JPS5620803A - Hydraulic circuit - Google Patents
Hydraulic circuitInfo
- Publication number
- JPS5620803A JPS5620803A JP9634079A JP9634079A JPS5620803A JP S5620803 A JPS5620803 A JP S5620803A JP 9634079 A JP9634079 A JP 9634079A JP 9634079 A JP9634079 A JP 9634079A JP S5620803 A JPS5620803 A JP S5620803A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- load
- line
- generation
- speed reduction
- 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
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To prevent the generation of a negative pressure in a load line upon speed reduction of a load having a negative load by a method wherein a two-port valve opened by a pressure in a pressure line is provided between the pressure line and the load line in a discharging side of a pump.
CONSTITUTION: A two-port valve 40 opened by a pressure in a pressure line 51 is provided between the pressure line 51 in a discharging side of a pump and a load line 53 communicating with a cylinder chamber 30b. In case a change-over valve 21 is switched from a right position b1 to a neutral position for a speed reduction of a load 31, the two-port valve 40 is opened simultaneously with generation of a surge pressure in the pressure line 51 and oil in the pressure line 51 is flowed into the load line 53 and the cylinder chamber 30b. Thereby, generation of a negative pressure in the load line 53 upon speed reduction of the load 31 may be prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9634079A JPS5620803A (en) | 1979-07-27 | 1979-07-27 | Hydraulic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9634079A JPS5620803A (en) | 1979-07-27 | 1979-07-27 | Hydraulic circuit |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17625086A Division JPS6249001A (en) | 1986-07-25 | 1986-07-25 | Hydraulic circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5620803A true JPS5620803A (en) | 1981-02-26 |
JPS6234961B2 JPS6234961B2 (en) | 1987-07-30 |
Family
ID=14162278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9634079A Granted JPS5620803A (en) | 1979-07-27 | 1979-07-27 | Hydraulic circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5620803A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58142003A (en) * | 1982-02-15 | 1983-08-23 | Mitsubishi Heavy Ind Ltd | Driving circuit of actuator with vacuum preventive mechanism |
JPS58142004A (en) * | 1982-02-15 | 1983-08-23 | Mitsubishi Heavy Ind Ltd | Control valve for driving actuator with vacuum preventive mechanism |
JPS61101103U (en) * | 1984-12-11 | 1986-06-27 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944180A (en) * | 1972-07-13 | 1974-04-25 | ||
JPS5151682A (en) * | 1974-10-29 | 1976-05-07 | Daikin Ind Ltd | RYUTAISOCHI |
JPS52151903A (en) * | 1976-06-11 | 1977-12-16 | Daikin Ind Ltd | Hydraulic device |
JPS5316174A (en) * | 1976-07-27 | 1978-02-14 | Budzich Tadeusz | Load control device |
JPS5410185U (en) * | 1977-06-24 | 1979-01-23 | ||
JPS54104760U (en) * | 1977-12-29 | 1979-07-24 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5254238A (en) * | 1975-10-29 | 1977-05-02 | Takao Unno | Buffer strut for guard cable |
-
1979
- 1979-07-27 JP JP9634079A patent/JPS5620803A/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4944180A (en) * | 1972-07-13 | 1974-04-25 | ||
JPS5151682A (en) * | 1974-10-29 | 1976-05-07 | Daikin Ind Ltd | RYUTAISOCHI |
JPS52151903A (en) * | 1976-06-11 | 1977-12-16 | Daikin Ind Ltd | Hydraulic device |
JPS5316174A (en) * | 1976-07-27 | 1978-02-14 | Budzich Tadeusz | Load control device |
JPS5410185U (en) * | 1977-06-24 | 1979-01-23 | ||
JPS54104760U (en) * | 1977-12-29 | 1979-07-24 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58142003A (en) * | 1982-02-15 | 1983-08-23 | Mitsubishi Heavy Ind Ltd | Driving circuit of actuator with vacuum preventive mechanism |
JPS58142004A (en) * | 1982-02-15 | 1983-08-23 | Mitsubishi Heavy Ind Ltd | Control valve for driving actuator with vacuum preventive mechanism |
JPS61101103U (en) * | 1984-12-11 | 1986-06-27 |
Also Published As
Publication number | Publication date |
---|---|
JPS6234961B2 (en) | 1987-07-30 |
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