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沈阳重型机器厂生产的PYB-2200圆锥破碎机,其机械润滑是由油泵站的两台125升/分油泵(145D、146D)供给,电气控制原理如图1所示(与本文无关部分省略)。其中一台工作,另一台为备用,由转换开关1HK任意选择。在破碎机运转过程中,当润滑油压力低于0.8公斤/厘米~2时,压力继电器YJ打开,中间继电器2J断电,2J闭合备用油泵投入工作,同时,2J闭合发出笛声报警,引起操作人员注意。经1分钟以后,如油压仍升不上去则SJ_1闭合,中间继电器3J得电吸合,3J常闭触点断开,把往圆锥破碎机运矿的皮带运输机电机103D跳闸,停止给矿,经3分钟后,SJ_2闭合,4J得电,其常闭触点断开,将主电
The mechanical lubrication of PYB-2200 cone crusher produced by Shenyang Heavy Machinery Factory is supplied by two 125L / min oil pumps (145D, 146D) at the pump station. The principle of electrical control is shown in Figure 1 (omitted in this paper) . One of the work, the other for the backup, by the arbitrary choice of switch 1HK. During the operation of the crusher, when the pressure of the lubricating oil is lower than 0.8 kg / cm ~ 2, the pressure relay YJ is opened, the relay 2J is de-energized, the 2J closed spare oil pump is put into operation, and the 2J closed siren alarm, causing operation Personnel attention. After 1 minute, such as oil pressure is still not up to SJ_1 closed, the middle relay 3J have electric pull, 3J normally closed contact disconnected, the conveyor belt to the cone crusher transport motor 103D trip to stop the mine, After 3 minutes, SJ_2 closed, 4J have electricity, the normally closed contact is disconnected, the main power