JPS55108540A - Bucket operating circuit - Google Patents
Bucket operating circuitInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5725356A (en) * | 1980-07-23 | 1982-02-10 | Mitsubishi Gas Chem Co Inc | Curable resin composition |
-
1979
- 1979-02-10 JP JP1460079A patent/JPS55108540A/en active Granted
Patent Citations (1)
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)
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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