BE792617A - Circuit hydraulique pour un excavateur. - Google Patents

Circuit hydraulique pour un excavateur.

Info

Publication number: BE792617A
Authority: BE; Belgium
Prior art keywords: excavator; hydraulic circuit; hydraulic; circuit
Prior art date: 1971-12-13

Application number

Other languages

English (en)

French (fr)

Inventor

J W Bridwell

D L Hopkins

K R Lohbauer

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.)

1971-12-13

Publication date

1973-06-12

1973-06-12 Publication of BE792617A publication Critical patent/BE792617A/xx

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
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- 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
- 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
- E02F9/2282—Systems using center bypass type changeover 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
- E02F9/2278—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

Landscapes

Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Civil Engineering (AREA)
Structural Engineering (AREA)
Mechanical Engineering (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Operation Control Of Excavators (AREA)
Fluid-Pressure Circuits (AREA)

BE792617D 1971-12-13 Circuit hydraulique pour un excavateur. BE792617A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US20702771A	1971-12-13	1971-12-13

Publications (1)

Publication Number	Publication Date
BE792617A true BE792617A (fr)	1973-06-12

Family

ID=22768908

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE792617D BE792617A (fr)	1971-12-13		Circuit hydraulique pour un excavateur.

Country Status (7)

Country	Link
JP (1)	JPS5517246B2 (th)
BE (1)	BE792617A (th)
CA (1)	CA982089A (th)
DE (1)	DE2261627C2 (th)
FR (1)	FR2163588B1 (th)
GB (1)	GB1421177A (th)
SE (1)	SE394304B (th)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3990236A (en) *	1976-02-23	1976-11-09	Caterpillar Tractor Co.	Load responsive pump controls of a fluid system
US3998053A (en) *	1976-03-15	1976-12-21	Caterpillar Tractor Co.	Three-pump - three-circuit fluid system of a work vehicle having controlled fluid-combining means
US4078681A (en) *	1976-08-24	1978-03-14	Caterpillar Tractor Co.	Dual pump hydraulic control system with predetermined flow crossover provision
JPS5847109Y2 (ja) *	1977-10-31	1983-10-27	株式会社クボタ	バックホウ兼ド−ザ作業車の回路構造
US4214445A (en) *	1979-05-14	1980-07-29	Dresser Industries, Inc.	Hydraulic circuitry for raise drill apparatus
JPS6129813Y2 (th) *	1980-07-07	1986-09-02
JPS6138204A (ja) *	1984-07-30	1986-02-24	Toshiba Mach Co Ltd	多連油圧切換弁のための多連パイロツト弁
AU2003271543A1 (en) *	2002-11-07	2004-06-07	Bosch Rexroth Ag	Double-circuit hydraulic system
DE10255738A1 (de) *	2002-11-07	2004-05-27	Bosch Rexroth Ag	Hydraulisches Zweikreissystem
GB2395769B (en) *	2002-11-27	2006-02-08	Komatsu Uk Ltd	Cavitation prevention system of hydraulic travelling vehicle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DD80869A (th) *
AT243194B (de) *	1963-04-24	1965-10-25	Orenstein & Koppel Ag	Schaltung für Hydraulikbagger
DE1634915C3 (de) *	1967-03-10	1981-02-12	O & K Orenstein & Koppel Ag	Schaltung für Hydraulikbagger
AT291330B (de) *	1968-06-15	1971-07-12	Frisch Geb Kg Eisenwerk	Hydraulische Betätigungsvorrichtung für die Arbeitswerkzeuge von Erdbearbeitungsmachinen

0
- BE BE792617D patent/BE792617A/xx not_active IP Right Cessation
1972
- 1972-12-06 CA CA158,237A patent/CA982089A/en not_active Expired
- 1972-12-13 JP JP12448172A patent/JPS5517246B2/ja not_active Expired
- 1972-12-13 FR FR7244397A patent/FR2163588B1/fr not_active Expired
- 1972-12-13 GB GB5757972A patent/GB1421177A/en not_active Expired
- 1972-12-13 SE SE1629472A patent/SE394304B/xx unknown
- 1972-12-13 DE DE19722261627 patent/DE2261627C2/de not_active Expired

Also Published As

Publication number	Publication date
FR2163588B1 (th)	1981-04-30
JPS5517246B2 (th)	1980-05-10
JPS4865702A (th)	1973-09-10
DE2261627A1 (de)	1973-06-28
FR2163588A1 (th)	1973-07-27
SE394304B (sv)	1977-06-20
DE2261627C2 (de)	1983-10-20
GB1421177A (en)	1976-01-14
CA982089A (en)	1976-01-20

Publication	Publication Date	Title
BE784916Q (fr)	1972-10-02	Transmission hydrostatique pour chargeuse
OA03918A (fr)	1975-08-14	Raccord pour canalisations.
BE791834A (nl)	1973-03-16	Graafmachine
DK128330B (da)	1974-04-08	Gravemaskine.
NL174704C (nl)	1984-08-01	Gietschuif.
CH551888A (de)	1974-07-31	Tiefladeanhaengerfahrzeug.
OA03969A (fr)	1979-08-31	Barrage hydraulique amovible.
SE394304B (sv)	1977-06-20	Hydraulsystem for grevmaskin
NL159751B (nl)	1979-03-15	Hydraulische spanvijzel.
CH530519A (fr)	1972-11-15	Puits pour égout non visitable
CH553684A (de)	1974-09-13	Tunnel guide-cable de commande pour cycles et cyclomoteurs.
CH556100A (fr)	1974-11-15	Interrupteur pour circuit supraconducteur.
NL166088C (nl)	1981-06-15	Baggerinrichting.
BE766051A (fr)	1971-10-21	Barge pour caravane
NL7411067A (nl)	1975-04-29	Gietbuis.
NL146077B (nl)	1975-06-16	Hydraulische richtinrichting.
NL158877B (nl)	1978-12-15	Agitatiebaggerinrichting.
BE789358A (fr)	1973-03-27	Excavatrice
NO780783L (no)	1973-07-03	Bindemiddel.
NL166515C (nl)	1981-08-17	Graafmachine.
CH556623A (de)	1974-11-29	Fernsprechapparat.
NL163849C (nl)	1980-10-15	Graafmachine.
BR7207251D0 (pt)	1973-09-13	Aparelho escavador
FI49446C (fi)	1975-06-10	Öljypuomi.
OA04059A (fr)	1979-10-15	Scène pour théâtre.

Legal Events

Date	Code	Title	Description
1992-06-30	RE	Patent lapsed	Owner name: CATERPILLAR INC. Effective date: 19911231

Date

Code

Title

Description

1992-06-30

Patent lapsed

Owner name: CATERPILLAR INC.

Effective date: 19911231