JP3077926B2 - 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 a vibration-isolation support applied to the following technology. This technology is used to improve the working environment against vibrations that occur in factories, etc., and simultaneously eliminates both vertical and horizontal vibrations. A technology that is used in vibration isolators to make it difficult to transmit vibrations from rotating machinery to other parts, and to simultaneously eliminate both vertical and horizontal vibrations. This technology is used in vibration isolators to reduce vibrations input from the foundation, etc., and simultaneously eliminates both vertical and horizontal vibrations.

[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 a floor surface of a building around the large crane due to large vibration, which adversely affects the working environment of the worker. The importance of work improvement is increasing because the facilities in the production factory are being computerized and many precision instruments are being introduced.

[0003]

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 it is soft in the horizontal direction but hard in the vertical direction, the effect of reducing vibration in the factory by a crane or the like is small.

Further, it is conceivable that the floor member of the building is supported by a coil spring capable of withstanding a relatively large load, but there are the following problems. To make the coil spring correspond to a large load, the spring material may be made thicker and larger. However, manufacturing a large coil spring has disadvantages such as a considerable increase in cost and an increase in height, because the equipment is large and labor is increased as compared with a small coil spring. Further, the vibration generated by the coil spring itself is difficult to stop because the vibration damping effect is small. For this reason, a shock absorber is provided, but the installation work for firmly fixing the shock absorber to both the base and the supported member is complicated. Further, a coil spring is immersed in a damping liquid to promote a damping effect (for example, Japanese Utility Model Laid-Open No. 3-3222).
However, simply immersing the coil spring in the damping liquid cannot efficiently attenuate the coil spring.

Furthermore, when the equipment load in the building fluctuates, the natural vibration characteristics and the damping performance of the vibration-isolation support, which are the initial design conditions, are different, and the required vibration suppression effect cannot be exhibited. There is. That is, in many cases, the conventional vibration-isolation support is used as a stand for a machine or the like. Therefore, if the natural vibration characteristics and the damping performance are determined under the load condition at the time of design, it is not necessary to particularly consider a design change such as a load. In addition, since the load of the large-scale building itself is large, the natural vibration characteristics and the damping performance can be determined under the initial load conditions without being affected by the fluctuation of the equipment in the building. In this way, it is intended for areas where it is not necessary to consider load fluctuations until now,
If the facilities or the building were to be enhanced, in order to ensure the performance, the entire vibration-isolated support, the replacement of the walls and fins, the jack-up of the building, etc., were carried out with great effort and cost. Have been.

The present invention has been made in consideration of the above-described circumstances, and is capable of coping with a large load, efficiently performing a vibration isolating action, and easily coping with fluctuations in equipment load. The purpose is to provide a vibration-isolating support that can be used.

In order to achieve the above object, the present invention is directed to an upper and lower frame facing each other, a plurality of coil springs arranged in parallel between the upper and lower frames, and A partition plate that is provided and surrounds each of the plurality of coil springs; a damping material accommodated in each partition plate; and a hollow hole held by the upper frame and formed by the plurality of coil springs. in vibration isolation support body and a fin member immersing suspended Do is in the damping material respectively within front
The fin member is moved upward through a nut fixed to the upper end.
It is rotatably supported by the frame and has an inclined groove in the middle part
A first cylindrical body fitted inside the first cylindrical body.
And the upper end is fixed to the plate located above the upper frame.
And a vertical groove is provided at a position intersecting the inclined groove.
A second cylindrical body, which is fitted inside the second cylindrical body
It is provided movably in the vertical direction, and the inclined groove and
And the vertical groove intersect with each other.
A third cylindrical body having cylindrical projections,
The vertical movement of the third cylinder accompanying the rotation of the nut
The fin member is configured to be extendable and contractable so as to increase or decrease the immersion area of the fin member with respect to the damping material.

It is desirable that the attenuating material in the present invention is a gel-like substance such as silicone gel. The vibration-isolating support of the present invention is mainly applied to general buildings. In other words, the load of the equipment in the building occupies a considerable amount of the total weight of the load of the building itself, so the difference in the load fluctuation of the whole building tends to increase just by changing the equipment. This is effective when performance changes.

[0009]

For example, a plurality of coil springs are used by being disposed at a plurality of locations at appropriate intervals below a floor member of a building, and are subjected to vibration damping by damping members provided around a plurality of coil springs. In 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, and furthermore, the movement of the damping material is restricted by the partition plates respectively covering the plurality of coil springs. As a result, the damping effect is remarkably improved, so that the vibration isolating effect is efficiently performed. Further, according to the first aspect of the present invention, it is possible to adjust the horizontal damping performance and the natural vibration characteristic, and according to the second aspect of the invention, it is possible to adjust the vertical damping performance and the natural vibration characteristic. It can easily cope with fluctuations in load.

[0010]

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 these figures, a flat upper frame 11 and a lower frame 1 are shown.
2 are arranged opposite to each other. These frames 1
Four coil springs 13 are arranged in parallel between 1 and 12, and are fixed vertically through washers 14 and 15, respectively. L-shaped members 16 are connected to both side edges of the upper frame 11, respectively. These L-shaped members 16 and lower frame 1
2, a stopper bolt 17 is connected. The lower end of the stopper bolt 17 is screwed into the lower frame 12, and the upper part is an L-shaped member 1 through a plastic washer 18.
6. A nut 19 is mounted near the upper end of the stopper bolt 17.

A plate 20 is provided above the upper frame 11 at an appropriate interval. On the upper surface of the plate 20, screw holes 20a and 20b for attachment are provided. On the lower frame 12, a partition plate 21 surrounding each of the four coil springs 13 is provided. Attenuating material 2 made of a gel-like substance such as silicone gel in partition plate 21
2 are accommodated therein, and four coil springs 13 are buried therein. Fin members 23 suspended in the hollow holes of the four coil springs 13 and immersed in the damping material 22 are provided on the upper frame 11. The fin member 23 has a cylindrical shape. A rubber plate 24 is provided on the lower surface of the lower frame 12.
Is affixed. The fin member 23 is constituted by three cylindrical bodies as shown in FIG. That is, the first cylindrical body 23a is provided with an inclined groove 25 at an intermediate portion, a nut 26 fixed at an upper end portion, and slidably fitted into a through hole provided in the upper frame 11 through the nut 26. Supported. Both ends of the inclined groove 25 extend in the horizontal direction. The second cylindrical body 23b is the first cylindrical body 2b.
3a, and the upper end is fixed to the plate 20. A vertical groove 27 is provided in a middle portion of the second cylindrical body 23b at a position crossing the inclined groove 25.

The third cylindrical body 23c is
b, a cylindrical projection 28 is provided in the middle portion at a position where the inclined groove 25 and the vertical groove 27 intersect.
5, 27 are fitted. Reference numeral 30 indicates a foundation bolt for fixing the lower frame 12. In the above configuration, the first cylindrical body 23a is rotated by rotating the nut 26 in the gap between the upper frame 11 and the plate 20 by inserting a wrench or the like from the side of the gap. As a result, the cylindrical projection 28 located at the intersection of the inclined groove 25 and the vertical groove 27 moves along both grooves, and the third cylindrical body 23c
Moves up and down. Therefore, the fin member 23 operates to expand and contract, and changes the horizontal damping performance and the natural vibration characteristics. Further, as shown in FIG. 4, the partition plate 21 has a double structure composed of an outer plate 21a and an inner plate 21b. The outer plate 21a is fixed to the upper surface of the lower frame 12, and the inner plate 21b
Are slidably disposed on the upper surface of the lower frame 12.
The inner plate 21b is moved by a screw 29 screwed to the outer plate 21a. By making the partition plate 21 have a double structure as described above, the distance between the partition plate 21 and the coil spring 13 inside the partition plate 21 is changed, and the horizontal restraining width of the damping material 22 in the partition plate 21 is increased or decreased. be able to. Therefore, it is possible to adjust the vertical damping performance and the natural vibration characteristics.

[0013]

As described above, according to the vibration-isolating support of the present invention, by using a plurality of coil springs in parallel, a large load such as the entire floor member of a factory building can be obtained without using a large coil spring. The damping effect is remarkably improved by providing the partition plates respectively covering the plurality of coil springs, and the vibration isolating effect is efficiently performed. Furthermore, the fin member is configured to be expandable and contractable so as to increase or decrease the immersion area with respect to the damping material, so that the horizontal damping performance and the natural vibration characteristics can be adjusted . Therefore According to the present invention the damping performance and the natural vibration characteristics of the vibration isolation scaffold which is changed by variations in equipment loading, while installed without replacing the vibration isolation scaffold, be adjusted easily to the original design condition it can.

[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 an explanatory diagram of a structure of a fin member in the embodiment.

FIG. 4 is an explanatory diagram of a structure of a partition plate in the embodiment.

[Explanation of symbols]

 11 Upper frame 12 Lower frame 13 Coil spring 21 Partition plate 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, Showa Electric Wire & Cable Co., Ltd. (72) Inventor Katsumi Shimizu 2-1-1, Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (56) References JP-A-2-203034 (JP, A) JP-A-63-67437 (JP, A) JP-A-3-32229 (JP, U) JP-A 5-3674 (JP, U) JP-A-59-35754 (JP, U) ( 58) Fields surveyed ( Int.Cl. ⁷ , DB name) F16F 15/02-15/08 E04H 9/02 E04F 15/18

Claims (1)

(57) [Claims] An upper and lower frame facing each other;
A plurality of coil springs arranged in parallel between the lower frames,
Each of the plurality of coil springs provided on the lower frame
And the inside of each partition plate surrounding each
The received damping material, held by the upper frame, and
Each of the plurality of coil springs is suspended in a hollow hole.
And a fin member immersed in the damping material.
In the bearing body, the fin member is fixed to an upper end portion
Rotatably supported on the upper frame via a nut, intermediate
A first cylindrical body having an inclined groove in a portion, and a first cylindrical body
Side, the upper end is located above the upper frame
The lead is fixed to the position where it intersects with the inclined groove.
A second cylindrical body provided with a straight groove, and a second cylindrical body;
When it is fitted inside and installed movably in the vertical direction,
At a position where the inclined groove and the vertical groove intersect with each other.
And a third having cylindrical projections fitted in the two grooves.
And a third circle associated with the rotation of the nut.
A vibration-isolating support body, which is configured to be expandable and contractable so as to increase or decrease the immersion area of the fin member with respect to the damping material by vertical movement of a cylindrical body .