CN-121976704-A - Steel wire rope-viscoelastic body composite multidirectional vibration isolation and reduction device and method

CN121976704ACN 121976704 ACN121976704 ACN 121976704ACN-121976704-A

Abstract

The invention discloses a steel wire rope-viscoelastic body composite multidirectional vibration isolation and reduction device and a method. The device comprises a steel wire rope vibration isolation device, a viscoelastic body, an upper connecting plate, a lower connecting plate, an adjusting cushion block and a high-strength bolt, wherein the viscoelastic body is integrally formed on the steel wire rope vibration isolation device through a vulcanization process, covers the outside of the viscoelastic body and is filled in an inner side space and an outer side space of the steel wire rope, a spiral winding pitch gap and end gaps of the steel wire rope, the upper clamping plate and the lower clamping plate to form a combined body, the upper connecting plate and the lower connecting plate are respectively arranged on the upper side and the lower side of the combined body, the adjusting cushion block is arranged between the combined body and the upper connecting plate and the lower connecting plate, and the upper connecting plate, the upper adjusting cushion block, the combined body, the lower adjusting cushion block and the lower connecting plate are locked in series through the high-strength bolt. The composite multidirectional vibration isolation and reduction device cooperatively exerts the characteristics of high bearing capacity and low dynamic stiffness of the steel wire rope vibration isolation and reduction device, has excellent energy dissipation, corrosion resistance and high-frequency vibration isolation performance of an external viscoelastic body, and can meet different vibration isolation and reduction requirements.

Inventors

XU ZHAODONG
Ran Fengfeng
HUANG XINGHUAI
SONG JINGBO
WANG LIXIN

Assignees

东南大学
东南大学深圳研究院
深圳防灾减灾技术研究院

Dates

Publication Date: 20260505
Application Date: 20251223

Claims (10)

1. A wire rope-viscoelastic body composite multidirectional vibration isolating and damping device, comprising: The steel wire rope vibration isolation damper consists of an upper clamping plate, a lower clamping plate and a steel wire rope spirally wound between the upper clamping plate and the lower clamping plate; The viscoelastic body is integrally formed on the steel wire rope vibration isolation damper through a vulcanization process, is coated outside the viscoelastic body and is filled in an inner space and an outer space of the steel wire rope (33), a pitch gap of spiral winding and end gaps of the steel wire rope, the upper clamping plate (31) and the lower clamping plate (32) to form a combined body; the upper connecting plate (1) and the lower connecting plate are respectively arranged at the upper side and the lower side of the combination body; The adjusting cushion block is arranged between the assembly and the upper connecting plate and the lower connecting plate and is used for adjusting the mechanical property of the steel wire rope shock isolation absorber under large deformation so as to adapt to different shock isolation and absorption requirements; The upper connecting plate (1), the upper adjusting cushion block and the upper side of the combination body are locked in series through a first detachable locking mechanism, the lower connecting plate, the lower adjusting cushion block and the lower side of the combination body are locked in series through a second detachable locking mechanism, and after the locking, the axis of the upper adjusting cushion block, the central axis of the combination body and the axis of the lower adjusting cushion block are collinear.
2. The rope-viscoelastic body composite multidirectional vibration damping device according to claim 1, wherein the upper clamping plate and the lower clamping plate are connected through a pre-tightening mechanism, so that the upper clamping plate, the rope and the lower clamping plate are locked into a whole.
3. The steel wire rope-viscoelastic body composite multidirectional vibration isolating and damping device according to claim 2, wherein the pre-tightening mechanism comprises a pre-tightening bolt, a through hole for the pre-tightening bolt to pass through is formed in the upper clamping plate, and a threaded hole matched with the pre-tightening bolt is formed in the lower clamping plate.
4. The rope-viscoelastic body composite multidirectional vibration isolating device as in claim 1, in which the first and second removable locking mechanisms are high strength bolts.
5. The rope-viscoelastic body composite multidirectional vibration isolating device as defined in claim 1, wherein the rope is wound to form a round or oval shape, each ring of the rope is composed of a half vertical semicircle and the other half inclined semicircle, the inclined semicircle provides reliable rigidity for longitudinal deformation of the rope vibration isolating device, the vertical semicircle and the inclined semicircle together provide vertical tension and compression rigidity for the rope vibration isolating device, and the radial rigidity of the rope vibration isolating device is provided by each ring of the rope.
6. The rope-viscoelastic body composite multidirectional vibration isolating device as defined in claim 1, wherein the thickness of the viscoelastic body vulcanized and coated on both sides of the rope is 3-10mm, so as to restrict the deformation of the rope and prevent damage to the rope caused by external impact factors; The thickness of the viscoelastic body is 6-10mm higher than the diameter of the steel wire rope at the pitch of spiral winding of the steel wire rope, and the viscoelastic body is filled to the pitch of the two ends of the steel wire rope and exceeds the plate surfaces of the upper clamping plate and the lower clamping plate by 3-5mm, so that a viscoelastic part is formed at the end part, and damage to the steel wire rope caused by external impact factors is prevented.
7. The wire rope-viscoelastic body composite multidirectional vibration isolating device as defined in claim 1, wherein threaded holes for connecting the wire rope vibration isolating device and through holes or threaded holes for connecting with an external structure are reserved on the upper connecting plate and the lower connecting plate respectively.
8. A method of manufacturing and assembling a wire rope-viscoelastic body composite multidirectional vibration isolating device as in any one of claims 1-7, comprising the steps of: S1, preparing a steel wire rope vibration isolation damper, positioning an upper clamping plate and a lower clamping plate by using a clamp, sequentially penetrating a steel wire rope through steel wire rope holes reserved on the upper clamping plate and the lower clamping plate under constant tension, spirally winding, and then locking and forming; s2, vulcanizing the viscoelastic body, putting the steel wire rope vibration isolation damper manufactured in the step S1 and the rubber compound into a die together, vulcanizing under high temperature and high pressure conditions to enable the rubber compound to form the viscoelastic body wrapping the periphery of the steel wire rope vibration isolation damper, and completely bonding the viscoelastic body, the steel wire rope, an upper clamping plate and a lower clamping plate to form the combined body; And S3, assembling the vibration isolation and reduction device, namely placing an upper adjusting cushion block on the upper side of the combination body in the step S2, placing a lower adjusting cushion block on the lower side of the combination body, and then connecting and fixing an upper connecting plate, the upper adjusting cushion block, the combination body, a lower adjusting cushion block and a lower connecting plate through high-strength bolts.
9. A vibration damping method of a steel wire rope-viscoelastic body composite multidirectional vibration isolation device as claimed in any one of claims 1 to 7, wherein under vibration excitation, the device consumes energy in a synergistic manner through bending deformation of the steel wire rope and shearing, pulling and pressing deformation of the viscoelastic material, so as to realize multidirectional vibration isolation; Meanwhile, the mechanical properties of the steel wire rope shock isolation damper under large deformation are adjusted through the adjusting cushion blocks with different thicknesses, so that different shock isolation and absorption requirements are met.
10. The vibration-damping method of a wire rope-viscoelastic body composite multidirectional vibration-damping device according to claim 9, wherein the wire rope vibration-damping device is made to follow preset and different deformation paths in the compression deformation process by setting different adjusting pad thicknesses, and the deformation paths are determined according to the adjusting pad thicknesses in the following manner: (1) When t shim =0, during compression deformation, the wire rope vibration damper will enter a deformed state in which the laterally bulged portion thereof is in contact with the upper or lower connecting plate; (2) When 0<t shim is less than or equal to R/2, in the compression deformation process, the steel wire rope vibration isolation damper firstly enters a state that the steel wire rope generates a negative curvature deformation form, and then enters a state that a lateral bulge part of the steel wire rope is contacted with the upper connecting plate or the lower connecting plate; (3) When t shim is more than R/2, the steel wire rope vibration isolation damper enters a state that the steel wire rope (33) generates a negative curvature deformation form in the compression deformation process; wherein t shim is the thickness of the adjusting cushion block, and R is the radius of the steel wire rope vibration isolation damper.

Description

Steel wire rope-viscoelastic body composite multidirectional vibration isolation and reduction device and method Technical Field The invention belongs to the field of civil engineering vibration, and relates to a steel wire rope-viscoelastic body composite multidirectional vibration isolation and reduction device and method. Background Conventional wire rope vibration dampers expose several performance limitations in practical applications, First, damping characteristic can show the decline under specific operating mode, when shock absorber bears great compressive deformation, wire rope easily produces the hair-growing and looses, leads to the forward restriction force between the fag end to weaken, and the interrope frictional force that is main power consumption mechanism also reduces consequently, has weakened energy dissipation effect. Secondly, torsion deflection is caused by the inherent influence of the winding process, unstable torsion deflection can be generated under the condition of large deformation of the shock absorber, and the structure can deflect to one side of the crossed inclined steel wire rope, so that the working precision and the gesture stability of the shock absorber are affected. Third, the isolation capability of high frequency micro-amplitude vibration is poor, under such vibration, the friction force between ropes is not activated or does not respond to the rapid change of the vibration direction due to the small amplitude, so that a 'locking effect' appears, the isolation damper becomes a rigid connector almost, and the high frequency vibration energy is transmitted almost without attenuation. Fourth, the durability is poor, the effect of the traditional anti-corrosion measures relying on lubricating oil can be attenuated with time, and meanwhile, the continuous friction between steel wire ropes can increase the material abrasion while providing damping, so that the corrosion resistance is reduced, and the fatigue resistance and the long-term service life of the steel wire ropes are also a serious challenge. Fifthly, the power response is aggravated, and most of the wire rope vibration isolation dampers are directly connected with the connecting plate or the outside during assembly, so that the wire rope vibration isolation dampers deform among the plates under large deformation, the system rigidity is greatly increased, and the power response is aggravated. Sixth, once the traditional passive wire rope vibration isolation damper is produced, the performance is not changed any more, so that the passive wire rope vibration isolation damper has no applicability in occasions needing adjustment. Disclosure of Invention In view of the above-mentioned prior art problems, an object of the present invention is to provide a wire rope-viscoelastic body composite multidirectional vibration isolation and reduction device and method, which can be used for solving the problems of insufficient damping, insufficient high-frequency vibration control, non-adjustable performance and multidirectional unstable vibration isolation and reduction in the prior art by innovatively combining a viscoelastic material with a wire rope vibration isolation and reduction device. To achieve the above and other related objects, the present invention adopts the following technical means: A wire rope-viscoelastic body composite multidirectional vibration isolating and damping device, comprising: The steel wire rope vibration isolation damper consists of an upper clamping plate, a lower clamping plate and a steel wire rope spirally wound between the upper clamping plate and the lower clamping plate; The viscoelastic body is integrally formed on the steel wire rope vibration isolation damper through a vulcanization process, is coated outside the steel wire rope vibration isolation damper and is filled in the inner and outer side spaces of the steel wire rope, the pitch gaps of spiral winding and the end gaps of the steel wire rope, the upper clamping plate and the lower clamping plate to form a combined body; the upper connecting plate and the lower connecting plate are respectively arranged on the upper side and the lower side of the combined body; The adjusting cushion block is arranged between the assembly and the upper connecting plate and the lower connecting plate and is used for adjusting the mechanical property of the steel wire rope shock isolation absorber under large deformation so as to adapt to different shock isolation and absorption requirements; The upper connecting plate, the upper adjusting cushion block and the upper side of the combination body are locked in series through a first detachable locking mechanism, the lower connecting plate, the lower adjusting cushion block and the lower side of the combination body are locked in series through a second detachable locking mechanism, and after the locking, the axis of the upper adjusting cushion block, the central axis of the combination body and the