A mechanized cable-stayed bridge cable replacement device

Abstract

This invention discloses a mechanized cable-stayed bridge replacement device, comprising: a cable-stayed bridge clamping mechanism and a cable-stayed bridge retrieval mechanism. One end of both the cable-stayed bridge clamping mechanism and the cable-stayed bridge retrieval mechanism is connected to a mounting platform. The mounting platform is slidably connected to a moving mechanism. The moving mechanism includes a vertical moving component and a horizontal moving component. The vertical moving component includes a limiting guide rail, an upward moving drive source, and a moving guide rail. Both the moving guide rail and the limiting guide rail are vertically laid on the bridge tower. Limiting guide rails are symmetrically laid on both sides of the moving guide rail. The horizontal moving component is slidably connected to the vertical moving component. The horizontal moving component includes a horizontal limiting guide rail, a flexible drive unit, and a horizontal moving drive source. Both ends of the horizontal limiting guide rail are slidably connected to the limiting guide rail via limiting parts. The mechanized cable-stayed bridge replacement device provided by this invention solves the technical problems of high construction risk, difficult construction control, and time-consuming and labor-intensive processes in the field of cable-stayed bridge replacement.

Description

Technical Field

[0001] This invention relates to the field of cable-stayed bridge cable replacement technology, and more specifically to a mechanized cable-stayed bridge cable replacement device. Background Technology

[0002] In recent years, my country has constructed numerous cable-stayed bridges. During operation, due to material degradation and the combined effects of the external environment, cable fatigue and corrosion are unavoidable. Damage to the cables leads to a sharp decline in their load-bearing capacity, directly threatening the operational safety of the bridge. Therefore, cable replacement during operation is one of the most effective methods to address cable defects.

[0003] Currently, traditional cable replacement on bridge sites involves complex and cumbersome manual methods, requiring workers to operate at heights and traffic to be closed. The entire cable replacement process is fraught with construction risks and is difficult to control.

[0004] Therefore, solving the problem of convenient high-altitude cable replacement for cable-stayed bridges, improving the mechanization of cable replacement, reducing construction risks, and shortening the construction period is an urgent engineering and technical problem that needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a mechanized cable-stayed bridge replacement device to solve the technical problems of high construction risk, difficulty in construction control, and time and labor costs in the field of cable-stayed bridge replacement.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a mechanized cable-stayed bridge cable-changing device, comprising:

[0007] The cable clamping mechanism and the cable retrieval mechanism are both connected to the mounting platform.

[0008] The mounting platform is slidably connected to the moving mechanism; the moving mechanism includes a vertical moving component and a horizontal moving component; the vertical moving component includes a limiting guide rail, an upward moving drive source, and a moving guide rail; both the moving guide rail and the limiting guide rail are vertically laid on the bridge tower; the limiting guide rails are symmetrically laid on both sides of the moving guide rail; the horizontal moving component is slidably connected to the vertical moving component; the horizontal moving component includes a horizontal limiting guide rail, a flexible drive unit, and a horizontal moving drive source; both ends of the horizontal limiting guide rail are slidably connected to the limiting guide rail by setting limiting parts; the limiting part includes a limiting straight section and a limiting bent section; the limiting straight section and the limiting bent section are fixedly connected; the limiting part is welded and fixed to the horizontal limiting guide rail through the limiting straight section.

[0009] Compared with the prior art, the beneficial effects of the present invention include:

[0010] 1. The mechanized cable-stayed bridge cable replacement device provided by this invention enables the simultaneous replacement of new and old cable-stayed bridge towers, and the workflow is safe, convenient and efficient.

[0011] 2. The mechanized cable-stayed bridge cable replacement device provided by this invention can be completed remotely by operators, without the need for high-altitude operations, scaffolding, or lifting vehicles, which greatly reduces the safety risks of construction.

[0012] 3. The mechanized cable-stayed bridge cable replacement device provided by this invention can be introduced during the design and construction stages of cable-stayed bridges, fundamentally solving the cable replacement problem at each stage of cable-stayed bridge operation, facilitating the later operation and maintenance of the bridge, and reducing bridge maintenance costs.

[0013] 4. The mechanized cable-stayed bridge replacement device provided by this invention does not require traffic closure during construction, thus avoiding traffic congestion and ensuring the daily traffic capacity of the bridge. At the same time, it does not require a large amount of machinery and manpower, which can save engineering resources, reduce labor costs, and improve the efficiency of cable-stayed bridge replacement, thus having a significant cost advantage. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the mechanized cable-stayed bridge cable-changing device provided by the present invention;

[0015] Figure 2 This is a side view of the mechanized cable-stayed bridge cable-changing device provided by the present invention.

[0016] Figure 3 This is a three-dimensional structural diagram of a portion of the mechanized cable-stayed bridge cable-changing device provided by the present invention;

[0017] Figure 4 This is a schematic diagram of the horizontal moving guide rail structure of the mechanized cable-stayed bridge cable-changing device provided by the present invention;

[0018] Figure 5 This is a three-dimensional structural diagram of the limiting guide rail and limiting part of the mechanized cable-stayed cable changing device provided by the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 This embodiment provides a mechanized cable-stayed bridge cable replacement device, including: a cable-stayed bridge clamping mechanism 1, a cable-stayed bridge cable retrieval mechanism 2, a mounting platform 3, and a moving mechanism 4.

[0023] Furthermore, the cable clamping mechanisms 1 located on both sides of the bridge tower 5 work simultaneously. The two cable clamping mechanisms 1 use the clamping plates 15 to clamp and fix the cable 6, forming tension, so that the cable removal mechanism 2 can remove the pin 8 on the lug 7, thereby detaching the cable 6 from the lug 7 and removing the cable 6.

[0024] Furthermore, one end of both the cable clamping mechanism 1 and the cable taking mechanism 2 is connected to the mounting platform 3.

[0025] Furthermore, the mounting platform 3 is slidably connected to the moving mechanism 4. The moving mechanism 4 includes a vertical moving component 41 and a horizontal moving component 42. The vertical moving component 41 includes a limiting guide rail 411, a rising moving drive source 412, and a moving guide rail 413. The moving guide rail 413 and the limiting guide rail 411 are both vertically laid on the bridge tower 5. The limiting guide rail 411 is symmetrically laid on both sides of the moving guide rail 413. The horizontal moving component 42 is slidably connected to the vertical moving component 41. The horizontal movement component 42 includes a horizontal limiting guide rail 421, a flexible drive unit 422, and a horizontal movement drive source 423. The two ends of the horizontal limiting guide rail 421 are slidably connected to the limiting guide rail 411 through limiting parts 424. The limiting part 424 includes a limiting straight section 4241 and a limiting bent section 4242. The limiting straight section 4241 and the limiting bent section 4242 are fixedly connected. The limiting part 424 is welded and fixed to the horizontal limiting guide rail 421 through the limiting straight section 4241.

[0026] Specifically, the vertical moving component 41 enables the mounting platform 3 to move in the vertical direction, and the horizontal moving component 42 enables the mounting platform 3 to move in the horizontal direction.

[0027] Furthermore, the output shaft of the upward movement drive source 412 is rotatably connected to a first drive rotary body 414, the first drive rotary body 414 is drivenly connected to the moving guide rail 413, and the upward movement drive source 412 is fixedly connected to the central area of ​​the horizontal limiting guide rail 421 to drive the horizontal movement component 42 to move in the vertical direction.

[0028] Preferably, the movable guide rail 413 is selected as a toothed plate, that is, one side of the movable guide rail 413 is provided with teeth, and the other side of the movable guide rail 413 is fixedly connected to the outer facade of the bridge tower 5. The first driving rotary body 414 is selected as a gear, and the gear teeth of the first driving rotary body 414 mesh with the plate teeth of the movable guide rail 413, thereby realizing the movement of the first driving rotary body 414 relative to the movable guide rail 413.

[0029] Preferably, the upward movement drive source 412 is selected as a high-power motor, and the power of the motor is sufficient to drive the cable-changing device to move in the vertical direction.

[0030] Specifically, when the vertical direction of the upward moving drive source 412 is limited, it prevents the upward moving drive source 412 from falling. When the upward moving drive source 412 is working, it drives the first driving rotary body 414 to rotate. Since the first driving rotary body 414 is driven to be connected to the moving guide rail 413, and the moving guide rail 413 is fixedly connected to the bridge tower 5, the first driving rotary body 414 and the upward moving drive source 4131 move in the vertical direction relative to the bridge tower 5.

[0031] Furthermore, the limiting guide rail 411 includes a vertical horizontal section 4111 and a longitudinal horizontal section 4112. The cross-section of the limiting guide rail 411 is L-shaped. The vertical horizontal section 4111 and the longitudinal horizontal section 4112 are fixedly connected. One end of the vertical horizontal section 4111 is arranged in a direction away from the bridge tower 5. The limiting bending section 4242 is slidably connected to the vertical horizontal section 4111.

[0032] Specifically, the limiting part 424 slides relative to the limiting guide rail 411, and the limiting guide rail 411 plays a longitudinal limiting role on the limiting part 424, that is, it plays a longitudinal limiting role on the horizontal moving component 42.

[0033] Furthermore, a limiting groove 421a is formed in the length direction of the horizontal limiting guide rail 421.

[0034] Preferably, the opening width of the limiting groove 421a is smaller than the bottom width of the limiting groove 421a.

[0035] Furthermore, the flexible drive unit 422 is slidably connected to the limiting groove 421a, and the limiting groove 421a plays a limiting role for the flexible drive unit 422 in the vertical direction.

[0036] Furthermore, the horizontal movement drive source 423 is fixedly connected to the limiting straight section 4241, and the output shaft of the horizontal movement drive source 423 is rotatably connected to the second drive rotary body 425, which is drivenly connected to the third drive rotary body 426.

[0037] Preferably, the horizontal movement drive source 423 is selected as a motor, and the second drive rotary body 425 and the third drive rotary body 426 are both selected as gears, using gears to transmit power.

[0038] Furthermore, the two ends of the third driving rotary body 426 are rotatably connected to steering rollers 427. The supporting end of the steering roller 427 is fixedly connected to the limiting bending section 4242. When the output shaft of the horizontal movement driving source 423 rotates, it drives the third driving rotary body 426 to rotate, thereby driving the steering roller 427 to rotate.

[0039] Furthermore, both ends of the horizontal limiting guide rail 421 are provided with steering rollers 427, and there are two horizontal limiting guide rails 421. One end of the flexible drive unit 422 is fixedly connected to the mounting platform 3, and the other end of the flexible drive unit 422 is connected to a rope winding mechanism 428. The rope winding mechanism 428 keeps the flexible drive unit 422 in a taut state at all times, and the flexible drive unit 422 is in close contact with the rotating rollers.

[0040] Specifically, under the action of the rope winding mechanism 428, the flexible drive unit 422 is always in contact with the steering roller 427. Under the rotation of the steering roller 427, the flexible drive unit 422 is driven to move, thereby realizing the movement of the mounting platform 3 in the horizontal direction.

[0041] Furthermore, both sides of the bridge tower 5 are provided with the cable clamping mechanism 1 and the cable taking mechanism 2. When the cable replacement work is carried out, the two cable clamping mechanisms 1 and the cable taking mechanism 2 cooperate with each other to complete the cable replacement work.

[0042] In the first embodiment, both the cable clamping mechanism 1 and the cable retrieval mechanism 2 are robotic arm structures. The cable clamping mechanism 1 includes a first robotic arm 11, a first hydraulic rod 12, a second hydraulic rod 13, a first rotating base 14, and clamping plates 15. The first robotic arm 1 is rotatably connected to the first rotating base 14 via the bearing. One end of the first hydraulic rod 12 is rotatably connected to the first rotating base 14. The first rotating base 14 is rotatably connected to the mounting platform 3. The actuating end of the first hydraulic rod 12 is connected to the center section of the first robotic arm 11. The connection is achieved by extending and retracting the first hydraulic rod 12 to realize the lifting and pitching movements of the first robotic arm 11. Secondly, the fixed end of the second hydraulic rod 13 is fixedly connected to the end of the first robotic arm 11 away from the first rotating base 14. The clamping plate 15 is fixedly connected to the actuating end of the second hydraulic rod 13. The clamping plate 15 is U-shaped in general. The two clamping plates 15 fit together to clamp the cable 6. A rubber pad is fixedly connected to the clamping plate 15. When the two clamping plates 15 clamp the cable 6, the rubber pad can increase its friction.

[0043] The cable-stayed bridge cable retrieval mechanism 2 includes a second rotating base 21, a second robotic arm 22, and a robotic claw 23. The second rotating base 21 is rotatably connected to the mounting platform 3, the second robotic arm 22 is fixedly connected to the second rotating base 21, and the actuating end of the second robotic arm 22 is fixedly connected to the robotic claw 23. Specifically, when the cable-stayed bridge cable 6 is removed from the lug 7, the robotic claw 23 is used to remove the pin 8 from the lug 7, thereby disengaging the cable-stayed bridge cable 6 from the lug 7.

[0044] In the second embodiment, the flexible drive unit 42 is a chain. When a chain is used, the rope winding mechanism 428 needs to tighten the flexible drive unit 42 so that the flexible drive unit 42 is always in a taut state, thereby making the flexible drive unit 42 closely attached to the steering roller 427. The horizontal movement drive source 423 drives the steering roller 427 to rotate, and the steering roller 427 drives the flexible drive unit 422 to move in the horizontal direction. At this time, the steering roller 427, which is fixedly connected to the limiting bending section 4242, acts as a drive wheel, and the steering rollers 427 located at both ends of the horizontal limiting guide rail 421 play a guiding role.

[0045] In the third embodiment, the flexible drive unit 422 is made of steel wire rope, which is located within the limiting groove 421a. The rope winding mechanism 428 acts as the drive source for the horizontal movement of the flexible drive unit 422. Specifically, the rope winding mechanism 428 contains a rope winding motor, the output shaft of which is fixedly connected to the flexible drive unit 422. When the output shaft of the rope winding motor rotates, it winds around the flexible drive unit 422, allowing the mounting platform 3 to move horizontally. During this process, the flexible drive unit 422 remains taut, and the steering rollers 427 located at both ends of the horizontal limiting guide rail 421 act as guides. Specifically, the rope winding mechanisms 428 located at both ends of the horizontal limiting guide rail 421 keep the flexible drive unit 422 constantly taut. The cooperation of the two rope winding mechanisms 428, and the winding and unwinding of the flexible drive unit 422, allows the mounting platform 3 to move horizontally.

[0046] Preferably, the upward movement drive source 412 is a wired motor or a track-type electric contact drive motor. When the upward movement drive source 412 is a wired motor, a wire bracket is set on one side of the bridge tower 5 to support the wire harness of the wired motor. When a track-type electric contact drive motor is used, a conductive rail should also be laid on the bridge tower 5 when the moving guide rail 413 is laid. The conductive rail contacts the upward movement drive source 412 to supply power to the upward movement drive source 412. This method does not require a wire harness, thereby avoiding the downward drag force of the weight of the wire harness on the upward movement drive source 412 and preventing instability of the overall structure.

[0047] Working Principle: The mechanized cable-stayed bridge cable changing device provided by this invention includes a cable-stayed bridge clamping mechanism 1, a cable-stayed bridge cable retrieval mechanism 2, a mounting platform 3, and a moving mechanism 4. One end of both the cable-stayed bridge clamping mechanism 1 and the cable-stayed bridge cable retrieval mechanism 2 is connected to the mounting platform 3. The mounting platform 3 is slidably connected to the moving mechanism 4. The moving mechanism 4 includes a vertical moving component 41 and a horizontal moving component 42. The vertical moving component 41 includes a limiting guide rail 411, an upward moving drive source 412, and a moving guide rail 413. The moving guide rail 413 and the limiting guide rail 411 are both vertically laid on the bridge tower 5. The limiting guide rail 411 is symmetrically laid on both sides of the moving guide rail 413. The horizontal moving component 42... The horizontal moving component 42 is slidably connected to the vertical moving component 41. It includes a horizontal limiting guide rail 421, a flexible driving unit 422, and a horizontal moving driving source 423. The two ends of the horizontal limiting guide rail 421 are slidably connected to the limiting guide rail 411 through limiting parts 424. The limiting part 424 includes a limiting straight section 4241 and a limiting bending section 4242. The limiting straight section 4241 and the limiting bending section 4242 are fixedly connected. The limiting part 424 is welded and fixed to the horizontal limiting guide rail 421 through the limiting straight section 4241. Specifically, the device is first remotely controlled by ground personnel. The prepared new cable is grasped by the mechanical claw 23 of the cable-stayed cable retrieval mechanism 2 on one side. Driven by the rising mobile power supply 412, it slowly climbs along the bridge tower 5 to the position of the old cable. The old cable is clamped to the pre-tension force by the two cable clamping mechanisms 1. Then, the second mechanical arm 22 is used to apply tension to the old cable to counteract the cable force, making it easier to remove the pin 8. After the predetermined force is reached, the cable retrieval mechanism 2 on the other side clamps the pin 8. The cable force is released by lifting and tilting the first hydraulic rod 12 and the second hydraulic rod 13, and the old cable is detached from the ear plate 7. Then, the new cable is transported to the ear plate 7, and the pin 8 that was just removed is reinserted. Finally, after the pin 8 is installed, the two clamping plates 15 clamp the old cable and slowly transport it back to the bridge deck, completing the cable replacement work.

[0048] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A mechanized cable-stayed bridge cable changing device, characterized in that, include: The cable-stayed bridge includes a cable clamping mechanism and a cable retrieval mechanism; both the cable clamping mechanism and the cable retrieval mechanism utilize robotic arm structures; one end of each of the cable clamping mechanism and the cable retrieval mechanism is connected to a mounting platform. The mounting platform is slidably connected to the moving mechanism; the moving mechanism includes a vertical moving component and a horizontal moving component; the vertical moving component includes a limiting guide rail, an upward moving drive source, and a moving guide rail; both the moving guide rail and the limiting guide rail are vertically laid on the bridge tower; the limiting guide rails are symmetrically laid on both sides of the moving guide rail; the horizontal moving component is slidably connected to the vertical moving component; the horizontal moving component includes a horizontal limiting guide rail, a flexible drive unit, and a horizontal moving drive source; both ends of the horizontal limiting guide rail are slidably connected to the limiting guide rail by limiting portions; the limiting portion includes a limiting straight section and a limiting bent section; the limiting straight section and the limiting bent section are fixedly connected; the limiting portion is fixedly connected to the horizontal limiting guide rail through the limiting straight section; The output shaft of the upward movement drive source is rotatably connected to a first drive rotary body; the first drive rotary body is driven to connect to the moving guide rail; the upward movement drive source is fixedly connected to the central area of ​​the horizontal limiting guide rail to drive the horizontal movement component to move in the vertical direction. The horizontal movement drive source is fixedly connected to the limiting straight section; the output shaft of the horizontal movement drive source is rotatably connected to a second drive rotary body; the second drive rotary body is drivenly connected to a third drive rotary body. Steering rollers are rotatably connected to both ends of the third driving rotary body; the support end of the steering roller is fixedly connected to the limiting bending section; when the output shaft of the horizontal movement driving source rotates, it drives the third driving rotary body to rotate, thereby driving the steering roller to rotate. Both ends of the horizontal limiting guide rail are provided with steering rollers; there are two horizontal limiting guide rails; one end of the flexible drive unit is fixedly connected to the mounting platform; the other end of the flexible drive unit is connected to a rope winding mechanism; the rope winding mechanism keeps the flexible drive unit in a taut state at all times; the flexible drive unit is in close contact with the steering rollers.

2. The mechanized cable-stayed bridge cable-changing device according to claim 1, characterized in that, The limiting guide rail includes a vertical horizontal section and a longitudinal horizontal section; the cross-section of the limiting guide rail is L-shaped; the vertical horizontal section and the longitudinal horizontal section are fixedly connected; one section of the vertical horizontal section is arranged away from the bridge tower; the limiting bending section is slidably connected to the vertical horizontal section.

3. The mechanized cable-stayed bridge cable-changing device according to claim 2, characterized in that, The horizontal limiting guide rail has a limiting groove along its length; the opening width of the limiting groove is smaller than the bottom width of the limiting groove; the flexible drive unit is slidably connected to the limiting groove; the limiting groove limits the flexible drive unit in the vertical direction.

4. The mechanized cable-stayed bridge cable-changing device according to claim 3, characterized in that, Both sides of the bridge tower are equipped with the cable clamping mechanism and the cable retrieval mechanism; when the cable is replaced, the two cable clamping mechanisms and the cable retrieval mechanism cooperate with each other to complete the cable replacement work.

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