JPS5770757A - Controller for operation of mechanical brake of hydraulic motor - Google Patents
Controller for operation of mechanical brake of hydraulic motorInfo
- Publication number
- JPS5770757A JPS5770757A JP14500680A JP14500680A JPS5770757A JP S5770757 A JPS5770757 A JP S5770757A JP 14500680 A JP14500680 A JP 14500680A JP 14500680 A JP14500680 A JP 14500680A JP S5770757 A JPS5770757 A JP S5770757A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- port
- pressure
- valve
- groove
- 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
- Regulating Braking Force (AREA)
Abstract
PURPOSE: To improve the durability of a brake by providing, in addition to a counter balance valve, a shuttle valve which quickly releases a brake when a motor starts operating and activates the brake after the stop of the motor when the brake is applied.
CONSTITUTION: When a valve 16 is converted to the left side, pressure oil enters into a port 6, causing a sppol 10 in a counter balance valve 1 to move right. Thus, the oil pressure also enters into a chamber 30 in a shuttle valve 2 and a port 8 leads to a groove 36 to close a groove 37, as a plunger 29 moves right. The oil pressure in the port 8 enters into an oil chamber 27 through a port 42, releasing a brake 24. When the brake is applied with a valve 16 being neutral in this condition, the pressure in the room is set in the tank pressure and that in a chamber 50 sets in the discharge pressure of a motor 23, so that the plunger 29 moves left over the neutral position. This allows a port 9 to lead a groove 38, closing the groove 37 to maintain the brake 24 in release condition with the pressure oil of the port 9. When the force of inertia of the motor 23 becomes less, the plunger 29 is set in neutral, causing the chamber 27 to lead to the tank to activate the brake 24.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14500680A JPS5770757A (en) | 1980-10-16 | 1980-10-16 | Controller for operation of mechanical brake of hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14500680A JPS5770757A (en) | 1980-10-16 | 1980-10-16 | Controller for operation of mechanical brake of hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5770757A true JPS5770757A (en) | 1982-05-01 |
Family
ID=15375264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14500680A Pending JPS5770757A (en) | 1980-10-16 | 1980-10-16 | Controller for operation of mechanical brake of hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5770757A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6038859A (en) * | 1998-05-13 | 2000-03-21 | Poclain Hydraulics Industrie | Hydraulic fluid circuit having a hydraulic motor and a three-position selector for selecting the circulation of fluid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52137826A (en) * | 1976-05-10 | 1977-11-17 | Komatsu Ltd | Control circuit for hydraulic drive vehicle |
-
1980
- 1980-10-16 JP JP14500680A patent/JPS5770757A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52137826A (en) * | 1976-05-10 | 1977-11-17 | Komatsu Ltd | Control circuit for hydraulic drive vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6038859A (en) * | 1998-05-13 | 2000-03-21 | Poclain Hydraulics Industrie | Hydraulic fluid circuit having a hydraulic motor and a three-position selector for selecting the circulation of fluid |
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