| 摘要 |
PROBLEM TO BE SOLVED: To suppress a lowering of braking force in the case of the failure of a signal circuit in one system. SOLUTION: This braking device for a three-axle vehicle is provided with a second signal circuit 18 for regulating the braking force of a front wheel brake 1, a first signal circuit 28 for regulating the braking force of a rear-front wheel brake 2, a third signal circuit 38 for regulating the braking force of a rear-rear wheel brake 3, a dual brake valve 19 for regulating the respective signal pressure of the second signal circuit 18 and first signal circuit 28 according to the depressed quantity of a brake pedal, and a dual relay valve 39 for heightening the signal pressure of the third signal circuit 38 in association with the rise of signal pressure of at least one of the second signal circuit 18 and first signal circuit 28.
|
