JPS5628944A - Bucket operating circuit - Google Patents

Bucket operating circuit

Info

Publication number
JPS5628944A
JPS5628944A JP10190979A JP10190979A JPS5628944A JP S5628944 A JPS5628944 A JP S5628944A JP 10190979 A JP10190979 A JP 10190979A JP 10190979 A JP10190979 A JP 10190979A JP S5628944 A JPS5628944 A JP S5628944A
Authority
JP
Japan
Prior art keywords
bucket
oil
check valve
valve
circuit
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
JP10190979A
Other languages
Japanese (ja)
Other versions
JPS6252090B2 (en
Inventor
Ryutaro Yoritomi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP10190979A priority Critical patent/JPS5628944A/en
Publication of JPS5628944A publication Critical patent/JPS5628944A/en
Publication of JPS6252090B2 publication Critical patent/JPS6252090B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)

Abstract

PURPOSE: To enable the operation of a breaker while the bucket being in a grabbing operation, without performing a switching operation by a switching valve and the like, by providing a throttle valve having a check valve in the oil-hydraulic circuit of a pilot operating check valve.
CONSTITUTION: When the bucket 12 is closed, a reversible switching valve 2 is switched over to an A port, thereby the pressure oil being supplied to the an A port, bucket-closing side of a bucket opening and closing cylinder 13 from the reversible switching valve 2 through the intermemediary of the pilot operating check valve 16, while the returning oil being returned to tank 23 through a circuit (b). At this time, the pressure oil or the returning oil or the returning oil passes the side of the check valve of a throttle valve 40 with the check valve provided in a bucket closing-side pressure oil supplying circuit (a) or the returring oil circuit (b), and is subjected to no resistance.
COPYRIGHT: (C)1981,JPO&Japio
JP10190979A 1979-08-10 1979-08-10 Bucket operating circuit Granted JPS5628944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10190979A JPS5628944A (en) 1979-08-10 1979-08-10 Bucket operating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10190979A JPS5628944A (en) 1979-08-10 1979-08-10 Bucket operating circuit

Publications (2)

Publication Number Publication Date
JPS5628944A true JPS5628944A (en) 1981-03-23
JPS6252090B2 JPS6252090B2 (en) 1987-11-04

Family

ID=14313029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10190979A Granted JPS5628944A (en) 1979-08-10 1979-08-10 Bucket operating circuit

Country Status (1)

Country Link
JP (1) JPS5628944A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0376055U (en) * 1989-11-22 1991-07-30
JP2010174546A (en) * 2009-01-30 2010-08-12 Kubota Corp Front loader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0376055U (en) * 1989-11-22 1991-07-30
JP2010174546A (en) * 2009-01-30 2010-08-12 Kubota Corp Front loader

Also Published As

Publication number Publication date
JPS6252090B2 (en) 1987-11-04

Similar Documents

Publication Publication Date Title
JPS562432A (en) Shock reducing device for number of cylinder controlling engine
JPS57205639A (en) Closing device for oil-pressure circuit for inertia-mass driving
JPS5628944A (en) Bucket operating circuit
JPS5614605A (en) Hydraulic driving method and system for actuator
JPS56141406A (en) Compact cylinder
JPS5680564A (en) Selector valve device
JPS5740105A (en) Hydraulic pressure circuit controller
JPS5560777A (en) Control valve
JPS54156985A (en) Safety device of hydraulic circuit having a plurality of actuators
JPS55108540A (en) Bucket operating circuit
JPS5642704A (en) Controller in hydraulic circuit
JPS556008A (en) Mechanism for limiting travel of hydraulic cylinder
JPS57103904A (en) Pressure increasing device
JPS5620803A (en) Hydraulic circuit
JPS5594003A (en) Selecting device for hydraulic cylinder
JPS57103909A (en) Safe operation circuit in work machine using air pressure
JPS5652507A (en) Bypass valve test device for nuclear turbine
JPS5761802A (en) Hydraulic system for driving cylinder
JPS5620808A (en) Hydraulic pressure control system for single acting hydraulic cylinder
JPS57151433A (en) Safety device of power transfer shaft in mobile agricultural machine
JPS54121378A (en) Hydraulic cylinder drive circuit
JPS5635802A (en) Hydraulic circuit for takeout of divergent pressure oil such as pilot pressure oil
JPS5768258A (en) Injector for die casting machine
JPS5641464A (en) Propeller water wheel control device
JPS5673731A (en) Loading shovel