Cable crane bearing cable transverse movement traction system and construction method thereof

Abstract

The invention belongs to the technical field of bridge construction and maintenance, and particularly relates to a cable crane bearing cable transverse movement traction system and a construction method thereof. A cable crane load-bearing cable transverse movement traction system comprises a load-bearing cable guide, a transverse traction cable, an intelligent cable tensioning controller and a jack anchoring mechanism, the load-bearing cable guide is arranged on the load-bearing cable at the junction of a cable crane hoisting blind area and a hoisting area, the transverse traction cable comprises a plurality of steel strands, one end of each steel strand is connected with the load-bearing cable guide in an anchoring mode, and the other end of each steel strand is connected with the intelligent cable tensioning controller in an anchoring mode. The other end of the bearing cable is tensioned or loosened through an intelligent cable tensioning controller, the intelligent cable tensioning controller is fixedly connected to a jack anchoring mechanism, and the jack anchoring mechanism is arranged on a side slope platform parallel to the offset point of the bearing cable. According to the invention, the intelligent cable tensioning controller is adopted to tension or loosen the transverse traction cable, so that the transverse deviation of the bearing cable is realized, the working area of the cable crane is enlarged, the number of the cable cranes is effectively reduced, and the construction cost is greatly saved.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction and maintenance technology, and specifically relates to a cable-stayed crane lateral traction system and its construction method. Background Technology

[0002] Cable cranes are lifting machinery that run along overhead load-bearing cables and have the functions of horizontal and vertical transportation. Due to their strong spanning capacity, large lifting capacity, and minimal impact on navigation, they are widely used in the transportation and hoisting construction of long-span arch bridge segments.

[0003] In traditional cable-stayed gantry systems, the main cable position remains fixed, limiting the lateral lifting range of a single gantry crane. When the bridge is wide, multiple gantry cranes are needed along the bridge's width to meet lifting requirements. However, in the construction of long-span arch bridges, setting up multiple gantry crane systems requires a large amount of materials such as wire ropes, resulting in high construction costs. Simultaneously, the costs of operation, supervision, and maintenance are also significant, and construction safety risks are substantially increased. To address this issue, cable-stayed gantry systems with cable towers can install lateral sliding saddles at the top of the towers to achieve lateral movement. For cable-stayed gantry systems without cable towers, sliding rails and a power system are required at the anchor points of the load-bearing cables to achieve lateral movement. However, this approach results in large main cable anchorage structures, leading to high construction costs. Furthermore, the sliding devices and rails require high load-bearing capacity, posing significant safety risks during actual construction. Therefore, a new, efficient, and safe lateral movement device and construction control method for cable-stayed gantry cranes are urgently needed to solve these problems. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this invention is to provide a cable-stayed crane lateral displacement traction system and its construction method. This system is installed on an existing cable-stayed crane device and uses an intelligent cable tension controller to tension or relax the lateral traction cable, thereby achieving lateral displacement of the load-bearing cable. This invention's cable-stayed crane lateral displacement traction system is convenient, efficient, safe, and reliable. It fully utilizes the flexible material characteristics of the load-bearing cable wire rope, effectively solving the problems of high safety risks and operational difficulties associated with lateral displacement of the load-bearing cable in cableless tower-type rock-anchored cable-stayed crane systems.

[0005] The technical solution of this invention is as follows: a cable crane lateral traction system for load-bearing cables, comprising a load-bearing cable guide, a lateral traction cable, an intelligent cable tension controller, and a jack anchoring mechanism. The load-bearing cable guide is installed on the load-bearing cable at the junction of the cable crane's lifting blind zone and lifting zone. The lateral traction cable comprises multiple steel strands, one end of which is anchored to the load-bearing cable guide, and the other end is tensioned or released via the intelligent cable tension controller. The intelligent cable tension controller comprises a continuous jack, a hydraulic pump station, and a Beidou control system. The intelligent cable tension controller is fixedly connected to the jack anchoring mechanism, which is installed on a slope platform parallel to the offset point of the load-bearing cable. It is used to provide the supporting reaction force required for the continuous jack to operate. In use, the hydraulic pump station adjusts the pumping flow rate in real time according to the monitoring data analysis results, thereby controlling the operation of the continuous jack and driving the lateral traction cable and the load-bearing cable guide to laterally traction the load-bearing cable.

[0006] The load-bearing cable guide includes a guide frame and cable clamp limiters. The guide frame is perpendicular to the load-bearing cable direction in its length direction. One guide frame is symmetrically arranged at each end of the cable hoisting blind zone and the hoisting zone on both banks. A row of evenly spaced guide pulleys is arranged in the middle of the guide frame. The load-bearing cable passes between the guide pulleys. Cable clamp limiters are provided on both sides of the load-bearing cable before and after passing through the guide pulleys. The cable clamp limiters are fastened to the load-bearing cable with rope clamps and nuts, which can limit the longitudinal movement of the load-bearing cable guide on the load-bearing cable. A pulley pin is provided at the center of the guide pulley. The guide pulley is rotatably connected to the guide frame through the pulley pin. Anchoring lugs are provided at both ends of the guide frame. Anchor boxes for anchoring the traction cable strands are fixed to the anchoring lugs. The anchor boxes have reserved channels for anchoring the transverse traction cable. An anchoring pin is provided in the middle of the anchor box. The anchor box is rotatably connected to the anchoring lugs through the anchoring pin.

[0007] The jack anchoring mechanism is fixed to the slope platform in the form of a rock anchor, including a concrete anchor, a steel anchor beam, prestressed anchor cables, and a jack reaction frame. The concrete anchor is set on the rock foundation of the slope on both sides. Embedded parts are set on the top surface of the concrete anchor. Longitudinal bars and stirrups are set inside the concrete anchor. Steel mesh and tie bars are placed below the embedded parts. The steel anchor beam is welded to the embedded parts and fixed to the top surface of the concrete anchor, and is anchored by prestressed anchor cables. Connecting ear plates are set on the side of the steel anchor beam to connect the jack reaction frame. The prestressed anchor cables are made of high-strength, low-relaxation steel strands. The prestressed anchor cables pass through the concrete anchor, embedded parts, and steel anchor beam and are anchored to the top surface of the steel anchor beam. The jack reaction frame is connected to the steel anchor beam by ear plates and pins. Continuous jacks are set inside the frame.

[0008] The continuous jack includes a main jack, an upper clamping jack, and a lower clamping jack. The continuous jack is located at the tensioning end within the reaction frame, and the transverse traction cable passes through the continuous jack.

[0009] The Beidou control system includes a displacement monitoring station, a field monitoring room, a control box, a pump starter box, and a jack sensor.

[0010] A construction method for a cable-stayed crane lateral traction system, using the cable-stayed crane lateral traction system as described above, includes the following steps: S1. Preparations before construction; S2. Construction of jack anchoring mechanism and installation of continuous jack; S3. The load-bearing cable guide is installed at the traction point of the load-bearing cable of the cable crane; S4. Anchor one end of the transverse traction cable strand to the load-bearing cable guide and the other end to the tensioning end of the continuous jack. S5. When the load-bearing cable needs to be shifted laterally to one side, the continuous jack cylinder on that side tensions the lateral traction cable, while the jack cylinder on the other side relaxes the lateral traction cable, causing the load-bearing cable to shift laterally to the target position. S6. During the lateral displacement and normal operation of the cable crane's load-bearing cable, the intelligent cable tensioning controller adjusts the output flow of the hydraulic pump station in real time based on Beidou monitoring data and jack sensor data, thereby controlling the continuous jack action and ensuring that the load-bearing cable stays safely and reliably at the target position.

[0011] Step S1 includes the following steps: S11. Pedestrian walkways shall be set up on both sides of the slope, obstacles shall be removed from the construction area, and the construction access road shall be extended to the construction area of ​​the jack anchoring mechanism. S12. Before construction, the slope should be cleared of hazards and active protective netting should be installed to prevent rocks from rolling down the mountain and ensure construction safety. S13. The steel strands of the transverse traction cable, continuous jacks, load-bearing cable guides, and steel anchor beams shall be delivered to the site and inspected.

[0012] Step S2 includes the following steps: S21. Slope excavation at anchorage location: Strict control of slope inclination, flatness, and base elevation during excavation. S22. Drill holes, install prestressed anchor cables, and inject anchoring mortar into grouting holes; S23. Tie the anchor reinforcement, install the embedded parts, and pour the anchor concrete after setting up the formwork; S24. Install steel anchor beams, tension and anchor prestressed anchor cables, and seal anchor heads after secondary grouting; S25. Install the jack reaction frame on the steel anchor beam and install and fix the continuous jack.

[0013] Step S4 includes the following steps: S41. Pull one end of the transverse traction cable strand to the anchor box at the end of the load-bearing cable guide as the fixed end, and use a P-type extrusion anchor to manually anchor and fix it. S42. Pass the other end of the transverse traction cable strand through the continuous jack as the tensioning end, and use the clamping jack to clamp the strand.

[0014] Step S5 includes the following steps: S51. Simultaneously start the continuous jacks on both the upstream and downstream sides. The piston of the continuous jack on the tensioning side moves in extension and retraction cylinder motion. When the cylinder extends, the upper clamping top set at the top of the piston clamps the transverse traction cable steel strand, causing the load-bearing cable to move towards the tensioning side. When the cylinder retracts, the lower clamping top at the bottom clamps the steel strand, ensuring that the steel strand stays safely and reliably in the new position. At the same time, the upper clamping top releases the steel strand, and the piston returns to prepare for the next stroke. The piston of the continuous jack on the relaxation side moves in extension and retraction cylinder motion simultaneously, continuously releasing the transverse traction cable steel strand through the upper and lower clamping tops. S52. After the cable crane's load-bearing cable reaches the target position, the continuous jacks on both banks stop tensioning or loosen the transverse traction cable strands.

[0015] Step S6 includes the following steps: S61. Install displacement monitoring station equipment on the load-bearing cable guide, and send the monitoring data to the server workstation in the field control room via a wireless bridge. S62. The server workstation performs calculations and analysis on the monitoring data, and at the same time processes and transmits the displacement data to the programmable controller in the control box as the system monitoring interface. S63: The control box receives displacement monitoring data and data backup, and outputs control signals to the solenoid valve to control the continuous jack's operation. S64. The pump starter box is installed in the hydraulic pump station, equipped with a frequency converter to control the start and stop of the pump, and adjusts the pump output flow in real time with the control signal. S65. Pressure and displacement sensors are installed inside the continuous jack to monitor the piston position and load of the jack in real time. S66: The control box collects data from the continuous jack sensor in real time to form a closed-loop control.

[0016] The technical advantages of this invention are as follows: 1. This invention, installed on an existing cable crane device, uses an intelligent cable tensioning controller to tension or relax the lateral traction cable, thereby achieving lateral offset of the load-bearing cable. This expands the working area covered by a single cable crane, making hoisting operations more flexible and suitable for various hoisting scenarios. Compared to traditional cable cranes, it can effectively reduce the number of cable cranes, and for large-span cable crane systems, it can greatly save on temporary structure construction costs. 2. The load-bearing cable guide of this invention integrates the dispersed load-bearing cables into one unit, achieving synchronous lateral movement. This prevents the load-bearing cable below the crane from derailing due to lateral movement. At the same time, the guide wheel set inside the guide effectively reduces the large concentrated stress generated by the horizontal angle of the rope after the load-bearing cable has laterally moved. 3. The intelligent cable controller used in this invention can automatically and intelligently adjust the lateral traction cable force according to the offset requirements, reducing the input of manpower and materials and avoiding the risk of human error during tensioning. 4. This invention uses continuous jacks as the tensioning device for the lateral traction cable, enabling continuous tensioning operation. It boasts advantages of high efficiency and safety. The upper and lower clamping jacks can secure the lateral steel strands, ensuring the load-bearing cable remains safely and reliably at the target position. 5. The lateral traction system of this invention can also serve as a lateral wind-resistant cable system for the load-bearing cable. It fully utilizes the flexible material characteristics of the load-bearing cable wire rope, ensuring good wind resistance stability of the load-bearing cable during non-lateral movement operations. This effectively solves the problems of high safety risks and operational difficulties associated with lateral movement of the load-bearing cable in cableless tower-type rock anchor cable-stayed crane systems.

[0017] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic elevation view of the overall elevation of a cable-stayed load-bearing cable lateral traction system according to the present invention.

[0019] Figure 2 This is a schematic plan view of the overall plan of a cable-stayed load-bearing cable lateral traction system according to the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of a cable-stayed load-bearing cable lateral traction system according to the present invention.

[0021] Figure 4 This is a structural elevation diagram of a cable-stayed load-bearing cable lateral traction system according to the present invention.

[0022] Figure 5 This is a structural elevation diagram of the jack anchoring mechanism of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the jack anchoring mechanism of the present invention.

[0024] Figure 7 This is a schematic diagram illustrating the working principle of a cable-stayed crane lateral traction system for load-bearing cables according to the present invention.

[0025] Reference numerals in the attached diagram: 1-Load-bearing cable guide, 2-Transverse traction cable, 3-Intelligent cable tensioning controller, 4-Jack anchoring mechanism, 5-Guide frame, 6-Guide cable pulley, 7-Pulley pin, 8-Anchoring ear plate, 9-Anchor box, 10-Anchoring pin, 11-Cable clamp limiter, 12-Continuous jack, 13-Hydraulic pump station, 17-Jack reaction frame, 18-Main jack, 19-Upper clamping jack, 20-Lower clamping jack, 21-Concrete anchor, 22-Steel anchor beam, 23-Prestressed anchor cable, 24-Embedded part, 25-Connecting ear plate, 26-Displacement monitoring station, 27-Field control room, 28-Control box, 29-Pump starter box. Detailed Implementation Example 1

[0026] like Figures 1-7 As shown, a cable crane lateral traction system includes a cable guide 1, a lateral traction cable 2, an intelligent cable tension controller 3, and a jack anchoring mechanism 4. The cable guide 1 is installed on the cable at the boundary between the cable crane's lifting blind zone and lifting zone. The lateral traction cable 2 includes multiple steel strands. One end of each steel strand is anchored to the cable guide 1, and the other end is tensioned or released by the intelligent cable tension controller 3. The intelligent cable tension controller 3 includes a continuous jack 1. 2. Hydraulic pump station 13 and Beidou control system: The intelligent cable tensioning controller 3 is fixedly connected to the jack anchoring mechanism 4. The jack anchoring mechanism 4 is set on the slope platform parallel to the offset point of the load-bearing cable and is used to provide the supporting reaction force required for the continuous jack 12 to run. In use, the hydraulic pump station 13 adjusts the pumping flow rate in real time according to the monitoring data analysis results, thereby controlling the continuous jack 12 to work and drive the transverse traction cable 2 and the load-bearing cable guide 1 to perform transverse traction on the load-bearing cable.

[0027] In this invention, the load-bearing cable guide 1 serves as a lateral traction device mounted on the load-bearing cable. It applies a lateral horizontal force to the load-bearing cable by tensioning the lateral traction cable 2. The intelligent cable tension controller 3 provides tension, and the jack anchoring mechanism 4 provides supporting reaction force for the jack tensioning. These four components work together to form a complete traction system. During operation, the hydraulic pump station 13 adjusts the pumping flow rate in real time based on monitoring data analysis, thereby controlling the continuous jack 12 to drive the lateral traction cable 2 and the load-bearing cable guide 1 to perform lateral traction on the load-bearing cable, thus achieving lateral displacement of the load-bearing cable. This invention, when installed on existing cable crane devices, uses an intelligent cable tension controller to tension or relax the lateral traction cable, thereby achieving lateral displacement of the load-bearing cable. This expands the working area covered by a single cable crane, making hoisting operations more flexible and suitable for various hoisting scenarios. Compared to traditional cable cranes, it effectively reduces the number of cable cranes required. For large-span cable crane systems, it can significantly reduce the construction cost of temporary structures. Example 2

[0028] Based on Embodiment 1, in this embodiment, preferably, the load-bearing cable guide 1 includes a guide frame 5 and a cable clamp limiter 11. The length direction of the guide frame 5 is perpendicular to the direction of the load-bearing cable. One guide frame 5 is symmetrically arranged at each end of the cable hoisting blind zone and the hoisting zone on both banks. A row of evenly spaced guide pulleys 6 is arranged in the middle of the guide frame 5. The load-bearing cable passes between the guide pulleys 6. Cable clamp limiters 11 are respectively provided on the front and rear sides of the load-bearing cable passing through the guide pulleys 6. The cable clamp limiters 11 are rope clamps. By fastening the nut to the load-bearing cable, the longitudinal movement of the load-bearing cable guide 1 on the load-bearing cable can be restricted. The guide pulley 6 has a pulley pin 7 at its center. The guide pulley 6 is rotatably connected to the guide frame 5 through the pulley pin 7. Anchoring ear plates 8 are provided at both ends of the guide frame 5. Anchor boxes 9 of the traction cable strands are fixed to the anchoring ear plates 8. The anchor boxes 9 have reserved channels for anchoring the transverse traction cable 2. An anchoring pin 10 is provided in the middle of the anchor box 9. The anchor box 9 is rotatably connected to the anchoring ear plates 8 through the anchoring pin 10.

[0029] In use, the load-bearing cable guide 1 of this invention can integrate the dispersed load-bearing cables into one, ensuring that the spacing between each load-bearing cable is consistent with the spacing between the overhead crane load-bearing cable pulleys. During lateral traction, this achieves uniform force distribution and synchronous lateral movement of the load-bearing cables, preventing derailment of the load-bearing cables below the overhead crane due to lateral movement. Simultaneously, the guide pulleys 6 installed within the load-bearing cable guide 1 effectively reduce the large concentrated stress generated by the horizontal angle of the rope after lateral movement. Anchoring ear plates 8, anchor boxes 9, and anchoring pins 10 are installed on both sides of the guide frame 5, providing a reliable traction anchoring device for the lateral traction cable 2. Example 3

[0030] Based on Embodiment 1 or Embodiment 2, in this embodiment, preferably, the jack anchoring mechanism 4 is fixed to the slope platform in the form of a rock anchor, including a concrete anchor 21, a steel anchor beam 22, a prestressed anchor cable 23, and a jack reaction frame 17. The concrete anchor 21 is set on the rock foundation of the slope on both sides, and a pre-embedded part 24 is set on the top surface of the concrete anchor 21. Longitudinal bars and stirrups are set inside the concrete anchor 21. A steel mesh and tie bars are placed below the pre-embedded part 24. The steel anchor beam 22 and the pre-stressed anchor cable 23 are fixed to the slope platform. The embedded part 24 is welded and fixed to the top surface of the concrete anchor 21 and anchored by the prestressed anchor cable 23. The steel anchor beam 22 is provided with connecting ear plate 25 on the side to connect the jack reaction frame 17. The prestressed anchor cable 23 is made of high-strength low-relaxation steel strand. The prestressed anchor cable 23 passes through the concrete anchor 21, the embedded part 24 and the steel anchor beam 22 and is anchored to the top surface of the steel anchor beam 22. The jack reaction frame 17 is connected to the steel anchor beam 22 by ear plate and pin shaft. Continuous jacks 12 are set in the frame.

[0031] In use, the jack anchoring mechanism 4 adopts a structure of "concrete anchor 21 + steel anchor beam 22 + prestressed anchor cable 23", making full use of the terrain and geological conditions. The prestressed anchor cable 23 provides reliable support and reaction force for the jack. The jack reaction frame 17 is connected to the steel anchor beam 22 by ear plates and pins, allowing it to rotate within a certain angle range in the traction cable plane to accommodate the horizontal angle of the transverse traction cable strands. Example 4

[0032] Based on Embodiment 1 or Embodiment 3, in this embodiment, preferably, the continuous jack includes a main jack 18, an upper clamping jack 19 and a lower clamping jack 20, the continuous jack 12 is located at the tensioning end within the reaction frame 17, and the transverse traction cable 2 passes through the continuous jack 12.

[0033] In use, the continuous jack 12 continuously tensions or releases the transverse traction cable 2 steel strand via a piston, upper clamping top 19, and lower clamping top 20, providing power for the lateral movement of the load-bearing cable. The upper clamping top 19 and lower clamping top 20 ensure that the steel strand remains safely and stably at the target position after tensioning or releasing. Simultaneously, the hydraulic circuit of the continuous jack is equipped with a hydraulically controlled check valve and a balance valve, which can lock the oil circuit in the event of a sudden power outage or other emergency, keeping the load-bearing cable in a safe, stationary state. Example 5

[0034] Based on Embodiment 1 or Embodiment 4, in this embodiment, preferably, the Beidou control system includes a displacement monitoring station 26, a field monitoring room 27, a control box 28, a pump starter box 29, and a jack sensor.

[0035] In use, a displacement monitoring station 26 is installed on the load-bearing cable guide. Monitoring data is transmitted via a wireless bridge to a server workstation in the field control room 27. The server workstation analyzes the monitoring data and processes and transmits the displacement data to the programmable controller in the control box 28, serving as the system monitoring interface. The control box 28 receives displacement monitoring data and data backups, outputs control signals to the solenoid valves to control the operation of the continuous jack 12. A pump starter box 29, installed in the hydraulic pump station 13 and equipped with a frequency converter, controls the pump's start and stop, and adjusts the pump's output flow in real time in conjunction with the control signals. Pressure and displacement sensors are installed inside the continuous jack 12 to monitor the jack piston position and load in real time. The control box 28 collects sensor data from the continuous jack 12 in real time, forming a closed-loop control. The intelligent cable controller used in this invention can automatically and intelligently adjust the lateral traction cable force according to offset requirements, reducing manpower and material input and avoiding the risk of human error during tensioning. Example 6

[0036] A construction method for a cable-stayed crane lateral traction system, using the cable-stayed crane lateral traction system as described above, includes the following steps: S1. Preparations before construction; S2, Construction of jack anchoring mechanism 4 and installation of continuous jack 12; S3. The load-bearing cable guide 1 is installed at the traction point of the load-bearing cable of the cable crane; S4. Anchor one end of the transverse traction cable 2 steel strand to the load-bearing cable guide 1, and the other end to the tensioning end of the continuous jack 12. S5. When the load-bearing cable needs to be shifted laterally to one side, the continuous jack 12 on that side extends to tension the lateral traction cable 2, while the jack on the other side retracts to relax the lateral traction cable 2, so that the load-bearing cable shifts laterally to the target position. S6. During the lateral displacement and normal operation of the cable crane's load-bearing cable, the intelligent cable tensioning controller 3 adjusts the output flow of the hydraulic pump station 13 in real time based on Beidou monitoring data and jack sensor data, thereby controlling the action of the continuous jack 12 to ensure that the load-bearing cable stays safely and reliably at the target position.

[0037] Step S1 includes the following steps: S11. Set up pedestrian walkways on both sides of the slope, remove obstacles in the construction area, and extend the construction access road to the jack anchorage mechanism 4 construction area. S12. Before construction, the slope should be cleared of hazards and active protective netting should be installed to prevent rocks from rolling down the mountain and ensure construction safety. S13, the steel strands of the transverse traction cable 2, the continuous jack 12, the load-bearing cable guide 1, and the steel anchor beam 22 were delivered and inspected.

[0038] Step S2 includes the following steps: S21. Slope excavation at anchorage location: Strict control of slope inclination, flatness, and base elevation during excavation. S22. Drill holes and install prestressed anchor cables; 23. Inject anchoring mortar into grouting holes. S23. Tie the anchor reinforcement bars and install the embedded parts; 24. Pour the anchor concrete after setting up the formwork. S24. Install steel anchor beam 22, prestressed anchor cable 23, tension and anchor, and seal the anchor head after secondary grouting; S25. Install the jack reaction frame on the steel anchor beam 22. 17. Install and fix the continuous jack 12.

[0039] Step S4 includes the following steps: S41. Pull one end of the transverse traction cable 2 steel strand to the anchor box 9 at the end of the load-bearing cable guide 1 as the fixed end, and use a P-type extrusion anchor to manually anchor and fix it. S42. Pass the other end of the transverse traction cable 2 steel strand through the continuous jack 12 as the tensioning end, and use the clamping jack to clamp the steel strand.

[0040] Step S5 includes the following steps: S51. Simultaneously start the continuous jacks 12 on both sides of the river. The piston of the continuous jack 12 on the tensioning side moves in extension and retraction cylinder motion. When the cylinder extends, the upper clamping top 19 set at the top of the piston clamps the steel strand of the transverse traction cable 2, causing the load-bearing cable to move towards the tensioning side. When the cylinder retracts, the lower clamping top 20 at the bottom clamps the steel strand, so that the steel strand is safely and reliably stopped in the new position. At the same time, the upper clamping top 19 releases the steel strand, and the piston returns to prepare for the next stroke. The piston of the continuous jack 12 on the relaxation side moves in extension and retraction cylinder motion simultaneously, and the transverse traction cable 2 steel strand is continuously released through the upper and lower clamping tops. S52. After the cable crane's load-bearing cable reaches the target position, the continuous jacks 12 on both banks stop tensioning or loosen the transverse traction cable strand 2.

[0041] Step S6 includes the following steps: S61. Install displacement monitoring station 26 on the load-bearing cable guide, and send the monitoring data to the server workstation in the field control room 27 via a wireless bridge. S62, the server workstation performs calculation and analysis on the monitoring data, and at the same time processes and transmits the displacement data to the programmable controller in the control box 28 as the system monitoring interface; S63 and control box 28 receive displacement monitoring data and data backup, and output control signals to the solenoid valve to control the operation of continuous jack 12. S64. The pump starter box 29 is installed inside the hydraulic pump station 13, equipped with a frequency converter to control the start and stop of the pump, and adjusts the pump output flow in real time with the control signal. S65. Pressure and displacement sensors are installed inside the continuous jack 12 to monitor the piston position and load of the jack in real time. S66 and control box 28 collect data from the 12 sensors of the continuous jack in real time to form a closed-loop control.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A cable-stayed crane lateral traction system, characterized in that: The system includes a load-bearing cable guide (1), a transverse traction cable (2), an intelligent cable tensioning controller (3), and a jack anchoring mechanism (4). The load-bearing cable guide (1) is installed on the load-bearing cable at the junction of the cable crane's blind zone and lifting zone. The transverse traction cable (2) includes multiple steel strands. One end of each steel strand is anchored to the load-bearing cable guide (1), and the other end is tensioned or released by the intelligent cable tensioning controller (3). The intelligent cable tensioning controller (3) includes a continuous jack (12) and a hydraulic pump station (14). 3) and the Beidou control system, the intelligent cable tensioning controller (3) is fixedly connected to the jack anchoring mechanism (4). The jack anchoring mechanism (4) is set on the slope platform parallel to the offset point of the load-bearing cable, and is used to provide the support reaction force required for the continuous jack (12) to run. When in use, the hydraulic pump station (13) adjusts the pumping flow rate in real time according to the monitoring data analysis results, thereby controlling the continuous jack (12) to work and drive the transverse traction cable (2) and the load-bearing cable guide (1) to perform transverse traction on the load-bearing cable.

2. The cable-stayed crane lateral traction system according to claim 1, characterized in that: The load-bearing cable guide (1) includes a guide frame (5) and a cable clamp limiter (11). The guide frame (5) is perpendicular to the direction of the load-bearing cable in its length direction. One guide frame (5) is symmetrically arranged at the junction of the cable hoisting blind zone and the hoisting zone on both banks. A row of evenly spaced guide pulleys (6) is arranged in the middle of the guide frame (5). The load-bearing cable passes between the guide pulleys (6). Cable clamp limiters (11) are provided on both the front and rear sides of the load-bearing cable passing through the guide pulleys (6). The cable clamp limiters (11) are fastened to the load-bearing cable by rope clamps and nuts, which can limit the load. The heavy cable guide (1) moves longitudinally on the load-bearing cable. The guide pulley (6) has a pulley pin (7) at its center. The guide pulley (6) is rotatably connected to the guide frame (5) through the pulley pin (7). The guide frame (5) has anchoring ear plates (8) at both ends. The anchoring ear plates (8) are fixed with anchor boxes (9) for the traction cable strands. The anchor boxes (9) have reserved holes for anchoring the transverse traction cable (2). The anchor boxes (9) have an anchoring pin (10) in the middle. The anchor boxes (9) are rotatably connected to the anchoring ear plates (8) through the anchoring pin (10).

3. The cable-stayed crane lateral traction system according to claim 1, characterized in that: The jack anchoring mechanism (4) is fixed to the slope platform in the form of a rock anchor, including a concrete anchor (21), a steel anchor beam (22), a prestressed anchor cable (23), and a jack reaction frame (17). The concrete anchor (21) is set on the rock foundation of the slope on both sides. An embedded part (24) is set on the top surface of the concrete anchor (21). Longitudinal bars and stirrups are set inside the concrete anchor (21). A steel mesh and tie bars are set below the embedded part (24). The steel anchor beam (22) is welded and fixed to the embedded part (24) in the concrete anchor. (21) The top surface is anchored by prestressed anchor cable (23). The steel anchor beam (22) is provided with connecting ear plate (25) on the side to connect the jack reaction frame (17). The prestressed anchor cable (23) is made of high-strength low-relaxation steel strand. The prestressed anchor cable (23) passes through the concrete anchor (21), the embedded part (24) and the steel anchor beam (22) and is anchored to the top surface of the steel anchor beam (22). The jack reaction frame (17) is connected to the steel anchor beam (22) by ear plate and pin shaft. Continuous jacks (12) are set in the frame.

4. The cable-stayed crane lateral traction system according to claim 4, characterized in that: The continuous jack includes a main jack (18), an upper clamping jack (19) and a lower clamping jack (20). The continuous jack (12) is located at the tensioning end within the reaction frame (17), and the transverse traction cable (2) passes through the continuous jack (12).

5. The cable-stayed crane lateral traction system according to claim 1, characterized in that: The Beidou control system includes a displacement monitoring station (26), a field monitoring room (27), a control box (28), a pump starter box (29), and a jack sensor.

6. A construction method for a cable-stayed crane lateral traction system, using the cable-stayed crane lateral traction system as described in claim 1, characterized in that: Includes the following steps: S1. Preparations before construction; S2, Construction of jack anchoring mechanism (4) and installation of continuous jack (12); S3, The load-bearing cable guide (1) is installed at the traction point of the load-bearing cable of the cable crane; S4. Anchor one end of the transverse traction cable (2) steel strand to the load-bearing cable guide (1) and the other end to the tensioning end of the continuous jack (12); S5. When the load-bearing cable needs to be shifted laterally to one side, the continuous jack (12) on that side extends to tension the lateral traction cable (2), and the jack on the other side retracts to relax the lateral traction cable (2), so that the load-bearing cable shifts laterally to the target position. S6. During the lateral displacement and normal operation of the cable crane's load-bearing cable, the intelligent cable tensioning controller (3) adjusts the output flow of the hydraulic pump station (13) in real time according to the Beidou monitoring data and the jack sensor data, thereby controlling the action of the continuous jack (12) so that the load-bearing cable can stay safely and reliably at the target position.

7. The construction method of a cable-stayed crane lateral traction system according to claim 6, characterized in that: Step S1 includes the following steps: S11. Set up pedestrian walkways on both sides of the slope, remove obstacles in the construction area, and build the construction access road to the jack anchorage mechanism (4) construction area. S12. Before construction, the slope should be cleared of hazards and active protective netting should be installed to prevent rocks from rolling down the mountain and ensure construction safety. S13, the steel strands of the transverse traction cable (2), the continuous jack (12), the load-bearing cable guide (1), and the steel anchor beam (22) are delivered and inspected.

8. The construction method of a cable-stayed crane lateral traction system according to claim 6, characterized in that: Step S2 includes the following steps: S21. Slope excavation at anchorage location: Strict control of slope inclination, flatness, and base elevation during excavation. S22, Drilling holes and installing prestressed anchor cables (23), injecting anchoring mortar into grouting holes; S23, tie anchor reinforcement bars, install embedded parts (24), and pour anchor concrete after formwork; S24. Install steel anchor beam (22), tension and anchor prestressed anchor cable (23), and seal the anchor head after secondary grouting; S25. Install the jack reaction frame (17) on the steel anchor beam (22) and install the fixed continuous jack (12).

9. The construction method of a cable-stayed crane lateral traction system according to claim 6, characterized in that: Step S4 includes the following steps: S41. Pull one end of the transverse traction cable (2) steel strand to the anchor box (9) at the end of the load-bearing cable guide (1) as the fixed end, and use a P-type extrusion anchor to manually anchor and fix it. S42. Pass the other end of the transverse traction cable (2) steel strand through the continuous jack (12) as the tensioning end, and use the clamping jack to clamp the steel strand.

10. The construction method of a cable-stayed crane lateral traction system according to claim 6, characterized in that: Step S5 includes the following steps: S51. Simultaneously start the continuous jacks (12) on both sides of the river. The piston of the continuous jack (12) on the tensioning side moves the cylinder extension and retraction. When the cylinder extends, the upper clamping top (19) set at the top of the piston clamps the transverse traction cable (2) steel strand, so that the load-bearing cable moves towards the tensioning side. When the cylinder retracts, the lower clamping top (20) at the bottom clamps the steel strand, so that the steel strand stays safely and reliably in the new position. At the same time, the upper clamping top (19) releases the steel strand, and the piston returns to prepare for the next stroke. The piston of the continuous jack (12) on the relaxation side moves the cylinder extension and retraction simultaneously. The transverse traction cable (2) steel strand is continuously released through the upper and lower clamping tops. S52. After the cable crane reaches the target position, the continuous jacks (12) on both sides stop tensioning or loosen the transverse traction cable strands (2).

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