Cable saddle anti-sliding structure with movable adjusting function

Abstract

A cable saddle anti-sliding structure with a movable adjusting function comprises a bunching cable saddle (1) and is characterized in that a first anti-sliding pressing plate (4) is arranged at one end of the bunching cable saddle (1), a second anti-sliding pressing plate (5) is arranged at the other end of the bunching cable saddle (1), counter bores (6) are formed in the anti-sliding pressing plates corresponding to steel strand penetrating holes of the bunching cable saddle (1) respectively, and the counter bores (6) are connected with the first anti-sliding pressing plate (4) and the second anti-sliding pressing plate (5). The counter bores (6) on the first anti-sliding pressing plate (4) and the second anti-sliding pressing plate (5) are internally provided with spherical cylinders (7) respectively, the outer side of the spherical cylinder (7) on the first anti-sliding pressing plate (4) is provided with a fixer (10), and the outer side of the spherical cylinder (7) on the second anti-sliding pressing plate (5) is provided with a movable regulator (13). And stress concentration can be effectively avoided, single cable replacement can be achieved, and the safety and reliability of the structure are improved.

Description

Technical Field

[0001] This application relates to a cable saddle anti-slip structure, and more particularly to a cable saddle anti-slip structure with an adjustable function, belonging to the field of bridge engineering technology. Background Technology

[0002] Cable saddles are key components of long-span bridges such as suspension bridges and cable-stayed bridges. Their main function is to change the direction of the main cable or stay cable and transfer the cable force to the bridge towers and other structures. Throughout the bridge's lifespan, the cable saddle must maintain a reliable connection with the main cable or stay cable to prevent relative slippage. Once slippage occurs, it will change the stress distribution of the bridge structure and, in severe cases, endanger the safety of the bridge.

[0003] Existing cable saddle anti-slip structures have some shortcomings. For example, utility model patent CN216074743U discloses a stepped anti-slip pad and a cable saddle for stay cables. Its main feature is the installation of a stepped anti-slip pad that mates with the end of a wire-splitting saddle. It is secured to the prestressing tendons by two externally threaded anti-slip keys and a threaded cylinder, which are then clamped to the outer end of the stepped anti-slip pad's channels. This ensures that each row of prestressing tendons with double anti-slip keys is evenly spaced, avoiding installation errors caused by too many cable specifications. However, this structure has a large stepped pad size and volume, resulting in high processing costs, difficult installation, and poor economic efficiency. More importantly, the threads on the anti-slip keys inevitably lead to angular misalignment during steel strand installation, generating bending moments under stress and potentially causing stress concentration, which can easily lead to structural failure. It also hinders individual cable replacement. Long-term use can result in loosening and damage, reducing the reliability and safety of the entire cable saddle system. In summary, existing cable saddle anti-slip structures have certain defects, and there is an urgent need for a new type of cable saddle anti-slip structure to overcome the above problems and meet the growing safety and performance requirements of modern bridge engineering. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings and deficiencies of traditional cable saddle anti-slip structures, which inevitably have angular deviations when fixing the main cable or cable, resulting in bending moments under stress and potentially stress concentration, which can easily lead to structural failure. This application provides a cable saddle anti-slip structure with a reasonable structure, easy installation and replacement, which can effectively eliminate bending moments, avoid stress concentration, and allows for single cable replacement, thereby improving the safety and reliability of the structure.

[0005] To achieve the objectives of the above application, the technical solution of this application is: a cable saddle anti-slip structure with adjustable function, comprising a bundled cable saddle, the bundled cable saddle being fixed on the cable tower, steel strands being inserted into the bundled cable saddle, a first anti-slip pressure plate being provided at one end of the bundled cable saddle, and a second anti-slip pressure plate being provided at the other end of the bundled cable saddle, with countersunk holes respectively provided on the anti-slip pressure plates corresponding to the steel strand insertion holes of the bundled cable saddle, spherical cylinders being installed in the countersunk holes on the first and second anti-slip pressure plates, a fixing device being installed on the outside of the spherical cylinder on the first anti-slip pressure plate, a first anti-slip key being installed on the outside of the fixing device, and an adjustable device being installed on the outside of the spherical cylinder on the second anti-slip pressure plate, with a second anti-slip key being installed on the outside of the adjustable device.

[0006] Furthermore, the bundled cable saddle is composed of multiple arc-shaped steel pipes arranged and welded together according to a certain pattern, and anchor plates are welded and fixed at both ends of the arc-shaped steel pipes.

[0007] Furthermore, the first or second anti-slip pressure plate adopts an integral structure, or is composed of two or more pieces spliced ​​together.

[0008] Furthermore, the spherical cylinder has a through hole at its center, which corresponds to the countersunk hole, and the exposed end of the spherical cylinder is a concave spherical surface.

[0009] Furthermore, the retainer is a multi-lobed nut or a columnar structure with a central hole, and one end of the retainer is set as a spherical arc surface that matches the spherical surface. The spherical cylinder and the retainer form a spherical pair that can rotate within a certain angle range.

[0010] Furthermore, the first anti-slip key and the second anti-slip key are respectively anchored to the steel strand.

[0011] Furthermore, the movable adjuster includes a threaded cylinder and a spherical nut. The threaded cylinder is a cylindrical structure with threads on its outer circumference. A through hole is opened on the axis of the threaded cylinder, and a spherical nut is installed on the external thread. The end of the spherical nut that interacts with the spherical cylinder is set as a spherical arc surface. The spherical nut and the retainer form a spherical pair that can rotate within a certain angle range.

[0012] Furthermore, the lengths of the movable adjusters are not uniform, and the length difference between two adjacent movable adjusters is the length difference of the corresponding arc-shaped steel pipe.

[0013] Furthermore, the outer diameter of the spherical nut is larger than the inner diameter of the spherical cylinder and the outer diameter of the anti-slip key.

[0014] The beneficial effects of this application are:

[0015] 1. In this application, the steel strand anchor cable on one side of the bundled cable saddle is anchored by a spherical cylinder, a fixing device and a first anti-slip key, and the steel strand anchor cable on the other side of the bundled cable saddle is anchored by a spherical cylinder, a movable adjuster and a second anti-slip key. The spherical pair can adapt to angle changes, can effectively eliminate bending moment and can effectively avoid stress concentration.

[0016] 2. The movable adjusters of this application are made in different lengths. When the movable adjusters are made in different lengths, the differences can be visually distinguished, ensuring that there will be no errors during on-site installation. Moreover, it is beneficial to the locking and anchoring of the steel strand anchor cable, achieving a very good use effect.

[0017] 3. This application has a reasonable structure, excellent anti-slip performance, facilitates high-altitude installation operations, enables single cable replacement, and can compensate for the length difference between the arc steel pipes of the cable saddle through the movable adjuster, thereby improving the safety and reliability of the structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this application.

[0019] Figure 2 yes Figure 1 A magnified view of the area on the left.

[0020] Figure 3 yes Figure 1 A magnified view on the right.

[0021] Figure 4 This is a schematic diagram of the specific structure of the activity regulator in this application.

[0022] Figure 5 This is a partial structural schematic diagram of the steel strand anchor cable anchorage of this application.

[0023] Figure 6 This is a schematic diagram of the front structure of the anti-slip pressure plate of this application.

[0024] Figure 7 yes Figure 6 Side sectional view.

[0025] Figure 8 This is a cross-sectional view of the spherical cylinder of this application.

[0026] Figure 9 This is a schematic diagram of the spherical cylinder structure of this application.

[0027] Figure 10 This is a structural schematic diagram of a specific embodiment of the fixator of this application.

[0028] Figure 11 This is a schematic diagram of another specific embodiment of the fixation device of this application.

[0029] Figure 12 This is a cross-sectional view of the fixator in this application.

[0030] In the diagram: 1. Cable saddle, 2. Cable tower, 3. Steel strand, 4. First anti-slip pressure plate, 5. Second anti-slip pressure plate, 6. Countersunk hole, 7. Spherical cylinder, 8. Through hole, 9. Spherical surface, 10. Fixer, 11. First anti-slip key, 12. Second anti-slip key, 13. Adjuster, 14. Threaded cylinder, 15. Spherical nut, 16. Spherical end face. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1 to 12 This application discloses a cable saddle anti-slip structure with adjustable function, comprising a bundled cable saddle 1 fixed on a cable tower 2, wherein a steel strand 3 is inserted into the bundled cable saddle 1. The structure is characterized in that: a first anti-slip pressure plate 4 is provided at one end of the bundled cable saddle 1, and a second anti-slip pressure plate 5 is provided at the other end of the bundled cable saddle 1. The anti-slip pressure plates have countersunk holes 6 corresponding to the steel strand insertion holes of the bundled cable saddle 1. Spherical cylinders 7 are installed in the countersunk holes 6 on the first and second anti-slip pressure plates 4 and 5, respectively. A fixing device 10 is installed on the outside of the spherical cylinder 7 on the first anti-slip pressure plate 4, and a first anti-slip key 11 is installed on the outside of the fixing device 10. An adjustable device 13 is installed on the outside of the spherical cylinder 7 on the second anti-slip pressure plate 5, and a second anti-slip key 12 is installed on the outside of the adjustable device 13.

[0033] The bundled cable saddle 1 is made of multiple arc-shaped steel pipes arranged and welded together according to a certain pattern, and anchor plates are welded and fixed at both ends of the arc-shaped steel pipes.

[0034] The first anti-slip pressure plate 4 or the second anti-slip pressure plate 5 adopts an integral structure, or is composed of two or more pieces spliced ​​together.

[0035] The spherical cylinder 7 has a through hole 8 at its center, which corresponds to the countersunk hole 6. The exposed end of the spherical cylinder 7 is a concave spherical surface 9.

[0036] The retainer 10 is a multi-lobed nut or a columnar structure with a central hole. One end of the retainer 10 is set as a ball-head arc surface that matches the spherical surface 9. The spherical cylinder 7 and the retainer 10 form a spherical pair that can rotate within a certain angle range.

[0037] The first anti-slip key 11 and the second anti-slip key 12 are respectively anchored on the steel strand 3.

[0038] The movable adjuster 13 includes a threaded cylinder 14 and a spherical nut 15. The threaded cylinder 14 is a cylindrical structure with threads on its outer circumference. A through hole is opened on the axis of the threaded cylinder 14, and a spherical nut 15 is installed on the external thread. The end of the spherical nut 15 that interacts with the spherical cylinder 7 is set as a spherical arc surface. The spherical nut 15 and the retainer 10 form a spherical pair that can rotate within a certain angle range.

[0039] The lengths of the movable adjusters 13 are not the same, and the length difference between two adjacent movable adjusters 13 is the length difference of the corresponding arc-shaped steel pipe.

[0040] The outer diameter of the spherical nut 15 is larger than the inner diameter of the spherical cylinder 7 and the outer diameter of the anti-slip key.

[0041] Referring to the accompanying drawings, the bundled cable saddle of this application is pre-embedded on the cable tower and becomes an integral part of the tower. The steel strand anchor cable mainly consists of steel strands 3. The steel strand anchor cable needs to be inserted into the bundled cable saddle 1 and anchored. After the steel strands 3 are inserted into the bundled cable saddle 1, the steel strand anchor cable at one end of the bundled cable saddle 1 is locked and anchored by the spherical cylinder 7, the fixing device 10, and the first anti-slip key 11. The steel strand anchor cable at the other end of the bundled cable saddle 1 is locked and anchored by the spherical cylinder 7, the movable adjuster 13, and the second anti-slip key 12. The movable adjuster 13 realizes the compensation for the length difference between the arc steel pipes of the cable saddle. The spherical pair can eliminate the adverse effects of bending moment and stress concentration on the anti-slip key anchoring structure, thereby improving the safety and reliability of the structure. The specific structure and principle are as follows:

[0042] The bundled cable saddle 1 is composed of multiple arc-shaped steel pipes arranged and welded together according to a certain pattern. Each steel pipe is used to insert steel strand anchor cables, and anchor plates are welded and fixed at both ends of the arc-shaped steel pipes. The anchor plates have through holes corresponding to the holes in the steel pipes. One end of the bundled cable saddle 1 is provided with a first anti-slip pressure plate 4, and the other end of the bundled cable saddle 1 is provided with a second anti-slip pressure plate 5. The first anti-slip pressure plate 4 and the second anti-slip pressure plate 5 are respectively provided with countersunk holes 6, and each countersunk hole 6 corresponds to the steel strand anchor cable insertion hole of the bundled cable saddle 1.

[0043] The countersunk hole 6 is provided with a stepped hole to facilitate the installation of anchors. At the end of the countersunk hole 6 near the bundle saddle 1, a slightly larger diameter conical hole is provided to improve the stress distribution on the steel strand anchor cable at that location, prevent stress concentration, and facilitate smoother cable threading. The first anti-slip pressure plate 4 or the second anti-slip pressure plate 5 can be an integral structure, or a combined structure composed of two or more plates, facilitating on-site installation while ensuring structural strength and functionality.

[0044] A spherical cylinder 7 is installed in the countersunk hole 6 on the first anti-slip pressure plate 4. The spherical cylinder 7 is embedded in the stepped hole of the countersunk hole 6, or is installed in the countersunk hole 6 by a threaded connection. A through hole 8 is provided in the center of the spherical cylinder 7, which corresponds to the countersunk hole 6. The anti-slip component on the steel strand anchor cable can pass through the through hole 8. The exposed end of the spherical cylinder 7 is set as a concave spherical surface 9. A fixing device 10 is installed on the outside of the spherical cylinder 7 on the first anti-slip pressure plate 4. The fixing device 10 is a nut with two or more lobes or a columnar structure with a central hole. See Appendix. Figure 10 , 11 One end of the fixture 10 is configured as a spherical arc surface that mates with the spherical surface 9. The spherical cylinder 7 and the fixture 10 form a spherical pair that can rotate within a certain angle range, which can adapt to angle changes. The spherical pair formed by the spherical cylinder 7 and the fixture 10 can effectively eliminate bending moment and avoid stress concentration.

[0045] A spherical cylinder 7 is also installed in the countersunk hole 6 on the second anti-slip pressure plate 5, and its installation method is the same as that of the spherical cylinder 7 on the first anti-slip pressure plate 4. A movable adjuster 13 is installed on the outside of the spherical cylinder 7 on the second anti-slip pressure plate 5. The movable adjuster 13 has various structural forms. Taking the threaded cylinder structure as an example, the movable adjuster 13 mainly includes a threaded cylinder 14 and a spherical nut 15. The threaded cylinder 14 is a cylindrical structure with threads on its outer circumference. A through hole is opened on the axis of the threaded cylinder 14, and a spherical nut 15 is installed on the external thread. The outer diameter of the spherical nut 15 is larger than the inner diameter of the spherical cylinder 7 and the outer diameter of the anti-slip key. The position of the spherical nut 15 can be adjusted according to the actual installation needs, and it has good adjustability. The end of the spherical nut 15 that interacts with the spherical cylinder 7 is set as a spherical arc surface. The spherical nut 15 and the fixing device 10 form a spherical pair that can rotate within a certain angle range. This spherical pair can also adapt to angle changes, and its function is the same as that described above.

[0046] A first anti-slip key 11 is installed on the outer side of the anchor 10. The first anti-slip key 11 is anchored to the outer surface of the steel strand 3 and is fixed integrally with the steel strand 3. The end of the first anti-slip key 11 abuts against the anchor 10. A second anti-slip key 12 is installed on the outer side of the movable adjuster 13. The second anti-slip key 12 is also anchored to the outer surface of the steel strand 3 and cooperates with the movable adjuster 13. The first anti-slip key 11 and the second anti-slip key 12 achieve bidirectional anti-slip anchoring of the steel strand anchor cable.

[0047] In addition, the movable adjusters 13 used in this application are made in varying lengths. Due to the difference in the arc length of the arc-shaped steel pipe on the saddle, the lengths of the steel strand anchors between the first anti-slip key 11 and the second anti-slip key 12 on different steel strand anchors are different. The movable adjusters 13 are used for length compensation. The length difference between two adjacent movable adjusters 13 is the length difference of the corresponding arc-shaped steel pipe. Making the movable adjusters in varying lengths not only allows for visual differentiation of the differences, ensuring no errors during on-site installation, but also facilitates the locking and anchoring of the steel strand anchors, achieving excellent performance.

[0048] The installation and use process of this application is as follows: First, the first anti-slip key 11, the movable adjuster 13, and the second anti-slip key 12 are sequentially passed through the steel strand, and the first anti-slip key 11 and the second anti-slip key 12 are anchored to the steel strand using a special process, thus completing the fabrication of the steel strand anchor cable. The steel strand anchor cable is passed from one end of the bundled cable saddle 1 to the other end. Specifically, the steel strand anchor cable with the anti-slip key passes sequentially from the side of the first anti-slip key 11 through the second anti-slip pressure plate 5, the spherical cylinder 7, the arc-shaped steel pipe of the bundled cable saddle 1, the first anti-slip pressure plate 4, and the spherical cylinder 7. Then, the fixing device 10 is installed, completing the assembly of the spherical cylinder 7, the fixing device 10, and the first anti-slip key 11 on the side of the first anti-slip pressure plate 4. At the same time, the assembly of the spherical cylinder 7, the movable adjuster 13, and the second anti-slip key 12 on the side of the second anti-slip pressure plate 5 is also completed. Finally, the steel strand anchor cable is tensioned on one side of the second anti-slip pressure plate 5 using a tensioning device. After reaching the set force value, the ball nut 15 on the movable adjuster 13 is adjusted to make the outer side of the threaded cylinder 14 press against the second anti-slip key 12. Then, the ball nut 15 is locked, and the tensioning device is removed after completion, thus realizing the anchoring operation of the steel strand anchor cable. This application can realize single cable replacement, and the cable replacement is performed in reverse order of the above installation sequence.

[0049] The steel strand anchor cable is inserted from one end of the bundled cable saddle 1 to the other. After insertion, the first anti-slip pressure plate 4, the spherical cylinder 7, and the fixing device 10 are sequentially inserted into one end of the steel strand anchor cable, completing the assembly of the spherical cylinder 7, the fixing device 10, and the first anti-slip key 11. Subsequently, the second anti-slip pressure plate 5, the spherical cylinder 7, and the movable adjuster 13 are sequentially inserted into the other side of the bundled cable saddle 1, completing the assembly of the spherical cylinder 7, the movable adjuster 13, and the second anti-slip key 12. Then, the steel strand anchor cable is tensioned on one side of the second anti-slip pressure plate 5 using a tensioning device. After reaching the set force value, the movable adjuster 13 and the second anti-slip key 12 are adjusted. After completion, the tensioning device is removed, realizing the anchoring operation of the steel strand anchor cable. This application can realize single cable replacement, and the cable replacement operation is reversed from the above installation sequence.

[0050] The above description, in conjunction with specific embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. For those skilled in the art, various simple substitutions, improvements, and variations can be made to this application without departing from its concept, and all such simple substitutions, improvements, and variations should be considered within the scope of protection of this application.

Claims

1. A cable saddle anti-slip structure with adjustable function, comprising a bundled cable saddle (1), the bundled cable saddle (1) being fixed on a cable tower (2), and steel strands (3) being inserted into the bundled cable saddle (1), characterized in that: One end of the bundled cable saddle (1) is provided with a first anti-slip pressure plate (4), and the other end of the bundled cable saddle (1) is provided with a second anti-slip pressure plate (5). The anti-slip pressure plates are respectively provided with countersunk holes (6) corresponding to the steel strand insertion holes of the bundled cable saddle (1). Spherical cylinders (7) are respectively installed in the countersunk holes (6) on the first anti-slip pressure plate (4) and the second anti-slip pressure plate (5). A fixing device (10) is installed on the outside of the spherical cylinder (7) on the first anti-slip pressure plate (4). A first anti-slip key (11) is installed on the outside of the fixing device (10). An adjustment device (13) is installed on the outside of the spherical cylinder (7) on the second anti-slip pressure plate (5). A second anti-slip key (12) is installed on the outside of the adjustment device (13).

2. The cable saddle anti-slip structure with adjustable function according to claim 1, characterized in that: The bundled cable saddle (1) is made of multiple arc-shaped steel pipes arranged and welded together according to a certain pattern, and anchor plates are welded and fixed at both ends of the arc-shaped steel pipes.

3. The cable saddle anti-slip structure with adjustable function according to claim 1, characterized in that: The first anti-slip pressure plate (4) or the second anti-slip pressure plate (5) adopts an integral structure, or is composed of two or more pieces spliced ​​together.

4. The cable saddle anti-slip structure with adjustable function according to claim 1, characterized in that: The spherical cylinder (7) has a through hole (8) at its center, which is corresponding to the countersunk hole (6). The exposed end of the spherical cylinder (7) is a concave spherical surface (9).

5. The cable saddle anti-slip structure with adjustable function according to claim 1, characterized in that: The fixing device (10) is a nut or a columnar structure with a central hole. One end of the fixing device (10) is set as a ball head arc surface that matches the spherical surface (9). The spherical cylinder (7) and the fixing device (10) form a spherical pair that can rotate within a certain angle range.

6. The cable saddle anti-slip structure with adjustable function according to claim 1, characterized in that: The first anti-slip key (11) and the second anti-slip key (12) are respectively anchored on the steel strand (3).

7. The cable saddle anti-slip structure with adjustable function according to claim 1, characterized in that: The movable adjuster (13) includes a threaded cylinder (14) and a spherical nut (15). The threaded cylinder (14) is a cylindrical structure with threads on its outer circumference. A through hole is opened on the axis of the threaded cylinder (14), and a spherical nut (15) is installed on the external thread. The end of the spherical nut (15) that interacts with the spherical cylinder (7) is set as a spherical arc surface. The spherical nut (15) and the fixing device (10) form a spherical pair that can rotate within a certain angle range.

8. The cable saddle anti-slip structure with adjustable function according to claim 1, characterized in that: The lengths of the movable regulators (13) are not the same, and the length difference between two adjacent movable regulators (13) is the length difference of the corresponding arc-shaped steel pipe.

9. A cable saddle anti-slip structure with adjustable function according to claim 7, characterized in that: The outer diameter of the spherical nut (15) is larger than the inner diameter of the spherical cylinder (7) and the outer diameter of the anti-slip key.

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