KR101577655B1

KR101577655B1 - Air cushion with solid type air guide

Info

Publication number: KR101577655B1
Application number: KR1020150043876A
Authority: KR
Inventors: 김병인; 박희창; 이성휘; 윤동원
Original assignee: 한국기계연구원
Priority date: 2015-03-30
Filing date: 2015-03-30
Publication date: 2015-12-16

Abstract

The present invention relates to an air cushion having a solid air guide. The air cushion includes a flat plate on a reference surface, an air inflow pipe through which the air is introduced, A support portion having a plurality of air outlets for ejecting air downward; And a solid air guide formed in a ring shape along the periphery of the support portion and coupled to a lower portion of the support portion and made of an elastic material, so that the air introduced into the air inlet pipe flows through the air outlet To an air cushion having a solid air guide capable of easily moving an object of a high load by reducing the friction with the ground by being flushed along the inner circumferential surface of the air guide while being ejected.

Description

Technical Field [0001] The present invention relates to an air cushion having a solid air guide,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cushion having a solid air guide, and more particularly, to an air cushion having a solid air guide, To an air cushion having a solid type air guide.

Air cushion is a device that lifts a heavy object by using high-pressure air. Air is usually sprayed toward the floor to form an air film layer between the lower surface of the device and the ground, thereby reducing friction with the ground. It facilitates transportation of objects. Air cushions are also referred to as air-bearings, air-caster or air-floaters.

In the production line for various industries, various parts, assemblies, unit units, or equipment are required to be moved in the factory. Conventionally, such moving objects are usually transported by means of moving means installed in a factory, such as a robot moving means, a crane or a hoist .

However, increasingly, there is an increasing use of an air cushion that is easy to use and can be easily carried in place of the moving means described above.

A conventional air cushion related technology is disclosed in Korean Registered Utility Model No. 20-0423164 ("Air Carrier for Heavy Load Transport Using Compressed Air"), which is shown in FIG.

The illustrated air caster is made of a rubber material and is formed in the shape of a ring formed with a hollow part. The bottom surface of the air caster is formed with a tube 10 in which micro pores 12 are formed in an unlimited number. And an auxiliary block 30 formed in the shape of a cylindrical block at the center of the support plate 20 and passing through the hollow portion of the tube 10, The tube 10 is expanded and the compressed air is discharged to the micro pores 12 to float from the ground.

However, in the conventional air bearing, the minute pores 12 for discharging air are formed in the ring-shaped tube 10, so that the size of the micro pores 12 is gradually enlarged when used for a long time, Due to the expansion of the micro pores 12, the amount of air discharged to the inflow amount of the air into the tube 10 gradually increases, so that the expansion of the tube 10 is not smooth, resulting in deterioration of performance and service life.

Korean Registered Utility Model No. 20-0423164 ("Air Carrier for Compressed Air Transport >")

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air cushion having a solid air guide having a new structure capable of easily transporting heavy objects by spraying uniform compressed air on the ground will be.

Particularly, it is an object of the present invention to provide an air cushion having a solid type air guide which is excellent in durability and hardly deteriorates in performance even when used for a long time unlike the prior art.

An air cushion having a solid air guide according to an embodiment of the present invention is formed in the shape of a flat plate on a reference surface, the cargo is placed on an upper part thereof, an air inflow pipe for introducing outside air is provided, A plurality of air outlets for spraying the air introduced through the plurality of air outlets; And a solid air guide formed in a ring shape along the periphery of the support portion and coupled to a lower portion of the support portion and made of an elastic material; So that the air introduced into the air inlet pipe can be floated while being ejected to the ground along the inner circumferential surface of the air guide through the air outlet.

In addition, the air guide may have a shape in which the cross section cut vertically with respect to the reference plane is narrowed toward the lower end. At this time, the inner circumferential surface of the air guide on the vertical section may have a truncated conical shape that widens toward the downward direction.

The support portion includes a plate having the air inlet pipe on one side thereof and an intermediate plate spaced below the plate and spaced apart from each other by a predetermined distance, The air introduced through the inlet pipe is filled in the space between the plate and the intermediate plate and can be dispensed through the air outlet and ejected to the ground.

Further, the support portion may be configured to vary the distance between the plate and the intermediate plate by the pressure of the air introduced through the air inlet pipe, and the air outlet may be formed in the circumferential surface of the boundary surface contacting the inner peripheral portion of the upper end of the air guide A plurality of protrusions may be formed at regular intervals along the direction.

In addition, the air guide may be formed with a plurality of grooves at a lower end thereof so that the air ejected through the air outlet is guided along the inner circumferential surface of the air guide and stays between the ground for a predetermined time.

At this time, the grooves are formed in a 'T' shape in a lower region on the inner circumferential surface of the air guide and may be formed at regular intervals along the circumferential direction of the air guide, Quot; A " -shaped shape.

Finally, the support portion may be formed in a square shape, and the air cushion according to an embodiment of the present invention may further include four support portions which are closely fixed to four corners of the lower portion of the support portion. At this time, the height of the receiving portion may be lower than the height of the air guide.

The air cushion according to an embodiment of the present invention contemplates a new type of air cushion that is different from the conventional one. The air introduced through the air inflow pipe is uniformly blown out through the air blow-out port and guided along the inner circumferential surface of the solid air guide There is an advantage that a high levitation force can be obtained while staying in the groove formed in the lower end portion of the air guide for a predetermined time.

In addition, there is no fear that the micro pores discharged from the air will be expanded as in the conventional art, so that it is possible to maintain excellent performance even when used for a long time.

Further, by forming the jet port along the inner circumferential surface of the air guide so that the other end of the air inlet pipe for introducing the outside air is located at the center portion between the plate and the intermediate plate and the distances from the central portion to the plurality of jet ports are the same, There is an effect that can be wounded while balancing without bias.

1 is a sectional view showing a conventional air cushion.
2 is a perspective view of an air cushion according to an embodiment of the present invention;
3 is an exploded perspective view showing an air cushion according to an embodiment of the present invention;
4 is a bottom view of an air cushion according to one embodiment of the present invention.
5 is a partial cross-sectional perspective view of an air cushion according to one embodiment of the present invention.
6 is a sectional view taken along the line AA 'of FIG. 2;
FIG. 7 is an enlarged view of FIG. 6B. FIG.

2 is a perspective view showing an air cushion according to an embodiment of the present invention. FIG. 3 is an exploded perspective view showing an air cushion according to an embodiment of the present invention, and FIG. 4 Sectional view of the air cushion according to the embodiment of the present invention. Fig. 6 is a cross-sectional view taken along the line AA 'of Fig. 2. Fig. 7 is a cross- 6 is an enlarged view of B of FIG.

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

As shown in the figure, the air cushion according to the embodiment of the present invention is largely composed of the support portion 100 and the air guide 200.

The supporting part 100 is formed in a flat plate shape on the reference surface R and is provided with an air inlet pipe 300 through which the air to be conveyed is placed and external air is introduced. And a plurality of air outlets 121 for blowing the inflow air downward are formed.

The air guide 200 is coupled to the lower part of the support part 100 and is formed in a ring shape along the periphery of the support part 100 and is formed in a solid shape filled with the inside of the tube. The air guide 200 is preferably made of an elastic material such as rubber.

The air introduced into the air inlet pipe 300 is blown into the inner circumferential space surrounded by the bottom surface of the support 100 and the inner circumferential surface of the air guide 200 through the air outlet 121. At this time, The air cushion 200 floats along the inner circumferential surface of the air guide 200 and the air cushion floats according to the embodiment of the present invention.

That is, when the compressed air is strongly blown to the ground, the air film layer is formed between the surfaces, and the weight of the cargo placed on the top is supported and finely floated from the ground.

At this time, the supporting part 100 may be composed of the plate 110 and the intermediate plate 120. As shown in the figure, the plate 110 is a flat plate-like substrate on which the cargo is placed, and it is advantageously made of a rigid material, for example, a metal material, which is formed at a predetermined height and can support the cargo. The air inlet pipe 300 is provided at one side of the plate 110. The intermediate plate 120 is connected to the plate 110 at a predetermined distance below the plate 110. The intermediate plate 120 may be made of a metal material similar to the plate 110, Is formed through the inner side partial area.

At this time, it is preferable that a plurality of air outlets 121 formed in the inner region of the intermediate plate 120 are formed along the circumferential direction of the interface with the inner peripheral portion of the upper end of the air guide 200 at regular intervals. Specifically, as shown in FIG. 4, the eight jet ports 121 may be symmetrically formed at regular intervals along the circumferential direction, but the present invention is not limited thereto.

One end of the air inflow pipe 300 is exposed to the outside and the other end is positioned to penetrate the lower surface of the plate 110. Therefore, when the outside air introduced through the air inlet pipe 300 flows, the air is filled in the space between the plate 110 and the middle plate 120, and the air is discharged through the air outlet 121 formed in the middle plate 120 And is ejected to the ground. In this case, as shown in FIG. 5, it is more preferable that the other end of the air inflow pipe 300 is located through the central portion of the plate 110. That is, the distances from the other end of the air inflow pipe 300 to the plurality of air outlets 121 formed in the intermediate plate 120 are the same. Accordingly, the inflow air is uniformly distributed through the air blow-out port 121 and is sprayed to the ground, so that it can be floated in a balanced state without being shifted to one side.

Although not shown in the drawing, the air inlet pipe 300 is connected to an air compressor (not shown) which compresses air to supply high-pressure air.

In order to uniformly distribute the air introduced through the air inlet pipe 300 from the central region of the plate 110 and the middle plate 120 to the air outlet 121, The spacers 120 are spaced apart from each other by a predetermined distance. For this purpose, the support 100 may further include a spacing member 130, as shown in FIG.

It is preferable that the distance between the plate 110 and the intermediate plate 120 is varied by the pressure of the air introduced through the air inlet pipe 300. 3 and 7, the periphery of the plate 110 and the intermediate plate 120 may be connected to each other by an elastic member 140 having a cross section of '⊂' character (easy window symbol). Therefore, if the pressure of the air flowing into the space between the plate 110 and the intermediate plate 120 becomes strong, the distance between the plate 110 and the intermediate plate 120 becomes wider. The inner air layer can support the air guide 200 and the receiving unit 400 to support the cargo when the heavyweight cargo is placed on the upper portion of the plate 110. When the supply of air is stopped, And may serve as a buffer between the cargo and the air guide 200.

6, the air guide 200 may have a shape in which the cross section cut vertically with reference to the reference plane R is narrowed toward the lower end, and in particular, the air guide 200 on the vertical section may have a width, It is preferable that the inner circumferential surface of the outer circumferential surface has a truncated conical shape extending toward the lower side.

This shape allows smooth movement in the direction of the paper surface along the inner circumferential surface of the air guide 200 when the compressed air is ejected through the ejection port 121. [

In addition, it is more preferable that a plurality of grooves 210 are formed at the lower end of the air guide 200. 2 and 4, the grooves 210 are formed in a 'T' shape in a lower region on the inner circumferential surface of the air guide 200, and are formed at regular intervals along the circumferential direction of the air guide 200 . In addition, as shown in FIG. 6, a cross section cut vertically with respect to the reference plane R may be formed in the shape of a depressed shape in the central part of the groove 210.

That is, since the groove 210 is formed in a T shape and the central portion is formed in a recessed shape in a greater depth than other regions, air blown through the air outlet 121 is formed on the inner peripheral surface of the air guide 200 And may stay in the groove 210 formed at the lower end of the air guide 200 for a predetermined time before moving to the ground. As a result, a higher levitation force is formed, thereby improving the transportation ability.

In the air cushion according to the embodiment of the present invention, the support portion 100, that is, the plate 110 and the intermediate plate 120 may be formed in a rectangular shape, and the air cushion may be fixedly fixed to four corners of the lower portion of the support portion 100 (Not shown). The support part 400 supports the air guide 200 to support the heavy object when the heavy object is placed on the support part 100. At this time, it is preferable that the height of the receiving part 400 is formed to be somewhat lower than the height of the air guide 200. This is because the air guide 200 is formed of an elastic material so that the air guide 200 is slightly compressed by the weight of the heavy article so that the air guide 200 can be closely contacted with the ground. Therefore, it can be floated easily when high-pressure air is introduced.

An operation of conveying a load of a heavy load using the air cushion according to the embodiment of the present invention having the above-described structure will be described step by step.

An appropriate number of air cushions may be provided on the lower side of the object to be transported, preferably on each corner of the object, according to the size of the object to be transported.

When the installation is completed, the load is placed on the support portion 100 of each air cushion, and high-pressure air is injected into the air inflow pipe 300 of each air cushion connected to the air compressor. The injected air is filled in the space between the plate 110 and the intermediate plate 120 and uniformly distributed and discharged into the inner peripheral space of the air guide 200 through the air outlet 121 formed in the intermediate plate 120. 6 (B), the air moves along the inner circumferential surface of the air guide 200 to the ground, and is stuck in the 'T' shaped groove 210 formed at the lower end of the air guide 200 for a predetermined period of time An air film layer is formed between the sheets. As the air film layer is formed, it floats slightly from the ground.

The entire air cushion on which the cargo is placed on the upper part by the above process is floated with a high levitation force and the friction with the ground is reduced so that the cargo can be transported even with a relatively small force.

The conventional air cushion has the problem that the performance is deteriorated due to the expansion of the micro pores when the air cushion is used for a long period of time because micro pores for discharging air are formed in the tube. The air cushion according to an embodiment of the present invention is a new air cushion designed to solve the above-described problem. The air cushion includes a solid air guide 200, and an air outlet 121 is formed in the intermediate plate 120 The air introduced through the air inlet pipe 300 is uniformly blown out through the air outlet 121 and guided along the inner circumferential surface of the air guide 200 to move to the ground. At this time, there is an effect that the lifting force is maximized by staying in the groove 210 formed at the lower end of the air guide 200 for a predetermined time.

The other end of the air inflow pipe 300 for introducing the outside air is located at the central portion between the plate 110 and the middle plate 120 and the distance from the central portion to the plurality of air outlets 121 is the same. 121 are formed along the inner circumferential surface of the air guide 200, there is an effect that they float in a balanced manner without being shifted to either side.

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.

100: Support
110: plate 120: intermediate plate
130: spacing member 140: elastic member
200: air guide 210: groove
300: air inlet pipe
400:

Claims

In an air cushion for transporting cargo,
(300) formed in the shape of a flat plate on a reference plane and on which the cargo is placed and for introducing outside air, and a plurality of air inflow pipes A support portion 100 having an air outlet 121 formed therein; And
A solid air guide 200 formed in a ring shape along the periphery of the support part 100 and coupled to the lower part of the support part 100 and made of an elastic material;
, &Lt; / RTI >
The air introduced into the air inlet pipe 300 is flushed along the inner circumferential surface of the air guide 200 through the air outlet 121 to the ground,
The air guide 200 is guided along the inner circumferential surface of the air guide 200 so that the air ejected through the air outlet 200 is formed with a plurality of grooves 210 at the lower end thereof for a predetermined time interval between the air guides 200,
Wherein the groove (210) has a shape in which a cross section cut vertically with respect to the reference plane is recessed in a " A " shape.

The air conditioner according to claim 1, wherein the air guide (200)
Wherein a cross section cut vertically with respect to the reference plane is formed to have a narrower width toward a lower end thereof.

3. The method of claim 2,
Wherein the inner circumferential surface of the air guide (200) on the vertical section has a truncated conical shape extending downward.

2. The apparatus of claim 1, wherein the support (100)
A plate 110 having the air inlet pipe 300 at one side thereof and an intermediate plate 120 connected at a predetermined distance below the plate 110 and having a plurality of air outlets 121 formed in an inner part thereof ), &Lt; / RTI >
The air introduced through the air inlet pipe 300 is filled in the space between the plate 110 and the intermediate plate 120 and is discharged through the air outlet 121 and discharged to the ground. Air cushion with body air guide.

5. The apparatus of claim 4, wherein the support (100)
Wherein an interval between the plate (110) and the intermediate plate (120) is varied by a pressure of air introduced through the air inlet pipe (300).

The air conditioner according to claim 1, wherein the air outlet (121)
Wherein a plurality of air cushions are formed at regular intervals along a circumferential direction of a boundary surface contacting the inner peripheral portion of the upper end of the air guide (200).

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2. The apparatus of claim 1, wherein the groove (210)
Wherein the air cushion is formed in a 'T' shape in a lower region on the inner circumferential surface of the air guide (200), and is formed at regular intervals along the circumferential direction of the air guide (200).

delete

The method according to claim 1,
The supporting portion 100 is formed in a rectangular shape,
Four support portions 400 closely fixed to four corners of the lower portion of the support portion 100;
And an air cushion having a solid air guide.

11. The apparatus according to claim 10, wherein the receiving portion (400)
And the height of the air guide (200) is lower than the height of the air guide (200).