JPS6340603U - - Google Patents
Info
- Publication number
- JPS6340603U JPS6340603U JP1986132766U JP13276686U JPS6340603U JP S6340603 U JPS6340603 U JP S6340603U JP 1986132766 U JP1986132766 U JP 1986132766U JP 13276686 U JP13276686 U JP 13276686U JP S6340603 U JPS6340603 U JP S6340603U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- switching valve
- type switching
- hydraulic
- chamber
- 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
- 238000010586 diagram Methods 0.000 description 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
- F16K31/22—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86622—Motor-operated
- Y10T137/8663—Fluid motor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Valve Housings (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Driven Valves (AREA)
Description
第1図は本考案の油圧パイロツト式切換弁の第
1の実施例を示す要部断面図、第2図は本考案の
第2の実施例を示す要部断面図、第3図は本考案
の第3の実施例を示す要部断面図、第4図は本考
案の対象とする油圧パイロツト式切換弁が配設さ
れるパイロツト回路を示す回路図、第5図は従来
の油圧パイロツト式切換弁の要部を示す断面図で
ある。 30,46,51……油圧パイロツト式切換弁
、31,54……ブロツク、32,33,52…
…スプール、34,35,53……パイロツト油
室、38,39……アダプタ、40,41……パ
イロツトポート、42,55……ドレン通路、4
4,45,49,50……ねじ螺合部(経路)、
56……通路。
1の実施例を示す要部断面図、第2図は本考案の
第2の実施例を示す要部断面図、第3図は本考案
の第3の実施例を示す要部断面図、第4図は本考
案の対象とする油圧パイロツト式切換弁が配設さ
れるパイロツト回路を示す回路図、第5図は従来
の油圧パイロツト式切換弁の要部を示す断面図で
ある。 30,46,51……油圧パイロツト式切換弁
、31,54……ブロツク、32,33,52…
…スプール、34,35,53……パイロツト油
室、38,39……アダプタ、40,41……パ
イロツトポート、42,55……ドレン通路、4
4,45,49,50……ねじ螺合部(経路)、
56……通路。
Claims (1)
- 【実用新案登録請求の範囲】 (1) スプールを駆動するパイロツト圧油が導か
れるパイロツト油室を備えた油圧パイロツト式切
換弁において、上記パイロツト油室の近傍にドレ
ン通路を設けるとともに、該パイロツト油室とド
レン通路とを連通させる空気の流通用の経路を設
けたことを特徴とする油圧パイロツト式切換弁。 (2) 経路がねじ螺合部であることを特徴とする
実用新案登録請求の範囲第(1)項記載の油圧パイ
ロツト式切換弁。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986132766U JPH0349286Y2 (ja) | 1986-09-01 | 1986-09-01 | |
DE3788517T DE3788517T2 (de) | 1986-09-01 | 1987-08-27 | Hydraulisches richtungs-vorsteuerventil. |
KR1019880700463A KR950002535B1 (ko) | 1986-09-01 | 1987-08-27 | 유압파일럿조작 방향제어밸브 |
EP87905650A EP0286683B1 (en) | 1986-09-01 | 1987-08-27 | Hydraulic pilot type direction control valve |
PCT/JP1987/000635 WO1988001706A1 (en) | 1986-09-01 | 1987-08-27 | Hydraulic pilot type direction control valve |
US07/196,011 US4832082A (en) | 1986-09-01 | 1987-08-27 | Hydraulic pilot operated directional control valve |
CN87106021A CN1010607B (zh) | 1986-09-01 | 1987-09-01 | 液压导阀式方向控制阀 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986132766U JPH0349286Y2 (ja) | 1986-09-01 | 1986-09-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6340603U true JPS6340603U (ja) | 1988-03-16 |
JPH0349286Y2 JPH0349286Y2 (ja) | 1991-10-22 |
Family
ID=15089054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986132766U Expired JPH0349286Y2 (ja) | 1986-09-01 | 1986-09-01 |
Country Status (7)
Country | Link |
---|---|
US (1) | US4832082A (ja) |
EP (1) | EP0286683B1 (ja) |
JP (1) | JPH0349286Y2 (ja) |
KR (1) | KR950002535B1 (ja) |
CN (1) | CN1010607B (ja) |
DE (1) | DE3788517T2 (ja) |
WO (1) | WO1988001706A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3890121T1 (de) * | 1987-02-20 | 1989-04-13 | Hitachi Construction Machinery | Hydraulischer fernsteuerungskreis und oelschnellablassventil |
AU603907B2 (en) * | 1987-06-30 | 1990-11-29 | Hitachi Construction Machinery Co. Ltd. | Hydraulic drive system |
US5284220A (en) * | 1988-07-25 | 1994-02-08 | Atsugi Unisia Corporation | Pressure control valve assembly for hydraulic circuit and automotive rear wheel steering system utilizing the same |
JP2786401B2 (ja) * | 1994-11-10 | 1998-08-13 | 川崎重工業株式会社 | 油圧操作弁 |
US6021813A (en) * | 1995-09-26 | 2000-02-08 | Mannesmann Rexroth Ag | Electromagnetically actuated directional valve |
GB2344835B (en) * | 1998-12-18 | 2000-11-08 | Aco Technologies Plc | Sealing assembly |
JP4782711B2 (ja) * | 2007-02-21 | 2011-09-28 | 日立建機株式会社 | 方向制御弁装置およびこの方向制御弁装置を複数備えた方向制御弁装置ブロック |
DE102016212310A1 (de) * | 2016-07-06 | 2018-01-11 | Robert Bosch Gmbh | Ventil mit über den Steuerschieber entlüftetem Steuerraum |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1938772A (en) * | 1930-03-08 | 1933-12-12 | Cincinnati Milling Machine Co | Hydraulic drive for milling machines |
US2568123A (en) * | 1950-07-25 | 1951-09-18 | Standard Refrigeration Company | Pressure reducing device for refrigerating apparatus |
BE792618A (fr) * | 1971-12-13 | 1973-06-12 | Caterpillar Tractor Co | Ensemble de valves de commande hydrauliques. |
JPS5154418Y2 (ja) * | 1972-11-08 | 1976-12-27 |
-
1986
- 1986-09-01 JP JP1986132766U patent/JPH0349286Y2/ja not_active Expired
-
1987
- 1987-08-27 KR KR1019880700463A patent/KR950002535B1/ko not_active IP Right Cessation
- 1987-08-27 EP EP87905650A patent/EP0286683B1/en not_active Expired - Lifetime
- 1987-08-27 DE DE3788517T patent/DE3788517T2/de not_active Expired - Lifetime
- 1987-08-27 WO PCT/JP1987/000635 patent/WO1988001706A1/ja active IP Right Grant
- 1987-08-27 US US07/196,011 patent/US4832082A/en not_active Expired - Lifetime
- 1987-09-01 CN CN87106021A patent/CN1010607B/zh not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4832082A (en) | 1989-05-23 |
WO1988001706A1 (en) | 1988-03-10 |
EP0286683B1 (en) | 1993-12-15 |
JPH0349286Y2 (ja) | 1991-10-22 |
EP0286683A1 (en) | 1988-10-19 |
CN87106021A (zh) | 1988-04-13 |
KR950002535B1 (ko) | 1995-03-21 |
EP0286683A4 (en) | 1989-08-30 |
KR880701850A (ko) | 1988-11-05 |
DE3788517D1 (de) | 1994-01-27 |
CN1010607B (zh) | 1990-11-28 |
DE3788517T2 (de) | 1994-06-16 |