DE2601999C3 - Anordnung zur Beeinflussung der Arbeitsmenge eines Servomotors - Google Patents

Anordnung zur Beeinflussung der Arbeitsmenge eines Servomotors

Info

Publication number
DE2601999C3
DE2601999C3 DE2601999A DE2601999A DE2601999C3 DE 2601999 C3 DE2601999 C3 DE 2601999C3 DE 2601999 A DE2601999 A DE 2601999A DE 2601999 A DE2601999 A DE 2601999A DE 2601999 C3 DE2601999 C3 DE 2601999C3
Authority
DE
Germany
Prior art keywords
pressure
throttle element
throttle
reducing valve
valve
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
Application number
DE2601999A
Other languages
German (de)
English (en)
Other versions
DE2601999A1 (de
DE2601999B2 (de
Inventor
Hans Skov Augustenborg Andersen
Preben Nordborg Christiansen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Danfoss AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Danfoss AS filed Critical Danfoss AS
Priority to DE2601999A priority Critical patent/DE2601999C3/de
Priority to CH1617576A priority patent/CH600166A5/xx
Priority to IT67016/77A priority patent/IT1082954B/it
Priority to GB1570/77A priority patent/GB1564744A/en
Priority to NLAANVRAGE7700447,A priority patent/NL169510C/xx
Priority to CA269,906A priority patent/CA1057163A/en
Priority to DK17177A priority patent/DK149392C/da
Priority to JP52004342A priority patent/JPS5845603B2/ja
Priority to PL1977195387A priority patent/PL112856B1/pl
Priority to DD7700197004A priority patent/DD127919A5/xx
Priority to BR7700353A priority patent/BR7700353A/pt
Priority to SE7700585A priority patent/SE424217B/xx
Priority to BE174242A priority patent/BE850577A/xx
Priority to ES455200A priority patent/ES455200A1/es
Priority to FR7701746A priority patent/FR2339078A1/fr
Publication of DE2601999A1 publication Critical patent/DE2601999A1/de
Priority to US05/883,287 priority patent/US4204460A/en
Publication of DE2601999B2 publication Critical patent/DE2601999B2/de
Application granted granted Critical
Publication of DE2601999C3 publication Critical patent/DE2601999C3/de
Priority to US06/314,763 priority patent/US4364304A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/055—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 by adjusting the pump output or bypass
    • 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
    • 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
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check 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
    • 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
    • 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/31552—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line
    • F15B2211/31558—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line having a single output member
    • 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
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in control
    • 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
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/353—Flow control by regulating means in return line, i.e. meter-out control
    • 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
    • F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50572—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using a pressure compensating valve for controlling the pressure difference across a flow 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50581—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves
    • F15B2211/5059—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using counterbalance valves using double counterbalance 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/57—Control of a differential pressure
    • 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
    • F15B2211/7052—Single-acting output members
    • 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
    • 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
    • F15B2211/75—Control of speed of the output member
    • 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
    • F15B2211/76—Control of force or torque of the output member
    • F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy

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)
  • Fluid-Pressure Circuits (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Control Of Fluid Pressure (AREA)
  • Servomotors (AREA)
DE2601999A 1976-01-21 1976-01-21 Anordnung zur Beeinflussung der Arbeitsmenge eines Servomotors Expired DE2601999C3 (de)

Priority Applications (17)

Application Number Priority Date Filing Date Title
DE2601999A DE2601999C3 (de) 1976-01-21 1976-01-21 Anordnung zur Beeinflussung der Arbeitsmenge eines Servomotors
CH1617576A CH600166A5 (pl) 1976-01-21 1976-12-22
IT67016/77A IT1082954B (it) 1976-01-21 1977-01-05 Disposizione per influenzare la quantita di lavoro prestato da un servomotore a pressione di fluido
GB1570/77A GB1564744A (en) 1976-01-21 1977-01-14 Valve assembly
NLAANVRAGE7700447,A NL169510C (nl) 1976-01-21 1977-01-17 Inrichting voor het sturen van een via leidingen door een pomp gevoede servomotor.
PL1977195387A PL112856B1 (en) 1976-01-21 1977-01-18 Control system for controlling servo-motor capacity
DK17177A DK149392C (da) 1976-01-21 1977-01-18 Anordning til paavirkning af en servomotors arbejdsmaengde
JP52004342A JPS5845603B2 (ja) 1976-01-21 1977-01-18 サ−ボモ−タの作業量を調節するための装置
CA269,906A CA1057163A (en) 1976-01-21 1977-01-18 Arrangement for influencing the operating quantity of a servo-motor
BR7700353A BR7700353A (pt) 1976-01-21 1977-01-19 Dispositivo para influenciar o rendimento de um motor auxiliar
DD7700197004A DD127919A5 (de) 1976-01-21 1977-01-19 Anordnung zur beeinflussung der arbeitsmenge eines servomotors
BE174242A BE850577A (fr) 1976-01-21 1977-01-20 Agencement destine a influencer le debit de travail d'un servo-moteur
ES455200A ES455200A1 (es) 1976-01-21 1977-01-20 Perfeccionamientos introducidos en una disposicion para in- fluir en el caudal de trabajo de un servomotor.
SE7700585A SE424217B (sv) 1976-01-21 1977-01-20 Anordning for att paverka arbetsmengden hos en av en yttre kraft belastbar servomotor
FR7701746A FR2339078A1 (fr) 1976-01-21 1977-01-21 Dispositif pour commander le debit de travail d'un servomoteur hydraulique
US05/883,287 US4204460A (en) 1976-01-21 1978-03-03 Arrangement for influencing the operating quantity of a servo-motor
US06/314,763 US4364304A (en) 1976-01-21 1981-10-26 Arrangement for influencing the operating quantity of a servomotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2601999A DE2601999C3 (de) 1976-01-21 1976-01-21 Anordnung zur Beeinflussung der Arbeitsmenge eines Servomotors

Publications (3)

Publication Number Publication Date
DE2601999A1 DE2601999A1 (de) 1977-07-28
DE2601999B2 DE2601999B2 (de) 1979-06-21
DE2601999C3 true DE2601999C3 (de) 1980-02-21

Family

ID=5967835

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2601999A Expired DE2601999C3 (de) 1976-01-21 1976-01-21 Anordnung zur Beeinflussung der Arbeitsmenge eines Servomotors

Country Status (15)

Country Link
JP (1) JPS5845603B2 (pl)
BE (1) BE850577A (pl)
BR (1) BR7700353A (pl)
CA (1) CA1057163A (pl)
CH (1) CH600166A5 (pl)
DD (1) DD127919A5 (pl)
DE (1) DE2601999C3 (pl)
DK (1) DK149392C (pl)
ES (1) ES455200A1 (pl)
FR (1) FR2339078A1 (pl)
GB (1) GB1564744A (pl)
IT (1) IT1082954B (pl)
NL (1) NL169510C (pl)
PL (1) PL112856B1 (pl)
SE (1) SE424217B (pl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2757660A1 (de) * 1977-12-23 1979-06-28 Bosch Gmbh Robert Hydraulische steuereinrichtung mit wenigstens einem wegeventil
DE3216580A1 (de) * 1981-05-07 1983-02-24 Hiab-Foco AB, 82401 Hudiksvall Lasthalte- und senkbremsventil
US4724673A (en) * 1986-06-30 1988-02-16 Vickers, Incorporated Power transmission
US4679492A (en) * 1986-07-21 1987-07-14 Caterpillar Inc. Compensated fluid flow control valve
US4665801A (en) * 1986-07-21 1987-05-19 Caterpillar Inc. Compensated fluid flow control valve
US4688470A (en) * 1986-07-21 1987-08-25 Caterpillar Inc. Compensated fluid flow control valve
US4694731A (en) * 1986-12-22 1987-09-22 Caterpillar Inc. Load compensated valve
DE3710699C1 (de) * 1987-03-31 1988-08-18 Heilmeier & Weinlein Hydraulische Steuervorrichtung fuer eine Verbrauchergruppe
US4741248A (en) * 1987-05-08 1988-05-03 Caterpillar Inc. Load responsive system having synchronizing systems between positive and negative load compensation
US5067389A (en) * 1990-08-30 1991-11-26 Caterpillar Inc. Load check and pressure compensating valve
DE19800720C2 (de) * 1998-01-12 2001-10-31 Sauer Danfoss Nordborg As Nord Steuerventil für einen hydraulischen Motor
KR100518769B1 (ko) * 2003-06-19 2005-10-05 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 유압펌프 토출유량 제어회로

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559534A (en) * 1968-04-23 1971-02-02 Pines Engineering Co Inc Hydraulic actuator control circuit
JPS4896393U (pl) * 1972-02-22 1973-11-15
JPS521470B2 (pl) * 1972-05-22 1977-01-14

Also Published As

Publication number Publication date
CA1057163A (en) 1979-06-26
DK149392C (da) 1986-10-27
BE850577A (fr) 1977-05-16
JPS5845603B2 (ja) 1983-10-11
DE2601999A1 (de) 1977-07-28
NL7700447A (nl) 1977-07-25
FR2339078B1 (pl) 1983-08-19
FR2339078A1 (fr) 1977-08-19
DD127919A5 (de) 1977-10-19
DK149392B (da) 1986-05-26
GB1564744A (en) 1980-04-10
JPS5290786A (en) 1977-07-30
SE424217B (sv) 1982-07-05
DE2601999B2 (de) 1979-06-21
NL169510C (nl) 1982-07-16
ES455200A1 (es) 1977-12-16
CH600166A5 (pl) 1978-06-15
PL112856B1 (en) 1980-11-29
IT1082954B (it) 1985-05-21
SE7700585L (sv) 1977-07-22
DK17177A (da) 1977-07-22
BR7700353A (pt) 1977-09-20

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