KR101916805B1 - Floor structure for protecting noise and vibration from MRI - Google Patents

Abstract

The present invention relates to a bottom structure of an indoor space in a hospital where large and heavy medical equipment is installed. In an exemplary embodiment, a bottom structure of an indoor space in which an embroidery equipment is installed includes a plurality of elastic blocks An elastic support layer provided on the plurality of elastic blocks, the metal support layer being integrally formed by integrally joining the edges of the unitary metal plates, and an elastic support portion placed on the metal support layer and supporting the M & The floor structure for noise and vibration reduction for ARI equipment is presented.

Description

Background Art [0002] Floor structure for protecting noise and vibration from MRI

The present invention relates to a floor structure of an indoor space in a hospital in which large and heavy medical equipment is installed, and particularly relates to a floor structure for noise and vibration reduction adapted to medical equipment having high operating noise such as MORAI.

One of the large and heavy medical equipment installed in hospitals, the MRI device, weighs several tons. The MRAE device is intended to image the emission energy of a hydrogen atom as it applies a high frequency to a hydrogen atom of water which accounts for 80% of the human body.

The gradient coil of the MRAE device changes the intensity of the main magnetic field temporarily by varying the position to change the homogeneity of the magnetic field, thereby enabling the section of the part to be photographed to be set. And are arranged so as to be paired with each other in the X, Y, and Z directions so as to obtain various cross sections, so that various cross-sectional images can be obtained by intermittent operation when the embroidery apparatus operates. The operation of such a gradient coil induces a large noise and vibration due to the frequent intermittent current supply for a short time.

As a result, a large operation sound is transmitted to the room where the M ary equipment is installed and the other rooms adjacent to each other, in particular, the lower floor, and this inconvenience is great. Floor construction is necessary to prevent noise transmission in the room where M ary e equipment is installed. In the prior art, since dustproof and soundproofing structure derived from the general building industry is adopted and the characteristics of the embroidery equipment can not be taken into consideration, sufficient dustproofing and soundproofing effects are not obtained.

Korean Patent Publication No. 10-2014-0093651 (July 28, 2014) Korean Patent Publication No. 10-2010-0131151 (December 15, 2010)

The present invention proposes a floor structure for achieving a more effective vibration-proof and sound-proofing effect in accordance with the characteristics of the M-ary equipment.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an embodiment of the present invention, there is provided a bottom structure of an indoor space in which an M & E i equipment is installed, comprising: an elastic support layer having an elastic block in which a plurality of blocks are dispersed on a base layer; A floor structure for noise reduction and vibration reduction for an electronic device, comprising: a metal supporting layer which is integrally formed with the edges of a unit metal plate and which is integrally formed; and an elastic supporting portion which is placed on the metal supporting layer, .

At this time, the unit metal plate may be made of a paramagnetic material.

Between the metal support layer and the elastic support portion, a vibration damping sheet for reducing vibration, an insulation sheet for shielding an external current, and a shield sheet for shielding electromagnetic waves can be laminated.

Further, a plurality of stopper blocks having a height lower than that of the elastic blocks may be dispersedly disposed between the elastic blocks.

Further, the mounting plate is formed in the lower surface of the edge of the unit metal plate, and the unit plates and the joint plate are bolted to the groove formed by the mounting seat of the unit metal plates adjacent to each other, Can be connected.

According to another embodiment of the present invention, a metal supporting plate is disposed on the upper portion of the elastic block, and a screw hole is formed in the unit metal plate corresponding to the upper position of the metal supporting plate. And the height of the unit metal plate can be adjusted through a height adjusting screw.

According to the embodiment of the present invention, it is possible to effectively absorb and reduce vibration and noise of the M-ary equipment by forming the double elastomer supporting structure, and it is possible to prevent image distortion and correct image acquisition.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view illustrating a bottom structure for noise and vibration reduction for an M-Ar eye apparatus according to an embodiment of the present invention. FIG.
2 is a perspective view illustrating a portion of a metal support layer according to the embodiment shown in FIG.
3 is a plan view showing a use state of the embodiment shown in Fig.
FIG. 4 is a schematic view illustrating a state of use of a bottom structure for noise and vibration reduction for the M-ary equipment according to the embodiment shown in FIG. 1; FIG.
5 is a cross-sectional view illustrating a coupling relationship between an elastic support layer and a metal support layer employed in a floor structure for noise and vibration reduction for an M-ary equipment according to another embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure, function, and operation of the floor structure for noise and vibration reduction for the M < JAI device according to the present invention will be described with reference to the accompanying drawings. It should be noted, however, that the same reference numerals are used for the same or similar components throughout the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, therefore, are not to be construed as limiting the technical spirit of the invention. It is to be understood that the invention is not to be limited by any of the details of the description to those skilled in the art from the standpoint of a person skilled in the art that any or all of the drawings shown in the drawings are not necessarily the shape,

In FIG. 1, the thickness of each layer or sheet is exaggerated so that it can be easily recognized.

1 to 3 relate to a floor structure for noise and vibration reduction for the M < RTI ID = 0.0 > Ah < / RTI >

A bottom structure according to an embodiment of the present invention includes an elastic support layer 10, a metal support layer 20, and an elastic support portion 30. The vibration damping sheet 40, the insulating sheet 50 and the shield sheet 60 are further disposed between the metal supporting layer 20 and the elastic supporting portion 30 in a further configuration. At this time, the configuration of at least one of the vibration damping sheet 40, the insulating sheet 50, and the shield sheet 60 may be omitted according to the embodiment, and the stacking order may also be changed.

The elastic support layer 10 has a plurality of elastic blocks 11 dispersed and disposed on a base layer 200 finished with a concrete. The elastic block 11 reduces the vibration transmitted to the base layer 200 by absorbing and reducing the vibration transmitted from the upper portion.

The elastic block 11 may be made of a synthetic rubber material having excellent damping performance, for example, a combination of a natural rubber and a styrene butadiene rubber. One such material is Korean Patent Laid-Open No. 10-2011-0011010 (entitled "High Damping Bush Rubber Composition").

The vertical height of the elastic support layer 10 can be varied in various ways, for example, 15 to 30 mm.

The metal support layer 20 is placed on the plurality of elastic blocks 11, and the unit metal plates are connected to each other to form a single layer. Fig. 2 relates to the connection method of the unit metal plate 21. Fig.

The unit metal plate 21 is made to have an appropriate size so as to pass through the entrance of the indoor space. The mounting seat 211 is formed to be recessed on the upper edge of the unit metal plate 21 and the mounting plate 211 is attached to the mounting plate 211 in order to connect the two unit metal plates 21 with which the edges meet side by side. At this time, the width of the joint plate 22 corresponds to the width of the groove formed by the neighboring mounting seat 211, so that the gap between the edges of the adjacent unit metal plate 21 is clogged in the middle of the joint plate 22, . On the other hand, a reinforcing plate 24 is attached to the lower surface of the unit metal plate 21 in correspondence with the joint plate 22.

The edges of the joint plate 22 and the unit metal plate 21 and the reinforcing plate 24 are physically fastened through a plate head bolt (not shown) or the like.

FIG. 3 shows an interior space in which the embroidery equipment 300 is placed in the center. The unit metal plates 21 cut in an appropriate size and carried are connected to each other to form a metal supporting layer 20 corresponding to the bottom size. In the illustrated embodiment, sixteen unit metal plates 21 are used, and the size and number of the unit metal plates 21 can be variously changed according to the area and structure of the indoor space.

The integrally assembled metal support layer 20 allows the elastic blocks 11 dispersed and arranged to be integrally operable. The load of the heavy embroidery equipment 300 placed at the center is uniformly transmitted to the respective elastic blocks 11 so that the vibration transmitted from the embroidery equipment 300 is uniformly dispersed in most of the elastic blocks 11, The vibration transmitted to the base layer can be effectively reduced.

Furthermore, the material of the unit metal plate 21 can be made paramagnetic. Concretely, copper or aluminum may be used as a paramagnetic metal. In this case, it is possible to prevent the electromagnetic force formed in the M ary eye device from being transmitted to the lower layer. Also, the material of the joint plate is made of the same material as the unit metal plate, and it is possible to prevent warp or the like due to the difference in thermal expansion coefficient.

The thickness of the metal supporting layer 20 can be variously changed. The thickness of the metal supporting layer 20 can be set to 12.5 mm or more in consideration of securing the structural rigidity of the unit metal plate 21 and shielding performance of the electromagnetic wave.

The damping sheet 40, the insulating sheet 50 and the shield sheet 60 are further lifted on the metal supporting layer 20. [ These configurations will be described later.

The elastic blocks 11 supporting the metal supporting layer 20 formed by connecting the plurality of unit metal plates 21 are disposed along the boundary where the adjacent unit metal plates 21 are assembled. And is disposed at the center of the unit metal plate 21 formed in a large area to prevent sagging of the center portion.

Particularly, the elastic blocks 11 are arranged in a concentrated manner in the center of the room where the MOREE EQUIPMENT 300 is placed, so that the elastic blocks 11 can be installed to support the load of heavy equipment.

On the other hand, on the metal supporting layer 20, the elastic supporting portion 30 supporting the M oda equipment rises.

The elastic supporting portion 30 is a member that directly supports the housing of the M / E equipment, and absorbs vibration to reduce vibration transmitted to the metal supporting layer 20. [ Like the elastic block 11 described above, the elastic supporting portion 30 can be made of a synthetic rubber material having excellent attenuation performance.

In the case where the support leg 301 is provided in the housing of the M arithmetic apparatus, the elastic support portion 30 is installed to support each support leg 301.

3, the bottom structure provided according to the embodiment of the present invention includes an elastic supporting layer 10, a metal supporting layer 20, an elastic supporting portion 30, and an embroidery equipment 300 from the base layer 200, . The embroidery equipment 300 has a mass of approximately 5 to 7 tons, and the elastic support 30 serves as an elastic body for reducing vibration of the embroidery equipment for the first time. Also, the metal support layer 20 acts as a constant mass of material forming a two degree of freedom vibration system, and the elastic support layer 10 supports the mass of the M ary eye device 300 and the mass of the metal support layer 20, And acts as an elastomer which is secondarily reduced. This double elastic mounting structure can effectively reduce the vibration of the M-ary equipment.

In addition, by using the metallic support layer 20 as a paramagnetic metal material, the influence of the magnetic support layer 20 on the magnetic force distribution by the MR 300 can be minimized and the distortion of the acquired image can be reduced have.

The vibration damping sheet 40, the insulating sheet 50, and the shield sheet 60 may be laminated between the metal supporting layer 20 and the elastic supporting portion 30 in a further configuration.

The vibration damping sheet (40) is a synthetic rubber sheet that rises on the metal support layer (20) and absorbs and reduces the vibration transmitted from the upper part together with the metal support layer (20). The vibration damping sheet (40) can be made of a material having a larger attenuation ratio than the elastic block (11). For example, if the attenuation ratio of the elastic block 11 is 0.15, the attenuation ratio of the vibration damping sheet 40 can be 0.25.

The vibration deadening sheet 40 is laminated on the metal support layer 20 to prevent the vibration of the metal support layer 20 from being amplified by its natural frequency. That is, the right vibration damping sheet 40 on the metal supporting layer 20 is interposed in the metal supporting layer to serve as a new structure, and has a newly moved natural frequency different from the natural frequency of the metal supporting layer. This makes it possible to prevent the phenomenon that the vibration transmitted from the M arion device is amplified in the bottom structure by discording the natural frequency of the bottom structure from the predictable external frequency band overlapping with the natural frequency of the metal supporting layer.

The insulating sheet 50 is made of an insulating synthetic resin, which cuts off the current transmitted from the bottom of the building. The insulation sheet 50 shields the current flowing from the outside, thereby preventing the distortion of the image.

The shield sheet 60 shields the electromagnetic wave generated from the MOREE EQUIPMENT so that it does not go out of the indoor space by attaching a thin copper plate to one side of the plywood or the synthetic resin plate. In particular, electromagnetic waves generated from M ary equipment form a magnetic field, which shields the image by helping the magnetic field to be formed correctly.

1, a finishing material 70 (a plywood or the like) for forming an indoor floor is laminated on the shield sheet 60.

In still another additional construction, a plurality of stopper blocks 12 having a height lower than that of the elastic blocks 11 are distributed and arranged between the elastic blocks 11. [

A gap is formed between the upper surface of the stopper block 12 and the bottom surface of the metal supporting layer 20 so that the stopper block 12 and the metal supporting layer 20 are not in contact with each other. The stopper block 12 prevents the metal support layer 20 from being excessively warped by supporting the metal support layer 20 when the metal support layer 20 is sagged downward due to the elongation of the bottom structure or the local load concentration.

Figure 5, on the other hand, relates to a floor structure according to another embodiment of the present invention. The bottom structure according to another embodiment of the present invention includes an elastic supporting layer having elastic blocks 11 and a metal supporting layer 20, and further includes a vibration damping sheet, an insulating sheet, a shield sheet, and an elastic supporting member can do. These constituent elements may include the technical features of the bottom structure according to the above-described embodiment as they are without departing from the scope of the following description.

In the embodiment shown in FIG. 5, the bottom surface 201 of the base layer 200 is formed slightly higher rightward. A metal supporting plate 111 is placed on each upper surface of the two elastic blocks 11 that are separated from each other. The metal support plate 111 and the upper end of the elastic block 11 may be bonded or physically fixed.

On the other hand, in correspondence with the position above the metal support plate 111, a screw hole 212 is formed in the unit metal plate 21 through the upper and lower portions. A height adjusting screw 23 is coupled to the screw hole 212. The protruding length toward the metal support plate 111 is adjusted in accordance with the rotation direction of the height adjusting screw 23. The height adjustment screw 23 protruding downward is brought into contact with the metal support plate 111 so that the horizontal alignment of the metal support layer 20 can be adjusted.

At the bottom of the unit metal plate 21, depression grooves 213 are formed corresponding to the positions of the elastic blocks 11. When the elastic block 11 is disposed so as not to correspond to the position of the recessed groove 213 by accommodating a part of the elastic block 11, the recessed groove 213 is lifted so that the elastic block 11 11) is in the wrong position.

In the installation of the floor structure according to the embodiments, the elastic support layer may be installed from the middle portion of the room space where the MOREE EQUIPMENT 300 is installed to the elastic support portion, and then the elastic support layer to the finishing material may be provided at the other portion . By aligning the middle part of the indoor space in which the MOREE EQUIPMENT 300 is installed horizontally and then completing the floor structure while aligning the peripheral parts thereof on the basis of this, .

On the other hand, more elastic support layers can be provided on the positions where the M ary eye is installed and on the path for moving the M ary eye to the installation position. Thus, the embroidery can be safely moved to the installation position.

After the floor structure was installed according to the embodiment shown in FIG. 1, the effect thereof was verified. Noise was measured in the lower part of the test room where the M-ary equipment was installed, and noise was measured at the same place after the floor structure was installed according to the embodiment of the present invention.

Specifically, the bottom structure is composed of an elastic block having a thickness of 12 mm, a metal supporting layer (aluminum) having a thickness of 15 mm, a vibration insulating sheet having a thickness of 2 mm, an insulating sheet having a thickness of 1 mm, a shield sheet having a thickness of 26 mm , And the thickness of the elastic support portion was 30 mm.

On the other hand, MRI equipment was Philips' 3T model and weighed 6.7 tons. The noise was measured using a Class I noise meter.

The noise generated by M-ary is a kind of vibration noise, which is a high-frequency vibration and noise frequency component of 500 Hz or more. According to the bottom structure according to the embodiment of the present invention, the noise generated by effectively damping vibration can be greatly reduced.

It was confirmed that the noise of the lower layer, which was 58 dB before the floor structure according to the embodiment of the present invention, was lowered to 30 dB or less after the floor structure was constructed.

This is a level of everyday life level, which is very low to the extent that the actually measured noise is coming from M.Ar ia. As described above, the floor structure for vibration reduction according to the embodiment of the present invention can significantly reduce the noise generated and transmitted from the M.A.

While the present invention has been described in connection with what is presently considered to be practical and exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: elastic support layer
11: elastic block 111: metal support plate 12: stopper block
20: metal supporting layer
21: unit metal plate 211: mounting seat 212: screw hole 213: recessed groove
22: joint plate 23: height adjusting screw 24: reinforcing plate
30: Elastic support 40: Damping sheet 50: Insulation sheet 60: Shield sheet
70: Finishing material
200: base layer 201: bottom surface
300: M ary eye equipment 301: support leg

Claims (6)

In a floor structure of an indoor space in which an equipment is installed,
An elastic supporting layer having a plurality of elastic blocks dispersed on the base layer and acting as an elastic body,
A metal supporting layer which is placed on the plurality of elastic blocks and integrally joined with each other at the edges of the unit metal plate,
And a resilient supporter placed on the metal support layer and supporting the M ary eye device acting as a mass and acting as an elastic body,
Wherein the metal support layer is made of copper or aluminum and a paramagnetic metal,
A vibration damping sheet, an insulating sheet and a shield sheet are laminated between the metal supporting layer and the elastic supporting part,
The vibration damping sheet is stacked on the metal support layer to prevent vibration of the metal support layer due to its natural frequency,
The insulating sheet interrupts the electric current transmitted from the bottom of the building,
The shield sheet shields the electromagnetic wave generated from the M &
A more elastic support layer is provided in the path for moving the device to the installation position than the other portion
Floor structure for noise and vibration reduction for Emory equipment. delete delete The method of claim 1,
And a plurality of stopper blocks having a height lower than that of the elastic block are dispersedly disposed between the elastic blocks
Floor structure for noise and vibration reduction for Emory equipment. The method of claim 1,
A mounting seat recessed in the lower surface of the edge of the unit metal plate is formed,
And the unit plates are coupled to the grooves formed by the mounting holes of the neighboring unit plates, and the unit plates and the coupling plates are fastened with bolts to connect the unit plates.
Floor structure for noise and vibration reduction for Emory equipment. The method of claim 1,
A metal support plate is placed on the elastic block,
The unitary metal plate is provided with a screw hole corresponding to a position above the metal support plate,
And the height of the unit metal plate is adjusted through a height adjusting screw which is fastened to the screw hole and protrudes toward the metal support plate.
Floor structure for noise and vibration reduction for Emory equipment.

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