Assembly type rolling shaft structure for rolling shaft type splay cable saddle

Abstract

The utility model discloses an assembly type rolling shaft structure for a rolling shaft type splay cable saddle, and relates to the field of suspension bridges, in particular to the assembly type rolling shaft structure for the rolling shaft type splay cable saddle, and the rolling shaft type splay cable saddle comprises a splay cable saddle body, a rolling shaft assembly and a base which are sequentially arranged from top to bottom; the rolling shaft assembly comprises a plurality of rolling shafts arranged on the base, each rolling shaft comprises an arc block and a shaft body, and the arc blocks are detachably arranged on the shaft bodies. The rolling shaft has the advantages that the rolling shaft arc blocks and the rolling shaft body are manufactured separately, so that the manufacturing cost can be greatly reduced. And meanwhile, by selecting the combination of different materials, different use conditions and requirements can be better adapted. In addition, due to the assembly type design, maintenance and replacement are facilitated, and the use flexibility of the rolling shaft is improved. The utility model provides a novel rolling shaft structure scheme, which has important practical significance for reducing the manufacturing cost of high-pressure-bearing parts.

Description

Technical Field

[0001] The utility model relates to the field of suspension bridges, and particularly relates to an assembled roller structure for a roller-type cable saddle. Background Art

[0002] The cable saddle is an important core component of a suspension bridge. Whether in the construction stage or the operation stage, due to factors such as impact dynamic loads and temperature changes, the cable force differences between the side and anchor spans of the main cable will be caused, thereby causing the longitudinal displacement of the cable saddle. Therefore, a set of permanent structures capable of longitudinal movement or swinging is required at the bottom of the cable saddle, so that the cable forces of the side and anchor spans of the main cable can reach a balanced state at a new position.

[0003] The roller-type cable saddle realizes the longitudinal movement of the cable saddle by arranging a roller assembly composed of multiple steel rollers between the bottom plate of the saddle body and the base.

[0004] Due to its advantages such as good stability and strong bearing capacity, the roller-type cable saddle is increasingly favored by bridge designers.

[0005] In the existing technology, in order to meet the requirements of high hardness, the methods of integral forging and integral heat treatment are usually adopted. This method not only has high costs but also low material utilization rate.

[0006] There is an urgent need for an assembled roller structure for a roller-type cable saddle to solve the above problems. Summary of the Invention

[0007] The purpose of the utility model is to provide an assembled roller structure for a roller-type cable saddle aiming at the above existing problems.

[0008] The technical scheme adopted by the utility model is as follows:

[0009] An assembled roller structure for a roller-type cable saddle, the roller-type cable saddle includes a cable saddle body, a roller assembly and a base which are arranged in sequence from top to bottom;

[0010] The roller assembly includes multiple rollers arranged on the base, and each roller includes an arc block and a shaft body, and the arc block is detachably arranged on the shaft body.

[0011] Further, multiple rollers are arranged on the base with the same axial orientation.

[0012] Further, the arc blocks are arranged on both radial sides of the shaft body, that is, the two sides in contact with the cable saddle body and the base.

[0013] Further, the arc block and the shaft body are provided with corresponding installation holes for screwing in screws to fix the arc block on the shaft body.

[0014] Further, the end of the screw is provided with an arc surface matching the surface of the arc block.

[0015] Furthermore, a rabbet for preventing the arc block from shifting is provided on the splicing surface between the arc block and the shaft body.

[0016] Furthermore, the rabbet is provided on the shaft body or the arc block.

[0017] Furthermore, the arc block provided on one side of the shaft body can be divided into multiple segments.

[0018] Furthermore, the multiple segments of arc blocks are connected by dovetail grooves.

[0019] Furthermore, an anti-slip layer is provided between the multiple segments of arc blocks.

[0020] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0021] By using this assembled roller structure, the present utility model can not only realize the detachable setting of the friction part, which is convenient for on-site construction workers to replace the arc block after wear. The replacement method is simple, fast, time-saving and labor-saving, and there is no need to replace the shaft body assembly, which greatly saves the labor and material costs.

[0022] In addition, considering that the pressure-bearing part is mainly the arc block part, high-strength materials such as alloy steel or martensitic stainless steel are used as materials in the manufacturing process of the arc block, which can greatly improve the strength of the shaft body and its durability. In the manufacturing process of the shaft body, ordinary low-alloy steel thick plates or ordinary carbon steel forgings are used as materials, which can greatly save the manufacturing cost and improve the durability of the roller.

[0023] At the same time, the stability of the suspension bridge can be maximally ensured, providing safety guarantee for the suspension bridge site. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the structural diagram of the present utility model;

[0025] Figure 2 is the roller structural diagram of the present utility model;

[0026] Figure 3 is the roller sectional view of the present utility model;

[0027] Figure 4 is the roller sectional view of the second embodiment of the present utility model.

[0028] Markings in the figure:

[0029] 1 - Saddle body of the loose cable saddle, 2 - Roller assembly, 3 - Base, 4 - Arc block, 5 - Shaft body, 6 - Mounting hole, 7 - Screw, 8 - Rabbet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will combine with the attached drawings to make a detailed description of the present utility model.

[0031] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in combination with the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] Embodiment 1

[0033] In this embodiment, as Figure 1 , Figure 2 shown, an assembled roller structure for a roller-type cable saddle. The roller-type cable saddle includes a cable saddle body 1, a roller assembly 2 and a base 3 arranged in sequence from top to bottom; a roller assembly 2 composed of multiple steel rollers is arranged between the bottom plate of the saddle body and the base 3 of the roller-type cable saddle to realize the longitudinal movement of the cable saddle, ensuring that during the construction stage or the operation stage, when the cable force difference of the side and anchor span main cables is caused by factors such as impact dynamic load and temperature change, the cable saddle can generate longitudinal displacement on the roller assembly 2 to maintain its stability and safety.

[0034] The roller assembly 2 includes multiple rollers arranged on the base 3. The roller includes an arc block 4 and a shaft body 5. The arc block 4 is detachably arranged on the shaft body 5; by using multiple rollers to form the roller assembly 2, the longitudinal displacement space of the cable saddle body 1 can be guaranteed to the greatest extent. The number of rollers can be determined according to the size of the cable saddle body 1, and then the overall size of the roller assembly 2 can be obtained, greatly improving the on-site work efficiency;

[0035] Furthermore, the roller includes an arc block 4 and a shaft body 5. The arc block 4 is detachably arranged on the shaft body 5; the roller is divided into multiple parts by an assembled method and is made of different materials. The arc block 4 part is used to contact the cable saddle body 1 and the bottom plate, providing a smooth contact surface for the longitudinal displacement of the cable saddle body 1. Considering that the main pressure-bearing part is the arc block 4 part, high-strength materials such as alloy steel or martensitic stainless steel are used as materials during the manufacturing process of the arc block 4, which can greatly improve the strength of the shaft body 5 and its durability. Ordinary low-alloy steel thick plates or ordinary carbon steel forgings are used as materials during the manufacturing process of the shaft body 5. In this way, the manufacturing cost can be greatly saved and the durability of the roller can be improved;

[0036] Specifically, the shaft body 5 is set in the shape of a cuboid, and arc blocks 4 are provided on the surfaces in contact with the saddle body 1 of the cable saddle and the base 3. The bottom surface of the arc block 4 matches the shaft body 5, and the upper part is set in an arc shape, with a fan-shaped cross-section. The assembly of the arc block 4 and the shaft body 5 can adopt an interference fit method. By precisely controlling the interference amount, the stability and reliability of the roller during operation can be ensured. A stop 8 is provided on the roller body or the arc surface of the roller to achieve an interference fit. The size of the stop 8 needs to be accurately calculated and controlled according to the interference amount to ensure the stability and reliability of the assembly.

[0037] Further, multiple rollers are arranged on the base 3 with the same axial orientation; in order to enable the saddle body 1 of the cable saddle to displace on the roller assembly 2, multiple rollers are arranged on the base 3 with the same axial orientation, and the saddle body 1 of the cable saddle can slide radially along multiple rollers;

[0038] Further, the arc blocks 4 are provided on both radial sides of the shaft body 5, that is, on both sides in contact with the saddle body 1 of the cable saddle and the base 3; it can realize the detachable setting of the friction part, which is convenient for on-site construction personnel to replace the arc blocks 4 after wear. The replacement method is simple, fast, time-saving and labor-saving, without replacing the shaft body 5 assembly, greatly saving the labor and material costs.

[0039] Further, the arc blocks 4 and the shaft body 5 are provided with corresponding mounting holes 6, and the mounting holes 6 are used for screwing in the screws 7 that fix the arc blocks 4 to the shaft body 5; a counterbore is made on the arc of the roller, and mounting holes 6 are made at the corresponding positions on the roller body, and the arc blocks 4 of the roller are bolted to the roller body by high-strength screws 7; appropriate clearance fit holes can be provided on the stop 8. Through the screws 7 passing through these holes, the arc blocks 4 of the roller and the roller body are firmly fixed together. The diameter and number of the screws 7 should be selected and adjusted according to the actual situation to ensure the stability and reliability of the assembly.

[0040] Further, the end of the screw 7 is set to an arc surface that matches the surface of the arc block 4; in this embodiment, the screws 7 are set in two rows, avoiding the top part of the arc block 4 to prevent the saddle body 1 of the cable saddle from directly rubbing against the screws 7 and preventing the screws 7 from deforming and affecting the roller effect;

[0041] Further, in order to keep the surface of the arc block 4 smooth after the screw 7 is driven in, the surface of the screw head is flush with the surface of the arc block 4 after the bolt is tightened, so the surface of the screw head is set to a smooth curved surface.

[0042] Further, as Figure 3As shown, a rabbet 8 for preventing the offset of the arc block 4 is provided on the splicing surface of the arc block 4 and the shaft body 5; in this embodiment, the rabbet 8 is provided on the shaft body 5, grooves are opened on both sides of the shaft body 5 where the arc block 4 is installed, and the size of the grooves is the same as the bottom surface size of the arc block 4. After the arc block 4 is installed, it is firmly stuck in the rabbet 8. When the longitudinal displacement occurs on the saddle body 1 of the cable spreader saddle, the arc block 4 is not likely to displace, maintaining its stability.

[0043] Furthermore, the arc block 4 provided on one side of the shaft body 5 can be divided into multiple segments. This segmented design can reduce the processing difficulty, improve the manufacturing efficiency, and at the same time ensure the assembly accuracy and overall strength.

[0044] Furthermore, the multiple arc blocks 4 are connected through dovetail grooves. Dovetail grooves are provided between the segments of the multiple arc blocks 4. Such a setting can strengthen the connection strength between each arc block 4, making it not easily separated due to external forces.

[0045] Furthermore, a manufacturing method for an assembled roller structure of a roller - type cable spreader saddle includes the following steps:

[0046] S1: Use ordinary low - alloy steel thick plates or ordinary carbon steel forgings as materials to manufacture the shaft body 5; perform aging treatment on the rough - machined shaft body 5 to eliminate the internal stress of the workpiece; perform finish machining on the shaft body 5; perform finish machining on the rabbet 8 (if any) to ensure that the flatness of the splicing surface of the arc block 4 and the shaft body 5 is within 0.01 mm.

[0047] S2: Use high - strength materials such as alloy steel or martensitic stainless steel as materials to manufacture the arc block 4; perform aging treatment on each surface of the rough - machined arc block 4 to eliminate the internal stress of the workpiece; perform finish machining on the surfaces that cooperate with the shaft body 5, and control the flatness of the surface that cooperates with the roller body within 0.01 mm; perform finish machining on the rabbet 8 (if any).

[0048] S3: If the interference fit method is used, connect the arc block 4 and the shaft body 5 using the cold - fitting process; if the screw 7 bolting method is used, make counter - sunk holes on the roller arc and make mounting holes 6 at the corresponding positions on the roller body, and use high - strength screws 7 to bolt the roller arc block 4 and the roller body.

[0049] S4: After the roller arc block 4 and the roller body are connected, grind the outer circle of the roller on an external cylindrical grinder to ensure that the outer - circle tolerance meets the design requirements.

[0050] Embodiment Two

[0051] On the basis of Embodiment One, as Figure 4As shown in the figure, the rabbet 8 is provided on the arc block 4, and a groove is opened on the bottom surface of the arc block 4. The size of the groove is the same as the size of the upper end of the shaft body 5. After the arc block 4 is installed, it is firmly stuck in the rabbet 8. When the longitudinal displacement of the saddle body 1 of the spreader saddle occurs thereon, the arc block 4 is not easily displaced, and its stability is maintained.

[0052] The above are only the preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. An assembled roller structure for a roller type cable saddle, characterized in that: The roller type cable saddle comprises a cable saddle body (1), a roller assembly (2) and a base (3) which are arranged in sequence from top to bottom; The roller assembly (2) comprises a plurality of rollers arranged on a base (3), the rollers comprising an arc block (4) and an axle body (5), and the arc block (4) is detachably arranged on the axle body (5).

2. The assembled roller structure for a roller type cable saddle according to claim 1, characterized in that: The plurality of rollers are arranged on the base (3) in the same axial direction.

3. The assembled roller structure for a roller type cable saddle according to claim 1, characterized in that: The arc blocks (4) are arranged on both radial sides of the shaft body (5), namely, on both sides in contact with the cable saddle body (1) and the base (3).

4. The assembled roller structure for a roller type cable saddle according to claim 1, characterized in that: The arc block (4) and the shaft body (5) are provided with corresponding mounting holes (6), and the mounting holes (6) are used to screw in screws (7) for fixing the arc block (4) to the shaft body (5).

5. The assembled roller structure for a roller type cable saddle according to claim 4, characterized in that: The end of the screw (7) is arranged as an arc surface matching the surface of the circular arc block (4).

6. The assembled roller structure for a roller type cable saddle according to claim 1, characterized in that: The joint surface between the circular arc block (4) and the shaft body (5) is provided with a stopper (8) for preventing the circular arc block (4) from deflecting.

7. The assembled roller structure for a roller type cable saddle according to claim 6, characterized in that: The stopper (8) is arranged on the shaft body (5) or the arc block (4).

8. The assembled roller structure for a roller type cable saddle according to claim 1, characterized in that: The circular arc block (4) arranged on one side of the shaft body (5) can be divided into multiple sections.

9. The assembled roller structure for a roller type cable saddle according to claim 8, characterized in that: The multiple arc blocks (4) are connected via dovetail grooves.

10. The assembled roller structure for a roller type cable saddle according to claim 8, characterized in that: An anti-slip layer is provided between the multiple circular arc blocks (4).

Images