the traction head 82 includes: a longitudinally extending rope body 821; a rope clamp 822 for attaching the rope body 821 to the traction end 81; and a rope head 823 disposed at one end of the rope body 821. That is, the traction head 82 can be detachably connected to the traction end 81 of the cable 8 by detaching and attaching the rope clamp 822, thereby making the traction head 82 reusable and further reducing construction costs.

[0050] Optionally, the rope clamp 822 includes any one of a strap, a fastening clamp, or a fastening sleeve. It is worth noting that the rope clamp 822 needs to ensure a reliable connection between the rope body 821 and the traction end 81; that is, any fastening structure that provides both detachable functionality and reliable connection can be used in this application.

[0051] Optionally, the rope body 821 is a steel wire rope.

[0052] Further, please refer to Figure 6 This is a schematic diagram of the operation of a triangular connector 623 provided in an embodiment of this application.

[0053] Specifically, taking the mid-span traction rope 62 as an example, a triangular connector 623 is provided in the middle of the traction rope to divide the traction rope into a first rope segment 621 and a second rope segment 622; the first and second corner points of the triangular connector 623 are used to connect the first rope segment 621 and the second rope segment 622, respectively, and its third corner point is used to connect the cable 8. This application uses the triangular connector 623 to balance the forces among the first rope segment 621, the second rope segment 622, and the cable 8, thereby improving the stability of the cable 8 during the traction process.

[0054] Optionally, the triangular connector 623 includes a rod 623a and flexible steel wire ropes 623b connected to both ends of the rod 623a. The flexible steel wire ropes 623b are used to automatically adapt the position of the first triangular point where the cable 8 is connected to it as the traction process progresses, so that the forces on the cable 8, the first rope segment 621 and the second rope segment 622 are in the most reasonable balance state, thereby improving the reliability of the cable 8 traction.

[0055] Optionally, the rod 623a is configured as a longitudinally extending metal plate with shackle openings 623c at both ends.

[0056] Optionally, shackle 623c is fitted onto flexible wire rope 623b.

[0057] Optionally, shackles 623c are provided at the first, second, and third corner points. This application provides convenience for cable 8 installation through shackles 623c. Taking the mid-span traction assembly 6 as an example, inserting the rope end 823 into the shackle 623c achieves effective connection between the traction end 81 and the mid-span traction rope 62; removing the rope end 823 from the shackle 623c disengages the connection between the traction end 81 and the mid-span traction rope 62.

[0058] Optionally, the triangular connector 623 can be configured as an integral plate, with shackle 623c holes provided at each corner for the shackle 623c to be inserted.

[0059] Further, refer to Figures 1 to 7 The working principle of this application will be explained. Figure 7 This application provides a schematic diagram of the operation of erecting a gantry 10 using a segmented traction system, according to one embodiment of the present application.

[0060] Specifically, this application is mainly used for the erection of suspension bridge cables 8. Suspension bridge cables 8 include catwalk cables and main cables. The catwalk includes gantry load-bearing cables 84, gantry positioning cables 85, and catwalk load-bearing cables, while the main cables are composed of multiple strands. Therefore, after the construction of infrastructure such as anchorages and towers is completed, this application first installs corresponding side-span winches 71, mid-span winches 61, and anti-pull components 631 at the first anchorage 1, first tower 2, second tower 3, and second anchorage 4, respectively. Then, through methods such as ship transport, rocket launch, or drone operation, the mid-span traction rope 62 is made to cross from the first tower 2 to the second tower 3, and both ends of the mid-span traction rope 62 are connected to the mid-span winches 61 installed on the temporary tower-locking platform 21. Simultaneously, by lowering the side-span traction rope 72 from the first tower 2 and the second tower 3, the side-span traction rope 72 is fixed to the side-span winches 71 on the anchorages. At this point, the installation of the mid-span traction assembly 6 and the side-span traction assembly 7 is complete. Then, the gantry load-bearing cable 84 of the mid-span is installed via the mid-span traction assembly 6. Since the gantry load-bearing cable 84 of the mid-span can only rely on the mid-span traction rope 62 for traction and load bearing, during the traction process of the gantry load-bearing cable 84, the unwinding end of the mid-span gantry load-bearing cable 84 is pulled back by the counter-pull section 63. That is, the two mid-span winches 61 simultaneously wind and unwind. During the winding of the mid-span traction rope 62, the counter-pull section 63 simultaneously pulls back the gantry load-bearing cable 84 of the mid-span through the counter-pull rope 634, thereby ensuring the safe erection of the gantry load-bearing cable 84 of the mid-span (refer to...). Figure 2 (For understanding). Simultaneously, the gantry load-bearing cables 84 of the side span are installed via the side span traction assembly 7. Since the span of the side span gantry load-bearing cables 84 is relatively small, they can be installed by pulling from the anchorage towards the tower. After completing the installation of the gantry load-bearing cables 84 in the middle span and side spans, the gantry positioning cables 85 and gantry 10 can be installed simultaneously. The gantry positioning cables 85 in the middle span are also pulled from the first tower 2 to the second tower 3. The gantry positioning cables 85 in the middle span are pulled by the middle span traction rope 62. A set of gantry 10 is installed after each preset pulling distance, and the two sides of the gantry 10 are fixed by the gantry positioning cables 85 (refer to...). Figure 7(For understanding). The gantry positioning cable 85 of the middle span can be pulled directly from the top of the first tower 2, or it can be pulled synchronously using the anti-pull member 631. In contrast, for the side spans, the gantry positioning cable 85 of the side spans can be installed first, and then the gantry 10 of the side spans can be installed at predetermined intervals by lowering it from the top of the first tower 2, and positioned using the side span positioning cable, thereby improving the installation efficiency of the gantry positioning cable 85 and gantry 10 of the side spans. After the gantry 10 structure of the middle span and side spans (including the gantry load-bearing cable 84, gantry positioning cable 85, and gantry 10) is completed, the catwalk load-bearing cable can be installed. Since the catwalk needs to be continuously erected to ensure its integrity, the catwalk load-bearing cable needs to be installed by a traction conversion method. At the first anchorage 1, the leftmost traction head 82 is fitted onto the triangular point of the triangular connector 623 of the side span traction rope 72. Then, the side span winch 71 simultaneously pulls the traction end 81 of the catwalk load-bearing cable to the top of the first tower 2. At the top of the first tower 2, the middle traction head 82 is fitted onto the triangular connector 623 of the middle span traction rope 62, and the connection between the leftmost traction head 82 and the triangular connector 623 of the side span traction rope 72 is released. Then, the traction end 81 is pulled to the top of the second tower 3 by the middle span winch 61. At the top of the second tower 3, the anchor head 83 is connected to the triangular connector 623 of the next section of the side span traction rope 72, contacting the connection between the middle traction head 82 and the middle span traction rope 62. The traction end 81 is then pulled to the second anchorage 4 by the next section of the side span winch 71, thus completing the continuous traction of the catwalk load-bearing cable (refer to [reference needed]). Figure 4 , 5 Understanding 6, the triangular connector 623 can be used throughout the entire process, not just the catwalk load-bearing cable. After the catwalk load-bearing cable is pulled, the catwalk slabs and other facilities are laid based on the catwalk load-bearing cable and gantry 10, completing the installation of the entire catwalk. Finally, the strands of the main traction cable can be installed through the rollers set on the catwalk. Since both the catwalk load-bearing cable and the strands can be supported by the installed structure, no additional support from the anti-pull part 63 is required. At this point, the segmented traction system can be constructed as a dual-line parallel structure. By operating the first cableway line and the second cableway line independently, the traction efficiency of the catwalk load-bearing cable and the strands can be improved.

[0061] In summary, this application provides a segmented traction system that utilizes the anchorages and tower structures of the suspension bridge itself. The segmented mid-span traction assembly 6 and side-span traction assemblies 7 reduce the environmental requirements of this application, making it adaptable to harsh environments such as those surrounded by mountains or with steep terrain, thus improving its applicability. Furthermore, this application eliminates the need for additional temporary facilities, effectively reducing construction costs. Simultaneously, the mid-span traction assembly 6 of this application is equipped with a counter-tension section 63, which provides additional counter-tension support and redundancy during the traction of the long-span cables 8 (mainly the gantry load-bearing cables 84), improving the reliability and safety of the suspension bridge cable traction.

[0062] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in related technologies that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0063] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0064] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0065] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0067] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A segmented traction system, characterized in that, include: The mid-span traction assembly and the side-span traction assembly are segmented with the tower as the node; The mid-span traction assembly is located between the cable towers; The side span traction assembly is located between the tower and the anchorage; Both the mid-span traction assembly and the side-span traction assembly include a traction rope and winches located at both ends of the traction rope. The mid-span traction assembly also includes a counter-pull section disposed at the bottom of the tower, used to provide a counter-pull force away from the cable traction direction.

2. The segmented traction system as described in claim 1, characterized in that, The reverse pull portion includes: A counter-pull member installed at the top of the first cable tower; The cable release device is located at the bottom of the first cable tower; A commutator disposed between the pull member and the cable release device; A counter-tension rope that provides counter-tension; One end of the reverse rope is connected to the reverse member, and the other end is connected to the cable near the release device via the reversing device; The cable towers at both ends of the mid-span traction assembly are the first cable tower and the second cable tower, respectively.

3. The segmented traction system as described in claim 2, characterized in that, Also includes: Sensing unit used to obtain the tension of the traction rope and the counter-traction rope; A control unit for connecting the winch, the anti-pull member, and the sensing unit, for adjusting the winch and the anti-pull member according to the sensing unit.

4. The segmented traction system as described in claim 2, characterized in that, The anti-pull member is arranged parallel to the winch and is used to form a parallel traction cableway between the first anchor and the second anchor. The first anchor is close to the first cable tower, and the second anchor is close to the second cable tower.

5. The segmented traction system as described in claim 4, characterized in that, Also includes: A traction head is sequentially arranged at the traction end of the cable, and an anchor head is disposed at the end of the traction end; The number of the traction heads is adapted to the number of the cable towers; The latter traction head is used to connect to the latter traction rope after the former traction head completes the traction of the cable through the former traction rope; The anchor head is used to pull the cable to the second anchor.

6. The segmented traction system as described in claim 5, characterized in that, The traction head includes: A rope extending longitudinally; A rope clamp for attaching the rope to the traction end; A rope end located at one end of the rope body.

7. The segmented traction system as described in claim 6, characterized in that, The rope clamp includes any one of a strap, a fastening clamp, or a fastening sleeve.

8. The segmented traction system as described in claim 1, characterized in that, A triangular connector is provided in the middle of the traction rope to divide the traction rope into a first rope segment and a second rope segment. The first and second corner points of the triangular connector are used to connect the first rope segment and the second rope segment, respectively, and the third corner point is used to connect the cable.

9. The segmented traction system as described in claim 8, characterized in that, The triangular connector is composed of rods, and flexible steel wire ropes are connected to both ends of the rods.

10. The segmented traction system as described in claim 8, characterized in that, The first corner point, the second corner point, and the third corner point are all equipped with shackles.

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