Lifting and transverse moving device for main cable strand of rotary cable of suspension bridge
By adopting a combined structure of gantry columns, gantry beams and lateral movement devices in the main cable strand lifting device of the suspension bridge slewing cable, the problems of bulky structure, large steel consumption and complicated manual operation in the existing technology are solved, and efficient and safe strand lateral movement operation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2026-03-31
AI Technical Summary
The existing suspension bridge slewing cable main cable strand lateral movement device is bulky, uses a large amount of steel, has high sliding friction, is complicated to operate manually and has high safety risks, and is time-consuming and labor-intensive.
It adopts a combined structure of gantry columns, gantry beams, lateral movement device and operating platform. It uses fixed pulleys and longitudinal traction ropes to achieve stable lateral movement of the cable strands, reduce sliding friction, simplify the operation process and reduce the need for manual operation.
This technology enables the lifting and lateral movement of the main cable strands of the suspension bridge's slewing cable, which is simple in structure and easy to operate. It improves work efficiency, reduces safety risks and operational difficulty, and reduces the number of tools and installation time.
Smart Images
Figure CN224063290U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of suspension bridge slewing cable erection, specifically relating to a device for lifting and lateral movement of the main cable strands of a suspension bridge slewing cable. Background Technology
[0002] In conventional suspension bridges, the main cable strands are arranged in the same direction along the bridge. When lifting and moving the strands laterally, cable grippers are installed on the strands at different mileage points on the cable saddle side. The cables are simultaneously retrieved via a gantry crane, allowing the entire strand to be lifted. Then, a lateral chain hoist is used for traction to complete the lateral movement. In slewing cable suspension bridges, the main cable strands in the slewing anchorage area are arranged in a slewing structure. The slewing strands are not in the same direction as the mid-span and side-span strands, exhibiting a changing slewing angle. Therefore, a specialized device for lateral movement of the main cable strands is required.
[0003] Patent CN118145433A discloses a lateral movement device, as shown in Figures 6 and 7 of the patent, which consists of a cantilever truss plate and a top sliding beam. The cantilever truss plate is made of double rows of I-beams welded together to form a truss structure. Each set of truss plates consists of two trusses connected horizontally. The upper chord of the truss plate serves as both a load-bearing structure and a sliding track. The distribution beam acts as the direct load-bearing beam for the lifting cable strands, transferring the load to the upper chord. Anchoring ends are provided at both ends of the truss plate. The distribution beam is pulled by a chain hoist to make the lifting cable strands slide on the upper chord. The advantage of this lateral movement device is that the cantilever truss plate has a large load-bearing capacity. The disadvantages are: ① The structure is heavy and uses a large amount of steel; ② The distribution beam slides on the upper chord, which requires frequent application of grease to the upper chord to reduce frictional resistance; ③ The traction power for the sliding of the distribution beam requires manual operation of the longitudinal shift chain hoist for tightening. The longitudinal shift chain hoist tightening requires two people to operate synchronously and maintain the same speed to avoid the distribution beam derailing or jamming with the upper chord due to uneven speed. This results in long working hours and high safety risks for the workers; ④ After the cable strands are moved to the lateral position, the distribution beam needs to be pulled back to the cable strand lifting position for the next cable strand lifting. This process is time-consuming and labor-intensive.
[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a suspension bridge slewing cable main cable strand lifting and lateral movement device, which has a simple structure, is easy to operate and convenient for reuse.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A lifting and lateral movement device for the main cable strand of a suspension bridge slewing cable includes a gantry column installed on the anchorage outside the annular channel of the anchorage, a gantry beam erected above the annular channel of the anchorage via the gantry column, a lateral movement device installed on the gantry beam, and an operating platform built within the annular channel; fixed pulleys are installed on opposite sides of the gantry column;
[0008] The lateral moving device includes a connecting steel plate, lateral moving rollers mounted on the connecting steel plate and moving along the gantry beam, and a connecting frame fixed under the connecting steel plate; the connecting frame is equipped with a cable lifting chain hoist and a longitudinal traction rope; one end of the longitudinal traction rope is fixed to the connecting frame, and the other end of the longitudinal traction rope is also fixed to the connecting frame after passing through two fixed pulleys in sequence, with the portion of the longitudinal traction rope near one of the fixed pulleys hanging down to form a traction part.
[0009] Furthermore, the cross-section of the gantry beam is I-shaped, and rail grooves are formed on both sides of the gantry beam; the transverse moving rollers include 2-6 symmetrically arranged rollers, and the transverse moving rollers travel along the inner bottom surface of the rail grooves.
[0010] Furthermore, a connecting column is fixed on the connecting steel plate, and a horizontal limiting roller is installed at the top of the connecting column. The horizontal limiting roller travels along the outer end face of the upper groove wall of the rail groove.
[0011] Furthermore, the connecting frame includes a frame body and two longitudinal traction anchors fixed on the two sides of the frame body, with each of the two longitudinal traction anchors facing a fixed pulley; a lifting chain hoist fixing hole is provided in the middle of the frame body.
[0012] Furthermore, the operating platform includes a cable lifting and lateral movement operating platform flush with the top surface of the anchorage and a cable saddle entry operating platform located at the bottom of the annular channel; the edge of the cable lifting and lateral movement operating platform is equipped with protective railings.
[0013] Furthermore, the suspension bridge slewing cable main cable strand lifting and lateral movement device also includes a strand limiting slot for holding the main cable strands, and the strand lifting chain hoist lifts the strand limiting slot through a hook and a rope.
[0014] Furthermore, the cable limiting slot includes a slot body and a square slot formed on the slot body.
[0015] Furthermore, the outer walls on both sides of the square card slot are respectively provided with card slot hanging holes and card slot hooks, and the two ends of the hanging rope are respectively connected to the card slot hanging holes and card slot hooks.
[0016] Furthermore, one end of the lifting rope passes through the slot and is self-anchored, while the other end of the lifting rope is fixed with a rope loop, which is sleeved on the slot hook.
[0017] Furthermore, the gantry beam is installed on the top of the gantry column via a connecting flange, and the bottom of the gantry column is provided with embedded parts pre-embedded in the anchorage.
[0018] The beneficial effects of this utility model are:
[0019] This utility model features a simple structure, clear force distribution, convenient installation and disassembly, and high turnover rate. The lateral moving device travels along the inner bottom surface of the gantry beam, with the center of gravity below the steel section, ensuring good stability. The sliding device is equipped with a set of cable lifting chain hoist and a cable limit slot, requiring fewer tools and allowing for fast installation, saving time and effort. The lateral moving device has low sliding friction, and both ends are connected to the same longitudinal traction rope. By using the fixed pulley on the gantry column and pulling the longitudinal traction rope by the operator, the sliding device can be moved forward and backward laterally. Combined with the lifting effect of the cable lifting chain hoist on the main cable strand, the operator can achieve the lateral movement of the main cable strand from the cable horizontal traction limit platform to the main cable saddle in a time-saving and labor-saving manner. Attached Figure Description
[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:
[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.
[0022] Figure 2 This is a schematic diagram of the structure of the gantry column according to an embodiment of the present utility model.
[0023] Figure 3 This is a schematic diagram of the structure of the lateral movement device according to an embodiment of the present utility model.
[0024] Figure 4 for Figure 3 Schematic sectional view along the central II direction.
[0025] Figure 5 This is a schematic diagram of the cable limit groove according to an embodiment of the present invention.
[0026] In the diagram: 1-Anchor, 11-Horizontal traction limiting platform for cable strands, 12-Lifting and lateral movement operation platform for cable strands, 121-Guardrail, 13-Saddle entry operation platform for cable strands, 2-Gantry frame beam, 21-Gantry frame column, 211-Embedded part, 22-Fixed pulley, 23-Longitudinal traction rope, 24-Connecting flange, 3-Large-lateral movement device, 31-Connecting steel plate, 32-Large-lateral movement roller, 33-Horizontal limiting roller, 34-Connecting frame, 341-Longitudinal traction anchor head, 342-Lifting chain hoist fixing hole, 35-Connecting column, 4-Cable strand limiting slot, 41-Slot body, 42-Slot hanging hole, 43-Slot hook, 44-Lifting rope, 45-Rope ring, 5-Cable strand lifting chain hoist, 6-Main cable strand. Detailed Implementation
[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.
[0028] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.
[0030] like Figures 1 to 5 As shown, a suspension bridge slewing cable main cable strand lifting and lateral movement device includes a gantry column installed on the anchor 1 outside the annular channel of the anchor 1, a gantry beam 2 erected above the annular channel of the anchor 1 via the gantry column 21, a lateral movement device 3 installed on the gantry beam 2, and an operating platform built inside the annular channel; fixed pulleys 22 are installed on the opposite side of the gantry column;
[0031] The lateral moving device 3 includes a connecting steel plate 31, a lateral moving roller 32 mounted on the connecting steel plate 31 and moving along the gantry beam 2, and a connecting frame 34 fixed under the connecting steel plate 31; the connecting frame 34 is equipped with a cable lifting chain hoist 5 and a longitudinal traction rope 23; one end of the longitudinal traction rope 23 is fixed on the connecting frame 34, and the other end of the longitudinal traction rope 23 is also fixed on the connecting frame 34 after passing through two fixed pulleys 22 in sequence; the part of the longitudinal traction rope 23 near one of the fixed pulleys 22 hangs down to form a traction part.
[0032] Furthermore, such as Figure 4 As shown, the cross section of the gantry beam 2 is I-shaped, and rail grooves are formed on both sides of the gantry beam 2; the transverse moving rollers 32 include 2-6 symmetrically arranged, and the transverse moving rollers 32 travel along the inner bottom surface of the rail grooves.
[0033] Furthermore, such as Figure 1 , Figure 3 , Figure 4 As shown, a connecting column 35 is fixed on the connecting steel plate 31. The connecting column 35 can be a φ20mm screw. A horizontal limiting roller 33 is installed at the top of the connecting column 35. The horizontal limiting roller 33 travels along the outer end face of the upper groove wall of the rail groove.
[0034] Furthermore, such as Figure 1 , Figure 3 , Figure 4 As shown, the connecting frame 34 includes a frame body and two longitudinal traction anchor heads 341 fixed on the two sides of the frame body. The two longitudinal traction anchor heads 341 are respectively facing a fixed pulley 22. A lifting chain hoist fixing hole 342 is provided in the middle of the frame body. The cable lifting chain hoist 5 is a hand chain hoist in the prior art. The hook of the cable lifting chain hoist 5 is hooked and fixed in the lifting chain hoist fixing hole 342.
[0035] In one specific embodiment, such as Figures 1 to 4As shown, the gantry beam 2 is an H300×300 steel beam, and the gantry columns 21 are two 20a I-beam columns; one gantry column 21 is located at the edge of the annular channel, and the other gantry column 21 is set outside the cable strand horizontal traction limiting platform 11, so that the gantry beam 2 can cover the cable strand horizontal traction limiting platform 11 and the width of the annular channel; the gantry column 21 is welded and fixed to the pre-embedded part 211 in the concrete of the anchor 1, and the gantry beam 2 is connected by flange 2. 4. A transverse moving device 3 is installed on the top of the gantry column 21 and on the lower flange plate (i.e., the inner bottom surface of the rail groove) of the H-beam gantry beam 2. The center of gravity is below the H-beam, ensuring good stability. The transverse moving rollers 32 consist of two sets of four rollers, ensuring smooth sliding and low sliding friction. The horizontal limiting rollers 33 also consist of two sets of four rollers. These rollers ensure that the movement trajectory of the transverse moving device 3 is parallel to the centerline of the gantry beam 2, allowing the main cable strand 6 to move smoothly. The longitudinal traction rope 23 can be made of hemp rope. Only one transverse moving device 3 is installed on the gantry beam 2. Figure 1 The diagram shows the working state of the lateral moving device 3 at four different positions: A, B, C, and D. Figure 1 The diagram depicts a gantry frame. In practice, similar to the transverse movement device in patent CN118145433A, multiple transverse movement devices 3 are arranged along the annular channel.
[0036] Furthermore, such as Figure 1 As shown, the operating platform includes a cable lifting and lateral movement operating platform 12 flush with the top surface of the anchor 1 and a cable saddle insertion operating platform 13 located at the bottom of the annular channel. The cable lifting and lateral movement operating platform 12 facilitates the standing and operation of the longitudinal traction rope 23 by the workers. The cable saddle insertion operating platform 13 is positioned lower than the main cable saddle, and several columns are provided on the side of the cable saddle insertion operating platform 13. Support systems for temporarily placing the main cable strands 6 are installed on the columns, which facilitates the workers to detach the main cable strands 6 from the cable strand limiting slots 4 and to insert the main cable strands 6 into the saddle. The edge of the cable lifting and lateral movement operating platform 12 is equipped with guardrails 121.
[0037] Furthermore, such as Figure 5As shown, the suspension bridge slewing cable main cable strand lifting and traversing device also includes a strand limiting slot 4 for holding the main cable strand 6, and the strand limiting slot 4 transports one main cable strand 6 at a time; the strand lifting chain hoist 5 lifts the strand limiting slot 4 through a hook and a hoisting rope 44; the strand limiting slot 4 includes a slot body 41 and a square slot opened on the slot body 41, the square slot is adapted to the shape and size of the main cable strand 6 after shaping into a square shape; the outer walls on both sides of the square slot are respectively provided with slot hanging holes 42 and slot hooks 43, and the two ends of the hoisting rope 44 are respectively connected to the slot hanging holes 42 and the slot hooks 43; the hoisting rope 44 can be a φ10mm steel wire rope. Preferably, one end of the lifting rope 44 passes through the slot hook 42 and is self-anchored, and the other end of the lifting rope 44 is fixed with a rope loop 45, which is sleeved on the slot hook 43. In use, the rope loop 45 is detached from the slot hook 43, and the square slot is not affected by the lifting rope 44, so the main cable strand 6 can be easily placed into the square slot. After the main cable strand 6 is placed into the square slot, the rope loop 45 is passed through the slot hook 43, and then the hook of the cable strand lifting chain hoist 5 is used to transport the cable strand limiting slot 4.
[0038] The specific construction steps are as follows:
[0039] 1. Cable pulling;
[0040] Similar to the main cable strand erection method in Chinese patent CN118145433A, the main cable strand 6 adopts the construction method of simultaneously releasing the cable strands at both ends of the folded coiled strand, pulling the strands from the north anchorage 1 to the bridge tower, and finally to the front anchorage chamber of the south anchorage 1; after being pulled into place, the strands in the turning area are located on the horizontal turning rollers, and the strands are manually adjusted in terms of their alignment, the position of the marking wires, and the restoration of the shaping binding tape, so as to meet the requirements for lifting the strands.
[0041] 2. Install cable limit slot 4;
[0042] Install cable strand limiting slots 4 at the corresponding cable strand positions directly below each gantry frame. During installation, take care to protect the cable strand wires and properly adjust the cable strand cross-section so that the cable strand can smoothly enter the square slot. During installation, ensure that the square slot opening faces upward to avoid cable strand twisting caused by lifting. Then, pass one end of the wire rope through the slot hanging hole 42 and fix it, and hang the other end on the slot hook 43. Hang the middle of the wire rope on the chain hoist hook.
[0043] 3. Improve stock selection;
[0044] like Figure 1As shown in the lateral moving device 3 at position A, the manual tightening of the cable strand lifting chain 5 causes the cable strand limiting slot 4 (main cable strand 6) to be slowly lifted. During the process, the steel wire ropes on both sides of the square slot are adjusted appropriately to make the top surface of the cable strand basically horizontal. The cable strand lifting chain 5 is pulled to lift the cable strand limiting slot 4 to 10cm above the top surface of the cable strand traction chute and the top surface of the guardrail 121 above the cable strand horizontal traction limiting platform 11.
[0045] 4. Lateral movement of the tendon;
[0046] like Figure 1 As shown in the diagram of the lateral moving device 3 at position B, after confirming that the bottom surface of the cable limit slot 4 is higher than the top surface of the guardrail 121, the cable lifting operator stops work and turns to perform the cable lateral movement operation. The longitudinal traction rope 23 is manually pulled, and using the working principle of the fixed pulley, the lateral moving device 3 is slowly moved forward (in...). Figure 1 (The movement is from left to right). When the cable strand moves laterally past the guardrail 121 and reaches the vicinity of the end of the horizontal cable saddle, the lateral movement of the cable strand is stopped. At this time, the hemp rope is tied to the horizontal traction limit platform 11 of the cable strand to prevent the sliding device from sliding back and forth due to the swaying force of the cable strand during the descent.
[0047] 5. The cable is lowered into place;
[0048] Workers who have stopped the horizontal movement of the cable should switch to the downward movement of the cable, such as... Figure 1 As shown in the lateral movement device 3 at position D, the cable strand lifting chain hoist 5 is manually released, so that the main cable strand 6 is slowly lowered onto the support system of the column of the cable strand entry saddle operation platform 13, thus completing all the procedures for lifting and moving the cable strand.
[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.
Claims
1. A suspension bridge turnbuckle main cable strand hoisting and traversing device, characterized by: The gantry column is installed on the outside of the anchorage (1) of the ring channel of the anchorage (1), the gantry beam (2) is erected on the ring channel of the anchorage (1) directly above the gantry column (21), the transverse moving device (3) is installed on the gantry beam (2), and the operation platform is built in the ring channel. The transverse moving device (3) comprises a connecting steel plate (31), a transverse moving roller (32) installed on the connecting steel plate (31) and moving along the gantry beam (2), and a connecting frame (34) fixed under the connecting steel plate (31); the connecting frame (34) is provided with a cable lifting chain (5) and a longitudinal traction rope (23); one end of the longitudinal traction rope (23) is fixed on the connecting frame (34), and the other end of the longitudinal traction rope (23) is also fixed on the connecting frame (34) after passing through two fixed pulleys (22) in sequence; and the part of the longitudinal traction rope (23) close to one side of the fixed pulley (22) is formed into a traction part by drooping.
2. The suspension bridge turnbuckle main cable strand hoisting and traversing device according to claim 1, characterized in that: The cross section of the gantry beam (2) is in the shape of an I-beam, and the two sides of the gantry beam (2) form rail grooves; the transverse moving roller (32) comprises 2-6 symmetrically arranged transverse moving rollers (32), and the transverse moving rollers (32) walk along the inner bottom surface of the rail groove.
3. The suspension bridge turnbuckle main cable strand hoisting and traversing device according to claim 2, characterized in that: The top of the connecting steel plate (31) is provided with a horizontal limiting roller (33) walking along the outer end surface of the upper groove wall of the rail groove.
4. The suspension bridge turnbuckle main cable strand hoisting and traversing device according to claim 1, characterized in that: The connecting frame (34) comprises a frame body and two longitudinal traction anchors (341) fixed on the frame body on the two sides, and the two longitudinal traction anchors (341) are respectively directed to one fixed pulley (22); and the middle part of the frame body is provided with a lifting chain fixing hole (342).
5. The suspension bridge turnbuckle main cable strand hoist and traverse apparatus as described in claim 1, wherein: The operation platform comprises a cable lifting horizontal moving operation platform (12) flush with the top surface of the anchorage (1) and a cable entering saddle operation platform (13) arranged at the lower part of the ring channel.
6. The suspension bridge turnbuckle main cable strand hoist and traverse apparatus as described in claim 1, wherein: The main cable cable lifting horizontal moving device of the suspension bridge rotary cable further comprises a cable limiting slot (4) for containing the main cable (6), and the cable lifting chain (5) lifts the cable limiting slot (4) through a hook and a lifting rope (44).
7. The suspension bridge turnbuckle main cable strand hoist and traverse apparatus according to claim 6, wherein: The cable limiting slot (4) comprises a slot body (41) and a square slot formed in the slot body (41).
8. The suspension bridge turnbuckle main cable strand hoist and traverse apparatus according to claim 7, wherein: The outer walls on the two sides of the square slot are respectively provided with a slot hanging hole (42) and a slot hook (43), and the two ends of the lifting rope (44) are respectively connected to the slot hanging hole (42) and the slot hook (43).
9. The suspension bridge turnbuckle main cable strand hoist and traverse apparatus according to claim 8, wherein: One end of the lifting rope (44) is anchored after passing through the slot hanging hole (42), the other end of the lifting rope (44) is fixed with a rope ring (45), and the rope ring (45) is sleeved on the slot hook (43).
10. The suspension bridge turnbuckle main cable strand hoist and traverse apparatus as described in claim 1, wherein: The gantry beam (2) is installed on the top of the gantry column (21) through a connecting flange (24), and the bottom of the gantry column (21) is provided with a pre-embedded part (211) pre-embedded in the anchorage (1).