JPH0440029Y2 - - Google Patents
Info
- Publication number
- JPH0440029Y2 JPH0440029Y2 JP19957087U JP19957087U JPH0440029Y2 JP H0440029 Y2 JPH0440029 Y2 JP H0440029Y2 JP 19957087 U JP19957087 U JP 19957087U JP 19957087 U JP19957087 U JP 19957087U JP H0440029 Y2 JPH0440029 Y2 JP H0440029Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure control
- valve seat
- oil
- electromagnetic proportional
- 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.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Magnetically Actuated Valves (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は、ソレノイドに通電する電流によつ
て設定油圧を変更制御する電磁比例圧力制御弁に
関するものである。[Detailed Description of the Invention] Industrial Application Field This invention relates to an electromagnetic proportional pressure control valve that changes and controls the set oil pressure by means of a current flowing through a solenoid.
従来の技術とその問題点
小型船舶の推進系路中或は作業車両の走行駆動
系路中に設けられた油圧クラツチに対する作用油
圧を正規油圧よりずつ低い値に減圧して油圧クラ
ツチをスリツプ運転させ、船舶の微速航行或は車
両の超低速走行を得るのに、油圧制御のために電
磁比例電圧制御弁を利用することは既に周知であ
り、例えば実開昭58−60072号公報にそのような
利用目的で開発された電磁比例圧力制御弁が開示
されている。Conventional technology and its problems A hydraulic clutch installed in the propulsion system of a small vessel or in the travel drive system of a working vehicle is operated in a slip mode by reducing the hydraulic pressure applied to the hydraulic clutch to a value lower than the normal hydraulic pressure. It is already well known that an electromagnetic proportional voltage control valve is used for hydraulic control in order to obtain slow-speed navigation of a ship or ultra-low-speed operation of a vehicle. An electromagnetic proportional pressure control valve developed for this purpose is disclosed.
ところで例えば漁船の推進系路中に設けられた
油圧クラツチの正規作用油圧が約30Kg／cm2である
のに対し、魚群の移動に合わせ漁船をトローリン
グ航行させるときに油圧クラツチに作用させる油
圧は約０−３Kg／cm2といつた低い値であり、従来
の電磁比例圧力制御弁によるときは次の問題が生
じていた。 By the way, for example, the normal operating hydraulic pressure of a hydraulic clutch installed in the propulsion system of a fishing boat is approximately 30 kg/cm 2 , whereas the hydraulic pressure that is applied to the hydraulic clutch when the fishing boat is trolled in response to the movement of schools of fish is approximately 30 kg/cm2. This is a low value of 0-3 Kg/cm 2 , and when using a conventional electromagnetic proportional pressure control valve, the following problems occurred.
すなわち電磁比例圧力制御弁によつて例えば30
Kg／cm2といつた高正規油圧を設定させながら、油
圧クラツチのスリツプ運転時の例えば０−３Kg／
cm2といつた低油圧をも制御させようとすると、低
油圧制御時の圧力制御範囲が1/10（＝3/30）とな
り、微細制御が困難であつたのである。 For example, 30
While setting a high normal oil pressure such as Kg/ cm2 , for example, 0-3Kg/cm2 when the hydraulic clutch is slipping,
When attempting to control even low oil pressures such as cm2 , the pressure control range during low oil pressure control was reduced to 1/10 (=3/30), making fine control difficult.
そして電磁比例圧力制御弁を利用するときは、
電気系統の故障に備えてソレノイドへの電流導通
が断たれたとき正規油圧が設定されるようにし
て、安全を確保する必要がある。またそのように
しておけば油圧クラツチの通常運転中は電力消費
が無くて経済的である。 And when using an electromagnetic proportional pressure control valve,
In preparation for an electrical system failure, it is necessary to ensure safety by setting the normal oil pressure when current to the solenoid is cut off. In addition, by doing so, there is no power consumption during normal operation of the hydraulic clutch, which is economical.
考案課題
そこでこの考案は、高正規油圧は別のリリーフ
弁により設定させることとし、低油圧制御のため
のみに利用される電磁比例圧力制御弁であつて高
正規油圧の設定を阻害しない制御弁を提供して、
上述の問題点を解消しようとするものである。In this invention, the high normal oil pressure is set by a separate relief valve, and the control valve is an electromagnetic proportional pressure control valve that is used only for low oil pressure control and does not interfere with the setting of the high normal oil pressure. provide,
This is an attempt to solve the above-mentioned problems.
課題解決手段
そのためこの考案は添付図に例示するように、
バルブケース内面上の弁座２に対し該弁座２の二
次側から着座するパイロツトバルブ３に対し、弁
座２への着座方向でソレノイド４のプツシユピン
４ａを作用させると共に弁座２からの離間方向に
弁ばね５を作用させて設けてある電磁比例圧力制
御弁において、次のような技術的手段を講じた。Problem-solving means Therefore, this invention, as illustrated in the attached figure,
The push pin 4a of the solenoid 4 is applied to the pilot valve 3 which is seated on the valve seat 2 on the inner surface of the valve case from the secondary side of the valve seat 2 in the direction of seating on the valve seat 2, and the pilot valve 3 is separated from the valve seat 2. In the electromagnetic proportional pressure control valve provided with the valve spring 5 acting in the direction, the following technical measures were taken.
すなわちパイロツトバルブ３に、弁座２から遠
い部分でバルブケース１の内面に摺接するように
大径部３ａを設けて、弁座二次側のバルブケース
内の空間６をタンクポート７に接続するための油
路穴８をパイロツトバルブ３に、該油路穴８のタ
ンクポート側の開口端８ａを上記大径部３ａの外
周面に臨ませて形成し、パイロツトバルブ３が弁
座２から最大限に離間すると上記開口端８ａがバ
ルブケ−ス１の内面によりブロツクされるように
構成するのである。 That is, the pilot valve 3 is provided with a large diameter portion 3a so as to be in sliding contact with the inner surface of the valve case 1 at a portion far from the valve seat 2, and a space 6 inside the valve case on the downstream side of the valve seat is connected to the tank port 7. An oil passage hole 8 is formed in the pilot valve 3 so that the opening end 8a of the oil passage hole 8 on the tank port side faces the outer peripheral surface of the large diameter portion 3a, and the pilot valve 3 is The structure is such that the opening end 8a is blocked by the inner surface of the valve case 1 when the opening end 8a is spaced as far as possible.
作 用
電磁比例圧力制御弁によつて設定される油圧
は、ソレノイド４に導通させる電流値の制御によ
り、パイロツトバルブ３に対するプツシユプン４
ａの押圧力と弁ばね５の押圧力とが釣合う値に制
御され、ソレノイド４の電流値が大であるほど高
められる。Operation: The hydraulic pressure set by the electromagnetic proportional pressure control valve is controlled by the current value passed through the solenoid 4, and the pressure is applied to the push valve 4 for the pilot valve 3.
The pressing force of a and the pressing force of the valve spring 5 are controlled to a balanced value, and the larger the current value of the solenoid 4 is, the higher the current value is.
そして電流導通の遮断によりソレノイド４を解
磁させると、プツシユピン４が第２図に図示のよ
うに後退し弁ばね５によつてパイロツトバルブ３
が弁座２から最大限に離間するように変位せしめ
られるから、同バルブ３に設けた油路穴８の前記
開口端８ａがバルブケース１の内面でブロツクさ
れ、タンクポート７方向への油流通が断たれる。 When the solenoid 4 is demagnetized by cutting off the current conduction, the push pin 4 moves back as shown in FIG.
is displaced to be as far away from the valve seat 2 as possible, so the opening end 8a of the oil passage hole 8 provided in the valve 3 is blocked by the inner surface of the valve case 1, preventing oil flow in the direction of the tank port 7. is cut off.
したがつて第１図に例示するように油圧クラツ
チCLに対する高正規油圧を設定するリリーフ弁
RVを別に設けておき、本考案に係る電磁比例圧
力制御弁は低油圧制御目的のみに利用することと
しておけば、油圧クラツチCLに対し制御された
低油圧を作用させたいときはソレノイド４への電
流導通を制御して低油圧制御を行なえ、また油圧
クラツチCLを高正規油圧で稼働させるときはソ
レノイド４を解磁させ電磁比例圧力制御弁を介し
ての油ドレーンを断つておくことで、リリーフ弁
RVに正規油圧を設定させることができる。 Therefore, as illustrated in Fig. 1, a relief valve is used to set a high normal oil pressure for the hydraulic clutch CL.
If the RV is provided separately and the electromagnetic proportional pressure control valve according to the present invention is used only for the purpose of low oil pressure control, when it is desired to apply a controlled low oil pressure to the hydraulic clutch CL, the solenoid 4 is Low oil pressure control can be performed by controlling current conduction, and when hydraulic clutch CL is operated at high normal oil pressure, relief can be achieved by demagnetizing solenoid 4 and cutting off the oil drain via the electromagnetic proportional pressure control valve. valve
You can have the RV set the normal oil pressure.
電気系統が故障したときはソレノイド４が解磁
し、パイロツトバルブ３が第２図に図示の位置を
とつて電磁比例圧力制御弁を介しての油ドレーン
が無くなるから、リリーフ弁RVが自動的に高正
規油圧を設定する。 When the electrical system fails, the solenoid 4 is demagnetized, the pilot valve 3 assumes the position shown in Figure 2, and there is no oil drain through the electromagnetic proportional pressure control valve, so the relief valve RV is automatically activated. Set high normal oil pressure.
実施例
図は、バランスピストン型の電磁比例圧力制御
弁に構成されている本案一実施例を示している。Embodiment The figure shows an embodiment of the present invention, which is configured as a balance piston type electromagnetic proportional pressure control valve.
バルブケース１には、前記タンクポート７の他
にポンプポート１０と油圧作用ポート１１を設け
てある。ポンプポート１０は油タンクＴから油を
吸入し吐出する油圧ポンプＰに、油圧作用ポート
１１は油圧クラツチCLに、そしてタンクポート
７は油タンクＴに、それぞれ接続されている。 In addition to the tank port 7, the valve case 1 is provided with a pump port 10 and a hydraulic port 11. The pump port 10 is connected to a hydraulic pump P that sucks and discharges oil from an oil tank T, the hydraulic port 11 is connected to a hydraulic clutch CL, and the tank port 7 is connected to an oil tank T, respectively.
ポンプポート１０と油圧作用ポート１１間を断
続するように設けられているバランスピストン１
２は通例構造のものであり、その前後でバルブケ
ース１内に形成された油室１３，１４に対して油
圧作用ポート１１を連通させる１対のオリフイス
１５，１６、及びバルブケース１の内周面との間
でポンプポート１０と油圧作用ポート１１間をブ
ロツクするランド１２ａを備え、背後側の油室１
４内に配置したスプリング１７によつてランド１
２ａによる両ポート１０，１１間のブロツクを解
除する向きに附勢されている。 A balance piston 1 provided to connect and connect a pump port 10 and a hydraulic port 11
Reference numeral 2 has a conventional structure, and includes a pair of orifices 15 and 16 that communicate the hydraulic pressure port 11 with oil chambers 13 and 14 formed in the valve case 1 at the front and rear thereof, and an inner periphery of the valve case 1. A land 12a is provided between the pump port 10 and the hydraulic port 11 to block the oil chamber 1 on the rear side.
Land 1 by spring 17 placed in 4.
2a is energized in the direction of releasing the block between the ports 10 and 11.
バルブケース１内に設けた隔壁部１ａには上記
した油室１４を前記空間６へと連通させる油路穴
１８を形成してあり、前記弁座２は該油路穴１８
端で隔壁部１ａに設けられている。パイロツトバ
ルブ３には前記大径部３ａ初端において環状の段
部３ｂを設けてあり、前記弁ばね５は隔壁部１ａ
に基端を受けさせて上記段部３ｂでパイロツトバ
ルブ３に作用させてある。またプツシユピン４ａ
は、バルブケース１の内面に摺接する座金１９を
介してパイロツトバルブ３に作用させてある。 An oil passage hole 18 is formed in the partition wall 1a provided in the valve case 1 to communicate the oil chamber 14 to the space 6, and the valve seat 2 is connected to the oil passage hole 18.
It is provided at the end of the partition wall 1a. The pilot valve 3 is provided with an annular step portion 3b at the beginning end of the large diameter portion 3a, and the valve spring 5 is provided with an annular step portion 3b at the beginning of the large diameter portion 3a.
The proximal end thereof is received and the pilot valve 3 is actuated by the stepped portion 3b. Also pushup pin 4a
is applied to the pilot valve 3 via a washer 19 that is in sliding contact with the inner surface of the valve case 1.
前記した油路穴８の開口端８ａは、パイロツト
バルブ３の外周面に形成した環状溝でもつて提供
されている。 The opening end 8a of the oil passage hole 8 described above is also provided by an annular groove formed on the outer peripheral surface of the pilot valve 3.
図示の実施例の利用方法は考案の作用の項で前
述した通りであり、またバランスピストン１２の
作用は通例の通りである。 The use of the illustrated embodiment is as described above in the operation of the invention, and the operation of the balance piston 12 is conventional.
図示の実施例からバランスピストン１２を取去
り隔壁部１ａの油路穴１８をポンプポートとし
て、そのようなポンプポートに油圧ポンプＰと油
圧クラツチCL間の給油回路から分岐させたリリ
ーフ回路を接続して用いることとしても、ソレノ
イド４を解磁させればパイロツトバルブ３が第２
図に図示の位置をとつてリリーフ弁RVに高正規
油圧の設定動作を行なわせうる。そしてそのとき
は電磁比例圧力制御弁が直動型のものとなるが、
この考案はそのような直動型圧力制御弁としても
実施できる。 The balance piston 12 is removed from the illustrated embodiment, and the oil passage hole 18 of the partition wall 1a is used as a pump port, and a relief circuit branched from the oil supply circuit between the hydraulic pump P and the hydraulic clutch CL is connected to such pump port. It can also be used as a secondary valve if the solenoid 4 is demagnetized.
By taking the position shown in the figure, the relief valve RV can be set to a high normal oil pressure. In that case, the electromagnetic proportional pressure control valve will be a direct-acting type.
This invention can also be implemented as such a direct acting pressure control valve.
考案の効果
この考案の電磁比例圧力制御弁は前述のよう
に、ソレノイド４の解磁により弁ばね５の附勢作
用で弁座２から最大限に離間する位置をとるパイ
ロツトバルブ３内に油リリーフ用の油路穴８を設
け、その油路穴８のポンプポート側開口端８ａが
パイロツトバルブ３の上記位置でバルブケース１
の内面によりブロツクされることとして、ソレノ
イド４の解磁により電磁比例圧力制御弁を介して
の油リリーフないしドレーンが行なわれないこと
としたから、第１図に図示したように高正規油圧
を設定するリリーフ弁RVと組合せて使用するこ
とにより、この考案に係る圧力制御弁によつては
油圧クラツチのスリツプ運転時のクラツチ作用油
圧のみを微細に変更制御させ、油圧クラツチの通
常運転時にはソレノイド４を解磁させて所要の高
正規油圧を油圧クラツチに作用させうることとす
る。Effects of the invention As described above, the electromagnetic proportional pressure control valve of this invention has oil relief in the pilot valve 3 which assumes the maximum distance from the valve seat 2 by the biasing action of the valve spring 5 when the solenoid 4 is demagnetized. An oil passage hole 8 is provided for the purpose, and the opening end 8a of the oil passage hole 8 on the pump port side is located at the above-mentioned position of the pilot valve 3, and the valve case 1
Since the demagnetization of solenoid 4 prevents oil relief or draining from occurring via the electromagnetic proportional pressure control valve, the high normal oil pressure is set as shown in Figure 1. By using it in combination with the relief valve RV, the pressure control valve according to this invention can finely change and control only the clutch action oil pressure during slip operation of the hydraulic clutch, and solenoid 4 can be controlled during normal operation of the hydraulic clutch. By demagnetizing it, the required high normal oil pressure can be applied to the hydraulic clutch.
そして電気系統が故障しソレノイど４への電流
導通が断たれると、組合せて用いる別のリリーフ
弁RVによる高正規油圧が自動的に成立すること
とするから、船舶が航行不能となつたり車両が走
行不能となつたりすることがなく安全が確保さ
れ、また油圧クラツチの通常運転中はソレノイド
４を解磁することから余分の電力消費が無くされ
る。 If the electrical system fails and the current to solenoid 4 is cut off, a high normal oil pressure is automatically established by another relief valve RV used in combination, so that the ship becomes unable to navigate or the vehicle Safety is ensured because the vehicle does not become unable to run, and extra power consumption is eliminated because the solenoid 4 is demagnetized during normal operation of the hydraulic clutch.
第１図は一実施例とその使用方法を示す縦断面
図及び油圧回路図、第２図は同実施例の作用を説
明するための縦断面図である。
１……バルブケース、２……弁座、３……パイ
ロツトバルブ、３ａ……大径部、４……ソレノイ
ド、４ａ……プツシユピン、５……弁ばね、６…
…空間、７……タンクポート、８……油路穴、８
ａ……開口端、１０……ポンプポート、１１……
油圧作用ポート、１２……バランスピストン。
FIG. 1 is a longitudinal cross-sectional view and a hydraulic circuit diagram showing one embodiment and its usage, and FIG. 2 is a longitudinal cross-sectional view for explaining the operation of the same embodiment. DESCRIPTION OF SYMBOLS 1... Valve case, 2... Valve seat, 3... Pilot valve, 3a... Large diameter part, 4... Solenoid, 4a... Push pin, 5... Valve spring, 6...
...Space, 7...Tank port, 8...Oil passage hole, 8
a... Open end, 10... Pump port, 11...
Hydraulic port, 12...Balance piston.
Claims (1)
二次側から着座するパイロツトバルブ３に対し、
弁座２への着座方向でソレノイド４のプツシユピ
ン４ａを作用させると共に弁座２からの離間方向
に弁ばね５を作用させて設けてある電磁比例圧力
制御弁において、 パイロツトバルブ３に、弁座２から遠い部分で
バルブケース１の内面に摺接するように大径部３
ａを設けて、弁座二次側のバルブケース内の空間
６をタンクポート７に接続するための油路穴８を
パイロツトバルブ３に、該油路穴８のタンクポー
ト側の開口端８ａを上記大径部３ａの外周面に臨
ませて形成し、パイロツトバルブ３が弁座２から
最大限に離間すると上記開口端８ａがバルブケ−
ス１の内面によりブロツクされるように構成した
ことを特徴とする電磁比例圧力制御弁。[Claims for Utility Model Registration] For a pilot valve 3 seated on a valve seat 2 on the inner surface of a valve case from the secondary side of the valve seat 2,
In the electromagnetic proportional pressure control valve, the push pin 4a of the solenoid 4 is applied in the direction of seating on the valve seat 2, and the valve spring 5 is applied in the direction of separation from the valve seat 2. The large-diameter portion 3 is placed in sliding contact with the inner surface of the valve case 1 at a portion far from the
a, an oil passage hole 8 for connecting the space 6 in the valve case on the secondary side of the valve seat to the tank port 7 is provided in the pilot valve 3, and an opening end 8a of the oil passage hole 8 on the tank port side is connected to the pilot valve 3. The opening end 8a is formed so as to face the outer peripheral surface of the large diameter portion 3a, and when the pilot valve 3 is separated from the valve seat 2 to the maximum extent, the opening end 8a opens into the valve case.
An electromagnetic proportional pressure control valve characterized in that it is configured to be blocked by the inner surface of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19957087U JPH0440029Y2 (en) | 1987-12-29 | 1987-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19957087U JPH0440029Y2 (en) | 1987-12-29 | 1987-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01104439U JPH01104439U (en) | 1989-07-14 |
| JPH0440029Y2 true JPH0440029Y2 (en) | 1992-09-18 |
Family
ID=31490018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19957087U Expired JPH0440029Y2 (en) | 1987-12-29 | 1987-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0440029Y2 (en) |
-
1987
- 1987-12-29 JP JP19957087U patent/JPH0440029Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01104439U (en) | 1989-07-14 |
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