A cable saddle and cable saddle system

Abstract

The utility model relates to bridge engineering technical field, especially a kind of cable saddle and cable cable saddle system, cable saddle includes several pulley assemblies, and it is equipped with inlay board between two adjacent pulley assemblies, it is equipped with load-bearing assembly on the inlay board, the pulley assembly includes central wheel axle and pulley, the central wheel axle sleeve sets protruding groove shaft sleeve, the pulley is rotatably connected with the protruding groove shaft sleeve by connecting sleeve, the pulley assembly is detachably connected in two side load-bearing assembly.The pulley, the sleeve, the protruding groove shaft sleeve and the intermediate axle form the pulley assembly that can be independently disassembled, and several pulley assemblies are arranged along the pulley axial arrangement to replace the conventional length axle of prior art, while the installation efficiency of pulley assembly is improved, so that each pulley assembly forms the short column type load-bearing unit that can be independently disassembled, axle stress mode is optimized as the short column structure mainly of pressure and shear, the problem of bending moment concentration and excessive end shear is solved.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a cable saddle and cable saddle system. Background Technology

[0002] The cable-stayed bridge construction method, with its unique structural advantages and construction characteristics, has become the preferred construction technique for modern arch bridges. This method optimizes structural stress during construction through a rational stress system design; its modular construction approach not only significantly improves work efficiency but also demonstrates good terrain adaptability, thus gaining widespread application and promotion in the field of arch bridge construction. As a crucial component of the cable-stayed bridge construction method, the cable saddle plays a key role in transmitting cable force and adjusting the spatial position of the cable strands. Its performance directly affects the force transmission efficiency, construction accuracy, and long-term durability of the entire main cable system.

[0003] Traditional cable saddles employ a continuous axle design, with each saddle wheel sharing a single through-type axle and connected and fixed by a lacing plate. When the vertical load of the main cable is transferred to the axle by the pulley, the axle as a whole exhibits a simply supported beam stress state and bears a large bending moment, leading to stress concentration in the end components. This seriously affects construction safety and equipment lifespan. Furthermore, this continuous axle structure requires extremely high precision in processing and installation. If there is a certain deviation in the processing and installation precision of the lacing plate, the continuous axle will be difficult to insert, significantly affecting on-site construction efficiency. Moreover, this axle structure has inherent defects such as uneven stress distribution and difficult maintenance, making it difficult to meet the needs of modern large-span arch bridge construction.

[0004] As modern bridge engineering rapidly develops towards larger spans and higher precision, the structural limitations of traditional cable saddles are becoming increasingly apparent. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology where the entire continuous wheel axle is in a simply supported beam state and bears a large bending moment, resulting in stress concentration in the end components, and to provide a cable saddle and cable saddle system.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: In a first aspect, the present invention provides a cable saddle, comprising a plurality of pulley assemblies, with a gusset plate between two adjacent pulley assemblies, and a load-bearing component on the gusset plate. Each pulley assembly includes a central axle and a pulley, the central axle being fitted with a grooved bushing, and the pulley being rotatably connected to the grooved bushing via a connecting sleeve. The pulley assembly is detachably connected to the load-bearing components on both sides.

[0007] The pulley, sleeve, grooved bushing, and central axle form an independently detachable pulley assembly. Several pulley assemblies are arranged along the pulley axis, replacing the traditional continuous axle of the prior art. This improves the installation efficiency of the pulley assembly while making each pulley assembly a short column-type load-bearing unit that can be independently detached. The axle force mode is optimized to a short column structure dominated by pressure and shear force, solving the problems of concentrated bending moment and excessive end shear force in traditional designs. This achieves precise cable guidance and facilitates maintenance and replacement, thereby improving the overall load-bearing capacity of the cable system.

[0008] Preferably, both ends of the central wheel axle are provided with protrusions, the top surface of the protrusions has a stepped structure, and the protrusions are used to connect with the load-bearing components.

[0009] The longitudinal section direction described in this solution is the same as the direction in which the longitudinal section of the central wheel axle is cut out as a circle.

[0010] With this technical solution, the top surface of the protrusion has a stepped structure that provides lateral restraint to the central wheel axle, allowing the pulley to be rotatably connected to the sleeve and the grooved bushing. At the same time, the protrusion is also the force transmission part of the pulley assembly, reducing rotational wear.

[0011] Preferably, the load-bearing component includes a connecting plate and a supporting plate, the connecting plate and the supporting plate being able to enclose and form a through hole for the protrusion to pass through; the supporting plate has a U-shaped cross-section, the connecting plate is a flat plate, the connecting plate and the supporting plate are bolted together, and the supporting plate is connected to the gusset plate.

[0012] With this technical solution, the protrusion and the through hole are matched to limit the rotation of the central wheel axle; by setting the cross section of the support plate to U-shape, the compatibility between the load-bearing component and the U-shaped protrusion is improved.

[0013] Preferably, the top surface of the connecting plate is provided with an upper partition.

[0014] This technical solution facilitates the maintenance and replacement of pulley assemblies, while also improving the overall load-bearing capacity of the cable saddle device.

[0015] Preferably, an oil groove is provided on the sleeve, and a second bolt is provided at the opening of the oil groove.

[0016] With this technical solution, the oil groove enters the central wheel axle through the sleeve and the grooved bushing, and covers the surface of the wheel axle as the central wheel axle rotates, thereby improving the smoothness of the rotation of the central wheel axle; the setting of the oil groove helps to ensure that the lubricating oil does not overflow.

[0017] Preferably, bushings are provided at both ends of the central wheel axle, and the bushings are used to create gaps between the pulley and the load-bearing component and the connecting plate, respectively.

[0018] With this technical solution, when the pulley assembly is subjected to lateral force from the cable, it can abut against the load-bearing components on both sides in the longitudinal direction. This gap setting can solve the problem that the force on the traditional cable saddle will not be transmitted from the current pulley to the adjacent pulley under the influence of lateral force, resulting in slow rotation of the pulley and severe wear of the adjacent components.

[0019] Preferably, the system further includes a support, with end plates at both ends of the support, and a plurality of the pulley assemblies disposed between the end plates.

[0020] In a second aspect, the present invention provides a cable saddle system, including a base, a saddle groove, and several of the above-mentioned cable saddle seats, wherein the pulley assembly has a groove for cooperating with a cable.

[0021] This solution forms a cable support system by setting up multiple sets of cable saddles. When the cable turns, the pulleys can rotate to cooperate with the cable to complete the directional change and longitudinal displacement. Since each pulley assembly is equipped with an independent wheel and axle structure connected to the load-bearing component, the overall stress state is similar to that of a short column, and the overall load-bearing capacity is improved. At the same time, it solves the technical problems of difficult installation of full-length wheel and axle assemblies, jamming of traditional cable saddle rotation, and wear of the gusset plate.

[0022] Preferably, the saddle groove is arc-shaped.

[0023] Using this technical solution, the arc-shaped saddle groove allows the cable to fit closely to the surface of the pulley over a large area, dispersing the pressure on the cable and avoiding localized stress concentration.

[0024] Preferably, cable guide wheels are provided at both ends of the base.

[0025] This technical solution allows the cable to smoothly bypass the saddle system, avoiding direct friction between the cable and the base or other components, thus protecting the cable structure.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a cable saddle, wherein the pulley, the sleeve, the grooved bushing, and the central wheel axle form an independently detachable pulley assembly, and several pulley assemblies are arranged along the pulley axis to replace the traditional continuous wheel axle of the prior art. While improving the installation efficiency of the pulley assembly, each pulley assembly forms an independently detachable short column load-bearing unit. The wheel axle force mode is optimized to a short column structure dominated by pressure and shear force, solving the problems of concentrated bending moment and excessive end shear force in traditional designs.

[0027] 2. This utility model provides a cable saddle system, which forms a cable support system by setting multiple sets of cable saddle seats. When the cable turns, the pulley can rotate to cooperate with the cable to complete the change of direction and longitudinal displacement. Since each pulley assembly is provided with an independent wheel and axle structure connected to the load-bearing component, the overall stress state is similar to that of a short column, and the overall load-bearing capacity is improved. At the same time, it solves the technical problems of difficult installation of full-length wheel and axle assemblies, jamming of traditional cable saddle rotation and wear of the gusset plate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the longitudinal section of the cable saddle. Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial cross-sectional schematic diagram of the load-bearing component; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the longitudinal section of the central wheel axle; Figure 6 This is a schematic diagram of the cable saddle system.

[0029] Marked in the image: 1-Central wheel axle, 2-Groove bushing, 3-Bushing, 4-Sleeve, 5-Oil groove, 6-Cable guide wheel, 7-Pulley, 8-Wheel groove, 9-Support, 10-Drape plate, 11-End plate, 12-Base, 13-Cable, 14-Second bolt, 15-Protrusion, 16-Through hole, 601-Upper partition plate, 602-Connecting plate, 603-Support plate, 604-First bolt. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1 like Figure 1-5 As shown, a cable saddle includes several pulley assemblies, with a connecting plate 10 between two adjacent pulley assemblies. The connecting plate 10 is provided with a load-bearing component. Each pulley assembly includes a central wheel axle 1 and a pulley 7. The central wheel axle 1 is fitted with a grooved bushing 2. The pulley 7 is rotatably connected to the grooved bushing 2 through a connecting sleeve 4. The pulley assembly is detachably connected to the load-bearing components on both sides.

[0037] Specifically, the central wheel axle 1 is fitted with the grooved bushing 2, and the grooved bushing 2 is provided with the sleeve 4 for connecting the pulley 7; the pulley 7, the sleeve 4, the grooved bushing 2 and the intermediate wheel axle 1 form an independently detachable assembly.

[0038] This solution addresses the problems of concentrated bending moment and excessive end shear force in traditional designs by making each pulley assembly a short column-type load-bearing unit that can be independently disassembled and assembled. The wheel and axle force mode is optimized to a short column structure dominated by pressure and shear force.

[0039] In an optional embodiment, both ends of the central wheel axle 1 are provided with protrusions 15, the top surface of the protrusions 15 has a stepped structure, and the protrusions 15 are used to connect with the load-bearing component.

[0040] Specifically, the U-shaped bottom can be either curved or straight.

[0041] In an optional embodiment, the load-bearing component includes a connecting plate 602 and a support plate 603, which can be closed to form a through hole 16 for the protrusion 15 to pass through; the support plate 603 has a U-shaped cross-section, the connecting plate 602 is a flat plate, the connecting plate 602 and the support plate 603 are bolted together, and the support plate 603 is connected to the gusset plate 10.

[0042] In an optional embodiment, the top surface of the connecting plate 602 is provided with an upper partition 601. This facilitates the disassembly of the load-bearing components, is beneficial for the maintenance and replacement of the pulley components, and simultaneously improves the overall load-bearing capacity of the cable saddle device; specifically, the upper partition 601 is flush with the upper edge line of the pulley 7.

[0043] In an optional embodiment, an oil groove 5 is provided on the sleeve 4, and a second bolt 14 is provided at the groove opening of the oil groove 5.

[0044] The oil groove 5 is used to add lubricating oil. The oil groove 5 passes through the sleeve 4 and the grooved bushing 2 and enters the central wheel axle 1. As the central wheel axle 1 rotates, the oil groove 5 covers the surface of the wheel axle to improve the smoothness of the rotation of the central wheel axle 1. Alternatively, other lubricating liquids may be used, including but not limited to oil or lubricant.

[0045] A corresponding second bolt 14 is provided above the oil sump 5 to ensure that the lubricating oil does not overflow. The second bolt 14 can be any type of bolt, including but not limited to patterned bolts, hexagonal head bolts, square head bolts, round head bolts, and countersunk head bolts.

[0046] In an optional embodiment, bushings 3 are provided at both ends of the central wheel axle 1, and the bushings 3 are used to create gaps between the pulley 7 and the load-bearing component and the connecting plate 10, respectively.

[0047] When the pulley assembly is subjected to lateral force from the cable 13, it can abut against the left and right side assemblies in the longitudinal direction. This gap setting can solve the problem that the lateral force on the traditional cable saddle will not be transmitted from the current pulley 7 to the adjacent pulley 7, resulting in the pulley 7 rotating slowly and the adjacent assemblies wearing out severely.

[0048] In an optional embodiment, a support 9 is further included, with end plates 11 provided at both ends of the support 9, and a plurality of pulley assemblies are disposed between the end plates 11.

[0049] Specifically, the support 9 is located at the bottom of the pulley assembly and serves as the main load-bearing structure, providing stable support for the pulley assembly.

[0050] Example 2 like Figure 6 As shown, a cable saddle system includes a base 12, a saddle groove, and several cable saddle seats as described in Embodiment 1, wherein the pulley groove 8 of the pulley assembly is used to cooperate with the cable 13.

[0051] The system consists of the base 12, several cable saddles, and saddle grooves. Multiple pulley assemblies form a cable support system. When the cable 13 turns, the pulleys 7 can rotate to cooperate with the cable 13 in changing direction and longitudinal displacement. Since each pulley assembly has an independent axle structure connected to the bottom load-bearing component, the overall stress state is similar to that of a short column, thus improving the overall load-bearing capacity and avoiding the problems of excessive bending moment in the middle and excessive shear force at both ends in traditional long axles. Furthermore, each pulley assembly has bushings 3 on both sides, with a certain gap between them and the side plates 10. This also solves the problems of the traditional cable saddle where the side plates 10 are compressed, causing the pulleys 7 to be obstructed from rotating and causing severe direct wear of the side plates 10, significantly improving the overall load-bearing capacity of the cable saddle.

[0052] Each of the pulley assemblies is provided with a groove 8, and each pulley assembly is provided with a groove 8 that precisely matches the diameter of the cable 13, so as to ensure the smoothness and stability of the cable 13 during operation.

[0053] In an optional embodiment, the saddle groove is configured as an arc shape. The arc-shaped saddle groove allows the cable 13 to fit in close contact with the surface of the pulley 7 over a large area, dispersing the pressure on the cable 13 and avoiding local stress concentration.

[0054] Specifically, the arc shape of the saddle groove can be a standard circular arc or a gentle circular arc.

[0055] In an optional embodiment, cable guide wheels 6 are provided at both ends of the base 12, so that the cable 13 can smoothly pass around the cable saddle system, avoiding direct friction between the cable 13 and the base 12 or other components, and protecting the cable structure.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable saddle, characterized in that, It includes several pulley assemblies, with a connecting plate (10) between two adjacent pulley assemblies. The connecting plate (10) is provided with a load-bearing component. The pulley assembly includes a central wheel axle (1) and a pulley (7). The central wheel axle (1) is fitted with a grooved bushing (2). The pulley (7) is rotatably connected to the grooved bushing (2) through a connecting sleeve (4). The pulley assembly is detachably connected to the load-bearing components on both sides.

2. A cable saddle according to claim 1, characterized in that, Both ends of the central wheel axle (1) are provided with protrusions (15), the top surface of the protrusions (15) has a stepped structure, and the protrusions (15) are used to connect with the load-bearing components.

3. A cable saddle according to claim 2, characterized in that, The load-bearing component includes a connecting plate (602) and a support plate (603). The connecting plate (602) and the support plate (603) can be closed to form a through hole (16) through which the protrusion (15) passes. The support plate (603) has a U-shaped cross section, the connecting plate (602) is a flat plate, the connecting plate (602) and the support plate (603) are bolted together, and the support plate (603) is connected to the gusset plate (10).

4. A cable saddle according to claim 3, characterized in that, The top surface of the connecting plate (602) is provided with an upper partition (601).

5. A cable saddle according to claim 1, characterized in that, An oil groove (5) is provided on the sleeve (4), and a second bolt (14) is provided at the groove opening of the oil groove (5).

6. A cable saddle according to claim 1, characterized in that, Both ends of the central wheel axle (1) are provided with bushings (3), which are used to create gaps between the pulley (7) and the load-bearing component and the gusset plate (10).

7. A cable saddle according to any one of claims 1-6, characterized in that, It also includes a support (9), with end plates (11) at both ends of the support (9), and a plurality of pulley assemblies disposed between the end plates (11).

8. A cable saddle system, characterized in that, Includes a base (12), a saddle groove and several cable saddles as described in any one of claims 1-7, wherein the pulley assembly has a wheel groove (8) for engaging with a cable (13).

9. A cable saddle system according to claim 8, characterized in that, The saddle groove is designed to be arc-shaped.

10. A cable saddle system according to claim 8 or 9, characterized in that, Cable guide wheels (6) are provided at both ends of the base (12).

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