JP2009204113A - Gas pressure structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas pressure structure capable of folding in a thin state before injecting gas and keeping its shape at a constant state when injecting the gas and suitably seating and using a plurality of gas pressure structures by assembling in series or in parallel. <P>SOLUTION: The gas pressure structure includes a cylindrical body made of a flexible material, flat top plates respectively fixed on upper and lower faces of a cylinder, a restriction member arranged in the vicinity of the cylinder and restraining extension of the cylinder in the radial direction. A gas supply control device includes a control switch having a plurality of branched pipes and controlling supply and discharge of the gas, and an ejector for discharging the gas in a short time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gas pressure structure, and more particularly to a gas pressure jack that can be inflated by a pressurized gas and can lift a heavy object.

  In the Great Hanshin-Awaji Earthquake, the initial rescue by residents made great results, but mechanical in-vehicle jacks, which are common hand tools used in daily life, were frequently used. This is because the in-vehicle jack can be obtained immediately even in an emergency, and the operation has been mastered. In this case, it was also experienced that it was difficult to jack up with a mechanical in-vehicle jack for an object at a low position peculiar to a disaster.

  On the other hand, as a rescue jack at the time of a disaster, a cushion-type pneumatic jack composed of a thick rubber sheet is known (Non-Patent Document 1). However, this cushion-type pneumatic jack is heavy, and when high-pressure air is injected, it becomes spherical and does not sit well, making it difficult to use multiple combinations. It was difficult to increase or increase the height of lifting.

That is, the lifting load F (N) of the cushion-type pneumatic jack is, as shown in FIG. 3, assuming that the contact area with the load object is A (m2) and the internal pressure of the pneumatic jack is p (Pa). ,
F = A ・ p
However, if the internal pressure p is increased in order to increase the lifting load, the pneumatic jack becomes spherical and the contact area A is reduced. For this reason, even if the internal pressure p is increased, the lifting load does not increase sufficiently. In order to increase the lifting load, the internal pressure p must be increased, and the pressure strength of the pneumatic jack must be increased. , The wall becomes thicker and heavier. Furthermore, as shown in FIG. 4, at a high pressure, the pneumatic jack has a spherical shape and is not satisfactorily seated, making it difficult to use a plurality of jacks in combination. It was difficult to increase or increase the height of lifting.

  In-vehicle air jacks are also commercially available (Non-Patent Document 2), but conventional in-vehicle air jacks, when inflated, have a spherical shape similar to the aforementioned cushion-type pneumatic jack (FIG. 5). ), The contact area with the load object is reduced, and the lift load is not sufficiently increased. Also, at high pressures, the air jack has a spherical shape that makes it difficult to sit down, making it difficult to use multiple jacks in combination, increasing the lifting load by combining multiple jacks, and increasing the lifting height. It was difficult to increase.

"Firefighting equipment / disaster prevention equipment / firefighting clothing general catalog" Akao Corporation, 2007 edition, p.140-144 “4WD Super Air Jack” Eikosha, [Search February 20, 2008], Internet (URL: http://www.shur-lift.jp/pages/air-jack.html)

  The present invention has been developed to solve such problems, and is composed of a flexible material such as a rubber material or a rubber cloth material, and can be folded thinly before injecting gas, When injecting gas, the shape is kept constant, it sits well, it can be used as an in-vehicle jack, and multiple jacks are combined in series or in parallel as a disaster relief jack The purpose of the present invention is to provide a gas pressure jack that can be used for various types (size, height) of debris during disasters.

  In addition, when a plurality of gas pressure jacks are used in parallel (FIGS. 7 and 8), the load object is inclined unless gas is simultaneously injected into each gas pressure jack. Another object of the present invention is to provide a gas supply control device that simultaneously injects gas into a pressure jack and supplies the gas so that the load object does not tilt.

  Furthermore, in order to respond quickly in case of a disaster, it is necessary to take out the gas from the gas pressure jack according to the present invention in a short time and to start lifting heavy objects in different places one after another. Another object of the present invention is to provide an apparatus for discharging gas from a gas pressure jack in a short time.

  That is, the present invention can be used as an on-vehicle gas pressure jack, or a combination of a plurality of gas pressure jacks that can be used for expanding rubble of various sizes and heights during a disaster. Furthermore, an object of the present invention is to provide a device capable of inflating a plurality of gas pressure jacks at the same time and quickly discharging gas from the plurality of gas pressure jacks.

  According to invention of Claim 1, it is a gas-pressure structure which can be inflated with the pressurized gas, and can be folded thinly when the gas is extracted, A main body made of a flexible material that becomes cylindrical when inflated, and a top plate that is a flat plate fixed to the top and bottom of the cylinder, respectively, and when inflated with pressurized gas, the cylinder A constraining member that is placed around the cylinder and constrains the radial expansion of the cylinder so that the shape can be maintained and the top plate can be held flat. A constraining member that constrains the expansion in the vertical direction, and a plurality of gas pressure structures can be used by being stacked in series via a top plate, and the plurality of gas pressure structures can be used in parallel. Gas pressure structure that can be placed and used The body is provided.

  In other words, the gas pressure structure according to the invention of claim 1 has a restraining member around the cylinder, and has a restraining member that connects the upper and lower surfaces of the upper and lower surfaces of the cylinder inside, so that even if gas is injected, the spherical structure The cylindrical shape can be held without becoming flat, and the upper and lower top plates can be held flat. Therefore, a plurality of gas pressure structures can be arranged in series and in parallel to increase the lifting load and increase the lifting height, and can be used for objects of various sizes and heights. . In addition, since the contact area with the load object is large, a sufficient lifting load can be obtained by injecting a gas at a relatively low pressure, so that various gases can be used as a gas supply source. When used as a jack for an automobile, it can be inflated using the exhaust gas of an automobile, and when used for disaster relief, an air cylinder or a nitrogen cylinder, etc., which are always used for automobile exhaust or fire fighting. Can be inflated using. Furthermore, since a sufficient lifting load can be obtained by injecting a gas at a relatively low pressure, the wall thickness can be reduced compared with a conventional pneumatic jack, and a lightweight gas pressure jack is provided. Can do.

  According to invention of Claim 2, it is a gas supply control apparatus which controls supply of the gas from a gas supply source to the gas pressure structure of Claim 1, Comprising: The regulator which controls the pressure of gas, A main plug that is arranged downstream of the regulator and can collectively open and close the flow of gas, a control switch that controls supply and discharge of gas to and from the gas pressure structure, and a plurality of branches that branch downstream of the control switch A branch pipe and a plurality of changeover switches connected to each of the plurality of branch pipes, and by operating the control switch, gas can be simultaneously supplied to the plurality of gas pressure structures, In addition, gas can be discharged from a plurality of gas pressure structures at the same time, and the gas supply control can be individually controlled by operating the changeover switch. Apparatus is provided.

  That is, in the invention of claim 2, since a plurality of the gas pressure structures of claim 1 can be handled at the same time, when a plurality of gas pressure jacks are used in parallel, gas is simultaneously injected into the plurality of gas jacks. Thus, since the lifting heights of the plurality of gas pressure jacks can be made equal, the load object can be lifted without being inclined.

  According to the invention described in claim 3, the gas pressure structure is configured using the pressurized gas of the gas supply source as the driving gas so that the gas can be discharged from the gas pressure structure according to claim 1 in a short time. When the ejector is driven, gas is simultaneously drawn from a plurality of gas pressure structures through a plurality of branch pipes for a short time. The gas supply control device according to claim 2, which can be discharged at the same time.

  That is, in the invention of claim 3, since a plurality of gas pressure structures of claim 1 can be handled simultaneously and gas can be discharged in a short time, gas is discharged from a plurality of gas jacks in a short time. In addition, the work place can be changed one after another, and the work of lifting heavy objects in another place can be started, and a quick response in the event of a disaster can be made.

  According to the invention described in each claim, a plurality of gas pressures can be provided by combining a plurality of gas pressure jacks that can be used for expanding rubble having various sizes and heights at the time of disaster. The jack can be inflated at the same time, gas can be quickly discharged from a plurality of gas pressure jacks, and the common effect of exerting great power in the expansion work of rubble at the time of a disaster is achieved.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the plurality of accompanying drawings, the same or corresponding members are denoted by the same reference numerals.

  FIG. 1 is a view for explaining an embodiment of the present invention, and shows a gas pressure jack 1 in a state inflated with a pressurized gas. FIG. 1 shows a cylindrical main body 2 and a top plate 6 provided above and below the cylindrical main body 2. The main body 2 is made of a flexible material such as a rubber material or a rubber cloth material, and can be inflated with a pressurized gas. When the gas is removed, the main body 2 can be folded thinly (FIG. 2). ). Although the present invention does not limit the type of gas, when the present invention is used as an automobile jack, the exhaust gas of the automobile can be used, and when used in a disaster, the exhaust gas of the automobile is used. Or, an air cylinder or a nitrogen cylinder that is always used in a fire fighting can be used. The top plate 6 is preferably formed of the same material as that of the main body 2 in a flat plate shape, but is not limited to the same material. The gas pressure jack 1 according to the present invention includes a restraining member 5 around the cylinder of the main body 2 in order to maintain the cylindrical shape when the main body 2 is inflated by injecting pressurized gas. Constrain expansion. Further, a member 3 for restraining the upper and lower surfaces of the main body 2 in the vertical direction is provided inside the main body 2, and the expansion of the upper and lower surfaces of the main body 2 is restrained. The restraining members 3 and 5 are preferably made of nylon, but are not limited to nylon. Although FIG. 1 shows an embodiment in which eight restraining members 3 are used, it is not limited to eight.

  Since the gas pressure jack 1 has the above-described structure, the upper and lower top plates 6 are held substantially flat when gas is injected into the main body 2, and the plurality of gas pressure jacks 1 are connected via the top plate 6. Can be connected in series or in parallel. Moreover, since the upper surface of the main body 2 is in contact with the load object over a wide area, a large lifting load can be obtained at a relatively low pressure. Therefore, the thickness of the main body 2 can be made relatively thin, and the weight is significantly reduced as compared with a conventional pneumatic jack.

  In the present embodiment, when the main body 2 is inflated and the gas supply source is removed, the gas supply injection pipe 4 can be connected to the gas supply source by the coupler 8 so that the internal gas does not escape. I have to.

  FIG. 6 shows an embodiment in which two structures are stacked in series. As shown in FIG. 1, holes are provided in the four corners of the top plate, and two structures can be reliably connected to the holes through strings or the like.

  Moreover, FIG. 7 shows an embodiment in which a plurality of gas pressure structures according to the present invention are prepared and arranged and used in parallel. In this case, since the shape of the top plate and the holes at the four corners are formed so as to overlap as shown in FIG. 9, the two structures can be reliably connected to the holes through strings or the like.

  Furthermore, a plurality of gas pressure structures of the present invention can be prepared and used in combination of series and parallel arrangements. FIG. 8 shows an embodiment in which two structures in which two structures are stacked in series are prepared and further arranged in parallel to use a total of four structures. The number to be combined can be freely selected according to the size and weight of the object to be lifted and the height to be lifted.

  In yet another embodiment, the number of pieces stacked in series in the height direction can be changed, and a plurality of jacks having different heights can be prepared, and these can be arranged in parallel to lift a heavy object in an inclined manner.

  In FIG. 10, the circuit diagram of one Embodiment of the gas supply control apparatus of this invention is shown. The gas supplied from the gas supply source 30 is controlled to a target supply pressure by the regulator 12 of the gas supply control device 10 of the present invention, and supplied to the plurality of gas pressure jacks 1. This apparatus includes control switches 14a and 14b. When supplying gas, the control switch 14a is turned on, 14b is turned off, and when discharging gas from the gas pressure jack, the control switch 14a is turned off. Turn on. The piping can be branched into a plurality of branch pipes downstream of the control switches 14a and 14b and connected to the plurality of gas pressure jacks 1 to supply gas. Each branch pipe is provided with a changeover switch 11 and can control the supply of gas to each gas pressure jack. Therefore, in the gas supply control device of FIG. 10, a plurality of gas pressure jacks 1 can be handled at the same time, and when a plurality of gas pressure jacks 1 are used in parallel, a plurality of jacks are injected with gas simultaneously. Since the lifting height of the jack can be made equal, the load object can be lifted without being inclined.

  In FIG. 11, the circuit diagram of other embodiment of the gas supply control apparatus by this invention is shown. In this apparatus, in addition to the gas supply control apparatus of FIG. 10, the control switch 14c and the ejector 20 are provided. When the gas is discharged from the gas pressure jack, the control switch 14c is turned on and the switch 14a is turned off. Thus, the ejector driving gas can be supplied to the ejector 20, and the gas inside the plurality of gas pressure jacks 1 can be sucked and discharged by the ejector 20 in a short time. In this case, it is preferable that the control switch 14b is turned on to assist gas discharge. The present embodiment further includes a relief valve 21 in addition to the gas supply control device of FIG. Therefore, in the present embodiment, the gas supply source pressure is increased to increase the gas supply amount, and the gas can be supplied to the plurality of gas pressure jacks in a short time, and also supplied to the plurality of gas pressure jacks. Since the gas pressure does not exceed the set pressure of the relief valve 21, the gas can be supplied safely.

  The gas pressure structure according to the present invention can be used as a jack for automobiles, and can be used as a jack for rescue in the event of a disaster.

  The gas pressure structure according to the present invention has an initial height lower than that of a conventional mechanical in-vehicle jack, and therefore, when used as a rescue jack in the event of a disaster, the gas pressure structure advantageously performs debris expansion work, etc. be able to. It is lightweight and has excellent portability. In addition, a plurality of jacks can be used in combination in series or in parallel, and can cope with the expansion work of various types (size, height) of debris at the time of disaster. Therefore, it is more easy to handle than a conventional disaster rescue pneumatic jack, and it is a powerful tool for disaster rescue in place of the conventional disaster rescue pneumatic jack. Further, when the gas pressure jack according to the present invention is widely used as an automobile jack, it can be used as a rescue jack in the event of a disaster, so that it can exert great power in saving lives in the event of a disaster.

  In addition, the gas pressure structure according to the present invention can be folded thinly before the gas is injected, and when the gas is injected, the gas pressure structure is satisfactorily seated, and a plurality of structures are arranged in series or in parallel. It can be used for jacking up materials during civil engineering work and construction work.

It is a figure explaining schematic structure of an embodiment at the time of applying the present invention to a gas pressure structure, (a) is a top view and (b) is an elevation view of an II section of (a). It is. It is a figure which shows the state before gas injection | pouring of the gas pressure structure by this invention. It is a figure which shows the contact area with a load object at the time of inflating the conventional cushion-type pneumatic jack. It is a figure which shows that sitting is bad when the conventional cushion-type pneumatic jack is inflated. It is a figure which shows that a seat is bad when the conventional vehicle-mounted air jack is inflated. It is an elevation view when two gas pressure structures according to the present invention are arranged in series. It is an elevation view when two gas pressure structures according to the present invention are arranged in parallel. It is an elevational view when four gas pressure structures according to the present invention are arranged in series and in parallel. It is a top view at the time of arrange | positioning two gas pressure structures by this invention in parallel. It is a circuit diagram explaining schematic structure of one embodiment of a gas supply control device which injects gas into a plurality of gas pressure structures by the present invention. It is a circuit diagram explaining schematic structure of other embodiments of a gas supply control device which injects gas into a plurality of gas pressure structures by the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas pressure jack 2 Main body 3 Restraint member 4 Injection pipe 5 Restraint member 6 Top plate 7 Hole 8 Coupler 10 Gas supply control device 11 Changeover switch 12 Regulator 13 Main plug 14a Control switch (for gas supply)
14b Control switch (for gas discharge)
14c Control switch (for ejector drive)
20 Ejector 21 Relief valve 30 Gas supply source 40 Hose

Claims (3)

A gas pressure structure that can be inflated by pressurized gas and can be folded thinly when vented,
A main body made of a flexible material, which is cylindrical when inflated by pressurized gas, and a top plate that is a flat plate fixed respectively above and below the cylinder;
Furthermore, when inflated with pressurized gas, so that the cylindrical shape is maintained, the top plate can be held flat,
A constraining member disposed around the cylinder for constraining radial expansion of the cylinder;
A restraining member that is disposed inside the cylinder and restrains the vertical expansion of the upper and lower surfaces of the cylinder, and
A plurality of the gas pressure structures can be stacked in series via the top plate,
Furthermore, a plurality of the gas pressure structures can be used in parallel.
Gas pressure structure. A gas supply control device that controls supply of gas from a gas supply source to the gas pressure structure according to claim 1,
A regulator that controls the pressure of the gas;
A main plug that is arranged downstream of the regulator and can collectively open and close the flow of gas,
A control switch for controlling the supply and discharge of gas to and from the gas pressure structure;
A plurality of branch pipes branching downstream of the control switch;
A plurality of changeover switches connected to each of the plurality of branch pipes,
By operating the control switch, gas can be simultaneously supplied to the plurality of gas pressure structures, and gas can be simultaneously discharged from the plurality of gas pressure structures,
By operating the changeover switch, the supply of gas to the plurality of gas pressure structures can be individually controlled.
Gas supply control device. In order that gas can be discharged from the gas pressure structure according to claim 1 in a short time,
An ejector that sucks the gas inside the gas pressure structure using the pressurized gas of the gas supply source as a driving gas, and a control switch that controls the driving of the driving gas;
When driving the ejector, the gas can be simultaneously discharged in a short time from the plurality of gas pressure structures through the plurality of branch pipes.
The gas supply control device according to claim 2.

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