[go: up one dir, main page]

DE3271311D1 - Hydrostatic drive system for civil engineering and construction machinery - Google Patents

Hydrostatic drive system for civil engineering and construction machinery

Info

Publication number
DE3271311D1
DE3271311D1 DE8282101590T DE3271311T DE3271311D1 DE 3271311 D1 DE3271311 D1 DE 3271311D1 DE 8282101590 T DE8282101590 T DE 8282101590T DE 3271311 T DE3271311 T DE 3271311T DE 3271311 D1 DE3271311 D1 DE 3271311D1
Authority
DE
Germany
Prior art keywords
drive system
civil engineering
construction machinery
hydrostatic drive
hydrostatic
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
DE8282101590T
Other languages
German (de)
Inventor
Nobuya Okabe
Fumiki Nakagiri
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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
Priority claimed from JP56029320A external-priority patent/JPS57146842A/en
Priority claimed from JP56087553A external-priority patent/JPS57205636A/en
Priority claimed from JP57028556A external-priority patent/JPS58146632A/en
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Application granted granted Critical
Publication of DE3271311D1 publication Critical patent/DE3271311D1/en
Expired legal-status Critical Current

Links

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
    • E02F9/2221—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
    • 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
    • F15B2211/20576—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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
    • F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple 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
    • F15B2211/30—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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant 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
    • F15B2211/455—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
    • F15B2211/70—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)
  • Fluid-Pressure Circuits (AREA)
DE8282101590T 1981-03-03 1982-03-02 Hydrostatic drive system for civil engineering and construction machinery Expired DE3271311D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP56029320A JPS57146842A (en) 1981-03-03 1981-03-03 Oil-pressure circuit for civil and construction machinery
JP56087553A JPS57205636A (en) 1981-06-09 1981-06-09 Oil-pressure circuit for oil-pressure working machine
JP57028556A JPS58146632A (en) 1982-02-24 1982-02-24 Oil-pressure drive system for civil work and construction machinery

Publications (1)

Publication Number Publication Date
DE3271311D1 true DE3271311D1 (en) 1986-07-03

Family

ID=27286237

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282101590T Expired DE3271311D1 (en) 1981-03-03 1982-03-02 Hydrostatic drive system for civil engineering and construction machinery

Country Status (3)

Country Link
EP (1) EP0059471B1 (en)
KR (1) KR870000505B1 (en)
DE (1) DE3271311D1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58146630A (en) * 1982-02-25 1983-09-01 Hitachi Constr Mach Co Ltd Oil-pressure circuit for oil-pressure working machine
DE3764824D1 (en) * 1986-01-25 1990-10-18 Hitachi Construction Machinery HYDRAULIC DRIVE SYSTEM.
US5115835A (en) * 1990-01-26 1992-05-26 Zexel Corporation Stacked type hydraulic control valve system
JP2702646B2 (en) * 1992-08-07 1998-01-21 株式会社クボタ Hydraulic circuit structure of backhoe device
JPH0776859A (en) * 1993-09-09 1995-03-20 Hitachi Constr Mach Co Ltd Hydraulic drive for construction machinery
JP2892939B2 (en) * 1994-06-28 1999-05-17 日立建機株式会社 Hydraulic circuit equipment of hydraulic excavator
AU720849B2 (en) * 1996-03-28 2000-06-15 Clark Equipment Company Multifunction valve stack
JP3497947B2 (en) * 1996-06-11 2004-02-16 日立建機株式会社 Hydraulic drive
EP1937904B1 (en) * 2005-10-14 2016-12-14 Volvo Construction Equipment AB A working machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2148502B2 (en) * 1971-09-29 1978-11-02 G.L. Rexroth Gmbh, 8770 Lohr Single or multi-circuit hydraulic system
US4030623A (en) * 1971-12-13 1977-06-21 Caterpillar Tractor Co. Hydraulic circuitry for an excavator
DE2440251A1 (en) * 1974-08-22 1976-03-04 Linde Ag Control system combining output of two pumps - combined output distributed to all users
US4210061A (en) * 1976-12-02 1980-07-01 Caterpillar Tractor Co. Three-circuit fluid system having controlled fluid combining
US4112821A (en) * 1976-12-03 1978-09-12 Caterpillar Tractor Co. Fluid control system for multiple circuited work elements
JPS5847109Y2 (en) * 1977-10-31 1983-10-27 株式会社クボタ Circuit structure of backhoe and dozer work vehicle
US4207740A (en) * 1979-06-12 1980-06-17 Akermans Verkstad Ab Valve blocks, in particular for hydraulic excavators

Also Published As

Publication number Publication date
EP0059471B1 (en) 1986-05-28
EP0059471A3 (en) 1983-09-21
EP0059471A2 (en) 1982-09-08
KR870000505B1 (en) 1987-03-12
KR830009399A (en) 1983-12-21

Similar Documents

Publication Publication Date Title
DE3163562D1 (en) Civil engineering and construction machinery with hydraulic drive system
DE3566149D1 (en) Hydrostatic or hydrodynamic mechanical seal
EP0187682A3 (en) Hydrostatic load-sense steering system
DE3276130D1 (en) Hydrostatic clutch
IT8423933A0 (en) BRICK FOR SCALVES AS WELL AS PROCEDURE FOR THE CONSTRUCTION OF A CONSOLIDATION SYSTEM FOR SLOPES PRODUCED WITH IT.
JPS5719429A (en) Loader type civil engineering machine
GB8502839D0 (en) Hydrostatic hydraulic coupling
DE3271311D1 (en) Hydrostatic drive system for civil engineering and construction machinery
RO82946A (en) HYDROSTATIC DIRECTION SYSTEM
ZA823400B (en) Power-on-demand hydraulic system
GB2090917B (en) Hydraulic pump interlock system
AU8325082A (en) Rock bolt grouting system
GB8403449D0 (en) External hydraulic driving system
BR8502830A (en) HYDROSTATIC TRANSMISSION SHAFT SET
GB8508296D0 (en) Driven piling system
ZA841931B (en) Hydraulic system with proportional control
HUT44817A (en) Shift system for civil engineering constructions
GB8311702D0 (en) Hydraulic jacking system
JPS57117082A (en) Alarm for civil engineering and construction machine
GB8713379D0 (en) Hydrostatic face seal & bearing
JPS5718849A (en) Hydrostatic driving system
AU5620186A (en) The construction of tunnels or pipes for use in civil engineering works
JPS57193605A (en) Construction in extrusion engineering method
GB2071229B (en) Hydrostatic bearing systems
AU8097882A (en) Hydrostatic seal

Legal Events

Date Code Title Description
8364 No opposition during term of opposition