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Hydraulic disc brake system Description The PS series hydraulic disc brake system consists of three parts: brake actuation mechanism, hydraulic power unit and control system. These three parts are connected through hydraulic pipeline. The hydraulic power unit is the hydraulic power supply unit, which provides necessary hydraulic power for the actuation mechanism; the control system is the hydraulic power control unit; | |
the actuation mechanism is the braking actuation unit, which consists of braking caliper, caliper frame and friction disc, and the braking calipers include normal open service calipers and normal closed safety calipers. This series of brake system has the following four functions: 1. Service Brake Through operating the handle of the brake valve, adjust the service caliper's normal pressure on the friction disc. So provide adjustable braking torque to the rigs to meet requirements in different working conditions, such as bit feeding, tripping etc. | |
2. Emergency Brake Under emergency condition, press the Red emergency brake button, the service calipers and safety calipers will all applied to realize emergency stop. 3. Over - winding Protection When the hook is lifted to a certain height with load the service brake should be actuated but not did, due to the driller's failure in operation and some other reasons, the over winding or colliding prevention valve will give a signal to the service calipers and safety calipers to realize emergency stop for preventing crown block accident. | |
4. Parking Brake When the drilling rig will stop working or the driller wants to leave the driller's station, pulling down the parking brake handle will realize safety calipers braking to prevent the hook from sliding. In addition, according to customer's requirements the function of Mistaken Operation Protection can be added. What is called Mistaken Operation Protection is In case that the driller releases parking brake and emergency brake without following requirements of regulations, all braking calipers will come into braking condition to realize safety protection. |
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