JPH06236187A - Supporting mechanism for vibration proof and sound proof device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent noise from being generated due to vibration of the soundproof panel itself installed to reduce the noise of the prime mover, and to effectively cool the antivibration rubber. [Structure] A pedestal 1 to which a device 5 of a vibration source is attached is supported above a substrate 3 by a vibration proof rubber 3, and is fitted to a bottom plate 8 for fixing a sound proof panel 7 with play in the vibration proof rubber. A loose fitting hole 10 is provided, the bottom plate is provided between the underframe and the substrate, the substrate and the bottom plate are independently fixed to the foundation, and a ventilation fan 9 is provided on the soundproof panel to ventilate the space between the substrate and the bottom plate. It is a support mechanism for the vibration and soundproofing device that is configured in the passage 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support mechanism for a vibration and soundproofing device.

[0002]

2. Description of the Related Art A prime mover for driving a load device such as a compressor, a generator or a pump, that is, an engine or a motor is supported by using a vibration isolator such as a rubber vibration isolator or a vibration isolator. Vibration is reduced by reducing the vibration transmitted to the foundation through the mechanism, and is also enclosed by a box-shaped soundproof panel for soundproofing.

Therefore, conventionally, for example, as shown in FIG. 3, a bottom plate b for fixing a soundproof panel a is fixed on a foundation d by fixing legs c, and a vibration-proof rubber, a vibration-proof spring, etc. are mounted on the bottom plate b. The base f is supported via the vibration isolator e, and the prime mover g and the load device h are mounted on the base f. A box-shaped soundproof panel a surrounding the prime mover g and the load device h is fixed on the bottom plate b. When the vibration isolator e is a rubber vibration isolator, a ventilation fan i and a ventilation port j are provided in the soundproof panel a to prevent the heat deterioration thereof to prevent a temperature rise in the space inside the soundproof panel a. There is.

In the above conventional example, the prime mover g and the load device h are both attached to a common base f to provide vibration isolation. However, only the prime mover is isolated from vibration and the prime mover and the load device vibrate. There are also those that are connected by using a belt or a joint that absorbs.

[0005]

In the above-mentioned structure, the vibration of the prime mover g is transmitted from the vibration isolator e to the bottom plate b and then to the soundproof panel a, which itself vibrates to generate noise. Therefore, although the noise itself generated from the prime mover g and the like can be reduced, the soundproofing effect is diminished.

When a vibration-proof rubber is used as the vibration-proof body e, it is necessary to provide a ventilation fan i and a ventilation port j.
In order to efficiently position the anti-vibration rubber in the air flow, some ingenuity is required, and if the ventilation port j is to have a sound deadening structure, the required space becomes large. The present invention aims to solve such problems.

[0007]

In order to solve the above-mentioned problems, according to the present invention, a pedestal to which a device of a vibration source is attached is supported above a substrate by a vibration-proof rubber and a sound-proof panel is fixed. The bottom plate is provided with a loose-fitting hole that fits the vibration-proof rubber with play, the bottom plate is provided between the underframe and the substrate, and the substrate and the bottom plate are independently fixed to the foundation, and
We propose a support mechanism for anti-vibration and soundproofing equipment, which has a ventilation fan on the soundproof panel and the space between the substrate and the bottom plate is a ventilation passage.

In the present invention, in the support mechanism,
It is proposed to install a sound absorbing material in the ventilation passage to create a sound deadening structure.

[0009]

[Operation] The base with the device of the vibration source is supported by the base plate fixed to the foundation through the anti-vibration rubber, and the bottom plate for fixing the soundproof panel is fixed to the base independently of the base. Therefore, vibration is not transmitted from the base to the bottom plate and the soundproof panel, and therefore the soundproof panel does not vibrate.

By the operation of the ventilation fan, air is ventilated between the inside and outside of the soundproof panel through the ventilation passage formed in the space between the substrate and the bottom plate and the loose fitting hole of the bottom plate. Therefore, the anti-vibration rubber fitted in the loose fitting hole is always placed in the ventilation air flow to be efficiently cooled.

Since the ventilation passage is formed in the space between the substrate and the bottom plate, it is not necessary to form it on the outside of the soundproof panel or the like, and the sound deadening structure can be realized in a small required space.

[0012]

Embodiments of the present invention will now be described with reference to the drawings.
FIG. 1 shows an embodiment of a support mechanism according to the present invention in a use state. In this figure, reference numeral 1 is a base, and the base 1 is supported above the substrate 2 by a suitable number of vibration-proof rubbers 3. The substrate 2 is fixed to the upper side of the foundation 4 by foundation bolts (not shown) or the like. A prime mover 5 and a load device 6 are supported on the base 1. The prime mover 5 is an engine, a motor, or the like, and the load device 6 is a compressor, a generator, a pump, or the like as appropriate.

Reference numeral 7 is a soundproof panel formed in a box shape by a top plate and side plates, and this soundproof panel 7 is fixed to and supported by a bottom plate 8. A ventilation fan 9 is provided on the top plate of the soundproof panel 7, and the ventilation fan 9 is configured to discharge the air in the soundproof panel 7 to the outside. Besides, the ventilation fan 9 may be provided on the side plate.

The bottom plate 8 is provided with a loose fitting hole 10 at a position corresponding to the anti-vibration rubber 3. By fitting the loose fitting hole 10 and the anti-vibration rubber 3, the bottom plate 8 is moved to the underframe 1. And board 2
I'm wearing it in between. Further, a hanging portion 11 is provided on the periphery of the bottom plate 8.
And the fixing portion 12 bent outward from the lower end thereof.

An appropriate space is provided between the upper surface of the substrate 2 and the lower surface of the bottom plate 8 to form the ventilation passage 13. An air circulation port 19 is provided at an appropriate place such as the hanging portion 11 of the bottom plate 8 as shown in FIG. The sound absorbing material 14 is attached to the entire lower surface of the bottom plate 8, and the upper surface of the substrate 2 and the bottom plate 8 are attached.
The sound absorbing material 15 is also attached between the lower surfaces of the above, so that the latter sound absorbing material 15 has, for example, as shown in FIG. 2, a ventilation passage 13 having a sound deadening structure similar to the sound deadening path in the muffler of the engine. Formed and pasted.

In the above structure, the substrate 2 is fixed to the base 4 by bolts (not shown), and the fixing portion 12 of the bottom plate 8 is fixed to the base 4 by bolts 16. Next, by supporting the prime mover 5 and the load device 6 on the base 1 and connecting their output shafts 17 by a joint 18 to complete a predetermined installation work, by covering the soundproof panel 7 and fixing it to the bottom plate 8. The use state of FIG. 1 can be obtained.

The above-mentioned installation work is effective for a large-sized apparatus, but when constructing a small-sized mass-produced apparatus, FIG.
It is assembled in the factory to the state corresponding to the usage state, and the substrate 2 and the bottom plate 8 are supported via spacers to be transported to the installation site, and the spacers are removed on the spot and fixed to the foundation 4 as described above. You can also do it.

In the use state of FIG. 1, since the base 1 and the bottom plate 8 are not directly connected, the vibration transmitted from the prime mover 5 to the base 1 is not transmitted to the soundproof panel 7, and thus the soundproof panel 7 is used. It is possible to prevent the generation of noise due to the vibration of the.

The operation of the ventilation fan 9 causes air to flow into the bottom plate 8.
The air flows into the space below the bottom plate 8 through the air circulation port formed in the hanging part 11 and the like, and then flows from the ventilation passage 13 into the space inside the soundproof panel 7 through the loose fitting hole 10. Then, it is discharged from the space inside the soundproof panel 7 by the ventilation fan 9. Since the air flowing in this way always passes through the portion of the vibration-proof rubber 13, the vibration-proof rubber 13 can be effectively cooled to prevent thermal deterioration and prolong the life.

Therefore, the air flow rate can be reduced as compared with the conventional case, the capacity of the ventilation fan 9 can be reduced, and the noise caused by ventilation can be reduced. Noise caused by ventilation and noise of the prime mover 5 through the ventilation passage 13 can be further reduced by providing the ventilation passage 13 with the above-described silencing structure.

[0021]

As described above, the present invention has the following effects. It is possible to prevent the generation of noise due to the vibration of the soundproof panel, and to enhance the soundproof effect of the soundproof panel. The anti-vibration rubber can be effectively cooled even with a small amount of ventilation, the thermal deterioration of the anti-vibration rubber can be prevented and the life of the anti-vibration rubber can be extended, and the noise-reducing structure is easy to contribute to noise reduction.

[Brief description of drawings]

FIG. 1 is a vertical cross sectional view showing an embodiment of a support mechanism of the present invention.

FIG. 2 is a cross-sectional explanatory view taken along the line AA of FIG.

FIG. 3 is a vertical cross-sectional explanatory view showing a conventional example of a support mechanism.

[Explanation of symbols]

 1 floor 2 substrate 3 anti-vibration rubber 4 foundation 5 prime mover 6 load device 7 soundproof panel 8 bottom plate 9 ventilation fan 10 loose fitting hole 11 hanging part 12 fixing part 13 ventilation passage 14 and 15 sound absorbing material 16 bolt 17 output shaft 18 joint

Claims (2)

[Claims] 1. A pedestal to which a vibration source device is attached,
A bottom plate, which is supported above the substrate by a vibration-proof rubber and which fixes the sound-proof panel, is provided with a loose-fitting hole that fits into the vibration-proof rubber with play, and the bottom plate is provided between the underframe and the substrate. And the bottom plate are independently fixed to the foundation, the soundproof panel is provided with a ventilation fan, and the space between the substrate and the bottom plate is configured as a ventilation passage. 2. The support mechanism for a vibration and soundproofing device according to claim 1, wherein a sound absorbing material is installed in the ventilation passage to provide a sound deadening structure.