| 摘要 |
<p>In case an unexpected problem occurs in a power supply source like an engine (10) during construction work using heavy equipment like an excavator, an emergency control method for work device of construction equipment of the present invention can be advantageously used for preventing a fall of the work device and ensuring a safe landing of the work device by driving a direction switching valve (50) using the hydraulic pressure accumulated in an accumulator or an electric force. The control method preferably includes the steps of: determining a state (S200) of the engine (10), if the engine is in off state despite the absence of an engine off request signal (S300), determining that the engine is stopped abnormally (S400), and if the engine is stopped abnormally, outputting a control signal (S500) to the valve driving units (110;110A) in correspondence to the control input of the operation lever (60,70). <IMAGE></p> |
