JPH0842501A - Hydraulic power unit - Google Patents
Hydraulic power unitInfo
- Publication number
- JPH0842501A JPH0842501A JP18146394A JP18146394A JPH0842501A JP H0842501 A JPH0842501 A JP H0842501A JP 18146394 A JP18146394 A JP 18146394A JP 18146394 A JP18146394 A JP 18146394A JP H0842501 A JPH0842501 A JP H0842501A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- oil
- power unit
- suction pipe
- case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Types And Forms Of Lifts (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、油タンクと、油タンク
と結合される油圧回路との間の封油作業を好適に行う油
圧パワーユニットに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic power unit that suitably performs oil sealing work between an oil tank and a hydraulic circuit connected to the oil tank.
【0002】[0002]
【従来の技術】一般に油圧パワーユニットは電動機で駆
動される作動油ポンプ、制御バルブなどの機器を配置
し、これら機器の上部近傍に油タンクを備えて構成され
ている。そして、油タンクの底部には前記機器につなが
る吸込管および戻り管が連結されて内部に開口し、前記
吸込管の開口にストレーナを備えている。上記構成の油
圧パワーユニットにおいて、いま機器を分解して保守点
検しようとする場合、油タンク内の作動油を一旦別の器
に排出するか、また油タンク内に手を入れてストレーナ
を取外し、キャップで吸込管および戻り管の開口を塞い
でから分解していた。このほか、吸込管の開口部にスト
レーナをも覆う特殊な部屋を形成し、この部屋の油タン
ク内へ通じる開口を開閉させることにより、作動油の吸
込管への流れを阻止あるいは阻止解除するものとして、
実開昭52−157513号公報があげられる。2. Description of the Related Art Generally, a hydraulic power unit is configured by arranging equipment such as a hydraulic oil pump driven by an electric motor and a control valve, and an oil tank near the upper part of these equipment. A suction pipe and a return pipe connected to the device are connected to the bottom of the oil tank to open inside, and a strainer is provided at the opening of the suction pipe. For the hydraulic power unit with the above configuration, when disassembling the equipment for maintenance and inspection, either drain the hydraulic oil from the oil tank to another container, or put your hand in the oil tank and remove the strainer to remove the cap. It was disassembled after closing the openings of the suction pipe and the return pipe with. In addition, a special room is formed at the opening of the suction pipe to cover the strainer, and the opening to the oil tank in this room is opened and closed to block or release the flow of hydraulic oil to the suction pipe. As
Japanese Utility Model Publication No. 52-157513 can be cited.
【0003】[0003]
【発明が解決しようとする課題】しかし、前記従来技術
の一旦別の器に排出する場合には、油を移す器が別に必
要となることや、またキャップで開口部を塞ぐ場合に
は、作業者の手が汚損し、作業効率が悪くなる等の問題
点があった。そして、次に挙げた従来技術の構成におい
ても、吸込管開口部周辺の構造が複雑となり、またスト
レーナの着脱に際して吸込管をも着脱しなければならな
いという問題点があった。However, in the case where the above-mentioned prior art is once discharged to another container, a separate device for transferring oil is required, and when the opening is closed with a cap, the work is required. There was a problem that the worker's hands became dirty and work efficiency deteriorated. Also, in the structure of the prior art described below, there is a problem that the structure around the opening of the suction pipe becomes complicated and the suction pipe must be attached and detached when the strainer is attached and detached.
【0004】本発明は、上記問題点を解消し、作動油ポ
ンプ、制御バルブ等のユニット部機器の保守点検を容易
に行う油圧パワーユニットを提供することを目的とす
る。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a hydraulic power unit that facilitates maintenance and inspection of equipment such as hydraulic oil pumps and control valves.
【0005】[0005]
【課題を解決するための手段】本発明は、油圧エレベー
タの油タンクから吸込管を介して作動油を吸い込む作動
油ポンプと、上記油タンク内へ上記作動油を戻り管を介
して送り込む制御バルブとを備えた油圧パワーユニット
において、前記吸込管と前記戻り管とを密閉するケース
と、このケース内の油を排出するポンプとを備えたこと
を特徴とする。DISCLOSURE OF THE INVENTION The present invention relates to a hydraulic oil pump for sucking hydraulic oil from an oil tank of a hydraulic elevator through a suction pipe, and a control valve for sending the hydraulic oil into the oil tank through a return pipe. And a case for sealing the suction pipe and the return pipe, and a pump for discharging the oil in the case.
【0006】[0006]
【作用】本発明は上記のように構成したため、吸込管お
よび戻り管の開口部周辺の油を除去することができる。
よって、油タンクから吸込管および戻り管への作動油の
流れを止めることができる。Since the present invention is configured as described above, it is possible to remove the oil around the openings of the suction pipe and the return pipe.
Therefore, the flow of hydraulic oil from the oil tank to the suction pipe and the return pipe can be stopped.
【0007】[0007]
【実施例】以下、本発明の一実施例を図1を用いて説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【0008】図1は本発明を用いたパワーユニットの全
体構成図である。FIG. 1 is an overall configuration diagram of a power unit using the present invention.
【0009】1は作動油ポンプで、油タンク2内の作動
油3をストレーナ4、吸込管5、パイプ6を介して吸込
み制御バルブ7を通して、図示しない油圧シリンダに吐
出してエレベータを上昇させる。7は制御バルブでエレ
ベータ下降時に開口して、前記油圧シリンダからの油を
戻り管8を介して油タンク2内に吐出する。9は前記作
動油ポンプ1と制御バルブ7から構成されるユニット部
である。Reference numeral 1 denotes a hydraulic oil pump that discharges hydraulic oil 3 in an oil tank 2 through a strainer 4, a suction pipe 5 and a pipe 6 to a hydraulic cylinder (not shown) through a suction control valve 7 to raise an elevator. A control valve 7 opens when the elevator descends, and discharges the oil from the hydraulic cylinder into the oil tank 2 through the return pipe 8. Reference numeral 9 is a unit portion composed of the hydraulic oil pump 1 and the control valve 7.
【0010】次に本発明を用いた封油作業の動作を説明
する。Next, the operation of the oil sealing operation using the present invention will be described.
【0011】まず、ケース10を吸込管5、戻り管8を
覆うように油タンク2の底部に密着させる。このケース
10の油タンクとの密着部分には、弾性体11が結合さ
れている。この弾性体には例えばゴムが考えられる。そ
して、排出ポンプ12によりケース10と油タンク2と
の間にある油を吸込み排出口13から排出する。このよ
うに動作させることにより本実施例によれば、ケース1
0と油タンク2との間には油がなくなり、吸込管5およ
び戻り管8の封油を行うことができる。First, the case 10 is brought into close contact with the bottom of the oil tank 2 so as to cover the suction pipe 5 and the return pipe 8. An elastic body 11 is coupled to a portion of the case 10 that is in close contact with the oil tank. The elastic body may be rubber, for example. Then, the discharge pump 12 sucks the oil between the case 10 and the oil tank 2 and discharges it from the discharge port 13. By operating in this way, according to the present embodiment, the case 1
Since there is no oil between 0 and the oil tank 2, the suction pipe 5 and the return pipe 8 can be sealed.
【0012】[0012]
【発明の効果】以上のように構成したため本発明は、油
タンクから吸込管および戻り管への油の流れを完全に止
めることができるため、作動油ポンプ、制御バルブ等か
らなるユニット部機器の保守点検を容易に行うことがで
きる。Since the present invention is configured as described above, the flow of oil from the oil tank to the suction pipe and the return pipe can be completely stopped. Therefore, the unit device including a hydraulic oil pump, a control valve, etc. Maintenance and inspection can be performed easily.
【図1】本発明を用いたパワーユニットの全体構成図で
ある。FIG. 1 is an overall configuration diagram of a power unit using the present invention.
1 作動油ポンプ 2 油タンク 3 作動油 5 吸込管 7 制御バルブ 8 戻り管 10 ケース 12 排出ポンプ 1 Hydraulic Oil Pump 2 Oil Tank 3 Hydraulic Oil 5 Suction Pipe 7 Control Valve 8 Return Pipe 10 Case 12 Discharge Pump
Claims (1)
介して作動油を吸い込む作動油ポンプと、上記油タンク
内へ上記作動油を戻り管を介して送り込む制御バルブと
を備えた油圧パワーユニットにおいて、前記吸込管と前
記戻り管とを密閉するケースと、このケース内の油を排
出するポンプとを備えたことを特徴とする油圧パワーユ
ニット。1. A hydraulic power unit comprising a hydraulic oil pump for sucking hydraulic oil from an oil tank of a hydraulic elevator via a suction pipe, and a control valve for sending the hydraulic oil into the oil tank via a return pipe, A hydraulic power unit comprising a case for sealing the suction pipe and the return pipe, and a pump for discharging oil in the case.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18146394A JPH0842501A (en) | 1994-08-02 | 1994-08-02 | Hydraulic power unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18146394A JPH0842501A (en) | 1994-08-02 | 1994-08-02 | Hydraulic power unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0842501A true JPH0842501A (en) | 1996-02-13 |
Family
ID=16101202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18146394A Pending JPH0842501A (en) | 1994-08-02 | 1994-08-02 | Hydraulic power unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0842501A (en) |
-
1994
- 1994-08-02 JP JP18146394A patent/JPH0842501A/en active Pending
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