GB1405724A - Hydraulic control for hydraulically operated working devices - Google Patents

Hydraulic control for hydraulically operated working devices

Info

Publication number
GB1405724A
GB1405724A GB441673A GB441673A GB1405724A GB 1405724 A GB1405724 A GB 1405724A GB 441673 A GB441673 A GB 441673A GB 441673 A GB441673 A GB 441673A GB 1405724 A GB1405724 A GB 1405724A
Authority
GB
United Kingdom
Prior art keywords
control unit
valve block
hydraulic control
pump
oil
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
GB441673A
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.)
Weyhausen G F
Original Assignee
Weyhausen G F
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 Weyhausen G F filed Critical Weyhausen G F
Publication of GB1405724A publication Critical patent/GB1405724A/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
    • 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
    • F15B2211/30505—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
    • F15B2211/3056—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
    • F15B2211/31—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
    • F15B2211/70—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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

1405724 Hydraulic control circuits G F WEYHAUSEN 29 Jan 1973 [27 Jan 1972] 4416/73 Heading F1P An hydraulic control circuit, Fig. 1, including at least two power outlets and two circuits each with a pump, 1, 2 and a valve block I, II comprising control units 3, 4, 5 and 6, 7, 8, 9 with six-way valves, has the main power outlets linked to valve block II and the oil delivered by the pump 1 passes through the valve block I when the valves are in a neutral position and flows, with the oil from pump 2 through the second valve block. Also, control unit 9 is connected to control unit 4, a power outlet is connected to each control unit, and control unit 9 is series connected whilst the rest are connected in parallel. This arrangement ensures that in an excavator, for example, the three main movements, i.e. hoisting, extending and retracting, and shovelling, can be operated in both directions with the oil flow from both pumps. In addition propulsion of the vehicle can be carried out whilst the other working movements are taking place.
GB441673A 1972-01-27 1973-01-29 Hydraulic control for hydraulically operated working devices Expired GB1405724A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722203713 DE2203713A1 (en) 1972-01-27 1972-01-27 CIRCUIT FOR HYDROSTATICALLY OPERATED WORKING DEVICES

Publications (1)

Publication Number Publication Date
GB1405724A true GB1405724A (en) 1975-09-10

Family

ID=5834138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB441673A Expired GB1405724A (en) 1972-01-27 1973-01-29 Hydraulic control for hydraulically operated working devices

Country Status (5)

Country Link
DE (1) DE2203713A1 (en)
FR (1) FR2169397B1 (en)
GB (1) GB1405724A (en)
IT (1) IT977669B (en)
SE (1) SE402609B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070005A1 (en) * 1981-07-10 1983-01-19 Hitachi Construction Machinery Co., Ltd. Hydraulic fluid circuit of hydraulic shovel
WO2005038267A1 (en) * 2003-10-17 2005-04-28 Bengt Olsson A selecting and directing arrangement

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5847109Y2 (en) * 1977-10-31 1983-10-27 株式会社クボタ Circuit structure of backhoe and dozer work vehicle
JPS6129813Y2 (en) * 1980-07-07 1986-09-02
KR870000506B1 (en) * 1981-05-02 1987-03-12 니시모도 후미히라(西元文平) Hydraulic circuit system for civil engineering and architectural machinery
IT1187892B (en) * 1986-02-04 1987-12-23 Chs Vickers Spa HYDRAULIC CONTROL CIRCUIT FOR WORKING BODIES OF EARTH-MOVING MACHINES WITH CENTRALIZED ACTUATOR BRAKING

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768499A (en) * 1953-04-20 1956-10-30 John S Pilch Hydraulic system comprising multiple pump and ram units
DE1426555A1 (en) * 1964-07-27 1968-11-21 Prerovske Strojirny Np Device for controlling the hydraulic drive units of an earth moving machine, in particular an excavator
GB1145531A (en) * 1966-03-14 1969-03-19 Hydraulic Drilling Equipment L Hydraulic system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070005A1 (en) * 1981-07-10 1983-01-19 Hitachi Construction Machinery Co., Ltd. Hydraulic fluid circuit of hydraulic shovel
WO2005038267A1 (en) * 2003-10-17 2005-04-28 Bengt Olsson A selecting and directing arrangement

Also Published As

Publication number Publication date
SE402609B (en) 1978-07-10
IT977669B (en) 1974-09-20
DE2203713A1 (en) 1973-08-09
FR2169397A1 (en) 1973-09-07
FR2169397B1 (en) 1978-08-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee