JPH04171339A - Vibrationproof device for mechanical device - Google Patents

Abstract

PURPOSE:To easily obtain the desired elasticity absorbing faculty by installing the obverse and reverse surface side rubber shaped bodies on a rigid disc having a center hole, fitting a projecting part on one of both shaped bodies into a recessed part on the other, and laminating a proper quantity of the vibrationproof devices. CONSTITUTION:A shape steel 9 is fixed on the basic part 11 of a mechanical device 8, and a bolt 10 is fixed on the shape steel 9 through welding, etc., and the axis part of the bolt 10 is projectingly installed outward, and a plurality of vibrationproof devices 7 are interposed between a pair of separated shape steels. The vibrationproof devices 7 are superposed so that the projecting stripe and the recessed part are matched, and the axis part of the bolt 10 is freely fitted into the center hole 1 of the disc plate 2 of the vibrationproof devices 7 in the uppermost and lowermost stages, and the vibrationproof device 7 is extended and contracted in the vertical direction, and the shift in the radial direction is prevented. A proper quantity of vibrationproof devices 7 are fitted and laminated, and the vibrationproof effect corresponding to the load of a variety of mechanical devices 8, etc., can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention primarily relates to a vibration-absorbing vibration isolator interposed between a mechanical device that generates mechanical vibrations and a foundation.

[Prior art]

In conventional vibration isolators, rubber is interposed between a pair of metal plates, and each metal plate is supported on the bottom surface of the equipment and the top surface of the foundation.

Various vibration isolators were manufactured depending on the weight and other factors of the equipment.

[Problem to be solved]

Such conventional vibration isolators are troublesome to attach to equipment, and it is necessary to manufacture vibration isolators with different thicknesses for different loads.

Furthermore, there is a drawback that the amount of deformation of the elastic rubber is small for a relatively small vibration load, and the vibration damping effect is small.

[Means to solve the problem]

Therefore, the present invention adopts the following configuration in order to eliminate the above problems.

That is, the vibration isolator of the present invention is provided with a rigid disc 2 having a center hole 1 through which a bolt can be inserted.

The rubber molded body 5 includes a front side rubber molded body 5 and a back side rubber molded body 6 in which a center hole 3 is provided concentrically with each center hole 1,
A feature is that the protrusions on one side of the front side rubber molded body 5 and the back side rubber molded body 6 formed on the same radius have a matching relationship that allows them to fit into the recesses of the other side.

Next, the second invention of the present vibration isolator is configured such that the protruding height of the protruding stripes and the depth of the recess of the rubber molded bodies on both the front and back surfaces that are in an alignment relationship are different for each different radial direction. It is.

Next, the invention described in claim 3 is characterized in that in the first or second claim, the plurality of protrusions and the four parts have different end surface heights parallel to the disk.

Next, in the invention described in claim 4, the disk 2 and both rubber molded bodies 5, 6 are formed in an oval or elliptical shape.

[For production]

In the vibration isolator of the present invention, as shown in FIG. 4, an appropriate number of identical vibration isolators 7 are fitted and stacked one on top of the other, and vibration isolating effects can be obtained in accordance with the load of various mechanical devices 8 and other factors. . moreover,
By inserting the bolt 10 protruding from the mechanical device 8 into the center hole 1 of the vibration isolator 7, the vibration isolator 7 can be held in a predetermined position. When the vibration load of the mechanical equipment 8 is relatively small, a gap 12 is formed between the concave portion and the convex portion of adjacent vibration isolators, and the support area of the vibration isolator becomes small, reducing the amount of deformation due to the load. By increasing the size, small vibration loads can be sufficiently absorbed.

Further, even when only one vibration isolator 7 is used, the contact area with the mechanical device 8 and the base 11 changes depending on the load, and a relatively small vibration load can be sufficiently absorbed. In addition, when the load is large, the support area of the vibration isolator 7 becomes large.
fully support it.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

Fig. 1 is an axial sectional view showing an example of the present vibration isolator, Fig. 2 is a front view thereof, Fig. 3 is a plan view thereof, and Fig. 4 is a longitudinal sectional view showing an example of its usage state. FIG. 5 is an enlarged view of section V in FIG.

In the vibration isolator 7 of this embodiment, as shown in FIGS. 1 to 3, a front side rubber molded body 5 and a back side rubber molded body 6 are connected to the upper and lower sides of a disc 2, respectively.

This disk 2 is made of a rigid plate such as a steel plate or a hard synthetic resin material, and has a center hole 3 bored in its center. This center hole 3
The inner diameter of the bolt 10 is made large enough to allow the shaft portion of the bolt 10 shown in FIG. 4 to be inserted therethrough. The central hole does not necessarily have to be circular.

Moreover, synthetic rubber or natural rubber is used for the front side rubber molded body 5 and the back side rubber molded body 6. The hardness of the rubber is set to an appropriate value in consideration of the load of the equipment and the anti-vibration effect. A plurality of protrusions and recesses are formed on the surfaces of the front side rubber molded body 5 and the back side rubber molded body 6, respectively. Then, the convex stripes on the front side rubber molded body 5 side located at the same radius from the center are formed so that the concave portions on the back side rubber molded body 6 side are aligned, and the concave portions on the front side rubber molded body 5 side are formed so that the concave portions on the front side rubber molded body 5 side The protrusions on the side rubber molded body 6 side are formed so as to be aligned. In this embodiment, two protruding stripes are formed, but the present invention is not limited to this, and it is also possible to form multiple stripes, such as three or four stripes.

Further, in this embodiment, the height of each protrusion and the height of the recess from the disk 2 are different depending on the radius. As shown in FIG. 4, when the same vibration isolators 7 are stacked on top of each other, the gaps 12 formed between the protrusions and the recesses are set to different values.

That is, in FIG. 5, the heights of the gaps H5 to ti3 are different. Furthermore, the heights of the protrusions 6a and 6b themselves are also different. By doing this, the contact area supporting the load varies depending on the magnitude of the load generated in the axial direction, and even a relatively small vibration load can be reliably absorbed by sufficient deformation of the rubber.

The vibration isolator 7 thus constructed can be attached between the mechanical device 8 and the base 11 in the following manner.

First, the steel molds 9 are fixed to the mechanical device 8 and the base 11, respectively. For this shaped steel 9, an appropriate fastening member such as a bolt may be used. In this embodiment, a mold 1i having a hat-shaped cross section is used.
A bolt 10 is attached to the center of the cross section of i19, and is fixed to the steel mold 9 by means such as welding, with its shaft protruding outward. A plurality of vibration isolators 7 are interposed between a pair of spaced apart steel molds 9. The respective vibration isolators 7 are stacked so that their protrusions and recesses are aligned with each other. The uppermost and lowermost vibration isolators 7 have a central hole 1 in the disc 2.
The shaft portion of the bolt 10 is loosely inserted into. This prevents the vibration isolator 7 from expanding and contracting in the vertical direction and moving in the radial direction.

Next, FIG. 6 is a plan view of a second embodiment of the present invention. This embodiment differs from the first embodiment in that the outer periphery of the disk 2 and each rubber molded body 5.6 is oval. It was formed. A flat center hole 1 is provided on the long sleeve of the disc 2, and a plurality of protrusions and recesses are formed concentrically on the surfaces of the front side rubber molded body 5 and the back side rubber molded body 6. They are provided concentrically in the center hole 1, respectively. The protrusions on the front side rubber molded body and the recesses on the back side rubber molded body, which are at the same distance from the center hole 1, are formed so as to be aligned with each other. Note that it is also possible to use an oval shape instead of this oval shape. Moreover, instead of the flat center hole 1, two circular holes may be provided on the long sleeve of the disk 2, spaced apart from each other.

[Examples of odd forms]

The present invention is of course not limited to the above-mentioned embodiments, and for example, the circumferential edge of the disk 2 may be made to coincide with the circumferential edges of the front side rubber molded body 5 and the back side rubber molded body 6.

Furthermore, it is also possible to adopt a structure in which the outer circumferential circle of the disc 2 is embedded inside the front side rubber molded body 5 and the back side rubber molded body 6.

〔Effect of the invention〕

In the vibration isolator of the present invention, a front side rubber molded body 5 and a back side rubber molded body 6 are provided on both sides of a rigid disc 2, and the disc 2
Since the center hole 1 is drilled in the center hole 1, the present vibration isolator can be quickly installed between the mechanical device 8 and the base 11 by simply protruding the bolt 10 from the mechanical device 8.

Moreover, the surface side rubber molded body 5. Concave portions and convex stripes are alternately formed concentrically on the back side rubber molded body 6, and one of the convex stripes formed on the same radius of the image molded body has a matching relationship that allows it to fit into the concave portion of the other. By laminating an appropriate number of vibration isolators, it is possible to obtain a desired elastic absorbing capacity for the container.

Next, the invention described in claim 2 is such that the difference between the protruding height of the protruding stripes and the depth of the recessed portions that are aligned in the front side rubber molded body 5 and the back side rubber molded body 6 is equal to the radius of each. Since the structure is configured differently for each different type, the amount of elastic deformation is increased when the load is small (and the vibration damping effect is increased. At the same time, when a large load is applied, the gap between the concave portion and the convex strip is reduced). By eliminating this, its supporting capacity can be increased.

[Brief explanation of drawings]

Fig. 1 is an axial sectional view showing an example of the present vibration isolator, Fig. 2 is a front view thereof, Fig. 3 is a plan view thereof, and Fig. 4 is a longitudinal sectional view showing an example of its usage state. FIG. 5 is an enlarged view of the rubber shown in FIG. 4. FIG. 6 is a plan view showing another example of the present vibration isolator. 1.3... Center hole 2... Disc 5... Front side rubber molded body 6... Back side rubber molded body 5a, 5b,
6a, 6b... Convex stripes 5c, 5d, 6c, 6d...
・Concavity 7...Vibration isolator ・Machine equipment 9・
...Shape steel 10...Bolt 11...Base 12...Gap agent
Patent Attorney Kubo 1) Takumi

Claims (4)

[Claims] (1) A rigid disk 2 having a center hole 1 through which a bolt can be inserted, and a front side rubber molded body 5 having a center hole 3 concentrically provided with the center hole 1 and connected to both sides of the disk. and a back side rubber molded body 6, and concave portions and six stripes are alternately formed concentrically on the outside of the center hole 1 in the radial direction, and are formed on the same radius. 1. A vibration isolator for industrial machinery, characterized in that a concave portion of one of the body and a back side rubber molded body is in a matching relationship such that a convex portion of the other side can be fitted. (2) According to claim 1, the difference between the protruding height of the protruding stripes and the depth of the recess of the rubber molded body on both the front and back surfaces in the matching relationship is different for each of the different radii. . (3) According to claim 1 or 2, the heights of the end faces parallel to the disc of the plurality of protrusions and recesses are different from each other. (4) In claim 1, the disk 2 and both the rubber molded bodies 5 and 6 are formed into an oval or an elliptical shape.