JP5184773B2 - 圧力補償弁を有する油圧システム - Google Patents
圧力補償弁を有する油圧システム Download PDFInfo
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- JP5184773B2 JP5184773B2 JP2006289952A JP2006289952A JP5184773B2 JP 5184773 B2 JP5184773 B2 JP 5184773B2 JP 2006289952 A JP2006289952 A JP 2006289952A JP 2006289952 A JP2006289952 A JP 2006289952A JP 5184773 B2 JP5184773 B2 JP 5184773B2
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- pressure
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- valve
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- 239000012530 fluid Substances 0.000 claims description 191
- 238000006073 displacement reaction Methods 0.000 claims description 88
- 230000004044 response Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 description 26
- 238000004891 communication Methods 0.000 description 20
- 230000006870 function Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D31/00—Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution
- F16D31/02—Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
-
- 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
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
- E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
-
- 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
- E02F9/2292—Systems with two or more pumps
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/14—Special measures for giving the operating person a "feeling" of the response of the actuated device
-
- 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
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- 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
- F15B2211/20576—Systems with pumps with multiple pumps
-
- 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
-
- 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
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
12 フレーム
14 作業器具
16 オペレータインタフェース
18 油圧アクチュエータ
20 油圧アクチュエータ
22 油圧アクチュエータ
28 オペレータインタフェース装置
100 制御システム
104 制御器
106 通信線
108 通信線
110 通信線
112 通信線
114 通信線
116 通信線
118 通信線
120 通信線
122 通信線
124 通信線
126 圧力センサ
128 圧力センサ
130 圧力センサ
132 圧力センサ
134 圧力センサ
200 油圧システム
202 流体源
204 流体源
206 低圧源
208 バイパス弁
210 バイパス弁
212 油圧回路
214 第1の供給通路
216 第2の供給通路
300 アルゴリズム
302 オペレータインタフェース入力命令
304 リレーショナルデータベース
306 リレーショナルデータベース
308 リレーショナルデータベース
310 リレーショナルデータベース
312a ステップ:決定
312b ステップ:決定
312c ステップ:決定
312d ステップ:決定
314 最大負荷圧
316 決定:調整圧力は最大負荷圧以下であるか?
318 関係:第2のバイパス変位はゼロに等しい
316 決定:最大負荷圧以下である調整圧力の発生は、最初の発生であるか?
322 ステップ:第2のバイパスの決定
324 ステップ:第1及び第2のバイパス変位の決定
326 バイパス命令
328 ステップ:推定バイパス流と流体源流との組み合わせ
330 流体源命令
Claims (3)
- 油圧システムであって、
第1の加圧流体源と、
少なくとも1つの流体アクチュエータと、
第1の流体源から低圧源に選択的に加圧流体を連通させるように構成された第1の流体源と少なくとも1つの流体アクチュエータとの間に配置された第1の弁と、
制御器であって、
オペレータ入力の関数として、第1の弁の第1の変位量を決定し、
油圧システム内の加圧流体の、上記第1の圧力流体源と上記少なくとも1つの流体アクチュエータとの間の圧力の関数として、第1の弁の第2の変位量を決定し、
オペレータ入力の関数として決定された第1の圧力が、少なくとも1つの流体アクチュエータに作用する加圧流体の圧力以下であるときに、第2の変位量の関数として第1の変位量を修正するように構成された制御器とを備える油圧システム。
- 第1の弁の第1の変位量が、オペレータ入力及び所定の変位量の関数として決定され、
第1の弁の第2の変位量が、油圧システム内の加圧流体の圧力及び所定の変位量の関数として決定され、
制御器は、第1の弁の第1及び第2の変位量に基いて第3の変位量を決定し、
制御器は第1の弁を移動させ、第3の変位量によって変動した流れ面積を通して加圧流体が流れることを可能にする、請求項1に記載の油圧システム。 - 作業機械であって、
作業器具と、
フレームと、
作業器具の移動に影響を及ぼすように構成された第1の流体アクチュエータと、
フレームの少なくとも一部分の移動に影響を及ぼすように構成された第2の流体アクチュエータと、
油圧システムであって、
低圧源と、
第1及び第2の加圧流体源と、
第1の命令に応答して低圧源への加圧流体の流れを選択的に許容するように構成された第1の弁と、
第2の命令に応答して低圧源への加圧流体の流れを選択的に許容するように構成された第2の弁と
を含む油圧システムと
制御器を備え、
該制御器は、オペレータ入力の関数として、上記第1および第2の弁それぞれの第1の変位量を決定し、
油圧システム内の加圧流体の、それぞれ、上記第1の圧力流体源と上記第1の流体アクチュエータとの間の圧力、および、上記第2の圧力流体源と上記第2の流体アクチュエータとの間の圧力の関数として、第1および第2の弁それぞれの第2の変位量を決定し、
オペレータ入力の関数として決定されたそれぞれ第1の圧力が、上記第1および第2の流体アクチュエータにそれぞれ作用する加圧流体の圧力以下であるときに、それぞれ、第2の変位量の関数として第1の変位量を修正するよう、上記第1および第2の命令を通信する作業機械。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/261,539 | 2005-10-31 | ||
US11/261,539 US7320216B2 (en) | 2005-10-31 | 2005-10-31 | Hydraulic system having pressure compensated bypass |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007127275A JP2007127275A (ja) | 2007-05-24 |
JP5184773B2 true JP5184773B2 (ja) | 2013-04-17 |
Family
ID=37994525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006289952A Active JP5184773B2 (ja) | 2005-10-31 | 2006-10-25 | 圧力補償弁を有する油圧システム |
Country Status (2)
Country | Link |
---|---|
US (1) | US7320216B2 (ja) |
JP (1) | JP5184773B2 (ja) |
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2005
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US7320216B2 (en) | 2008-01-22 |
US20070095059A1 (en) | 2007-05-03 |
JP2007127275A (ja) | 2007-05-24 |
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