Design and operation of Kamaz parking (reserve) brakes

The parking brake is designed to hold the vehicle stationary on a level, path or slope specified by the rules of the road

Scheme of operation of devices in the parking brake circuit

Fig. Scheme of operation of devices in the parking brake circuit: a - when braking, b - when releasing; 1—double safety valve, 2—reservoir, 3—parking brake valve, 4—parking1 brake sensor, 5—control output valve (E), 6—energy accumulator, 7—two-line valve, 8—pneumatic valve, 9—accelerator valve; - air supply from the condensation receiver, // - air supply of the triple safety valve, 7 - air outlet to the atmosphere from the control line, IV - air outlet to the atmosphere from the energy accumulators when the parking brake is turned on, V - air outlet to the atmosphere from the energy accumulators after the button is released emergency release valve

The parking brake drive circuit (Fig. 1) consists of a part of a double safety valve 1, two air receivers 2 with a total capacity of 40 liters, a valve 5 of the control output E, a manual parking brake valve 3, an accelerator valve 9, a part of a two-line bypass valve 7 , four spring energy accumulators 6, brake chambers, pipelines and hoses between them.

The parking brake circuit operates on the reverse principle, when compressed air is released, and when compressed air is released, it is braked.