JPS5695753A - Auxiliary brake device for industrial vehicle - Google Patents
Auxiliary brake device for industrial vehicleInfo
- Publication number
- JPS5695753A JPS5695753A JP17375979A JP17375979A JPS5695753A JP S5695753 A JPS5695753 A JP S5695753A JP 17375979 A JP17375979 A JP 17375979A JP 17375979 A JP17375979 A JP 17375979A JP S5695753 A JPS5695753 A JP S5695753A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- change
- pump
- over valve
- valve
- 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
Abstract
PURPOSE: To supplement an engine brake with a pump by shutting off a pump circuit for a hydraulic operation device with a change-over valve interlocked with the brake in an insustrial vehicle such as forklift.
CONSTITUTION: A change-over valve 70 is provided between a pump 32 driven by an engine 3 and a hydraulic operation device A such as hydraulic cylinder of a forklift. Oil pressurized by the pump 32 through the operation of the change-over valve 70 is returned to a tank 39 through a relief valve 80 from a conduit 45. A solenoid 110 to operate the change-over valve 70 is operated by a brake lamp switch 133' interlocked with the operation of a brake pedal 37 so that the change-over valve 70 is changed over to a port C2 in the operation of the brake. Thus, when the brake is applied to a travelling vehicle, an usual brake device is operated while the operation of the hydraulic operation device A is interrupted. Namely, when the change-over valve 70 is brought to the port C2, oil from the pump 32 is returned directly to the relief valve 80 through pipes 36, 45. Since the valve 80 is not opened until oil pressure reaches a set value of a spring 81, resistance is applied to the pump 32 to apply the engine brake to a drive shaft 33 of the engine 3.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17375979A JPS5695753A (en) | 1979-12-28 | 1979-12-28 | Auxiliary brake device for industrial vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17375979A JPS5695753A (en) | 1979-12-28 | 1979-12-28 | Auxiliary brake device for industrial vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5695753A true JPS5695753A (en) | 1981-08-03 |
Family
ID=15966605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17375979A Pending JPS5695753A (en) | 1979-12-28 | 1979-12-28 | Auxiliary brake device for industrial vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5695753A (en) |
-
1979
- 1979-12-28 JP JP17375979A patent/JPS5695753A/en active Pending
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