JPH04354786A - Hydraulic elevator - Google Patents
Hydraulic elevatorInfo
- Publication number
- JPH04354786A JPH04354786A JP3155963A JP15596391A JPH04354786A JP H04354786 A JPH04354786 A JP H04354786A JP 3155963 A JP3155963 A JP 3155963A JP 15596391 A JP15596391 A JP 15596391A JP H04354786 A JPH04354786 A JP H04354786A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- hydraulic
- hydraulic oil
- hydraulic elevator
- purify
- 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
- 239000003921 oil Substances 0.000 claims abstract description 44
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000000746 purification Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Types And Forms Of Lifts (AREA)
- Fluid-Pressure Circuits (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、油タンクの作動油に
電動油ポンプが浸漬して設けられた油圧エレベーターに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic elevator having an electric oil pump immersed in hydraulic oil in an oil tank.
【０００２】0002
【従来の技術】図３は、例えば特開平３−１８５８５号
公報に示された従来の油圧エレベーターの概念図である
。図において、１は油圧エレベーターの機械室、２は機
械室１に設けられた油タンク、３は油タンク２に収容さ
れた作動油、４は作動油３に浸漬して配置された電動機
、５は電動機４に直結され駆動される油ポンプで、吐出
管５ａが設けられている。６は吐出管５ａが接続された
流量制御弁、７は油ジャッキと、これに支持されたかご
７ａからなる昇降手段で、管路８によって流量制御弁６
に接続されている。９は流量制御弁６と油タンク２を接
続した戻り管である。2. Description of the Related Art FIG. 3 is a conceptual diagram of a conventional hydraulic elevator disclosed in, for example, Japanese Unexamined Patent Publication No. 3-18585. In the figure, 1 is a machine room of a hydraulic elevator, 2 is an oil tank provided in the machine room 1, 3 is hydraulic oil stored in the oil tank 2, 4 is an electric motor placed immersed in the hydraulic oil 3, and 5 An oil pump is directly connected to and driven by an electric motor 4, and is provided with a discharge pipe 5a. Reference numeral 6 indicates a flow control valve to which a discharge pipe 5a is connected, and reference numeral 7 indicates an elevating means consisting of an oil jack and a cage 7a supported by the oil jack.
It is connected to the. 9 is a return pipe connecting the flow rate control valve 6 and the oil tank 2.
【０００３】従来の油圧エレベーターは上記のように構
成されて、電動機４が付勢され油ポンプ５が動作し、昇
降手段７に作動油３が供給され、また流量制御弁６を介
して昇降手段７から作動油３が排出されて、かご７ａを
昇降させる。また、流量制御弁６により作動油３流量が
制御され、かご７ａが適宜に加速、減速されるようにな
っている。The conventional hydraulic elevator is constructed as described above, and the electric motor 4 is energized to operate the oil pump 5, and the hydraulic oil 3 is supplied to the lifting means 7, and the lifting means is supplied via the flow rate control valve 6. Hydraulic oil 3 is discharged from 7 to raise and lower the car 7a. Further, the flow rate of the hydraulic oil 3 is controlled by the flow rate control valve 6, so that the car 7a is accelerated or decelerated as appropriate.
【０００４】0004
【発明が解決しようとする課題】上記のような従来の油
圧エレベーターでは、作動油３中で、電動機４、油ポン
プ５が動作するため、微小塵埃、摩耗金属粉等が作動油
３に混入する。このため、油圧エレベーターの正常な運
転が損なわれやすくなるという問題点があった。また、
作動油３の浄化のため汎用の浄油装置が使用されるが、
この場合には設置場所の確保、浄化作業のための手配等
、煩雑な手数がかかるという問題点がある。[Problems to be Solved by the Invention] In the conventional hydraulic elevator as described above, since the electric motor 4 and the oil pump 5 operate in the hydraulic oil 3, minute dust, worn metal powder, etc. are mixed into the hydraulic oil 3. . Therefore, there has been a problem in that the normal operation of the hydraulic elevator is likely to be impaired. Also,
A general-purpose oil purification device is used to purify the hydraulic oil 3, but
In this case, there is a problem in that it takes a lot of time and effort to secure an installation location, make arrangements for purification work, etc.
【０００５】この発明は、かかる問題点を解決するため
になされたものであり、作動油を簡易な手段で浄化する
ことができる油圧エレベーターを得ることを目的とする
。[0005] The present invention was made to solve this problem, and an object of the present invention is to provide a hydraulic elevator in which hydraulic oil can be purified by simple means.
【０００６】[0006]
【課題を解決するための手段】この発明に係る油圧エレ
ベーターにおいては、作動油の浄油装置が油タンクに設
けられる。また、作動油の冷却装置に浄油装置の循環手
段が接続される。[Means for Solving the Problems] In the hydraulic elevator according to the present invention, a hydraulic oil purifying device is provided in the oil tank. Further, a circulation means of the oil purifier is connected to the hydraulic oil cooling device.
【０００７】[0007]
【作用】上記のように構成された油圧エレベーターの作
動油は浄油装置の循環手段によって循環して浄化される
。また、浄油装置の循環手段によって作動油が冷却装置
へ送油されて熱交換が行なわれる。[Operation] The hydraulic oil of the hydraulic elevator constructed as described above is circulated and purified by the circulation means of the oil purifier. Moreover, the hydraulic oil is sent to the cooling device by the circulation means of the oil purification device, and heat exchange is performed.
【０００８】[0008]
【実施例】図１及び図２は、この発明の一実施例を示す
図であり、図中、図３と同一符号は相当部分を示し、１
０は油タンク２の上側に設けられた浄油装置で、浄化器
１０ａ、ポンプを主体とし、吸入管１０ｂ、戻り管１０
ｃを有する循環手段１０ｄが設けられている。１０ｅは
油タンク２の底面に接近して配置された吸入管１０ｂの
吸入口、１１は油タンク２の上側に浄油装置１０と隣接
して設けられた冷却装置で、循環手段１０ｄに接続され
、また戻り管１１ａが設けられている。１２は浄化器１
０ａの送入側、排出側の管路にそれぞれ設けられたスト
ップバルブ、１３は浄化器１０ａに設けられて浄化能力
を表示する表示器、１４は油タンク２に設けられた循環
手段１０ｄの運転盤、１４ａは運転スイッチ、１４ｂは
温度検出器の常開接点、１４ｃは運転リレー、１４ｄは
運転リレーの常開接点、１４ｅは循環手段１０ｄの付勢
回路、＋、−は電源である。[Embodiment] FIGS. 1 and 2 are diagrams showing an embodiment of the present invention. In the figures, the same reference numerals as in FIG. 3 indicate corresponding parts, and 1
0 is an oil purification system installed above the oil tank 2, which mainly includes a purifier 10a, a pump, a suction pipe 10b, and a return pipe 10.
Circulation means 10d having c. 10e is a suction port of a suction pipe 10b arranged close to the bottom of the oil tank 2, and 11 is a cooling device provided above the oil tank 2 adjacent to the oil purifying device 10, which is connected to the circulation means 10d. , and a return pipe 11a is also provided. 12 is purifier 1
0a is a stop valve provided on the inlet and discharge side pipes, 13 is an indicator provided on the purifier 10a to display the purification capacity, and 14 is an operation of the circulation means 10d provided on the oil tank 2. 14a is an operating switch, 14b is a normally open contact of a temperature detector, 14c is an operating relay, 14d is a normally open contact of the operating relay, 14e is an energizing circuit for the circulation means 10d, and + and - are power supplies.
【０００９】上記のように構成された油圧エレベーター
においては、電動機４が付勢されて作動油３の圧送によ
り、かご７ａが上昇運転され、また流量制御弁６を介し
て作動油３が昇降手段７から排出されて下降運転される
。そして、作動油３の油温が所定値よりも上昇した場合
には接点１４ｂが閉成し、（＋）−（１４ｂ）−（１４
ｃ）−（−）の回路によって運転リレー１４ｃが付勢さ
れて接点１４ｄが閉成する。これによって、（＋）−（
１４ｄ）−（１４ｅ）−（−）の回路によって、付勢回
路１４ｅが動作して循環手段１０ｄが運転される。この
ため油タンク２の作動油３は浄油装置１０を循環して、
混入した塵埃等の異物が除去されて浄化される。また、
同時に冷却装置１１に循環して冷却される。そして作動
油３の油温が所定値よりも下降すると、接点１４ｂが開
放し、循環手段１０ｄが消勢される。したがって簡易な
構成であって、容易に設置できる浄油装置１０によって
、特に手数を要することなく、作動油３を浄化でき、少
ない費用で油圧エレベーターを正常状態に容易に維持す
ることができる。In the hydraulic elevator constructed as described above, the electric motor 4 is energized and the car 7a is driven upward by force feeding the hydraulic oil 3, and the hydraulic oil 3 is supplied to the lifting means via the flow rate control valve 6. It is discharged from 7 and operated downward. When the temperature of the hydraulic oil 3 rises above a predetermined value, the contact 14b is closed and (+)-(14b)-(14
c) The operating relay 14c is energized by the -(-) circuit, and the contact 14d is closed. By this, (+)-(
14d)-(14e)-(-) operates the energizing circuit 14e and operates the circulation means 10d. Therefore, the hydraulic oil 3 in the oil tank 2 circulates through the oil purifier 10,
Foreign matter such as dust is removed and purified. Also,
At the same time, it is circulated to the cooling device 11 and cooled. When the temperature of the hydraulic oil 3 falls below a predetermined value, the contact 14b opens and the circulation means 10d is deenergized. Therefore, with the oil purifying device 10 which has a simple configuration and can be easily installed, the hydraulic oil 3 can be purified without any special effort, and the hydraulic elevator can be easily maintained in a normal state at a low cost.
【００１０】また、作動油３の油温の如何にかかわらず
、人為操作により、運転スイッチ１４ａを閉成すること
によって、循環手段１０ｄを付勢することができる。
これによって、必要に応じて作動油３の浄化が可能であ
り、また、循環手段１０ｄが冷却装置１１用にも兼用さ
れているので、部材数を少なくすることができ、製造費
を低減することができる。Furthermore, regardless of the temperature of the hydraulic oil 3, the circulation means 10d can be energized by manually closing the operation switch 14a. This makes it possible to purify the hydraulic oil 3 as necessary, and since the circulation means 10d is also used for the cooling device 11, the number of parts can be reduced, and manufacturing costs can be reduced. Can be done.
【００１１】また、油タンク２の底面に接近して吸入口
１０ｅが設けてあるので、油タンク２底部に沈降した異
物が確実に吸入される。したがって作動油３を効率よく
浄化することができる。Furthermore, since the suction port 10e is provided close to the bottom of the oil tank 2, foreign matter that has settled at the bottom of the oil tank 2 is reliably sucked in. Therefore, the hydraulic oil 3 can be efficiently purified.
【００１２】また、ストップバルブ１２を設けたので、
これらストップバルブ１２を閉塞して反浄化器１０ａ側
の継手（図示しない）を外すことによって、内部の作動
油３の流出を伴わず、浄化器１０ａを油タンク２から取
り外すことができる。このため、容易に保守点検ができ
、作業能率を向上することができる。Furthermore, since the stop valve 12 is provided,
By closing these stop valves 12 and removing the joint (not shown) on the side opposite to the purifier 10a, the purifier 10a can be removed from the oil tank 2 without causing the internal hydraulic oil 3 to flow out. Therefore, maintenance and inspection can be easily performed and work efficiency can be improved.
【００１３】また、表示器１３を設けたので、浄化器１
０ａの浄化能力、例えばフィルター（図示しない）の状
況を容易に認知することができる。このため部材の交換
等の保守要否の判定に便利である。Furthermore, since the display 13 is provided, the purifier 1
The purification ability of 0a, for example, the status of a filter (not shown) can be easily recognized. Therefore, it is convenient for determining whether maintenance such as replacement of parts is necessary.
【００１４】[0014]
【発明の効果】この発明は、以上説明したように構成さ
れているので、次に述べるような効果を得ることができ
る。[Effects of the Invention] Since the present invention is constructed as described above, it is possible to obtain the following effects.
【００１５】油タンクに作動油の浄油装置が設けられる
ので、狭隘な機械室であっても容易に浄油可能であり、
少ない手数で浄油でき、安価に正常運転管理ができる。[0015] Since the oil tank is equipped with a hydraulic oil purification device, it is possible to easily purify the oil even in a narrow machine room.
Oil can be purified with less effort and normal operation can be managed at low cost.
【００１６】また、作動油の冷却装置に浄油装置の循環
手段が接続されるので、部材数が少なくなり、作動油の
冷却、浄化作用を少ない設備費で得ることができる。Furthermore, since the circulation means of the oil purifying device is connected to the hydraulic oil cooling device, the number of parts is reduced, and the cooling and purifying effects of the hydraulic oil can be obtained at low equipment costs.
【図１】この発明の実施例１を示す構成概念図。FIG. 1 is a conceptual configuration diagram showing a first embodiment of the present invention.
【図２】図１の要部電気回路図。FIG. 2 is an electrical circuit diagram of the main part of FIG. 1;
【図３】従来の油圧エレベーターを示す図１相当図。FIG. 3 is a diagram corresponding to FIG. 1 showing a conventional hydraulic elevator.
２ 油タンク ３ 作動油 ４ 電動機 ５ 油ポンプ １０ 浄油装置 １０ｄ 循環手段 １１ 冷却装置 2 Oil tank 3 Hydraulic oil 4 Electric motor 5 Oil pump 10 Oil purification equipment 10d Circulation means 11 Cooling device
Claims (2)
記作動油を収容した油タンクに設けられて上記作動油に
浸漬して配置された油ポンプ及びこの油ポンプに直結さ
れた電動機と、上記油タンクに設けられて上記作動油を
循環浄化する浄油装置とを備えた油圧エレベーター。1. A lifting means receiving supply of hydraulic oil, an oil pump provided in an oil tank containing the hydraulic oil and placed immersed in the hydraulic oil, and an electric motor directly connected to the oil pump. A hydraulic elevator comprising: an oil purifier installed in the oil tank to circulate and purify the hydraulic oil.
油される上記作動油の冷却装置を備えた請求項１記載の
油圧エレベーター。2. The hydraulic elevator according to claim 1, further comprising a cooling device for the hydraulic oil to which the hydraulic oil is fed by a circulation means of an oil purification system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3155963A JPH04354786A (en) | 1991-05-31 | 1991-05-31 | Hydraulic elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3155963A JPH04354786A (en) | 1991-05-31 | 1991-05-31 | Hydraulic elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04354786A true JPH04354786A (en) | 1992-12-09 |
Family
ID=15617367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3155963A Pending JPH04354786A (en) | 1991-05-31 | 1991-05-31 | Hydraulic elevator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04354786A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499567B2 (en) * | 1999-08-30 | 2002-12-31 | Otis Elevator Company | Hydraulic power unit for an elevator drive |
-
1991
- 1991-05-31 JP JP3155963A patent/JPH04354786A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6499567B2 (en) * | 1999-08-30 | 2002-12-31 | Otis Elevator Company | Hydraulic power unit for an elevator drive |
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