JPS6322473A - Oil-temperature keeping circuit for hydraulic elevator - Google Patents
Oil-temperature keeping circuit for hydraulic elevatorInfo
- Publication number
- JPS6322473A JPS6322473A JP61163660A JP16366086A JPS6322473A JP S6322473 A JPS6322473 A JP S6322473A JP 61163660 A JP61163660 A JP 61163660A JP 16366086 A JP16366086 A JP 16366086A JP S6322473 A JPS6322473 A JP S6322473A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- tank
- valve
- hydraulic
- bypass valve
- 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
- 238000012423 maintenance Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 27
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Landscapes
- Elevator Control (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は油圧エレベータの制御装置において、特に、油
圧作動油が低温になった際に動作する油温依持回路に係
り、特に、エレベータ取りかごを動かすことなく動作さ
せる回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for a hydraulic elevator, and particularly relates to an oil temperature dependent circuit that operates when hydraulic oil becomes low temperature. This relates to a circuit that operates the car without moving it.
従来日立評論１９７１ ＶＯＬ ５３ ＮＩＯの
様に、油温維回路は三相誘導電動機、油圧ポンプバイパ
ス弁、逆止弁および電磁切換弁で構成され、油温保持運
転を行なっていた。この時には、三相誘導電動機２を回
転させ、ポンプ１から圧油を吐−出する。この圧油はバ
イパス弁６を通ってタンク３へ置流する。一方、バイパ
ス弁６はソレノイドバルブ７から導びかれる圧油とばね
による力が右側から加わり、ポンプ１から導びかれる圧
油による力が左側に加わるため、両者の力が釣りあった
ところでバイパス弁６の開度は決定する。このバイパス
弁６の開度は従来の装置ではエレベータ乗りかとを着床
運転させるように設定していた。つまり、前床運転に必
要な圧油は逆止弁５を押し−Ｅげ、シリンダ４に送り込
まれ、余分な圧油はバイパス弁６を通ってタンクへ還流
するように、ばね力を調整していた。このため、油温保
持回路が動作することにより、エレベータ乗りかごが動
くという問題があった。Conventionally, as in Hitachi Hyoron 1971 VOL 53 NIO, the oil temperature fiber circuit was comprised of a three-phase induction motor, a hydraulic pump bypass valve, a check valve, and an electromagnetic switching valve to perform oil temperature maintenance operation. At this time, the three-phase induction motor 2 is rotated and pressure oil is discharged from the pump 1. This pressure oil flows into the tank 3 through the bypass valve 6. On the other hand, the bypass valve 6 is affected by the pressure oil led from the solenoid valve 7 and the spring applied from the right side, and the pressure oil led from the pump 1 is applied from the left side, so when the two forces are balanced, the bypass valve The opening degree of No. 6 is determined. In the conventional system, the opening degree of the bypass valve 6 was set so as to cause the elevator board to land on the floor. In other words, the spring force is adjusted so that the pressure oil necessary for front bed operation pushes the check valve 5 and is sent into the cylinder 4, and the excess pressure oil flows back to the tank through the bypass valve 6. was. Therefore, there is a problem in that the elevator car moves due to the operation of the oil temperature holding circuit.
上記の様に、従来の油温保持回路ではエレベータの呼び
もないのにエレベータ乗りかごが動くことがあった。As mentioned above, in the conventional oil temperature maintenance circuit, the elevator car sometimes moves even when the elevator is not called.
本発明の目的は、油温保持回路が動作する間、エレベー
タ乗りかごを動かさない回路を提供することにある。It is an object of the present invention to provide a circuit that does not move the elevator car while the oil temperature maintenance circuit is operating.
（問題点を解決するための手段〕
上目的は、バイパス弁の背圧が上昇することを除くだめ
、背油をタンクへ還流することにより達成される。すな
わち、第２図において、バイパス弁にポンプ圧が加わっ
ているボートからタンクへ油の管路を設け、その管路の
途中に管路を閉、あるいは、開にするソレノイドバルブ
を設ける。(Means for solving the problem) The above objective is achieved by recirculating the back oil to the tank without increasing the back pressure of the bypass valve. An oil pipeline is installed from the boat to the tank where pump pressure is applied, and a solenoid valve is installed in the middle of the pipeline to close or open the pipeline.
油温維持回路動作時には二相導電動機を回転させ油圧ポ
ンプから圧油を吐出させる。この時ソレノイドバルブ７
は励磁しない。第３図においてソレノイドバルブ７によ
りポンプ吐出圧力がバイパス弁６のばねボート側に加わ
る。一方、ソレノイドバルブ８はバイパス弁６の背圧ボ
ートの圧油をタンク３へ還流している。このため、バイ
パス弁６はばねによって全開となり、ポンプ１から吐出
した圧油を全量タンク３へ還流する。このようにすると
、油温維持回路動作中のポンプ吐出圧は逆止弁上部の圧
力、すなわち、油圧シリンダ４内の圧力より高くなるこ
とはないのでエレベータケージが動くことはない。When the oil temperature maintenance circuit is in operation, the two-phase conductive motor is rotated to discharge pressure oil from the hydraulic pump. At this time, solenoid valve 7
is not excited. In FIG. 3, pump discharge pressure is applied to the spring boat side of the bypass valve 6 by the solenoid valve 7. On the other hand, the solenoid valve 8 returns the pressure oil in the back pressure boat of the bypass valve 6 to the tank 3. Therefore, the bypass valve 6 is fully opened by the spring, and the entire amount of pressure oil discharged from the pump 1 is returned to the tank 3. In this way, the pump discharge pressure during the operation of the oil temperature maintenance circuit will never become higher than the pressure above the check valve, that is, the pressure inside the hydraulic cylinder 4, so the elevator car will not move.
１５．以下、本発明の一実施例を第１図により説明すル
ー
、−る。油温維持回路用ソレノイドバルブ７．８はソレ
ノイドコイル１２により励磁されるスプール９と励磁さ
れない時にはスプール９を押し上げているはね１０、ス
プール９が励磁されている時には逆止弁５の働きをもつ
スリーブ１１から成っている。油温維持回路が動作中に
はソレノイドコイル１２を励磁しないのでスプール９は
ばね１０により押し上げられバイパス弁６からタンク３
へ管路は開く。又、ソレノイドコイル１２を励磁する場
合には、スプール９とスリーブ１１が還流を防ぐため、
バイパス弁６からタンクへの管路は閉じる。15. Hereinafter, one embodiment of the present invention will be explained with reference to FIG. The solenoid valve 7.8 for the oil temperature maintenance circuit has a spool 9 energized by a solenoid coil 12, a spring 10 that pushes up the spool 9 when it is not energized, and a check valve 5 when the spool 9 is energized. It consists of a sleeve 11. Since the solenoid coil 12 is not energized while the oil temperature maintenance circuit is in operation, the spool 9 is pushed up by the spring 10 and removed from the bypass valve 6 to the tank 3.
The conduit opens. Furthermore, when the solenoid coil 12 is excited, the spool 9 and sleeve 11 prevent reflux.
The pipeline from the bypass valve 6 to the tank is closed.
本実施例によれば、油温維持回路が動作中にエレベータ
ケージを動かさずに油温の維持を行なうことができ、通
常のエレベータの運転ではソレノイドコイル１２を励磁
しておくことにより、回路を構成することができる。１
１はスリーブ。According to this embodiment, the oil temperature can be maintained without moving the elevator car while the oil temperature maintenance circuit is in operation, and during normal elevator operation, the circuit is activated by energizing the solenoid coil 12. Can be configured. 1
1 is the sleeve.
本発明によれば、油温維持回路の動作中にポンプからの
吐出油をバイパス弁から全量タンクへ還流することがで
きるため、エレベータのケージを動かすことなしに油温
を維持することができる。According to the present invention, the oil discharged from the pump can be completely returned to the tank from the bypass valve while the oil temperature maintenance circuit is in operation, so the oil temperature can be maintained without moving the elevator car.
第１図は本発明の一実施例のソレノイドバルブの断面図
、第２図は従来の油温維持回路の回路図、第３図は本発
明による回路図である。
７．８・・・ソレノイドバルブ。FIG. 1 is a sectional view of a solenoid valve according to an embodiment of the present invention, FIG. 2 is a circuit diagram of a conventional oil temperature maintenance circuit, and FIG. 3 is a circuit diagram according to the present invention. 7.8...Solenoid valve.
Claims (1)
電動機と、前記油圧ポンプからの吐出油をタンクへ戻す
バイパス弁と、前記バイパス弁から前記タンクへ戻す油
量を調整するソレノイドバルブと前記油圧ポンプと油圧
ジャッキの間に設けた逆止弁とを含む油圧エレベータ用
制御弁において、 前記バイパス弁の前記油圧ポンプ動作時には。 常時、ポンプ圧力が加わるポートからタンクに管路を設
け、その途中に前記ソレノイドバルブを設けたことを特
徴とする油圧エレベータ用油温維持回路。[Scope of Claims] 1. A hydraulic pump, a three-phase induction motor that drives the hydraulic pump, a bypass valve that returns oil discharged from the hydraulic pump to the tank, and an amount of oil that is returned from the bypass valve to the tank. In a hydraulic elevator control valve including a solenoid valve to be adjusted and a check valve provided between the hydraulic pump and the hydraulic jack, when the bypass valve operates the hydraulic pump. An oil temperature maintenance circuit for a hydraulic elevator, characterized in that a conduit is provided from a port to which pump pressure is constantly applied to a tank, and the solenoid valve is provided in the middle of the conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61163660A JPS6322473A (en) | 1986-07-14 | 1986-07-14 | Oil-temperature keeping circuit for hydraulic elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61163660A JPS6322473A (en) | 1986-07-14 | 1986-07-14 | Oil-temperature keeping circuit for hydraulic elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6322473A true JPS6322473A (en) | 1988-01-29 |
Family
ID=15778160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61163660A Pending JPS6322473A (en) | 1986-07-14 | 1986-07-14 | Oil-temperature keeping circuit for hydraulic elevator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6322473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9279512B2 (en) | 2012-01-31 | 2016-03-08 | Denso Corporation | Check valve |
-
1986
- 1986-07-14 JP JP61163660A patent/JPS6322473A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9279512B2 (en) | 2012-01-31 | 2016-03-08 | Denso Corporation | Check valve |
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