JP3101121B2 - Vibration isolation bearing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration bearing, and more particularly to a vibration isolating support used to improve the working environment against vibrations generated in factories and the like. The present invention relates to an anti-vibration support that is capable of supporting and supporting the same, and is capable of simultaneously isolating large vibrations in both vertical and horizontal directions.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for improving the working environment of workers in terms of both health and efficiency. For example, a large crane or the like installed in a factory shakes the floor of a building around the large crane due to large vibration, which has a bad influence on the working environment of the worker.

[0003] In addition, facilities that do not improve production have been computerized, and many precision instruments have been introduced, and the importance of reducing vibrations has also increased due to the transformation into an intellectual industrial field. I have.

[0004]

As a method of improving such work, it is conceivable to support a floor member of a building with a laminated rubber obtained by laminating a plurality of steel plates and rubber plates. Since the direction is soft but hard in the vertical direction, the effect of reducing vibration in the factory due to heavy-load equipment such as a crane is small.

Therefore, it is conceivable to support the floor member of the building with a coil spring capable of withstanding a relatively large load.
In this case, there are the following problems.

In order to cope with a large load, a coil spring is usually dealt with by making the spring material thicker. However, the production of large coil springs is disadvantageous in that the equipment is many times larger and the labor is increased compared to the production of small coil springs, which significantly increases the production cost and height dimensions. There is. For this reason, a shock absorber is additionally provided, but an installation work for firmly fixing the shock absorber to both the foundation and the supported member is complicated.

[0007] Although the coil spring is immersed in damping liquid to promote the damping effect (for example, Japanese Unexamined Utility Model Publication No. 3-32229), simply immersing the coil spring in damping liquid effectively dampens the coil spring. Can not.

The present invention has been made in view of the above circumstances, and in the case of supporting a large load, disregards the conventional idea that a large coil spring is usually used, and divides it into a plurality of coil springs. An object of the present invention is to provide a vibration-isolation support body capable of coping with a large load by disposing a spring body in a deformed form.

[0009]

To achieve the above object, the present invention is configured as follows. That is, the vibration-isolation support of the present invention has a lower frame 12 having a predetermined area.
To form a coil spring housing on the
On the upper surface of the coil 12 occupies most of the coil spring
The outer peripheral wall 21 is erected, and the coil spring accommodating peripheral wall 21 is
By further partitioning the inside, the coil spring receiving portion
Is formed into a plurality of storage sections having a rectangular or circular cross section,
Each of the plurality of compartments formed in the compartment has a divided coil
And a damping material 22 made of silicone gel.
The lower ends of the plurality of split coil springs 13 are connected to the lower frame 1.
2 and the upper end is arranged so that the upper end covers each coil.
Frame 11 and its opening on the lower side of the upper frame 11
The cylindrical fin member 23 with the bottom fixed to the end is
With each end separated from the lower frame 12,
Suspended in the space inside the split coil spring 13 and damped
Immersed in the material 22, and further erected from the lower frame 12.
The stopper bolt 17 at the four corners of the upper frame 11
Through the bolt insertion hole and screw the stopper bolt 17
A mechanism for restricting the upward movement of the upper frame 11 by the mating nut 19.
The feature is.

[0010]

The vibration-isolating support of the present invention is used, for example, at a plurality of places at appropriate intervals below the floor member of a building, and is provided with a damping material provided around a plurality of coil springs.
Vibration is damped. In particular, according to the present invention, by using a plurality of coil springs, it is possible to cope with a large load without using a large coil spring. Is regulated and the damping effect is significantly improved, so that the vibration isolating effect can be performed efficiently.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 and 2 show one embodiment of the present invention. In each of the figures, a flat upper frame 11 and a lower frame 12 are arranged parallel to each other at predetermined intervals in the vertical direction. The lower frame 12 is configured to have a predetermined area that allows a plurality of, in the illustrated example, four, split type coil springs 13 to be provided in the upper portion thereof. A rubber plate 24 is attached to the lower surface of the lower frame 12, and the lower frame 12 is elastically supported.

On the upper surface of the lower frame 12, a coil spring accommodating peripheral wall 21 occupying most of the lower frame 12 is provided upright to form a coil spring accommodating portion.

The inside of the coil spring accommodating peripheral wall 21 is further partitioned, and a plurality of, in the illustrated example, four coil spring accommodating portions having a rectangular cross section are defined. The divided coil springs 13 and the damping material 22 made of a gel-like substance such as silicone gel are accommodated in each of the four compartments formed. Each split type coil spring 1
The lower end of 3 is fixed to the lower frame 12 via a washer 15, and the upper end is fixed to the upper frame 11 arranged to cover each coil via a washer 114.

The upper frame 11 is provided in substantially the same size as the lower frame 12, and L-shaped members 16 are connected to both side edges of the upper frame 11, respectively. Bolt insertion holes are provided at both ends of each L-shaped member 16. Stopper bolts 17 are fixed to the four corners of the lower frame 12 by screwing, and the stopper bolts 17 rising from the lower frame 12 are passed through the bolt insertion holes,
In the upper part of the L-shaped member 16, the plastic washer 1
The upper movement of the upper frame 11 is restricted by screwing a nut 19 into the screw portion of the stopper bolt 17 via the pin 8.
Further, on the upper surface of the upper frame 11, there are provided screw holes 20a, 2
0b is attached.

A bottomed cylindrical fin member 23 is fixed to the lower side of the upper frame 11 via an opening end thereof. The cylindrical fin member 23 having a bottom is located in the inner space of each coil spring 13 and has the washer 1 as described above.
14, is provided on the upper frame 11, and the tip thereof is arranged so as to be separated from the lower frame 12,
Further, it is suspended in the space inside each of the coil springs 13 and immersed in the damping material 22. Note that reference numeral 25
Is a foundation bolt for fixing the lower frame 12.

Hereinafter, Comparative Example 1 under the following conditions a to d,
2 and the respective attenuation ratios (C / Cc,
C: viscous damping coefficient, Cc: critical damping coefficient). Conditions; a. Vertical spring constant of one coil spring Kv1 = 233K
g / cm Vertical spring constant of four coil springs Kv4 = Kv1 × 4 / set = 932 Kg / cm b. Loading load per set; 3350 Kgf c. Attenuating material used; silicone gel having a penetration of 75 d. Input vibration; normal vibration

Comparative Example 1 As shown in FIG. 4, the upper frame 31, the lower frame 3
A vibration-isolating support body in which four coil springs 33 are provided between the two. When the vibration level of this vibration-isolation support was measured, the natural frequency was 48.52 Hz (Hertz), and the damping ratio was 0.5.
002.

Comparative Example 2 As shown in FIG. 5, the upper frame 41 and the lower frame 4
Two coil springs 44 and fin members 46 are provided between the two, and all the coil springs 44 are
Five vibration-isolated supports were immersed in a lump. When the vibration level of this vibration-isolation support was measured, the natural frequency was 18.66.
Hz (Hertz) and the attenuation ratio were 0.059.

Example When the vibration level of the vibration isolator of the present invention shown in FIGS. 1 and 2 was measured, the natural frequency was 12.33 Hz (Hertz) and the damping ratio was 0.125. . As is apparent from these results, the vibration-isolating support of the present invention accommodates an attenuating material in a divided coil spring accommodating portion partitioned and formed for each coil spring 13 and arranges a fin member immersed in the attenuating material. A large damping effect can be obtained from the provision.

In the embodiment shown in FIG. 3, the outer shape of the coil spring accommodating peripheral wall 21 is formed to have a plurality of arc shapes, and is combined with another arc-shaped partition wall.
The coil spring accommodating portions are formed as if they were independent cylindrical members and formed into four sections. In this case, the amount of the damping material 22 used can be reduced.

[0021]

As described above, according to the vibration-isolating support of the present invention, the vibration-isolating support is divided as a large-load-adaptive vibration-isolating support that can cope with a large load such as the entire floor member of a factory building. Since a plurality of coil springs (thus, one and one small coil springs) are used in parallel, manufacturing equipment and the like as in the prior art become large, and time and effort are required for manufacturing. It is not necessary to use a single large coil spring, which can be increased, so that the manufacturing cost can be reduced and the size can be reduced. Moreover, since the inside of the coil spring accommodating section is formed into a plurality of sections, and a plurality of divided coil springs are individually accommodated in the section accommodating sections and immersed in the damping material, the damping effect is remarkably improved. The vibration isolation function can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a vibration-isolation support according to the present invention.

FIG. 2 is a longitudinal sectional view along the line AA of FIG. 1;

FIG. 3 is a plan view showing another embodiment of the vibration-isolation support of the present invention.

FIG. 4 is a cross-sectional view showing a vibration-isolation support of Comparative Example 1.

FIG. 5 is a cross-sectional view showing a vibration-isolating support of Comparative Example 2.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Upper frame 12 ... Lower frame 13 ... Split-type coil spring 21 ... Coil spring accommodating peripheral wall 22 ... Damping material 23 ... Fin member

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Minoru Kuriyama 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division (72) Inventor Yoshimitsu Murahashi 20-1 Shintomi, Futtsu-shi, Chiba New Japan (72) Inventor Yuji Yida 20-1 Shintomi, Futtsu City, Chiba Prefecture Nippon Steel Corporation Technology Development Division (72) Inventor Hiroyuki Tanaka Ei Oda, Kawasaki-ku, Kawasaki-shi, Kanagawa 2-1-1 1-1 Showa Electric Wire & Cable Co., Ltd. (72) Inventor Katsumi Shimizu 2-1-1 Sakae Oda, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (56) Reference 3-32229 (JP, U) Fully open 1988-97739 (JP, U) Fully open 59-140418 (JP, U) Fully open 1988-33042 (JP, U) Fully open, 64-6441 (JP, U) ( 58) Fields surveyed (I nt.Cl. ⁷ , DB name) F16F 15/02-15/08 E04H 9/02 331 E04H 15/18

Claims (1)

(57) [Claims] 1. A lower frame 1 having an area of a predetermined size.
2 to form a coil spring housing,
Coil spring of a size occupying most of the upper surface of the arm 12
The housing peripheral wall 21 is erected, and the coil spring housing peripheral wall 21 is provided.
By further partitioning the inside of the coil spring housing
Section is divided into a plurality of rectangular or circular storage sections
Each of the compartments is divided into
Houses coil spring 13 and silicone gel damping material 22
Then, lower ends of the plurality of split coil springs 13 are moved downward.
With the upper end covering each coil.
Fixed to the upper frame 11 and
A cylindrical fin member 23 with a bottom fixed to the open end of
With its tip separated from the lower frame 12,
Hanging in the space inside each split type coil spring 13
Immersed in the damping material 22, and further from the lower frame 12
Attach the upright stopper bolts 17 to the four corners of the upper frame 11.
Through the bolt insertion hole drilled in the
Up movement of upper frame 11 is restricted by nut 19 screwed into
A vibration-isolating support body characterized by the following configuration .