CN215441459U

CN215441459U - Suspension bridge hoist cable vibration damper

Info

Publication number: CN215441459U
Application number: CN202122047469.9U
Authority: CN
Inventors: 陈强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-28
Filing date: 2021-08-28
Publication date: 2022-01-07
Anticipated expiration: 2031-08-28

Abstract

The utility model discloses a suspension bridge sling vibration damper which comprises two split cable hoops, wherein the outer walls of the two split cable hoops are fixedly connected with a first connecting plate and a second connecting plate through bolts respectively; when the vibration damping device is used, the two nuts are rotated through the connecting rod, the slide rod and the connecting rod can be driven to move by utilizing the matching of the nuts and the two external threads with opposite thread directions, so that the spacing distance of the two split cable hoops is adjusted to be matched with two adjacent slings with different spacing distances, when the two split cable hoops are respectively fixed on the corresponding slings, and the spacing distance of the two split cable hoops is adjusted to be proper size, the nuts and the external threads are welded and fixed, the stability of the vibration damping device can be ensured, and the nuts are prevented from rotating on the external threads due to the vibration of the slings.

Description

Suspension bridge hoist cable vibration damper

Technical Field

The utility model relates to a vibration damper, in particular to a suspension bridge sling vibration damper.

Background

Suspension bridges, also known as suspension bridges (suspension bridges), refer to bridges with cables (or steel chains) suspended by pylons and anchored to both banks (or ends of the bridge) as the main load bearing members of the superstructure. The cable geometry is determined by the equilibrium condition of the forces, typically approaching a parabola. A plurality of suspension rods are suspended from the cable to suspend the deck, and stiffening beams are often disposed between the deck and the suspension rods to form a combined system with the cable to reduce deflection deformation caused by loading. The suspension cable of the old suspension bridge is generally an iron chain or an iron rod connected together, and the modern suspension cable is generally a multi-strand high-strength steel wire.

In order to reduce the influence of vibration on the suspension cable of the suspension bridge, a vibration damping device based on a tuned mass damper is usually installed on two adjacent suspension cables so as to effectively absorb the vibration of the suspension cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a suspension bridge sling damping device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a suspension bridge hoist cable vibration damper, includes two split type cable hoops, two the outer wall of split type cable hoop is respectively through first connecting plate of bolt fixedly connected with and second connecting plate, the outer wall fixedly connected with connecting rod of first connecting plate, the outer wall fixedly connected with slide bar of second connecting plate, the quality piece has been cup jointed in the outer wall slip of slide bar, second connecting plate and quality piece are connected with spring and viscous damper jointly, the one end of slide bar and connecting rod all has the nut, two through threaded connection the nut is through a plurality of connecting rod fixed connection.

As a further scheme of the utility model: the thread directions of the two external threads are opposite.

As a further scheme of the utility model: viscous damper includes the barrel, the one end of barrel is run through and is provided with the piston rod, barrel and piston rod sliding seal are connected, the fixed piston ring that has cup jointed of outer wall of piston rod, the inner wall sliding connection of piston ring and barrel, the outer wall of piston ring runs through and is provided with a plurality of oil through holes, the other end fixedly connected with dead lever of barrel.

As a further scheme of the utility model: the inner wall of the cylinder body is fixedly connected with a guide ring, the guide ring is sleeved on the piston rod, and the guide ring is connected with the piston rod in a sliding and sealing mode.

As a further scheme of the utility model: the piston ring and the guide ring divide the interior of the cylinder into a first oil cavity, a second oil cavity and an air cavity, and the first oil cavity is communicated with the second oil cavity through an oil through hole.

As a still further scheme of the utility model: the outer wall of the mass block is provided with two screw holes, the end part of the fixed rod is in threaded connection with the corresponding screw hole, one end of the piston rod is fixedly connected with the second connecting plate, one end of the spring is in threaded connection with the corresponding screw hole, and the other end of the spring is fixedly connected with the outer wall of the second connecting plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the vibration damping device is used, the two nuts are rotated through the connecting rod, the slide rod and the connecting rod can be driven to move by utilizing the matching of the nuts and the two external threads with opposite thread directions, so that the spacing distance of the two split cable hoops is adjusted to be matched with two adjacent slings with different spacing distances, when the two split cable hoops are respectively fixed on the corresponding slings, and the spacing distance of the two split cable hoops is adjusted to be proper size, the nuts and the external threads are welded and fixed, the stability of the vibration damping device can be ensured, and the nuts are prevented from rotating on the external threads due to the vibration of the slings.

2. When the suspension cable vibrates, the mass block can move back and forth on the sliding rod under the action of the viscous damper and the spring to provide large additional damping, so that the vibration of the suspension cable is reduced, when the viscous damper works, the piston ring can move back and forth in the cylinder body, so that damping oil flows between the first oil cavity and the second oil cavity through the oil through hole to provide damping, and meanwhile, the end part of the piston rod can move back and forth in the air cavity to increase or reduce the pressure in the air cavity, so that the piston ring can be quickly reset by utilizing the pressure change in the air cavity and the elasticity of the spring.

Drawings

Fig. 1 is a schematic structural diagram of a suspension bridge sling damping device.

Fig. 2 is a schematic structural diagram of a viscous damper in a suspension bridge sling damping device.

Fig. 3 is a schematic structural diagram of a screw hole in a suspension bridge sling damping device.

The device comprises a split type cable hoop 1, a first connecting plate 2, a second connecting plate 3, a connecting rod 4, a sliding rod 5, external threads 6, a nut 7, a connecting rod 8, a mass block 9, a spring 10, a viscous damper 11, a cylinder 12, a fixing rod 13, a piston rod 14, a piston ring 15, an oil through hole 16, a guide ring 17, a first oil cavity 18, a second oil cavity 19, an air cavity 20 and a screw hole 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the utility model, a suspension bridge sling vibration damper includes two split-type hoops 1, outer walls of the two split-type hoops 1 are respectively and fixedly connected with a first connecting plate 2 and a second connecting plate 3 through bolts, an outer wall of the first connecting plate 2 is fixedly connected with a connecting rod 4, an outer wall of the second connecting plate 3 is fixedly connected with a sliding rod 5, an outer wall of the sliding rod 5 is slidably sleeved with a mass block 9, the second connecting plate 3 and the mass block 9 are jointly connected with a spring 10 and a viscous damper 11, one ends of the sliding rod 5 and the connecting rod 4 are both connected with nuts 7 through external threads 6, and the two nuts 7 are fixedly connected through a plurality of connecting rods 8.

The two external threads 6 have opposite thread directions.

Viscous damper 11 includes barrel 12, the one end of barrel 12 is run through and is provided with piston rod 14,

barrel

12 and 14 sliding seal of piston rod are connected, piston ring 15 has been cup jointed to the outer wall of piston rod 14 is fixed, piston ring 15 and barrel 12's inner wall sliding connection, piston ring 15's outer wall is run through and is provided with a plurality of oil through holes 16, the other end fixedly connected with dead lever 13 of barrel 12.

The inner wall of the cylinder 12 is fixedly connected with a guide ring 17, the guide ring 17 is sleeved on the piston rod 14, and the guide ring 17 is connected with the piston rod 14 in a sliding and sealing manner.

The piston ring 15 and the guide ring 17 divide the interior of the cylinder 12 into a first oil chamber 18, a second oil chamber 19 and an air chamber 20, damping oil is filled in the first oil chamber 18 and the second oil chamber 19, and the first oil chamber 18 and the second oil chamber 19 are communicated through an oil through hole 16.

The outer wall of the mass block 9 is provided with two screw holes 21, the end part of the fixing rod 13 is in threaded connection with the corresponding screw hole 21, one end of the piston rod 14 is fixedly connected with the second connecting plate 3, one end of the spring 10 is in threaded connection with the corresponding screw hole 21, and the other end of the spring 10 is fixedly connected with the outer wall of the second connecting plate 3.

The working principle of the utility model is as follows:

when the vibration damping device is used, the two nuts 7 are rotated through the connecting rod 8, the slide rod 5 and the connecting rod 4 can be driven to move by utilizing the matching of the nuts 7 and the two external threads 6 with opposite thread directions, so that the spacing distance of the two split-type cable hoops 1 is adjusted to be matched with two adjacent slings with different spacing distances, when the two split-type cable hoops 1 are respectively fixed on the corresponding slings, and the spacing distance of the two split-type cable hoops 1 is adjusted to be in a proper size, the nuts 7 and the external threads 6 are welded and fixed, the stability of the vibration damping device can be ensured, and the nuts 7 are prevented from rotating on the external threads 6 due to the vibration of the slings.

In the utility model, when the sling vibrates, the mass block 9 can move back and forth on the slide rod 5 under the action of the viscous damper 11 and the spring 10 to provide larger additional damping so as to relieve the vibration of the sling, when the viscous damper 11 works, the piston ring 15 can move back and forth in the cylinder 12 so as to enable damping oil to flow between the first oil cavity 18 and the second oil cavity 19 through the oil through hole 16 so as to provide damping, and simultaneously, the end part of the piston rod 14 can move back and forth in the air cavity 20 so as to enable the pressure in the air cavity 20 to be increased or reduced, so that the piston ring 15 can be rapidly reset by utilizing the pressure change in the air cavity 20 and the elasticity of the spring 10.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a suspension bridge hoist cable vibration damper which characterized in that: including two split type cable hoop (1), two the outer wall of split type cable hoop (1) is respectively through first connecting plate (2) of bolt fixedly connected with and second connecting plate (3), outer wall fixedly connected with connecting rod (4) of first connecting plate (2), outer wall fixedly connected with slide bar (5) of second connecting plate (3), quality piece (9) have been cup jointed in the outer wall slip of slide bar (5), second connecting plate (3) and quality piece (9) are connected with spring (10) and viscous damper (11) jointly, the one end of slide bar (5) and connecting rod (4) all is connected with nut (7), two through external screw thread (6) nut (7) are through a plurality of connecting rod (8) fixed connection.

2. A suspension bridge fall dampening arrangement as claimed in claim 1, wherein: the thread directions of the two external threads (6) are opposite.

3. A suspension bridge fall dampening arrangement as claimed in claim 1, wherein: viscous damper (11) include barrel (12), the one end of barrel (12) is run through and is provided with piston rod (14), barrel (12) and piston rod (14) sliding seal are connected, piston ring (15) have been cup jointed to the outer wall of piston rod (14) is fixed, the inner wall sliding connection of piston ring (15) and barrel (12), the outer wall of piston ring (15) runs through and is provided with a plurality of logical oilhole (16), the other end fixedly connected with dead lever (13) of barrel (12).

4. A suspension bridge fall damper as claimed in claim 3, wherein: the inner wall of the cylinder body (12) is fixedly connected with a guide ring (17), the guide ring (17) is sleeved on the piston rod (14), and the guide ring (17) is connected with the piston rod (14) in a sliding and sealing mode.

5. The suspension bridge fall dampening device of claim 4, wherein: the piston ring (15) and the guide ring (17) divide the interior of the cylinder body (12) into a first oil chamber (18), a second oil chamber (19) and an air chamber (20), and the first oil chamber (18) is communicated with the second oil chamber (19) through an oil through hole (16).

6. A suspension bridge fall damper as claimed in claim 3, wherein: two screw holes (21) are formed in the outer wall of the mass block (9), the end portion of the fixing rod (13) is in threaded connection with the corresponding screw hole (21), one end of the piston rod (14) is fixedly connected with the second connecting plate (3), one end of the spring (10) is in threaded connection with the corresponding screw hole (21), and the other end of the spring (10) is fixedly connected with the outer wall of the second connecting plate (3).