JP2001032805A - Method and device for bleeding hydraulic apparatus of air - Google Patents
Method and device for bleeding hydraulic apparatus of airInfo
- Publication number
- JP2001032805A JP2001032805A JP11205585A JP20558599A JP2001032805A JP 2001032805 A JP2001032805 A JP 2001032805A JP 11205585 A JP11205585 A JP 11205585A JP 20558599 A JP20558599 A JP 20558599A JP 2001032805 A JP2001032805 A JP 2001032805A
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- Prior art keywords
- tank
- air
- liquid
- pressure
- hydraulic
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油圧シリンダなど
の油圧機器を始めとする液圧機器のエア抜きを行うため
の方法及び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for bleeding hydraulic equipment such as hydraulic equipment such as hydraulic cylinders.
【０００２】[0002]
【従来の技術】一般に、油圧シリンダは、設置時に必ず
エアを抜く必要がある。また、油圧シリンダの検査時に
おいても、内部に作動油を充満させてエアが残留しない
ようにエア抜きを行う必要がある。2. Description of the Related Art Generally, when a hydraulic cylinder is installed, it is necessary to release air. Also, at the time of inspection of the hydraulic cylinder, it is necessary to fill the inside with hydraulic oil and bleed air so that air does not remain.
【０００３】従来において、油圧シリンダには、エア抜
きのための専用のバルブ（エア抜きバルブ）が設けられ
ている。一般に、エア抜きバルブは、シリンダカバー又
はシリンダチューブに弁座及びネジ穴が設けられ、弁座
にスチールボールが装着され、ネジ穴にネジプラグがネ
ジ込まれている。[0003] Conventionally, a dedicated valve (air release valve) for releasing air is provided in a hydraulic cylinder. Generally, an air release valve is provided with a valve seat and a screw hole on a cylinder cover or a cylinder tube, a steel ball is mounted on the valve seat, and a screw plug is screwed into the screw hole.
【０００４】常時は、スチールボールがネジプラグの先
端によって押されて弁座に密着しており、弁座に通じる
内部管路は閉ざされている。そこで、ネジ込まれたネジ
プラグを六角レンチなどで回転させて緩めることによ
り、スチールボールと弁座との間に隙間ができ、シリン
ダ内のエアが作動油と一緒に内部管路から出てくる。こ
によってエア抜きが行われる。[0004] Normally, the steel ball is pushed by the tip of the screw plug and is in close contact with the valve seat, and the internal conduit leading to the valve seat is closed. Then, by loosening the screwed screw plug by rotating it with a hexagon wrench or the like, a gap is formed between the steel ball and the valve seat, and the air in the cylinder comes out of the internal pipe together with the hydraulic oil. As a result, air is removed.
【０００５】[0005]
【発明が解決しようとする課題】しかし、上に述べた従
来のエア抜きバルブでは、エア抜きを完全に行うために
はそれと一緒に出てくる作動油を垂れ流しにする必要が
ある。そのため、作動油を無駄にしてしまうとともに、
油圧シリンダの外周部及び床面などを汚してしまう。However, in the above-described conventional air bleeding valve, it is necessary to drain the hydraulic oil that comes with the air bleeding valve in order to completely bleed the air. Therefore, while wasting hydraulic oil,
The outer peripheral portion of the hydraulic cylinder and the floor surface are soiled.
【０００６】そうすると、エア抜きを行う度毎に、作業
者は油受け容器を準備するとともに、油圧シリンダの外
周部及び床面の拭き取り作業を行い、零れた作動油を処
理し、不足した作動油を補給する作業を行わなければな
らず、エア抜き作業に多くの時間を要している。[0006] Then, every time the air is vented, the operator prepares an oil receiving container, wipes the outer peripheral portion of the hydraulic cylinder and the floor surface, processes the spilled hydraulic oil, and runs out of the insufficient hydraulic oil. The work of replenishing the air must be performed, and much time is required for the air bleeding work.
【０００７】本発明は、上述の問題に鑑みてなされたも
ので、作動油などを外部に零すことなく、したがって周
囲を汚すことなく、容易にエア抜きを行うことのできる
液圧機器のエア抜き方法及び装置を提供することを目的
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-mentioned problems. An object is to provide a punching method and apparatus.
【０００８】[0008]
【課題を解決するための手段】請求項１の発明に係る方
法は、液圧機器のエア抜きを行うための方法であって、
液圧機器に用いられる液体と同じ液体が収納されたタン
クと液圧機器のポートとを接続し、前記液体の液面より
も上方において、前記タンクの内部の減圧と加圧とを繰
り返す。According to a first aspect of the present invention, there is provided a method for bleeding hydraulic equipment, comprising the steps of:
A tank containing the same liquid as the liquid used in the hydraulic device is connected to a port of the hydraulic device, and the pressure inside the tank is repeatedly reduced and increased above the liquid level of the liquid.
【０００９】請求項２の発明に係る装置は、液圧機器の
エア抜きを行うための装置であって、液圧機器に用いら
れる液体と同じ液体が収納されるタンクと、前記液体の
液面よりも上方から前記タンク内に圧力を加えるための
加圧手段と、前記液体の液面よりも上方から前記タンク
内に負圧力を加えるための負圧発生手段と、前記加圧手
段の作動と負圧発生手段の作動とを切り換える手段と、
前記タンクの前記液体の液面よりも下方から前記液圧機
器のポートに接続する管路と、を有する。An apparatus according to a second aspect of the present invention is an apparatus for bleeding air of a hydraulic device, comprising a tank for storing the same liquid as the liquid used in the hydraulic device, and a liquid level of the liquid. Pressurizing means for applying pressure into the tank from above, negative pressure generating means for applying negative pressure into the tank from above the liquid level of the liquid, and operation of the pressurizing means. Means for switching the operation of the negative pressure generating means,
And a conduit connected to a port of the hydraulic device from below a liquid level of the liquid in the tank.
【００１０】請求項３の発明に係る装置は、前記液圧機
器のポートに、常時は液圧機器の内部から外部に向かう
液体の流れを遮断するとともに、前記管路をポートに接
続したときに自由流となる逆止弁を設けてなる。According to a third aspect of the present invention, there is provided an apparatus wherein the port of the hydraulic device normally shuts off the flow of the liquid from the inside of the hydraulic device to the outside, and when the pipe is connected to the port. A free-flow check valve is provided.
【００１１】請求項４の発明に係る装置は、前記タンク
に、液体の補給を行うための補給路及び開閉弁が設けら
れており、前記開閉弁を開いた状態で前記タンク内に負
圧力を加えることによって、前記補給路から前記タンク
内に液体が流入するように構成される。In the apparatus according to a fourth aspect of the present invention, the tank is provided with a supply path for supplying liquid and an on-off valve. When the on-off valve is opened, a negative pressure is applied to the tank. With the addition, the liquid is configured to flow into the tank from the supply path.
【００１２】[0012]
【発明の実施の形態】図１は本発明に係るエア抜き装置
１の構成を示す図、図２及び図３は油圧シリンダのエア
抜きポートＰＴＨに設けられた逆止弁の構造及び動作を
示す図である。FIG. 1 is a view showing the structure of an air bleeding device 1 according to the present invention, and FIGS. 2 and 3 show the structure and operation of a check valve provided in an air bleeding port PTH of a hydraulic cylinder. FIG.
【００１３】図１において、エア抜き装置１は、タンク
１１、真空ユニット１２、切替えバルブ１３、圧縮空気
源に接続される供給ポート１４、及び接続ホース１５な
どから構成される。In FIG. 1, the air bleeding device 1 comprises a tank 11, a vacuum unit 12, a switching valve 13, a supply port 14 connected to a compressed air source, a connection hose 15, and the like.
【００１４】タンク１１は、油圧シリンダ３に用いられ
る液体と同じ液体、ここの例では作動油ＨＬを収納す
る。タンク１１は、例えば、透明なアクリル樹脂からな
る筒状の本体の両端面をカバーで閉塞し、各カバーをタ
イロッドで互いに連結した構造である。本体を透明とす
ることで、内部の状態を外部から容易に観察することが
可能である。アクリル樹脂であることから軽量である。
しかし、本体を金属などの不透明な材料によって構成し
てもよい。その場合に、のぞき窓を設けて内部が観察で
きるのが望ましい。The tank 11 stores the same liquid as the liquid used for the hydraulic cylinder 3, in this example, the hydraulic oil HL. The tank 11 has a structure in which both end surfaces of a cylindrical main body made of, for example, a transparent acrylic resin are closed with covers, and the covers are connected to each other with tie rods. By making the main body transparent, the internal state can be easily observed from the outside. Light weight due to acrylic resin.
However, the main body may be made of an opaque material such as a metal. In that case, it is desirable to provide a viewing window so that the inside can be observed.
【００１５】タンク１１には、その上部に、真空圧を接
続するための真空ポートＰＴ１、及び圧縮エアを供給す
るための加圧ポートＰＴ２が設けられ、その下部に、接
続ホース１５を接続するための油ポートＰＴ３が設けら
れる。また、その上部に、作動油ＨＬを補給するための
補給口ＰＴ４が設けられる。The tank 11 is provided at its upper part with a vacuum port PT1 for connecting a vacuum pressure and a pressurization port PT2 for supplying compressed air, and a lower part for connecting a connection hose 15. Oil port PT3 is provided. A replenishing port PT4 for replenishing the hydraulic oil HL is provided at an upper portion thereof.
【００１６】また、タンク１１の底部に、作動油ＨＬを
補給するための補給口ＰＴ５が設けられる。補給口ＰＴ
５には、補給管路２１及び開閉弁２２が設けられてお
り、補給管路２１の先端は補給タンク２３に収納された
作動油ＨＬの中に挿入されている。したがって、開閉弁
２２を開いた状態で、タンク１１内に負圧力を加えるこ
とによって、補給管路２１からタンク１１内に作動油Ｈ
Ｌが流入する。これによって、タンク１１に作動油ＨＬ
が半自動的に補給されるので、大量の作動油ＨＬを補給
する必要がある場合に便利である。なお、接続ホース１
５の途中にも開閉弁を設けておくと便利がよい。A supply port PT5 for supplying hydraulic oil HL is provided at the bottom of the tank 11. Supply port PT
5 is provided with a supply line 21 and an open / close valve 22, and the tip of the supply line 21 is inserted into the hydraulic oil HL stored in the supply tank 23. Therefore, by applying a negative pressure to the tank 11 with the on-off valve 22 opened, the hydraulic oil H is supplied from the supply line 21 into the tank 11.
L flows in. Thereby, the hydraulic fluid HL is stored in the tank 11.
Is automatically replenished, which is convenient when a large amount of hydraulic oil HL needs to be replenished. In addition, connection hose 1
It is convenient to provide an on-off valve in the middle of 5.
【００１７】なお、開閉弁及び切替えバルブ１３として
電磁弁を用い、タンク１１内の作動油ＨＬの量を検出す
るセンサを設けておき、作動油ＨＬの量が所定量よりも
減った場合に、それらの電磁弁を制御することによって
自動的に作動油ＨＬの補給を行うようにしてもよい。An electromagnetic valve is used as the opening / closing valve and the switching valve 13, and a sensor for detecting the amount of the hydraulic oil HL in the tank 11 is provided, and when the amount of the hydraulic oil HL becomes smaller than a predetermined amount, The supply of the hydraulic oil HL may be automatically performed by controlling these solenoid valves.
【００１８】真空ポートＰＴ１、加圧ポートＰＴ２、及
び補給口ＰＴ４は、作動油ＨＬの液面よりも常に上方に
あり、油ポートＰＴ３及び補給口ＰＴ５は作動油ＨＬの
液面よりも常に下方にある。The vacuum port PT1, the pressure port PT2, and the supply port PT4 are always above the level of the hydraulic oil HL, and the oil port PT3 and the supply port PT5 are always below the level of the hydraulic oil HL. is there.
【００１９】真空ユニット１２は、フィルタ４１、エジ
ェクタバルブ４２、及びマフラ４３からなる。圧縮エア
が供給された場合には、フィルタ４１によって異物が除
去され、エジェクタバルブ４２の内部を圧縮エアが流れ
る。これによってエジェクタバルブ４２に真空圧が発生
する。発生した真空圧は真空ポートＰＴ１に供給され、
タンク１１の内部を減圧させる。The vacuum unit 12 includes a filter 41, an ejector valve 42, and a muffler 43. When the compressed air is supplied, foreign matter is removed by the filter 41, and the compressed air flows inside the ejector valve 42. As a result, a vacuum pressure is generated in the ejector valve 42. The generated vacuum pressure is supplied to the vacuum port PT1,
The pressure inside the tank 11 is reduced.
【００２０】切替えバルブ１３は、オペレータの操作に
より機械的に動作する。つまり、オペレータの操作によ
って、供給ポート１４に供給された圧縮エアを、真空ユ
ニット１２の側と加圧ポートＰＴ２の側とに切り替え
る。圧縮エアが加圧ポートＰＴ２に接続されると、タン
ク１１の内部を加圧する。The switching valve 13 is operated mechanically by the operation of the operator. That is, the compressed air supplied to the supply port 14 is switched between the vacuum unit 12 side and the pressurization port PT2 side by the operation of the operator. When the compressed air is connected to the pressure port PT2, the inside of the tank 11 is pressurized.
【００２１】供給ポート１４には、外部の圧縮空気源か
ら圧縮エアが供給される。接続ホース１５は、連結部１
６を介して油圧シリンダ３のエア抜きポートＰＴＨに接
続される。The supply port 14 is supplied with compressed air from an external compressed air source. The connecting hose 15 is connected to the connecting portion 1.
6 is connected to the air release port PTH of the hydraulic cylinder 3.
【００２２】図２及び図３に示すように、油圧シリンダ
３のカバー４１には、ネジ穴４２、及び弁穴４３が設け
られており、弁穴４３は、流路４４によって、図示しな
いシリンダ室に連通している。As shown in FIGS. 2 and 3, a screw hole 42 and a valve hole 43 are provided in a cover 41 of the hydraulic cylinder 3. Is in communication with
【００２３】ネジ穴４２には、弁座４５がネジ込まれて
いる。弁座４５には、弁穴４３内に装着された弁体４６
が圧縮バネ４７によって付勢されて当接し、これによ
り、常時において弁穴４３を外部から密封している。エ
ア抜きを行わないときには、図２に示すように、弁座４
５に設けられたネジ穴４５ａに、キャップ４８がネジ込
まれて塞がれている。A valve seat 45 is screwed into the screw hole 42. The valve seat 45 has a valve body 46 mounted in the valve hole 43.
Are urged by the compression spring 47 to abut, thereby always sealing the valve hole 43 from the outside. When the air is not vented, as shown in FIG.
A cap 48 is screwed into a screw hole 45 a provided in the cover 5 and closed.
【００２４】エア抜きを行うときには、図３に示すよう
に、キャップ４８を取り外し、その代わりに、ネジ穴４
５ａに連結部１６を連結する。すなわち、連結部１６
は、ネジ部材５１、押し部材５２、及びブシュ部材５３
などからなっている。ネジ部材５１はネジ穴４５ａにネ
ジ込まれる。押し部材５２は、ネジ部材５１の中央部の
ネジ穴にネジ込まれており、且つその下端部がネジ部材
５１の下端面よりも下方に突出しており、下端部によっ
て弁体４６を押して流路を開放する。押し部材５２に
は、その上端から下端に至るまで貫通穴が設けられてお
り、弁体４６が開放されることによって、接続ホース１
５と弁穴４３及び流路４４とが連通する。ブシュ部材５
３は接続ホース１５を押し部材５２に固定するためのも
のである。When bleeding air, the cap 48 is removed as shown in FIG.
The connecting portion 16 is connected to 5a. That is, the connecting portion 16
Are a screw member 51, a pushing member 52, and a bush member 53.
And so on. The screw member 51 is screwed into the screw hole 45a. The push member 52 is screwed into a screw hole at the center of the screw member 51, and the lower end of the push member 52 projects below the lower end surface of the screw member 51. To release. The push member 52 is provided with a through hole from the upper end to the lower end thereof.
5 communicates with the valve hole 43 and the flow path 44. Bushing member 5
3 is for fixing the connection hose 15 to the pushing member 52.
【００２５】次に、エア抜き装置１の動作について説明
する。図４はタンク１１の内部の加圧と減圧とを繰り返
して行う様子を示すタイミング図である。Next, the operation of the air release device 1 will be described. FIG. 4 is a timing chart showing how the pressurization and depressurization inside the tank 11 are repeatedly performed.
【００２６】図４に示すように、タンク１１の内部を、
一定の時間Ｔ１において減圧し、その後に一定の時間Ｔ
２において加圧し、これを繰り返す。時間Ｔ１は、例え
ば１〜５秒程度であり、時間Ｔ２は、例えば０．５〜３
秒程度である。これらの時間は、繰り返す度毎に変更し
てもよい。繰り返しの回数は、１〜１０回、例えば３回
程度である。As shown in FIG. 4, the inside of the tank 11 is
The pressure is reduced at a certain time T1, and thereafter, a certain time T
Press at 2 and repeat this. The time T1 is, for example, about 1 to 5 seconds, and the time T2 is, for example, 0.5 to 3 seconds.
On the order of seconds. These times may be changed for each repetition. The number of repetitions is 1 to 10 times, for example, about 3 times.
【００２７】タンク１１内が減圧されると、油圧シリン
ダ３のシリンダ室内も減圧され、これによってシリンダ
室内などに存在するエアの気泡が大きくなって上の方に
上がってくる。その結果、作動油ＨＬの液面から気泡が
出てくる。次に、タンク１１内が加圧されると、タンク
１１内の作動油ＨＬが油圧シリンダ３のシリンダ室に圧
送される。これを繰り返すことによってエア抜きが行わ
れる。作動油ＨＬの液面から気泡が出てこなくなれば、
又は気泡の出る状態が落ちつけば、エア抜きは完了であ
る。When the pressure in the tank 11 is reduced, the pressure in the cylinder chamber of the hydraulic cylinder 3 is also reduced, whereby air bubbles existing in the cylinder chamber and the like become larger and rise upward. As a result, bubbles come out from the liquid surface of the hydraulic oil HL. Next, when the inside of the tank 11 is pressurized, the hydraulic oil HL in the tank 11 is sent to the cylinder chamber of the hydraulic cylinder 3 by pressure. By repeating this, air bleeding is performed. If air bubbles do not come out from the liquid level of the hydraulic oil HL,
Or, when the state in which the bubbles come out has calmed down, the air bleeding is completed.
【００２８】このように、エア抜き装置１によれば、接
続ホース１５を油圧シリンダ３のエア抜きポートＰＴＨ
に接続し、加圧と減圧とを繰り返すことによって、従来
のように作動油を垂れ流しにすることなく容易にエア抜
きを行うことができる。エア抜きポートＰＴＨからは作
動油が零れないので、周囲を汚すことがない。As described above, according to the air release device 1, the connection hose 15 is connected to the air release port PTH of the hydraulic cylinder 3.
By repeating the pressurization and the depressurization, air can be easily removed without draining the hydraulic oil as in the conventional case. The hydraulic oil does not spill from the air vent port PTH, so that the surroundings are not polluted.
【００２９】上に述べた実施形態においては、オペレー
タが切替えバルブ１３を操作することによって加圧と減
圧とを切り替えたが、タイマーなどを用いて適当な時間
毎に自動的に切り替わるように制御してもよい。その場
合に、時間Ｔ１，２及び繰り返し回数を設定可能として
おけばよい。In the above-described embodiment, the operator operates the switching valve 13 to switch between pressurization and depressurization. However, a timer or the like is used to perform control so that the pressure is automatically switched at appropriate time intervals. You may. In this case, the times T1 and T2 and the number of repetitions may be settable.
【００３０】また、上に述べた実施形態においては、接
続ホース１５をエア抜きポートＰＴＨに接続したが、油
圧シリンダ３の作動のための通常のポートに接続しても
よい。その場合に、それぞれのポートに合う分岐配管材
などを使用すればよい。また、油圧シリンダの回路中の
配管材にティーなどの分岐配管材を設け、そこに接続ホ
ース１５を接続して油圧シリンダ及び配管中のエア抜き
を行うようにしてもよい。In the above embodiment, the connection hose 15 is connected to the air vent port PTH. However, the connection hose 15 may be connected to a normal port for operating the hydraulic cylinder 3. In that case, a branch pipe material or the like that matches each port may be used. Alternatively, a branch pipe member such as a tee may be provided in a pipe member in the circuit of the hydraulic cylinder, and a connection hose 15 may be connected thereto to release air from the hydraulic cylinder and the pipe.
【００３１】上に述べた実施形態において、真空ユニッ
ト１２に代えて、電動モータを用いた真空圧発生装置を
用いてもよい。切替えバルブ１３として、３ポジション
のものを用いてもよい。圧縮エアを発生するためのコン
プレッサをエア抜き装置１の内部に設置してもよい。そ
の他、タンク１１、エア抜き装置１の全体又は各部の構
造、形状、寸法、材質、個数などは、本発明の趣旨に沿
って適宜変更することができる。In the embodiment described above, a vacuum pressure generator using an electric motor may be used instead of the vacuum unit 12. The switching valve 13 may be of a three-position type. A compressor for generating compressed air may be installed inside the air bleeding device 1. In addition, the structure, shape, dimensions, material, number, etc. of the tank 11 and the whole or each part of the air venting device 1 can be appropriately changed in accordance with the gist of the present invention.
【００３２】[0032]
【発明の効果】本発明によると、作動油などを外部に零
すことなく、したがって周囲を汚すことなく、容易にエ
ア抜きを行うことができる。According to the present invention, air bleeding can be easily performed without spilling hydraulic oil or the like to the outside, and thus without polluting the surroundings.
【００３３】請求項４の発明によると、タンクへの液体
の補給を容易に行うことができる。According to the fourth aspect of the present invention, it is possible to easily supply the liquid to the tank.
【図１】本発明に係るエア抜き装置の構成を示す図であ
る。FIG. 1 is a diagram showing a configuration of an air vent device according to the present invention.
【図２】油圧シリンダのポートに設けられた逆止弁の構
造及び動作を示す図である。FIG. 2 is a view showing the structure and operation of a check valve provided in a port of a hydraulic cylinder.
【図３】油圧シリンダのポートに設けられた逆止弁の構
造及び動作を示す図である。FIG. 3 is a view showing the structure and operation of a check valve provided in a port of a hydraulic cylinder.
【図４】加圧と減圧とを繰り返して行う様子を示すタイ
ミング図である。FIG. 4 is a timing chart showing a state in which pressurization and depressurization are repeatedly performed.
１ エア抜き装置 ３ 油圧シリンダ（液圧機器） １１ タンク １２ 真空ユニット（負圧発生手段） １４ 供給ポート（加圧手段） １５ 接続ホース（管路） ２１ 補給管路（補給路） ２２ 開閉弁 ４５ 弁座（逆止弁） ４６ 弁体（逆止弁） ＨＬ 作動油（液体） ＰＴＨ エア抜きポート（ポート） DESCRIPTION OF SYMBOLS 1 Air release device 3 Hydraulic cylinder (hydraulic equipment) 11 Tank 12 Vacuum unit (negative pressure generating means) 14 Supply port (pressurizing means) 15 Connection hose (pipe line) 21 Supply pipe (supply path) 22 On-off valve 45 Valve seat (check valve) 46 Valve body (check valve) HL Hydraulic oil (liquid) PTH Air release port (port)
Claims (4)
って、 液圧機器に用いられる液体と同じ液体が収納されたタン
クと液圧機器のポートとを接続し、 前記液体の液面よりも上方において、前記タンクの内部
の減圧と加圧とを繰り返す、 ことを特徴とする液圧機器のエア抜き方法。1. A method for bleeding hydraulic equipment, comprising: connecting a tank containing the same liquid as the liquid used in the hydraulic equipment to a port of the hydraulic equipment; A method for bleeding air from a hydraulic device, comprising: repeating depressurization and pressurization of the inside of the tank above a surface.
って、 液圧機器に用いられる液体と同じ液体が収納されるタン
クと、 前記液体の液面よりも上方から前記タンク内に圧力を加
えるための加圧手段と、 前記液体の液面よりも上方から前記タンク内に負圧力を
加えるための負圧発生手段と、 前記加圧手段の作動と負圧発生手段の作動とを切り換え
る手段と、 前記タンクの前記液体の液面よりも下方から前記液圧機
器のポートに接続する管路と、 を有することを特徴とする液圧機器のエア抜き装置。2. An apparatus for bleeding air from a hydraulic device, comprising: a tank for storing the same liquid as a liquid used in the hydraulic device; and a tank inside the tank from above a liquid level of the liquid. Pressurizing means for applying pressure, negative pressure generating means for applying a negative pressure into the tank from above the liquid level of the liquid, and operation of the pressurizing means and operation of the negative pressure generating means. An air bleeding device for a hydraulic device, comprising: a switching unit; and a pipeline connected to a port of the hydraulic device from below a liquid level of the liquid in the tank.
の内部から外部に向かう液体の流れを遮断するととも
に、前記管路をポートに接続したときに自由流となる逆
止弁を設けてなる、 請求項２記載の液圧機器のエア抜き装置。3. A check valve which normally shuts off the flow of liquid from the inside of the hydraulic equipment to the outside and connects to the port of the hydraulic equipment, and has a free flow when the pipeline is connected to the port. The air bleeding device for a hydraulic device according to claim 2, which is provided.
給路及び開閉弁が設けられており、前記開閉弁を開いた
状態で前記タンク内に負圧力を加えることによって、前
記補給路から前記タンク内に液体が流入するように構成
されている、 請求項２又は３記載の液圧機器のエア抜き装置。4. A supply path and an on-off valve for replenishing liquid are provided in the tank, and a negative pressure is applied to the tank in a state where the on-off valve is opened, so that the supply path is switched from the supply path. The air bleeding device of a hydraulic device according to claim 2, wherein the device is configured so that a liquid flows into the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20558599A JP3559729B2 (en) | 1999-07-21 | 1999-07-21 | Method and apparatus for bleeding air from hydraulic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20558599A JP3559729B2 (en) | 1999-07-21 | 1999-07-21 | Method and apparatus for bleeding air from hydraulic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001032805A true JP2001032805A (en) | 2001-02-06 |
| JP3559729B2 JP3559729B2 (en) | 2004-09-02 |
Family
ID=16509328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20558599A Expired - Fee Related JP3559729B2 (en) | 1999-07-21 | 1999-07-21 | Method and apparatus for bleeding air from hydraulic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3559729B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2517459A (en) * | 2013-08-21 | 2015-02-25 | Airbus Uk Ltd | A hydraulic actuator arrangement |
-
1999
- 1999-07-21 JP JP20558599A patent/JP3559729B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2517459A (en) * | 2013-08-21 | 2015-02-25 | Airbus Uk Ltd | A hydraulic actuator arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3559729B2 (en) | 2004-09-02 |
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