GB1290247A – – Google Patents
GB1290247A – – Google Patents
Info
Publication number
GB1290247A
GB1290247A
GB1290247DA
GB1290247A
GB 1290247 A
GB1290247 A
GB 1290247A
GB 1290247D A
GB1290247D A
GB 1290247DA
GB 1290247 A
GB1290247 A
GB 1290247A
Authority
GB
United Kingdom
Prior art keywords
valve
line
valves
delivery
lines
Prior art date
1969-10-15
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
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.)
1969-10-15
Filing date
1970-10-14
Publication date
1972-09-20
1970-10-14
Application filed
filed
Critical
1972-09-20
Publication of GB1290247A
publication
Critical
patent/GB1290247A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F15B11/16—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
B—PERFORMING OPERATIONS; TRANSPORTING
B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B62D—MOTOR VEHICLES; TRAILERS
B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
B62D11/18—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied hydraulically
B62D11/183—Control systems therefor
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
F15B2211/20—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
F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
F15B2211/25—Pressure control functions
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
F15B2211/31—Directional control characterised by the positions of the valve element
F15B2211/3105—Neutral or centre positions
F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
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
F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow 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
F15B2211/40—Flow control
F15B2211/46—Control of flow in the 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
F15B2211/60—Circuit components or control therefor
F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
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
Abstract
1290247 Excavators LINDE AG 14 Oct 1970 [15 Oct 1969] 48716/70 Heading E1F [Also in Division Fl] Double-acting hydraulic motors 21, 32 suitable for actuating an excavator bucket are respectively connected to conventional open centre distributing valves 12, 35 which in their neutral position shown connect the delivery lines 5, 6 of pumps 1, 2 to return lines 22, 43 and at least one of lines 22, 43 has an auxiliary shut off valve 47, 52 and a branch line 48, 53 extending from a point between the shut-off valve and its associated distributing valve through a non-return valve 49, 54 to the delivery line of the other pump whereby when said at least one shut-off valve is closed and its associated distributing valve is in neutral the delivery of both pumps is available to the other distributing valve. The pumps 1, 2 which are of variable delivery also serve motors 15, 18 through distributing valves 10, 11 and motors 30, 31 through valves 33, 34; valves 10, 11, 12 being actuated by hydraulic pressure in lines 24 to 29, valves 33, 34, 35 by pressure in lines 36 to 41 and valves 47, 52 by pressure in lines 50, 55. In operation only one of each group of motors is operable at a time and only one or other of motors 21, 32 can be supplied with the combined delivery of both pumps. With valves 10, 11, 12, 33 and 34 in neutral and line 40 pressurized to actuate valve 35 pressure in a branch of line 40 gains access through a valve 51 to a line 50 to the actuator of valve 47 which is thus closed so that the delivery of pump 1 in return line 22 is directed through line 48 and valve 49 to the delivery line 6 of pump 2 which is connected by valve 35 to motor 32.
GB1290247D
1969-10-15
1970-10-14
Expired
GB1290247A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19691952034
DE1952034A1
(en)
1969-10-15
1969-10-15
Control device for a hydraulic system and valve for this
Publications (1)
Publication Number
Publication Date
GB1290247A
true
GB1290247A
(en)
1972-09-20
Family
ID=5748310
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1290247D
Expired
GB1290247A
(en)
1969-10-15
1970-10-14
Country Status (6)
Country
Link
US
(1)
US3720059A
(en)
JP
(1)
JPS5417114B1
(en)
DE
(1)
DE1952034A1
(en)
FR
(1)
FR2065949A5
(en)
GB
(1)
GB1290247A
(en)
SE
(1)
SE366098B
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS50119178A
(en)
*
1974-03-11
1975-09-18
Families Citing this family (60)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2148331B2
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*
1971-08-06
1974-03-29
Poclain Sa
DE2148502B2
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*
1971-09-29
1978-11-02
G.L. Rexroth Gmbh, 8770 Lohr
Single or multi-circuit hydraulic system
US4030623A
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*
1971-12-13
1977-06-21
Caterpillar Tractor Co.
Hydraulic circuitry for an excavator
BE792618A
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1971-12-13
1973-06-12
Caterpillar Tractor Co
Set of hydraulic control valves.
US3922855A
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*
1971-12-13
1975-12-02
Caterpillar Tractor Co
Hydraulic circuitry for an excavator
BR7204458D0
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*
1972-06-16
1974-09-05
Orenstein & Koppel Ag
PAS WHEEL EXCAVATOR AND HYDRAULIC ACTUALLY
DE2364282C3
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1973-12-22
1983-01-13
O & K Orenstein & Koppel Ag, 1000 Berlin
Circuit arrangement for hydraulic motors
US4179981A
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*
1975-10-30
1979-12-25
Poclain
Device for sequentially supplying several hydraulic motors
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1976-03-25
1977-05-24
Koehring Company
Load sensing hydraulic circuit having power matching means
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1976-08-24
1978-03-14
Caterpillar Tractor Co.
Dual pump hydraulic control system with predetermined flow crossover provision
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1976-12-02
1980-07-01
Caterpillar Tractor Co.
Three-circuit fluid system having controlled fluid combining
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1976-12-03
1978-09-12
Caterpillar Tractor Co.
Fluid control system for multiple circuited work elements
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1977-03-17
1978-02-14
Caterpillar Tractor Co.
Fluid control system with priority flow
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1977-03-17
1979-03-06
Caterpillar Tractor Co.
Crossover plural circuit fluid system
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1978-08-18
1981-04-21
S.R.M. Hydromekanik Aktiebolag
Hydraulic valve system for controlling particularly a vehicle gearbox
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1978-08-28
1980-06-24
Caterpillar Tractor Co.
Apparatus for producing different flow rates of a fluid
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1979-06-27
1983-01-25
Hitachi Construction Machinery Co., Ltd.
Drive system for construction machinery and method of controlling hydraulic circuit means thereof
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1979-07-25
1981-02-05
Zahnradfabrik Friedrichshafen
HIGH PRESSURE PUMP WITH PRESSURE REGULATOR
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1979-08-30
1981-09-01
Caterpillar Tractor Co.
Lock valve with variable length piston and hydraulic system for a work implement using the same
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1981-09-17
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Control unit with slide valve – has second flow channel with throttle and sealing valve, with connected actuators
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1980-07-07
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JPS5751006A
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1980-09-08
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Composite control valve for conflluence
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1980-11-24
1982-06-24
Linde Ag, 6200 Wiesbaden
Drive system with at least two secondary systems
DE3044144A1
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1980-11-24
1982-09-09
Linde Ag, 6200 Wiesbaden
HYDROSTATIC DRIVE SYSTEM WITH ONE ADJUSTABLE PUMP AND SEVERAL CONSUMERS
US4372193A
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1980-12-24
1983-02-08
Caterpillar Tractor Co.
System with constant force actuator
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Caterpillar Tractor Co.
System with constant force actuator
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Hydraulic pump interlock system
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Hitachi, Ltd.
Hydraulic drive system for civil engineering and construction machinery
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1981-05-02
1987-03-12
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Hydraulic circuit system for civil engineering and architectural machinery
JPS6056923B2
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1981-05-14
1985-12-12
日立建機株式会社
hydraulic circuit
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1981-05-14
1985-12-12
日立建機株式会社
hydraulic circuit
DE3221160C2
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1982-06-04
1986-05-07
Mannesmann Rexroth GmbH, 8770 Lohr
Control valve device consisting of two control blocks for several hydraulic drives, especially for mobile devices
US4545202A
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1983-10-24
1985-10-08
Sundstrand Corporation
Pressure-regulating system
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1986-02-04
1987-12-23
Chs Vickers Spa
HYDRAULIC CONTROL CIRCUIT FOR WORKING BODIES OF EARTH-MOVING MACHINES WITH CENTRALIZED ACTUATOR BRAKING
US4787204A
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1987-09-28
1988-11-29
J. I. Case Company
Common relief valve
JP2511629Y2
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1988-05-16
1996-09-25
株式会社小松製作所
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EP0393195B1
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Kabushiki Kaisha Kobe Seiko Sho
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DE69015118T2
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1989-03-24
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VALVE ARRANGEMENT AND HYDRAULIC DRIVE SYSTEM.
KR940009219B1
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히다찌 겐끼 가부시기가이샤
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Rexroth Mannesmann Gmbh
Control valve device with two control blocks and pump control for several hydraulic drives
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Hitachi Construction Machinery Co., Ltd.
Hydraulic driving system in construction machine
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1998-09-14
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Komatsu Ltd
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日立建機株式会社
Hydraulic drive system for civil engineering and construction machinery
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Komatsu Mining Germany Gmbh
Device and method for controlling a hydraulic system of a construction machine, in particular a hydraulic excavator
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HYDRAULIC EQUIPMENT FOR THE STRINGING OF CONDUCTORS FOR ELECTRICAL PRODUCTS
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1969
1969-10-15
DE
DE19691952034
patent/DE1952034A1/en
not_active
Ceased
1970
1970-10-14
FR
FR7037120A
patent/FR2065949A5/fr
not_active
Expired
1970-10-14
GB
GB1290247D
patent/GB1290247A/en
not_active
Expired
1970-10-14
US
US00080665A
patent/US3720059A/en
not_active
Expired – Lifetime
1970-10-14
SE
SE13913/70A
patent/SE366098B/xx
unknown
1970-10-15
JP
JP9083070A
patent/JPS5417114B1/ja
active
Pending
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS50119178A
(en)
*
1974-03-11
1975-09-18
JPS539346B2
(en)
*
1974-03-11
1978-04-05
Also Published As
Publication number
Publication date
DE1952034A1
(en)
1971-04-22
FR2065949A5
(en)
1971-08-06
SE366098B
(en)
1974-04-08
US3720059A
(en)
1973-03-13
JPS5417114B1
(en)
1979-06-27
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(en)
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Valve assembly
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(en)
1969-07-16
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Legal Events
Date
Code
Title
Description
1973-01-31
PS
Patent sealed [section 19, patents act 1949]
1984-06-20
PCNP
Patent ceased through non-payment of renewal fee
