Stepped cable saddle anti-sliding mat plate

Abstract

The utility model relates to a kind of ladder type cable saddle anti-sliding pad plate, including base and the N layer platform of being sequentially reduced from below to above area being set on base, the end face of the 1st platform to the N-1 layer platform forms N-1 layer outer periphery step surface, top platform, outer periphery step surface and the base on platform outside are opened with the installation hole corresponding to the quantity of steel strand to be installed, N is 2~20.The center line of installation hole on base, the center line of installation hole on each layer outer periphery step surface is regular hexagon.The pad plate has multilayer step structure, can install adjustment component on different height step surface, makes adjustment component staggered in space, both can prevent adjustment component at the same plane due to the larger shape size interference;And installation hole is divided into multiple layers from outside to inside according to radial, each layer installation hole encloses a regular hexagon, when installing, staff can carry out installation operation in six directions simultaneously, both facilitate installation adjustment, can improve work efficiency.

Description

Technical Field

[0001] This utility model relates to a pad structure for anchoring cable saddles of cable-stayed bridges, and particularly to a stepped anti-slip pad for cable saddles. Background Technology

[0002] When installing anti-slip prestressed steel strands, the anti-slip saddle relies on the anti-slip pads at both ends of the saddle to limit and anchor the anti-slip key, thereby achieving the function of anchoring the prestressed tendons. The anti-slip key is integrally compressed onto the prestressed steel strand, relying on integral compression deformation to grip and anchor the steel strand passing through the inner hole of the anti-slip key. This anchoring method is a relatively convenient permanent anchoring method, with advantages such as simple structure, small size, and reliable anchoring performance. Anti-slip keys are generally pre-compressed and anchored to the prestressed steel strands in the factory according to the dimensions measured at the construction site or the installation dimensions provided by the design engineer, and then transported to the site for installation. There are two ways to connect the anti-slip key to the anti-slip pad of the saddle: one is to have threads on both the anti-slip key and the anti-slip pad, connecting and anchoring them through the threads; the other is to adjust the anchoring distance between the two anti-slip keys using threads or other means, locking the anti-slip pad between the two anti-slip keys to achieve anchoring of the anti-slip key and the prestressed steel strand. These two methods dictate that anti-slip keys require torsional adjustment during installation, either on the anti-slip key itself or on adjustable components such as the adjustable nut mounted on it. Traditional anchor plates have a flat end face; when tortuously adjusting the anti-slip key or its nut, space is limited because the components to be adjusted are on the same plane, making installation difficult. Furthermore, large components on the same plane may interfere with each other, preventing installation.

[0003] Chinese patent 2021111754765 discloses a stepped anti-slip pad, which includes multiple steps. Its main function is to compensate for the length difference between adjacent strand layers, ensuring that the length of each prestressed tendon duct is the same. This aims to solve the problems of inconsistent anti-slip key spacing at both ends of each steel strand caused by existing anti-slip structures, requiring different customizations and leading to confusion and errors during construction. While this pad's structure allows adjustment components to be on different planes, avoiding interference between components on the same plane, it was not specifically developed to solve this problem. Its structure is not optimal for addressing interference issues with adjustment components. Therefore, a more rationally designed cable saddle anti-slip pad specifically designed to solve the problem of mutual interference caused by adjustment components being on the same plane needs to be developed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a stepped cable saddle anti-slip pad. The pad has a multi-layer stepped structure, which can install the adjustment components on the stepped surfaces at different heights, so that the adjustment components are staggered in space. This can not only prevent the adjustment components from interfering with each other due to their large size on the same plane, but also make adjustment and installation more convenient.

[0005] The technical solution to the above technical problem is: a stepped cable saddle anti-slip pad, including a base and N layers of platforms with decreasing areas from bottom to top on the base. The end faces of the first platform to the (N-1)th platform form the outer peripheral step surface of the (N-1)th platform. The top platform, the outer peripheral step surface and the base outside the platform have mounting holes corresponding to the number of steel strands to be installed, where N is 2 to 20.

[0006] Furthermore, the center lines connecting the mounting holes on the base and the center lines connecting the mounting holes on the outermost step surface of each layer are all regular hexagons.

[0007] Furthermore, the base has a circular cross-sectional shape, and the platform has a regular hexagonal cross-sectional shape.

[0008] Furthermore, the base and the Nth platform have circular cross-sectional shapes, while the remaining platforms have regular hexagonal cross-sectional shapes.

[0009] Furthermore, the outer surfaces of the first to N-1th platform layers have anti-interference arc-shaped grooves corresponding to the positions of the mounting holes.

[0010] Furthermore, the end of the mounting hole is provided with an internal thread.

[0011] By adopting the above technical solution, this utility model has the following beneficial effects:

[0012] 1. The mounting holes for installing steel strands are divided into multiple layers radially from the outside to the inside. The outermost layer of mounting holes is evenly distributed on the base outside the platform. The second layer of mounting holes is evenly distributed on the outer edge of the first layer. The third layer of mounting holes is evenly distributed on the outer edge of the second layer. The mounting holes are arranged in this manner. The innermost layer of mounting holes is opened on the top platform. When anchoring the cable saddle, the adjustment components of adjacent layers can be installed on planes at different heights. That is, the adjustment components of different layers are on different planes, so that the adjustment components are staggered in space. This can prevent the adjustment components from interfering with each other due to their large size when they are on the same plane.

[0013] 2. Compared with the above-mentioned stepped anti-slip pad, the mounting holes of this utility model are divided into multiple layers radially from the outside to the inside. The mounting holes correspond to the steel strands, that is, each layer of mounting holes forms a regular hexagon. When installing the steel strands, the workers can perform installation operations in six directions at the same time, which is convenient for installation and adjustment and can improve the efficiency of installation work.

[0014] 3. Compared with the stepped anti-slip mats mentioned above, the top platform of this utility model has the smallest area with the same number of mounting holes, thus saving more materials.

[0015] The technical features of a stepped cable saddle anti-slip pad of this utility model will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 : A three-dimensional view of a stepped cable saddle anti-slip pad according to Embodiment 1 of this utility model.

[0017] Figure 2 : A top view of a stepped cable saddle anti-slip pad according to Embodiment 1 of this utility model.

[0018] Figure 3 : Figure 2 AA sectional view.

[0019] Figure 4 : A top view of a stepped cable saddle anti-slip pad according to Embodiment 2 of this utility model.

[0020] Figure 5 : Figure 4 BB cross-sectional view.

[0021] Figure 6 : A three-dimensional view of a stepped cable saddle anti-slip pad according to Embodiment 2 of this utility model.

[0022] Figure 7 : A top view of a stepped cable saddle anti-slip pad, one of the variations of Embodiment 2 of this utility model (the cross-sectional shape of the platform is a regular hexagon with rounded corners).

[0023] Figure 8 : A schematic diagram of the cable saddle structure of the cable-stayed bridge according to Embodiment 1 of this utility model.

[0024] Figure 9 : A schematic diagram of the cable saddle structure of the cable-stayed bridge according to Embodiment 2 of this utility model.

[0025] Figure 10 Schematic diagram of the anchorage structure at the fixed end of the cable saddle of the cable stay.

[0026] Figure 11 : Schematic diagram of the anchorage structure of the cable saddle at the end of the cable stay.

[0027] Figure 12 Schematic diagram of the anchorage structure at the fixed end of the cable saddle of the cable stay.

[0028] Figure 13 Schematic diagram of the anchorage structure at the two tensioning ends of the cable saddle.

[0029] In the figure: 1-base, 2-platform, 21-first-layer platform, 22-second-layer platform, 23-third-layer platform, 3-outer stepped surface, 4-mounting hole, 5-circular inner groove, 6-steel strand, 7-anti-slip key (without thread), 8-double-opening retaining ring, 9-step anti-slip pad of the cable saddle in Example 1, 10-cable saddle, 11-adjusting nut, 12-anti-slip key (with thread), 13-adjusting cylinder, 14-step anti-slip pad of the cable saddle in Example 2, 15-connecting cylinder, 16-retaining ring, 17-nut. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] Example 1: A stepped cable saddle anti-slip pad (smooth hole type), such as Figures 1-3 As shown, the system includes a base 1 and N platforms 2 arranged on the base with decreasing areas from bottom to top, where N is 3. The cross-sectional shape of the base 1 is circular, and the cross-sectional shape of the platform 2 is regular hexagonal. The end faces of the first platform 21 to the second platform 22 form two outer stepped surfaces 3. The top platform (third platform 23), the outer stepped surfaces 3, and the base 1 on the outer side of the platform are all provided with mounting holes 4 corresponding to the number of steel strands to be installed.

[0032] In this embodiment, 18 mounting holes 4 are evenly distributed on the base 1, 12 mounting holes 4 are evenly distributed on the outer stepped surface 3 of the first platform 21, 6 mounting holes 4 are evenly distributed on the outer stepped surface 3 of the second platform 22, and 1 mounting hole 4 is provided on the third platform. The center line connecting the mounting holes on the base and on the outer stepped surface 3 of each platform forms a regular hexagon.

[0033] As a variation, the number of layers and the number of mounting holes of the platform can be adjusted and determined according to the number of steel strands to be installed. For example, the number of layers of the platform can be 4, 5, 6, 7 or more, and the number of layers N of the platform is generally 2 to 20.

[0034] The structure of the cable saddle one of the stay cables, equipped with the stepped anti-slip pad of Example 1, is as follows: Figure 8 As shown. The anchoring structure of one fixed end of the cable saddle of this cable-stayed bridge is as follows. Figure 10As shown, one end of the steel strand 6 passes through the mounting hole of the stepped cable saddle anti-slip pad 9 of Embodiment 1. A split-type retaining ring 8 is provided between the anti-slip key (without threads) 7 on the steel strand and the mounting hole. The anti-slip key 7 presses against the split-type retaining ring 8, and one end of the split-type retaining ring 8 is secured within the mounting hole 4. The stepped cable saddle anti-slip pad 9 of Embodiment 1 is tightly pressed onto the cable saddle 10. The anchoring structure of the tension end of this cable saddle is as follows: Figure 11 As shown, the other end of the steel strand 6 passes through the mounting hole of the stepped cable saddle anti-slip pad 9 of Embodiment 1. The anti-slip key (with threads) 12 on the steel strand is pressed and installed on the mounting hole 4 by the adjusting nut 11 connected to its threads. The stepped cable saddle anti-slip pad 9 of Embodiment 1 is pressed tightly on the cable saddle 10.

[0035] Example 2: A stepped cable saddle anti-slip pad (threaded hole type), such as Figures 4-6 As shown, its basic structure is the same as that of Embodiment 1, except that the outer surfaces of the first and second platforms have anti-interference arc-shaped grooves 5 corresponding to the positions of the mounting holes, which facilitates the installation of large-sized adjustment components. The mounting holes 4 are provided with internal threads at the ends for installing the adjustment components.

[0036] As a variation of this embodiment, the circular arc groove 5 may be omitted if it is ensured that the side of the platform will not interfere with the adjustment component.

[0037] As another variation of this embodiment, the cross-sectional shape of the platform is a regular hexagon with rounded corners (e.g., ...). Figure 7 (As shown). The cross-sectional shape of the top-level platform can also be set to circular.

[0038] As a variation of the various embodiments of this utility model, the cross-sectional shape of the base and platform can be adjusted and changed according to actual usage.

[0039] The structure of the second cable saddle of the inclined cable, which is equipped with the stepped anti-slip pad of Example 2, is as follows: Figure 9 As shown. The anchoring structure of the two fixed ends of the cable saddle of the cable stay is as follows. Figure 12 As shown, one end of the steel strand 6 passes through the mounting hole of the stepped cable saddle anti-slip pad 9 in Embodiment 2. The anti-slip key (without threads) 7 on the steel strand is secured in the mounting hole 4 by the adjusting cylinder 13. The adjusting cylinder 13 is threadedly connected to the mounting hole 4. The stepped cable saddle anti-slip pad 9 in Embodiment 2 is pressed tightly onto the cable saddle 10. The anchoring structure of the two tensioning ends of the cable saddle of this cable-stayed cable is as follows: Figure 13As shown, the other end of the steel strand 6 passes through the mounting hole of the stepped cable saddle anti-slip pad 9 in Embodiment 2. The anti-slip key (without thread) 7 on the steel strand is fixed with a retaining ring 16. A nut 17 is fitted over the retaining ring. A connecting cylinder 15 is threadedly connected to the mounting hole of the stepped cable saddle anti-slip pad 9 in Embodiment 2. The nut 17 presses the retaining ring and is threadedly connected to the connecting cylinder 15 to achieve the pressing and fixing of the steel strand. The stepped cable saddle anti-slip pad 9 in Embodiment 2 is pressed tightly on the cable saddle 10.

Claims

1. A stepped cable saddle anti-slip pad, characterized in that: It includes a base (1) and N layers of platforms (2) set on the base with the area decreasing from bottom to top. The end faces of the first platform to the N-1th platform form the outer peripheral step surface (3). The top platform, the outer step surface and the base outside the platform have mounting holes (4) corresponding to the number of steel strands to be installed, where N is 2 to 20.

2. The stepped cable saddle anti-slip pad according to claim 1, characterized in that: The center line connecting the mounting holes on the base and the center line connecting the mounting holes on the outer edge of each step (3) are both regular hexagons.

3. The stepped cable saddle anti-slip pad according to claim 2, characterized in that: The base has a circular cross-sectional shape, and the platform has a regular hexagonal cross-sectional shape.

4. The stepped cable saddle anti-slip pad according to claim 2, characterized in that: The base and the Nth platform have circular cross-sectional shapes, while the remaining platforms have regular hexagonal cross-sectional shapes.

5. A stepped cable saddle anti-slip pad according to any one of claims 1-4, characterized in that: The outer surfaces of the first to N-1th platform have anti-interference arc-shaped grooves (5) corresponding to the positions of the mounting holes.

6. A stepped cable saddle anti-slip pad according to any one of claims 1-4, characterized in that: The end of the mounting hole is provided with an internal thread.

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