JPH0217240A - Vibration proof frame structure for installation - Google Patents

Abstract

PURPOSE:To facilitate the adjustment of a frame by forming a slit passed through from upward to downward at the circumferential end of the frame, providing an adjusting bolt having a semicircular removable vibration-proof rubber at a lower portion in the slit and capable of sliding in the slit and providing a holding groove right below the slit at a frame base. CONSTITUTION:Four slits 13 passed through from upward to downward are formed along the circumference of a frame 12 where an installation or the like are put, predetermined number of adjusting bolts 14 the heads of which are upward are inserted in the respective slits 13. A holding nut slidably along the slit is screwed with the adjusting bolt 14 with nipping the slit, the upper and lower positions and the flat face position of the adjusting bolt can be freely changed in the slit by a holding nut. Semicircular vibration-proof rubber 19 is fitted to the lower end of the adjusting bolt 14 and is held by a holding groove 21 provided at the base 11 of the frame 12 and positioned right below the slit 13. Accordingly, the position of the center of gravity, the horizontality set and the height set of installations can be adjusted easily.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to the structure of a vibration-proof frame for equipment such as buildings.

(Conventional technology) Conventionally, in order to prevent the sound and vibration of building equipment such as pumps, motor fans, and substation transformers, it has been common practice to use vibration-proof mounts to install these equipment. Until now, there have been many such vibration-isolating frames as shown in FIG.

That is, a plurality of elastic bodies 2 such as springs or rubber are installed at predetermined positions on a concrete base 1, a pedestal 3 is installed on top of the concrete base 1, and equipment such as a pump 5 and a motor 6 are installed via a base plate 4. I was supposed to.

(Problems to be Solved by the Invention) However, such a conventional vibration-proof frame has the following problems.

+1) Since the elastic body 2 for vibration absorption is fixed, the height of the pedestal cannot be adjusted.

(2) Similarly, since the elastic body 2 is fixed, it is not possible to adjust the hardness of the rubber or the spring constant in response to changes in the center of gravity or eccentricity, and if the spring constant cannot be adjusted, the predetermined vibration transmission rate cannot be secured.

In other words, normally the design is performed with a vibration transmission rate of about 5%, but
In reality, due to the eccentricity of the load 1 and the increased load of water inside the equipment, IR is concentrated in some elastic bodies 2, and vibration transmission increases only in those areas, which reduces the durability of the elastic bodies 2. It will cause damage.

(3) If the height cannot be adjusted after equipment is installed, it will not be easy to connect it to piping or hanging hooks.

(4) Because it is a fixed type, it is difficult to replace the elastic body 2, and when replacing it, the pump shade must be replaced, making the construction complicated.

An object of the present invention is to solve the conventional problems by providing a vibration-proof pedestal with a novel configuration.

(Means for Solving the Problem) In order to achieve the above object 1, in the structure of the anti-vibration mount for equipment according to the present invention, the pedestal and a part of the mount are arranged at a predetermined interval, and a predetermined The 1j; 12 mount has a pedestal on which the equipment is placed, and the pedestal 1j;
5 A predetermined number of adjustment bolts are arranged in each of the slits with their heads at -1°, and screws are screwed onto the adjustment bolts at the tops of the adjustment bolts and along the slits. At the same time as installing a sliding support nut,
At the lower end, a spherical anti-vibration rubber is removably attached to approximately ゛1, and on the F side of the +711 pedestal, support grooves with a circular cross section of approximately ゛11 are formed at the direct positions of each of the slits. , the side where the vibration isolating rubber at the lower end of each adjustment bolt is placed in the support groove.
It is characterized by consisting of 7.

(Example) Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1 to 1 show one embodiment of the present invention, and the anti-vibration Togane lO according to the present embodiment includes a pedestal pedestal 11 and a part thereof, which is arranged at a predetermined interval and equipped with predetermined equipment. (not shown) is mounted on a pedestal 12.

Four slits 1 3 are formed in the frame 12 along its periphery, and each slit 13
Inside, a predetermined number of adjustment bolts 14 are provided with their heads +4.
It is arranged vertically with a facing upward.

At the upper part of the adjusting bolt 14, as shown in FIGS. 2 and 3, a pair of -L part support nuts 15 are screwed onto the adjusting bolt 14 and are slidable along the slit 13 where i>iJ.
and a lower support nut 16 are attached.

That is, the upper support nut 15 and the lower support nut 16 are
In this embodiment, each has a stepped quadrangular prism shape, and each stepped surface 17 abuts the second and lower surfaces of the pedestal 12 at the position of the slit 13, and the main body tip 18 fits into the slit 13. For example, if the two-part support nut 15 is slid along the slit 13, the adjustment bolt 14 and the lower support nut 16 will move along the slit 13 in conjunction with this. It looks like a vine.

Further, at the end of each adjustment bolt 14, a substantially hemispherical vibration isolating rubber 19 is detachably attached with the hemispherical surface facing down.

That is, the vibration isolating rubber 19 for each adjustment bolt 14 is prepared in advance in several types with different diameters and hardness depending on the conditions as described later, and a nut 20 is integrally attached to the F portion of each vibration isolating rubber 19. The nut 20 is removably screwed and fixed to the lower end of the adjustment bolt 14.

Next, support grooves 21 each having a substantially semicircular cross section are formed on the upper surface of the +1iJ mount pedestal II at positions directly below each of the slits 1 and 3, that is, at positions below and west of each vibration isolating rubber 19,
The vibration isolating rubber 19 at the lower end of each adjustment bolt 14 is inserted into the support groove 21. 1'' to support the load of the I-marked pedestal 12 and predetermined equipment installed on its surface.

As shown in FIG. 3, vibration-proof stoppers 22 and 22 made of synthetic rubber or the like are fixed to both side surfaces of the support groove 21, respectively.

In this embodiment having such a configuration, first, the -L of each adjustment bolt 14 of the frame 12 is set in
By adjusting the lower position, the caulking frame 12 is set in a horizontal state.

For this adjustment, the head 14a of each adjustment bolt 14 is
By rotating in a predetermined direction with a tool such as a spanner, the vertical position of the pedestal 12 relative to the pedestal holder 11 can be changed, so that adjustment in the height direction can be easily performed from the upper side.

Next, after installing equipment at predetermined positions on the pedestal 12,
Work is carried out to correct the eccentricity of the load applied to the pedestal 12 due to the difference in weight of each piece of equipment and the installation position, and the pedestal 12 is accurately brought into a water state again.

That is, in order to correct the eccentricity, each adjustment bolt 14 is moved to a predetermined position along the slit 13 as shown in FIG. Adjustment is made so that the load borne by the adjustment bolts 14 is as uniform as possible.

In this case, first move only one specific adjustment bolt 14 upward so that the load is borne by the other adjustment bolts 14 and no load is applied to the adjustment bolt 14. 1 and tighten the upper support nut 15.
3 to a predetermined position, and then rotate the head 14a of the adjusting bolt 14 again so that the vibration isolating rubber 19 aligns with the support groove 2! The adjustment bolt 14 is pressed against the upper part to bear the upper load and returned to the suspended state, and then the other adjustment bolts 14 are moved to predetermined positions by following the same procedure.

When the adjustment of the movement of all the adjustment bolts 14 is completed, each adjustment bolt 1
4 in the height direction to accurately set the pedestal 12 in a horizontal state.

In this way, in this embodiment, the center of gravity position of the weight of the equipment and the frame can be easily adjusted accurately after installation of the equipment, and by equalizing the load borne by each adjustment bolt 14, the predetermined position can be adjusted. Anti-vibration performance can be ensured.

Furthermore, since the height can be adjusted after installation, it becomes easy to connect the equipment and piping such as these vibrators, improving work efficiency.

Furthermore, when it becomes necessary to replace the vibration isolating rubber 19 due to deterioration due to aging, etc., each adjusting bolt 14 is moved upward one by one in the same way as in the eccentric correction work described above, so that no load is applied. At the top, rotate the nut 20 of the anti-vibration rubber 19.

All you have to do is remove the vibration isolating rubber 19 from the adjustment bolt 14 and replace it with a new vibration isolating rubber 19, and there is no need to move the frame or equipment each time you replace it, unlike in the conventional case, and the work can be done extremely quickly. becomes.

Further, the readjustment at this time can be carried out very easily using the same procedure as described above.

Furthermore, if it becomes necessary to change the vibration transmission rate from the mount I2 for some reason after installation, the number of adjustment bolts 14 and vibration isolating rubber 19 may be increased or decreased, or the number of vibration isolating rubber 19 may be changed.
By changing the diameter and hardness of the

Further, in the event of an earthquake, by providing the counterintelligence stoppers 22 on both sides of the support groove 21, it is possible to effectively prevent the vibration isolating rubber 19 from shifting laterally, thereby improving safety.

Note that the present invention is not limited to the above embodiments,
For example, instead of the nut 20 for attaching and detaching the vibration isolating rubber 19,
Various modifications may be made without departing from the gist of the present invention, such as a spring-like fixture that can be fitted and latched onto the lower end of the adjustment bolt 14 may be formed integrally with the vibration isolating rubber 19. It goes without saying that this is possible.

(Effects of the Invention) The present invention is configured as described above, and includes a pedestal pedestal, and a pedestal placed above the pedestal at a predetermined interval and on which predetermined equipment is placed. A vertically penetrating slit is formed along its periphery, and a predetermined number of adjustment bolts are arranged in each slit with their heads facing upward, and the upper part of the adjustment bolt is screwed into the adjustment bolt. and installing a support nut slidable along the slit;
A roughly hemispherical anti-vibration rubber is removably attached to the lower end, and support grooves each having a roughly semicircular cross section are formed in the upper surface of the pedestal at a position directly below each of the slits, and the support grooves are formed in the support grooves. By installing anti-vibration rubber at the bottom end of each adjustment bolt,
Unlike the conventional example, it is easy to accurately adjust the center position and set the pedestal in a horizontal position after installing the mounting order on the pedestal.
This makes it possible to save labor in connecting piping and equipment, and also to replace vibration-proof rubber due to aging, and to increase or decrease adjustment bolts and vibration-proof rubber to change the vibration transmission rate. , easy replacement, and other useful effects.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram showing an embodiment of the vibration isolation mount according to the present invention, FIG. 2 is a perspective view showing the configuration around the adjustment bolt, and FIG. 3 is a sectional view of the main part showing the installation mode of the adjustment bolt. FIG. 4 is a conceptual diagram showing a conventional vibration isolation frame. 0... Vibration isolating frame, 2... Frame, 4... Adjustment bolt, 5.16... Support nut, 9... Vibration isolating rubber, 20... Nut, 1...
Support groove, 22... Anti-vibration stopper 11... Frame pedestal, 13... Slit,

Claims (1)

[Claims] The pedestal comprises a pedestal pedestal, and a pedestal arranged above the pedestal at a predetermined interval and on which predetermined equipment is placed, the pedestal having a slit vertically penetrating along its periphery, A predetermined number of adjustment bolts are disposed in each slit with their heads facing upward, and a support nut is attached to the upper part of the adjustment bolt and is capable of sliding along the slit. A roughly hemispherical anti-vibration rubber is removably attached to the lower end, and support grooves each having a roughly semicircular cross section are formed in the upper surface of the pedestal at a position directly below each of the slits, and the support grooves are formed in the support grooves. A structure of a vibration-proof mount for equipment, characterized in that a vibration-proof rubber is provided at the lower end of each adjustment bolt.