JP2560157Y2 - Air pressure adjustment device for air film structure - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] This invention is applicable to air film type air arches used for entrance and exit gates of parades and expositions, and air film type air tubes and air beams used as structural materials for temporary structures. The present invention relates to an air pressure adjusting device for an air film structure, which adjusts the air pressure of the air.

[0002]

2. Description of the Related Art An air film structure has a constant shape or wind by maintaining the air pressure in the film within a predetermined air pressure range.
A desired strength against external force such as pressure can be obtained.

[0003] On the other hand, it is extremely difficult to completely seal the above-mentioned film body, and even if a little, air always leaks from the above-mentioned film body. Therefore, it is necessary to replenish the compressed air every time the amount of air leaks.

Therefore, conventionally, a blower for replenishing compressed air in the film body is provided, and power is supplied to an electric motor of the blower via an inverter. On the other hand, an air pressure detecting device for detecting air pressure in the film body is provided. In some cases, a sensor is provided, and the number of revolutions of the electric motor is controlled via the inverter by the detection signal of the air pressure detection sensor. According to this, the replenishing amount of the compressed air to the film body is automatically controlled, and the air pressure in the film body is adjusted within a predetermined air pressure range.

[0005]

The present invention is to provide a way, to the membrane body
External force is not constant due to the magnitude of wind pressure at that time
Therefore, adjust the air pressure inside the membrane against this external force to
It is desirable to be able to adjust the strength of the body. There
In order to adjust the detection signal of the above sensor,
Change the sensor to one of other specifications.
It is conceivable that this is the air pressure regulation of the air film structure.
Configuration integer devices produce complex such Ruosore.

[0006]

SUMMARY OF devised] This invention has been made by focusing on the above situation, the film body by adjusting the air pressure of the film body
To adjust the strength of the device with a simple configuration
It is an object of the present invention to provide an air pressure adjusting device for an air film structure.

[0007]

In order to achieve the above object, the air pressure adjusting device for an air film structure of the present invention is provided with a blower 19 communicating with the inside of the film body 2 of the air film structure 1. by driving the compressed air 3 to the film body 2 to enable replenishment, the plate member 10 of Ru receiving the air pressure within the film structure 2
And a through hole 29 is formed in the plate
A diaphragm 30 is provided to cover the through hole 29 of
The outer edge of the diaphragm 30 to the opening edge of the through hole 29
And elastically deformed by the air pressure in the film body 2
The deformation detection sensor 31 for detecting the amount of deformation of the diaphragm 30 provided that, when the deformation amount of the same diaphragm 30 is determined to below a predetermined minimum amount by the detection signal of the deformation detecting sensor 31, to drive the blower 19 Meanwhile, when the deformation amount is determined to have reached a predetermined maximum amount, if you to stop the drive of the same blower 19
At

The deformation detecting sensor 31 is connected to the
The position can be freely adjusted along the ram 30, and the
It is detachably supported on the plate 10 at the adjustment position .

[0009]

[Operation] The operation of the above configuration is as follows.

When air is leaked from the inside of the film body 2 and the air pressure in the film body 2 decreases, and the deformation detecting sensor 31 determines that the deformation amount of the diaphragm 30 is less than a predetermined minimum amount (A). blower 19 is driven, the by blower 19 compressed air 3 to the film body 2 is replenished, thereby, the film body 2 is kept above a predetermined minimum pressure.

On the other hand, when it is determined that the amount of deformation of the diaphragm 30 has reached a predetermined maximum amount (B) due to, for example, replenishment of the compressed air 3, the driving of the blower 19 is stopped, and the blower 19 is stopped. Replenishment of the compressed air 3 into the film body 2 by 19 is stopped , whereby the inside of the film body 2 is suppressed to a predetermined maximum air pressure or less.

Therefore, since the inside of the film body 2 is adjusted to a predetermined air pressure range, the air film structure 1 has a certain shape and a desired strength.

In the above configuration, the deformation detection sensor
31 can be adjusted in position along the diaphragm 30
At the adjustment position, it is attached to and detached from the plate 10.
Freely supported, that is, the diaphragm 30
The deformation detecting sensor so as to cut the amount of deformation of the desired site in the detection
The position of the circulator 31 is freely adjustable, and the following operation occurs.
You.

That is, the diaphragm 30 is located within the membrane 2.
When elastically deformed under air pressure,
The amount of elastic deformation of the diaphragm 30 is large at the center.
And becomes smaller toward its outer edge.

For this reason, the deformation detecting sensor 31 makes a judgment.
(A) and maximum amount of deformation of the diaphragm 30
Assuming that (B) is a constant value, this deformation detection
Deformation of the central part of the diaphragm 30 by the output sensor 31
When the amount is detected, the blower 19 is driven and stopped accordingly.
As a result, the range of the minimum and maximum air pressure in the film body 2 is reduced.
That is, the strength of the film body 2 is maintained within a certain narrow desired range.
You. On the other hand, the diaphragm detection sensor 31
The amount of deformation on the outer edge side of the center of the program 30 is detected.
And the accompanying driving and stopping of the blower 19,
The range of minimum and maximum air pressure within 2 is expanded, ie, the membrane
The strength of the body 2 is kept within a wide desired range.

Therefore, as described above, the diaphragm 3
The above-mentioned deformation detection is performed so that the deformation amount of the desired part can be detected.
The position of the sensor 31 can be adjusted freely.
The diaphragm 30 determined by the deformation detection sensor 31
Do not change the values of the minimum (A) and maximum (B)
In other words, the deformation detection sensor 31 is
Easy to adjust the position without changing
As described above, the minimum and maximum air in the membrane 2 is
The range of pressure is scaled.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2, reference numeral 1 denotes an air film structure. The air film structure 1 is a film 2 which is an air film type air arch used for an entrance / exit gate of a parade. An air pressure adjusting device 4 for replenishing compressed air 3 is provided therein, and the film body 2 is made of a flexible resin sheet.

The air pressure adjusting device 4 has a casing 6 made of sheet metal or resin. The casing 6 has a cylindrical body 7 having a vertical axis and a bottom plate 8 which can open and close the lower end opening of the cylindrical body 7. , an outward flange 9 formed on the upper end of the cylindrical body 7, the top plate der closing the upper end opening of the same cylinder 7
And the plate material 10.

An axial air supply pipe 12 is attached to the plate 10, and an upper end opening 1 of the air supply pipe 12 is provided.
3 is provided. This valve element 14
Is composed of a sheet metal valve body 15 and an elastic body 16 attached to the lower surface of the valve body 15. The valve body 15 is pivotally supported on a plate 10 by a pivot shaft 17 having a horizontal horizontal axis so that the valve body 14 pivots downward by its own weight. The opening 13 is closed by pressing the upper end of the opening 12.

A blower 19 is provided in the casing 6, and the blower 19 is detachably attached to the inner peripheral surface of the cylindrical body 7. The blower 19 includes a casing 20, a rotor 21, and an electric motor 22 for driving the rotor 21 to rotate. The above casing 2
The discharge port formed at 0 is connected to the lower end of the air supply pipe 12 via an elastic short pipe 23.

An air introduction cylinder 25 is projected from the film body 2, and the end of the air introduction cylinder 25 is detachably attached to the outward flange 9. The blower 19 communicates with the inside of the film body 2 via the air introduction cylinder 25, the air supply pipe 12, and the short pipe 23.

When the electric motor 22 is driven, the blower 1
9, the valve 14 is rotated upward against the air pressure in the membrane 2 and the weight of the valve 14, and the compressed air 3 is released from the short pipe 23. Then, the compressed air 3 is replenished into the film body 2 by sequentially passing through the air supply pipe 12 (shown by a two-dot chain line in FIG. 1).

On the other hand, when the driving of the electric motor 22 is stopped, the pressure of the compressed air 3 against the valve body 14 is lost, while the valve body 14 rotates downward due to the air pressure in the film body 2 and the weight of the valve body 14. Then, the valve element 14 closes the opening 13.

In FIG. 2 and FIG.
An air discharge pipe 26 is provided for communicating the inside of the filter 5 with the outside of the film body 2. The air discharge pipe 26 is supported across the cylindrical body 7 and the plate 10, and a manual open / close valve 27 is attached to a downstream end of the air discharge pipe 26.

Normally, the opening / closing valve 27 is closed. However, when the air pressure in the film body 2 becomes excessive,
For example, when the pressure is reduced, the open / close valve 27 may be opened to discharge the air in the film body 2.

In all figures, the plate 10 has a circular hole .
A certain through hole 29 is formed, and a circular diaphragm 30 is provided so as to close the through hole 29. The outer edge of the diaphragm 30 is detachably attached by a flange 28 to the opening edge of the through hole 29, the diaphragm 30 is formed into a substantially flat shape in a free state. The central portion of the diaphragm 30 is elastically deformed downward by receiving the air pressure in the film body 2.

A deformation detecting sensor 31 for detecting the amount of deformation of the diaphragm 30 is provided. This deformation detection sensor 31 is a limit switch,
And a detection arm 33 pivotally supported by the contact portion 32 so as to be vertically rotatable. Usually, the detection arm 33 is urged upward by a spring.

The deformation detecting sensor 31 can be adjusted in position with respect to the diaphragm 30 by a sensor support 34, and is detachably supported on the plate 10 at the adjusted position . The above deformation detection sensor 3
Numeral 1 is supported by the upper sensor support 34 so that the rotating end of the detection arm 33 is pressed against the lower surface of the diaphragm 30 substantially at the center. The detection arm 33 rotates up and down in accordance with the deformation of the diaphragm 30, turns on at a predetermined upper rotation position, and turns off at a predetermined lower rotation position.

Further, a control device 36 for connecting the electric motor 22 of the blower 19 and the deformation detection sensor 31 is provided. 37 is a power supply.

As shown by the solid line in FIG. 4, when the air pressure in the film body 2 decreases and the amount of elastic deformation at the center of the diaphragm 30 becomes less than a predetermined minimum amount (A), the deformation detecting sensor The detection arm 33 of the 31 just reaches the predetermined upward rotation position. And
At this time, the deformation detecting sensor 31 is turned on, the electric motor 22 is driven via the control device 36, and the compressed air 3 is replenished from the blower 19 into the film body 2.

Thus, the air pressure in the film body 2 is increased, and the inside of the film body 2 is maintained at a predetermined minimum air pressure or more. Further, the amount of elastic deformation at the central portion of the diaphragm 30 becomes a predetermined maximum due to the increase of the air pressure in the film body 2.
When the amount (B) is reached, the deformation detection sensor 31
The detection arm 33 just reaches the predetermined downward rotation position. Then, at this time, the deformation detection sensor 31 is turned off, and the drive of the electric motor 22 is stopped via the control device 36. Then, the replenishment of the compressed air 3 into the film body 2 is stopped, and the film body 2 is stopped.
The inside is suppressed below a predetermined maximum air pressure.

In the above case, the predetermined maximum elastic deformation amountamount
Minimum from (B)amount(A) minus difference (C) and deformation
Detection arm for turning on and off the detection sensor 31
33 is equal to the amount of rotation.

Referring to FIGS. 4 to 6, the sensor support 34 will be described in more detail.

The sensor support 34 has a base member 41 which is detachably fixed to the plate member 10 by bolts 40. The base member 41 has a pair of vertically elongated linear holes 4
2, 42 are formed.

An upper / lower adjustment plate 44 is detachably attached to the base member 41 by bolts 43 passing through the respective straight elongated holes 42. That is, if the bolt 43 is loosened, the vertical adjustment plate 44 can be adjusted vertically (arrow D in FIG. 4). The upper and lower adjustment plate 44 is formed with a pair of arc-shaped long holes 45 extending substantially parallel to the deformed shape of the diaphragm 30 in a side view. A parallel moving plate 48 is detachably attached to the vertical adjusting plate 44 by bolts 47 passing through the respective arc-shaped long holes 45. That is, when the bolt 47 is loosened, the translation plate 48 can be translated along the arc-shaped long hole 45 (arrow E in FIG. 4).

A pivot plate 50 is pivotally supported by the pivot 49 on the translation plate 48. A screw jack 52 is attached to the translation plate 48, and the screw jack 52 and the pivot plate 50 are connected by a link 53. That is, if the screw jack 52 is turned, the angle of the pivot plate 50 can be adjusted around the pivot 49 (arrow F in FIG. 4).

A support base 54 is protruded from the pivot plate 50,
The deformation detection sensor 31 is detachably screwed to the protruding end of the support base 54 with a bolt 55.

Then, the deformation detecting sensor 31 is adjusted vertically by the vertical adjusting plate 44, the position of the deformation detecting sensor 31 is adjusted along the lower surface of the diaphragm 30 by the parallel moving plate 48, and the screw jack 52 is operated. By rotating the pivot plate 50, the deformation detection sensor 3
1 is adjusted to an angle , and at the adjusted position, each of the bolts 43 ,
The operation to 47 causes the deformation detection sensor 31 to
Lever is supported on plate 10, a desired portion of the diaphragm 30
Desired angle rotation end of the detecting arm 33 against the lower surface of the upper and lower
The contact can be made under various conditions such as the position .

In the above case, as shown in FIG. 4, the value of the difference (C) of the diaphragm 30 depends on a certain air pressure in the membrane 2.
In the central part of the diaphragm 30, the outer edge is large.
It becomes smaller gradually toward the part . On the other hand, the maximum amount of deformation of the diaphragm 30 determined by the deformation detection sensor 31 is determined.
The small amount (A) and the maximum amount (B) are constant, respectively.
In other words, the amount of rotation of the detection arm 33 for turning on and off the deformation detection sensor 31 is unchanged.

[0041] Therefore, by the parallel moving plate 48, for example, it is assumed that the deformation detection sensor 31 along the lower surface of the diaphragm 30 is located adjusted to a radially outer edge portion of the diaphragm 30. Then, in this case, unless the difference (C) in the amount of deformation of the diaphragm 30 becomes considerably large, the deformation detection sensor 31 does not turn on or off.
Therefore, the range from the minimum air pressure to the maximum air pressure in the film body 2 can be increased. That is, the deformation detection sensor 31 is connected to the center of the diaphragm 30 and the outer edge thereof.
By adjusting the position between the upper and lower parts , the range of the minimum and maximum air pressure in the film body 2 can be adjusted.

Although the above description is based on the illustrated example, the air film structure 1 is not limited to the entrance and exit gates shown in this embodiment, but may be a dome of a baseball stadium. Further, the deformation detection sensor 31 may be a photo sensor or a proximity switch. Further, the opening / closing valve 27 may be automatically opened when the inside of the film body 2 becomes higher than a predetermined pressure.

[0043]

According to the preconditions of the present invention , a blower communicating with the inside of the film of the air film structure is provided, and by driving the blower, the compressed air can be replenished into the film, and the air pressure in the film can be increased. the plate material Ru undergoing provided, through holes in the plate
And a diaphragm so as to close this through hole
The outer edge of the diaphragm is connected to the opening of the through hole.
Attached to the rim and elastically deformed by the air pressure inside the membrane
When the deformation amount of the diaphragm is determined to be equal to or less than a predetermined minimum amount based on a detection signal of the deformation detection sensor, the blower is driven while the deformation amount sensor detects the deformation amount of the diaphragm. When it is determined that has reached a predetermined maximum amount, the drive of the blower is stopped .

For this reason, when air leaks from the inside of the film and the air pressure in the film decreases, and the deformation detecting sensor determines that the amount of deformation of the diaphragm is less than a predetermined minimum amount, the blower is driven. The compressed air is replenished into the membrane by the blower ,
The inside of the membrane is maintained at a predetermined minimum air pressure or higher.

On the other hand, when it is determined that the amount of deformation of the diaphragm has reached a predetermined maximum amount, for example, due to the replenishment of the compressed air, the drive of the blower is stopped, and the blower is driven into the membrane. The replenishment of the compressed air is stopped , whereby the inside of the membrane is kept below a predetermined maximum air pressure.

Therefore, since the inside of the membrane is adjusted to a predetermined air pressure range, the air membrane structure has a certain shape and a desired strength.

Then, based on the above preconditions,
The main configuration of the above is that the deformation detection sensor is
Adjustable position along the ram and adjust
It is detachably supported on the plate at the position.
Thus, the amount of deformation of a desired portion of the diaphragm can be detected.
As described above, the position of the deformation detection sensor is freely adjustable,
The following effects occur.

That is, the above-mentioned diaphragm is the air pressure inside the membrane.
When subjected to elastic deformation under the influence of
The amount of elastic deformation of the earhram is large at the center,
It becomes smaller toward the edge .

For this reason, the data determined by the deformation detection sensor is
The minimum and maximum amount of deformation of the earhram are constant.
If it is a value, this deformation detection sensor
When the amount of deformation at the center of the flam is detected,
By driving and stopping the blower, the minimum and maximum air pressure in the membrane
The range is reduced, meaning that the strength of the membrane
Kept in the enclosure. On the other hand, the die
Detects the amount of deformation on the outer edge rather than the center of the afram
And the accompanying driving and stopping of the blower,
The range of minimum and maximum air pressure has been expanded, that is, the strength of the membrane
It is kept in a certain wide desired range.

Therefore, as described above, the diaphragm
In order to detect the amount of deformation of the desired part,
The position of the sensor can be adjusted freely.
The minimum amount of diaphragm deformation determined by the output sensor
Without changing the maximum value, that is, the deformation detection sensor
Simply adjust the position without changing the
With a simple configuration, as described above,
The range of the minimum and maximum air pressure is adjusted.

Therefore, according to this invention , the air inside the membrane
Adjusting the pressure to adjust the strength of this membrane,
Simple position adjustment of the above deformation detection sensor
With a simple configuration, it can be done.

[Brief description of the drawings]

FIG. 1 is an overall side sectional view.

FIG. 2 is an overall plan view.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a partially enlarged view of FIG. 1;

FIG. 5 is a partially enlarged view of FIG. 2;

FIG. 6 is an exploded perspective view of the sensor support.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Air film structure 2 Film body 3 Compressed air 4 Air pressure adjusting device 10 Plate member 19 Blower 26 Air exhaust pipe 27 Opening / closing valve 29 Through hole 30 Diaphragm 31 Deformation detection sensor 34 Sensor support 36 Control device

Claims (1)

(57) [Scope of request for utility model registration] 1. A provided blower communicating with the film body of the air film structure, the driving of the blower, and refillable compressed air to the membrane body, the plate material Ru receiving the air pressure of the membrane body
To form a through hole in this plate and
A diaphragm is provided so as to close the outside of the diaphragm
Attach the edge to the opening edge of the through hole, and
A deformation detection sensor is provided for detecting the deformation amount of the diaphragm which elastically deforms under the air pressure, and when the deformation amount of the diaphragm is determined to be equal to or less than a predetermined minimum amount based on a detection signal of the deformation detection sensor, the blower is driven. On the other hand, when it is determined that the deformation amount has reached a predetermined maximum amount, the air film is configured to stop driving the blower.
In the air pressure adjusting device for a structure, the deformation detection sensor is moved along the diaphragm.
The position can be freely adjusted, and the adjustment position
An air pressure adjusting device for an air film structure that is detachably supported .