JP4661353B2 - Hydraulic device - Google Patents

Hydraulic device Download PDF

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JP4661353B2
JP4661353B2 JP2005147606A JP2005147606A JP4661353B2 JP 4661353 B2 JP4661353 B2 JP 4661353B2 JP 2005147606 A JP2005147606 A JP 2005147606A JP 2005147606 A JP2005147606 A JP 2005147606A JP 4661353 B2 JP4661353 B2 JP 4661353B2
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hydraulic
valve block
tank
hydraulic pump
pipe
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JP2006322417A (en
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宏幸 西田
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Shimadzu Corp
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Shimadzu Corp
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Priority to JP2005147606A priority Critical patent/JP4661353B2/en
Priority to CN200810185750.5A priority patent/CN101435444B/en
Priority to CNB2006100745452A priority patent/CN100543298C/en
Publication of JP2006322417A publication Critical patent/JP2006322417A/en
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本発明は、例えば液圧システムの液圧源等に好適に使用される液圧装置に関する。   The present invention relates to a hydraulic apparatus suitably used for a hydraulic pressure source of a hydraulic system, for example.

従来、液圧システムの液圧源等に好適に使用される液圧装置は、図７で示すように、内部構成部品として、電動モータ５１や液圧ポンプ６０は、泥よけや騒音防止のためタンク５２とカバー５６で覆われるよう配置されていた。また、電動モータ５１や液圧ポンプ６０の近傍に配置されるバルブブロック５３も一緒に内部構成部品として配置されていた。   Conventionally, as shown in FIG. 7, a hydraulic device suitably used for a hydraulic pressure source of a hydraulic system, etc., as an internal component, an electric motor 51 and a hydraulic pump 60 are used to prevent mudguards and noise. For this reason, they are arranged so as to be covered with the tank 52 and the cover 56. Further, the valve block 53 disposed in the vicinity of the electric motor 51 and the hydraulic pump 60 is also disposed as an internal component.

しかし、バルブブロック５３を内部構成部品として配置した場合、内部構成部品が大型化し、それを覆うカバー５６やタンク５２等も大型化し、装置全体の大型化と重量化を伴う。また、ユーザニーズに応じて、バルブブロックの一部機能を交換する必要がある。   However, when the valve block 53 is arranged as an internal component, the internal component becomes large, and the cover 56, the tank 52, and the like that cover it become large, which increases the size and weight of the entire apparatus. Moreover, it is necessary to exchange some functions of the valve block according to user needs.

そこで、装置の小型化やバルブブロック交換の簡便化のため、図８や図９に示すように、必ずしも電動モータ５１や液圧ポンプ６０の近傍に配置する必要が無いバルブブロック５３の一部機能や全体を、タンク５２側方にブロックバルブ５４として配置する構成が採用されている。
特開２００１−４１１６９号公報 Therefore, in order to reduce the size of the apparatus and simplify the exchange of the valve block, as shown in FIGS. 8 and 9, some functions of the valve block 53 that do not necessarily need to be arranged near the electric motor 51 or the hydraulic pump 60. Alternatively, a configuration is adopted in which the whole is arranged as a block valve 54 on the side of the tank 52.
JP 2001-41169 A

しかしながら、内部構成部品とタンク５２側方のバブルブロック５４とを接続する配管５５の一部はカバー５６やタンク５２で覆うことができず、装置の外部に露出するので、配管５５が損傷したり、配管５５が占める余分なスペースが必要となり、車載時の問題点となっていた。   However, a part of the pipe 55 that connects the internal components and the bubble block 54 on the side of the tank 52 cannot be covered with the cover 56 or the tank 52 and is exposed to the outside of the apparatus. The extra space occupied by the pipe 55 is required, which is a problem when mounted on a vehicle.

本発明は上記課題を解決することのできる液圧装置を提供することを目的とする。   An object of this invention is to provide the hydraulic apparatus which can solve the said subject.

上記課題を解決するため、本発明は、液圧ポンプに供給する作動油を収容するタンクと、前記タンクの一側方に配置され、少なくとも電動モータとこの電動モータにより駆動される前記液圧ポンプとからなる構成部品と共に、前記タンクの別の側方には、作動液が配管を介して前記液圧ポンプから送り込まれるバルブブロックが前記タンクに連設され、該バルブブロックから作動液が装置外部の負荷に供給される液圧装置において、前記配管は前記タンクを貫通して設けられたことを特徴とする。 In order to solve the above-described problems, the present invention provides a tank that contains hydraulic oil to be supplied to a hydraulic pump, and is disposed on one side of the tank and is driven by at least an electric motor and the electric motor. And a valve block for supplying hydraulic fluid from the hydraulic pump through a pipe to the side of the tank, and the hydraulic fluid from the valve block to the outside of the apparatus. In the hydraulic device supplied to the load, the pipe is provided through the tank.

また、上記構成において、前記構成部品に内部バルブブロックを有し、内部バルブブロックに前記液圧ポンプから作動液を送り込むとともに、内部バルブブロックから前記配管を介して前記タンクの別の側方のバルブブロックに作動液が送り込まれるよう構成したことも本発明に含まれる。なお、内部バルブブロックは、バルブブロックに対して、液圧ポンプからの作動液の流れの上流側、即ち、装置の中心側に配置されているので、「内部」という表現で区別されたものである。 In the above structure, has an internal valve block to said component, with feed the hydraulic fluid from the hydraulic pump inside the valve block, from within the valve block of another side of the tank through the pipe valve It is also included in the present invention that the hydraulic fluid is sent to the block. The internal valve block is arranged upstream of the flow of hydraulic fluid from the hydraulic pump, that is, on the center side of the device, and is therefore distinguished by the expression “internal”. is there.

本発明では、バルブブロックの少なくとも一部を内部構成部品の外部に出すことができるので、内部構成部品を覆うタンクやカバーを不要に大きくする必要がなく、装置の小型化や軽量化、またコストダウンを図ることができ、しかも、配管が露出しないので、配管の損傷することがなくなり、また、余分なスペースを要しないので、車載時に好適な液圧装置を提供できる。   In the present invention, since at least a part of the valve block can be taken out of the internal components, there is no need to unnecessarily enlarge the tank or cover that covers the internal components, and the device can be reduced in size, weight, and cost Since the piping can be prevented from being exposed, the piping is not damaged, and an extra space is not required, so that a hydraulic device suitable for in-vehicle use can be provided.

以下に、本発明の第１実施形態について図１〜４を用いて述べる。図１の液圧装置は、バルブブロックが内部バルブブロック１３と外部バルブブロック１４に分割され、それぞれタンク１２の側方に配置される。この種の液圧装置は、例えば、図４に示したとおり、２つのシリンダＡ、Ｂに圧油を供給する液圧源として使用され、電動モータ１１によって駆動される１つの液圧ポンプ２０によってタンク１２から吸い込まれた作動油を、リリーフ弁３８や切換弁３５などを有した内部バルブブロック１３を介して、さらに、２つのシリンダＡ、Ｂへ作動油の供給、排出を切り換える切換弁３４、３６、３７を有した外部バルブブロック１４を介して、シリンダＡ、Ｂに接続される。これら内部バルブブロック１３と外部バルブブロック１４とは配管１５によって接続される。なお、フロートコントロールバルブ３９、絞り４０はスピード調整のために設けられ、また、リリーフ弁３８は、回路が所定圧以上になると作動液をタンク１２に戻すために設けられるものである。   Below, 1st Embodiment of this invention is described using FIGS. 1-4. 1, the valve block is divided into an internal valve block 13 and an external valve block 14, which are arranged on the sides of the tank 12, respectively. For example, as shown in FIG. 4, this type of hydraulic device is used as a hydraulic pressure source that supplies pressure oil to two cylinders A and B, and is driven by a single hydraulic pump 20 that is driven by an electric motor 11. A switching valve 34 for switching the supply and discharge of the hydraulic oil to and from the two cylinders A and B through the internal valve block 13 having a relief valve 38, a switching valve 35 and the like. The cylinders A and B are connected through an external valve block 14 having 36 and 37. The internal valve block 13 and the external valve block 14 are connected by a pipe 15. The float control valve 39 and the throttle 40 are provided for speed adjustment, and the relief valve 38 is provided for returning the working fluid to the tank 12 when the circuit becomes a predetermined pressure or higher.

そして、内部バルブブロック１３は、電動モータ１１や液圧ポンプ２０と共に内部構成部品として、タンク１２とカバー１６、１６−１、１６−２で囲まれる。また、外部バルブブロック１４はタンク１２に固定される。そして、内部バルブブロック１３と外部バルブブロック１４を接続する配管１５は、図２及び図３で示したとおり、タンク１２の内部に配設され、その両端側でそれぞれ両バルブブロック１３、１４と連結されるが、タンク１２と両バルブブロック１３、１４とはホース等の配管で連結されてもよい。また、図３に示したとおり、外部バルブブロック１４はプレート１７とカバー１８に囲まれてタンク１２に固定されてもよく、プレート１７にも配管が形成されている。   The internal valve block 13 is surrounded by the tank 12 and covers 16, 16-1, 16-2 as internal components together with the electric motor 11 and the hydraulic pump 20. The external valve block 14 is fixed to the tank 12. The pipe 15 that connects the internal valve block 13 and the external valve block 14 is disposed inside the tank 12 as shown in FIGS. 2 and 3, and is connected to both valve blocks 13 and 14 at both ends thereof. However, the tank 12 and both the valve blocks 13 and 14 may be connected by piping such as a hose. Further, as shown in FIG. 3, the external valve block 14 may be fixed to the tank 12 surrounded by the plate 17 and the cover 18, and a pipe is also formed on the plate 17.

このようなタンク１２の製作方法として、ダイキャストにより配管１５を有したタンクベース１２とタンクフタとをそれぞれ別々に製造した後、ボルト等で固定してタンク１２を構成する。また、作動液用の配管１５と共に、配線用の配線穴１９を同様に設けることもでき、内部バルブブロック１３の切換弁や電動モータを駆動する電気信号用の配線を通すことができる。なお、配管１５及び配線穴１９はともに、タンクベース１２Ａ側とタンクフタ１２Ｂ側の接合面にＯリング等のシール材が設けられており、作動油の混入が防止される。   As a method for manufacturing such a tank 12, a tank base 12 having a pipe 15 and a tank lid are separately manufactured by die casting, and then fixed by bolts or the like to constitute the tank 12. Moreover, the wiring hole 19 for wiring can be similarly provided with the piping 15 for hydraulic fluid, and the wiring for the electric signal which drives the switching valve of the internal valve block 13 and an electric motor can be passed. In addition, both the piping 15 and the wiring hole 19 are provided with a sealing material such as an O-ring on the joint surface between the tank base 12A side and the tank lid 12B side, so that mixing of hydraulic oil is prevented.

次に、上記した液圧装置を駆動する際、コンタクタ３１を作動させると電動モータ１１が回転し電動モータ１１と回転軸が連結されている液圧ポンプ２０が回転する。液圧ポンプ２０はタンク１２から液を吸い込み、内部バルブブロック１３及び外部バルブブロック１４へ液を供給する。液圧ポンプ２０の回転と同時に切換弁３４を切り換えると外部バルブブロック１４のＡポートへ圧液が送られ、ホースで繋がったシリンダＡが伸びる。次に、液圧ポンプ２０の回転と同時に切換弁３６を切り換えると外部バルブブロック１４のＢ、Ｃポートへ圧液が送られ、圧力差の関係でホースの繋がったシリンダＢが伸びる。   Next, when the above-described hydraulic device is driven, when the contactor 31 is operated, the electric motor 11 rotates and the hydraulic pump 20 connected to the electric motor 11 and the rotation shaft rotates. The hydraulic pump 20 sucks liquid from the tank 12 and supplies the liquid to the internal valve block 13 and the external valve block 14. When the switching valve 34 is switched simultaneously with the rotation of the hydraulic pump 20, the hydraulic fluid is sent to the A port of the external valve block 14, and the cylinder A connected by the hose extends. Next, when the switching valve 36 is switched simultaneously with the rotation of the hydraulic pump 20, the pressurized liquid is sent to the B and C ports of the external valve block 14, and the cylinder B connected to the hose extends due to the pressure difference.

また、液圧ポンプ２０の回転と同時に切換弁３７を切り換えると、Ｂポートへ作動液が送られ、ホースで繋がったシリンダＢが縮む。また、切換弁３５を切り換えると、自重でシリンダＡが縮み、Ａポートから作動液がフロートコントロールバルブ３９を介してタンク１２に戻る。   When the switching valve 37 is switched simultaneously with the rotation of the hydraulic pump 20, hydraulic fluid is sent to the B port, and the cylinder B connected by the hose is contracted. When the switching valve 35 is switched, the cylinder A contracts by its own weight, and the working fluid returns from the A port to the tank 12 via the float control valve 39.

なお、上記実施例では、図３に示したとおり、タンクベース１２Ａ側の配管１５Ａとタンクフタ１２Ｂ側の配管１５Ｂとはそれぞれの端面でＯリングを介して接合したが、図５に示したとおり、別途、接続用の配管１５Ｃを使用して配管１５Ａ、１５Ｂどうしを連結してもよい。   In the above embodiment, as shown in FIG. 3, the pipe 15 </ b> A on the tank base 12 </ b> A side and the pipe 15 </ b> B on the tank lid 12 </ b> B side are joined to each other through an O-ring, but as shown in FIG. 5, Separately, the pipes 15 </ b> A and 15 </ b> B may be coupled using a pipe 15 </ b> C for connection.

さらに、図６に示したような変形実施例についても本発明に含まれ、内部バルブブロック１３を外部バルブブロック１４と一体化し、１つのバルブブロックとした点に特徴を有する。このような構成であっても、液圧ポンプ２０とバルブブロックとを連結する配管は、図２、図３、及び図５に示したものと同様、タンク１２内部に設けることで、装置の小型化や軽量化、またコストダウンを図ることができ、しかも、配管が露出しないので、配管の損傷することがなくなり、また、余分なスペースを要しないので、車載時に好適な液圧装置を提供できるという格別な効果を得ることができる。   Further, a modified embodiment as shown in FIG. 6 is also included in the present invention, and is characterized in that the internal valve block 13 is integrated with the external valve block 14 to form one valve block. Even in such a configuration, the piping connecting the hydraulic pump 20 and the valve block is provided inside the tank 12 in the same manner as those shown in FIGS. 2, 3, and 5, thereby reducing the size of the apparatus. Can be reduced in weight and weight, and the piping is not exposed, so that the piping is not damaged and no extra space is required, so that a hydraulic device suitable for in-vehicle use can be provided. A special effect can be obtained.

本発明の実施例に係る液圧装置を示す図The figure which shows the hydraulic apparatus which concerns on the Example of this invention 図１の液圧装置の側面断面図（１）1 is a side sectional view of the hydraulic device in FIG. 図１の液圧装置の側面断面図（２）Side surface sectional view (2) of the hydraulic device of FIG. 本発明の実施例に係る液圧装置のブロック図1 is a block diagram of a hydraulic apparatus according to an embodiment of the present invention. 本発明のタンク内部の配管の変形実施例の側面断面図Side sectional view of a modified embodiment of the piping inside the tank of the present invention 本発明の変形実施例係る液圧装置を示す図The figure which shows the hydraulic apparatus which concerns on the modified example of this invention 従来の液圧装置を示す図（１）Fig. 1 shows a conventional hydraulic device (1) 従来の液圧装置を示す図（２）Diagram showing a conventional hydraulic device (2) 従来の液圧装置を示す図（３）Fig. 3 shows a conventional hydraulic device.

符号の説明Explanation of symbols

１１ 電動モータ
１２ タンク
１３ 内部バルブブロック
１４ 外部バルブブロック
１５ 配管
２０ 液圧ポンプ
Ａ、Ｂ シリンダ 11 Electric motor 12 Tank 13 Internal valve block 14 External valve block 15 Piping 20 Hydraulic pump A, B Cylinder

Claims (2)

液圧ポンプに供給する作動油を収容するタンクと、前記タンクの一側方に配置され、少なくとも電動モータとこの電動モータにより駆動される前記液圧ポンプとからなる構成部品と共に、前記タンクの別の側方には、作動液が配管を介して前記液圧ポンプから送り込まれるバルブブロックが前記タンクに連設され、該バルブブロックから作動液が装置外部の負荷に供給される液圧装置において、前記配管は前記タンクを貫通して設けられたことを特徴とする液圧装置。 A tank for storing hydraulic oil to be supplied to the hydraulic pump, and a component that is disposed on one side of the tank and includes at least an electric motor and the hydraulic pump driven by the electric motor. On the side of the hydraulic device, a valve block in which hydraulic fluid is sent from the hydraulic pump via a pipe is connected to the tank, and hydraulic fluid is supplied from the valve block to a load outside the device. The hydraulic apparatus characterized in that the pipe is provided through the tank. 前記構成部品に内部バルブブロックを有し、内部バルブブロックに前記液圧ポンプから作動液を送り込むとともに、内部バルブブロックから前記配管を介して前記タンクの別の側方のバルブブロックに作動液が送り込まれることを特徴とする請求項１に記載された液圧装置。 It has an internal valve block to said component, with feed the hydraulic fluid from the hydraulic pump inside the valve block, hydraulic fluid to the valve block of another side of the tank from within the valve block through the piping fed The hydraulic apparatus according to claim 1, wherein
JP2005147606A 2005-05-20 2005-05-20 Hydraulic device Active JP4661353B2 (en)

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JP2005147606A JP4661353B2 (en) 2005-05-20 2005-05-20 Hydraulic device
CN200810185750.5A CN101435444B (en) 2005-05-20 2006-04-27 Hydraulic device
CNB2006100745452A CN100543298C (en) 2005-05-20 2006-04-27 Hydraulic pressure installation

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JP4661353B2 true JP4661353B2 (en) 2011-03-30

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JP5311905B2 (en) * 2008-07-14 2013-10-09 極東開発工業株式会社 A power unit and a load receiving platform lifting device for a cargo handling vehicle including the power unit.
CN104564860A (en) * 2013-10-23 2015-04-29 无锡吊蓝机械制造有限公司 Integrated single hydraulic source

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JP2001227501A (en) * 2000-02-15 2001-08-24 Taiyo Ltd Hydraulic supply device

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CN2050035U (en) * 1988-02-11 1989-12-27 张家荣 Automatic hydraulic oil-selling unit
TW382044B (en) * 1996-09-02 2000-02-11 Atlas Copco Airpower Nv Screw-type compressor
CN2321713Y (en) * 1997-12-26 1999-06-02 浙江省邮电机械厂 Low-temp. increasing oil source device for hydraulic bundling machine
CN2495743Y (en) * 2001-09-13 2002-06-19 沈洪和 Steel bar joining machine with pressing means
CN100364879C (en) * 2004-03-01 2008-01-30 上海市闸北区物流工程技术研究所 Energy-saving electrocar for loading unloading and transporting
CN2771538Y (en) * 2005-02-28 2006-04-12 夏连根 Built-in oil-immersible integrated hydraulic power unit

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JP2001227501A (en) * 2000-02-15 2001-08-24 Taiyo Ltd Hydraulic supply device

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CN101435444A (en) 2009-05-20
CN100543298C (en) 2009-09-23
CN101435444B (en) 2015-05-27
CN1865699A (en) 2006-11-22
JP2006322417A (en) 2006-11-30

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