CN213653060U

CN213653060U - Multistage vibration reduction vibration isolator

Info

Publication number: CN213653060U
Application number: CN202022410353.2U
Authority: CN
Inventors: 汪永建
Original assignee: Shanghai Juren Railway Equipment Co ltd
Current assignee: Shanghai Juren Railway Equipment Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-07-09
Anticipated expiration: 2030-10-27

Abstract

The utility model provides a multistage damping isolator, belong to rail transit technical field, this multistage damping isolator includes isolator urceolus and isolator inner tube, the isolator inner tube sets up in the isolator urceolus, the isolator urceolus comprises urceolus barrel and fixed roof, fixed roof is fixed in the circumference inner wall upper portion of urceolus barrel, be provided with multistage damping mechanism in the isolator inner tube, multistage damping mechanism comprises multiunit phononic crystal cell, every group phononic crystal cell includes outside elastic element, outside quality component, inside elastic element and inside quality component, whole damping isolator adopts multistage damping's mode, not only damping is effectual, also can effectively reduce the production of noise, the while device is under construction, the maintenance, it is convenient when changing, quick advantage, except the rail transit field, at the vibration isolation of building basis, the vibration isolation of boats and ships, the vibration isolation of vibration isolation, the vibration isolation of boats and noise, All applicable on large-scale power machine's the vibration isolation, improved greatly the utility model discloses an adaptability.

Description

Multistage vibration reduction vibration isolator

Technical Field

The utility model relates to the field of machinary, especially, relate to rail transit technique, concretely a multistage damping isolator.

Background

The rail transit brings convenience to people and brings environmental protection problems such as vibration, noise and the like. When the train moves, the stress generated by the contact surface of the wheels and the steel rail moves along with the movement of the train, the stress in the movement also moves along with the movement of the train, the stress distribution is transmitted to the surrounding contact surface, a basic movement stress field is formed, and secondary vibration and noise of nearby underground structures and buildings are induced. In the vibration and noise reduction means in the urban rail transit industry at present, the vibration isolation effect of the floating plate track bed vibration isolation system is most ideal, so that the floating plate track bed vibration isolation system is suitable for special fields needing higher vibration reduction requirements, such as hospitals, music halls, museums, precision instrument laboratories and the like, and is widely applied to the aspect of rail transit vibration noise control. The core component with the vibration isolation effect in the floating slab track bed vibration isolation system is an elastic element at the lower part, so that the effect of bearing the static load of a track structure and the dynamic load of a train by a supporting track bed is achieved on one hand, and the effect of transmitting the vibration generated by the interaction of the isolation wheel and the rail to a foundation is achieved on the other hand. The elastic elements currently used in vibration isolation systems for the lower part of floating slabs are mainly rubber and steel springs.

The vibration isolation support in the floating plate vibration isolation system is divided into two stages, namely a static displacement stage which is mainly generated by the weights of the floating plate and the steel rail; the second is a dynamic displacement stage, which is generated when a train passes through. The vibration isolation effect of the floating plate vibration isolation system is related to the dynamic stiffness and damping of the vibration isolator.

The rubber mat floating slab has achieved certain effect in the aspect of rail transit vibration control, but the rubber mat floating slab is complex in construction and not easy to maintain and replace. And the rubber mainly generates compression deformation after being stressed, and the vibration isolation effect is lower. The rubber material has a short service life under the action of reciprocating fatigue load, and cannot reach the same service life as a metal material; the rubber has poor pollution resistance and corrosion resistance and a narrow use frequency range.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multistage damping isolator aims at solving the rubber pad floating plate among the prior art and has gained certain effect in the aspect of rail transit vibration control, but its construction is complicated, is difficult for maintaining and changing. And the rubber mainly generates compression deformation after being stressed, and the vibration isolation effect is lower. The rubber material has the problems of short service life and the like under the action of reciprocating fatigue load.

In order to achieve the above object, the utility model provides a following technical scheme: a multistage vibration-damping vibration isolator comprises a vibration isolator outer cylinder and a vibration isolator inner cylinder, wherein the vibration isolator inner cylinder is arranged in the vibration isolator outer cylinder, the vibration isolator outer cylinder consists of an outer cylinder body and a fixed top plate, the fixed top plate is fixed on the upper part of the circumferential inner wall of the outer cylinder body, a multistage vibration reduction mechanism is arranged in the inner cylinder of the vibration isolator, the multistage vibration reduction mechanism is composed of a plurality of groups of phononic crystal cells, each group of phononic crystal cells comprises an external elastic element, an external mass element, an internal elastic element and an internal mass element, the external elastic elements and the internal elastic elements are all provided with a plurality of elastic elements, one ends of the external elastic elements are all arranged at the lower end of the fixed top plate, the outer mass element is fixed to the other ends of the plurality of outer elastic elements, one ends of the plurality of inner elastic elements are fixed to the upper end of the outer mass element, and the inner mass element is fixed to the other ends of the plurality of inner elastic elements.

Preferably, the phononic crystal unit cells are at least provided with four groups, and the four groups of phononic crystal unit cells are sequentially overlapped from top to bottom.

Preferably, a base is fixed at the bottom of the multistage vibration damping mechanism, and a vibration damping rubber layer is arranged at the bottom of the base.

Preferably, thread groove and draw-in groove have been seted up to the upper end of isolator urceolus, the thread groove is provided with threely, be provided with similar triangle roof in the draw-in groove, and similar triangle roof respectively with thread groove and draw-in groove phase-match.

Preferably, the top of the inner cylinder of the vibration isolator is provided with a limiting groove, and a foundation embedded cylindrical part is arranged in the limiting groove.

Preferably, a plurality of external elastic elements and internal elastic elements are arranged in a circumferential array along the inner support of the inner cylinder of the vibration isolator.

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

1. in this scheme, whole damping isolator adopts multistage damping's mode, not only the damping is effectual, also can effectively reduce the production of noise, four group's phononic crystal cells are from last down fold in proper order and are constituteed inside damping mechanism, it is poor effectively to have overcome the empty wagon state vibration isolation performance that ordinary steel spring isolator caused, the too big shortcoming of the vertical displacement of track during the heavy-duty car state, ensure that the isolator has stable vibration isolation performance all the time, and this isolator simple structure, easy dismounting, be convenient for make and maintain, and solved among the prior art rubber isolator and easily aged, the short-lived scheduling problem.

2. In this scheme, because the damping mechanism in the isolator sets up in the isolator urceolus, external pollutant can not contact with it for rubber is difficult to corroded, can prolong its life, the type of triangle roof at top sets up the effective isolator urceolus connection of ability also simultaneously, with the vibration of transmission floating plate or main vibration system, further improve the damping effect, whole isolator is under construction, the maintenance, it is convenient when changing, quick advantage, except that the track traffic field, all applicable on the vibration isolation of building basis, the vibration isolation of boats and ships, the vibration isolation of large-scale power machine, improved greatly the utility model discloses an adaptability.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a perspective view of the present invention;

fig. 4 is a top view of the present invention;

fig. 5 is a sectional view of the present invention.

In the figure: 1-a vibration isolator outer cylinder; 11-outer cylinder body; 12-fixing the top plate; 13-thread groove; 14-a card slot; 2-inner cylinder of vibration isolator; 21-an outer elastic element; 22-an outer mass element; 23-an internal elastic element; 24-an internal mass element; 3-a base; class 4-triangular ceiling; 5-a limit groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; it should be noted that unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1 and 2, the present invention relates to a multistage vibration damping vibration isolator, which comprises a vibration isolator outer cylinder 1 and a vibration isolator inner cylinder 2, wherein the vibration isolator inner cylinder 2 is disposed in the vibration isolator outer cylinder 1, the vibration isolator outer cylinder 1 is composed of an outer cylinder 11 and a fixed top plate 12, the fixed top plate 12 is fixed on the upper portion of the circumferential inner wall of the outer cylinder 11, a multistage vibration damping mechanism is disposed in the vibration isolator inner cylinder 2, the multistage vibration damping mechanism is composed of a plurality of groups of phononic crystal cells, each group of phononic crystal cells includes an outer elastic element 21, an outer mass element 22, an inner elastic element 23 and an inner mass element 24, the outer elastic element 21 and the inner elastic element 23 are both provided with a plurality of parts, one end of the plurality of outer elastic elements 21 is disposed at the lower end of the fixed top plate 12, the outer mass element 22 is fixed at the other end of the plurality of outer, the inner mass member 24 is fixed to the other ends of the plurality of inner elastic members 23.

In the embodiment of the utility model, the whole vibration damping isolator adopts a multi-stage vibration damping mode, which not only has good vibration damping effect, but also can effectively reduce the noise, four groups of phononic crystal cells are sequentially overlapped from top to bottom to form an internal vibration damping mechanism, thereby effectively overcoming the defects of poor vibration damping performance in an empty car state and overlarge vertical displacement of a track in a heavy car state caused by a common steel spring vibration isolator, ensuring that the vibration isolator has stable vibration damping performance all the time, and the vibration isolator has simple structure, convenient assembly and disassembly, convenient manufacture and maintenance, and solving the problems of easy aging, short service life and the like of the rubber vibration isolator in the prior art, in the scheme, the external quality component 22 and the internal quality component 24 can adopt metal materials, the external elastic component 21 and the internal elastic component 23 preferably select steel springs, rubber springs and other high polymer material springs and the like, and the external quality component 22 and the internal quality component 24 are of disc-shaped monomer, preferably a metallic material or an alloy material.

Specifically, as shown in fig. 1, at least four groups of the photonic crystal cells are arranged, and the four groups of the photonic crystal cells are sequentially stacked from top to bottom.

In this embodiment: the utility model discloses four group's phononic crystal cells are from last down to fold in proper order and are constituteed, and its characteristic itself can full play in the combination of cascading more.

Specifically, referring to fig. 1 and 2, a base 3 is fixed at the bottom of the multistage damping mechanism, and a damping rubber layer is disposed at the bottom of the base 3.

In this embodiment: the damping rubber layer of base 3 and base 3 bottom can further improve the shock attenuation effect of device, extension device's practical life.

Specifically, as shown in fig. 3 and 4, the upper end of the vibration isolator outer cylinder 1 is provided with three thread grooves 13 and three clamping grooves 14, the similar triangular top plate 4 is arranged in the clamping grooves 14, and the similar triangular top plate 4 is respectively matched with the thread grooves 13 and the clamping grooves 14.

In this embodiment: the top triangular-like top plate 4 can also be effectively connected with the outer cylinder of the vibration isolator to transmit the vibration of the floating plate or the main vibration system, so that the vibration reduction effect is further improved.

Specifically, please refer to fig. 5, a limiting groove 5 is formed at the top of the inner cylinder 2 of the vibration isolator, and a foundation embedded cylinder is disposed in the limiting groove 5.

In this embodiment: the foundation embedded cylindrical pieces in the limiting groove 5 and the limiting groove 5 can prevent the device from being damaged due to excessive stress.

Specifically, referring to fig. 4 and 5, a plurality of external elastic elements 21 and internal elastic elements 23 are arranged in a circumferential array along the inner support of the inner cylinder 2 of the vibration isolator.

In this embodiment: the plurality of external elastic elements 21 and the plurality of internal elastic elements 23 are arranged in a circumferential array along the internal support of the vibration isolator inner cylinder 2, so that the stress of the plurality of groups of phononic crystal cells can be more uniform.

The utility model discloses a theory of operation and use flow: the whole vibration-damping vibration isolator adopts a multistage vibration-damping mode, not only has good vibration-damping effect, but also can effectively reduce the generation of noise, four groups of phononic crystal cells are sequentially overlapped from top to bottom to form an internal vibration-damping mechanism, the defects of poor vibration-damping performance in an empty vehicle state and overlarge vertical displacement of a track in a heavy vehicle state caused by a common steel spring vibration isolator are effectively overcome, the vibration-damping mechanism in the vibration isolator is ensured to have stable vibration-damping performance all the time, the vibration isolator has simple structure, convenient assembly and disassembly and convenient manufacture and maintenance, the problems that a rubber vibration isolator is easy to age, short in service life and the like in the prior art are solved, because the vibration-damping mechanism in the vibration isolator is arranged in the outer barrel 1 of the vibration isolator, external pollutants can not contact with the vibration isolator, the rubber is not easy to corrode, the service life of the vibration isolator can be prolonged, meanwhile, the triangular roof plate 4 at the top, further improve the damping effect, whole isolator has conveniently when construction, maintenance, change, and quick advantage removes the rail transit field, all is applicable on the vibration isolation of building basis, boats and ships, the vibration isolation of large-scale power machine, has improved greatly the utility model discloses an adaptability.

The details of the present invention are well known to those skilled in the art.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A multistage vibration damping isolator is characterized in that: including isolator urceolus (1) and isolator inner tube (2), isolator inner tube (2) set up in isolator urceolus (1), isolator urceolus (1) comprises urceolus barrel (11) and fixed roof (12), fixed roof (12) are fixed in the circumference inner wall upper portion of urceolus barrel (11), be provided with multistage damping mechanism in isolator inner tube (2), multistage damping mechanism comprises multiunit phonon crystal cell, every group phonon crystal cell includes outside elastic element (21), outside quality component (22), inside elastic element (23) and inside quality component (24), outside elastic element (21) and inside elastic element (23) all are provided with a plurality ofly, a plurality of the one end of outside elastic element (21) all sets up in the lower extreme of fixed roof (12), outside quality component (22) are fixed in the other end of a plurality of outside elastic element (21), one end of the plurality of inner elastic elements (23) is fixed to the upper end of the outer mass element (22), and the inner mass element (24) is fixed to the other end of the plurality of inner elastic elements (23).

2. The multistage vibration damping and isolating isolator according to claim 1, wherein: the phononic crystal cells are at least provided with four groups, and the four groups of phononic crystal cells are sequentially overlapped from top to bottom.

3. The multistage vibration damping isolator according to claim 2, wherein: the bottom of the multistage vibration damping mechanism is fixed with a base (3), and a vibration damping rubber layer is arranged at the bottom of the base (3).

4. The multistage vibration damping and isolating isolator according to claim 3, wherein: thread groove (13) and draw-in groove (14) have been seted up to the upper end of isolator urceolus (1), thread groove (13) are provided with threely, be provided with type triangle roof (4) in draw-in groove (14), and type triangle roof (4) respectively with thread groove (13) and draw-in groove (14) phase-match.

5. The multistage vibration damping and isolating isolator according to claim 4, wherein: limiting groove (5) have been seted up at the top of isolator inner tube (2), and are provided with the pre-buried cylinder spare of basis in limiting groove (5).

6. The multistage vibration damping and isolating isolator of claim 5, wherein: and a plurality of external elastic elements (21) and internal elastic elements (23) are arranged in a circumferential array along the inner support of the vibration isolator inner cylinder (2).