Bridge stay cable installation structure and construction process

Abstract

This application relates to the installation structure and construction technology of bridge stay cables, and falls within the technical field of bridge stay cables. It includes two anchorages, a cable threading machine, jacks, and fixed circular pipes. The two anchorages are respectively movably mounted on two fixed circular pipes for positioning. A drive mechanism is provided on the fixed circular pipes to drive the two anchorages to move simultaneously. This application uses the drive mechanism to activate the two anchorages, causing the installed steel strands to move to one side. Simultaneously, it aligns another anchor hole on the anchorage with the steel strand connected to the cable threading machine, thereby reducing the probability of tangling during the movement of the steel strands and improving the installation efficiency of the stay cables.

Description

Technical Field

[0001] This application relates to the technical field of bridge stay cables, and in particular to the installation structure and construction technology of bridge stay cables. Background Technology

[0002] A cable-stayed bridge, also known as a skeletal-stayed bridge, is a type of bridge where the main girder is directly supported by numerous cables to the bridge towers. It is a structural system composed of compression-bearing towers, tension-bearing cables, and bending-resistant girder sections. It can be viewed as a multi-span, elastically supported continuous beam where cables replace piers. This reduces bending moments within the girder, lowers the building height, reduces structural weight, and saves materials. A cable-stayed bridge mainly consists of towers, a main girder, and stay cables.

[0003] The existing cable-stayed cable installation process includes: Accessory installation: installing cableway pipes, protective pipes, and anchorages, with the anchorages fixed at both ends of the steel strand installation location; Steel strand installation: using a cable-threading machine to pull a single steel strand, allowing it to pass through two anchorages and be fixed by clamps, then repeating this process multiple times to complete the installation of multiple steel strands; Steel strand tensioning and fixing: using jacks to tension and fix a single steel strand, then repeating this process to complete the tensioning and fixing of all steel strands, thereby achieving the fixed installation of the entire cable-stayed cable.

[0004] When a single steel strand is installed, it is in a slack state because it has not yet been tensioned. When the cable threading machine moves multiple steel strands, they are all in the same position. This causes the next steel strand to be transported close to the previous one. Since the steel strands are in a slack state during transport, the two steel strands are prone to tangling during transport. Therefore, the two steel strands need to be separated before subsequent tensioning can be carried out. This results in a longer installation time for the steel strands and reduces the installation efficiency of the cable stay. Summary of the Invention

[0005] To improve the installation efficiency of cable stays, this application provides a cable stay installation structure and construction process for bridges.

[0006] Firstly, the bridge cable-stayed installation structure provided in this application adopts the following technical solution:

[0007] The bridge cable-stayed structure includes two anchors, a cable threading machine for moving the steel strands, jacks for tensioning the steel strands, and fixed circular pipes fixedly installed on the bridge at both ends of the steel strands. The two anchors are respectively movably positioned on the two fixed circular pipes, and the fixed circular pipes are equipped with a drive mechanism to drive the two anchors to move simultaneously.

[0008] By adopting the above technical solution and installing various accessories and anchors, two anchors are movably installed onto two fixed circular pipes. At this time, the steel strand is aligned with one of the anchor holes on the two anchors. Then, one end of the steel strand is passed through the anchor hole of one of the anchors, and the steel strand that has passed through is connected to the cable threading machine. The cable threading machine is started to pass the steel strand through various accessories and then through the anchor hole of the other anchor. Next, clamps are installed on both anchors to position the two ends of the steel strand. Then, the drive mechanism is started to move the two anchors, so that the steel strand that was just installed is moved to one side, and the other anchor hole on the two anchors is aligned with the steel strand on the cable threading machine. Then, the steel strand is continued to be transported to realize the transport of multiple steel strands. Then, the jack is started to tension and fix a single steel strand. Finally, the tension and fixation of multiple steel strands are completed to complete the fixation of one cable. Then, the process continues until all cable stays are completed.

[0009] The drive mechanism activates two anchorages, moving the installed steel strand to one side. Simultaneously, it aligns the other anchor hole on the anchorage with the steel strand connected to the cable threading machine, reducing the probability of tangling during strand movement and improving the installation efficiency of the stay cable. Furthermore, aligning the steel strand with the anchor hole enhances its ease of passage, further improving installation efficiency. After the steel strand passes through the two anchorages initially, it is secured with clamps, thus positioning the anchorages. The drive mechanism connects to both anchorages, allowing them to position the drive mechanism. This reduces the stability requirements during drive assembly installation, significantly simplifying installation and further enhancing the efficiency of stay cable installation.

[0010] Optionally, two drive mechanisms are provided, and the drive mechanism includes:

[0011] A positioning tube is sleeved on and abuts against a fixed round tube for positioning;

[0012] A rotating ring is rotatably mounted on a positioning tube, and the anchor is detachably mounted on the rotating ring.

[0013] A drive assembly, which is detachably mounted on the positioning tube and is used to drive the rotating ring to rotate.

[0014] By adopting the above technical solution, the positioning tube is sleeved and positioned against the fixed round tube, then the anchor is installed on the rotating ring, and then the drive assembly is installed on the positioning tube. The positioning tube is positioned after the first steel strand installation. Therefore, the drive mechanism can be installed by simply sleeved, which greatly improves the convenience of installation. After the steel strand positions the positioning tube, the two drive assemblies are activated to drive the rotating ring and anchor to rotate, thereby driving the anchor to rotate and improving the stability of the drive. Moreover, after one cable is installed, the drive assembly can be removed and moved to the next cable installation site, thereby improving the installation efficiency of the cable.

[0015] Meanwhile, the positioning tube is sleeved on the outside of the fixed round tube, which reduces the probability of dry winding when the positioning tube is located inside the fixed round tube and the steel strand passes through. Therefore, while realizing the connection, it also improves the convenience of steel strand transportation, thereby improving the installation efficiency of the cable stay.

[0016] Optionally, the driving component includes:

[0017] Mounting ring, which is detachably mounted on the positioning tube;

[0018] A drive motor, which is mounted on a mounting ring;

[0019] A drive gear, which is mounted on the output shaft of a drive motor;

[0020] A gear ring is rotatably mounted on a mounting ring and sleeved on a rotating ring, rotating together with the rotating ring.

[0021] By adopting the above technical solution, the mounting ring is installed on the positioning tube, so that the gear ring is fitted onto the rotating ring for positioning. The drive motor starts and drives the drive gear to rotate, which in turn drives the gear ring and the rotating ring to rotate. The rotation of the rotating ring drives the anchor to rotate, thereby driving the rotating ring to rotate. After the cable stay is installed, the mounting ring is separated from the positioning tube and then removed. At the same time, the gear ring is also separated from the rotating ring, which improves the convenience of disassembling and installing the drive component and improves the installation efficiency of the cable stay.

[0022] Optionally, the rotating ring is provided with a plug-in block, and the anchor and the toothed ring are both sleeved on the plug-in block and rotate together with the plug-in block.

[0023] By adopting the above technical solution, the drive component is first installed so that the toothed ring is fitted onto the plug block, and then the anchor is fitted onto the plug block, thereby connecting the toothed ring, rotating ring and anchor and making the three rotate together; during disassembly, the anchor and drive component are removed in sequence, which improves the convenience of the installation process and the installation efficiency of the stay cable.

[0024] Optionally, the mounting ring is provided with a mounting bracket extending to one end of the steel strand passing through the anchor, and the jack is detachably mounted on the mounting bracket.

[0025] By adopting the above technical solution, the installation ring is installed to realize the installation of the installation frame. Then, the jack is fixedly installed on the installation frame. After the jack is activated to clamp the steel strand, it is tensioned and fixed. When the next steel strand needs to be tensioned, the jack is moved to the next place for fixation and tensioning is continued. This improves the convenience of installing the jack and increases the installation efficiency of the cable stay.

[0026] Optionally, the threading machine includes:

[0027] Two guide wheels are rotatably mounted on the bridge and are respectively located on one side close to the two fixed circular tubes;

[0028] A winding rack, which is placed on the bridge;

[0029] A winding reel, which is rotatably mounted on a winding frame;

[0030] A rotating assembly, which is mounted on a take-up frame and is used to drive the take-up reel to rotate;

[0031] The traction rope is wound on a take-up reel and its two ends pass over two guide wheels before being fixedly connected to a clamp. The clamp is used to hold the steel strand for transportation.

[0032] By adopting the above technical solution, the winding frame is placed on the bridge, and two guide wheels are installed on the bridge and located on the side close to the two fixed round pipes respectively. Then, the two ends of the traction rope are wrapped around the two guide wheels and fixedly connected to the clamp. Then, one end of the steel strand is passed through the anchor hole of one of the anchors and connected to the clamp. At this time, the steel strand is aligned with the anchor hole on the anchor.

[0033] Simultaneously, the rotating assembly starts, driving the winding reel to rotate. As the reel rotates, it winds up the cable while simultaneously releasing the traction rope, thus driving the traction rope to move. The movement of the traction rope drives the clamp to move, allowing the steel strand to pass through the anchor hole of another anchor. Then, clamps are installed on the two anchors for positioning, ensuring that both ends of the steel strand pass through the anchor holes of the two anchors. The two anchors then rotate, causing the installed steel strand to turn to one side, and the anchor holes on the two anchors align with the next steel strand, thus enabling the transport of the steel strand. Moreover, during disassembly, the ends connecting the traction rope and the clamp are separated, and the two guide wheels are removed. Then, the cable threading machine can be moved to the next installation location for installation and steel strand transport, thereby improving the convenience of steel strand installation and increasing the installation efficiency of the cable stays.

[0034] Optionally, the clamp includes:

[0035] A fixing plate is provided at both ends of the traction rope;

[0036] Two clamping base plates are slidably disposed on a fixed plate and are close to or far from each other;

[0037] Two clamping components are respectively disposed on two clamping base plates and used to drive the two clamping base plates to move closer or further apart and clamp the steel strand. The clamping components can also adjust the clamping position of the steel strand along the radial direction of the anchor.

[0038] By adopting the above technical solution, the steel strand is passed through two clamping assemblies. The clamping assemblies are activated, causing the two clamping base plates and the two clamping assemblies to move closer to each other and clamp the steel strand, thereby connecting the steel strand to the fixing plate. Then, the traction rope pulls the fixing plate and the steel strand together to transport the steel strand. After the transport is completed, the clamping assemblies release their grip on the steel strand. When the anchor holes through which the steel strand passes are arranged radially with the previous anchor hole, the clamping assemblies adjust the clamping position of the steel strand to adapt, thereby further improving the convenience of transporting multiple steel strands and increasing the installation efficiency of the cable stays.

[0039] Optionally, the clamping assembly includes:

[0040] Two sliding rods are respectively slidably inserted through two clamping base plates and are close to or far from each other;

[0041] Two adjusting plates are respectively slidably disposed on opposite ends of two sliding rods along the radial direction of the anchor, with the sliding direction perpendicular to the sliding direction of the sliding rods; a positioning plate is provided on the end of each sliding rod away from the adjusting plates, which abuts against the clamping base plate for positioning, and a positioning screw is threaded onto the sliding rod for positioning against the adjusting plate; multiple adjusting grooves are opened along the anchor on the side wall of the opposite side of the two adjusting plates, and an arc-shaped adjusting block is provided on the adjusting plate to engage with the adjusting groove;

[0042] A clamping member is disposed on a fixed plate and is used to drive two clamping substrates to move closer or further apart.

[0043] By adopting the above technical solution, the clamping component is activated, causing the two clamping base plates to move closer together, so that the two adjusting plates move closer together to clamp the steel strand for positioning and conveying. After conveying, the clamping component is activated, causing the two adjusting plates to move away from each other. When the clamping position of the steel strand needs to be adjusted, the positioning screw is turned away from the adjusting plate, and then the adjusting plate is pushed or pulled to move the adjusting block to engage with another adjusting slot, thereby realizing the adjustment of the position of the adjusting plate. After adjustment, the positioning screw is turned to press against the adjusting plate for positioning, thereby improving the convenience of adjustment and the installation efficiency of the cable stay.

[0044] Optionally, the rotating assembly includes:

[0045] The first gear is mounted on the take-up reel;

[0046] A rotating motor is mounted on a winding frame;

[0047] The second gear is mounted on the output shaft of the rotating motor and meshes with the first gear.

[0048] By adopting the above technical solution, the rotating motor starts and drives the second gear to rotate, and the rotation of the second gear drives the first gear and the take-up reel to rotate, thereby realizing the rotation of the rotating motor to drive the take-up reel to rotate.

[0049] Secondly, the bridge cable-stayed bridge construction technology provided in this application adopts the following technical solution:

[0050] The construction process for bridge cable stays includes the following steps;

[0051] Accessory installation: Install the cableway pipe, protective pipe, anchor, and two fixed round pipes. The anchor is movably installed on the fixed round pipe and located at both ends of the steel strand.

[0052] Installation of steel strands: Use a cable threading machine to pull a single steel strand to move it, so that the steel strand passes through two anchors and is fixed by clamps. Then, start the drive mechanism to drive the anchors to rotate, so that the installed steel strand is turned to one side. Then continue until all steel strands are installed.

[0053] Tensioning and fixing of steel strands: The jacks are used to tension and fix each individual steel strand. This process is repeated until all steel strands are tensioned and fixed, thus completing the installation of one cable. This process is repeated until all cable stays are completed.

[0054] By adopting the above technical solution, the installation of the cableway pipe, protective pipe, anchor, and two fixed circular pipes is completed first. The anchor is movably installed on the two fixed circular pipes. Then, the steel strand is passed through the anchor hole of one anchor. The cable threading machine is then started to pull the steel strand to move it, so that the steel strand passes through the anchor hole of the other anchor. Next, clamps are installed to fix both ends of the steel strand. Then, the drive mechanism is started to turn the installed steel strand to one side. This process continues until all the steel strands are installed. Then, jacks are used to tension and fix the individual steel strands. This process continues until all the steel strands are installed, thus completing the installation of one cable-stayed section. This process is repeated until all the cable-stayed sections are installed.

[0055] In summary, this application includes at least one of the following beneficial technical effects:

[0056] The drive mechanism activates two anchorages, moving the installed steel strand to one side. Simultaneously, it aligns the other anchor hole on the anchorage with the steel strand connected to the cable threading machine, thereby reducing the probability of tangling during the movement of the steel strand and improving the installation efficiency of the cable. Furthermore, aligning the steel strand with the anchor hole improves the convenience of the steel strand passing through the anchor hole, thus further enhancing the installation efficiency of the cable. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the structure of this application;

[0058] Figure 2 This is a schematic diagram of the drive mechanism in this application;

[0059] Figure 3 This is a partial exploded view of the drive mechanism in this application;

[0060] Figure 4 This is a schematic diagram of the cable-threading mechanism in this application;

[0061] Figure 5 This is a schematic diagram of the fixture in this application.

[0062] Reference numerals: 1. Anchorage; 11. Bridge; 12. Bridge deck; 13. Tower; 14. First opening; 15. Second opening; 16. Cableway pipe; 17. Protective pipe; 18. Fixed circular pipe; 19. Connecting sleeve; 2. Drive mechanism; 21. Positioning pipe; 22. Rotating ring; 23. Sleeve part; 24. Abutment part; 25. Insertion block; 3. Drive assembly; 31. Mounting ring; 32. Drive motor; 33. Drive gear; 34. Gear ring; 35. Mounting plate; 36. Mounting rod; 37. 1. Mounting frame; 38. Mounting hole; 4. Cable threading machine; 41. Guide wheel; 42. Rewinding frame; 43. Rewinding reel; 44. Traction rope; 45. Fixing ring; 5. Rotating assembly; 51. First gear; 52. Rotating motor; 53. Second gear; 6. Clamp; 61. Fixing plate; 62. Clamping base plate; 63. Adjusting groove; 64. Clamping groove; 65. Adjusting block; 7. Clamping assembly; 71. Sliding rod; 72. Adjusting plate; 73. Clamping component; 74. Positioning screw; 75. Positioning plate. Detailed Implementation

[0063] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0064] This application discloses the installation structure and construction process for bridge cable stays.

[0065] Reference Figure 1 and Figure 2 The cable-stayed bridge installation structure includes two anchorages 1, a cable threading machine 4 for moving the steel strands, and jacks for tensioning the steel strands. The two ends of the steel strands pass through the anchor holes of the two anchorages 1, so that the steel strands coincide with the axis of the anchor holes.

[0066] Bridge 11 includes bridge deck 12 and tower 13 located on the upper surface of bridge deck 12. The tower 13 has an installation chamber inside. A first hole 14 is opened on the upper surface of bridge deck 12, which is inclined and communicates with the lower surface of bridge deck 12. A second hole 15 is opened on the side wall of tower 13 near the first hole 14, which communicates with the installation chamber. The axes of the second hole 15 and the first hole 14 are coincident. A cableway pipe 16 extending above bridge deck 12 is coaxially fixedly installed on the first hole 14. A protective pipe 17 extending out of the side wall of tower 13 near the cableway pipe 16 is coaxially fixedly installed on the second hole 15.

[0067] Reference Figure 1 and Figure 2A fixed circular tube 18 is coaxially fixedly installed in both the installation chamber and on the lower surface of the bridge deck 12. The fixed circular tube 18 can be made by pouring concrete or fixedly installed by metal pipe as needed. The fixed circular tube 18, cableway tube 16 and protective tube 17 have the same inner diameter. The two anchors 1 are respectively movably set on the two fixed circular tubes 18 for positioning. The two ends of the steel strand pass through the two fixed circular tubes 18 respectively, and then the two ends of the steel strand are fixed by clamps, so that the two fixed circular tubes 18 are located at the two ends of the steel strand. The fixed circular tube 18 is provided with a drive mechanism 2 that drives the two anchors 1 to move simultaneously.

[0068] Reference Figure 2 and Figure 3 Two drive mechanisms 2 are provided and located at two fixed circular tubes 18 respectively. The drive mechanism 2 includes a positioning tube 21, a rotating ring 22, and a drive assembly 3. The positioning tube 21 includes a sleeve part 23 and an abutment part 24 that are coaxially connected. The sleeve part 23 is coaxially sleeved on the outer wall of the fixed circular tube 18, while the abutment part 24 abuts against the end face of the fixed circular tube 18 for positioning. At the same time, the inner diameter of the abutment part 24 is greater than or equal to the inner diameter of the fixed circular tube 18. The rotating ring 22 is coaxially rotatably installed on the end of the abutment part 24 that is away from the fixed circular tube 18. The inner diameter of the rotating ring 22 is the same as the inner diameter of the abutment part 24, while the outer diameter of the rotating ring 22 is equal to the outer diameter of the abutment part 24.

[0069] Anchor 1 is detachably installed on the end of rotating ring 22 away from abutting part 24. A plug block 25 is fixedly installed on the end of rotating ring 22 away from abutting part 24. The plug block 25 is hollow and has a plug hole for steel strand to pass through. The plug hole and the fixed round tube 18 have the same axis and the same inner diameter. A connecting sleeve 19 is fixedly installed on the end of anchor 1 near plug block 25. The connecting sleeve 19 is sleeved on plug block 25 and rotates together with plug block 25. Anchor 1 is positioned against plug block 25. At the same time, pushing anchor 1 away from plug block 25 can separate anchor 1 from plug block 25.

[0070] The drive assembly 3 is detachably mounted on the positioning tube 21 and is used to drive the rotating ring 22 to rotate. The drive assembly 3 includes a mounting ring 31, a drive motor 32, a drive gear 33 and a gear ring 34. The mounting ring 31 is sleeved on the outer wall of the sleeve part 23 and is fixedly connected to the sleeve part 23 by multiple screws. A mounting plate 35 is coaxially fixedly mounted on the outer wall of the mounting ring 31, and the drive motor 32 is fixedly mounted on the mounting plate 35, and the piston rod of the drive motor 32 extends to one side of the insertion block 25.

[0071] The drive gear 33 is keyed to the output shaft of the drive motor 32, while the gear ring 34 is rotatably mounted on the end of the mounting ring 31 near the plug-in block 25. The gear ring 34 is slidably sleeved on the plug-in block 25, and the gear ring 34 is located between the rotating ring 22 and the anchor 1. The drive gear 33 is located on the side of the gear ring 34 away from the plug-in block 25 and meshes with the gear ring 34. During installation, the gear ring 34 is first sleeved onto the plug-in block 25 for positioning, the mounting ring 31 is moved to the installation position, and then the screw is threaded through the mounting ring 31 and connected to the sleeve part 23 for positioning, thereby realizing the connection of the mounting ring 31, the gear ring 34 and the positioning tube 21. Then the anchor 1 is connected to the plug-in block 25.

[0072] An installation rod 36 is fixedly installed on the end of the mounting plate 35 away from the mounting ring 31, extending to the side of the abutment part 24 away from the fixed round tube 18. An installation frame 37 is fixedly installed on the installation rod 36. When tensioning the steel strand, the jack is fixedly installed on the installation frame 37. The installation frame 37 has multiple installation holes 38 that correspond one-to-one with multiple anchor holes. The installation holes 38 are for the steel strand to pass through and have a diameter larger than the diameter of the steel strand. The installation holes 38 are used to position the jack, thereby improving the accuracy of the jack's position when tensioning the steel strand and improving the tensioning effect.

[0073] Reference Figure 1 and Figure 4 The cable-threading machine 4 includes two guide wheels 41, a winding frame 42, a winding reel 43, a rotating assembly 5, a traction rope 44, and a clamp 6. Fixed rings 45 are detachably installed on the opposite ends of the two cableway pipes 16 and the protective pipe 17. The two guide wheels 41 are rotatably mounted on the lower surfaces of the two fixed rings 45 respectively. The winding frame 42 is placed on the upper surface of the bridge deck 12, and the winding reel 43 is rotatably mounted on the winding frame 42 and is in a horizontal state. The rotating assembly 5 is set on the winding frame 42 and is used to drive the winding reel 43 to rotate.

[0074] The rotating assembly 5 includes a first gear 51, a rotating motor 52, and a second gear 53. The first gear 51 is keyed to one end of the winding reel 43, while the rotating motor 52 is horizontally fixed on the winding frame 42 and located on one side of the winding reel 43. The second gear 53 is keyed to the output shaft of the rotating motor 52 and meshes with the first gear 51 to drive the winding reel 43 to rotate. The traction rope 44 is wound on the winding reel 43 with both ends outside the winding reel 43. The two ends of the traction rope 44 pass over two guide wheels 41 and are fixedly connected to the clamp 6. The clamp 6 is used to clamp the steel strand. The clamp 6 can also be adjusted to clamp the steel strand at different positions. The rotation of the winding reel 43 drives the traction rope 44, the clamp 6, and the steel strand to move together.

[0075] Reference Figure 4 and Figure 5The clamp 6 includes a fixed plate 61, two clamping base plates 62, and a clamping assembly 7. The two ends of the fixed plate 61 are fixedly installed on the two ends of the traction rope 44, and the upper surface of the fixed plate 61 is parallel to the axis of the steel strand. The bottom ends of the two clamping base plates 62 are horizontally slidably installed on the upper surface of the fixed plate 61 and are close to or far from each other. At the same time, the two clamping base plates 62 are located on both sides of the steel strand. The clamping assembly 7 is disposed on the two clamping base plates 62 and is used to drive the two clamping base plates 62 to move closer or further apart and to clamp the steel strand. At the same time, the clamping assembly 7 can also adjust the clamping position of the steel strand radially along the anchor 1.

[0076] Reference Figure 2 and Figure 5 The clamping assembly 7 includes two sliding rods 71, two adjusting plates 72, and clamping members 73. The two sliding rods 71 ​​are horizontally slidably mounted on the sidewalls of the two clamping base plates 62 on opposite sides, and the sliding direction of the sliding rods 71 ​​is parallel to the upper surface of the fixing plate 61. Multiple adjusting grooves 63 are formed on the sidewalls of the two clamping base plates 62 along a path perpendicular to the upper surface of the fixing plate 61. The adjusting grooves 63 correspond one-to-one with multiple anchor holes arranged radially on the anchor 1. Two sliding rods 71 ​​are spaced apart on the same clamping base plate 62. The section plate 72 is slidably mounted on one end of two sliding rods 71 ​​located on the same clamping base plate 62 in a direction perpendicular to the upper surface of the fixed plate 61. One of the sliding rods 71 ​​is threaded with a positioning screw 74 that abuts against the adjusting plate 72 for positioning. The positioning screw 74 is used to position the adjusting plate 72 in the radial direction of the anchor 1. The two adjusting plates 72 are located between the two clamping base plates 62, and the end of the sliding rod 71 away from the adjusting plate 72 is fixedly mounted with a positioning plate 75 that abuts against the clamping base plate 62 for positioning.

[0077] An arc-shaped clamping groove 64 is provided on the side wall of the two adjusting plates 72 on opposite sides. The two adjusting plates 72 cooperate to clamp the steel strand, and the steel strand is located in the clamping groove 64. An arc-shaped adjusting block 65 is fixedly installed on the side wall of the adjusting plate 72 near the adjusting groove 63. When the adjusting block 65 is engaged with one of the adjusting grooves 63, the clamping groove 64 is aligned with the anchor holes arranged radially on the anchor 1.

[0078] The two clamping components 73 are activated, causing the two clamping base plates 62 to move closer to each other, so that the two adjusting plates 72 move closer to each other to clamp the steel strand, and then the steel strand is conveyed. After the conveying is completed, the two clamping components 73 are activated, causing the two clamping base plates 62 and the two adjusting plates 72 to move away from each other. If there is no need to move the position of the adjusting plates 72, the clamping of the steel strand will continue to be activated.

[0079] When adjustment is needed, pull the two adjusting plates 72 closer together, then loosen the positioning screw 74 to disengage from the adjusting plates 72. Next, push the adjusting plates 72 to move, so that the adjusting block 65 engages with other adjusting slots 63 to adjust the position of the adjusting plates 72. After adjustment, push the two adjusting plates 72 closer together and against the two clamping base plates 62 for positioning. Finally, loosen the positioning screw 74 to press against the adjusting plates 72, thereby clamping the steel strands at different positions. Moreover, after the adjusting plates 72 move, they separate from the installed steel strands. Therefore, the moving adjusting plates 72 do not contact the installed steel strands, reducing the probability of collision between the steel strands and the installed steel strands during transport.

[0080] The working principle of this application embodiment is as follows:

[0081] First, fix and install accessories such as cableway pipe 16 and protective pipe 17. Then, position pipe 21 is fitted onto fixed round pipe 18 for positioning. Next, toothed ring 34 is fitted onto plug-in block 25. Then, screws are threaded through mounting ring 31 and connected to positioning pipe 21 for positioning. This is used to install drive mechanism 2 and mounting frame 37. Then, anchor 1 is slid and fitted onto plug-in block 25 so that anchor 1 abuts against plug-in block 25 for positioning. This is used to connect accessories, anchor 1 and drive mechanism 2.

[0082] The winding frame 42 is placed on the bridge deck 12, and the two guide wheels 41 are fixedly installed on the protective pipe 17 and the cableway pipe 16 respectively. Then, the two ends of the traction rope 44 are passed around the two guide wheels 41 and fixedly connected to the clamp 6 to complete the installation of the cable threading machine 4. One end of the steel strand is passed through the anchor hole of the anchor 1 located on the bridge deck 12. Then, the steel strand passes through the two clamping slots 64. The two clamping pieces 73 are activated to clamp the steel strand. Then, the motor 52 is turned to start pulling the clamp 6 to move, so that the steel strand passes through the anchor hole of another anchor 1. Then, the clamping piece is installed in the anchor hole to position the two ends of the steel strand to realize the installation of a single steel strand. Then, the two clamping pieces 73 drive the two adjusting plates 72 to move away from each other. Then, the motor 52 is turned to rotate and drive the clamp 6 back to its original position.

[0083] Tighten the positioning screw 74 to disengage from the adjusting plate 72, then move the adjusting plate 72 to adjust its position. After adjustment, tighten the positioning screw 74 to position the adjusting plate 72, and then continue to transport and install the next steel strand. This is to install the steel strands on the anchor holes arranged radially on the anchor 1. Then, start the drive motor 32 to drive the installed steel strands in the same radial direction to one side, and continue to install steel strands in the same way until all steel strands are installed. Then, fix the jack on the mounting frame 37, and then tension the single steel strand. After tensioning, remove the jack, and then remove the drive assembly 3 and the cable threading machine 4 to complete the installation of the steel strands. This completes the installation of one cable. Then repeat the process until all cable stays are completed, which improves the convenience of steel strand installation and the efficiency of cable stay installation.

[0084] This application discloses the construction process of bridge cable stays.

[0085] Reference Figure 1 and Figure 2 The construction process of bridge cable stays includes the following steps;

[0086] Accessory installation: Install cableway pipe 16, protective pipe 17, anchor 1 and two fixed round pipes 18. Anchor 1 is movably installed on the fixed round pipe 18 and located at both ends of the steel strand.

[0087] Installation of steel strands: Use the cable threading machine 4 to pull a single steel strand to move it, so that the steel strand passes through two anchors 1 and is fixed by the clamps. Then, the drive mechanism 2 is started to drive the anchors 1 to rotate, so that the installed steel strands are turned to one side. Then continue until all steel strands are installed.

[0088] Tensioning and fixing of steel strands: The jacks are used to tension and fix each individual steel strand. This process is repeated until all steel strands are tensioned and fixed, thus completing the installation of one cable-stayed section. This process is repeated until all cable-stayed sections are installed.

[0089] The working principle of this application embodiment is as follows:

[0090] First, install the cableway pipe 16, protective pipe 17, anchor 1, and two fixed round pipes 18. Anchor 1 is movably installed on the two fixed round pipes 18. Then, pass the steel strand through the anchor hole of one anchor 1. Then, start the cable threading machine 4 to pull the steel strand to move it, so that the steel strand passes through the anchor hole of the other anchor 1. Next, install clamps to fix both ends of the steel strand. Then, start the drive mechanism 2 to turn the installed steel strand to one side. Then, continue until all steel strands are installed. Then, use jacks to tension and fix the individual steel strands. Then, continue until all steel strands are installed. This completes the installation of one cableway. Then, repeat the process until all cableway construction is completed.

[0091] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bridge cable-stayed installation structure, comprising two anchorages (1), a cable threading machine (4) for moving the steel strands, and jacks for tensioning the steel strands, characterized in that: It also includes a fixed round pipe (18) that is fixedly installed on the bridge (11) and located at both ends of the steel strand. The two anchors (1) are respectively movably positioned on the two fixed round pipes (18). The fixed round pipes (18) are provided with a driving mechanism (2) that drives the two anchors (1) to move simultaneously. Two drive mechanisms (2) are provided, and each drive mechanism (2) includes: Positioning tube (21), which is sleeved on and abuts against the fixed round tube (18) for positioning; A rotating ring (22) is rotatably mounted on a positioning tube (21), and the anchor (1) is detachably mounted on the rotating ring (22). The drive assembly (3) is detachably mounted on the positioning tube (21) and is used to drive the rotating ring (22) to rotate.

2. The bridge cable-stayed installation structure according to claim 1, characterized in that: The driving component (3) includes: Mounting ring (31), which is detachably mounted on positioning tube (21); A drive motor (32) is mounted on a mounting ring (31); A drive gear (33) is mounted on the output shaft of a drive motor (32); A gear ring (34) is rotatably mounted on a mounting ring (31) and sleeved on a rotating ring (22) and rotates together with the rotating ring (22).

3. The bridge cable-stayed installation structure according to claim 2, characterized in that: The rotating ring (22) is provided with a plug-in block (25), and the anchor (1) and the toothed ring (34) are both sleeved on the plug-in block (25) and rotate together with the plug-in block (25).

4. The bridge cable-stayed installation structure according to claim 2, characterized in that: The mounting ring (31) is provided with a mounting frame (37) extending to one end of the steel strand passing through the anchor (1), and the jack is detachably mounted on the mounting frame (37).

5. The bridge cable-stayed installation structure according to claim 3, characterized in that: The threading machine (4) includes: Two guide wheels (41) are rotatably mounted on the bridge (11) and are respectively located on one side close to the two fixed round tubes (18); A winding rack (42) is placed on the bridge (11); A take-up reel (43) is rotatably mounted on a take-up frame (42); Rotating assembly (5), which is mounted on the take-up frame (42) and is used to drive the take-up reel (43) to rotate; The traction rope (44) is wound on the winding reel (43) and its two ends pass over two guide wheels (41) respectively before being fixedly connected to the clamp (6). The clamp (6) is used to clamp the steel strand for transportation.

6. The bridge cable-stayed installation structure according to claim 5, characterized in that: The clamp (6) includes: Fixing plate (61), said fixing plate (61) is set on both ends of traction rope (44); Two clamping substrates (62) are slidably disposed on a fixing plate (61) and are close to or far from each other; Two clamping components (7) are respectively disposed on two clamping base plates (62) and are used to drive the two clamping base plates (62) to move closer or further away from each other and to clamp the steel strand. The clamping components (7) can also adjust the clamping position of the steel strand radially along the anchor (1).

7. The bridge cable-stayed installation structure according to claim 6, characterized in that: The clamping assembly (7) includes: Two sliding rods (71) are respectively slidably mounted on two clamping base plates (62) and are close to or far from each other; Two adjusting plates (72) are respectively slidably disposed on opposite ends of two sliding rods (71) along the anchor (1) and the sliding direction is perpendicular to the sliding direction of the sliding rods (71); a positioning plate (75) is provided on the end of the two sliding rods (71) away from the adjusting plates (72) to abut against the clamping base plate (62) for positioning; a positioning screw (74) is threadedly connected to the sliding rod (71) to abut against the adjusting plate (72) for positioning; multiple adjusting grooves (63) are opened along the anchor (1) on the side wall of the opposite side of the two adjusting plates (72), and an adjusting block (65) in an arc shape is provided on the adjusting plate (72) to engage with the adjusting groove (63); A clamping member (73) is disposed on a fixed plate (61) and is used to drive two clamping base plates (62) to move closer or further apart from each other.

8. The bridge cable-stayed installation structure according to claim 5, characterized in that: The rotating assembly (5) includes: The first gear (51) is mounted on the take-up reel (43); A rotating motor (52) is mounted on a winding frame (42); The second gear (53) is mounted on the output shaft of the rotating motor (52) and meshes with the first gear (51).

9. A bridge cable-stayed cable construction process applied to the installation structure described in any one of claims 1-8, characterized in that: The construction steps include the following; Accessory installation: Install the cableway pipe (16), protective pipe (17), anchor (1) and two fixed round pipes (18). The anchor (1) is movably installed on the fixed round pipe (18) and located at both ends of the steel strand. Installation of steel strands: Use a cable threading machine (4) to pull a single steel strand to move it, so that the steel strand passes through two anchors (1) and is fixed by clamps. Then, the drive mechanism (2) is started to drive the anchors (1) to rotate, so that the installed steel strands are turned to one side. Then continue until all steel strands are installed. Tensioning and fixing of steel strands: The jacks are used to tension and fix each individual steel strand. This process is repeated until all steel strands are tensioned and fixed, thus completing the installation of one cable-stayed section. This process is repeated until all cable-stayed sections are installed.

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