Work machine

A work machine comprising:

• an articulated work device having at least one connecting member that is capable of rotating in a vertical direction and an attachment;
• a hydraulic cylinder for rotating the connecting member;
• a control valve for controlling a flow of pressure oil to the hydraulic cylinder;
• a plurality of pilot solenoid valves that generate pilot pressure to operate the control valve and output it to the control valve;
• and
• a controller with a limiting function to control the plurality of pilot solenoid valves to restrict an operation of the work device within a predetermined range,
• wherein the work machine further includes
• an anti-drop valve with an anti-drop function to prevent a fall of the connecting member, and
• a solenoid valve that outputs release pressure to release the anti-drop function to the anti-drop valve,
• wherein the controller is configured to
• calculate the release pressure of the anti-drop valve based on information related to the limiting function that controls the plurality of pilot solenoid valves, and
• control the solenoid valve to output the calculated release pressure which serves as a signal to release the anti-drop function to the anti-drop valve.