JPS5770760A - Braking device for earthwork vehicle - Google Patents
Braking device for earthwork vehicleInfo
- Publication number
- JPS5770760A JPS5770760A JP55146347A JP14634780A JPS5770760A JP S5770760 A JPS5770760 A JP S5770760A JP 55146347 A JP55146347 A JP 55146347A JP 14634780 A JP14634780 A JP 14634780A JP S5770760 A JPS5770760 A JP S5770760A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- oil
- pressure
- accumulator
- spring
- 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
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
PURPOSE: To precisely output enough damping force and to improve the operation and the safety of a brake by activating oil pressure and the spring force of an accumulator in the same operation as a brake in common use to apply the brake when the oil pressure of an oil pressure system is reduced.
CONSTITUTION: When an oil pressure system is appropriate, the pressure oil from a pump P activates a booster 2 after a pedal 15 is stepped on to activate a brake 1. When the pump is stopped on account of troubles, the stagnated pressure oil in the oil pressure system is maintained in the condition of the pressure applied by a piston 33 with the reaction force of a spring 34 in an accumulator 3. Then, stepping on the pedal 15 allows the accumulated pressure oil of the accumulator 3 to be pushed out by the piston 33 and transmitted to the booster 2. This causes the booster 2 to operate and the brake 1 is activated by the boosted force and the reaction force of the spring 34 being acted on a lever 12. When, also, the oil pressure system stops functioning and so on by piping failure, the brake 1 is automatically operated only with the reaction force of the spring 34 because the accumulated pressure oil of the accumulator 3 flows out.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55146347A JPS5770760A (en) | 1980-10-21 | 1980-10-21 | Braking device for earthwork vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55146347A JPS5770760A (en) | 1980-10-21 | 1980-10-21 | Braking device for earthwork vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5770760A true JPS5770760A (en) | 1982-05-01 |
JPS6159945B2 JPS6159945B2 (en) | 1986-12-18 |
Family
ID=15405644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55146347A Granted JPS5770760A (en) | 1980-10-21 | 1980-10-21 | Braking device for earthwork vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5770760A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020128125A (en) * | 2019-02-07 | 2020-08-27 | 株式会社豊田自動織機 | Brake system of industrial vehicle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5073157A (en) * | 1990-02-20 | 1991-12-17 | Power Engineering & Manufacturing, Ltd. | Mechanically variable transmission |
-
1980
- 1980-10-21 JP JP55146347A patent/JPS5770760A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020128125A (en) * | 2019-02-07 | 2020-08-27 | 株式会社豊田自動織機 | Brake system of industrial vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPS6159945B2 (en) | 1986-12-18 |
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