CN201368168Y

CN201368168Y - Vibration isolating pad and vibration isolator

Info

Publication number: CN201368168Y
Application number: CNU200920067127XU
Authority: CN
Inventors: 叶业庆; 吴红伟; 俞志峰; 曹之苓; 徐福根
Original assignee: SHANGHAI TENGLONG ELECTRIC POWER TECHNOLOGY Co Ltd; Shanghai Tenglong Group Co Ltd
Current assignee: SHANGHAI TENGLONG ELECTRIC POWER TECHNOLOGY Co Ltd; Shanghai Tenglong Group Co Ltd
Priority date: 2009-01-19
Filing date: 2009-01-19
Publication date: 2009-12-23
Anticipated expiration: 2019-01-19

Abstract

The utility model discloses a vibration isolating pad made of rubber material. The vibration isolating pad comprises a plurality of vibration reduction units in plane connection; raised strip-shaped teeth are arranged on the upper and the lower surface of each vibration reduction unit and are perpendicular to each other. The utility model has better vibration isolation effect. A plurality of vibration isolating pads are overlapped; and steel spring plates are arranged between two adjacent vibration isolating pads, thereby forming a vibration isolator with better vibration isolation effect and better carrying capacity.

Description

Vibration isolator and vibration isolator

Technical field

The utility model relates to antivibration area, is specifically related to a kind of isolation mounting that is installed in device bottom.

Background technique

Some hard-wired equipment can produce vibration and noise when operation.More particularly be installed in the interior equipment of building such as building, all need to take corresponding vibration reducing measure.

Such as transformer is exactly a kind of equipment that can produce vibration and noise when working, present user's electric substation and electric industry station, major part is built in the building or with the main building disjunctor and builds, the building structure major part of transformer vault is framework and plate diaphragm wall, be the stronger building of rigidity, it has good conduction to vibration.Therefore, the vibration of transformer can be delivered to arbitrary aspect in building by building, even when the operational shock frequency of the natural frequency of certain layer of certain chamber and transformer near or when consistent, this chamber can cause resonance, cause the personnel of this chamber to work and to have a rest, boom is arranged in the brain always, had a strong impact on people's work environment and living environment.Therefore eliminating transformer transfer of vibration and reduction are a urgent job by the low-frequency noise that the transformer vibration produces.

The working procedure of transformer is the alternation process of electricity and magnetic, produced electric and magnetic oscillation simultaneously, because electric and magnetic oscillation promptly produces low-frequency noise, the size of its vibration is relevant with the size of electromagnetism alternating quantity, and the manufacturing process of the material of the load size of electromagnetism alternating quantity and transformer and transformer iron core and transformer and indivisible factor is all arranged with its structure.

Analyze theoretically, the vibration frequency of transformer should be 50Hz, but sees from practical test result and to have certain deviation, and this is that transformer itself has a natural frequency simultaneously because threephase load is unbalanced causes.During the transformer operation, its electricity and the magnetic synthesis wave strange change of trace (not being the sine wave of standard) separately in electromagnetism alternation process, because the variation of wave mode, we can decomposite many odd harmonics, the harmonic wave that its component is bigger can be superimposed upon on the sine wave, so the vibration frequency of measuring transformer when work is all about 50Hz.On the manufacturing process and structure of transformer, the generation of leakage field also is difficult to avoid, and it also can increase the vibration and the noise of transformer.

Existing rubber, spring damping pad, because the restriction of its structure, in the applications such as installation of transformer, its effectiveness in vibration suppression often can't satisfy usage requirement.

The model utility content

The technical problems to be solved in the utility model provides the better vibration isolator of a kind of effectiveness in vibration suppression.

In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: a kind of vibration isolator, make by rubber material, it comprises the damper unit that a plurality of planes connect, the upper and lower surface of each damper unit is equipped with the bar shaped tooth of projection, and the bar shaped tooth on each upper and lower surface of damper unit is orthogonal.

Preferably, on surface, the same side, the bar shaped tooth of adjacent two damper units is orthogonal.

Preferably, described rubber material is a nitrile butadiene rubber.

The beneficial effects of the utility model are: because the surface of vibration isolator is provided with the bar shaped tooth of projection, vibration is delivered to vibration isolator inside by the horizontal bar shaped tooth of upper surface, inside through the decay after, vertical bar shaped teeth directional by lower surface transmits down again, because the direction of upper and lower surperficial bar shaped tooth is mutually perpendicular, therefore in fact the bar shaped tooth of lower surface has only some the discrete points space crossed point of upper surface bar shaped tooth (just with) in transmitting vibrations, vibration is just intercepted well in vibration isolator inside like this, has just played good vibration isolation effect.

Another technical problem to be solved in the utility model provides the better vibration isolator of a kind of effectiveness in vibration suppression.

Technological scheme is as follows: a kind of vibration isolator, comprise at least two stacked vibration isolators up and down, be provided with Steel Spring Plate between adjacent two vibration isolators, described vibration isolator comprises the damper unit that a plurality of planes connect, the upper and lower surface of each damper unit is equipped with the bar shaped tooth of projection, and the bar shaped tooth on each upper and lower surface of damper unit is orthogonal.

Preferably, the bar shaped tooth direction on the vibration isolator of described Steel Spring Plate both sides is corresponding vertical.

Preferably, described vibration isolator is bonded in the surface of Steel Spring Plate.

The beneficial effect of this vibration isolator is: by the stack of multi-disc vibration isolator, can improve the effect of vibration isolation greatly, the amount of deformation that disperses vibration isolator simultaneously can both be controlled in the regime of elastic deformation distortion of each sheet vibration isolator, to guarantee the proper functioning of vibration isolator.The Steel Spring Plate that is provided with between the vibration isolation sheet can play the effect of further attenuation vibration, and the vibration isolator that makes each layer simultaneously is bearing load more equably.Therefore, vibration isolator of the present utility model can be used for the bigger equipment of supported weight, and has good vibration isolating effect.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is a kind of vibration isolator plan view with three damper units of the utility model.

Fig. 2 is the plan view of Fig. 1.

Fig. 3 is a kind of vibration isolator schematic representation with six damper units of the utility model.

Fig. 4 is the structural representation of a kind of vibration isolator of the utility model.

Among the figure: the vertical bar shaped tooth 10 ' of 1-vibration isolator 10--horizontal bar shaped tooth

11,12,13-damper unit 2-Steel Spring Plate

Embodiment

As shown in Figure 1, 2, the utility model vibration isolator 1 is made by rubber material, it comprises the

damper unit

11,12,13 that three planes connect, the upper and lower surface of each damper unit is equipped with the bar shaped tooth of projection, and on the surface vertical bar shaped tooth 10, be horizontal bar shaped tooth 10 ' on another surface, the bar shaped tooth on promptly upper and lower two surfaces is orthogonal.

More excellent is that on surface, the same side, the bar shaped tooth of adjacent two damper units is also orthogonal, as Fig. 2, shown in Figure 3.

The material of vibration isolator 1 is preferably nitrile butadiene rubber, and it has oil resistant, performance such as corrosion-resistant, ageing-resistant.

As shown in Figure 4, stacked about in the of 1 by above-mentioned multi-disc vibration isolator, between adjacent two vibration isolators 1 Steel Spring Plate 2 is set, so just constituted all stronger vibration isolator of a kind of vibration isolating effect and bearing capacity, the bar shaped tooth of Steel Spring Plate 2 upper strata vibration isolator lower surfaces is also just in time corresponding vertical with the bar shaped tooth direction of lower floor's vibration isolator upper surface.Vibration isolator 1 can be bonded in the surface of Steel Spring Plate 2 with glue, and larger area is talked about if desired, and the polylith vibration isolator 1 that also can tile on each layer can be reserved appropriate gap between adjacent two vibration isolators of tiling, is the resiliently deformable slot milling of vibration isolator.

When concrete the application, the parameters such as hardness of the number of plies of vibration isolator, vibration isolator need to wait to determine according to the normal load that vibration isolator bore, the vibration frequency f of equipment in the vibration isolator, guarantee that vibration isolator is operated in the regime of elastic deformation.Vibration isolator model according to selected can calculate its natural frequency fn, and the value of fn is the smaller the better, when the ratio of f/fn greater than 2.5 the time, can guarantee that vibration isolating effect is greater than 80%.

Claims

1. a vibration isolator is made by rubber material, it is characterized in that: it comprises the damper unit that a plurality of planes connect, and the upper and lower surface of each damper unit is equipped with the bar shaped tooth of projection, and the bar shaped tooth on each upper and lower surface of damper unit is orthogonal.

2. vibration isolator according to claim 1 is characterized in that: on surface, the same side, the bar shaped tooth of adjacent two damper units is orthogonal.

3. vibration isolator according to claim 1 and 2 is characterized in that: described rubber material is a nitrile butadiene rubber.

4. vibration isolator, it is characterized in that: comprise at least two stacked vibration isolators up and down, be provided with Steel Spring Plate between adjacent two vibration isolators, described vibration isolator comprises the damper unit that a plurality of planes connect, the upper and lower surface of each damper unit is equipped with the bar shaped tooth of projection, and the bar shaped tooth on each upper and lower surface of damper unit is orthogonal.

5. vibration isolator according to claim 4 is characterized in that: the bar shaped tooth direction on the vibration isolator of described Steel Spring Plate both sides is corresponding vertical.

6. according to claim 4 or 5 described vibration isolators, it is characterized in that: described vibration isolator is bonded in the surface of Steel Spring Plate.