CN203926542U - A kind of novel shearing rubber absorbers - Google Patents

Abstract

This patent discloses a new type of shear rubber shock absorber, which processes staggered holes on the rubber block, so that the compression deformation of the rubber block can be transformed into a combined deformation of compression and deduction, and the natural frequency and bearing capacity of the shock absorber can be improved. The adjustment range is wider. The shock absorber has a simple structure and is easy to install, and can be widely used in vibration isolation of water pumps, fans, air conditioning units, air compressors, generator sets, transformers, pipelines and the like.

Description

A New Shear Rubber Shock Absorber

technical field

This patent relates to a rubber shock absorber, more specifically, to a new type of shear rubber shock absorber.

Background technique

The existing rubber shock absorbers are roughly divided into three categories, one is the shear type, represented by the bowl-shaped rubber shock absorber, which has the advantages of low natural frequency and good vibration isolation effect, and the disadvantage of small load range , when the load is large, it is easy to be damaged by shearing; the second type is the compression type, represented by a solid rubber block, this kind of shock absorber has a large bearing capacity, but the vibration isolation effect is poor; the third type is the shear compression composite type, Corrugated rubber pads can be used as a representative of this type, but single-layer rubber pads are thin, have small deformation, and poor vibration damping effect. To improve vibration isolation efficiency, multiple layers must be stacked, but this structure is difficult to fix. Easy to misalign with layers.

Contents of the invention

This patent provides a new type of shear rubber shock absorber, which includes an upper backing plate 1, a lower backing plate 3 and a rubber block 2, the rubber block 2 is fixed between the upper backing plate 1 and the lower backing plate 3, and the upper backing plate There is a mounting hole 4 at the center of 1, and the rubber block is provided with a rubber block transverse hole 6 and a rubber block longitudinal hole 7, and the lower backing plate 3 has an opening hole 9; the upper backing plate 1 has an upper positioning ring 5 and a lower backing plate 1. The backing plate 3 has a lower positioning ring 8, and the upper and lower positioning rings cooperate with the longitudinal hole 7 of the rubber block.

The rubber block 3 is cylindrical as a whole, and its cross section is rectangular, circular or elliptical.

The unique feature of this shock absorber is that when the shock absorber is subjected to the rated load, the rubber block is mainly sheared and deformed, and the stiffness is low at this time, which can achieve a good shock absorption effect. When the load is too large, the compression deformation is the main form, the stiffness increases rapidly, and the shock absorber's ability to resist impact damage is also enhanced.

Description of drawings

Figure 1 is the front view of the vibration isolator

Figure 2 is a top view of the vibration isolator

Figure 3 is a part diagram of the lower backing plate and the lower positioning ring

Mark Description:

1. Upper backing plate 2. Rubber block 3. Lower backing plate

4. Mounting hole 5. Upper positioning ring 6. Horizontal hole of rubber block

7. Longitudinal hole of rubber block 8. Lower positioning ring 9. Light hole of lower backing plate

Detailed ways

The structure of the shock absorber is composed of three parts, the upper and lower are metal backing plates, and the middle is a rubber block. The upper and lower metal backing plates act as a limiter. There are threaded mounting holes in the middle of the upper backing plate, which are connected to the equipment base through bolts. The lower backing plate has two light holes, which can be connected to the foundation through expansion bolts. There is a positioning ring in the middle of the upper and lower backing plates, which is embedded in the groove of the rubber block during installation. The rubber block is the main body of vibration damping. There are multiple rows of staggered through holes in the rubber block. The number and diameter of the holes are selected according to the equipment load and natural frequency requirements. There is a hole in the longitudinal direction, the aperture is larger than the transverse aperture, and the hole can be a through hole or a blind hole. When the shock absorber is stressed, the rubber block deforms, and the cavity is subjected to shear force. At this time, the deformation includes the deformation of the rubber block itself and the deformation of the cavity, so as to absorb energy and achieve the purpose of vibration isolation; when the external force is removed, it returns to its original shape, that is, releases energy. Under the action of alternating force (vibration) on the shock absorber, the shock absorber can effectively reduce the transmission of vibration and achieve a good vibration reduction effect.

The above is only a preferred specific implementation of this patent, but the scope of protection of this patent is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in this patent, according to the technical solution of this patent Equivalent replacement or change of its patent concept should be covered within the protection scope of this patent.

Claims (2)

1. novel shearing rubber absorbers, comprise punch pad (1), lower bolster (3) and block rubber (2), block rubber (2) is positioned between punch pad (1) and lower bolster (3), it is characterized in that: described punch pad (1) center has mounting hole (4), described block rubber has block rubber transverse holes (6) and block rubber longitudinal hole (7), the hole (9) of opening the light on described lower bolster (3); On punch pad (1), have upper positioning ring (5), have lower positioning ring (8) on lower bolster (3), upper and lower positioning ring and block rubber longitudinal hole (7) coordinate.

2. rubber shock absorber according to claim 1, is characterized in that: described block rubber (3) entirety is cylindricality, and its cross section is rectangular, circle or oval.