BR7700811A - Sistema hidraulico tendo varias bombas de deslocamento variavel - Google Patents

Sistema hidraulico tendo varias bombas de deslocamento variavel

Info

Publication number: BR7700811A
Authority: BR; Brazil
Prior art keywords: hydraulic system; variable displacement; displacement pumps; various variable; various
Prior art date: 1976-03-15

Application number

BR7700811A

Other languages

English (en)

Portuguese (pt)

Inventor

H Moore

Original Assignee

Caterpillar Tractor Co

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.)

1976-03-15

Filing date

1977-02-09

Publication date

1977-10-11

1977-02-09 Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co

1977-10-11 Publication of BR7700811A publication Critical patent/BR7700811A/pt

Links

238000006073 displacement reaction Methods 0.000 title 1

Classifications

- 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
- 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
- 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
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
- 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
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
- F04B49/103—Responsive to speed
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant 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
- F15B2211/20—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
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40576—Assemblies of multiple valves
- F15B2211/40592—Assemblies of multiple valves with multiple valves in parallel flow paths
- 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
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
- F15B2211/41518—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve being connected to multiple pressure sources
- 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
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
- 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
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow 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
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the 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
- F15B2211/60—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
- F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups

Landscapes

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)
Operation Control Of Excavators (AREA)

BR7700811A 1976-03-15 1977-02-09 Sistema hidraulico tendo varias bombas de deslocamento variavel BR7700811A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/666,723 US4017216A (en)	1976-03-15	1976-03-15	Variable underspeed system linkage

Publications (1)

Publication Number	Publication Date
BR7700811A true BR7700811A (pt)	1977-10-11

Family

ID=24675184

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR7700811A BR7700811A (pt)	1976-03-15	1977-02-09	Sistema hidraulico tendo varias bombas de deslocamento variavel

Country Status (5)

Country	Link
US (1)	US4017216A (2)
JP (1)	JPS52121802U (2)
BE (1)	BE851647A (2)
BR (1)	BR7700811A (2)
CA (1)	CA1043226A (2)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1599553A (en) *	1977-01-11	1981-10-07	Sauer Getriebe Kg	Regulating system for driving means more particularly a hydrostatic travelling drive
DE2700803C2 (de) *	1977-01-11	1982-10-28	Sauer Getriebe KG, 2350 Neumünster	Regelungssystem für eine Antriebseinrichtung
SE435750B (sv) *	1979-06-15	1984-10-15	Akermans Verkstad Ab	Anordning for begrensning av fran ett hydraulaggregat uttagen effekt
EP0065011A4 (en) *	1980-10-31	1983-03-15	Yamatake Honeywell Co Ltd	Pump driving valve device.
KR910009257B1 (ko) *	1985-09-07	1991-11-07	히다찌 겡끼 가부시기가이샤	유압건설기계의 제어시스템
DE3611553C1 (de) *	1986-04-07	1987-07-23	Orenstein & Koppel Ag	Anordnung zum Betrieb eines dieselhydraulischen Antriebes
US5016440A (en) *	1989-10-13	1991-05-21	Sager William F	Apparatus for delivering a controllable variable flow of pressurized fluid
JPH08338405A (ja) *	1995-04-12	1996-12-24	Komatsu Ltd	可変容量型油圧ポンプの容量制御装置
JP4067596B2 (ja) *	1997-03-07	2008-03-26	日立建機株式会社	建設機械の油圧制御装置
JP6487368B2 (ja) *	2016-03-31	2019-03-20	日立建機株式会社	可変容量型斜板式油圧ポンプの容量制御装置
US20190183048A1 (en) *	2017-12-18	2019-06-20	Macdon Industries Ltd.	Engine Speed Control and Ground Speed Control of a Hydraulically Driven Tractor
CN113944671B (zh) *	2021-11-09	2024-06-14	中国铁建重工集团股份有限公司	一种双动力双模式液压泵控制系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3963378A (en) *	1975-06-04	1976-06-15	Caterpillar Tractor Co.	Part throttle control -- pump override

1976
- 1976-03-15 US US05/666,723 patent/US4017216A/en not_active Expired - Lifetime
- 1976-10-20 CA CA263,749A patent/CA1043226A/en not_active Expired
1977
- 1977-02-09 BR BR7700811A patent/BR7700811A/pt unknown
- 1977-02-21 BE BE1007966A patent/BE851647A/xx not_active IP Right Cessation
- 1977-02-26 JP JP1977021961U patent/JPS52121802U/ja active Pending

Also Published As

Publication number	Publication date
CA1043226A (en)	1978-11-28
US4017216A (en)	1977-04-12
BE851647A (2)	1977-08-22
JPS52121802U (2)	1977-09-16

Publication	Publication Date	Title
BR7706440A (pt)	1978-06-27	Sistema de dialise
NO764307L (no)	1977-07-27	Fluiduminfusjonspumpesystem.
BR7706096A (pt)	1978-06-20	Bomba de deslocamento variavel
SE7710849L (sv)	1978-03-30	Hydraulsystem
BR7700092A (pt)	1977-09-06	Sistema de fluido hidraulico
NO772472L (no)	1978-05-09	Hydraulisk slaginnretning.
BR7706441A (pt)	1978-06-27	Sistema de dialise
NL7711078A (nl)	1978-04-20	Dialyse-inrichting.
NL7707675A (nl)	1978-01-17	Tandwielpomp.
NL7707708A (nl)	1978-01-17	Werkzuigerinrichting.
NL7702091A (nl)	1977-08-29	Tandwielpomp.
NL7708927A (nl)	1978-02-15	Zeeradarstelsel.
BE851646A (nl)	1977-08-22	Hydraulish systeem
NL7802149A (nl)	1979-06-06	Rotatieverdringerpomp.
NL7711281A (nl)	1978-04-18	Dialyse-inrichting.
BE851648A (nl)	1977-08-22	Hydraulisch systeem
NL7712575A (nl)	1978-05-30	Hydraulisch besturingsorgaan.
NL7704411A (nl)	1977-10-31	Hydraulische inrichting.
SE7612670L (sv)	1977-09-16	Hydraulanleggning
SE7614245L (sv)	1978-06-18	Hydrauliskt system
NL7606451A (nl)	1977-12-19	Hydraulische hei-inrichting.
BR7703521A (pt)	1978-03-14	Sistema hidraulico
SE7613642L (sv)	1978-06-07	Hydraulsystem
IT1082267B (it)	1985-05-21	Dispositivo idraulico di sterzatura
BE852333A (fr)	1977-07-01	Systemes de pompage