JPS6137886Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a vibration isolating device for supporting a vibrating machine or the like.

As shown in FIG. 1, a conventional vibration isolator supports a machine 1 that generates vibrations on concrete 3 on the ground via a plurality of elastic support members 2 in order to prevent the vibrations from propagating to the surroundings. It is common to do so. As shown in FIG. 2, this elastic support member 2 has plates 5 and 6 made of steel plate placed on the upper and lower sides of an elastic body 4 such as rubber, and the shaft 7 of the upper plate 5 is a U-shaped steel plate serving as a frame for the machine 1. 8, and the shaft 9 of the lower plate 6 is embedded in the concrete 3 so that it can be pulled out.

However, although this elastic support member 2 absorbs the vibration energy of vibrations in the vertical direction, it is completely useless against vibrations in the horizontal direction.
Therefore, in order to regulate the vibration amplitude in the horizontal direction,
It was necessary to bury the regulating rod 10 in the concrete 3 at a position that leaves a slight gap on the outer surface of the U-shaped steel 8. In addition, the center of gravity G of the machine 1 is not necessarily located at the center, but may be eccentric as shown in Fig. 4. In this case, the center of gravity G of the machine 1 is It was necessary to arrange many elastic support members 2 nearby.

This idea was devised in view of the above points, and the purpose was to create a vibration isolator that can regulate and absorb horizontal vibrations, and that also has a vibration isolating function according to the load. It is to provide.

This invention will be explained in detail below with reference to illustrated embodiments. FIG. 5 is a diagram showing an embodiment of the vibration isolator A, in which reference numeral 11 indicates an elastic body such as rubber, the overall shape is a belt-like shape toward the back in the figure, and the lower surface is concave. Three rows of short low protrusions 11a on the inner sole, and tall high protrusions 11 on both sides.
b are formed one row at a time. Therefore, low protrusion 1
Grooves 18 are formed between the protrusions 1a and between the low protrusions 11a and the high protrusions 11b. Both ends of the recess are formed as regulating strips 11c that are higher in height than the high protruding strips 11b, and deep grooves 11d formed on the outside of each regulating strip 11c are provided with side pieces 12 of the U-shaped pedestal 12.
The tip of a is designed to fit. Frame 1
2 and the elastic body 11 are adhesively fixed. Reference numeral 13 indicates a base whose upper part is fitted into the recesses of the elastic body 11, and is fixed to the concrete 3 with embedded bolts 14, screws 15, washers 16, etc. in recesses 13a provided at predetermined intervals. The width of the base 13 is narrower than the mutual interval between the inner walls of the restriction strips 11c on both sides of the elastic body 11, and the width of the base 13 is narrower than the interval between the inner walls of the restriction strips 11c on both sides of the elastic body 11, and
It is wider than the mutual spacing between the wall surfaces on the 1c side.

In the vibration isolator A of this embodiment, the base 1
The elastic body 11 is positioned so that the high protrusions 11b on both sides of the elastic body 11a rest on the elastic body 11a, and the machine is fixed to the mount 12 on the upper surface. As a result, the vertical vibrations of the machine are absorbed by the high protruding strips 11b, and the amplitude of horizontal vibrations is limited because the inner wall surface of the regulating strips 11c hits the outer wall surface of the base 13. At the same time, vibration absorption is also performed. Furthermore, when the load of the machine is large, the high protrusion 11b is compressed and becomes lower, but since the low protrusion 11a comes into contact with the base 13, vibration absorption is performed while the load capacity is increased. You will be able to do it.

Therefore, as shown in FIG. 6, if the above-mentioned vibration isolator A is interposed on the entire lower edge of the machine 1, vibration control and absorption in the X and Y directions can be achieved by itself. Even if the center of gravity G of the machine 1 is eccentric, the vibration isolation of the part on the side of the center of gravity G will not be impaired. In addition, this vibration isolator A
The shape does not necessarily have to be such that it is interposed along the entire edge of the lower part of the machine, but it may be interposed only at a corner or a rounded corner as shown in Figures 7 and 8, or
Alternatively, the corner portion and other portions may be appropriately combined.

Figure 9 shows the base 13 in Figure 5 as U-shaped steel 17.
FIG. 10 shows a modification example in which a plurality of tongue pieces 11e are provided on the upper side of the elastic body 11 to strengthen the force for fitting and holding the base 12 into the deep groove 11d. . By providing a plurality of tongues 11e on the side surface of the elastic body 11 in this manner, it is possible to maintain both the tongues 11e integrally with the pedestal 12 without adhesively fixing them.

FIG. 11 shows still another modification, in which the protrusions on the elastic body 11 are arranged as low protrusions 11a and high protrusions 1.
1b is provided, and the protrusions 11a, 11b and 11 are provided on the upper surface.
Crimp parts 19 are placed at appropriate intervals so that f is an angle.
This is a case where a groove 20 is formed between the crimping portions 19 and the frame 12 is fixed together. If the height of the protrusion is formed in several stages as in this embodiment, and grooves are also provided on the upper surface, even slight changes in load capacity can be accommodated, and the vibration absorption performance is improved.

In the above embodiment, the protrusions of the concave portion of the elastic body 11 are the low protrusion 11a, the medium protrusion 11f, and the high protrusion 11b.
Although the protrusions formed in parallel along the longitudinal direction of the regulating strip 11c have been described, the present invention is not limited to this, and the present invention is not limited to this, and may include a structure in which a columnar protrusion with a circular or polygonal cross section is erected. Moreover, the arrangement of the protrusions having different heights can be changed as appropriate. Furthermore, the structure of the crimp portion 19 on the upper surface of the elastic body 11 may also be formed by a pillar-shaped projection similar to the projection in the recess.

To attach the vibration isolating device according to this invention, in addition to what is shown in the embodiment, the top surface of the pedestal 12 and/or the base 1
Of course, other members can be interposed on the lower surface of 3. Other modifications and changes are possible as long as they do not change the gist of the invention.

As is clear from the above explanation, the vibration isolator of this invention can not only absorb vibrations in the vertical direction, but also regulate and absorb vibrations in the horizontal direction, and can also absorb vertical loads. The advantage is that even if the load changes, the vibration absorbing ability can be fully demonstrated in accordance with the load. In addition, since it is easy to mold, it can be made cheaper than conventional products, and it is also easy to assemble, improving work efficiency.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional vibration isolator in use.
Figure 2 is a partially enlarged view of Figure 1, Figure 3 is a side view of the enlarged part, Figure 4 is a diagram of the installation layout of a conventional vibration isolator for a machine with an eccentric center of gravity, and Figure 5 is the proposed invention. A sectional view of a vibration isolator showing an embodiment of
Figure 6 is an explanatory diagram of the arrangement of the vibration isolator when it is placed on the entire edge of the machine, and Figures 7 and 8 are illustrations of the arrangement when the vibration isolator is placed in combination with the corner edges and other parts of the machine. Layout explanatory diagram, Figure 9 is a sectional view of a modified example of the vibration isolator,
FIG. 10 is a partial sectional view of another modified example of the vibration isolator, and FIG. 11 is a sectional view of still another modified example of the vibration isolator. 1... Machine, 11... Elastic body, 11a, 11
b, 11f...projection, 11c...regulating piece, 12...
... Frame, 13... Base, A... Vibration isolator.

Claims (1)

[Claims for Utility Model Registration] (1) A recess is formed on the lower surface, and a plurality of protrusions of different heights are formed on the inner bottom of the recess and are shorter than the height of the regulating strips forming both edges of the recess. 1. A vibration isolating device comprising: an elastic body formed in an elastic body; a base partially fitted into the recess of the elastic body; and a frame for mounting a machine placed over the top surface of the elastic body. (2) The vibration isolator according to claim 1, wherein the protrusion is in the form of a protrusion formed in the longitudinal direction of the elastic body. (3) The vibration isolating device according to claim 1, wherein the protrusion is column-shaped.