JPS55108540A - Bucket operating circuit - Google Patents

Bucket operating circuit

Info

Publication number
JPS55108540A
JPS55108540A JP1460079A JP1460079A JPS55108540A JP S55108540 A JPS55108540 A JP S55108540A JP 1460079 A JP1460079 A JP 1460079A JP 1460079 A JP1460079 A JP 1460079A JP S55108540 A JPS55108540 A JP S55108540A
Authority
JP
Japan
Prior art keywords
valve
bucket
opening
oil
passing
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
JP1460079A
Other languages
Japanese (ja)
Other versions
JPS6229567B2 (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 JP1460079A priority Critical patent/JPS55108540A/en
Publication of JPS55108540A publication Critical patent/JPS55108540A/en
Publication of JPS6229567B2 publication Critical patent/JPS6229567B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shovels (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To operate a backet and a breaker, for example, using one hydraulic circuit by a method wherein a pilot operation check valve is fitted in the closing side of pressure-oil supply circuit of a bucket opening and closing cylinder communicating to a hydraulic source via a reversible change-over valve.
CONSTITUTION: Self-seal couplings 8 and 8' are separated and, when self-sealing is made, the supply of the pressure oil 1 to a breaker 7 is stopped by changing the position of a reversible change-over valve 2. Namely, the valve 2 is transferred to A-boat for opening a bucket, the pressure oil 1 is fed to the bucket closing side of a bucket opening and closing cylinder 3 after passing a pilot operation check valve 4 from the valve 2, and return oil is returned to a tank 9 through a return oil circuit (b). When the valve 2 is transferred to B-boat for opening the bucket, the pressure oil is fed to the bucket opening side of the cylinder 3 after passing a direction change-over valve or directly from the valve 2, and return oil can be returned to the tank 9 after passing the valves 4 and 2.
COPYRIGHT: (C)1980,JPO&Japio
JP1460079A 1979-02-10 1979-02-10 Bucket operating circuit Granted JPS55108540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1460079A JPS55108540A (en) 1979-02-10 1979-02-10 Bucket operating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1460079A JPS55108540A (en) 1979-02-10 1979-02-10 Bucket operating circuit

Publications (2)

Publication Number Publication Date
JPS55108540A true JPS55108540A (en) 1980-08-20
JPS6229567B2 JPS6229567B2 (en) 1987-06-26

Family

ID=11865676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1460079A Granted JPS55108540A (en) 1979-02-10 1979-02-10 Bucket operating circuit

Country Status (1)

Country Link
JP (1) JPS55108540A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62188603U (en) * 1986-05-21 1987-12-01
JPH02204530A (en) * 1989-02-01 1990-08-14 Katsunori Tanada Working device support structure incorporating power source

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725356A (en) * 1980-07-23 1982-02-10 Mitsubishi Gas Chem Co Inc Curable resin composition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725356A (en) * 1980-07-23 1982-02-10 Mitsubishi Gas Chem Co Inc Curable resin composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62188603U (en) * 1986-05-21 1987-12-01
JPH02204530A (en) * 1989-02-01 1990-08-14 Katsunori Tanada Working device support structure incorporating power source

Also Published As

Publication number Publication date
JPS6229567B2 (en) 1987-06-26

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