JPS55142104A - Revolving hydraulic circuit - Google Patents
Revolving hydraulic circuitInfo
- Publication number
- JPS55142104A JPS55142104A JP4897779A JP4897779A JPS55142104A JP S55142104 A JPS55142104 A JP S55142104A JP 4897779 A JP4897779 A JP 4897779A JP 4897779 A JP4897779 A JP 4897779A JP S55142104 A JPS55142104 A JP S55142104A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- valve
- hydraulic
- comes
- work
- 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.)
- Pending
Links
Landscapes
- Jib Cranes (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To prevent abnormal wear of parts by providing with a direction converting valve for braking and by releasing a stop brake gear so that a stop brake does not work in case where rotational speed of a hydraulic motor is more than a settled valve.
CONSTITUTION: A relief valve 18 is connected to an oil pressure source 17 for driving a brake hydraulic cylinder 11 for a brake 10, a direction change-over valve 19 for a hydraulic pilot operating brake is installed between the pressure source 17 and a cylinder 11. If the moment of inertia for a revolving body revolved by a hydraulic motor 3 is large, even though a direction converting valve 4 is returned to the neutral position, the valve 19 is stayed at the position (b), and the brake 10 does not work. When rotation of a motor 3 comes to be less than a settled value, pressure in a pipeline 23 or 24 drops and as the valve 19 comes to be at the position (a) the brake 10 works.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4897779A JPS55142104A (en) | 1979-04-23 | 1979-04-23 | Revolving hydraulic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4897779A JPS55142104A (en) | 1979-04-23 | 1979-04-23 | Revolving hydraulic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55142104A true JPS55142104A (en) | 1980-11-06 |
Family
ID=12818308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4897779A Pending JPS55142104A (en) | 1979-04-23 | 1979-04-23 | Revolving hydraulic circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55142104A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01174601U (en) * | 1988-05-30 | 1989-12-12 | ||
KR100590788B1 (en) * | 2003-12-26 | 2006-06-21 | 한국항공우주연구원 | Overload prevention device for aircraft structural test |
-
1979
- 1979-04-23 JP JP4897779A patent/JPS55142104A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01174601U (en) * | 1988-05-30 | 1989-12-12 | ||
KR100590788B1 (en) * | 2003-12-26 | 2006-06-21 | 한국항공우주연구원 | Overload prevention device for aircraft structural test |
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