JP2010095335A - Balancer for hoising article - Google Patents
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- JP2010095335A JP2010095335A JP2008267103A JP2008267103A JP2010095335A JP 2010095335 A JP2010095335 A JP 2010095335A JP 2008267103 A JP2008267103 A JP 2008267103A JP 2008267103 A JP2008267103 A JP 2008267103A JP 2010095335 A JP2010095335 A JP 2010095335A
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本発明は、ワークや工具等の物品（吊持対象物）を吊持可能な付勢力を発生するガススプリングを備えた物品吊持用バランサに関する。 The present invention relates to an article suspension balancer including a gas spring that generates a biasing force capable of suspending an article (an object to be suspended) such as a workpiece or a tool.
従来、大重量のワーク、製品、工具を加工したり、取り扱ったりする工場等において、ワークや工具等の物品を持ち上げて移動させる際に天井クレーン等のフックに連結して物体を吊持する物品吊持用バランサであって、容易に着脱することができ且つ物品を搬送して所定位置に位置決めする際に人手により物品の位置を容易に微調整することができる物品吊持用バランサが種々の文献に提案されている。 Conventionally, an article that is connected to a hook of an overhead crane or the like when an article such as a workpiece or tool is lifted and moved in a factory that processes or handles a heavy workpiece, product, or tool. There are various suspension balancers that can be easily attached and detached, and that can easily finely adjust the position of the article manually when the article is transported and positioned at a predetermined position. Proposed in the literature.
ここで、上記のバランサは物品の重量と等しい付勢力を発生させるバランサ本体部と、フック等に連結される上下１対の吊りピース等を備えており、この種のバランサでは、圧縮ガスや加圧エアや油圧により付勢力を発生させるように構成されている。 Here, the balancer includes a balancer main body that generates an urging force equal to the weight of the article, and a pair of upper and lower suspension pieces connected to a hook or the like. The biasing force is generated by compressed air or hydraulic pressure.
例えば、特許文献１のバランサ装置においては、外部の装置から供給される流体圧（加圧エア又は油圧）が導入される複動型の伸縮シリンダによりバランス用の付勢力を発生させ、伸縮シリンダの外筒に対するピストンロッドの伸長動作を禁止するロック手段を、伸縮シリンダを覆うテレスコピック形のケース部材に設け、伸長動作を禁止した状態で重量物を安全に搬送移動させ、搬送移動後にロック手段によるロックを解除し、バランサ装置を機能させるように構成してある。 For example, in the balancer device of Patent Document 1, a biasing force for balance is generated by a double-acting expansion / contraction cylinder into which fluid pressure (pressurized air or hydraulic pressure) supplied from an external device is introduced. Locking means that prohibits the extension operation of the piston rod relative to the outer cylinder is provided on the telescopic case member that covers the telescopic cylinder. And the balancer device is made to function.
特許文献２に記載の重量自動感知バランス吊上装置においては、物品を吊持可能な複動型のエアシリンダと、このエアシリンダのエア作動室のエア圧を調節する調圧弁を含むエア回路を設け、物品の重量に応じたエア圧となるようにエア作動室のエア圧を調節し、物品の重量にバランスする付勢力を発生させる。特許文献３のエアバランサも、特許文献２のバランス吊上装置とほぼ同様の構成のものである。 In the weight automatic sensing balance lifting apparatus described in Patent Document 2, a double-acting air cylinder capable of hanging an article and an air circuit including a pressure regulating valve for adjusting the air pressure in the air working chamber of the air cylinder are provided. An urging force that balances with the weight of the article is generated by adjusting the air pressure in the air working chamber so as to obtain an air pressure corresponding to the weight of the article. The air balancer disclosed in Patent Document 3 has substantially the same configuration as the balance lifting device disclosed in Patent Document 2.
特許文献４に記載のガススプリング式バランサにおいては、プル型ガススプリングをケース内に収容し、ガススプリングのロッド部材の外端部と、ケースの端部に吊りピースを設けてある。ガススプリングに、ピストン部と、このピストン部から外部へ延びるロッドと、ピストン部からロッドと反対側へ延びる延長部であってピストン部よりも小径の延長部とを設け、ガススプリング本体内の環状のガス収容室に高圧の圧縮ガスを充填した。 In the gas spring type balancer described in Patent Document 4, a pull type gas spring is accommodated in a case, and a suspension piece is provided at the outer end of the rod member of the gas spring and at the end of the case. The gas spring is provided with a piston portion, a rod extending from the piston portion to the outside, and an extension portion extending from the piston portion to the opposite side of the rod and having a smaller diameter than the piston portion. The gas storage chamber was filled with high-pressure compressed gas.
特許文献１に記載のバランサ装置においては、外部のエア供給源や油圧供給源から伸縮シリンダにエアや油圧供給用のホース等を接続し、伸縮シリンダに供給される加圧エアや油圧を調節することで付勢力を調節するため装置が大型化する。さらに、ホース等を接続した状態でバランサ装置を使用することになり、ホースを処理するホースハンドリングが面倒になる。特許文献２，３のバランサ装置の場合も、上記の問題が残されている。 In the balancer device described in Patent Document 1, an air or hydraulic supply hose or the like is connected from an external air supply source or hydraulic supply source to the expansion cylinder, and the pressurized air or hydraulic pressure supplied to the expansion cylinder is adjusted. This increases the size of the device to adjust the biasing force. Furthermore, the balancer device is used in a state in which a hose or the like is connected, and hose handling for processing the hose becomes troublesome. In the case of the balancer devices of Patent Documents 2 and 3, the above problem remains.
特許文献４のガススプリング式バランサの場合、バランサの使用時に外部のガス供給源に接続しないため前記ホースは不要であるが、この種のバランサの場合、ガススプリングによる付勢力が、吊持対象の物品の重量と均衡することが必要であり、圧縮ガスのガス圧が高過ぎるとバランサとしての機能が得られない。圧縮ガスのガス圧が僅かに低い場合には、物品を吊持した際にガス収容室の収縮によりガス圧が増大してバランスすることもあるが、圧縮ガスのガス圧が低すぎる場合にも、バランサとしての機能が得られない。 In the case of the gas spring type balancer of Patent Document 4, the hose is unnecessary because it is not connected to an external gas supply source when the balancer is used, but in the case of this type of balancer, the urging force by the gas spring is not to be suspended. It is necessary to balance with the weight of the article, and if the pressure of the compressed gas is too high, the function as a balancer cannot be obtained. When the gas pressure of the compressed gas is slightly low, the gas pressure may increase and balance due to the contraction of the gas storage chamber when the article is suspended, but also when the gas pressure of the compressed gas is too low The function as a balancer cannot be obtained.
特許文献４のバランサでは、物品を吊持した状態においては圧縮ガスを充填できない構造になっているため、吊持対象の物品の重量に適した圧力の圧縮ガスを充填することが非常に難しい。しかし、ピストン部の外周部に設けたシール部材が、ガススプリング本体の内面に摺接する構造になっているため、バランサの製作段階において、ガススプリング本体の内面を鏡面に研磨加工する必要があるため、製作費が非常に高価になる。 Since the balancer of Patent Document 4 has a structure in which compressed gas cannot be filled in a state where the article is suspended, it is very difficult to fill the compressed gas with a pressure suitable for the weight of the article to be suspended. However, since the seal member provided on the outer periphery of the piston part is in a structure that slides on the inner surface of the gas spring body, it is necessary to polish the inner surface of the gas spring body to a mirror surface in the balancer manufacturing stage. , Production costs become very expensive.
本発明の目的は、ガススプリングのピストン部を省略し、直径の異なるロッド部の断面積差を介して付勢力を発生させるようにした物品吊持用バランサを提供すること、物品を吊持した状態で圧縮ガスを最適圧力に充填可能な物品吊持用バランサを提供することである。 An object of the present invention is to provide an article suspension balancer in which a piston portion of a gas spring is omitted and an urging force is generated through a cross-sectional area difference between rod portions having different diameters, and an article is suspended. An object suspension balancer that can be filled with compressed gas to an optimum pressure in a state.
請求項１の物品吊持用バランサは、ワークや工具等の物品を吊持可能な付勢力を発生するプル型ガススプリングを備えた物品吊持用バランサにおいて、前記プル型ガススプリングは、シリンダ本体とそのロッド側端部を塞ぐロッド側端壁部材とを含むシリンダ部材と、前記シリンダ部材の内部のガス収容室及びこのガス収容室に充填された圧縮ガスと、前記ロッド側端壁部材に形成された第１ロッド孔と、前記シリンダ部材のうちの前記第１ロッド孔に対向する対向壁部に前記第１ロッド孔と同心状に且つ第１ロッド孔よりも大径に形成された第２ロッド孔と、前記第１ロッド孔にガス密に挿通された第１ロッド部と、前記第２ロッド孔にガス密に挿入され且つ第１ロッド部と一体的に連結された第２ロッド部を有するロッド部材とを備え、前記第２ロッド部の断面積と第１ロッド部の断面積との断面積差と圧縮ガスのガス圧によってロッド部材をシリンダ部材に退入する方向へ付勢することを特徴としている。 2. The article suspension balancer according to claim 1, wherein the article suspension balancer includes a pull-type gas spring that generates an urging force capable of suspending an article such as a work or a tool. The pull-type gas spring includes a cylinder body. And a rod side end wall member that closes the rod side end, a gas storage chamber inside the cylinder member, a compressed gas filled in the gas storage chamber, and the rod side end wall member A first rod hole formed on the opposing wall portion of the cylinder member facing the first rod hole, concentrically with the first rod hole and having a larger diameter than the first rod hole. A rod hole, a first rod portion gastightly inserted into the first rod hole, and a second rod portion gastightly inserted into the second rod hole and integrally connected to the first rod portion. A rod member having It is characterized by urging in the direction of retracts the rod member to the cylinder member serial cross-sectional area difference between the sectional area of the second rod and the cross-sectional area of the first rod section and by the gas pressure of the compressed gas.
請求項２の物品吊持用バランサは、請求項１の発明において、前記ロッド部材の第１，第２ロッド部の境界部に形成されたフランジ部と、前記ロッド側端壁部材に形成された圧縮ガス充填口と、この圧縮ガス充填口に装着された圧縮ガス充填用バルブであって、ロッド部材が最大進出位置にあるときに前記フランジ部で操作されて開弁し且つロッド部材が最大進出位置よりも退入した状態のときに閉弁するように構成された圧縮ガス充填用バルブとを備えたことを特徴としている。 A balancer for suspending an article according to a second aspect is the invention according to the first aspect, wherein the balancer is formed at a flange portion formed at a boundary between the first and second rod portions of the rod member and at the rod-side end wall member. A compressed gas filling port and a compressed gas filling valve attached to the compressed gas filling port, which is operated by the flange when the rod member is at the maximum advanced position, and the rod member is fully advanced. And a compressed gas filling valve configured to close when the valve is retracted from the position.
請求項３の物品吊持用バランサは、請求項１又は２の発明において、前記ロッド側端壁部材に圧縮ガス排出路を形成し、この圧縮ガス排出路に接続され且つガス収容室内の圧縮ガスの一部を外界へ放出させる為のガス放出操作手段を設けたことを特徴としている。 According to a third aspect of the present invention, there is provided the article suspension balancer according to the first or second aspect, wherein a compressed gas discharge passage is formed in the rod side end wall member, and the compressed gas is connected to the compressed gas discharge passage and in the gas storage chamber. It is characterized in that a gas discharge operation means for releasing a part of the gas to the outside is provided.
請求項４の物品吊持用バランサは、請求項１〜３の何れかの発明において、前記対向壁部は、シリンダ本体内に装着された対向壁部形成部材で構成されたことを特徴としている。請求項５の物品吊持用バランサは、請求項１〜４の何れかの発明において、前記ロッド部材の第１ロッド部の先端部にアイボルトを連結し、前記シリンダ部材の対向壁部側の端部にシャクルを設けたことを特徴としている。 The balancer for suspending an article according to a fourth aspect is characterized in that, in the invention according to any one of the first to third aspects, the opposing wall portion is constituted by an opposing wall portion forming member mounted in the cylinder body. . According to a fifth aspect of the present invention, there is provided the article suspension balancer according to any one of the first to fourth aspects, wherein an eyebolt is connected to a distal end portion of the first rod portion of the rod member, and an end of the cylinder member on the opposite wall portion side. It is characterized by having a shackle in the part.
請求項６の物品吊持用バランサは、請求項２の発明において、前記圧縮ガス充填用バルブとフランジ部を介して、前記ガス収容室に充填される圧縮ガスのガス圧は、前記吊持対象物の重量に等しい付勢力を発生させる大きさに自動的に設定可能であることを特徴としている。 According to a sixth aspect of the present invention, there is provided the article suspension balancer according to the second aspect of the present invention, wherein the gas pressure of the compressed gas filled in the gas storage chamber via the compressed gas filling valve and the flange portion is the object to be suspended. It is characterized in that it can be automatically set to a magnitude that generates an urging force equal to the weight of the object.
請求項１の発明によれば、ロッド側端壁部材に形成された第１ロッド孔と、この第１ロッド孔に対向する対向壁部に形成され第１ロッド孔よりも大径の第２ロッド孔を設け、第１ロッド孔にガス密に挿通された第１ロッド部と、この第１ロッド部に一体的に連結され第２ロッド孔にガス密に挿入された第２ロッド部とを備え、第２ロッド部の断面積と第１ロッド部の断面積との断面積差と圧縮ガスのガス圧によってロッド部材をシリンダ部材に退入する方向へ付勢するように構成したため、ガススプリングのピストン部と、そのピストン部がガス密に摺接するシリンダ孔を省略することができるため、シリンダ孔の研磨加工を省略できるため、ガススプリングの製作費を低減することができる。 According to the first aspect of the present invention, the first rod hole formed in the rod-side end wall member and the second rod formed in the opposing wall portion facing the first rod hole and having a diameter larger than that of the first rod hole. And a first rod portion gas-tightly inserted into the first rod hole, and a second rod portion integrally connected to the first rod portion and gas-tightly inserted into the second rod hole. Since the rod member is urged in the direction of retreating to the cylinder member by the cross-sectional area difference between the cross-sectional area of the second rod portion and the cross-sectional area of the first rod portion and the gas pressure of the compressed gas, Since the piston portion and the cylinder hole in which the piston portion is in gas-tight sliding contact can be omitted, polishing of the cylinder hole can be omitted, so that the manufacturing cost of the gas spring can be reduced.
請求項２の発明によれば、ロッド部材の第１，第２ロッド部の境界部に形成されたフランジ部と、ロッド側端壁部材に形成された圧縮ガス充填口と、この圧縮ガス充填口に装着された圧縮ガス充填用バルブとを有し、この圧縮ガス充填用バルブは、ロッド部材が最大進出位置にあるときにフランジ部で操作されて開弁し且つロッド部材が最大進出位置よりも退入した状態のときに閉弁するように構成されているため、次のようにして圧縮ガスを充填することができる。 According to invention of Claim 2, the flange part formed in the boundary part of the 1st, 2nd rod part of a rod member, the compressed gas filling port formed in the rod side end wall member, and this compressed gas filling port And the compressed gas filling valve is operated by the flange portion when the rod member is at the maximum advanced position, and the rod member is opened from the maximum advanced position. Since it is configured to close when it is in the retracted state, it can be filled with compressed gas as follows.
圧縮ガス充填前からバランサを介して物品を吊持し、ロッド部材が最大限伸長し、フランジ部で圧縮ガス充填用バルブを開弁させた状態において、圧縮ガスをガス収容室に充填していき、圧縮ガスの圧力が物品の重量にバランスする付勢力を発揮する圧力以上に昇圧すると、ロッド部材がシリンダ本体へ退入移動するため、圧縮ガス充填用バルブが閉弁状態となるから、その時点で、圧縮ガスの充填が終了する。このように、物品の重量にバランスする付勢力を発揮する圧力となるように、圧縮ガスを確実に充填することができるため、バランサの使い勝手が良くなり、圧縮ガス充填の作業能率を高めることができる。 Hold the article through the balancer before filling the compressed gas, the rod member is extended to the maximum, and the compressed gas filling valve is opened at the flange, and the compressed gas is filled into the gas storage chamber. When the pressure of the compressed gas rises above the pressure that exerts the urging force that balances the weight of the article, the rod member moves back into the cylinder body, so the compressed gas filling valve is closed. This completes the filling of the compressed gas. As described above, since the compressed gas can be reliably filled so that the pressure exerting the urging force balanced with the weight of the article can be obtained, the usability of the balancer is improved and the working efficiency of the compressed gas filling can be improved. it can.
請求項３の発明によれば、前記ロッド側端壁部材に圧縮ガス排出路を形成し、この圧縮ガス排出路に接続され且つガス収容室内の圧縮ガスの一部を外界へ放出させる為のガス放出操作手段を設けたため、バランサにより吊持する物品の重量が変更された場合など、ガス放出操作手段を操作してガス収容室内の圧縮ガスの一部を外界へ放出させることができる。 According to the invention of claim 3, the compressed gas discharge passage is formed in the rod side end wall member, and the gas is connected to the compressed gas discharge passage and discharges a part of the compressed gas in the gas storage chamber to the outside. Since the release operation means is provided, a part of the compressed gas in the gas storage chamber can be released to the outside by operating the gas release operation means, for example, when the weight of the article suspended by the balancer is changed.
請求項４の発明によれば、前記対向壁部は、シリンダ本体内に装着された対向壁部形成部材で構成されたため、シリンダ部材の構造が簡単化する。
。請求項５の発明によれば、前記ロッド部材の第１ロッド部の先端部にアイボルトを連結し、前記シリンダ部材の対向壁部側の端部にシャクルを設けたため、クレーン等の吊持手段の吊具と、吊持対象の物品との間にバランサを介装するのに便利である。
According to the invention of claim 4, since the opposing wall portion is constituted by the opposing wall portion forming member mounted in the cylinder body, the structure of the cylinder member is simplified.
. According to the invention of claim 5, since the eyebolt is connected to the tip of the first rod portion of the rod member, and the shackle is provided at the end of the cylinder member on the opposite wall portion side, This is convenient for interposing a balancer between the hanging tool and the article to be held.
請求項６の発明によれば、前記ガス収容室に充填される圧縮ガスのガス圧は、前記圧縮ガス充填用バルブとフランジ部を介して、前記吊持対象物の重量に等しい付勢力を発生させる大きさに自動的に設定可能であるため、圧縮ガスの圧力を調整する作業を短時間で行うことができる。 According to invention of Claim 6, the gas pressure of the compressed gas with which the said gas storage chamber is filled generate | occur | produces the urging force equal to the weight of the said suspension target object through the said compressed gas filling valve | bulb and a flange part. Since the size can be automatically set, the operation of adjusting the pressure of the compressed gas can be performed in a short time.
以下、本発明を実施するための最良の形態について実施例に基づいて説明する。 Hereinafter, the best mode for carrying out the present invention will be described based on examples.
図１に示すように、建物の天井側に設置される天井クレーン１は、運転部２と本体３とトロリ４とワイヤー５とフック６等を有し、トロリ４から下方へ延びるワイヤー５の下端に上側フック６が設けられ、ワークや工具等の大重量の物品９はロープ８で支持され、ロープ８の上端に下側フック７が設けられ、上側フック６と下側フック７の間にプル型ガススプリングを備えた物品吊持用バランサ１０が介装される。天井クレーン１により、物品吊持用バランサ１０を介して、物品９が吊持された状態では、ガススプリングの圧縮ガスにより物品９の重量と等しい付勢力が発生するまで、物品吊持用バランサ１０のロッド部材１３が僅かに進出して圧縮ガスのガス圧が自動的に調整され、上記付勢力と物品９の重量がバランス状態になる。 As shown in FIG. 1, an overhead crane 1 installed on the ceiling side of a building includes a driving unit 2, a main body 3, a trolley 4, a wire 5, a hook 6, and the like, and a lower end of the wire 5 extending downward from the trolley 4. An upper hook 6 is provided, a heavy-weight article 9 such as a workpiece or a tool is supported by a rope 8, a lower hook 7 is provided at the upper end of the rope 8, and a pull is placed between the upper hook 6 and the lower hook 7. An article suspension balancer 10 having a mold gas spring is interposed. In a state where the article 9 is suspended by the overhead crane 1 via the article suspension balancer 10, the article suspension balancer 10 is generated until a biasing force equal to the weight of the article 9 is generated by the compressed gas of the gas spring. The rod member 13 slightly advances and the gas pressure of the compressed gas is automatically adjusted, and the urging force and the weight of the article 9 are balanced.
次に、物品吊持用バランサ１０について詳しく説明する。
図２に示すように、この物品吊持用バランサ１０は、ワークや工具等の物品を吊持可能な付勢力を発生するプル型ガススプリング１１を備えたバランサである。このプル型ガススプリング１１は、シリンダ部材１２と、このシリンダ部材１２の内部のガス収容室１３に充填される高圧（例えば、７〜１０ＭＰａ）の圧縮窒素ガスＧと、ロッド部材１４と、、ポート形成部材１５などを備えている。
Next, the article suspension balancer 10 will be described in detail.
As shown in FIG. 2, the article suspension balancer 10 is a balancer including a pull-type gas spring 11 that generates an urging force capable of suspending an article such as a workpiece or a tool. The pull-type gas spring 11 includes a cylinder member 12, a high-pressure (for example, 7 to 10 MPa) compressed nitrogen gas G that is filled in a gas storage chamber 13 inside the cylinder member 12, a rod member 14, and a port. A forming member 15 and the like are provided.
シリンダ部材１２は、円筒体からなるシリンダ本体１６と、そのロッド側端部を塞ぐロッド側端壁部材１７と、ロッド側端壁部材１７に対向する対向壁部１８ａを形成する対向壁部形成部材１８と、対向壁部形成部材１８の下端を塞ぐ蓋部材１９とを有する。ロッド側端壁部材１７は、シリンダ本体１６の上端部分に内嵌してストップリング１７ａにより抜け止めされて固定されている。シリンダ本体１６とロッド側端壁部材１７の間はシール部材１７ｂで封止されている。 The cylinder member 12 includes a cylinder body 16 formed of a cylindrical body, a rod side end wall member 17 that closes the rod side end, and an opposing wall portion forming member that forms an opposing wall portion 18a that faces the rod side end wall member 17. 18 and a lid member 19 that closes the lower end of the opposing wall portion forming member 18. The rod-side end wall member 17 is fitted into the upper end portion of the cylinder body 16 and is secured and fixed by a stop ring 17a. A space between the cylinder body 16 and the rod side end wall member 17 is sealed with a seal member 17b.
前記対向壁部形成部材１８は、シリンダ本体１６の下端側部分に内嵌してストップリング１８ｂにより抜け止めされて固定されている。シリンダ本体１６と対向壁部形成部材１８の間はシール部材１８ｃで封止されている。蓋部材１９は、複数のボルトで対向壁部形成部材１８に固定されている。 The opposing wall portion forming member 18 is fitted into the lower end side portion of the cylinder body 16 and is secured and fixed by a stop ring 18b. The cylinder body 16 and the facing wall forming member 18 are sealed with a seal member 18c. The lid member 19 is fixed to the opposing wall portion forming member 18 with a plurality of bolts.
前記ロッド側端壁部材１７の上端にポート形成部材１５が当接され、このポート形成部材１５は図示外の複数のボルトによりロッド側端壁部材１７に固定されている。ロッド部材１４は、上半部をなす第１ロッド部１４ａと、下半部をなし且つ第１ロッド部１４ａよりも大径の第２ロッド部１４ｂと、第１，第２ロッド部１４ａ，１４ｂの境界部に形成されたフランジ部１４ｃとを有する。 A port forming member 15 is brought into contact with the upper end of the rod side end wall member 17, and the port forming member 15 is fixed to the rod side end wall member 17 by a plurality of bolts (not shown). The rod member 14 includes a first rod portion 14a that forms the upper half, a second rod portion 14b that forms the lower half and has a larger diameter than the first rod portion 14a, and the first and second rod portions 14a and 14b. And a flange portion 14c formed at the boundary portion.
第１ロッド部１４ａは、ロッド側端壁部材１７とポート形成部材１５に形成された第１ロッド孔２０にガス密に挿通されてシリンダ部材１２の外部まで突出している。対向壁部形成部材１８には、第１ロッド孔２０に対向し且つ第１ロッド孔２０と同心状で第１ロッド孔２０よりも大径の第２ロッド孔２１と、この第２ロッド孔２１の下端に連通し且つ第２ロッド孔２１よりも大径の逃し孔２２とが形成されている。第２ロッド部１４ｂが、第２ロッド孔２１にガス密に挿入されている。第１ロッド孔２０の周面部には、シール部材２３とブッシュ２４とスクレーパ２５が装着されている。第２ロッド孔２２の周面部には、シール部材２６とブッシュ２７が装着されている。逃し孔２２は呼吸孔２２ａにより大気開放されている。 The first rod portion 14 a is gas-tightly inserted into the first rod hole 20 formed in the rod side end wall member 17 and the port forming member 15 and protrudes to the outside of the cylinder member 12. The opposing wall forming member 18 has a second rod hole 21 facing the first rod hole 20 and concentric with the first rod hole 20 and having a larger diameter than the first rod hole 20, and the second rod hole 21. An escape hole 22 communicating with the lower end of the first rod and having a diameter larger than that of the second rod hole 21 is formed. The second rod portion 14b is inserted into the second rod hole 21 in a gastight manner. A seal member 23, a bush 24, and a scraper 25 are attached to the peripheral surface portion of the first rod hole 20. A seal member 26 and a bush 27 are mounted on the peripheral surface portion of the second rod hole 22. The escape hole 22 is opened to the atmosphere by a breathing hole 22a.
ガス収容室１３はシリンダ部材１２の内部にロッド部材１４の外周側に環状に形成され、このガス収容室１３に圧縮ガスＧが後述のようにして充填される。
前記第２ロッド部１４ｂの断面積と第１ロッド部１４ａの断面積との断面積差と圧縮ガスＧのガス圧によってロッド部材１４をシリンダ部材１２に退入させる方向へ付勢する付勢力が発生する。
The gas storage chamber 13 is formed in an annular shape inside the cylinder member 12 on the outer peripheral side of the rod member 14, and the gas storage chamber 13 is filled with the compressed gas G as described later.
An urging force that urges the rod member 14 in the direction of retracting the cylinder member 12 by the difference in cross-sectional area between the cross-sectional area of the second rod portion 14b and the cross-sectional area of the first rod portion 14a and the gas pressure of the compressed gas G is generated. appear.
ロッド側端壁部材１７とポート形成部材１５には、圧縮ガス充填ポート３０と、圧縮ガス充填口３１とが形成されている。この圧縮ガス充填口３１には圧縮ガス充填用バルブ３２が装着されている。この圧縮ガス充填用バルブ３２は、ロッド部材１４が最大進出位置（図２に図示の位置）にあるときにそのピン部材３２ａがフランジ部１４ｃで操作されて開弁し且つロッド部材１４が最大進出位置よりも退入した状態のときに閉弁するように構成されている。 A compressed gas filling port 30 and a compressed gas filling port 31 are formed in the rod side end wall member 17 and the port forming member 15. The compressed gas filling port 31 is equipped with a compressed gas filling valve 32. When the rod member 14 is in the maximum advanced position (the position shown in FIG. 2), the compressed gas filling valve 32 is opened by the pin member 32a being operated by the flange portion 14c, and the rod member 14 is fully advanced. The valve is configured to close when it is retracted from the position.
ロッド部材１４にはフランジ部１４ｃの上側に位置する硬質ゴム製の環状ストッパ３４が外嵌され、この環状ストッパ３４によりフランジ部１４ｃを受け止めた状態で最大進出位置となる。圧縮ガス充填ポート３０には、クイックカプラの雄カプラ部材３３が付設され、この雄カプラ部材３３に圧縮ガス供給手段のホースの先端の雌カプラ部材を接続した状態で、圧縮ガス供給手段からガス収容室１３内へ圧縮ガスを供給可能に構成されている。 An annular stopper 34 made of hard rubber located on the upper side of the flange portion 14c is fitted onto the rod member 14, and the rod member 14 reaches the maximum advancing position in a state where the flange portion 14c is received by the annular stopper 34. The compressed gas filling port 30 is provided with a male coupler member 33 of a quick coupler, and the male coupler member 33 is connected to the female coupler member at the tip of the hose of the compressed gas supply means, and gas is received from the compressed gas supply means. The compressed gas can be supplied into the chamber 13.
ロッド側端壁部材１７と、ポート形成部材１５には、圧縮ガス排出ポート３５と圧縮ガス排出路３６が形成され、圧縮ガス排出ポート３５には、ガス放出操作手段としてのガス放出弁３７が装着されている。ガス放出弁３７は内部にニードル弁を有し、操作ノブ３８を回してガス放出弁３７を開弁操作することでガス収容室１３内の圧縮ガスの一部を外界へ微小量ずつ放出することができる。 The rod side end wall member 17 and the port forming member 15 are formed with a compressed gas discharge port 35 and a compressed gas discharge path 36, and the compressed gas discharge port 35 is equipped with a gas discharge valve 37 as a gas discharge operation means. Has been. The gas release valve 37 has a needle valve inside, and by rotating the operation knob 38 to open the gas release valve 37, a part of the compressed gas in the gas storage chamber 13 is released to the outside by a minute amount. Can do.
ロッド部材１４の第１ロッド部１４ａの先端部にアイボルト４０が連結されている。対向壁部形成部材１８に固定された蓋部材１９には下方へ突出する突出片１９ｅが一体形成され、この突出片１８ｅにシャクル４１が連結されている。 An eyebolt 40 is connected to the tip of the first rod portion 14 a of the rod member 14. A projecting piece 19e projecting downward is integrally formed on the lid member 19 fixed to the facing wall forming member 18, and a shackle 41 is connected to the projecting piece 18e.
次に、以上説明した物品吊持用バランサ１０の作用、効果について説明する。
ガススプリング１１のガス収容室１３に圧縮ガスを充填する場合、まず、図１に示すように、バランサ１０を介して物品９を吊持した状態にする。
次に、圧縮ガス供給手段から圧縮ガス充填ポート３０と圧縮ガス充填口３１と圧縮ガス充填バルブ３２を介してガス収容室１３に圧縮ガスを徐々に充填していく。
当初、ガス収容室１３内のガス圧が低いうちは、ロッド部材１４を退入駆動する付勢力は小さいためフランジ部１４ｃが圧縮ガス充填バルブ３２のピン部材３２ａを押圧して開弁状態に維持するため、圧縮ガスがガス収容室１３内へ充填される。
Next, the operation and effects of the article suspension balancer 10 described above will be described.
When filling the gas storage chamber 13 of the gas spring 11 with the compressed gas, first, the article 9 is suspended through the balancer 10 as shown in FIG.
Next, the compressed gas is gradually filled into the gas storage chamber 13 from the compressed gas supply means through the compressed gas filling port 30, the compressed gas filling port 31, and the compressed gas filling valve 32.
Initially, while the gas pressure in the gas storage chamber 13 is low, the urging force for retracting and driving the rod member 14 is small, so the flange portion 14c presses the pin member 32a of the compressed gas filling valve 32 and maintains the valve open state. Therefore, the compressed gas is filled into the gas storage chamber 13.
圧縮ガスの充填が進行し、ガス収容室１３内の圧縮ガスのガス圧が上昇し、ガススプリング１１により物品９の重量と等しい付勢力が発生し始めると、図３に示すように、ロッド部材１４が退入するため、吊持された物品９が無重力状態に近い浮揚状態になる。すると、ロッド部材１４のフランジ部１４ｃがピン部材３２ａから離れるため、圧縮ガス充填バルブ３２が閉弁状態になる。こうして、ガス収容室１３に充填される圧縮ガスのガス圧が、前記吊持対象物の重量に等しい付勢力を発生させる大きさに自動的に設定される。そのため、ガス収容室１３に充填する圧縮ガスの圧力調整の作業を短時間に能率的に行うことができる。 When the filling of the compressed gas proceeds, the gas pressure of the compressed gas in the gas storage chamber 13 rises, and the urging force equal to the weight of the article 9 starts to be generated by the gas spring 11, as shown in FIG. Since 14 retreats, the suspended article 9 enters a levitation state close to a weightless state. Then, since the flange portion 14c of the rod member 14 is separated from the pin member 32a, the compressed gas filling valve 32 is closed. Thus, the gas pressure of the compressed gas filled in the gas storage chamber 13 is automatically set to a magnitude that generates an urging force equal to the weight of the suspended object. Therefore, the operation of adjusting the pressure of the compressed gas filled in the gas storage chamber 13 can be performed efficiently in a short time.
第１ロッド部１４ａと第２ロッド部１４ｂの直径の差を小さく設定することも可能であり、その場合ガススプリング１１による付勢力を小さくすることができるため、比較的小さな重量の物品の吊持にも適用可能になり、汎用性に優れたものとなる。尚、この場合、ガス圧に対する感度が鈍いため、ガス圧を大きくすることも可能である。 The difference in diameter between the first rod portion 14a and the second rod portion 14b can be set small. In this case, since the urging force by the gas spring 11 can be reduced, it is possible to suspend an article having a relatively small weight. It can be applied to the above, and it has excellent versatility. In this case, since the sensitivity to the gas pressure is low, the gas pressure can be increased.
一方、物品吊持用バランサ１０を介して吊持する物品９の重量が大きくなる場合には、前記と同様に、当初フランジ部１４ｃにより圧縮ガス充填バルブ３２を開弁状態にして圧縮ガスを充填し、その後、物品９の重量に等しい付勢力を発生する大きさのガス圧になるまで圧縮ガスを充填してから、圧縮ガス充填バルブ３２を閉弁状態に切換えればよい。
他方、物品吊持用バランサ１０を介して吊持する物品９の重量が小さくなる場合には、ガス放出弁３７を操作して圧縮ガスを外界へ放出し、その後、前記と同様にして、物品９の重量に等しい付勢力を発生する大きさの圧力になるまで圧縮ガスを充填すればよい。
On the other hand, when the weight of the article 9 suspended via the article suspension balancer 10 is increased, the compressed gas filling valve 32 is initially opened by the flange portion 14c and filled with the compressed gas as described above. Then, after the compressed gas is filled until the gas pressure is such that the urging force equal to the weight of the article 9 is generated, the compressed gas filling valve 32 may be switched to the closed state.
On the other hand, when the weight of the article 9 suspended via the article suspension balancer 10 is reduced, the compressed gas is discharged to the outside by operating the gas release valve 37, and then the article is operated in the same manner as described above. What is necessary is just to fill with compressed gas until it becomes the pressure of the magnitude | size which generate | occur | produces the urging | biasing force equal to the weight of 9.
このバランサ１０に組み込んだプル型ガススプリング１１にはロッド部材１４に連結されたピストン部が存在しないから、シリンダ本体１６の内面を鏡面状に研磨する必要がなく、第１，第２ロッド部１４ａ，１４ｂの表面のみを鏡面状に研磨すればよい。そのため、バランサ１０の製作費を低減することができ、バランサ１０の耐久性を高めることができる。 Since there is no piston portion connected to the rod member 14 in the pull type gas spring 11 incorporated in the balancer 10, there is no need to polish the inner surface of the cylinder body 16 into a mirror shape, and the first and second rod portions 14a. , 14b may be polished in a mirror-like manner only. Therefore, the production cost of the balancer 10 can be reduced, and the durability of the balancer 10 can be increased.
対向壁部１８ａを、シリンダ本体１６内に装着した対向壁部形成部材１８で構成したため、シリンダ部材１２の構造が簡単化する。ロッド部材１４の第１ロッド部１４ａの先端部にアイボルト４０を連結し、シリンダ部材１２の対向壁部１８ａ側の端部にシャクル４１を設けたため、クレーン等の吊持手段の吊具と、吊持対象の物品９との間にバランサ１０を介装するのに便利である。 Since the opposing wall portion 18a is constituted by the opposing wall portion forming member 18 mounted in the cylinder body 16, the structure of the cylinder member 12 is simplified. Since the eyebolt 40 is connected to the tip of the first rod portion 14a of the rod member 14 and the shackle 41 is provided at the end of the cylinder member 12 on the opposite wall 18a side, This is convenient for interposing the balancer 10 with the article 9 to be held.
次に、前記実施例を部分的に変更する例について説明する。
１］本実施例のバランサ１０では昇降ストロークが小さいため、物品の小ストロークの移動に好適である。しかし、昇降ストロークの大きなバランサに構成することも可能である。２］本実施例のバランサ１０では第１ロッド部１４ａと第２ロッド部１４ｂの直径の差を小さく設定してあるが、第１ロッド部１４ａと第２ロッド部１４ｂの直径の差を大きく設定して、大重量の物品を吊持するのに好適のバランサに構成することもできる。
３］その他、当業者であれば、前記実施例を部分的に変更して実施可能である。
Next, an example in which the above embodiment is partially changed will be described.
1] Since the balancer 10 of this embodiment has a small up-and-down stroke, it is suitable for moving a small stroke of an article. However, it is also possible to configure a balancer with a large lifting stroke. 2] In the balancer 10 of the present embodiment, the difference in diameter between the first rod portion 14a and the second rod portion 14b is set small, but the difference in diameter between the first rod portion 14a and the second rod portion 14b is set large. Thus, a balancer suitable for suspending a heavy article can be configured.
3] Others can be implemented by those skilled in the art by partially changing the above embodiment.
９ 物品
１０ 物品吊持用バランサ
１１ プル型ガススプリング
１２ シリンダ部材
１３ ガス収容室
１４ ロッド部材
１４ａ 第１ロッド部
１４ｂ 第２ロッド部
１４ｃ フランジ部
１６ シリンダ本体
１７ ロッド側端壁部材
１８ 対向壁部形成部材
１８ａ 対向壁部
２０ 第１ロッド孔
２１ 第２ロッド孔
３１ 圧縮ガス充填口
３２ 圧縮ガス充填用バルブ
３６ 圧縮ガス排出路
３７ ガス放出弁（ガス放出手段）
9 Goods 10 Goods suspension balancer 11 Pull type gas spring 12 Cylinder member 13 Gas storage chamber 14 Rod member 14a First rod part 14b Second rod part 14c Flange part 16 Cylinder body 17 Rod side end wall member 18 Opposing wall part formation Member 18a Opposite wall 20 First rod hole 21 Second rod hole 31 Compressed gas filling port 32 Compressed gas filling valve 36 Compressed gas discharge passage 37 Gas release valve (gas release means)
Claims (6)
前記プル型ガススプリングは、
シリンダ本体とそのロッド側端部を塞ぐロッド側端壁部材とを含むシリンダ部材と、 前記シリンダ部材の内部のガス収容室及びこのガス収容室に充填された圧縮ガスと、
前記ロッド側端壁部材に形成された第１ロッド孔と、
前記シリンダ部材のうちの前記第１ロッド孔に対向する対向壁部に前記第１ロッド孔と同心状に且つ第１ロッド孔よりも大径に形成された第２ロッド孔と、
前記第１ロッド孔にガス密に挿通された第１ロッド部と、前記第２ロッド孔にガス密に挿入され且つ第１ロッド部と一体的に連結された第２ロッド部を有するロッド部材とを備え、
前記第２ロッド部の断面積と第１ロッド部の断面積との断面積差と圧縮ガスのガス圧によってロッド部材をシリンダ部材に退入する方向へ付勢することを特徴とする物品吊持用バランサ。 In an article suspension balancer provided with a pull-type gas spring that generates an urging force capable of suspending an article such as a workpiece or a tool,
The pull type gas spring is
A cylinder member including a cylinder body and a rod-side end wall member that closes the rod-side end, a gas storage chamber inside the cylinder member, and a compressed gas filled in the gas storage chamber;
A first rod hole formed in the rod side end wall member;
A second rod hole formed concentrically with the first rod hole and having a larger diameter than the first rod hole in an opposing wall portion of the cylinder member facing the first rod hole;
A first rod portion gas-tightly inserted into the first rod hole, and a rod member having a second rod portion gas-tightly inserted into the second rod hole and integrally connected to the first rod portion; With
The article suspension is characterized in that the rod member is biased in the direction of retreating into the cylinder member by the difference in cross-sectional area between the cross-sectional area of the second rod portion and the cross-sectional area of the first rod portion and the gas pressure of the compressed gas. Balancer.
前記ロッド側端壁部材に形成された圧縮ガス充填口と、
この圧縮ガス充填口に装着された圧縮ガス充填用バルブであって、ロッド部材が最大進出位置にあるときに前記フランジ部で操作されて開弁し且つロッド部材が最大進出位置よりも退入した状態のときに閉弁するように構成された圧縮ガス充填用バルブとを備えたことを特徴とする請求項１に記載の物品吊持用バランサ。 A flange portion formed at the boundary between the first and second rod portions of the rod member;
A compressed gas filling port formed in the rod side end wall member;
A compressed gas filling valve attached to the compressed gas filling port, which is operated by the flange portion when the rod member is at the maximum advanced position and is opened, and the rod member is retracted from the maximum advanced position. 2. The article suspension balancer according to claim 1, further comprising a compressed gas filling valve configured to close when in a state.
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| JP2008267103A JP5313618B2 (en) | 2008-10-16 | 2008-10-16 | Balancer for suspending goods |
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| JP2008267103A JP5313618B2 (en) | 2008-10-16 | 2008-10-16 | Balancer for suspending goods |
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| JP5313618B2 JP5313618B2 (en) | 2013-10-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016165377A (en) * | 2015-03-10 | 2016-09-15 | 日立アプライアンス株式会社 | Washing machine |
| CN112555321A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Air spring with lifting function, trailer bogie and rubber wheel train |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036992U (en) * | 1973-08-08 | 1975-04-17 | ||
| JPS61197079U (en) * | 1985-05-17 | 1986-12-09 | ||
| JPH0289800A (en) * | 1988-09-26 | 1990-03-29 | Einosuke Iwata | Device for lifting and supporting material of ceiling board and the like |
| JPH05178582A (en) * | 1991-12-24 | 1993-07-20 | Sanei Seiki Seisakusho:Kk | Load detecting device |
| JP3133267U (en) * | 2007-04-24 | 2007-07-05 | パスカルエンジニアリング株式会社 | Gas spring type balancer |
| JP2009067530A (en) * | 2007-09-13 | 2009-04-02 | Pascal Engineering Corp | Gas spring type balancer |
| JP2009084041A (en) * | 2007-10-03 | 2009-04-23 | Pascal Engineering Corp | Gas spring type balancer device |
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- 2008-10-16 JP JP2008267103A patent/JP5313618B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5036992U (en) * | 1973-08-08 | 1975-04-17 | ||
| JPS61197079U (en) * | 1985-05-17 | 1986-12-09 | ||
| JPH0289800A (en) * | 1988-09-26 | 1990-03-29 | Einosuke Iwata | Device for lifting and supporting material of ceiling board and the like |
| JPH05178582A (en) * | 1991-12-24 | 1993-07-20 | Sanei Seiki Seisakusho:Kk | Load detecting device |
| JP3133267U (en) * | 2007-04-24 | 2007-07-05 | パスカルエンジニアリング株式会社 | Gas spring type balancer |
| JP2009067530A (en) * | 2007-09-13 | 2009-04-02 | Pascal Engineering Corp | Gas spring type balancer |
| JP2009084041A (en) * | 2007-10-03 | 2009-04-23 | Pascal Engineering Corp | Gas spring type balancer device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016165377A (en) * | 2015-03-10 | 2016-09-15 | 日立アプライアンス株式会社 | Washing machine |
| CN112555321A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Air spring with lifting function, trailer bogie and rubber wheel train |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5313618B2 (en) | 2013-10-09 |
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