JP2006125638A - 流量調整器を備えた油圧系統 - Google Patents
流量調整器を備えた油圧系統 Download PDFInfo
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- JP2006125638A JP2006125638A JP2005316536A JP2005316536A JP2006125638A JP 2006125638 A JP2006125638 A JP 2006125638A JP 2005316536 A JP2005316536 A JP 2005316536A JP 2005316536 A JP2005316536 A JP 2005316536A JP 2006125638 A JP2006125638 A JP 2006125638A
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Classifications
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- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/003—Systems with load-holding valves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2296—Systems with a variable displacement pump
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control valve
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
【解決手段】作業機械用の油圧系統が開示される。油圧系統は、加圧流体源と、第1のチャンバ及び第2のチャンバを備えた流体アクチュエータとを有する。油圧系統はまた、源を第1のチャンバに選択的に流体連通するよう構成された第1の弁と、源を第2のチャンバに選択的に流体連通するよう構成された第2の弁とを備える。油圧系統は、さらに、源と第1の及び第2の弁との間に向けられた流体の圧力を制御する手段を備える。
【選択図】図2
Description
12 フレーム
14 作業用具
16 油圧シリンダ
18 牽引装置
20 直接枢軸
22 油圧系統
24 源
26 ヘッド側の供給弁
28 ヘッド側のドレン弁
30 ロッド側の供給弁
32 ロッド側のドレン弁
34 タンク
36 比例流量調整弁
38 ヘッド側の圧力逃がし弁
40 ヘッド側の補給弁
42 ロッド側の圧力逃がし弁
44 ロッド側の補給弁
46 チューブ
48 ピストンアセンブリ
50 第1のチャンバ
52 第2のチャンバ
54 ピストン
55 追加の油圧システム
56 ピストンロッド
58 第1の油圧面
59 第2の油圧面
60 上流の共通流体通路
61 第1のチャンバ流体通路
62 下流の共通流体通路
63 第2のチャンバ流体通路
64 共通ドレン通路
74 シャトル弁
76 逆止め弁
78 流体通路
80 制限オリフィス
82 流体通路
84 制限オリフィス
Claims (5)
- 加圧流体源と、
第1のチャンバ及び第2のチャンバを備えた流体アクチュエータと、
源を第1のチャンバに選択的に流体連通するよう構成された第1の弁と、
源を第2のチャンバに選択的に流体連通するよう構成された第2の弁と、
源と第1の及び第2の弁との間に向けられた流体の圧力を制御する手段と
を有する油圧系統。 - 加圧流体源と、
第1のチャンバ及び第2のチャンバを備えた流体アクチュエータと、
源を第1のチャンバに選択的に流体連通するよう構成された第1の弁と、
源を第2のチャンバに選択的に流体連通するよう構成された第2の弁と、
源と第1の及び第2の弁との間に向けられた流体の圧力を制御するよう構成された比例流量調整弁と
を有する油圧系統。 - タンクと、
タンクを第1のチャンバに選択的に流体連通するよう構成された第3の弁と、
タンクを第2のチャンバに選択的に流体連通するよう構成された第4の弁と
をさらに含む請求項2に記載の油圧系統。 - 流体を加圧することと、
加圧流体を第1の弁を介してアクチュエータの第1のチャンバに向けることと、
加圧流体を第2の弁を介してアクチュエータの第2のチャンバに向けることと、
第1の及び第2の弁の少なくとも1つを選択的に操作して、アクチュエータを動かすことと、
第1の及び第2の弁の1つ全体の差圧に応じて比例流量調整弁体を動かして、所望の圧力の所定の範囲内に、第1の及び第2の弁に供給された流体の圧力を維持することと
を含む、油圧系統を操作する方法。 - 作業用具と、
油圧系統と
を有する作業機械であって、該油圧系統が、
加圧流体源と、
タンクと、
第1のチャンバ及び第2のチャンバを備え、かつ作業用具を動かすよう構成された流体アクチュエータと、
源を第1のチャンバに選択的に流体連通するよう構成された第1の弁と、
源を第2のチャンバに選択的に流体連通するよう構成された第2の弁と、
源と第1の及び第2の弁との間に向けられた流体の圧力を制御するよう構成された比例流量調整弁と、
第1のチャンバをタンクに選択的に流体連通するよう構成された第3の弁と、
第2のチャンバをタンクに選択的に流体連通するよう構成された第4の弁とを含む作業機械。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/975,413 US7204084B2 (en) | 2004-10-29 | 2004-10-29 | Hydraulic system having a pressure compensator |
US10/975,413 | 2004-10-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006125638A true JP2006125638A (ja) | 2006-05-18 |
JP5265078B2 JP5265078B2 (ja) | 2013-08-14 |
Family
ID=36201997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005316536A Expired - Fee Related JP5265078B2 (ja) | 2004-10-29 | 2005-10-31 | 流量調整器を備えた油圧系統 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7204084B2 (ja) |
JP (1) | JP5265078B2 (ja) |
DE (1) | DE102005043344A1 (ja) |
Cited By (1)
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WO2017191855A1 (ko) * | 2016-05-03 | 2017-11-09 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 전기유압밸브 장치 |
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- 2005-10-31 JP JP2005316536A patent/JP5265078B2/ja not_active Expired - Fee Related
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WO2017191855A1 (ko) * | 2016-05-03 | 2017-11-09 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 전기유압밸브 장치 |
Also Published As
Publication number | Publication date |
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US7204084B2 (en) | 2007-04-17 |
DE102005043344A1 (de) | 2006-05-04 |
JP5265078B2 (ja) | 2013-08-14 |
US20060090460A1 (en) | 2006-05-04 |
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