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瑞典ASFA公司绞车圆盘闸液压系统用于φ4×4型多绳摩擦绞车的控制系统,完成箕斗的提升和工作制动以及三级紧急制动工作。该绞车的运行速度为10m/min;最大制动力矩大于提升钢丝绳静张力差的三倍。制动力矩共由八个制动油缸组成的八个制动闸盘产生,其中每个闸盘的制动力约为80kN。绞车圆盘闸的液压系统为双泵供油的开式系统。如图1所示。在提升工作时,用油压松闸。而制动时,油压卸荷,弹簧上闸。制动又分为工作制动和紧急制动两种情况。 (一) 提升时(松闸):电机通电,除电磁阀12外,所有电磁阀均通电,Q_1和Q_2两泵间同时供油。将工作制动手把转到最终位置,
Sweden ASFA winch disc brake hydraulic system for φ4 × 4 multi-rope friction winch control system to complete the skip lifting and working brake and three emergency brake work. The winch operating speed of 10m / min; maximum braking torque is greater than three times the static tension of the hoisting rope. The braking torque is generated by eight brake pads consisting of eight brake cylinders, each of which has a braking force of about 80 kN. Winch disc brake hydraulic system for the double pump oil open system. As shown in Figure 1. When lifting work, use hydraulic pressure to brake. When braking, hydraulic unloading, spring on the brake. Braking is divided into two kinds of work brake and emergency brake. (A) lifting (loose brake): the motor is energized, except the solenoid valve 12, all the solenoid valves are energized, Q_1 and Q_2 between the two pumps at the same time oil. The work of the brake to the final position,