Slow stopping apparatus for working machine

A slow stopping apparatus for a working machine, wherein the slow stopping apparatus is provided in the working machine, and the working machine includes a boom for supporting a cargo, the slow stopping apparatus comprising:

• an actuator, wherein the actuator operates the working machine;
• a control unit, wherein the control unit controls a driving motion of the actuator;
• and
• an operating unit, wherein the operating unit gives an instruction to operate the working machine to the control unit,
• wherein the control unit includes:
• a first slow stopper, wherein the first slow stopper calculates a cargo swing cycle (T) of the cargo, and brakes and stops the actuator when a stop signal is input from the operating unit to stop a motion of the working machine, and time to brake and stop the actuator is half the cargo swing cycle (T/2);
• a second slow stopper, wherein the second slow stopper brakes and stops the actuator when the stop signal is input from the operating unit, and the time to brake and stop the actuator is less than half the cargo swing cycle (T/2);
• a cargo swing predictor, wherein the cargo swing predictor predicts whether a load amplitude of the cargo will exceed an allowable value;
• and
• a switcher, wherein the switcher stops the actuator with the first slow stopper when the cargo swing predictor predicts that the load amplitude of the cargo will exceed the allowable value, and stops the actuator with the second slow stopper when the cargo swing predictor predicts that the load amplitude of the cargo will not exceed the allowable value.