JPH0718084U - Manifold type valve device - Google Patents
Manifold type valve deviceInfo
- Publication number
- JPH0718084U JPH0718084U JP5228493U JP5228493U JPH0718084U JP H0718084 U JPH0718084 U JP H0718084U JP 5228493 U JP5228493 U JP 5228493U JP 5228493 U JP5228493 U JP 5228493U JP H0718084 U JPH0718084 U JP H0718084U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- pilot
- valve
- pressure
- manifold
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 67
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Control Of Fluid Pressure (AREA)
- Valve Housings (AREA)
- Fluid-Driven Valves (AREA)
Abstract
(57)【要約】
【目的】 パイロット電磁弁へ供給するパイロット液体
の圧力を一定に制御してアクチュエータの良好な作動制
御が得られるようにしたマニホールド形弁装置を提供す
ることを目的とする。
【構成】 供給通路５と戻り通路７とを長手方向へ延在
して内部に形成したマニホールド１を有し、マニホール
ド１の内部に、上面に積層設置したパイロット操作式の
切換弁を作動するためのパイロット液体を流すパイロッ
ト通路２０を連通孔２１にて供給通路５と連通して設
け、この連通孔２１内に筒状のフィルタ２３とこのフィ
ルタ２３にてろ過されたパイロット液体の圧力を減圧す
る減圧弁２２とを設けている。
(57) [Summary] [Object] An object of the present invention is to provide a manifold type valve device in which the pressure of the pilot liquid supplied to the pilot solenoid valve is controlled to be constant so that good operation control of the actuator can be obtained. [Structure] A manifold 1 having a supply passage 5 and a return passage 7 extending in the longitudinal direction and formed therein is provided, and for operating a pilot-operated switching valve stacked on the upper surface inside the manifold 1. The pilot passage 20 for flowing the pilot liquid is provided in communication with the supply passage 5 through the communication hole 21, and the pressure of the cylindrical filter 23 and the pilot liquid filtered by the filter 23 is reduced in the communication hole 21. A pressure reducing valve 22 is provided.
Description
【０００１】[0001]
本考案は、パイロット操作式の切換弁をマニホールドに有した積層部に積層配 置すると共に、この切換弁をパイロット操作するためのパイロット電磁弁をマニ ホールドに別途設置したマニホールド形弁装置に関する。 The present invention relates to a manifold type valve device in which pilot-operated switching valves are stacked and arranged in a stacking portion having a manifold, and a pilot solenoid valve for pilot-operating this switching valve is separately installed in a manifold.
【０００２】[0002]
従来、この種のマニホールド形弁装置は実開平２−１２７８７５号公報の特に 第２図に記載されたものがある。このものは、作動液体の供給通路と戻り通路を 内部に形成したマニホールドの上面に有する積層部にパイロット操作式の切換弁 を積層配置し、このマニホールドに別途設置したパイロット電磁弁により供給通 路を流れる作動液体の一部をパイロット液体として用いて前記切換弁をパイロッ ト操作し、アクチュエータの作動制御が得られるよう設けている。 Conventionally, a manifold type valve device of this type is described in Japanese Utility Model Laid-Open No. 127875/1990, particularly in FIG. This product has a pilot-operated switching valve stacked in a stacking part on the top surface of a manifold that has a supply passage and a return passage for the working liquid inside, and a pilot solenoid valve separately installed in this manifold to connect the supply passage. A part of the flowing working liquid is used as a pilot liquid to pilot-operate the switching valve, so that operation control of the actuator can be obtained.
【０００３】[0003]
ところが、この構成では、切換弁を作動するパイロット液体をパイロット電磁 弁ごとに供給通路から直接流入するよう設けており、パイロット液体の圧力は作 動液体の圧力とほぼ同圧になるため、アクチュエータの使用目的に応じて作動液 体の圧力を高圧に設定して使用すると、パイロット液体の圧力も同時にその圧力 に変更される。このため、作動液体の圧力を高めた分切換弁のパイロット操作の 際に切換弁の切り換え作動が急激に行なわれるようになり、この切換弁の急激な 切り換え作動によって作動液体中に発生するサージ圧でアクチュエータを急作動 させてしまうという問題点があった。 However, in this configuration, the pilot liquid that operates the switching valve is provided so as to flow directly from the supply passage for each pilot solenoid valve, and the pressure of the pilot liquid is almost the same as the pressure of the working liquid, so that the actuator If the working fluid pressure is set to a high pressure according to the purpose of use, the pilot fluid pressure is also changed to that pressure at the same time. Therefore, the switching operation of the switching valve is suddenly performed during the pilot operation of the switching valve by increasing the pressure of the hydraulic fluid, and the surge pressure generated in the hydraulic fluid is caused by the rapid switching operation of the switching valve. There was a problem that the actuator was suddenly activated by.
【０００４】 本考案は、このような問題点を解決するもので、パイロット電磁弁へ供給する パイロット液体の圧力を一定に制御してアクチュエータの良好な作動制御が得ら れるようにしたマニホールド形弁装置を提供することを目的とする。The present invention solves such a problem, and a manifold type valve in which the pressure of the pilot liquid supplied to the pilot solenoid valve is controlled to be constant so that good operation control of the actuator can be obtained. The purpose is to provide a device.
【０００５】[0005]
このため本考案は、圧力源へ接続する供給通路と貯槽へ接続する戻り通路とを 長手方向へ延在して内部に形成し、この供給通路と戻り通路にそれぞれ連通の供 給路および戻り路とアクチュエータ側へ接続する負荷通路に連通の負荷路とパイ ロット路とを開口した積層部を長手方向に隔てて複数個上面に設けたマニホール ドを有し、マニホールドの積層部にパイロット操作式の切換弁を積層設置すると 共に、この切換弁をパイロット操作するパイロット電磁弁を積層部に対し別途設 置してマニホールドに設け、切換弁を作動するためのパイロット液体を流すパイ ロット通路を各積層部のパイロット路とパイロット電磁弁を介し連通するよう長 手方向へ延在してマニホールド内部に形成し、供給通路とパイロット通路とを連 通する連通孔をマニホールドに穿設し、供給通路より連通孔へ流入するパイロッ ト液体の圧力を減圧する減圧弁を連通孔へ螺入して設け、パイロット液体中に混 入の異物をろ過する筒状のフィルタを減圧弁の供給通路側の連通孔内に設け、減 圧弁はフィルタにてろ過されたパイロット液体を減圧弁本体に穿設された弁孔へ 導く入口通路と弁孔より流出するパイロット液体をパイロット通路へ導く出口通 路とを備え、さらに前記弁孔内に主弁スプールを移動自在に収容し、この主弁ス プールを調圧ばねのばね力により入口通路と出口通路間を全開連通するノーマル 位置へ付勢して設け、この調圧ばねを設置するばね室と入口通路より弁孔内へ流 入したパイロット液体を調圧ばねのばね力に抗するよう主弁スプールに作用させ る作用室とを主弁スプールの両端側に形成し、この作用室を入口通路と連通する と共にばね室を戻り通路と連通して設け、主弁スプール内には作用室を絞りを介 してばね室と連通する流通路を設け、作用室に作用するパイロット液体の圧力に より主弁スプールがノーマル位置から移動する移動量に応じて入口通路より弁孔 内へ流入するパイロット液体を出口通路へ絞り流通するよう絞り通路を主弁スプ ールに設けている。 Therefore, according to the present invention, a supply passage connected to the pressure source and a return passage connected to the storage tank are formed in the inside by extending in the longitudinal direction, and the supply passage and the return passage are respectively connected to the supply passage and the return passage. The manifold has multiple manifolds on the upper surface that are separated from each other in the longitudinal direction by opening the load path and the pilot path that are connected to the load path connected to the actuator and the pilot path. In addition to installing the switching valve in a stack, a pilot solenoid valve for piloting this switching valve is installed separately in the stacking part and provided in the manifold, and pilot passages for flowing the pilot liquid for operating the switching valve are provided in each stacking part. Is formed inside the manifold by extending in the longitudinal direction so as to communicate with the pilot passage via the pilot solenoid valve, and a communication hole that connects the supply passage and the pilot passage is formed. A pressure reducing valve for reducing the pressure of the pilot liquid flowing into the communication hole from the supply passage is screwed into the communication hole to provide a cylindrical filter for filtering foreign matter mixed in the pilot liquid. Provided in the communication hole on the supply passage side of the pressure reducing valve, the pressure reducing valve introduces the pilot liquid filtered by the filter to the valve hole formed in the pressure reducing valve main body and the pilot liquid flowing out of the valve hole from the pilot passage. A normal position in which the main valve spool is movably accommodated in the valve hole, and the main valve spool is fully opened and communicated between the inlet passage and the outlet passage by the spring force of the pressure regulating spring. And a working chamber that acts on the main valve spool so as to resist the spring force of the pressure regulating spring against the pilot liquid flowing into the valve hole from the inlet passage. Of the main valve spool It is formed on the end side, and this working chamber communicates with the inlet passage, the spring chamber communicates with the return passage, and the main valve spool has a flow passage communicating the working chamber with the spring chamber through the throttle. , Main valve in the throttle passage so that pilot liquid flowing from the inlet passage into the valve hole is squeezed to the outlet passage according to the amount of movement of the main valve spool from the normal position by the pressure of pilot liquid acting on the working chamber. It is provided in the spool.
【０００６】[0006]
このような本考案の構成において、供給通路より連通孔へ流入するパイロット 液体は連通孔内に設けた単一のフィルタによって混入の異物がろ過される。この パイロット液体は減圧弁の入口通路より作用室へ導かれ、主弁スプールを調圧ば ねのばね力に抗する方向へ押圧する。この時前記パイロット液体は主弁スプール 内に設けた流通路をばね室へ流通し流通路に有する絞り前後に生じる差圧により 主弁スプールに調圧ばねのばね力が作用する方向へ作用力を生ぜしめる。主弁ス プールは、作用室へ導かれたパイロット液体の圧力により主弁スプールを押圧す る力が調圧ばねのばね力と前記作用力とに平衡するよう弁孔内をノーマル位置よ り移動し、主弁スプールのノーマル位置からの移動量に応じて入口通路より出口 通路へ流出するパイロット液体の流量が絞り通路により絞り制御される。このた め入口通路と出口通路との間に生じるパイロット液体の差圧により出口通路より パイロット電磁弁へ供給するパイロット液体の圧力を一定に制御してアクチュエ ータの良好な作動制御を得ることができる。 In the structure of the present invention, the foreign matter mixed in the pilot liquid flowing from the supply passage into the communication hole is filtered by the single filter provided in the communication hole. This pilot liquid is introduced into the working chamber through the inlet passage of the pressure reducing valve and presses the main valve spool in the direction against the spring force of the pressure adjusting spring. At this time, the pilot liquid flows through the flow passage provided in the main valve spool to the spring chamber, and the differential pressure generated before and after the throttle in the flow passage causes the acting force in the direction in which the spring force of the pressure regulating spring acts on the main valve spool. Give birth. The main valve spool moves from the normal position in the valve hole so that the force that presses the main valve spool due to the pressure of the pilot liquid introduced into the working chamber balances the spring force of the pressure regulating spring and the acting force. However, the flow rate of the pilot liquid flowing from the inlet passage to the outlet passage is controlled by the throttle passage according to the amount of movement of the main valve spool from the normal position. Therefore, the pressure of the pilot liquid supplied from the outlet passage to the pilot solenoid valve is controlled to be constant by the differential pressure of the pilot liquid generated between the inlet passage and the outlet passage, and good operation control of the actuator can be obtained. it can.
【０００７】[0007]
以下、本考案の一実施例を図面に基づいて説明する。 図１ないし図４において、１は弁装置の主要旨と成るマニホールドを示し、上 部に長手方向へ沿って隆起部２が形成され、これより下部の幅広部３と共に長手 方向と直交する断面形状を凸状の如き形状に有している。そして、マニホールド １はその幅広部３において、圧力源４へ接続する供給通路５と貯槽６へ接続する 戻り通路７とを長手方向へ延在して内部に形成していると共に、アクチュエータ ８側へ接続する複数の負荷通路９Ａ、９Ｂ、…を長手方向に沿った側面に開口し 内部に形成している。１０はマニホールド１の隆起部２上面に形成した積層部で 、前記供給通路５および戻り通路７、負荷通路９Ａ、９Ｂにそれぞれ連通の供給 路１１、戻り路１２、負荷路１３Ａ、１３Ｂとパイロット路１４とを開口して設 け、マニホールド１の長手方向へ隔てて三個有している。この積層部１０にはパ イロット操作式の切換弁１５を最上段に位置し逆止弁付流量調整弁１６などの弁 を適宜積層設置してアクチュエータ８の作動回路を構成するよう設けている。 An embodiment of the present invention will be described below with reference to the drawings. 1 to 4, reference numeral 1 denotes a manifold, which is a main feature of the valve device, in which a ridge 2 is formed in the upper part along the longitudinal direction, and a cross-sectional shape which is orthogonal to the longitudinal direction together with a wide part 3 below the ridge. Has a convex shape. In the wide portion 3 of the manifold 1, a supply passage 5 connected to the pressure source 4 and a return passage 7 connected to the storage tank 6 are formed in the inside by extending in the longitudinal direction, and are provided to the actuator 8 side. A plurality of load passages 9A, 9B, ... Connected to each other are formed in the inside by opening on the side surface along the longitudinal direction. Reference numeral 10 denotes a laminated portion formed on the upper surface of the raised portion 2 of the manifold 1, and includes a supply passage 11, a return passage 12, load passages 13A and 13B, and a pilot passage which communicate with the supply passage 5 and the return passage 7 and the load passages 9A and 9B, respectively. 14 and 14 are provided so as to be open, and three are provided at a distance in the longitudinal direction of the manifold 1. In this stacking portion 10, a pilot operated switching valve 15 is located at the uppermost stage, and valves such as a flow control valve with a check valve 16 are appropriately stacked and provided so as to constitute an operating circuit of the actuator 8.
【０００８】 １７Ａ、１７Ｂは切換弁１５をパイロット操作するためのパイロット電磁弁で 、積層部１０に対してそれぞれ一対づつマニホールド１の隆起部２側面に別途設 置しており、ソレノイド１８の励磁・非励磁によりスプール１９が軸方向移動し て切換弁１５のパイロット室側にパイロット液体を供給したり切換弁１５のパイ ロット室内の液体を貯槽６側に排出したりできるよう設けている。２０はパイロ ット液体を流すためのパイロット通路で、各積層部１０のパイロット路１４とパ イロット電磁弁１７Ａ、１７Ｂを介しそれぞれ連通するよう長手方向へ延在して マニホールド１の内部に形成している。Reference numerals 17 A and 17 B denote pilot solenoid valves for pilot-operating the switching valve 15, which are separately installed on the side surface of the raised portion 2 of the manifold 1 in pairs with respect to the laminated portion 10, respectively. The spool 19 is axially moved by non-excitation to supply the pilot liquid to the pilot chamber side of the switching valve 15 and to discharge the liquid in the pilot chamber of the switching valve 15 to the storage tank 6 side. Reference numeral 20 denotes a pilot passage for flowing the pilot liquid, which is formed inside the manifold 1 so as to extend in the longitudinal direction so as to communicate with the pilot passage 14 of each laminated portion 10 via pilot solenoid valves 17A and 17B. ing.
【０００９】 ２１は供給通路５とパイロット通路２０とを連通する連通孔で、マニホールド １の隆起部２より幅広部３へ向けて穿設している。２２は供給通路５より連通孔 ２１へ流入するパイロット液体の圧力を減圧する減圧弁で、マニホールド１の隆 起部２より連通孔２１内へ螺入して設けている。２３は焼結金属から成型した筒 状のフィルタで、減圧弁２２の供給通路５側の連通孔２１内に減圧弁２２へ固着 して設けている。２４は開閉弁で、ばね部材２５のばね力にて弁体２６をフィル タ２３の一方の開口より嵌入した弁部材２７に押圧して設け、弁部材２７に穿設 した通孔２８を閉塞するよう設けている。この開閉弁２４の弁体２６は、フィル タ２３の目詰まりにより弁体２６の前後に生じる差圧によってばね部材２５のば ね力に抗して開作動するよう設けている。２９は弁体２６の開作動時にパイロッ ト液体を通孔２８よりフィルタ２３内部へ流通する迂回通路で、弁体２６の外周 面と弁部材２７の内周面とで所定の断面積を得るよう形成している。Reference numeral 21 is a communication hole that connects the supply passage 5 and the pilot passage 20 to each other, and is formed from the raised portion 2 of the manifold 1 toward the wide portion 3. Reference numeral 22 is a pressure reducing valve for reducing the pressure of the pilot liquid flowing into the communication hole 21 from the supply passage 5, and is provided by being screwed into the communication hole 21 from the raised portion 2 of the manifold 1. A cylindrical filter 23 made of sintered metal is fixed to the pressure reducing valve 22 in the communication hole 21 on the supply passage 5 side of the pressure reducing valve 22. An on-off valve 24 is provided by pressing the valve body 26 against the valve member 27 fitted through one opening of the filter 23 by the spring force of the spring member 25, and closing the through hole 28 formed in the valve member 27. Is provided. The valve element 26 of the on-off valve 24 is provided so as to be opened against the spring force of the spring member 25 due to the differential pressure generated before and after the valve element 26 due to the clogging of the filter 23. Reference numeral 29 denotes a bypass passage through which the pilot liquid flows into the filter 23 through the through hole 28 when the valve body 26 is opened so that a predetermined cross-sectional area can be obtained between the outer peripheral surface of the valve body 26 and the inner peripheral surface of the valve member 27. Is forming.
【００１０】 ３０は主弁スプールで、減圧弁２２の減圧弁本体３１に穿設された弁孔３２内 に移動可能に収容し、弁孔３２の一方の開口より嵌入して設けた閉塞部材３３に 当接してその移動量が規制されるよう設けている。３４は栓部材で、弁孔３２の 他方の開口を閉塞するよう減圧弁本体３１に螺合して設けている。３５は調圧ば ねで、ばね力にて主弁スプール３０を閉塞部材３３に当接するよう付勢し主弁ス プール３０のノーマル位置を得るよう設けている。３６は調圧ばね３５を設置す るばね室で、主弁スプール３０の一端側に弁孔３２の内周面と主弁スプール３０ と栓部材３４とで囲んで形成している。３７は排出通路で、ばね室３６と戻り路 １２とを連通するよう減圧弁本体３１に穿設している。３８は作用室で、主弁ス プール３０の他端側に弁孔３２の内周面と主弁スプール３０と閉塞部材３３とで 囲んで形成している。３９は流通路で、主弁スプール３０の軸方向に作用室３８ を絞り４０を介してばね室３６と連通するよう設けている。４１は絞り通路、４ ２は流路で、それぞれ流通路３９と直交する方向に主弁スプール３０の外周に開 口して設けている。４３は減圧弁本体３１に穿設した出口通路で、主弁スプール ３０の流路４２をパイロット通路２０と連通するよう減圧弁本体３１の弁孔３２ に開口して設けている。４４は入口通路で、閉塞部材３３に設けられた第１通路 ４５と減圧弁本体３１外周と連通孔２１とで囲まれる外周路４６と外周路４６と 第１通路４５とを連通する第２通路４７と外周路４６を弁孔３２へ開口する第３ 通路４８とから成り、主弁スプール３０のノーマル位置において出口通路４３と 全開連通するよう第３通路４８の弁孔３２への開口が絞り通路４１の開口と対向 配置され、主弁スプール３０の移動量に応じて絞り通路４１の主弁スプール３０ の外周に有する開口が絞り制御されるよう設けている。A main valve spool 30 is movably accommodated in a valve hole 32 formed in the pressure reducing valve main body 31 of the pressure reducing valve 22, and is provided with a closing member 33 fitted into one opening of the valve hole 32. It is provided so as to come into contact with and regulate the movement amount. Reference numeral 34 denotes a plug member, which is screwed to the pressure reducing valve main body 31 so as to close the other opening of the valve hole 32. Reference numeral 35 denotes a pressure adjusting spring, which is provided so as to urge the main valve spool 30 to contact the closing member 33 by a spring force so as to obtain the normal position of the main valve spool 30. Reference numeral 36 denotes a spring chamber in which the pressure adjusting spring 35 is installed, and is formed on one end side of the main valve spool 30 so as to be surrounded by the inner peripheral surface of the valve hole 32, the main valve spool 30 and the plug member 34. A discharge passage 37 is formed in the pressure reducing valve main body 31 so as to connect the spring chamber 36 and the return passage 12 with each other. A working chamber 38 is formed on the other end side of the main valve spool 30 so as to be surrounded by the inner peripheral surface of the valve hole 32, the main valve spool 30, and the closing member 33. A flow passage 39 is provided so that the working chamber 38 is communicated with the spring chamber 36 via the throttle 40 in the axial direction of the main valve spool 30. Reference numeral 41 is a throttle passage, and 42 is a passage, which are provided so as to be opened on the outer circumference of the main valve spool 30 in a direction orthogonal to the flow passage 39. An outlet passage 43 is formed in the pressure reducing valve main body 31 and is provided in the valve hole 32 of the pressure reducing valve main body 31 so that the flow passage 42 of the main valve spool 30 communicates with the pilot passage 20. Reference numeral 44 denotes an inlet passage, which is a first passage 45 provided in the closing member 33, an outer peripheral passage 46 surrounded by the outer periphery of the pressure reducing valve main body 31 and the communication hole 21, and a second passage connecting the outer peripheral passage 46 and the first passage 45. 47 and a third passage 48 that opens the outer peripheral passage 46 to the valve hole 32, and the opening of the third passage 48 to the valve hole 32 is such that it is in full communication with the outlet passage 43 at the normal position of the main valve spool 30. The opening provided on the outer periphery of the main valve spool 30 of the throttle passage 41 is provided so as to be controlled so as to be opposed to the opening of the main valve spool 30 in accordance with the amount of movement of the main valve spool 30.
【００１１】 ４９はパイロット電磁弁１７Ａ、１７Ｂのソレノイド１８を電気接続するため のコネクタ部材、５０は端子箱で、ソレノイド１８や電源側からの配線を結線す る端子台を内蔵しマニホールド１の上面に設置している。Reference numeral 49 is a connector member for electrically connecting the solenoids 18 of the pilot solenoid valves 17 A and 17 B, and 50 is a terminal box, which has a built-in terminal block for connecting the solenoid 18 and wiring from the power supply side and has an upper surface of the manifold 1. It is installed in.
【００１２】 次にかかる構成の作動を説明する。ソレノイド１８が非励磁の図示状態におい て、パイロット電磁弁１７Ａ、１７Ｂは切換弁１５のパイロット室側をパイロッ ト路１４、戻り通路１２を介し貯槽６にそれぞれ連通しており、アクチュエータ ８は切換弁１５を介し供給流路５の作動液体が図示右作用室に流入されて始動端 に停止している。Next, the operation of this configuration will be described. In the illustrated state in which the solenoid 18 is not excited, the pilot solenoid valves 17A and 17B communicate with the storage chamber 6 through the pilot passage 14 and the return passage 12 on the pilot chamber side of the switching valve 15, and the actuator 8 switches the switching valve. The working liquid in the supply flow path 5 flows into the right working chamber in the figure via 15 and stops at the starting end.
【００１３】 この状態より、いま、第１の積層部１０すなわち図１の左端側積層部にかかる パイロット電磁弁１７Ｂのソレノイド１８を励磁してスプール１９を移動すると 、パイロット通路２０内のパイロット液体がパイロット路１４を介し切換弁１５ へ供給され、切換弁１５は作動液体の流れ方向を切換えるよう右切換位置にパイ ロット操作されてアクチュエータ８を前進作動する。そして、パイロット電磁弁 １７Ｂのソレノイド１８を非励磁にすると、パイロット電磁弁１７Ｂはスプール １９が元位置に復帰移動して切換弁１５のパイロット室側を貯槽６側へ切換え連 通する。切換弁１５は内蔵するデテント機構によって操作位置のまま保持されア クチュエータ８を前進端に作動し続ける。また、アクチュエータ８を復帰作動す るには、パイロット電磁弁１７Ａを作動することにより切換弁１５はパイロット 液体が供給されて左切換位置にパイロット操作され、アクチュエータ８は元位置 に復帰作動する。さらに、隣接する第２の積層部１０にかかる切換弁１５のパイ ロット操作も同様に行うことで作動することができる。From this state, when the solenoid 18 of the pilot solenoid valve 17B applied to the first stacking portion 10, that is, the stacking portion on the left end side in FIG. 1 is excited to move the spool 19, the pilot liquid in the pilot passage 20 is discharged. It is supplied to the switching valve 15 via the pilot passage 14, and the switching valve 15 is pilot operated to the right switching position so as to switch the flow direction of the working liquid, and the actuator 8 is operated forward. Then, when the solenoid 18 of the pilot solenoid valve 17B is de-excited, the spool 19 of the pilot solenoid valve 17B returns to its original position and the pilot chamber side of the switching valve 15 is switched to the storage tank 6 side for communication. The switching valve 15 is held in the operating position by the built-in detent mechanism, and the actuator 8 continues to operate at the forward end. In order to return the actuator 8, the pilot solenoid valve 17A is operated to supply the pilot liquid to the switching valve 15 and the pilot is operated to the left switching position, and the actuator 8 is returned to its original position. Further, the pilot operation of the switching valve 15 for the adjacent second laminated portion 10 can be operated by performing the same pilot operation.
【００１４】 この作動において、供給通路５から連通孔２１へ流入するパイロット液体は連 通孔２１内に設けた単一のフィルタ２３によって混入の異物がろ過され、パイロ ット電磁弁１７Ａ、１７Ｂおよび切換弁１５は異物による誤作動の発生が阻止さ れて良好に作動する。このパイロット液体は減圧弁２２の入口通路４４より流通 路３９を流通し作用室３８へ導かれ、主弁スプール３０を調圧ばね３５のばね力 に抗する方向へ押圧する。この時前記パイロット液体は流通路３９をばね室３６ へ流通し流通路３９に有する絞り４０前後に生じる差圧により主弁スプール３０ に調圧ばね３５のばね力が作用する方向へ作用力を生ぜしめる。主弁スプール３ ０は、作用室３８へ導かれたパイロット液体の圧力により主弁スプール３０を押 圧する力が調圧ばね３５のばね力と前記作用力とに平衡するよう弁孔３２内をノ ーマル位置より移動し、主弁スプール３０のノーマル位置からの移動量に応じて 入口通路４４より出口通路４３へ流通するパイロット液体の流量が絞り通路４１ により絞り制御される。このため、入口通路４４と出口通路４３との間に生じる パイロット液体の差圧により出口通路４３よりパイロット電磁弁１７Ａ、１７Ｂ へ供給するパイロット液体の圧力を所定の圧力に制御することができる。In this operation, the pilot liquid flowing from the supply passage 5 into the communication hole 21 is filtered by a single filter 23 provided in the communication hole 21 to filter out foreign matter, and the pilot solenoid valves 17A, 17B and The switching valve 15 is prevented from malfunctioning due to foreign matter and operates well. This pilot liquid flows through the flow passage 39 from the inlet passage 44 of the pressure reducing valve 22 and is guided to the working chamber 38, and presses the main valve spool 30 in the direction against the spring force of the pressure adjusting spring 35. At this time, the pilot liquid flows through the flow passage 39 to the spring chamber 36, and a differential pressure generated before and after the throttle 40 provided in the flow passage 39 produces an acting force in the direction in which the spring force of the pressure adjusting spring 35 acts on the main valve spool 30. Close. The main valve spool 30 is rotated in the valve hole 32 so that the force pressing the main valve spool 30 by the pressure of the pilot liquid introduced into the working chamber 38 is balanced with the spring force of the pressure regulating spring 35 and the working force. The throttle passage 41 restricts the flow rate of the pilot liquid that moves from the normal position and flows from the inlet passage 44 to the outlet passage 43 in accordance with the amount of movement of the main valve spool 30 from the normal position. Therefore, the pressure of the pilot liquid supplied from the outlet passage 43 to the pilot solenoid valves 17A, 17B can be controlled to a predetermined pressure by the differential pressure of the pilot liquid generated between the inlet passage 44 and the outlet passage 43.
【００１５】 そして、アクチュエータの使用目的に応じて作動液体の圧力を高圧に設定して 使用すると圧力を高めた分主弁スプール３０はさらに押圧され、入口通路４４よ り出口通路４３へ流出するパイロット液体の流量は絞り通路４１でさらに絞られ る。このため、入口通路４４と出口通路４３に生じる差圧を前よりも大きくし出 口通路４３よりパイロット電磁弁へ供給するパイロット液体の圧力を一定に制御 してアクチュエータの良好な作動制御を得ることができる。When the pressure of the working liquid is set to a high pressure according to the purpose of use of the actuator, the main valve spool 30 is further pressed due to the increased pressure, and the pilot passage is discharged from the inlet passage 44 to the outlet passage 43. The flow rate of the liquid is further reduced by the throttle passage 41. For this reason, the differential pressure generated in the inlet passage 44 and the outlet passage 43 is made larger than before, and the pressure of the pilot liquid supplied from the outlet passage 43 to the pilot solenoid valve is controlled to be constant to obtain good operation control of the actuator. You can
【００１６】 また、フィルタ２３が、ろ過した異物によって目詰まりし弁体２６の前後に生 じる差圧による作用力がばね部材２５のばね力より大きくなると、弁体２６は開 作動し、フィルタ２３の目詰まりによって不足した流量が通孔２８を流通し迂回 通路２９より減圧弁２２へ流入する。迂回通路２９は弁体２６が開作動してもそ の断面積がそのままのため許容値以上の大きさの異物を流通させることなくでき 、このためアクチュエータ８の良好な作動を長期間にわたり得ることができる。Further, when the filter 23 is clogged with the filtered foreign matter and the acting force due to the differential pressure generated before and after the valve body 26 becomes larger than the spring force of the spring member 25, the valve body 26 is opened and the filter 23 is opened. The insufficient flow rate due to the clogging of 23 flows through the through hole 28 and flows into the pressure reducing valve 22 through the bypass passage 29. Since the cross-sectional area of the bypass passage 29 remains the same even when the valve body 26 is opened, it is possible to prevent foreign matter having a size larger than the permissible value from flowing therethrough. Therefore, good operation of the actuator 8 can be achieved for a long period of time. it can.
【００１７】 また、フィルタ２３でろ過したパイロット液体を減圧弁２２へ流入するように したため、減圧弁２２へ流入する所定値以上の大きさの異物をフィルタ２３で除 去でき、作動液体の圧力を急激に高圧に設定変更した場合であっても主弁スプー ル３０と弁孔３２との間に介在する異物によって主弁スプール３０が作動不良を 起こすことなくなめらかに弁孔３２内を移動してパイロット液体の圧力を一定に 制御するため、アクチュエータ８の作動制御をさらに良好に得ることができる。Further, since the pilot liquid filtered by the filter 23 is allowed to flow into the pressure reducing valve 22, foreign matter having a size larger than a predetermined value flowing into the pressure reducing valve 22 can be removed by the filter 23, and the pressure of the working liquid is reduced. Even if the setting is suddenly changed to high pressure, the foreign matter present between the main valve spool 30 and the valve hole 32 causes the main valve spool 30 to move smoothly in the valve hole 32 without causing malfunction. Since the pressure of the pilot liquid is controlled to be constant, the operation control of the actuator 8 can be obtained even better.
【００１８】 また、フィルタ２３を減圧弁２２に固着し、減圧弁２２を連通孔２１内に螺入 して設けたため、フィルタ２３と減圧弁２２をともに連通孔２１から取りはずす ことができ、フィルタ２３と減圧弁２２の保守を容易に行うことができる。Since the filter 23 is fixed to the pressure reducing valve 22 and the pressure reducing valve 22 is screwed into the communication hole 21, both the filter 23 and the pressure reducing valve 22 can be removed from the communication hole 21. Therefore, maintenance of the pressure reducing valve 22 can be easily performed.
【００１９】[0019]
このように本考案によれば、圧力源へ接続する供給通路と貯槽へ接続する戻り 通路とを長手方向へ延在して内部に形成し、この供給通路と戻り通路にそれぞれ 連通の供給路および戻り路とアクチュエータ側へ接続する負荷通路に連通の負荷 路とパイロット路とを開口した積層部を長手方向に隔てて複数個上面に設けたマ ニホールドを有し、マニホールドの積層部にパイロット操作式の切換弁を積層設 置すると共に、この切換弁をパイロット操作するパイロット電磁弁を積層部に対 し別途設置してマニホールドに設け、切換弁を作動するためのパイロット液体を 流すパイロット通路を各積層部のパイロット路とパイロット電磁弁を介し連通す るよう長手方向へ延在してマニホールド内部に形成し、供給通路とパイロット通 路とを連通する連通孔をマニホールドに穿設し、供給通路より連通孔へ流入する パイロット液体の圧力を減圧する減圧弁を連通孔へ螺入して設け、パイロット液 体中に混入の異物をろ過する筒状のフィルタを減圧弁の供給通路側の連通孔内に 設け、減圧弁はフィルタにてろ過されたパイロット液体を減圧弁本体に穿設され た弁孔へ導く入口通路と弁孔より流出するパイロット液体をパイロット通路へ導 く出口通路とを備え、さらに前記弁孔内に主弁スプールを移動自在に収容し、こ の主弁スプールを調圧ばねのばね力により入口通路と出口通路間を全開連通する ノーマル位置へ付勢して設け、この調圧ばねを設置するばね室と入口通路より弁 孔内へ流入したパイロット液体を調圧ばねのばね力に抗するよう主弁スプールに 作用させる作用室とを主弁スプールの両端側に形成し、この作用室を入口通路と 連通すると共にばね室を戻り通路と連通して設け、主弁スプール内には作用室を 絞りを介してばね室と連通する流通路を設け、作用室に作用するパイロット液体 の圧力により主弁スプールがノーマル位置から移動する移動量に応じて入口通路 より弁孔内へ流入するパイロット液体を出口通路へ絞り流通するよう絞り通路を 主弁スプールに設けたため、パイロット電磁弁へ供給するパイロット液体の圧力 を一定に制御してアクチュエータの良好な作動制御を得ることができる。 As described above, according to the present invention, the supply passage connected to the pressure source and the return passage connected to the storage tank are formed in the inside by extending in the longitudinal direction, and the supply passage and the return passage are respectively connected to the supply passage and the return passage. The return path and the load path that connects to the actuator side have manifolds that are provided on the upper surface of the stack. In addition to the stacking of switching valves, a pilot solenoid valve for piloting this switching valve is separately installed on the stacking part and installed in the manifold, and pilot passages for flowing pilot liquid for operating the switching valves are stacked in each stacking. Is formed inside the manifold by extending in the longitudinal direction so as to communicate with the pilot passage of the section through the pilot solenoid valve, and connects the supply passage and the pilot passage. A through hole is made in the manifold, and a pressure reducing valve for reducing the pressure of the pilot liquid flowing from the supply passage into the communication hole is provided by screwing into the communication hole, and a cylindrical shape for filtering foreign matter mixed in the pilot liquid is provided. A filter is provided in the communication hole on the supply passage side of the pressure reducing valve.The pressure reducing valve has an inlet passage for guiding the pilot liquid filtered by the filter to the valve hole formed in the main body of the pressure reducing valve and a pilot liquid flowing out from the valve hole. An outlet passage leading to a pilot passage is provided, and a main valve spool is movably accommodated in the valve hole, and the main valve spool is fully opened and communicated between the inlet passage and the outlet passage by the spring force of a pressure regulating spring. A spring chamber for urging the pressure regulator spring to the normal position and a working chamber for acting the pilot liquid flowing into the valve hole from the inlet passage into the main valve spool against the spring force of the pressure regulator spring. The main dialect Is formed at both ends of the valve, the working chamber communicates with the inlet passage and the spring chamber communicates with the return passage, and the working chamber in the main valve spool communicates with the spring chamber through the throttle. Is provided, and the throttle passage is mainly provided so that the pilot liquid flowing from the inlet passage into the valve hole is squeezed to the outlet passage according to the amount of movement of the main valve spool from the normal position by the pressure of the pilot liquid acting on the working chamber. Since the valve spool is provided on the valve spool, the pressure of the pilot liquid supplied to the pilot solenoid valve can be controlled to be constant, and good operation control of the actuator can be obtained.
【００２０】 また、フィルタでろ過したパイロット液体を減圧弁２２へ流入するようにした ため、減圧弁へ流入する所定値以上の大きさの異物をフィルタ部材で除去でき、 作動液体の圧力を急激に高圧に設定変更した場合であっても主弁スプールと弁孔 との間に介在する異物によって主弁スプールが作動不良を起すことなくなめらか に弁孔内を移動してパイロット液体の圧力を一定に制御するため、アクチュエー タの作動制御をさらに良好に得ることができる。Further, since the pilot liquid filtered by the filter is allowed to flow into the pressure reducing valve 22, foreign matter having a size equal to or larger than a predetermined value flowing into the pressure reducing valve can be removed by the filter member, and the pressure of the working liquid is rapidly increased. Even if the setting is changed to a high pressure, foreign matter present between the main valve spool and the valve hole will cause the main valve spool to move smoothly in the valve hole without causing malfunction, and the pilot liquid pressure will be kept constant. Since it is controlled, it is possible to obtain better control of actuation of the actuator.
【図面の簡単な説明】[Brief description of drawings]
【図１】本考案の一実施例を一部省略して示す作動回路
図である。FIG. 1 is an operation circuit diagram showing an embodiment of the present invention with a part thereof omitted.
【図２】本考案の一実施例を示す弁装置の正面図であ
る。FIG. 2 is a front view of a valve device according to an embodiment of the present invention.
【図３】図２の線Ｅ−Ｅに沿った断面図である。3 is a cross-sectional view taken along the line EE of FIG.
【図４】図２の線Ｄ−Ｄに沿った断面図である。4 is a cross-sectional view taken along the line DD of FIG.
１マニホールド ４圧力源 ５供給通路 ６貯槽 ７戻り通路 ８アクチュエータ ９Ａ、９Ｂ負荷通路 １０積層部 １１供給路 １２戻り路 １３Ａ、１３Ｂ負荷路 １４パイロット路 １５切換弁 １７Ａ、１７Ｂパイロット電磁弁 ２０パイロット通路 ２１連通孔 ２２減圧弁 ２３フィルタ ３０主弁スプール ３１減圧弁本体 ３２弁孔 ３５調圧ばね ３６ばね室 ３８作用室 ３９流通路 ４０絞り ４１絞り通路 ４３出口通路 ４４入口通路 1 Manifold 4 Pressure Source 5 Supply Passage 6 Storage Tank 7 Return Passage 8 Actuator 9A, 9B Load Passage 10 Laminated Part 11 Supply Passage 12 Return Passage 13A, 13B Load Passage 14 Pilot Passage 15 Switching Valve 17A, 17B Pilot Solenoid Valve 20 Pilot Passage 21 Communication hole 22 Pressure reducing valve 23 Filter 30 Main valve spool 31 Pressure reducing valve body 32 Valve hole 35 Pressure adjusting spring 36 Spring chamber 38 Working chamber 39 Flow passage 40 Throttle 41 Throttle passage 43 Outlet passage 44 Inlet passage
Claims (1)
する戻り通路とを長手方向へ延在して内部に形成し、こ
の供給通路と戻り通路にそれぞれ連通の供給路および戻
り路とアクチュエータ側へ接続する負荷通路に連通の負
荷路とパイロット路とを開口した積層部を長手方向に隔
てて複数個上面に設けたマニホールドを有し、マニホー
ルドの積層部にパイロット操作式の切換弁を積層設置す
ると共に、この切換弁をパイロット操作するパイロット
電磁弁を積層部に対し別途設置してマニホールドに設
け、切換弁を作動するためのパイロット液体を流すパイ
ロット通路を各積層部のパイロット路とパイロット電磁
弁を介し連通するよう長手方向へ延在してマニホールド
内部に形成し、供給通路とパイロット通路とを連通する
連通孔をマニホールドに穿設し、供給通路より連通孔へ
流入するパイロット液体の圧力を減圧する減圧弁を連通
孔へ螺入して設け、パイロット液体中に混入の異物をろ
過する筒状のフィルタを減圧弁の供給通路側の連通孔内
に設け、減圧弁はフィルタにてろ過されたパイロット液
体を減圧弁本体に穿設された弁孔へ導く入口通路と弁孔
より流出するパイロット液体をパイロット通路へ導く出
口通路とを備え、さらに前記弁孔内に主弁スプールを移
動自在に収容し、この主弁スプールを調圧ばねのばね力
により入口通路と出口通路間を全開連通するノーマル位
置へ付勢して設け、この調圧ばねを設置するばね室と入
口通路より弁孔内へ流入したパイロット液体を調圧ばね
のばね力に抗するよう主弁スプールに作用させる作用室
とを主弁スプールの両端側に形成し、この作用室を入口
通路と連通すると共にばね室を戻り通路と連通して設
け、主弁スプール内には作用室を絞りを介してばね室と
連通する流通路を設け、作用室に作用するパイロット液
体の圧力により主弁スプールがノーマル位置から移動す
る移動量に応じて入口通路より弁孔内へ流入するパイロ
ット液体を出口通路へ絞り流通するよう絞り通路を主弁
スプールに設けて成るマニホールド形弁装置。1. A supply passage connected to a pressure source and a return passage connected to a storage tank are formed inside by extending in a longitudinal direction, and the supply passage and the return passage are connected to the supply passage and the return passage, respectively, and an actuator. The load passage connected to the side has a manifold that has a plurality of laminated portions that open a communication passage and a pilot passage and that are separated from each other in the longitudinal direction, and that has a pilot-operated switching valve laminated on the laminated portion of the manifold. In addition to installing the pilot solenoid valve for pilot operation of this switching valve separately on the stacking part, it is installed on the manifold, and the pilot passage for flowing the pilot liquid for operating the switching valve is provided with the pilot passage of each stacking part and the pilot solenoid valve. A manifold is provided with a communication hole that extends in the longitudinal direction so as to communicate with the valve and is formed inside the manifold, and that communicates the supply passage and the pilot passage. A pressure reducing valve for reducing the pressure of the pilot liquid flowing into the communication hole from the supply passage is provided by screwing into the communication hole, and a cylindrical filter for filtering foreign matter mixed in the pilot liquid is installed in the pressure reducing valve. Provided in the communication hole on the supply passage side, the pressure reducing valve is an inlet passage for guiding the pilot liquid filtered by the filter to the valve hole formed in the main body of the pressure reducing valve and an outlet for guiding the pilot liquid flowing out of the valve hole to the pilot passage. A main valve spool is movably accommodated in the valve hole, and the main valve spool is urged by a spring force of a pressure adjusting spring to a normal position in which the inlet passage and the outlet passage are in full open communication. Both ends of the main valve spool are provided with a spring chamber in which the pressure regulating spring is installed, and a working chamber for causing the pilot liquid flowing into the valve hole from the inlet passage to act on the main valve spool against the spring force of the pressure regulating spring. Formed into The working chamber communicates with the inlet passage and the spring chamber communicates with the return passage, and the main valve spool has a flow passage communicating with the spring chamber through the throttle, and the pilot liquid acting on the working chamber. Manifold type valve device in which a throttle passage is provided in the main valve spool so that the pilot liquid flowing from the inlet passage into the valve hole is squeezed to the outlet passage according to the amount of movement of the main valve spool from the normal position due to the pressure of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993052284U JP2597173Y2 (en) | 1993-08-31 | 1993-08-31 | Manifold type valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993052284U JP2597173Y2 (en) | 1993-08-31 | 1993-08-31 | Manifold type valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0718084U true JPH0718084U (en) | 1995-03-31 |
| JP2597173Y2 JP2597173Y2 (en) | 1999-06-28 |
Family
ID=12910504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993052284U Expired - Fee Related JP2597173Y2 (en) | 1993-08-31 | 1993-08-31 | Manifold type valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2597173Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074162A (en) * | 1999-09-01 | 2001-03-23 | Ebara Corp | Fluid control valve and plate with filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2580603Y2 (en) | 1992-08-31 | 1998-09-10 | 豊興工業株式会社 | Manifold type valve device |
-
1993
- 1993-08-31 JP JP1993052284U patent/JP2597173Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001074162A (en) * | 1999-09-01 | 2001-03-23 | Ebara Corp | Fluid control valve and plate with filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2597173Y2 (en) | 1999-06-28 |
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