JPS64773B2 - - Google Patents
Info
- Publication number
- JPS64773B2 JPS64773B2 JP18889680A JP18889680A JPS64773B2 JP S64773 B2 JPS64773 B2 JP S64773B2 JP 18889680 A JP18889680 A JP 18889680A JP 18889680 A JP18889680 A JP 18889680A JP S64773 B2 JPS64773 B2 JP S64773B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- back pressure
- closing
- rod
- flow path
- 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
- 239000007788 liquid Substances 0.000 claims description 74
- 239000012530 fluid Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 description 11
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 230000005284 excitation Effects 0.000 description 8
- 230000002265 prevention Effects 0.000 description 7
- 238000005086 pumping Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
【発明の詳細な説明】
本発明はしや断器のしや断、投入操作をする液
圧操作装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic operating device for cutting and closing a cutter.
近年、送電系統の大容量化、並びに超々高圧化
等の実現により、その回路に設けられるしや断器
の性能向上は目覚しいものがあり、またその性能
を向上するための要求は大きい。このため、最近
特に脚光をあびた六弗化硫黄ガス（SF6ガス）絶
縁のガスしや断器等が用いられ、駆動源として気
体圧が使われている。 In recent years, with the realization of larger capacity and ultra-high voltage power transmission systems, there has been a remarkable improvement in the performance of shield breakers provided in the circuits, and there is a great demand for improving the performance. For this reason, sulfur hexafluoride gas (SF 6 gas) insulated gas shields and disconnectors, which have recently been in the spotlight, are used, and gas pressure is used as the driving source.
しかし送電系統の大容量化及び超々高圧化に伴
ない駆動力が著しく大きくなり、そのため、空気
圧シリンダ及び空気タンク等の設備が大きいもの
となり、同時にしや断操作時に発生する空気の給
排気による騒音が大きくなるため、消音装置も必
要となる。 However, as power transmission systems become larger in capacity and ultra-high pressure, the driving force becomes significantly larger, and as a result, equipment such as pneumatic cylinders and air tanks becomes larger, and at the same time, noise is generated due to air supply and exhaust during shrinking operations. Because of the large size, a silencer is also required.
これに対し液体駆動装置は空気圧に比し、高圧
化が容易であるため、縮小化が容易であり、しや
断操作時の騒音も著しく軽減され、又液体の非圧
縮性により応答性が優れている等の利点がある。
したがつて、この液体駆動装置を電力用しや断器
の操作装置として使用するにあたつては電力系統
の非常装置としての役目からしても、その時の不
動作、又は異常動作は許されない。さらにこのよ
うなしや断器の操作機構としては高速大出力の他
に次に列挙するような機能も合わせて要求され
る。 On the other hand, liquid drive devices can easily increase the pressure compared to air pressure, so they can be easily downsized, the noise during shearing operations is significantly reduced, and the incompressibility of liquid provides excellent responsiveness. There are advantages such as:
Therefore, when using this liquid drive device as an operating device for a power supply or disconnection switch, non-operation or abnormal operation is not allowed, even in view of its role as an emergency device for the power system. . Furthermore, the operation mechanism for such a disconnector is required to have the following functions in addition to high speed and large output.
(i) 同時励磁防止機能。これは手動等によりしや
断器に投入指令、すなわち励磁を与えている最
中に電力系統の異常等でしや断指令が入つた時
に、投入動作中にしや断動作をすることを防止
する。逆にしや断動作中に投入指令が入つたと
きも同様である。(i) Simultaneous excitation prevention function. This prevents the shear cut-off operation from occurring during the closing operation when a cut-off command is received due to an abnormality in the electric power system while the cut-off command is being manually applied, that is, excitation is being applied to the cut-off switch. . The same holds true when a closing command is received during the sheath cutting operation.
(ii) ポンピング防止機能。これは手動等によりし
や断器に投入指令を与えている最中に、電力系
統の異常時等でしや断指令が入つた時に上記同
時励磁防止機能により投入動作中に投入動作防
止することは可能であるが投入動作完了後にし
や断動作を行なう。この時しや断動作完了時に
なを投入指令が続行中の場合再度投入動作を行
なう。すなわち際限なく投入、しや断、投入と
動作が続き、これをポンピング動作と呼ぶが、
しや断器はしや断指令が優先であり、再度投入
動作を行なつてはならない。もし再度投入動作
を必要とする場合には、一度投入指令解除の
後、再度投入指令を行なつて初めて投入動作を
可能とする必要がある。特に手動等で投入指令
時間は少なくとも１秒以上であろうが、この時
投入、しや断動作何れも0.1秒又はそれ以下で
あり、この１秒間にポンピング動作を行なうお
それがある。(ii) Anti-pumping features. This is to prevent the closing operation during the closing operation using the simultaneous excitation prevention function described above when a closing command is given to the shield disconnector manually or the like due to an abnormality in the power system, etc. Although it is possible, the cutting operation is performed after the closing operation is completed. At this time, when the closing operation is completed, if the closing command is still in progress, the closing operation is performed again. In other words, the operation of turning on, cutting off, and turning on continues endlessly, and this is called a pumping operation.
The breaker command has priority, and the closing operation must not be performed again. If the closing operation is required again, it is necessary to first cancel the closing command and issue the closing command again to enable the closing operation. In particular, the input command time for manual operation or the like will be at least 1 second, but at this time, both the input and output operations are 0.1 seconds or less, and there is a possibility that a pumping operation will be performed during this 1 second.
(iii) しや断動作優先機能。これはしや断動作中、
投入指令が入つても、しや断完了後投入指令を
出さなければ投入動作をせず、逆に投入動作中
しや断指令が行つた時は、投入完了後素早くし
や断動作を行なう。この時しや断指令は投入動
作完了後に出さなくてもよい。(iii) Shrinkage priority function. This is during the cutting operation.
Even if a welding command is input, the welding operation will not be performed unless the welding command is issued after the shearing is completed, and conversely, if the welding cut-off command is issued during the welding operation, we will quickly perform the welding-off operation after the welding is complete. At this time, it is not necessary to issue the cut-off command after the closing operation is completed.
本発明は、以上の様な機能を達成するためにな
されたもので、補助シリンダーと補助接点と絞り
を液圧操作機構に付加することにより上記各種イ
ンタロツク機能を達成することができる液圧操作
装置を提供することを目的とするものである。 The present invention has been made to achieve the above functions, and is a hydraulic operating device that can achieve the various interlock functions described above by adding an auxiliary cylinder, an auxiliary contact, and a throttle to the hydraulic operating mechanism. The purpose is to provide the following.
以下本発明の一実施例を図面に示す実施例を参
照して説明する。 An embodiment of the present invention will be described below with reference to embodiments shown in the drawings.
第１図において、開閉器例えばしや断器の開閉
部１０は固定接点１１及び可動接点１２とからな
り、この可動接点１２は駆動部２０に連結されて
駆動される。駆動部２０は可動接点１２と連結さ
れるロツド２３を有する駆動ピストン２１と駆動
シリンダ２２とからなつている。駆動シリンダ２
２の反ロツド側のポート２４は、液圧操作部３０
に取りつけられ、この液圧操作部３０には排液タ
ンク３１が接続され、また駆動シリンダ２２のロ
ツド側にはポート２５を経てアキユムレータ３３
が接続されるとともに前記液圧操作部３０に対し
流路３２が形成される。更に、高圧液を供給する
ポンプユニツト４０は、アキユムレータ３３に圧
液を供給するものであり、又排液タンク３１内の
排液はポンプユニツト４０に回収され、作動液と
して使用されるようになつている。 In FIG. 1, an opening/closing part 10 of a switch, for example, a breaker, is composed of a fixed contact 11 and a movable contact 12, and the movable contact 12 is connected to a drive part 20 and driven. The drive part 20 consists of a drive piston 21 with a rod 23 connected to the movable contact 12 and a drive cylinder 22. Drive cylinder 2
The port 24 on the anti-rod side of No. 2 is connected to the hydraulic operation section 30.
A drain tank 31 is connected to this hydraulic pressure operation part 30, and an accumulator 33 is connected to the rod side of the drive cylinder 22 through a port 25.
are connected, and a flow path 32 is formed for the hydraulic operation section 30. Furthermore, the pump unit 40 for supplying high pressure liquid is for supplying pressure liquid to the accumulator 33, and the drained liquid in the drain tank 31 is collected by the pump unit 40 and used as a working liquid. ing.
第２図は本発明装置による液圧操作部３０と駆
動部２０の具体的構成例を示すものである。第３
図ａ〜ｃは第２図のＡ−Ａ断面を示し、ａは投
入、ｂはしや断開始、ｃはしや断状態であり、第
４図ａ〜ｄは第３図のＢ−Ｂ断面を示すもので、
ａは投入開始、ｂは投入終了直前、ｃはしや断開
始、ｄはしや断終了の各状態を示している。第２
図において、駆動部２０の駆動シリンダ２２の内
径部にロツド２３を固着した駆動ピストン２１が
摺動パツキン２６を介在して摺動可能に挿入され
ている。又駆動シリンダ２２の両端にはブロツク
３４，３５が固着され、また駆動シリンダ２２の
一端にはクツシヨンリング２７が摺動可能に取り
付けられ、復帰ばね２７ａによりブロツク３５に
押圧されている。駆動ピストン２１の一端には、
クツシヨンリング２７に対応したクツシヨンピス
トン２１ａ、更に他端にはクツシヨンピストン２
１ｂが設けてある。クツシヨンピストン２１ｂ
は、投入動作時に動作限近くで液圧操作部３０側
への流路３２につながるブロツク３４に設けられ
た孔３２ａを絞り、クツシヨン効果をもたせるも
のである。又ロツド２３はブロツク３４を摺動パ
ツキング３４ａを介在して液密に貫通している。
このブロツク３４は図示されないアキユムレータ
３３にロツド側のポート２５を介して接続されて
いる。 FIG. 2 shows a specific example of the structure of the hydraulic operation section 30 and the drive section 20 according to the device of the present invention. Third
Figures a to c show cross-sections taken along line A-A in Figure 2, where a is input, b is the start of cutting, and c is the cut-off state, and Figures 4 a to d are B-B in Figure 3. It shows a cross section.
"a" indicates the start of charging, "b" indicates the state immediately before the end of charging, "c" indicates the start of cutting, and "d" indicates the end of cutting. Second
In the figure, a drive piston 21 with a rod 23 fixed to the inner diameter of a drive cylinder 22 of a drive unit 20 is slidably inserted with a sliding packing 26 interposed therebetween. Further, blocks 34 and 35 are fixed to both ends of the drive cylinder 22, and a cushion ring 27 is slidably attached to one end of the drive cylinder 22, and is pressed against the block 35 by a return spring 27a. At one end of the drive piston 21,
A cushion piston 21a corresponding to the cushion ring 27, and a cushion piston 2 at the other end.
1b is provided. Cushion piston 21b
This is to provide a cushioning effect by constricting the hole 32a provided in the block 34 connected to the flow path 32 to the hydraulic operating section 30 near the operating limit during the closing operation. Further, the rod 23 penetrates the block 34 in a fluid-tight manner with a sliding packing 34a interposed therebetween.
This block 34 is connected to an accumulator 33 (not shown) via a port 25 on the rod side.
又ブロツク３４内に摺動パツキン３４ｂでシー
ルされたプランジヤ３７が圧縮ばね３８で押圧さ
れそのばね力がポート２５から駆動シリンダ２２
内に入つた液圧とつりあつており、加圧時はピス
トン２１の動作に対して支障なくピストン２１が
図示矢印Ｃ方向に移動し、投入動作限に達して液
圧が低下するとプランジヤ３７はクツシヨンピス
トン２１ｂのくぼみ２１ｃの上部にあたり、ばね
３８のばね力でくぼみ２１ｃにくい込む。 Also, a plunger 37 sealed within the block 34 by a sliding gasket 34b is pressed by a compression spring 38, and the spring force is transferred from the port 25 to the drive cylinder 22.
When pressurized, the piston 21 moves in the direction of arrow C in the figure without any hindrance to the operation of the piston 21, and when the closing operation limit is reached and the hydraulic pressure decreases, the plunger 37 It hits the upper part of the recess 21c of the cushion piston 21b, and is pushed into the recess 21c by the spring force of the spring 38.
液圧操作部３０はブロツク３５内に形成され、
駆動シリンダ２２の反ロツド側のポート２４と連
通する。またブロツク３５には排液タンク３１に
直接つながる排液路３６を有し、この排液路３６
は、ポート２４の液圧が高圧のとき液圧操作部３
０に設けられたしや断動作主弁４１により、その
背圧部４２に設けられた復帰圧縮ばね４３の復帰
力に抗してしや閉されるようになつている。 A hydraulic operating section 30 is formed within the block 35;
It communicates with the port 24 on the opposite side of the drive cylinder 22. Further, the block 35 has a drain passage 36 directly connected to the drain tank 31, and this drain passage 36
When the hydraulic pressure of the port 24 is high pressure, the hydraulic operating section 3
The main valve 41 provided at the back pressure section 42 is closed against the return force of a return compression spring 43 provided at the back pressure section 42 thereof.
一方第３図ａに示すようにしや断主弁４１に隣
接して投入動作主弁４４が設けられており、この
投入動作主弁４４は、第１図の流路３２、第２図
の穴３２ａを経て駆動シリンダ２２のロツド側と
つながる背圧部３２ｂとポート２４間をしや閉す
るものである。この場合、投入動作主弁４４には
ポート２４と背圧部４２間をしや閉するスプール
４４ａが固着されており、又背圧部３２ｂ側には
復帰圧縮ばね４５が設けられている。 On the other hand, as shown in FIG. 3a, a closing operation main valve 44 is provided adjacent to the main cutoff valve 41, and this closing operation main valve 44 is connected to the flow path 32 in FIG. This is to slightly close the port 24 and the back pressure portion 32b which is connected to the rod side of the drive cylinder 22 via the port 32a. In this case, a spool 44a that tightly closes between the port 24 and the back pressure section 42 is fixed to the closing operation main valve 44, and a return compression spring 45 is provided on the back pressure section 32b side.
又、第３図ａのＢ−Ｂ断面である第４図ａに示
すように、ブロツク３５内に形成された油圧切換
室に弁体４６ａ及び４６ｂから構成された切換弁
４６が設けられている。この油圧切換室の弁体４
６ａの背圧部４８側となる部分に摺動パツキン４
７が設けられている。 Further, as shown in FIG. 4a, which is a cross section taken along line B-B in FIG. . Valve body 4 of this hydraulic switching chamber
A sliding gasket 4 is attached to the part of the back pressure part 48 side of the part 6a.
7 is provided.
切換弁４６には弁体４６ｂから弁体４６ａの背
圧部４８側へ抜ける連通孔が設けらており、さら
に弁体４６ｂには油圧切換室壁面との間に形成さ
れる液室４９から連通孔に抜け絞りの為の小孔４
６ｃが設けられ、液が自由に出入りできるように
なつている。液室４９は、第３図の投入動作主弁
４４の背圧部３２ａと点線で図示した流路４９ａ
で連通しており、背圧部３２ｂから高圧油が供給
されるようになつている。又液室４９と連接して
形成される液室５０は、第３図ａのしや断動作主
弁４１の背圧部４２と点線で図示した流路５０ａ
で連通している。さらに油圧切換室は液室５０と
隣接する排液ポート５１と連通しており、切換弁
４６の弁体４６ａにより液室５０と排液ポート５
１との間の流路がしや閉可能となつている。又液
室４９と、液室５０は弁体４６ｂによりその間の
流路がしや閉可能となつている。さらに切換弁４
６の弁体４６ｂにはその背圧部５２と液室４９と
の間をスローリーク可能な絞り４６ｂで連通して
いる。 The switching valve 46 is provided with a communication hole that exits from the valve body 46b to the back pressure portion 48 side of the valve body 46a, and the valve body 46b is also provided with a communication hole that communicates with the liquid chamber 49 formed between the valve body 46b and the wall surface of the hydraulic switching chamber. Small hole 4 for drawing through the hole
6c is provided to allow liquid to freely enter and exit. The liquid chamber 49 is connected to a back pressure section 32a of the closing operation main valve 44 in FIG. 3 and a flow path 49a indicated by a dotted line.
The high-pressure oil is supplied from the back pressure section 32b. Further, a liquid chamber 50 formed in communication with the liquid chamber 49 is connected to the back pressure part 42 of the main valve 41 for shutoff operation in FIG.
It communicates with Further, the hydraulic switching chamber communicates with the liquid chamber 50 and the adjacent drain port 51, and the valve body 46a of the switching valve 46 connects the liquid chamber 50 and the drain port 5.
1, the flow path between the two can be closed. Further, the flow path between the liquid chamber 49 and the liquid chamber 50 can be closed by a valve body 46b. Furthermore, the switching valve 4
The back pressure portion 52 and the liquid chamber 49 are communicated with the valve body 46b of No. 6 through a throttle 46b capable of slow leakage.
切換弁４６の弁体４６ａの背圧部４８は流路５
３を通つて第２図のしや断電磁パイロツト弁５４
ａにつながつている。更に切換弁４６の弁体４６
ｂの背圧部５２は流路５５ａ、液室５６、流路５
５ｂを通つて第２図の投入電磁パイロツト弁５４
ｂにつながつている。 The back pressure portion 48 of the valve body 46a of the switching valve 46 is connected to the flow path 5.
3 through the shield solenoid pilot valve 54 of FIG.
It is connected to a. Furthermore, the valve body 46 of the switching valve 46
The back pressure section 52 of b includes a flow path 55a, a liquid chamber 56, and a flow path 5.
5b to the input solenoid pilot valve 54 in FIG.
connected to b.
更にブロツク３５内に液室５６と連通させて設
けられたスリーブ６４内を摺動するロツド部６０
ａを有する補助弁６０が設けられ、この補助弁６
０の背部周面に摺動パツキン５９が設けられてい
る。又補助弁６０の背圧部６１となる部所に補助
弁６０を液室５６方向へ押圧する復帰圧縮ばね６
２が設けられ、又背圧部６１には第２図のシリン
ダ２２背部のポート２４と連通する流路６３が形
成されている。 Furthermore, a rod portion 60 slides within a sleeve 64 provided within the block 35 and communicating with the liquid chamber 56.
An auxiliary valve 60 having a
A sliding gasket 59 is provided on the circumferential surface of the back of 0. Also, a return compression spring 6 is provided at a portion of the auxiliary valve 60 that becomes the back pressure portion 61 to press the auxiliary valve 60 toward the liquid chamber 56.
2 is provided, and a flow path 63 is formed in the back pressure section 61 to communicate with the port 24 at the back of the cylinder 22 shown in FIG.
補助弁６０のロツド部６０ａには液室５６とス
リーブ６４の背部側に形成された液室６５との間
を連通する小孔６６が設けられ、又スリーブ６４
には流路５５ａと液室５６間を連通する小孔６４
ａが設けられている。 The rod portion 60a of the auxiliary valve 60 is provided with a small hole 66 that communicates between the liquid chamber 56 and a liquid chamber 65 formed on the back side of the sleeve 64.
There is a small hole 64 communicating between the flow path 55a and the liquid chamber 56.
A is provided.
次に第５図は投入、又はしや断電磁パイロツト
弁５４ａ又は５４ｂの構成を詳細に示すものであ
る。 Next, FIG. 5 shows in detail the structure of the closing/closing electromagnetic pilot valve 54a or 54b.
ソレノイド６６ａはヨーク６７、アマチユア６
８、コイル６９、プランジヤ７０ａ、カバー７１
から構成されてベース８０に固着されており、コ
イル６９の励磁力によりアマチユア６８、プラン
ジヤ７０ａが動作可能となつている。更にアマチ
ユア６８の背部から矢印Ｘ方向に押圧可能なよう
にカバー７１の一部を切欠いてある。 Solenoid 66a is yoke 67, armature 6
8, coil 69, plunger 70a, cover 71
The armature 68 and the plunger 70a can be operated by the excitation force of the coil 69. Furthermore, a portion of the cover 71 is cut out so that it can be pressed in the direction of arrow X from the back of the armature 68.
一方ベース８０に固着されたピン８１ａのまわ
りを回動自在なレバー８２ａがあり、プランジヤ
７０ａが当接している。 On the other hand, there is a lever 82a that is rotatable around a pin 81a fixed to the base 80, and is in contact with the plunger 70a.
更にレバー８２ａとパイロツト弁８４はその一
端で当接し、レバー８２ａの回動によりパイロツ
ト弁８４は上下動可能となつている。 Further, the lever 82a and the pilot valve 84 are in contact with each other at one end, so that the pilot valve 84 can be moved up and down by rotation of the lever 82a.
パイロツト弁８４は復帰圧縮ばね８６でベース
８０内の弁座８０ａに押圧している。ブロツク３
５内の流路５３又は５５ｂと排液タンク３１に連
通している液室８７間はパイロツト弁８４、弁座
８０ａでその流路がしや閉されている。 The pilot valve 84 is pressed against a valve seat 80a in the base 80 by a return compression spring 86. Block 3
The flow path between the flow path 53 or 55b in the liquid discharge tank 5 and the liquid chamber 87 communicating with the drain tank 31 is closed by a pilot valve 84 and a valve seat 80a.
同じくベース８０に固着されたピン８１ｂのま
わりを回動自在なレバー８２ｂがあり、ソレノイ
ド６６ｂから出たプランジヤ７０ｂが当接してい
る。更にレバー８２ｂとパイロツト弁８４はその
一端が当接し、レバー８２ｂの回動によりパイロ
ツト弁８４は上下動可能となつている。 There is a lever 82b that is rotatable around a pin 81b that is also fixed to the base 80, and is in contact with a plunger 70b that comes out of a solenoid 66b. Further, one end of the lever 82b and the pilot valve 84 are in contact with each other, so that the pilot valve 84 can be moved up and down by rotation of the lever 82b.
次に上記のように構成された本発明装置の作用
について説明する。 Next, the operation of the apparatus of the present invention constructed as described above will be explained.
第１図及び第２図に於いて、第３図ｃに示すよ
うなしや断状態の場合、しや断動作主弁４１の復
帰により排液路３６が開となつているので、駆動
部２０の駆動シリンダ２２の反ロツド側ポート２
４は零又は低圧であり、又第３図ｃにおいて、し
や断動作主弁４１およびスプール４４ａの外周部
はパツキンがなく、スローリーク可能である為、
しや断動作主弁４１の背圧部４２はポート２４と
同圧で零又は低圧である。 In FIGS. 1 and 2, in the off or off state as shown in FIG. Anti-rod side port 2 of the drive cylinder 22 of
4 is zero or low pressure, and in FIG. 3c, the outer peripheries of the main valve 41 and the spool 44a have no seals and are capable of slow leakage.
The back pressure portion 42 of the main valve 41 has the same pressure as the port 24 and has zero or low pressure.
第４図ｄはしや断状態を示し、排液ポート５１
は開いており、液室５０は流路５０ａで第３図ｃ
のしや断動作主弁４１の背圧部４２と連通してお
り、零又は低圧である。 FIG. 4 d shows the cut-off state, and the drain port 51
is open, and the liquid chamber 50 is in the flow path 50a as shown in FIG. 3c.
It communicates with the back pressure part 42 of the main valve 41 and has zero or low pressure.
又補助弁６０の背圧部６１は流路６３でポート
２４と連通しており零又は低圧である。さらにし
や断、および投入電磁パイロツト弁５４ａ，５４
ｂが無励磁状態、すなわち動作指令のない場合に
は前記した部分以外全て高圧である。 Further, the back pressure portion 61 of the auxiliary valve 60 communicates with the port 24 through a flow path 63 and is at zero or low pressure. Furthermore, the solenoid pilot valves 54a and 54
When b is in a non-excited state, that is, when there is no operation command, all parts other than the above-mentioned parts are at high voltage.
このようなしや断状態にあるしや断器におい
て、投入指令が入つた場合の動作は次の如くな
る。第５図においてコイル６９が励磁され、アマ
チユア６８が吸収されると、プランジヤ７０ａを
突き出し、ピン８１ａのまわりをレバー８２ａを
回動させ、パイロツト弁８４を持ち上げ液室８７
と流路５３又は５５ｂとの間を開放する。これに
より第４図ｄにおいて、切換弁４６の背圧部５
２、流路５５ａ、液室５６、流路５５ｂ内の液は
第５図の液室８７を通つて、第１図の排液タンク
３１に排出する。したがつて、切換弁４６の背圧
部５２、補助弁６０の液室５６は低圧となり、背
圧部４８、液室４９の高圧状態にあるので、第４
図ａに示す如く切換弁４６は図示左方に移動し、
排液ポート５１を弁体４６ａにより閉じる。 When a closing command is input to the circuit breaker which is in such a disconnected or disconnected state, the operation is as follows. In FIG. 5, when the coil 69 is energized and the armature 68 is absorbed, the plunger 70a is pushed out and the lever 82a is rotated around the pin 81a to lift the pilot valve 84 and open the liquid chamber 87.
and the flow path 53 or 55b. As a result, in FIG. 4d, the back pressure section 5 of the switching valve 46
2. The liquid in the flow path 55a, the liquid chamber 56, and the flow path 55b is discharged to the drain tank 31 in FIG. 1 through the liquid chamber 87 in FIG. Therefore, the back pressure part 52 of the switching valve 46 and the liquid chamber 56 of the auxiliary valve 60 are at low pressure, and the back pressure part 48 and the liquid chamber 49 are in a high pressure state.
As shown in Figure a, the switching valve 46 moves to the left in the figure,
The drain port 51 is closed by the valve body 46a.
この時高圧液が第３図ｃの投入動作主弁４４の
背圧部３２ｂから流路４９ａを通して液室４９，
５０に供給され、さらに流路５０ａをへて第３図
ｃに示すしや断動作主弁４１の背圧部４２に圧液
が供給される。 At this time, high-pressure liquid passes from the back pressure part 32b of the input operation main valve 44 shown in FIG. 3c to the liquid chamber 49,
50, and is further supplied to the back pressure section 42 of the shingle cutoff main valve 41 shown in FIG. 3c through the flow path 50a.
したがつて、第３図ｂに示す如くしや断動作主
弁４１により排液路３６が閉じ、また投入動作主
弁４４はその背圧部３２ｂとポート２４間を仕切
る弁座径がスプール４４ａの外径より小さいため
に、その受圧面積差により開けられ、背圧部３２
ｂからポート２４へ高圧液が流入し、第２図の駆
動ピストン２１はＣ方向に移動する。同時に第３
図ｂにおいてポート２４に流入した圧液は第４図
ａの補助弁６０の流路６３をへて背圧部６１へ圧
液が供給され、液室５６と背圧部６１の圧力差お
よび圧縮ばね６２のばね力により補助弁６０は図
示左方へ移動し、第４図ｂに示す状態となる。こ
の時補助弁６０のロツド部６０ａは流路５５ａと
液室５６間をしや閉し、背圧部５２の液の流出は
小孔６４ａからの流出のみであり、小孔４６ｄが
小孔６４ａより大なる為背圧部５２の圧力は高圧
である液室４９内の圧力とほぼ同一となる。その
後第５図に示す投入電磁パイロツト弁の励磁が切
られると、パイロツト弁８４は圧縮ばね８６のば
ね力で液室８７とつながる流路５３又は５５ｂを
閉じる。すると、第４図ｂにおいて流路５５ａ、
液室５６は小孔６４ａからの圧液の流入により、
流路５５ａ、背圧部５２と同圧になり、又背圧部
５２は切換弁４６の弁体４６ｂに有する小孔４６
ｄからの圧液の流入により液室４９と同圧とな
り、結局流路５５ａ，５５ｂ、液室５６、背圧部
５２の全てが高圧になる。 Therefore, as shown in FIG. 3b, the drain passage 36 is closed by the combing/cutting operation main valve 41, and the closing operation main valve 44 has a valve seat diameter that separates the back pressure portion 32b and the port 24 from the spool 44a. Because it is smaller than the outer diameter of the back pressure section 32, it is opened due to the pressure receiving area difference.
High pressure liquid flows into the port 24 from b, and the drive piston 21 in FIG. 2 moves in the direction C. At the same time the third
In FIG. 4B, the pressure fluid that has flowed into the port 24 passes through the flow path 63 of the auxiliary valve 60 in FIG. The auxiliary valve 60 is moved to the left in the figure by the spring force of the spring 62, and enters the state shown in FIG. 4b. At this time, the rod portion 60a of the auxiliary valve 60 slightly closes the flow path 55a and the liquid chamber 56, and the liquid in the back pressure portion 52 only flows out from the small hole 64a, and the small hole 46d is connected to the small hole 64a. Because of this, the pressure in the back pressure section 52 is approximately the same as the pressure in the high pressure liquid chamber 49. Thereafter, when the excitation of the input electromagnetic pilot valve shown in FIG. Then, in FIG. 4b, the flow path 55a,
The liquid chamber 56 is caused by the inflow of pressurized liquid from the small hole 64a.
The flow path 55a has the same pressure as the back pressure part 52, and the back pressure part 52 has a small hole 46 in the valve body 46b of the switching valve 46.
Due to the inflow of pressurized liquid from d, the pressure becomes the same as that of the liquid chamber 49, and eventually all of the flow paths 55a, 55b, the liquid chamber 56, and the back pressure section 52 become high pressure.
第２図においてＣ方向に移動したクツシヨンピ
ストン２１ｂは、その動作限近くで孔３２ａを絞
り、第３図ａの背圧部３２ｂ、ポート２４への圧
液の流入を絞り、動作限でのクツシヨン効果をも
たせてある。投入動作後、背圧部３２ｂからポー
ト２４へ流入が止まる為、投入動作主弁４４のま
わりは全て高圧となる。 The cushion piston 21b, which has moved in the direction C in FIG. 2, throttles the hole 32a near its operating limit, restricts the inflow of pressurized fluid into the back pressure part 32b and port 24 in FIG. It has a cushion effect. After the closing operation, the flow from the back pressure portion 32b to the port 24 is stopped, so the pressure around the closing operation main valve 44 becomes high.
以上で投入動作は終り、次にしや断動作につい
て説明する。第４図ｂにおいて、第２図のしや断
電磁パイロツト弁５４ａの動作により、切換弁４
６の背圧部４８の圧液は流路５３を通つて第１図
の排液タンク３１へ排出する。この為背圧部４８
は低圧となり、又背圧部５２は、小孔４６ｄによ
り高圧である液室４９と連通している為高圧であ
る。 The closing operation is now complete, and the cutting operation will now be explained. In Fig. 4b, the switching valve 4 is
The pressure liquid in the back pressure section 48 of No. 6 is discharged to the drain tank 31 of FIG. 1 through the flow path 53. For this reason, the back pressure section 48
is at a low pressure, and the back pressure part 52 is at a high pressure because it communicates with the liquid chamber 49 at a high pressure through the small hole 46d.
この為切換弁４６は第４図ｃに示す如く右方向
へ移動する。 Therefore, the switching valve 46 moves to the right as shown in FIG. 4c.
これにより、排液ポート５１が開放されるので
第３図ａの投入動作主弁４４の背圧部４２の圧液
は流路５０ａ、液室５０をへて、排液ポート５１
へ排出される。この時しや断動作主弁４１の摺動
外径がポート２４の排液路３６間を仕切る弁座径
より大きい為、受圧面積差により第３図ｃに示す
如く、主弁４１は上方へ移動し、ポート２４内の
圧液は圧液路３６を経て第１図の排液タンク３１
へ排出される。この為駆動部２０の駆動ピストン
２１は第２図の矢印Ｃとは逆方向に移動する。又
第４図ｃにおいて、ポート２４と流路６３により
補助弁６０の背圧部６１は連通となつているの
で、ポート２４の圧力と同一に低圧又は零圧であ
る。又液室５６，６６は、小孔６８ａからの圧液
の流入により高圧となり、補助弁６０は第４図ｄ
に示す如く右方向へ移動する。 As a result, the liquid drain port 51 is opened, so that the pressure liquid in the back pressure part 42 of the input operation main valve 44 shown in FIG.
is discharged to. At this time, the sliding outer diameter of the disconnection main valve 41 is larger than the valve seat diameter that partitions the drain passage 36 of the port 24, so the main valve 41 moves upward due to the difference in pressure receiving area, as shown in Fig. 3c. The pressurized liquid in the port 24 passes through the pressure liquid path 36 to the drain tank 31 in FIG.
is discharged to. Therefore, the drive piston 21 of the drive unit 20 moves in the opposite direction to the arrow C in FIG. Also, in FIG. 4c, the back pressure section 61 of the auxiliary valve 60 is in communication with the port 24 through the flow path 63, so that it is at the same low pressure or zero pressure as the pressure at the port 24. Further, the liquid chambers 56, 66 become high pressure due to the inflow of pressurized liquid from the small hole 68a, and the auxiliary valve 60 is activated as shown in FIG.
Move to the right as shown.
しや断動作限において第２図のピストン２１、
クツシヨンピストン２１ａおよびクツシヨンリン
グ２７で囲まれたＥ部の液室内の液がポート２４
に流出する時、クツシヨンピストン２１ａの外周
部とクツシヨンリング２７の内周部の間の隙間を
通る為、その流れが絞られ、クツシヨン効果をも
つ。 The piston 21 in FIG.
The liquid in the liquid chamber of the E section surrounded by the cushion piston 21a and the cushion ring 27 is transferred to the port 24.
When it flows out, it passes through the gap between the outer periphery of the cushion piston 21a and the inner periphery of the cushion ring 27, so the flow is restricted and has a cushioning effect.
以上を要約して第６図に示す動作タイミングに
より説明すると次の如くである。ここで第６図ａ
は、投入パイロツト弁５４ｂの動き、ｂは切換弁
４６の弁体４６ｂの動き、ｃは同じく、弁体４６
ａの動き、ｄは投入動作主弁４４、ｅは駆動ピス
トン２１の動き、ｆは補助弁６０の動き、ｇはし
や断電磁パイロツト弁５４ａの動き、ｈはしや断
動作主弁４１の動き、ｉは背圧部５２の圧力、ｊ
は背圧部４８の圧力を示す。 The above will be summarized and explained using the operation timing shown in FIG. 6 as follows. Here, Figure 6a
is the movement of the input pilot valve 54b, b is the movement of the valve body 46b of the switching valve 46, and c is the movement of the valve body 46b.
d is the movement of the closing operation main valve 44, e is the movement of the driving piston 21, f is the movement of the auxiliary valve 60, g is the movement of the armature and disconnection electromagnetic pilot valve 54a, h is the armature and disconnection operation of the main valve 41. movement, i is the pressure of the back pressure part 52, j
indicates the pressure of the back pressure section 48.
すなわち、投入指令により投入パイロツト弁５
４ｂがa1からa2に動き開けられる。これにより第
４図の切換弁４６の背圧部５２の圧力はi1からi2
と低下して弁体４６ｂがb1からb2と開き、同時に
弁体４６ａはc1からc2と閉められる。更に第３図
において、投入動作主弁４４がd1からd2に開けら
れ、しや断動作主弁４１はh1からh2に排液路３６
への流出がロツクされる。ここで駆動ピストン２
１はポート２４へ圧液が供給される為、e1からe2
へ移動する。更に第４図において補助弁６０はf1
からf2に移動する。この時補助弁６０のシリンダ
ロツド６０ａにより、流路５５ａがしや閉され、
切換弁４６の背圧部５２は絞り孔４６ｄからの圧
液流入によりi3からi4と圧力が上昇する。 In other words, the closing pilot valve 5 is activated by the closing command.
4b is opened by moving from a 1 to a 2 . As a result, the pressure in the back pressure section 52 of the switching valve 46 in FIG. 4 changes from i 1 to i 2
The valve element 46b opens from b1 to b2 , and at the same time, the valve element 46a closes from c1 to c2 . Furthermore, in FIG. 3, the input operation main valve 44 is opened from d 1 to d 2 , and the drain operation main valve 41 is opened from h 1 to h 2 .
leakage to is locked. Here drive piston 2
1, pressure fluid is supplied to port 24, so e 1 to e 2
Move to. Further, in FIG. 4, the auxiliary valve 60 is f 1
Move from f 2 . At this time, the cylinder rod 60a of the auxiliary valve 60 closes the flow path 55a,
The pressure in the back pressure portion 52 of the switching valve 46 increases from i 3 to i 4 due to the inflow of pressure fluid from the throttle hole 46 d.
更にしや断指令により、しや断電磁パイロツト
弁はg1からg2に動き開けられる。これにより切換
弁４６の弁体４６ｂがb3からb4と閉じられ、弁体
４６ａはc3からc4と開けられる。この時背圧部４
８はj1からj2へ低下する。弁体４６ａが開けられ
る事で第３図のしや断動作主弁４１はh3からh4と
開けられる。同時に投入動作主弁はd3からd4とロ
ツク状態に変わる。これで駆動ピストン２１はポ
ート２４の圧液が、排液路３６へ排出される事に
より、e3からe4へ動く。以上で投入、しや断動作
が完了するが、ここで投入指令が続行している
と、第４図のシリンダロツド６０ａが動かず、投
入指令はロツクされている。投入指令を切り、投
入パイロツト弁をa3からd4へ切りにすると、シリ
ンダロツド６０ａは小孔６４ａから液室５６への
高圧液の流入と背圧部６１がしや断動作により低
圧となる事でf3からf4へ移動し投入指令可能とな
る。 Furthermore, the shear opening command causes the shear opening electromagnetic pilot valve to move from g 1 to g 2 and open. As a result, the valve body 46b of the switching valve 46 is closed from b3 to b4 , and the valve body 46a is opened from c3 to c4 . At this time, the back pressure section 4
8 decreases from j 1 to j 2 . By opening the valve body 46a, the main valve 41 for shutoff operation shown in FIG. 3 is opened from h3 to h4 . At the same time, the closing operation main valve changes from d3 to d4 and into a locked state. The drive piston 21 now moves from e 3 to e 4 as the pressure fluid in the port 24 is discharged to the drain passage 36 . The closing and shrunken operations are now complete, but if the closing command continues, the cylinder rod 60a in FIG. 4 will not move and the closing command will be locked. When the input command is turned off and the input pilot valve is turned from a3 to d4 , the pressure in the cylinder rod 60a becomes low due to high pressure liquid flowing into the liquid chamber 56 from the small hole 64a and the back pressure section 61 being closed. to move from f 3 to f 4 and input command can be issued.
以上で液圧操作装置の構成、作用について説明
したが、次に前述したしや断器の機能として特に
要求される（）ないし（）が満されているこ
とについて説明する。 The configuration and operation of the hydraulic pressure operating device have been explained above, and next, it will be explained that () to () particularly required for the function of the above-mentioned shunt disconnector are satisfied.
(1) ポンピング防止機能
第４図ｂは投入完了時の切換弁４６、補助弁
６０の位置が記してあるが、この時、投入、し
や断両方の指令によりパイロツト弁５４ａ，５
４ｂが開けられた時、背圧部５２はシリンダロ
ツド６０ａにより、その排出路が妨がれ、小孔
６４ａのみが排出路となる。切換弁４６内の小
孔４６ｄが小孔６４ａより比較的大きい為に、
背圧部５２はほとんどその液圧が低下しない
が、背圧部４８は流路５３を通つて排出される
為液圧が低下する。この為、切換弁４６は図示
右方向へ移動する。この時投入電磁パイロツト
弁５４ｂが開けられている時は、液室５６へ流
入する液は小孔６４ａのみである為低圧であ
り、第４図ｃに示す様に補助弁６０は右方向へ
移動しない。すなわち、投入電磁パイロツト弁
５４ａがロツクされた状態となる。これは投入
動作後、しや断動作した時、投入励磁継続中は
投入指令がロツクされ一度投入指令を切つて液
室５６の圧力が小孔６４からの液の流入により
高圧になる事で補助弁６０が図示右方向へ移動
し、第４図ｄに示す様に流路５５ａと液室５６
が連通して始めて投入動作可能となる。すなわ
ちこれがポンピング防止機能である。(1) Pumping prevention function Figure 4b shows the positions of the switching valve 46 and auxiliary valve 60 when the closing is completed.
4b is opened, the discharge path of the back pressure portion 52 is blocked by the cylinder rod 60a, leaving only the small hole 64a as a discharge path. Since the small hole 46d in the switching valve 46 is relatively larger than the small hole 64a,
Although the liquid pressure of the back pressure part 52 hardly decreases, the liquid pressure of the back pressure part 48 decreases because it is discharged through the flow path 53. Therefore, the switching valve 46 moves to the right in the figure. At this time, when the input electromagnetic pilot valve 54b is opened, the liquid flowing into the liquid chamber 56 is at a low pressure because it is only through the small hole 64a, and the auxiliary valve 60 moves to the right as shown in FIG. 4c. do not. That is, the closing electromagnetic pilot valve 54a is in a locked state. This is supported by the fact that when the closing operation occurs after the closing operation, the closing command is locked while the closing excitation continues, and once the closing command is turned off, the pressure in the liquid chamber 56 becomes high due to the inflow of liquid from the small hole 64. The valve 60 moves to the right in the figure, and as shown in FIG. 4d, the flow path 55a and the liquid chamber 56 are
Closing operation becomes possible only when the two are connected. In other words, this is the anti-pumping function.
(2) 同時励磁防止、しや断動作優先機能
図に示されていないが、投入動作限近くで動
作する補助接点を設け、その補助接点と継電器
の組合せにより、丁度駆動部２０の投入動作限
で始めてしや断動作可能にしておけば、しや断
器がしや断状態においては補助接点がオフの
為、しや断指令が与えられず、投入指令のみ可
能となり、又、投入動作限で投入指令およびし
や断指令のいずれも入つた場合、(1)のポンピン
グ防止機能で述べた様に補助弁６０が流路５５
ａを妨ぐため、投入指令がロツクされた状態と
なり、しや断指令のみ可能となる。すなわち、
これは同時励磁防止機能である。（補助接点に
関しては技術的困難さはないため省略）又投入
動作中しや断指令が入つた時前記補助接点が投
入動作限近くでオンとなりしや断動作可能とな
る。又投入指令続行中は前記(1)のポンピング防
止機能によりしや断動作完了後投入動作は行な
わない。さらに、しや断動作中、投入指令が入
つた時、第４図ｃに見られる如く補助弁６０の
ロツド６０ａは流路５５ａと液室５６間をしや
閉する為投入動作がロツクされ、補助弁６０が
右方向へ移動後、投入指令を出した時、投入動
作を行なう。これはしや断動作優先機能であ
る。(2) Simultaneous excitation prevention and shingle operation priority function Although not shown in the figure, an auxiliary contact that operates near the closing operation limit is provided, and the combination of the auxiliary contact and the relay allows the drive unit 20 to reach the closing operation limit. If you enable the shearing operation starting from When both the closing command and the shrunken command are received, the auxiliary valve 60 closes the flow path 55 as described in the pumping prevention function in (1).
In order to prevent this, the closing command is locked and only the cutting command is possible. That is,
This is a simultaneous excitation prevention function. (The auxiliary contact is omitted because there is no technical difficulty with it.) Also, when a clinching command is input during the closing operation, the auxiliary contact turns on near the closing operation limit, and the crinkling operation becomes possible. Also, while the closing command is continuing, the closing operation will not be performed after the shearing operation is completed due to the pumping prevention function described in (1) above. Further, when a closing command is input during the closing operation, the rod 60a of the auxiliary valve 60 closes the gap between the flow path 55a and the liquid chamber 56, so that the closing operation is locked. After the auxiliary valve 60 moves to the right, when a closing command is issued, a closing operation is performed. This is a function that gives priority to shunt operation.
以上説明した様に本発明によれば補助弁と絞り
を液圧操作機構に附加する事により上記各種イン
タロツク機能を達成することができる液圧操作装
置が提供できる。 As explained above, according to the present invention, by adding an auxiliary valve and a throttle to the hydraulic operating mechanism, it is possible to provide a hydraulic operating device that can achieve the various interlock functions described above.
第１図は本発明による液圧操作装置の概略を示
す構成図、第２図は本発明の一実施例を示す断面
図、第３図ａ乃至ｃは投入、しや断開始、しや断
状態をそれぞれ示す第２図のＡ−Ａ矢視断面図、
第４図ａ乃至ｄは投入開始、投入終了直前、しや
断開始、しや断終了の各状態をそれぞれ示す第３
図のＢ−Ｂ矢視断面図、第５図は同実施例におけ
る投入又はしや断電磁弁の構成を詳細に示す断面
図、第６図は同実施例の作用をタイムチヤートで
示す図である。
１０……しや断器の開閉部、１１……固定接
点、１２……可動接点、２０……駆動部、２１…
…駆動ピストン、２１ａ，２１ｂ……クツシヨン
ピストン、２１ｃ……くぼみ、２２……駆動シリ
ンダ、２３……ロツド、２４……ポート、２５…
…ポート、２６……摺動パツキン、２７……クツ
シヨンリング、３０……液圧操作部、３１……排
液タンク、３２……流路、３２ａ……孔、３２ｂ
……背圧部、３３……アキユムレータ、３４……
ブロツク、３４ａ，３４ｂ……摺動パツキン、３
５……ブロツク、３６……排液路、３７……プラ
ンジヤ、３８……圧縮ばね、４０……ポンプユニ
ツト、４１……しや断動作主弁、４２……背圧
部、４３……復帰圧縮ばね、４４……投入動作主
弁、４４ａ……スプール、４５……復帰圧縮ば
ね、４６……切換弁、４６ａ……弁、４６ｂ……
弁、４６ｃ……小孔、４６ｄ……絞り、４７……
摺動パツキン、４８……背圧部、４９……液圧、
４９ａ……流路、５０……液室、５０ａ……流
路、５１……排液ポート、５２……背圧部、５３
……流路、５４ａ……しや断電磁パイロツト弁、
５４ｂ……投入電磁パイロツト弁、５５ａ，５５
ｂ……流路、５６……液室、５９……摺動パツキ
ン、６０……補助弁、６０ａ……シリンダロツ
ド、６１……背圧部、６２……圧縮復ばね、６３
……流路、６４……スリーブ、６４ａ……小孔、
６６ａ，６６ｂ……ソレノイド、６７……ヨー
ク、６８……アマチユア、６９……コイル、７０
ａ，７０ｂ……プランジヤ、７１……カバー、８
０……ベース、８０ａ……弁座、８１ａ，８１ｂ
……ピン、８２ａ，８２ｂ……レバー、８４……
パイロツト弁、８６……復帰圧縮ばね、８７……
液室、８８……ばね。
Fig. 1 is a block diagram schematically showing a hydraulic operating device according to the present invention, Fig. 2 is a sectional view showing an embodiment of the present invention, and Figs. A sectional view taken along the line A-A in FIG. 2 showing the respective states,
Figures 4 a to d show the third state, respectively, at the start of charging, just before the end of charging, the start of shriveling, and the end of shriveling.
5 is a cross-sectional view showing in detail the structure of the closing/closing solenoid valve in the same embodiment, and FIG. 6 is a time chart showing the operation of the same embodiment. be. DESCRIPTION OF SYMBOLS 10... Opening/closing part of the breaker, 11... Fixed contact, 12... Movable contact, 20... Drive part, 21...
...Drive piston, 21a, 21b...Cushion piston, 21c...Indentation, 22...Drive cylinder, 23...Rod, 24...Port, 25...
... Port, 26 ... Sliding gasket, 27 ... Cushion ring, 30 ... Hydraulic pressure operation section, 31 ... Drainage tank, 32 ... Channel, 32a ... Hole, 32b
... Back pressure section, 33 ... Accumulator, 34 ...
Block, 34a, 34b...Sliding gasket, 3
5...Block, 36...Drainage path, 37...Plunger, 38...Compression spring, 40...Pump unit, 41...Sheath disconnection main valve, 42...Back pressure section, 43...Return Compression spring, 44... Closing operation main valve, 44a... Spool, 45... Return compression spring, 46... Switching valve, 46a... Valve, 46b...
Valve, 46c...small hole, 46d...diaphragm, 47...
Sliding gasket, 48...back pressure section, 49...hydraulic pressure,
49a... Channel, 50... Liquid chamber, 50a... Channel, 51... Drain port, 52... Back pressure section, 53
...Flow path, 54a...Shrinking electromagnetic pilot valve,
54b... Closing electromagnetic pilot valve, 55a, 55
b...Flow path, 56...Liquid chamber, 59...Sliding gasket, 60...Auxiliary valve, 60a...Cylinder rod, 61...Back pressure section, 62...Compression spring, 63
...Flow path, 64...Sleeve, 64a...Small hole,
66a, 66b...Solenoid, 67...Yoke, 68...Amateur, 69...Coil, 70
a, 70b...Plunger, 71...Cover, 8
0...Base, 80a...Valve seat, 81a, 81b
...Pin, 82a, 82b...Lever, 84...
Pilot valve, 86... Return compression spring, 87...
Liquid chamber, 88...spring.
Claims (1)
にそのロツド側ピストン面には常時圧力流体を作
用させ、又反ロツド側ピストン面には流体操作式
のしや断動作主弁、投入動作主弁により液圧が制
御された圧力流体を選択的に作用させ又は除去し
得る構成とし、且つ前記反ロツド側のピストン面
の油室につながる流路及び液体供給路と排出路を
有する液室内を一体的に直線移動して前記液体供
給路及び排出路の開閉を切換える２個の弁体から
なる切換弁を設けると共にこの切換弁に前記液体
供給路を通して供給される液体を各々の弁体の背
圧部に絞り孔を通して流出せしめる構成として前
記切換弁の一方の弁体の背圧を投入電磁パイロツ
ト弁で抜くことにより前記切換弁を動作させて前
記投入動作主弁による圧力流体の作用により前記
差動ピストンを投入動作させ、又逆に前記切換弁
の他方の弁体の背圧をしや断電磁パイロツト弁で
抜くことにより前記しや断動作主弁による前記反
ロツド側油室の圧力流体の作用により前記差動ピ
ストンをしや断動作させるようにした液圧操作装
置において、前記切換弁の一方の弁体の背圧部と
前記投入電磁パイロツト弁との間の流路に面して
形成された液室にロツドを有する補助弁を設け、
この補助弁の反ロツド側の背圧部を前記差動ピス
トンの駆動シリンダの反ロツド側の液室に連通さ
せ、投入動作時前記駆動シリンダの反ロツド側の
液室から前記補助弁の反ロツド側の背圧部に供給
される圧液で前記補助弁を前記投入電磁パイロツ
ト弁につながる前記切換弁の一方の弁体の背圧部
との流路を補助弁に有するロツドにより塞ぐよう
に駆動して前記投入電磁パイロツト弁による前記
切換弁の一方の弁体の背圧部の排液効果をロツク
可能にすると共に前記切換弁の一方の弁体の背圧
部と投入電磁パイロツト弁との間の流路とは別に
この流路につながる絞り孔を設けて前記補助弁に
より流路が塞がれたとき絞り効果を持たせたこと
を特徴とする液圧操作装置。1 A differential piston is used as a drive device, and pressure fluid is constantly applied to the piston surface on the rod side, and fluid is applied to the piston surface on the opposite rod side by a fluid-operated main valve for opening/closing operation and a main valve for closing/closing operation. The inside of the liquid chamber is integrally configured to be capable of selectively applying or removing a pressure fluid whose pressure is controlled, and has a flow path connected to the oil chamber on the piston surface on the anti-rod side, a liquid supply path, and a discharge path. A switching valve consisting of two valve bodies that move linearly to switch opening and closing of the liquid supply passage and the discharge passage is provided, and the switching valve is provided with a liquid supplied through the liquid supply passage to a back pressure portion of each valve body. With a configuration in which the flow is caused to flow through a throttle hole, the back pressure of one valve body of the switching valve is removed by a closing electromagnetic pilot valve to operate the switching valve, and the differential piston is moved by the action of pressure fluid from the closing operation main valve. The closing operation is performed, and conversely, the back pressure of the other valve body of the switching valve is released by the shielding solenoid pilot valve, and the pressure fluid in the oil chamber on the opposite side of the rod is released by the shielding operation main valve. In a hydraulic operating device that operates a differential piston in a gradual or disconnected manner, a liquid formed facing a flow path between a back pressure portion of one valve body of the switching valve and the closing electromagnetic pilot valve. An auxiliary valve with a rod is provided in the chamber,
The back pressure part on the side opposite to the rod of this auxiliary valve is communicated with the liquid chamber on the side opposite to the rod of the drive cylinder of the differential piston, and during the closing operation, the back pressure part on the side opposite to the rod of the auxiliary valve is connected to the liquid chamber on the side opposite to the rod of the drive cylinder. The auxiliary valve is driven by the pressure fluid supplied to the back pressure section on the side so that a flow path with the back pressure section of one valve body of the switching valve connected to the input electromagnetic pilot valve is closed by a rod included in the auxiliary valve. to lock the draining effect of the back pressure part of one valve element of the switching valve by the closing electromagnetic pilot valve, and to prevent the draining effect between the back pressure part of one valve element of the switching valve and the closing electromagnetic pilot valve. A hydraulic operating device characterized in that a throttle hole connected to the flow path is provided separately from the flow path to provide a throttling effect when the flow path is blocked by the auxiliary valve.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18889680A JPS57111916A (en) | 1980-12-26 | 1980-12-26 | Hydraulic actuator |
| US06/329,435 US4516472A (en) | 1980-12-26 | 1981-12-10 | Hydraulically-operated breaking device |
| CH8212/81A CH656029A5 (en) | 1980-12-26 | 1981-12-22 | HYDRAULICALLY OPERATED SWITCH-OFF DEVICE FOR AN ELECTRICAL SWITCHGEAR. |
| DE3150842A DE3150842C2 (en) | 1980-12-26 | 1981-12-22 | Hydraulically operated switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18889680A JPS57111916A (en) | 1980-12-26 | 1980-12-26 | Hydraulic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57111916A JPS57111916A (en) | 1982-07-12 |
| JPS64773B2 true JPS64773B2 (en) | 1989-01-09 |
Family
ID=16231771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18889680A Granted JPS57111916A (en) | 1980-12-26 | 1980-12-26 | Hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57111916A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016006330A (en) * | 2014-06-20 | 2016-01-14 | 株式会社東芝 | Hydraulic operation device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5632727B2 (en) * | 1973-02-12 | 1981-07-29 | ||
| JPS599146B2 (en) * | 1978-07-07 | 1984-02-29 | 森下製薬株式会社 | Growth promoter for livestock and poultry |
-
1980
- 1980-12-26 JP JP18889680A patent/JPS57111916A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016006330A (en) * | 2014-06-20 | 2016-01-14 | 株式会社東芝 | Hydraulic operation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57111916A (en) | 1982-07-12 |
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