Damping device of double-amplitude stay cable

Abstract

The invention relates to the technical field of cable-stayed bridges, and particularly discloses a damping device of a double-amplitude stay cable, the double-amplitude stay cable comprises a first stay cable and a second stay cable, the double-amplitude stay cable comprises a first retaining ring and a second retaining ring, the first retaining ring sleeves the first stay cable, and the second retaining ring sleeves the second stay cable; the device further comprises more than one telescopic rod. The telescopic rod comprises a telescopic sleeve and a telescopic sliding rod; one end of the telescopic sleeve is connected to the first retaining ring, and one end of the telescopic sliding rod is connected to the second retaining ring; or one end of the telescopic sleeve is connected to the second retaining ring, and one end of the telescopic sliding rod is connected to the first retaining ring; a piston is arranged at the other end of the telescopic sliding rod and is inserted into the telescopic sleeve from the other end of the telescopic sleeve; and a stop block for preventing the piston from sliding out of the telescopic sleeve is also arranged at the other end of the telescopic sleeve. The problems that an existing damper is not suitable for the construction stage, and consequently an effective vibration reduction structure is lacked in the construction stage are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable-stayed bridges, and particularly to a vibration damping device for double-span stay cables. Background Art

[0002] Stay cables, also known as cables, are the main load-bearing members that directly transfer the weight of the main girder and bridge deck of a cable-stayed bridge to the tower. The tower and beam of a cable-stayed bridge are composed of many "single stay cables", but as the bridge span or deck width increases, "tandem double-span stay cables" are more widely used. In the actual construction process, it is found that tandem double-span stay cables, that is, double-span stay cables, are prone to wind-induced vibration mainly involving high-order modes, and it is manifested that one stay cable has obvious wind-induced vibration while the adjacent stay cable vibrates weakly.

[0003] Due to their slender, light and low-damping characteristics, the stay cables of long-span cable-stayed bridges are extremely prone to various forms of vibration under wind loads, collectively referred to as wind-induced vibration. These vibrations will cause cable fatigue, damage to the anchorage system, and even affect the overall safety and driving comfort of the bridge. During the construction stage of a cable-stayed bridge, the stay cables are not fully tensioned, and the dynamic characteristics of the stay cables are significantly different from those in the completed bridge state.

[0004] The existing wind-induced vibration damping measures for stay cables are dampers. The damper is used to increase the damping ratio of the stay cable. The premise for the damper to be effective is that the design parameters of the damper need to be determined according to the cable force of the stay cable. During the construction stage of a cable-stayed bridge, the cable force of the stay cable changes, making it difficult to determine the design parameters of the damper and possibly leading to the failure of the damper. Therefore, the damper is not applicable to the construction stage of double-span stay cables. There is a lack of an effective vibration damping structure during the construction stage, and wind-induced vibration will cause cable fatigue and damage to the anchorage system during the construction stage, thereby affecting the bridge safety. Summary of the Invention

[0005] The purpose of the present invention is to provide a vibration damping device for double-span stay cables to solve the problem that the existing damper is not applicable to the construction stage of double-span stay cables, resulting in a lack of an effective vibration damping structure during the construction stage.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A vibration damping device for a double-span stay cable. The double-span stay cable includes a first stay cable and a second stay cable, and includes a first buckle sleeve and a second buckle sleeve. The first buckle sleeve is sleeved on the first stay cable, and the second buckle sleeve is sleeved on the second stay cable. It also includes more than one telescopic rod. The telescopic rod includes a telescopic sleeve and a telescopic slide rod. One end of the telescopic sleeve is connected to the first buckle sleeve, and one end of the telescopic slide rod is connected to the second buckle sleeve; alternatively, one end of the telescopic sleeve is connected to the second buckle sleeve, and one end of the telescopic slide rod is connected to the first buckle sleeve. The other end of the telescopic slide rod is provided with a piston, and the piston is inserted into the telescopic sleeve from the other end of the telescopic sleeve. A stop block for preventing the piston from sliding out of the telescopic sleeve is also provided at the other end of the telescopic sleeve.

[0007] Further, the first buckle sleeve is longitudinally bisected into a left half part of the first buckle sleeve and a right half part of the first buckle sleeve. The left half part of the first buckle sleeve is provided with a plurality of connecting grooves, and the right half part of the first buckle sleeve is provided with a plurality of connecting blocks. The left half part of the first buckle sleeve and the right half part of the first buckle sleeve can be clamped or disassembled through the connecting grooves and the connecting blocks. The second buckle sleeve is longitudinally bisected into a left half part of the second buckle sleeve and a right half part of the second buckle sleeve. The left half part of the second buckle sleeve is provided with a plurality of connecting grooves, and the right half part of the second buckle sleeve is provided with a plurality of connecting blocks. The left half part of the second buckle sleeve and the right half part of the second buckle sleeve can be clamped or disassembled through the connecting grooves and the connecting blocks.

[0008] It also includes a first fixing sleeve and a second fixing sleeve. The sentence "The first buckle sleeve is sleeved on the first stay cable" is replaced with: The first fixing sleeve is closely sleeved on the first stay cable, and the first buckle sleeve is slidably sleeved on the first fixing sleeve. The sentence "The second buckle sleeve is sleeved on the second stay cable" is replaced with: The second fixing sleeve is closely sleeved on the second stay cable, and the second buckle sleeve is slidably sleeved on the second fixing sleeve.

[0009] Further, lubricating oil is provided between the first buckle sleeve and the first fixing sleeve, and lubricating oil is provided between the second buckle sleeve and the second fixing sleeve.

[0010] Further, the first buckle sleeve is longitudinally equally divided and cut open, divided into a left half part of the first buckle sleeve and a right half part of the first buckle sleeve. The left half part of the first buckle sleeve is provided with a plurality of connecting grooves, and the right half part of the first buckle sleeve is provided with a plurality of connecting blocks. The left half part and the right half part of the first buckle sleeve can be clamped or disassembled through the connecting grooves and the connecting blocks; the second buckle sleeve is longitudinally equally divided and cut open, divided into a left half part of the second buckle sleeve and a right half part of the second buckle sleeve. The left half part of the second buckle sleeve is provided with a plurality of connecting grooves, and the right half part of the second buckle sleeve is provided with a plurality of connecting blocks. The left half part and the right half part of the second buckle sleeve can be clamped or disassembled through the connecting grooves and the connecting blocks; the first fixing sleeve is longitudinally equally divided and cut open, divided into a left half part of the first fixing sleeve and a right half part of the first fixing sleeve. The left half part of the first fixing sleeve is provided with a plurality of connecting grooves, and the right half part of the first fixing sleeve is provided with a plurality of connecting blocks. The left half part and the right half part of the first fixing sleeve can be clamped or disassembled through the connecting grooves and the connecting blocks; the second fixing sleeve is longitudinally equally divided and cut open, divided into a left half part of the second fixing sleeve and a right half part of the second fixing sleeve. The left half part of the second fixing sleeve is provided with a plurality of connecting grooves, and the right half part of the second fixing sleeve is provided with a plurality of connecting blocks. The left half part and the right half part of the second fixing sleeve can be clamped or disassembled through the connecting grooves and the connecting blocks.

[0011] Further, annular baffles are respectively arranged at the bottom ends of the first fixing sleeve and the second fixing sleeve to prevent the first buckle sleeve from falling off from the bottom end of the first fixing sleeve and prevent the second buckle sleeve from falling off from the bottom end of the second fixing sleeve.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects: When the double-span stay cable undergoes wind-induced vibration, dynamic relative displacement will occur between the first stay cable and the second stay cable, and the distance between the first stay cable and the second stay cable continuously changes. The telescopic rod is connected between the first buckle sleeve and the second buckle sleeve. During the process of the change in the distance between the first stay cable and the second stay cable, the piston continuously slides inside the telescopic sleeve, and the kinetic energy of the wind-induced vibration of the first stay cable and the second stay cable is reduced through the friction energy consumption during the sliding process of the piston, thereby achieving the effect of vibration reduction.

[0013] During the construction stage of the double-span stay cable, the stay cable has not been fully tensioned in place, and the dynamic characteristics of the stay cable are significantly different from the completed bridge state, resulting in the inapplicability of the existing dampers to the construction stage of the double-span stay cable. However, the present invention does not require determining precise design parameters. By using the sliding friction energy consumption of the piston inside the telescopic sleeve to reduce the kinetic energy of the wind-induced vibration, the first buckle sleeve and the second buckle sleeve can be respectively sleeved on the first stay cable and the second stay cable to produce an effect, which is convenient to use and more suitable for the construction stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall connection structure diagram of the present invention.

[0015] Figure 2 Disassembly diagram of the left half of the first buckle sleeve and the left half of the first fixing sleeve.

[0016] Figure 3 Disassembly diagram of the right half of the first buckle sleeve and the right half of the first fixing sleeve.

[0017] Figure 4 Cross-sectional structure diagram of the telescopic rod.

[0018] Figure 5 Displacement time history diagram of the stay cable in the plane.

[0019] Figure 6 Displacement time history diagram of the stay cable out of the plane.

[0020] The explanations of each label in the figure are as follows: 1 - the first stay cable, 2 - the second stay cable, 3 - the first buckle sleeve, 4 - the second buckle sleeve, 5 - the first fixing sleeve, 6 - the second fixing sleeve, 7 - the connecting groove, 8 - the connecting block, 9 - the telescopic rod, 91 - the telescopic sleeve, 92 - the telescopic slide rod, 93 - the piston, 94 - the stop block, 10 - the baffle. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought.

[0022] Embodiment 1 As Figure 1 , Figure 4 shown, a vibration damping device for a double-span stay cable, the double-span stay cable includes a first stay cable 1 and a second stay cable 2, includes a first buckle sleeve 3 and a second buckle sleeve 4, the first buckle sleeve 3 is sleeved on the first stay cable 1, and the second buckle sleeve 4 is sleeved on the second stay cable 2; further includes more than one telescopic rod 9; the telescopic rod 9 includes a telescopic sleeve 91 and a telescopic slide rod 92; one end of the telescopic sleeve 91 is connected to the first buckle sleeve 3, and one end of the telescopic slide rod 92 is connected to the second buckle sleeve 4; alternatively, one end of the telescopic sleeve 91 is connected to the second buckle sleeve 4, and one end of the telescopic slide rod 92 is connected to the first buckle sleeve 3; the other end of the telescopic slide rod 92 is provided with a piston 93, and the piston 93 is inserted into the telescopic sleeve 91 from the other end of the telescopic sleeve 91; a stop block 94 for preventing the piston 93 from sliding out of the telescopic sleeve 91 is further provided at the other end of the telescopic sleeve 91.

[0023] In the present invention, a first buckle sleeve 3 and a second buckle sleeve 4 are respectively sleeved on the first stay cable 1 and the second stay cable 2, and then the first buckle sleeve 3 and the second buckle sleeve 4 are connected by a telescopic rod 9. The telescopic rod 9 includes a telescopic sleeve 91 and a telescopic slide rod 92. A piston 93 is arranged on the telescopic slide rod 92. The piston 93 is slidably connected inside the telescopic sleeve 91. The piston 93 has a relatively high coefficient of friction and is slidably connected to the inner wall of the telescopic sleeve 91. The friction generated during the sliding process will consume the kinetic energy during the telescopic process, which is the same as the principle of conventional damping energy dissipation. When the double stay cables undergo wind-induced vibration, the first stay cable 1 and the second stay cable 2 will generate dynamic relative displacements. The distance between the first stay cable 1 and the second stay cable 2 continuously changes. The telescopic rod 9 is connected between the first buckle sleeve 3 and the second buckle sleeve 4. During the process of the distance change between the first stay cable 1 and the second stay cable 2, the piston 93 continuously slides inside the telescopic sleeve 91. The kinetic energy of the wind-induced vibration of the first stay cable 1 and the second stay cable 2 is reduced by the friction energy dissipation of the piston 93 during the sliding process, thereby achieving the effect of vibration reduction. When a single stay cable in the double stay cables vibrates, or when both the first stay cable 1 and the second stay cable 2 vibrate, dynamic relative displacements will be generated between the first stay cable 1 and the second stay cable 2. In practice, the situation where the first stay cable 1 and the second stay cable 2 vibrate synchronously basically does not occur. During the actual implementation of the double stay cables, it more often shows that one stay cable undergoes obvious wind-induced vibration while the other stay cable vibrates weakly. This phenomenon can be explained as follows in addition to the fact that the stay cables are not fully tensioned during the construction stage: for the case of two stay cables arranged side by side, it is equivalent to the classic "flow around two cylinders" problem. The flow around two cylinders has been widely studied, and its characteristic is that the aerodynamic behaviors of the two cylinders are significantly different. Due to the phase difference of the aerodynamic force time history, the wind-induced vibrations of the two cylinders are asynchronous. In the background cases, it is also indeed found that the wind-induced phenomena of adjacent two stay cables are inconsistent and asynchronous. Due to the difference in vibration, the present invention utilizes the asynchronous phenomenon of the wind-induced vibration behaviors of the two stay cables, and relies on the stay cable with a small vibration amplitude to restrain the stay cable with a large vibration amplitude to improve the wind-induced vibration problem of the stay cables. The telescopic sleeve 91 is provided with a stop block 94 for preventing the piston 93 from sliding out of the telescopic sleeve 91; the stop block 94 is arranged at one end of the telescopic sleeve 91 away from the first buckle sleeve 3. The number of the telescopic rods 9 is more than one. When there are more than one, the connection direction of the latter telescopic rod 9 can be opposite to that of the previous telescopic rod 9.

[0024] During the construction stage, since conventional dampers need to determine design parameters, and the stay cables are not fully tensioned during the construction stage, resulting in significant differences in the dynamic characteristics of the stay cables from the completed bridge state, conventional dampers are not applicable to the stay cables during the construction stage. The present invention does not need to determine the frequency information of the stay cables, but uses the objective phenomenon of asynchronous vibration of adjacent two stay cables for vibration reduction, so it is more suitable for the stay cables during the construction stage than conventional dampers.

[0025] Further, the first buckle sleeve 3 is longitudinally equally divided and cut open into a left half part and a right half part of the first buckle sleeve. The left half part of the first buckle sleeve is provided with a plurality of connecting grooves 7, and the right half part of the first buckle sleeve is provided with a plurality of connecting blocks 8. The left half part and the right half part of the first buckle sleeve can be clamped or disassembled through the connecting grooves 7 and the connecting blocks 8. The second buckle sleeve 4 is longitudinally equally divided and cut open into a left half part and a right half part of the second buckle sleeve. The left half part of the second buckle sleeve is provided with a plurality of connecting grooves 7, and the right half part of the second buckle sleeve is provided with a plurality of connecting blocks 8. The left half part and the right half part of the second buckle sleeve can be clamped or disassembled through the connecting grooves 7 and the connecting blocks 8. The first buckle sleeve 3 and the second buckle sleeve 4 can be formed into two parts along the longitudinal section, and the clamping or disassembly is completed through the connecting grooves 7 and the connecting blocks 8 arranged at the section position, so as to install or disassemble the first buckle sleeve 3 and the second buckle sleeve 4 from the side of the first stay cable 1 or the second stay cable 2, which is convenient for construction.

[0026] Embodiment 2 As Figures 1-4 shown, a vibration damping device for a double-span stay cable. The double-span stay cable includes a first stay cable 1 and a second stay cable 2, and includes a first buckle sleeve 3 and a second buckle sleeve 4. The first buckle sleeve 3 is sleeved on the first stay cable 1, and the second buckle sleeve 4 is sleeved on the second stay cable 2. It further includes more than one telescopic rod 9. The telescopic rod 9 includes a telescopic sleeve 91 and a telescopic slide rod 92. One end of the telescopic sleeve 91 is connected to the first buckle sleeve 3, and one end of the telescopic slide rod 92 is connected to the second buckle sleeve 4. Alternatively, one end of the telescopic sleeve 91 is connected to the second buckle sleeve 4, and one end of the telescopic slide rod 92 is connected to the first buckle sleeve 3. The other end of the telescopic slide rod 92 is provided with a piston 93, and the piston 93 is inserted into the telescopic sleeve 91 from the other end of the telescopic sleeve 91. A stop block 94 for preventing the piston 93 from sliding out of the telescopic sleeve 91 is further arranged at the other end of the telescopic sleeve 91. It further includes a first fixing sleeve and a second fixing sleeve. The description that the first buckle sleeve is sleeved on the first stay cable is replaced with: the first fixing sleeve is tightly sleeved on the first stay cable, and the first buckle sleeve is slidably sleeved on the first fixing sleeve. The description that the second buckle sleeve is sleeved on the second stay cable is replaced with: the second fixing sleeve is tightly sleeved on the second stay cable, and the second buckle sleeve is slidably sleeved on the second fixing sleeve.

[0027] The slidable sleeve means that the first buckle sleeve slides axially and circumferentially relative to the first fixing sleeve. The tight sleeve means that the first fixing sleeve is sleeved on the first stay cable without relative sliding therebetween.

[0028] During the wind-induced vibration of the first stay cable 1 and the second stay cable 2, there is not only horizontal vibration, but more vertically. The vertical vibrations of the first stay cable 1 and the second stay cable 2 are not synchronous, which causes the telescopic rod 9 to deflect at an angle during the energy dissipation and vibration reduction process. The angular deflection of the telescopic rod 9 causes the first buckle sleeve 3 and the second buckle sleeve 4 to rotate circumferentially to adapt to the angle of the telescopic rod 9. Due to the rough surfaces of the first stay cable 1 and the second stay cable 2, the rotation of the first buckle sleeve 3 and the second buckle sleeve 4 is not smooth. Therefore, the first fixing sleeve 5 and the second fixing sleeve 6 are added. The inner walls of the first fixing sleeve 5 and the second fixing sleeve 6 are respectively attached to the surfaces of the first stay cable 1 and the second stay cable 2. Due to the large friction, relative rotation and relative sliding usually do not occur; while the outer walls of the first fixing sleeve 5 and the second fixing sleeve 6, and the inner walls of the first buckle sleeve 3 and the second buckle sleeve 4 are smooth, and the process of relative sliding of the first buckle sleeve 3 and the second buckle sleeve 4 on the outer walls of the first fixing sleeve 5 and the second fixing sleeve 6 is relatively smooth, making the energy dissipation and vibration reduction process of the telescopic rod 9 more smooth and the vibration reduction quality higher.

[0029] Furthermore, lubricating oil is provided between the first buckle sleeve 3 and the first fixing sleeve 5, and lubricating oil is provided between the second buckle sleeve 4 and the second fixing sleeve 6. The lubricating oil further increases the smoothness of the process of relative sliding of the first buckle sleeve 3 and the second buckle sleeve 4 on the outer walls of the first fixing sleeve 5 and the second fixing sleeve 6.

[0030] Such as Figure 2 , Figure 3As shown in the figure, further, the first buckle sleeve 3 is longitudinally equally divided and cut open, divided into a left half part of the first buckle sleeve and a right half part of the first buckle sleeve. The left half part of the first buckle sleeve is provided with a plurality of connecting grooves 7, and the right half part of the first buckle sleeve is provided with a plurality of connecting blocks 8. The left half part and the right half part of the first buckle sleeve can be clamped or disassembled through the connecting grooves 7 and the connecting blocks 8; the second buckle sleeve 4 is longitudinally equally divided and cut open, divided into a left half part of the second buckle sleeve and a right half part of the second buckle sleeve. The left half part of the second buckle sleeve is provided with a plurality of connecting grooves 7, and the right half part of the second buckle sleeve is provided with a plurality of connecting blocks 8. The left half part and the right half part of the second buckle sleeve can be clamped or disassembled through the connecting grooves 7 and the connecting blocks 8; the first fixing sleeve 5 is longitudinally equally divided and cut open, divided into a left half part of the first fixing sleeve and a right half part of the first fixing sleeve. The left half part of the first fixing sleeve is provided with a plurality of connecting grooves 7, and the right half part of the first fixing sleeve is provided with a plurality of connecting blocks 8. The left half part and the right half part of the first fixing sleeve can be clamped or disassembled through the connecting grooves 7 and the connecting blocks 8; the second fixing sleeve 6 is longitudinally equally divided and cut open, divided into a left half part of the second fixing sleeve and a right half part of the second fixing sleeve. The left half part of the second fixing sleeve is provided with a plurality of connecting grooves 7, and the right half part of the second fixing sleeve is provided with a plurality of connecting blocks 8. The left half part and the right half part of the second fixing sleeve can be clamped or disassembled through the connecting grooves 7 and the connecting blocks 8. The above structural relationship means that the first buckle sleeve 3, the second buckle sleeve 4, the first fixing sleeve 5 and the second fixing sleeve 6 can all be formed into two parts along the longitudinal section, and the clamping or disassembly is completed through the connecting grooves 7 and the connecting blocks 8 arranged at the section position. The purpose is to install or disassemble the first buckle sleeve 3, the second buckle sleeve 4, the first fixing sleeve 5 and the second fixing sleeve 6 from the side of the first stay cable 1 or the second stay cable 2, which is convenient for construction. In the above connection, the connecting grooves 7 and the connecting blocks 8 have sufficient strength after being clamped, and the telescopic rod 9 will not cause the connecting grooves 7 and the connecting blocks 8 to separate due to pulling the first stay cable 1 and the second stay cable 2 during the process of telescopic energy consumption.

[0031] Further, annular baffles 10 are respectively arranged at the bottom ends of the first fixing sleeve 5 and the second fixing sleeve 6 to prevent the first buckle sleeve 3 from falling off from the bottom end of the first fixing sleeve 5 and prevent the second buckle sleeve 4 from falling off from the bottom end of the second fixing sleeve 6. During the rotation process of the first buckle sleeve 3 and the second buckle sleeve 4, it is also easy to slide axially. Therefore, annular baffles 10 are respectively arranged at the bottom ends of the first fixing sleeve 5 and the second fixing sleeve 6 to prevent the first buckle sleeve 3 from falling off from the bottom end of the first fixing sleeve 5 and prevent the second buckle sleeve 4 from falling off from the bottom end of the second fixing sleeve 6. The double-span stay cables are inclined during use, so they are called stay cables, and the inclination angle is relatively large, so there is no need to worry about the first buckle sleeve 3 falling off from the top end of the first fixing sleeve 5. The annular baffles 10 are also longitudinally cut into two parts and are respectively installed at the bottom of the left half part of the first fixing sleeve 5 and the bottom of the right half part of the first fixing sleeve 5.

[0032] Generally speaking, the present invention can be quickly installed without affecting the construction progress, and has high adaptability, being able to adapt to tandem double-plane stay cables with different diameters and different spacings; effectively solves the problems of the change of the vibration frequency of the stay cable during the construction process and the change of the dominant mode during the wind-induced vibration process, and is effective for the wind-induced vibration occurring in different modes of the stay cable; also has construction compatibility and does not affect the subsequent installation of permanent dampers and anti-corrosion construction.

[0033] Regarding the vibration reduction effect of the present invention, the following experimental data are provided: Taking a certain stay cable as an example, its wind-induced response was calculated. The in-plane displacement of the stay cable is the displacement generated by the vertical vibration of the stay cable, and the out-of-plane displacement of the stay cable is the displacement generated by the lateral vibration of the stay cable.

[0034] Without the present invention, the time history of the mid-span displacement of the stay cable is as Figure 5 、 Figure 6 shown by the black line in the figure. The root mean square errors (RMSE) of the in-plane and out-of-plane displacements of the stay cable are 0.053 m and 0.070 m respectively. After setting the present invention, the root mean square errors of the in-plane and out-of-plane displacements of the mid-span of the stay cable are reduced to 0.026 m and 0.035 m respectively.

[0035] The "connection" and "fixation" appearing in the description of the present invention can be fixed connection, machining, welding, or mechanical connection. Understand the specific meanings of the above terms in the present invention according to the specific situation.

[0036] In the description of the present invention, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element must have. Therefore, it cannot be understood as a limitation to the present invention.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration reduction device for a double-width inclined cable, the double-width inclined cable comprising a first inclined cable (1) and a second inclined cable (2), characterized in that: It comprises a first buckle sleeve (3) and a second buckle sleeve (4), wherein the first buckle sleeve (3) is sleeved on the first inclined cable (1), and the second buckle sleeve (4) is sleeved on the second inclined cable (2); The invention also comprises one or more telescopic rods (9); the telescopic rods (9) comprise a telescopic sleeve (91) and a telescopic slide rod (92); one end of the telescopic sleeve (91) is connected to the first buckle sleeve (3), and one end of the telescopic slide rod (92) is connected to the second buckle sleeve (4); or one end of the telescopic sleeve (91) is connected to the second buckle sleeve (4), and one end of the telescopic slide rod (92) is connected to the first buckle sleeve (3); a piston (93) is arranged at the other end of the telescopic slide rod (92), and the piston (93) is inserted into the telescopic sleeve (91) from the other end of the telescopic sleeve (91); and a stopper (94) is also arranged at the other end of the telescopic sleeve (91) to prevent the piston (93) from sliding out of the telescopic sleeve (91).

2. The vibration reduction device for double-width stay cables according to claim 1, characterized in that: The first buckle sleeve (3) is split into equal parts along the longitudinal direction, into a first buckle sleeve left half and a first buckle sleeve right half, the first buckle sleeve left half is provided with a plurality of connection grooves (7), and the first buckle sleeve right half is provided with a plurality of connection blocks (8), and the first buckle sleeve left half and the first buckle sleeve right half can be engaged or disassembled through the connection grooves (7) and the connection blocks (8); The second buckle sleeve (4) is split into equal parts along the longitudinal direction, into a second buckle sleeve left half and a second buckle sleeve right half. The second buckle sleeve left half is provided with a plurality of connection grooves (7), and the second buckle sleeve right half is provided with a plurality of connection blocks (8). The second buckle sleeve left half and the second buckle sleeve right half can be engaged or disassembled through the connection grooves (7) and the connection blocks (8).

3. The vibration reduction device for double-width stay cables according to claim 1, characterized in that: It also includes a first fixing sleeve (5) and a second fixing sleeve (6); the first buckle sleeve (3) is sleeved on the first inclined cable (1), and is replaced by: the first fixing sleeve (5) is tightly sleeved on the first inclined cable (1), and the first buckle sleeve (3) is slidably sleeved on the first fixing sleeve (5); The second buckle sleeve (4) is sleeved on the second inclined cable (2), and is replaced by: a second fixing sleeve (6) tightly sleeved on the second inclined cable (2), and the second buckle sleeve (4) is slidably sleeved on the second fixing sleeve (6).

4. The vibration reduction device for double-width stay cables according to claim 3 is characterized in that: Lubricating oil is provided between the first buckle sleeve (3) and the first fixing sleeve (5), and lubricating oil is provided between the second buckle sleeve (4) and the second fixing sleeve (6).

5. The vibration reduction device for double-width stay cables according to claim 3, characterized in that: The first buckle sleeve (3) is split into equal parts along the longitudinal direction, into a first buckle sleeve left half and a first buckle sleeve right half, the first buckle sleeve left half is provided with a plurality of connection grooves (7), and the first buckle sleeve right half is provided with a plurality of connection blocks (8), and the first buckle sleeve left half and the first buckle sleeve right half can be engaged or disassembled through the connection grooves (7) and the connection blocks (8); The second buckle sleeve (4) is split into equal parts along the longitudinal direction, into a second buckle sleeve left half and a second buckle sleeve right half, the second buckle sleeve left half is provided with a plurality of connection grooves (7), and the second buckle sleeve right half is provided with a plurality of connection blocks (8), and the second buckle sleeve left half and the second buckle sleeve right half can be engaged or disassembled through the connection grooves (7) and the connection blocks (8); The first fixing sleeve (5) is equally divided along the longitudinal direction into a first fixing sleeve left half and a first fixing sleeve right half, the first fixing sleeve left half is provided with a plurality of connection grooves (7), and the first fixing sleeve right half is provided with a plurality of connection blocks (8), and the first fixing sleeve left half and the first fixing sleeve right half can be engaged or disassembled through the connection grooves (7) and the connection blocks (8); The second fixing sleeve (6) is equally divided along the longitudinal direction into a second fixing sleeve left half and a second fixing sleeve right half. The second fixing sleeve left half is provided with a plurality of connection grooves (7), and the second fixing sleeve right half is provided with a plurality of connection blocks (8). The second fixing sleeve left half and the second fixing sleeve right half can be engaged or disassembled through the connection grooves (7) and the connection blocks (8).

6. The vibration reduction device for double-width stay cables according to claim 3, characterized in that: An annular baffle (10) is provided at the bottom ends of the first fixing sleeve (5) and the second fixing sleeve (6), respectively, to prevent the first buckle sleeve (3) from falling off from the bottom end of the first fixing sleeve (5), and to prevent the second buckle sleeve (4) from falling off from the bottom end of the second fixing sleeve (6).

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