JPS57127107A - Pressure fluid circuit - Google Patents

Pressure fluid circuit

Info

Publication number
JPS57127107A
JPS57127107A JP56012630A JP1263081A JPS57127107A JP S57127107 A JPS57127107 A JP S57127107A JP 56012630 A JP56012630 A JP 56012630A JP 1263081 A JP1263081 A JP 1263081A JP S57127107 A JPS57127107 A JP S57127107A
Authority
JP
Japan
Prior art keywords
scraping plate
flow collecting
pressure fluid
simultaneous operation
flowed
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.)
Granted
Application number
JP56012630A
Other languages
Japanese (ja)
Other versions
JPS5932682B2 (en
Inventor
Megumi Miyake
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.)
Nabco Ltd
Original Assignee
Nabco 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
Application filed by Nabco Ltd filed Critical Nabco Ltd
Priority to JP56012630A priority Critical patent/JPS5932682B2/en
Publication of JPS57127107A publication Critical patent/JPS57127107A/en
Publication of JPS5932682B2 publication Critical patent/JPS5932682B2/en
Expired legal-status Critical Current

Links

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
    • 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
    • F15B2211/31—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
    • F15B2211/40507—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
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40546—Flow control characterised by the type of flow control means or valve with flow combiners
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To provide a free simultaneous operation and a single operation by a method wherein a running of a hydraulic shovel and a simultaneous operation of the scraping plate may be performed in a double pump circuit and at the same time a signal operation of only the scraping plate may be performed. CONSTITUTION:A flow collecting device 12 arranged between the first and second discharging circuits 3a, 3b and the third supplying circuit 4 is composed of the first and second flow collecting passage 37a, 37b in which the check valves 35a, 35b are connected in series with the throttle valves 36a, 36b, respectively. In order to operate only the scraping plate H, a direction changing-over valve 5 is operated, resulting in that a discharged fluid from the first pump 1a is flowed from the third supplying circuit 4 to the cylinder 11. In order to operate the scraping plate H during a running operation, the direction changing-over valves 32a, 32b and 5 are operated simultaneously. At this time, a part of the discharged pressure fluid from the first and second pumps 1a and 1b is flowed in to the cylinder 11 through a flow collecting device 12 to enable a simultaneous operation of the device.
JP56012630A 1981-01-29 1981-01-29 pressure fluid circuit Expired JPS5932682B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012630A JPS5932682B2 (en) 1981-01-29 1981-01-29 pressure fluid circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012630A JPS5932682B2 (en) 1981-01-29 1981-01-29 pressure fluid circuit

Publications (2)

Publication Number Publication Date
JPS57127107A true JPS57127107A (en) 1982-08-07
JPS5932682B2 JPS5932682B2 (en) 1984-08-10

Family

ID=11810692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012630A Expired JPS5932682B2 (en) 1981-01-29 1981-01-29 pressure fluid circuit

Country Status (1)

Country Link
JP (1) JPS5932682B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60144432A (en) * 1983-12-30 1985-07-30 Handoothe- Kogyo Kk Oil-pressure circuit for excavator with dozer
JPH01120562U (en) * 1988-02-01 1989-08-15

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60144432A (en) * 1983-12-30 1985-07-30 Handoothe- Kogyo Kk Oil-pressure circuit for excavator with dozer
JPH01120562U (en) * 1988-02-01 1989-08-15

Also Published As

Publication number Publication date
JPS5932682B2 (en) 1984-08-10

Similar Documents

Publication Publication Date Title
JPS57154503A (en) Pressurized fluid feeder
JPS57134007A (en) Fluid pressure circuit of three pumps
JPS57127107A (en) Pressure fluid circuit
EP0404946A4 (en) Hydraulic circuit device of construction vehicle
JPS5766243A (en) Liquid pressure circuit for construction machinery
JPS5779280A (en) Pressure liquid supplying apparatus
JPS57105576A (en) Driving device of oil hydraulic pump with fly wheel
JPS5491688A (en) Hydraulic circuit of mold pressing device
JPS57205638A (en) Oil-pressure circuit for oil-pressure shovel
JPS56124704A (en) Regenerating circuit in fluidic pressure circuit
JPS5776304A (en) Hydraulic circuit for construction machinery
JPS57184709A (en) Multiple hydraulic cylinder device
SU620686A2 (en) Hydraulic distributor
JPS5586907A (en) Three-pump hydraulic circuit for construction machinery or the like
SU831633A1 (en) Hydraulic press control system
JPS5718526A (en) Hydraulic equipment for dump truck or the like
JPS5590703A (en) Oil hydraulic circuit of oil hydraulic shovel
JPS57140434A (en) Oil-pressure circuit for oil-pressure shovel
SU1268679A1 (en) Rack for testing valve units of bulldozer
JPS56159584A (en) Oil pressure control circuit for construction machine
JPS56159438A (en) Hydraulic circuit of construction machine with attachment
EP0092315A3 (en) Hydraulic pump control
SU1214858A1 (en) Versions of double-circuit hydraulic drive of earth-moving machine
KR910006552Y1 (en) Variation devices of fluid pressure
JPS57182810A (en) Controller for supplying fluid to plural loads