Parallel steel wire inclined cable tension and compression combined traction device and construction method thereof

Abstract

The present invention discloses a combined tension-compression traction device for parallel steel wire inclined cables and a construction method thereof. By providing a traction device, a steering system and a back-pressure system and performing combined construction, the problem of limited traction space for inclined cables at the anchor plate anchoring structure at the beam end is overcome, and at the same time, long-distance and large-tonnage continuous traction of ultra-long and ultra-heavy parallel steel wire inclined cables is realized, filling the gap in this technology. The combined tension-compression traction device for parallel steel wire inclined cables and the construction method thereof of the present invention have less force conversion during the construction process, low safety risk, and significantly improved traction efficiency. The device can adapt to the traction of inclined cables at different angles, ensure traction alignment accuracy, and improve construction quality.

Description

Technical Field

[0001] The present invention relates to the technical field of inclined cable construction, and more specifically, to a parallel steel wire inclined cable tension and compression combined traction device and a construction method thereof. Background Art

[0002] A cable-stayed bridge is a type of bridge that uses many cables to pull the main beam directly onto the tower. It is a structural system composed of the main beam, tower, and cable. It is one of the most important types of long-span bridges and the most popular type of long-span bridges in my country. The cable is the main load-bearing structure that directly transfers the weight of the main beam and bridge deck of the cable-stayed bridge to the tower. Currently, the most commonly used cable-stays are parallel steel wire cables and steel strand cables.

[0003] The parallel steel wire cable is a finished cable and must be installed as a whole. As the span of the cable-stayed bridge becomes larger and larger, the diameter, length and deadweight of the cable are getting larger and larger. The cable is in the shape of a catenary during hanging and after installation. The extra-long and extra-heavy cable requires a large traction force under the action of its own weight and axial force, which brings great difficulties to the installation of the cable. When the cable is anchored on the top surface of the steel truss beam with an anchor plate structure, the traction space at the end of the cable beam is limited, which further increases the difficulty of installing the cable. Conventional traction methods cannot meet the requirements of safe and efficient traction of extra-long and extra-heavy cables. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] Another object of the present invention is to provide a parallel steel wire inclined cable tension and compression combined traction device and a construction method thereof, so as to solve the technical problems in the prior art that the inclined cables are difficult to install, have low positioning accuracy, and have low installation efficiency.

[0006] In order to achieve these purposes and other advantages according to the present invention, a parallel steel wire inclined cable tension and compression combined traction device is provided, which is installed on the top surface of the steel truss beam, an anchor plate is fixed on the top surface of the steel truss beam, a cable guide tube is fixed on the upper end of the anchor plate, and an anchor cup is provided at the end to be pulled of the inclined cable, comprising:

[0007] The steering system includes a steering seat fixed on the top surface of the steel truss beam, a guide roller is installed on the steering seat, and the axial direction of the guide roller is horizontally arranged and perpendicular to the traction direction of the inclined cable;

[0008] A traction device, wherein a traction rope is passed through the interior thereof, and one end of the traction rope passes through the traction device, passes around the guide roller from below, passes upward through the cable guide tube, and is connected to the outer end of the anchor cup of the inclined cable;

[0009] A back-pressure system comprises a reaction beam fixed at the upper end of an anchor plate, a back-pressure support tube and a back-pressure beam are arranged upward in sequence above the reaction beam, a first through hole is arranged in the middle of the reaction beam, a second through hole is arranged in the middle of the back-pressure beam, the end of the inclined cable to be pulled passes through the first through hole and the back-pressure support tube in sequence, the upper end of the back-pressure support tube is fixed to the back-pressure beam, and the lower end contacts the upper end of the anchor cup, the first through hole, the second through hole, the back-pressure support tube, and the cable guide tube are coaxially arranged, and the outer diameter of the back-pressure support tube is larger than the second through hole, the back-pressure support tube and the anchor cup can both pass through the first through hole, and tensioning components are respectively connected between the left and right ends of the reaction beam and the corresponding ends of the back-pressure beam.

[0010] Preferably, the tensioning assembly includes a tensioning rod and a jack, the jack and the tensioning rod are both arranged along the axial direction of the back-pressure support cylinder, the jack is installed on the side of the reaction beam facing the cable guide tube, one end of the tensioning rod is connected to the corresponding end of the back-pressure beam, and the other end passes through the corresponding end of the reaction beam and is connected to the pushing end of the jack at the corresponding end.

[0011] Preferably, the counter-pressure support cylinder is composed of a pair of semicircular cylinder plates, both ends of which extend radially to form mounting portions, each mounting portion is provided with bolt holes spaced axially, and the two opposite bolt holes of a pair of cylinder plates are connected by bolts.

[0012] Preferably, the tractor comprises:

[0013] A base frame, which is fixed to the top surface of the steel truss and has a transversely penetrating mounting groove;

[0014] A fixed holder fixed to one end of the mounting slot;

[0015] A roller group is arranged at the other end of the mounting groove;

[0016] A movable clamper is arranged between the fixed clamper and the roller assembly and is slidably connected to the side wall of the mounting groove;

[0017] The push cylinder is symmetrically arranged between the fixed clamp and the movable clamp, and the push direction is consistent with the through direction of the installation slot. The cylinder body of each push cylinder is fixed on one side of the installation slot close to the fixed clamp, and the telescopic end is connected to the movable clamp;

[0018] The traction rope passes through the roller group, the movable clamp and the fixed clamp in sequence along the through direction of the installation groove and is connected with the anchor cup.

[0019] Preferably, the steering seat includes a base plate fixed on the top surface of the steel truss, a pair of vertical plates are relatively fixed on the base plate, and a plurality of guide rollers are arranged between the pair of vertical plates and are rotatably connected to the pair of vertical plates through bearings.

[0020] Preferably, the guide rollers are provided with a plurality of them, and the two ends of the axis of the guide rollers are symmetrically connected to the bearings outwardly, and the outer side of each bearing is matched with a bearing seat, and each bearing seat is provided with a first wing plate and a second wing plate radially outwardly, and all the first wing plates are provided with a circular first hinge hole, and all the second wing plates are provided with a circular second hinge hole, and the first hinge hole and the second hinge hole are located at the two ends of the same diameter of the corresponding bearing seat, and each first hinge hole on the corresponding adjacent side of the vertical plate is provided with a first mounting hole, and the first mounting hole and the corresponding The first hinge hole is hinged by inserting a first hinge rod into it. A second hinge hole on the adjacent side of the vertical plate closest to the traction device is provided with a second mounting hole, and other second hinge holes on the adjacent side are respectively provided with an arc-shaped channel. The center of the channel is located at the center of the first mounting hole of the corresponding bearing seat. A second hinge rod is inserted into the second hinge hole. The outer end of the second hinge rod extends into the corresponding second mounting hole or the channel. The channel is slidably connected to the corresponding second hinge rod. Both ends of each second hinge rod are respectively threaded with fastening nuts.

[0021] The present invention also provides a construction method of a parallel steel wire inclined cable tension-compression combined traction device, and the specific construction steps are as follows:

[0022] S1: When the winch pulls the inclined cable into place, install the traction device and the steering device at the position of the cable guide tube, pass the traction rope through the traction device, then pass around the guide roller from the bottom of the guide roller, pass through the cable guide tube upwards and connect with the outer end of the anchor cup of the inclined cable;

[0023] S2: Pull the traction rope through the traction device to make the anchor cup of the inclined cable enter the cable guide tube, and then install the back pressure system;

[0024] S3: shorten the distance between the counter-pressure beam and the reaction beam through the tensioning assembly, so that the counter-pressure beam drives the counter-pressure support tube to counter-press the anchor cup until the anchor cup enters the anchoring position, and installs the anchor cup anchor nut;

[0025] S4: Adjust the position of the guide roller on the steering system to adapt to the steering angle required by the traction rope corresponding to the next inclined cable;

[0026] S5: Repeat steps S1-S4 to complete the traction of all the inclined cables.

[0027] Preferably, in step S1, preliminary alignment of the inclined cable is achieved by setting a guide rod, the upper end of the guide rod is detachably connected to the outer end of the anchor cup, the outer diameter of the guide rod is consistent with the inner diameter of the cable guide tube, the outer wall of the guide rod is slidably connected to the inner wall of the cable guide tube, and the length of the guide rod is greater than the length of the cable guide tube.

[0028] Preferably, in step S4, the position of the guide roller on the steering system is adjusted by setting a positioning system on the base plate, the positioning system comprising a pair of flat plates arranged corresponding to a pair of vertical plates, each flat plate being fixed to the outer side of the corresponding vertical plate, each flat plate being provided with a slide groove along the length direction of the vertical plate, each channel sliding connection corresponding to the adjacent side in the slide groove is provided with a limit groove opening upward, each limit groove is sleeved outside a second hinge rod and the groove width is consistent with the diameter of the second hinge rod, a positioning cylinder is arranged on the flat plate corresponding to each limit groove, the cylinder body of the positioning cylinder is fixed on the flat plate, and the telescopic end is connected to the corresponding limit groove, when adjusting the position of the guide roller, the positioning cylinder is driven to telescopically move in a horizontal direction parallel to the slide groove to drive the limit groove to move, and the second hinge rod follows the movement of the corresponding limit groove, thereby driving the corresponding bearing seat to rotate, thereby adjusting the position of the guide roller.

[0029] Preferably, an operation terminal, a control chip, and a conversion module are further provided outside the steering system. The operation terminal is connected to the conversion module, and the conversion module and all the adjustment cylinders are connected to the control chip respectively. The operation terminal is used to input the curvature radius of the required steering angle and transmit it to the conversion module. The conversion module is used to convert the input curvature radius into a horizontal displacement value and transmit it to the control chip. The control chip is used to control all the adjustment cylinders to extend and retract according to the corresponding horizontal displacement value. When adjusting the position of the guide roller on the steering system, the cylinder body of each adjustment cylinder is first fixed according to the initial position of the guide roller and the limit groove is connected to the telescopic end, and the notch of each limit groove is sleeved outside the second articulated rod in the corresponding channel. Then, the extension amount of each adjustment cylinder is generated by inputting the curvature radius in the operation terminal. The control chip controls the extension and retraction of the adjustment cylinder, and controls the movement of the corresponding second articulated rod through the limit groove. The second articulated rod rotates around the corresponding first articulated rod along the channel, thereby changing the position of the corresponding guide roller, and then the second articulated rod is tightened.

[0030] The present invention includes at least the following beneficial effects: the parallel steel wire inclined cable tension-compression combined traction device and the construction method thereof of the present invention are provided with a traction device, a steering system and a back-pressure system, which overcomes the problem of limited traction space of the inclined cable at the anchor plate anchoring structure of the beam end, and at the same time realizes long-distance and large-tonnage continuous traction of ultra-long and ultra-heavy parallel steel wire inclined cables, filling the gap in this technology. The parallel steel wire inclined cable tension-compression combined traction device and the construction method thereof of the present invention have less force conversion during the construction process, low safety risk, and significantly improved traction efficiency. It can adapt to the traction of inclined cables at different angles, ensure traction alignment accuracy, and improve construction quality.

[0031] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a main structural view of the parallel steel wire inclined cable tension and compression combined traction device of the present invention when in use;

[0033] Figure 2 It is a side structural diagram of the parallel steel wire inclined cable tension and compression combined traction device of the present invention when in use;

[0034] Figure 3 It is a top view of the structure of the back pressure support cylinder of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the tractor of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the present invention when using a guide rod;

[0037] Figure 6 It is a structural schematic diagram of the steering system of the present invention;

[0038] Figure 7 It is a structural schematic diagram of the positioning system of the present invention.

[0039] Explanation of the reference numerals in the specification: 1. top surface of steel truss beam, 2. anchor plate, 3. cable guide tube, 4. inclined cable, 5. anchor cup, 6. steering seat, 7. guide roller, 8. tractor, 9. traction rope, 10. reaction beam, 11. counter-pressure support cylinder, 12. counter-pressure beam, 13. first through hole, 14. second through hole, 15. tension rod, 16. jack, 17. mounting portion, 18. base frame, 19. mounting groove, 20. fixed clamp, 21. roller group, 22. movable clamp, 23. push cylinder, 24. bottom plate, 25. vertical plate, 26. bearing seat, 27. first wing plate, 28. second wing plate, 29. first hinged rod, 30. second hinged rod, 31. channel, 32. guide rod, 33. flat plate, 34. limit groove, 35. positioning cylinder. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0041] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] like Figure 1-6 As shown, the present invention provides a parallel steel wire inclined cable tension and compression combined traction device, which is installed on the top surface 1 of the steel truss beam, the top surface 1 of the steel truss beam is fixed with an anchor plate 2, the upper end of the anchor plate 2 is fixed with a cable guide 3, and the end to be pulled of the inclined cable 4 is provided with an anchor cup 5, comprising:

[0043] The steering system comprises a steering seat 6 fixed on the top surface 1 of the steel truss, a guide roller 7 is mounted on the steering seat 6, and the axial direction of the guide roller 7 is horizontally arranged and perpendicular to the traction direction of the inclined cable 4;

[0044] A traction device 8, inside of which a traction rope 9 is passed, one end of the traction rope 9 passes through the traction device 8, passes around the guide roller 7 from below, passes upward through the cable guide tube 3, and is connected to the outer end of the anchor cup 5 of the inclined cable 4;

[0045] The back-pressure system includes a reaction beam 10 fixed to the upper end of the anchor plate 2, a back-pressure support tube 11 and a back-pressure beam 12 are sequentially arranged upward above the reaction beam 10, a first through hole 13 is arranged in the middle of the reaction beam 10, and a second through hole 14 is arranged in the middle of the back-pressure beam 12, the end to be pulled of the inclined cable 4 passes through the first through hole 13 and the back-pressure support tube 11 in sequence, the upper end of the back-pressure support tube 11 is fixed to the back-pressure beam 12, and the lower end is in contact with the upper end of the anchor cup 5, the first through hole 13, the second through hole 14, the back-pressure support tube 11, and the cable guide tube 3 are coaxially arranged, and the outer diameter of the back-pressure support tube 11 is larger than the second through hole 14, the back-pressure support tube 11 and the anchor cup 5 can both pass through the first through hole 13, and tensioning components are respectively connected between the left and right ends of the reaction beam 10 and the corresponding ends of the back-pressure beam 12.

[0046] When in use, first install the anchor plate 2 and the cable guide tube 3 on the top surface 1 of the steel truss beam, fix the upper end of the back pressure support tube 11 to the lower end of the back pressure beam 12, keep the second through hole 14 and the back pressure support tube 11 coaxially arranged, and make the to-be-pulled end of the inclined cable 4 pass through the second through hole 14 and penetrate into the back pressure beam 12 and the back pressure support tube 11 in sequence before installing the anchor cup 5 on the inclined cable 4. After the inclined cable 4 is initially pulled to the vicinity of the cable guide tube 3 by the winch, install the tractor 8 and the steering system near the anchor plate 2. The system is located between the tractor 8 and the anchor plate 2 and is arranged near the bottom of the cable guide tube 3. The tractor 8 and the steering seat 6 with the guide roller 7 are fixed to the top surface 1 of the steel truss beam. The reaction beam 10 is fixed to the upper end of the anchor plate 2, so that the axis of the first through hole 13 of the reaction beam 10 is aligned with the axis of the cable guide tube 3. The reaction beam 10 and the counter-pressure beam 12 are both steel structures. Then, the traction rope 9 is pulled out from the drum and passes through the tractor 8, and then passes through the cable guide tube 3 from bottom to top and is connected to the anchor cup 5 of the inclined cable 4. The traction device 8 controls and drives the traction rope 9, thereby driving the inclined cable 4 to move. Since the inner diameter of the first through hole 13 is larger than the outer diameter of the anchor cup 5, the anchor cup 5 can pass through the first through hole 13; when the anchor cup 5 part of the inclined cable 4 enters the upper end of the cable guide tube 3, the back pressure system is further installed at the upper end of the anchor plate 2, and the lower end of the back pressure support cylinder 11 is made to contact the upper end of the anchor cup 5, and then the tensioning components are respectively installed between the two ends of the reaction beam 10 and the two ends of the back pressure beam 12; the two tensioning components are started to move. Synchronous tensioning is performed to reduce the distance between the reaction beam 10 and the counter-pressure beam 12, so that the lower end of the counter-pressure support cylinder 11 counter-pressures the anchor cup 5 toward the cable guide tube 3. During the counter-pressure process, the counter-pressure support cylinder 11 enters the cable guide tube 3 together with the anchor cup 5; when the anchor cup 5 enters the anchor position to complete the traction task, the anchor cup 5 anchor nut is installed on the anchor cup 5, and then the tractor 8 and the steering system are removed and moved to the vicinity of the cable guide tube 3 of the next anchor plate 2 for installation and arrangement, and the operation is repeated to complete the traction of other inclined cables 4.

[0047] By setting up a traction device 8, a steering system, and a back-pressure system for combination, the traction rope 9 passes through the cable guide tube 3 to connect to the anchor cup 5 of the inclined cable 4, thereby realizing the continuous traction of the ultra-long and ultra-heavy parallel steel wire inclined cable 4 over a long distance and with a large tonnage, and overcoming the problem of limited traction space of the inclined cable 4 at the anchor structure of the anchor plate 2 at the end of the beam, so that the parallel steel wire inclined cable 4 has less force conversion during the tension-compression combined traction construction process, low safety risk, and significantly improved traction efficiency. The steering system can adapt to the traction of the inclined cable 4 at different angles, thereby improving the traction efficiency and construction quality of the inclined cable 4.

[0048] In another technical solution, Figure 1 , Figure 2 , Figure 5As shown, the tensioning assembly includes a tensioning rod 15 and a jack 16. The jack 16 and the tensioning rod 15 are both arranged along the axial direction of the back-pressure support cylinder 11. The jack 16 is installed on the side of the reaction beam 10 facing the cable guide tube 3. One end of the tensioning rod 15 is connected to the corresponding end of the back-pressure beam 12, and the other end passes through the corresponding end of the reaction beam 10 and is connected to the pushing end of the jack 16 at the corresponding end.

[0049] By using the jack 16 to push toward one side of the cable guide tube 3, the tensioning rod 15 is tensioned, so that the entire counter-pressure beam 12 is subjected to a force toward the cable guide tube 3 and parallel to the axial direction of the cable guide tube 3 along with the connection end with the tensioning rod 15, so that the counter-pressure beam 12 drives the connected counter-pressure support tube 11 to push the anchor cup 5 toward the cable guide tube 3, and the tensioning rod 15 is connected to the corresponding ends of the reaction beam 10 and the counter-pressure beam 12. The tensioning rod 15 is a precision-rolled threaded steel bar, which symmetrically tensions the entire counter-pressure beam 12 without affecting the movement of the middle counter-pressure support tube 11 and the inclined cable 4. It is also easy to install, which is beneficial to saving construction space and improving construction efficiency.

[0050] In another technical solution, Figure 1-3 , Figure 5 As shown, the counter-pressure support cylinder 11 is composed of a pair of semicircular cylinder plates, both ends of which extend radially to form mounting portions 17, each mounting portion 17 is provided with bolt holes spaced axially, and the two opposite bolt holes of a pair of cylinder plates are connected by bolts.

[0051] Since the back-pressure support cylinder 11 needs to push the anchor cup 5 to move, the outer diameter of the back-pressure support cylinder 11 is smaller than that of the anchor cup 5. By setting the back-pressure support cylinder 11 as a structure that can be installed in combination, it is convenient to sleeve the back-pressure support cylinder 11 on the outside of the inclined cable 4, and the back-pressure support cylinder 11 can be installed after the anchor cup 5 partially enters the cable guide tube 3, which further facilitates the operation and makes the entire traction construction more flexible. The back-pressure beam 12 can also choose a similar assembled structure to facilitate installation and optimize the operating steps, so that the back-pressure system can be installed centrally and improve adaptability.

[0052] In another technical solution, Figure 4 As shown, the tractor 8 comprises:

[0053] A base frame 18, which is fixed to the top surface of the steel truss and has a transversely penetrating mounting slot 19;

[0054] A fixed holder 20, which is fixed to one end of the mounting groove 19;

[0055] A roller assembly 21, which is arranged at the other end of the mounting groove 19;

[0056] A movable clamp 22, which is disposed between the fixed clamp 20 and the roller assembly 21 and is slidably connected to the side wall of the mounting groove 19;

[0057] The push cylinder 23 is symmetrically arranged between the fixed clamp 20 and the movable clamp 22, and the push direction is consistent with the through direction of the installation slot 19. The cylinder body of each push cylinder 23 is fixed in the installation slot 19 on one side close to the fixed clamp 20, and the telescopic end is connected to the movable clamp 22;

[0058] The traction rope 9 passes through the roller group 21, the movable clamp 22, and the fixed clamp 20 in sequence along the through direction of the installation groove 19 and is connected to the anchor cup 5.

[0059] The entire tractor 8 is fixed to a suitable position on the top surface of the steel truss by the base frame 18, so that the traction rope 9 and the radial direction of the guide roller 7 are in the same vertical plane. The fixed clamp 20 and the movable clamp 22 both have the ability to clamp and release the part to be clamped, namely the traction rope 9. The specific working steps are: first, the fixed clamp 20 clamps the traction rope 9, and the movable clamp 22 does not clamp the traction rope 9. At this time, the pushing cylinder 23 is in an extended state, and then the telescopic end of the pushing cylinder 23 is driven to retract, so that the movable clamp 22 approaches the fixed clamp 20, and then the movable clamp 22 clamps the traction rope 9, and the fixed clamp 20 releases the traction rope 9, and the pushing cylinder 23 is started again to extend and push the movable clamp 22, so that the movable clamp 22 drives the traction rope 9 to move synchronously, and travels a pushing stroke of the pushing cylinder 23, and then the aforementioned steps are repeated to cycle the traction of the traction rope 9, thereby realizing the long-distance and large-tonnage continuous traction of the ultra-long and ultra-heavy parallel steel wire inclined cable 4.

[0060] In another technical solution, Figure 1-2 , Figure 6-7 As shown, the steering seat includes a base plate 24, which is fixed to the top surface 1 of the steel truss, and a pair of vertical plates 25 are relatively fixed on the base plate 24. A plurality of guide rollers 7 are arranged between the pair of vertical plates 25 and are rotatably connected to the pair of vertical plates 25 through bearings.

[0061] During construction, the bottom plate 24 is fixed to the top surface 1 of the steel truss, and a plurality of guide rollers 7 are installed between a pair of vertical plates 25, so that the radial directions of all guide rollers 7 and the axial directions of the cable guide tube 3 are located in the same vertical plane. A guide path for the traction rope 9 is formed by the set plurality of guide rollers 7 to guide the traction angle.

[0062] In another technical solution, Figure 6-7As shown, the guide rollers 7 are provided with a plurality of them, and the two ends of the axis of the guide rollers 7 are symmetrically connected to the bearings outwardly, and the outer side of each bearing is matched with a bearing seat 26, and each bearing seat 26 is provided with a first wing plate 27 and a second wing plate 28 radially outwardly, and all the first wing plates 27 are provided with a circular first hinge hole, and all the second wing plates 28 are provided with a circular second hinge hole, and the first hinge hole and the second hinge hole are located at the two ends of the same diameter of the corresponding bearing seat 26, and each first hinge hole on the adjacent side of the vertical plate 25 is provided with a first mounting hole, and the first mounting hole and the corresponding first hinge hole are respectively provided with a first mounting hole. The holes are hinged by inserting a first hinge rod 29 together. A second hinge hole on the adjacent side of the vertical plate 25 that is closest to the traction device 8 is provided with a second mounting hole, and other second hinge holes on the adjacent side are provided with an arc-shaped channel 31. The center of the channel 31 is located at the center of the first mounting hole of the corresponding bearing seat 26. A second hinge rod 30 is inserted into the second hinge hole. The outer end of the second hinge rod 30 extends into the corresponding second mounting hole or the channel 31. The channel 31 is slidably connected to the corresponding second hinge rod 30. Both ends of each second hinge rod 30 are threaded with fastening nuts.

[0063] The two ends of the guide roller 7 can rotate freely through the bearings and the bearing seats 26. Each guide roller 7 is installed between a pair of vertical plates 25 through the bearing seats 26 at both ends. When installing the bearing seat 26, a first hinge rod 29 is inserted into the corresponding first hinge hole and a first mounting hole to limit the first wing plate 27 of the bearing seat 26, and then a second hinge rod 30 is inserted into the second hinge hole on the second wing plate 28 and then into a channel 31 with the first mounting hole as the center. The second hinge rod 30 can move in the channel 31, so that the bearing seat 2 6 rotates around the first hinge rod 29, and the rotation radius of the bearing seat is the distance between the first hinge rod 29 and the second hinge rod 30. The bearing seats 26 at both ends of each guide roller 7 are adjusted synchronously. After the adjustment is completed, they are fastened by tightening nuts to fix the position of the bearing seats 26 and thus the position of the guide roller 7. Since the bearing seats 26 corresponding to all guide rollers 7 can change their positions along the corresponding channels 31, the positions of the corresponding guide rollers 7 can be changed. All guide rollers 7 cooperate to obtain traction paths in different angles and directions, which can adapt to the traction of the inclined cables 4 at different positions.

[0064] The present invention also provides a construction method for a parallel steel wire inclined cable tension and compression combined traction device, such as Figure 1-Figure 7 , the specific construction steps are as follows:

[0065] S1: When the winch pulls the inclined cable 4 into place, the traction device 8 and the steering device are installed at the position corresponding to the cable guide tube 3, and the traction rope 9 passes through the traction device 8, then passes around the guide roller 7 from the bottom of the guide roller 7, passes through the cable guide tube 3 upward, and is connected with the outer end of the anchor cup 5 of the inclined cable 4.

[0066] Specifically, the initial alignment of the inclined cable 4 is achieved by setting a guide rod 32, the upper end of the guide rod 32 is detachably connected to the outer end of the anchor cup 5, the outer diameter of the guide rod 32 is consistent with the inner diameter of the cable guide tube 3, the outer wall of the guide rod 32 is slidably connected to the inner wall of the cable guide tube 3, and the length of the guide rod 32 is greater than the length of the cable guide tube 3.

[0067] S2: The traction rope 9 is pulled by the traction device 8 to make the anchor cup 5 of the inclined cable 4 enter the cable guide tube 3, and then the back pressure system is installed.

[0068] Specifically, after one third of the length of the anchor cup 5 enters the cable guide tube 3, the back pressure system is installed.

[0069] S3: shorten the distance between the counter-pressure beam 12 and the reaction beam 10 through the tensioning assembly, so that the counter-pressure beam 12 drives the counter-pressure support tube 11 to counter-press the anchor cup 5 until the anchor cup 5 enters the anchoring position, and installs the anchor nut of the anchor cup 5;

[0070] S4: Adjust the position of the guide roller 7 on the steering system to adapt to the steering angle required by the traction rope 9 corresponding to the next inclined cable 4.

[0071] In this step, the position of the guide roller 7 on the steering system is adjusted by setting a positioning system on the bottom plate 24. The positioning system includes a pair of flat plates 33 corresponding to a pair of vertical plates 25. Each flat plate 33 is fixed on the outer side of the corresponding vertical plate 25, that is, the flat plate 33 and the bearing seat 26 are respectively located on different sides of the adjacent vertical plates 25. A sliding groove is provided on each flat plate 33 along the length direction of the vertical plate 25. A limiting groove 34 with an upward opening is provided in the sliding groove in sliding connection with each channel 31 on the adjacent side. Each limiting groove 34 is sleeved outside one of the second hinge rods 30 and the groove width is consistent with the diameter of the second hinge rod 30. A positioning cylinder 35 is provided corresponding to each limiting groove 34. The cylinder body of the positioning cylinder 35 is fixed on the flat plate 33, and the telescopic end is connected to the corresponding limiting groove 34. When adjusting the position of the guide roller 7, the positioning cylinder 35 is driven to telescopically move in the horizontal direction parallel to the slide groove to drive the limiting groove 34 to move, and the second hinged rod 30 moves with the corresponding limiting groove 34, thereby driving the corresponding bearing seat 26 to rotate, so as to adjust the position of the guide roller 7. When installing the positioning cylinder 35, the vertical offset distribution adjustment can be performed according to the position of the adjacent positioning cylinders 35 and the height of the limiting groove 34 to ensure that the telescopic paths of all the positioning cylinders 35 are not interfered.

[0072] Furthermore, the steering system is further provided with an operation terminal, a control chip, and a conversion module. The operation terminal is connected to the conversion module, and the conversion module and all the adjustment cylinders 35 are respectively connected to the control chip. The operation terminal is used to input the curvature radius of the required steering angle and transmit it to the conversion module. The conversion module is used to convert the input curvature radius into a horizontal displacement value and transmit it to the control chip. The control chip is used to control all the adjustment cylinders 35 to extend and retract according to the corresponding horizontal displacement value. When adjusting the position of the guide roller 7 on the steering system, the cylinder body of each adjustment cylinder 35 is first fixed according to the initial position of the guide roller 7 and then extended. The contracted end is connected to the limit groove 34, and the notch of each limit groove 34 is sleeved on the outside of the second articulated rod 30 in the corresponding channel 31, and then the extension and contraction amount of each positioning cylinder 35 is generated by inputting the curvature radius at the operating terminal, and the control chip controls the extension and contraction of the positioning cylinder 35, and controls the movement of the corresponding second articulated rod 30 through the limit groove 34, and the second articulated rod 30 rotates along the channel 31 around the corresponding first articulated rod 29, thereby changing the position of the corresponding guide roller 7, and then the second articulated rod 30 is tightened, thereby realizing automatic, fast and precise adjustment of the position of the guide roller 7.

[0073] S5: Repeat steps S1-S4 to complete the traction of all the stay cables 4.

[0074] To sum up, the parallel steel wire inclined cable tension-compression combined traction device and the construction method thereof of the present invention are provided with a traction device, a steering system and a back-pressure system, which overcomes the problem of limited traction space of the inclined cable at the anchor plate anchoring structure of the beam end, and realizes long-distance and large-tonnage continuous traction of ultra-long and ultra-heavy parallel steel wire inclined cables, filling the gap in this technology. The parallel steel wire inclined cable tension-compression combined traction device and the construction method thereof of the present invention have less force conversion during the construction process, low safety risk, and significantly improved traction efficiency, and can adapt to the traction of inclined cables at different angles, ensure traction alignment accuracy, and improve construction quality.

[0075] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A parallel steel wire inclined cable tension and compression combined traction device is installed on the top surface of the steel truss beam. An anchor plate is fixed on the top surface of the steel truss beam. A cable guide tube is fixed on the upper end of the anchor plate. An anchor cup is provided at the end of the inclined cable to be pulled. The device is characterized in that: include: The steering system includes a steering seat fixed on the top surface of the steel truss beam, a guide roller is installed on the steering seat, and the axial direction of the guide roller is horizontally arranged and perpendicular to the traction direction of the inclined cable; A traction device, wherein a traction rope is passed through the interior thereof, and one end of the traction rope passes through the traction device, passes around the guide roller from below, passes upward through the cable guide tube, and is connected to the outer end of the anchor cup of the inclined cable; A counter-pressure system, comprising a reaction beam fixed to the upper end of an anchor plate, a counter-pressure support tube and a counter-pressure beam being arranged upward in sequence above the reaction beam, a first through hole being arranged in the middle of the reaction beam, a second through hole being arranged in the middle of the counter-pressure beam, the end of the inclined cable to be pulled passes through the first through hole and the counter-pressure support tube in sequence, the upper end of the counter-pressure support tube is fixed to the counter-pressure beam, and the lower end contacts the upper end of the anchor cup, the first through hole, the second through hole, the counter-pressure support tube, and the cable guide tube are coaxially arranged, and the outer diameter of the counter-pressure support tube is larger than the second through hole, the counter-pressure support tube and the anchor cup can both pass through the first through hole, and tensioning components are respectively connected between the left and right ends of the reaction beam and the corresponding ends of the counter-pressure beam; The steering seat comprises a bottom plate, which is fixed to the top surface of the steel truss, a pair of vertical plates are relatively fixed to the bottom plate, and a plurality of guide rollers are arranged between the pair of vertical plates and are rotatably connected to the pair of vertical plates through bearings respectively; The guide rollers are provided with a plurality of bearings, and the two ends of the axis of the guide rollers are symmetrically connected outwardly with the bearings, and the outer side of each bearing is matched with a bearing seat, and each bearing seat is provided with a first wing plate and a second wing plate radially outwardly, and all the first wing plates are provided with a circular first hinge hole, and all the second wing plates are provided with a circular second hinge hole, and the first hinge hole and the second hinge hole are located at the two ends of the same diameter of the corresponding bearing seat, and each first hinge hole on the corresponding adjacent side of the vertical plate is provided with a first mounting hole, and the first mounting hole and the corresponding first hinge hole are respectively provided with a first mounting hole. The connecting holes are hinged by inserting a first hinge rod into them. A second hinge hole on the adjacent side of the vertical plate closest to the traction device is provided with a second mounting hole, and other second hinge holes on the adjacent side are provided with an arc-shaped channel, the center of the channel is located at the center of the first mounting hole of the corresponding bearing seat, a second hinge rod is inserted into the second hinge hole, and the outer end of the second hinge rod extends into the corresponding second mounting hole or the channel, the channel is slidably connected to the corresponding second hinge rod, and both ends of each second hinge rod are threaded with fastening nuts.

2. The parallel steel wire inclined cable tension and compression combined traction device according to claim 1, characterized in that: The tensioning assembly includes a tensioning rod and a jack. The jack and the tensioning rod are both arranged along the axial direction of the back-pressure support cylinder. The jack is installed on the side of the reaction beam facing the cable guide tube. One end of the tensioning rod is connected to the corresponding end of the back-pressure beam, and the other end passes through the corresponding end of the reaction beam and is connected to the pushing end of the jack at the corresponding end.

3. The parallel steel wire inclined cable tension and compression combined traction device according to claim 1, characterized in that: The counter-pressure support cylinder is composed of a pair of semicircular cylinder pieces, both ends of which extend radially to form mounting parts, each mounting part is provided with bolt holes spaced axially, and the two opposite bolt holes of a pair of cylinder pieces are connected by bolts.

4. The parallel steel wire inclined cable tension and compression combined traction device according to claim 1, characterized in that: The tractor comprises: A base frame, which is fixed to the top surface of the steel truss and has a transversely penetrating mounting groove; A fixed holder fixed to one end of the mounting slot; A roller group is arranged at the other end of the mounting groove; A movable clamper is arranged between the fixed clamper and the roller assembly and is slidably connected to the side wall of the mounting groove; The push cylinder is symmetrically arranged between the fixed clamp and the movable clamp, and the push direction is consistent with the through direction of the installation slot. The cylinder body of each push cylinder is fixed on one side of the installation slot close to the fixed clamp, and the telescopic end is connected to the movable clamp; The traction rope passes through the roller group, the movable clamp and the fixed clamp in sequence along the through direction of the installation groove and is connected with the anchor cup.

5. The construction method of the parallel steel wire inclined cable tension and compression combined traction device according to any one of claims 1 to 4, characterized in that: The specific construction steps are as follows: S1: When the winch pulls the inclined cable into place, install the traction device and the steering device at the position of the cable guide tube, pass the traction rope through the traction device, then pass around the guide roller from the bottom of the guide roller, pass through the cable guide tube upwards and connect with the outer end of the anchor cup of the inclined cable; S2: Pull the traction rope through the traction device to make the anchor cup of the inclined cable enter the cable guide tube, and then install the back pressure system; S3: shorten the distance between the counter-pressure beam and the reaction beam through the tensioning assembly, so that the counter-pressure beam drives the counter-pressure support tube to counter-press the anchor cup until the anchor cup enters the anchoring position, and installs the anchor cup anchor nut; S4: Adjust the position of the guide roller on the steering system to adapt to the steering angle required by the traction rope corresponding to the next inclined cable; S5: Repeat steps S1-S4 to complete the traction of all the inclined cables.

6. The construction method of the parallel steel wire inclined cable tension and compression combined traction device according to claim 5, characterized in that: In step S1, preliminary alignment of the inclined cable is achieved by setting a guide rod, the upper end of the guide rod is detachably connected to the outer end of the anchor cup, the outer diameter of the guide rod is consistent with the inner diameter of the cable guide tube, the outer wall of the guide rod is slidably connected to the inner wall of the cable guide tube, and the length of the guide rod is greater than the length of the cable guide tube.

7. The construction method of the parallel steel wire inclined cable tension and compression combined traction device according to claim 5, characterized in that: In step S4, the position of the guide roller on the steering system is adjusted by setting a positioning system on the base plate, the positioning system includes a pair of flat plates arranged corresponding to a pair of vertical plates, each flat plate is fixed on the outer side of the corresponding vertical plate, a slide groove is provided on each flat plate along the length direction of the vertical plate, and each channel sliding connection corresponding to the adjacent side in the slide groove is provided with a limit groove with an opening facing upward, each limit groove is sleeved outside a second hinge rod and the groove width is consistent with the diameter of the second hinge rod, and a positioning cylinder is provided on the flat plate corresponding to each limit groove, the cylinder body of the positioning cylinder is fixed on the flat plate, and the telescopic end is connected to the corresponding limit groove. When adjusting the position of the guide roller, the positioning cylinder is driven to telescopically move in a horizontal direction parallel to the slide groove to drive the limit groove to move, and the second hinge rod follows the movement of the corresponding limit groove, thereby driving the corresponding bearing seat to rotate, thereby adjusting the position of the guide roller.

8. The construction method of the parallel steel wire inclined cable tension and compression combined traction device according to claim 7, characterized in that: An operation terminal, a control chip, and a conversion module are also provided outside the steering system. The operation terminal is connected to the conversion module. The conversion module and all the adjustment cylinders are connected to the control chip respectively. The operation terminal is used to input the curvature radius of the required steering angle and transmit it to the conversion module. The conversion module is used to convert the input curvature radius into a horizontal displacement value and transmit it to the control chip. The control chip is used to control all the adjustment cylinders to expand and contract according to the corresponding horizontal displacement value. When adjusting the position of the guide roller on the steering system, the cylinder body of each adjustment cylinder is first fixed according to the initial position of the guide roller and the limiting groove is connected to the telescopic end, and the notch of each limiting groove is sleeved outside the second articulated rod in the corresponding channel. Then, the extension amount of each adjustment cylinder is generated by inputting the curvature radius in the operation terminal. The control chip controls the expansion and contraction of the adjustment cylinder, and controls the corresponding second articulated rod to move through the limiting groove. The second articulated rod rotates around the corresponding first articulated rod along the channel, thereby changing the position of the corresponding guide roller, and then the second articulated rod is tightened.

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