JPS6188036A - Vibro-isolating base plate - Google Patents

Abstract

PURPOSE:To reduce the inherent frequency of vibration of springs which support a base plate above an installation floor and are applied as many as required by arranging the springs in such a way that the number of springs performing spring actions may be reduced at the time of rolling vibration. CONSTITUTION:Of the springs 5 which support a base plate 4, two springs are arranged at positions C1, C2 which pass through the center G of the gravity of the entire system including a machine equipment 1 and a vibro-isolating table 3, are disposed close to a perpendicular plane Yg including a horizontal axis Y, and are symmetrical with each other with respect to another perpendicular plane Xg which passes through said center G of the gravity and includes a horizontal axis X made at right angles to the horizontal axis Y. The two springs are disposed in such positions on both-side parts 1d and 1e of the base plate 4 having the horizontal axis Yb. Four bolt fitting holes 10a-10d are made in a plurality of specified positions 10 on the base plate 4. To adjust the position of the gravity center of said entire system, the fitting position of a machine equipment 1 on the base plate 4 is made to be adjusted arbitrarily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine for preventing or absorbing shaking during operation of a machine that should be installed on a floor.
1. Mechanical devices in which the vibration of 1 mm is rocking around the horizontal axis, ie rolling vibration, such as automatic 4! 'The machine,
This invention relates to a vibration isolation table for supporting and supporting a refrigerator using a reciprocating compressor.

``Be arrogant'' - Figure 5 shows the mechanical equipment to be revised, such as automatic loom 1.
, is installed on the installation floor 6 via the vibration isolating table 3.

The self shown in the diagram! FJJ II! 11, yarn is fed into the loom on the left side of the figure, and the cloth woven within the loom is wound up on the right side of the figure. Here and now.

The flow direction of the yarn as it is woven is the horizontal axis X,
The horizontal axis perpendicular to the horizontal axis X is Y, and the vertical axis is 7. As is well known, in the automatic loom 1,
The illustrated reed 2 reciprocates in the horizontal axis X direction, and the unillustrated heald makes a vertical opening movement.jl 1. : These movements are the main cause, and the main vibration is the rocking around the horizontal axis 7, that is, the rolling vibration.

By the way, the vibration isolation table 3 includes a base plate 4 for supporting the automatic loom 1 and a base plate 4 that must be supported with respect to the floor G.
The number of springs for RR is 5.

Figure 7 (I) shows a typical example of the arrangement of these springs 5. In this representative example, six springs are used, and each installed sieve place (1.8 2
．． A3: Shown as B+, B2, and B3. The number of springs is determined by the stationary position of the installed machinery. (;(If the fencing device is relatively heavy, the number of springs will increase.As shown in the figure, the arrangement of six springs is along the horizontal axis Y and the horizontal axis
They are arranged in two rows on both sides 1b and lc of the upper base plate. The reference lines in this spring arrangement are the center line Yo that is parallel to the horizontal axis X and forms the center of the base plate 4, and the center line It is a line. In other words, the spring installation location for medium heat in each row is located on the center line XO, and the other spring locations M6
The spring arrangement cylinders Δ2 and BQ are positioned at equal intervals from the center line Xo so as to be symmetrical to each other. Well, each location A+ and B I,
A 2 and 82 and A3 and 83 are located symmetrically with respect to the center line Yo.

On the other hand, if the weight of the machinery 1 is relatively small, the number of springs is set to four as shown in FIG.
Installation location AI at each of the four corners of the base plate 4.

A3:B+, placed in B3.

A side view of FIG. 7(T) is shown in FIG. 7<II).

In FIG. 7 ([), now automatic looms 1 and 1115
Assume that the center of gravity G of the entire system including the shaking table 3 is at the position shown in the figure near the vertical plane that meets the center line Y (the center G is at the intersection of the center lines x, y) (Not necessarily).

If the automatic loom 1 is operated and a rolling motion occurs in the direction of the arrow shown in the figure with the center of gravity G, that is, the horizontal axis Each spring 5 arranged at six locations A+, A2 and A3 supports the tilting weight, while if the automatic loom 1 is on the right side], three installation locations B+ in the other row.

B2. Each spring/15 placed in B3 will support the tilting load. That is, no matter which direction the automatic fli machine 1 is tilted, all the springs in one row will exert a spring action.

By the way, in this type of vibration isolation table, it is very important to reduce the vibration amplitude of the entire system and to reduce the imaging transmission rate. In order to accomplish this, it is necessary to reduce the natural frequency of the rocking swing U around the horizontal lTh1l Y.

However, in the conventional vibration isolating table having the above-mentioned spring arrangement, as described above, all the springs perform a spring action as they are, so it is not easy to reduce the natural number of oscillations.

Yoshiie LL Therefore, the technical problem to be solved by the present invention is 0! The problem is to reduce the number of springs that provide spring action when rolling vibrations occur, without reducing the number of springs needed to support the stationary heavy base of installed machinery.

In order to achieve the above-mentioned technical problems, the present invention has accomplished the following.

In addition, on a vibration isolation table that is equipped with a sufficient number of springs to support the stationary arms and noses of the mechanical devices to be installed, two springs out of the required number should be attached to each of the mechanical devices to be installed. Near the vertical plane that passes through the center of gravity of the entire system including the vibration isolation table and includes the horizontal @Y, which is the center axis of rolling vibration, and also passes through the axis and the horizontal axis Y
One is arranged on each side of the base plate on the horizontal axis Y symmetrically with respect to the vertical plane including the horizontal axis X perpendicular to the base plate, and on the base plate,
- To adjust the center of gravity of the storage system, move the machinery horizontally! (The structure is such that bolt mounting holes 10a to 10d or bolt mounting grooves whose positions can be freely adjusted in the IIX and Y directions are provided.

-1- In Mr. Kikaku 1, the above two springs are:
[2 (Although it supports the stationary small amount of jk equipment, l
Since it is located at the +a fishing center position, there is almost no spring action against rolling vibrations around the horizontal axis Y. Therefore, if the total number of springs is six, it is the other four springs that perform the spring action against rolling vibration, and the conventional example shown in Fig. 7 (I) Compared to that II! ! By arranging the springs in this way, the natural frequency of the entire system can be reduced by tJs, thereby reducing the vibration amplitude and vibration transmissibility. becomes possible.

By the way, even if the machine-made four items are the same type of equipment,
Although there are variations in the position of the center of gravity, if the combination described above is used, the binding device can be installed by adjusting the position in the 7-axis X (15 and 15 and Y directions) with respect to the base plate, so the overall It becomes possible to accurately position the two springs along the above vertical plane that includes the horizontal @Y.In this way, the desired technical problem can be solved by the above-mentioned 1+'+i formation. The structure is simple (Saro.

Two ties ・ Examples of the present invention will be described in detail below.

Self + JJ MA as an example on the 1st plan, 2 defenses, 11 units, 3
This shows the state in which Machine 1 is installed. The anti-armoring stand 3 is equipped with a rectangular-shaped base plate 4 for supporting the automatic type (frame 1), and a plurality of springs 5 for supporting the base plate 4 against the floor g2.

FIG. 2(I) shows a planar state of the 11-block 3 in FIG. 1. Into the figure t, A5 :C+, C= :B
a, 85 indicates the installation locations of the springs 5. As shown in the figure, in this embodiment, six springs are used, and therefore there are six installation locations. There is.

In this embodiment, the spring arrangement is based on two vertical planes XO and Y* that are perpendicular to each other.

One vertical plane Y9 is the self that should be installed! PJl loom 1
It passes through the center of gravity G (see FIG. 2 (II)) of the entire system including the vibration isolating table 3 and the horizontal axis Y is the 80 plane. M1
[, the vertical plane Xg is a plane that passes through the center of gravity G and includes a horizontal axis X that is perpendicular to the horizontal axis Y.

Location of 2 springs out of 6 springs C+
, C2 is above! In the vicinity of the octagonal plane YO, preferably on the vertical plane Yg, and symmetrically with respect to the vertical plane x9, the positions j;

On the other hand, go to the installation location for installing the two pairs of springs 4. A5: Bl and B5 are located on both sides 1b and lc of the upper base plate on the horizontal axis means each installation location Aa, to: Ba, B
5 is located as close as possible to the 9e ii7 and X plane.

The proximity of the shira's installation locations Aa, A5; Ba, B5 to the vertical plane x9 is;
W! It is determined by the balance ↑1 of f;;1 with respect to the base plate 4.

In other words, when the Φ base of the automatic loom 1 to be installed is relatively large and unbalanced, the other four springs are placed in the fourth As shown in the figure, the installation location A at the four corners of the base plate 4
+, A3; Bl, installed at position d of BE. On the other hand, myself! 111! Q If the weight of k21 is relatively small and the balance is good, as shown in Figure 5; 4X1, the number of springs is reduced from 1.2 to 4, and a pair of springs , vertical plane x 9
Go to the installation joint along the way.

It can also be installed in B2.

Now, FIG. 2(n) shows a side view 2 of FIG. 2(I). In Figure 2 (I[), there is d5 and automatic class l? i + is operated and the entire system rocks in the direction of the arrow shown! 1J
If J occurs, the entire system will move 11i1 toward the left in the figure.
In this case, the springs 5 installed at the installation locations Aa and A5 in the left row receive a tilting load, while the entire thread tilts to the right in the figure. ,B5
The two springs 5 installed at n receive the load. In other words, the spring 5 installed at the installation point CI, (', 2 along the vertical plane Y , its proportion is significantly smaller than that of the curved spring, and its main purpose is to support the automatic edge and the static pressure of the base plate 4 (according to this book, it is rated as 3).

In the embodiment shown in FIG. 5, C is the spring installation location A.
Since x and B2 are also on the vertical plane XC+, the horizontal l of the entire system
Regarding the rolling vibration around 1llllI× (this rolling vibration is much smaller than the rolling motion around the horizontal axis 7), the spring action is almost 4
At t, move horizontally 1iIII+X, Y in the direction of
Regarding rolling vibration, the overall system is unique +1ii
Movement can be kept to a minimum.

Furthermore, even if the actual/li example shown in FIG. 2 (I) is a5, if compared to the embodiment shown in FIG. Because they are closer together, it is possible to more effectively reduce the natural frequency of the entire system due to rolling vibration around the horizontal axis 7. In other words, these installation locations Aa and A5
:Ba, 85 should be placed close to the vertical plane X (I) as long as the balance of the whole system is guaranteed; It is possible to reduce and cover the good ga-dou luci.

By the way, as shown in FIG. 2(I), four bolt mounting holes 108 to 10d are provided at each of a plurality of predetermined locations 10 on the base plate 4.
is formed. The pair of mounting holes 10a and 10b are arranged on a line parallel to the horizontal axis Y, and the pair of mounting holes 10a and 10b are arranged on a line parallel to the horizontal axis Y.
0c and 10d are arranged on a line parallel to the horizontal axis X. These holes are mounting holes for fixing the automatic structure [1] with bolts, and the mounting state is shown in Figure 3 (I
). FIG. 3 (I'l shows a pair of holes 10c, 10d along the horizontal axis
A state in which the mounting flange 11 of ii is fixed by screwing a bolt 12 into one of the mounting holes 10c and a nut 13 fixed to the lower surface of the base plate 3 is shown. Which of the four mounting holes 10a to 10d to use is determined by the center of gravity position of the automatic Qj"6Q1, which should be the installation size, and the spring placement location of -7j on the vertical plane Ytl C+, C;! are selected.In other words, the horizontal axis X relative to the base plate 4 of the automatic loom 1,
6 and the positional adjustment in the Y-axis direction is a%.

The number of the above-mentioned holes 1 to 1 may be determined according to the required adjustment, and as shown in FIG. - take f'' groove 14 may be used.

[Brief explanation of the drawing]

Figures 1 to 5 show embodiments of the present invention; Figure 1 is an overall perspective view showing an automatic loom installed on a vibration isolation stand; Figure 2 (1) is a vibration isolation stand in Figure 1; Plan view of Figure 2 <n>
Figure 2 (I) shows a side view of the vibration isolation table, and Figure 3 (I) shows a side view of the vibration isolation table.
) is a cross-sectional view of the main part of Figure 1, which does not show the state in which the automatic plate ■ is attached to the vibration isolation table, and Figure 3 <n> shows the bolt holes 1; ^1 formed on the plywood of the vibration isolation table. Figures 4 and 5 are schematic plan views of the anti-vibration table for other embodiments, respectively.
FIG. 6 is an explanatory sectional view showing a state in which an automatic loom is installed on an installation floor via a vibration isolating table according to a conventional example, and FIGS.
f) is a plan view and a side view of the vibration isolating table shown in FIG. 6, respectively, and FIG. 8 is a plan view of a vibration isolating table 1 showing another conventional example. To+, A2. A3: 8+, 82. Ba:C+
. C2...Spring installation location, X-X...Horizontal Ii
1+, Y-Y...horizontal axis, Z-7...vertical axis, Xo
, Y... Chuo line, XG, Y! ]...Vertical plane, 1
...Automatic loom, 111° 1C...Horizontal axis ... Base plate, 5 ... Spring, 6 ... Installation floor, 10 ... Fixing point, 10a-1
゜d...Bolt mounting hole, 11...Mounting flange, 1
2...Fixed port l-, +3...Natsuto, 14...
Bolt mounting groove. Patent Issuer Agent Kobe Steel, Ltd.
Two patent attorneys: Aohaku, Ao, and Haga Figure 2 (I) Y Figure 4

Claims (1)

[Claims] 1. Mechanical devices whose main vibration occurs around the horizontal axis Y (1.
) and a base plate (4) that supports the mechanical devices (1), and the base plate (4) needs to be supported with respect to the installation floor (6). Number of springs (5)
In the vibration isolation table (3), two of the required number of springs (C_1, C_2) are installed.
Pass through the center of gravity (G) of the entire system including the mechanical equipment (1) to be installed and the vibration isolation table (3), and be in the vicinity of the vertical plane (Yg) that includes the horizontal axis Y, and the axis center ( G) and both sides of the base plate on the horizontal axis Y (
1d and 1e), and on the base plate (4),
In order to adjust the position of the center of gravity (G) of the above-mentioned entire system, there are bolt mounting holes (10a to 10d) or bolt mounting grooves (14) that can freely adjust the position of the machinery 1 in both horizontal axes X and Y directions.
A vibration isolation table characterized by being provided with. 2. Other springs (A_4, A_5, B
_4, B_5; A_2, B_2) on each of the both sides (1b, 1c) of the base plate on the horizontal axis 2. The vibration isolation table according to item 1, wherein an even number of vibration isolation tables are arranged symmetrically and close to each other.