Method for detecting inadmissible operating conditions of work hydraulics of an agricultural tractor

A method for detecting operating states of a work hydraulics of an agricultural tractor, comprising:

• providing an electrically actuated control valve, a branch allocated to the control valve, and an operating unit for the manual actuation of the work hydraulics of a front linkage;
• connecting the electrically actuated control valve to a hydraulic consumer via a hydraulic coupling, the hydraulic coupling including a pivotable dust protection cover;
• supplying hydraulic fluid to a hydraulic lifting device of the front linkage;
• detecting a state variable indicative of a connection state of the hydraulic coupling by a sensor unit;
• communicating the detected state variable via the sensor unit to a control unit;
• deactivating the operating unit if the control unit identifies by way of the evaluation of the state variable that a hydraulic consumer is connected to the hydraulic coupling;
• and
• detecting by the sensor unit if the dust protection cover is in a first pivot position that seals the hydraulic coupling or in a second pivot position that releases the hydraulic coupling.

A method for detecting operating states of a work hydraulics of an agricultural tractor, comprising:

• providing an electrically actuated control valve, a branch allocated to the control valve, and an operating unit for the manual actuation of the work hydraulics of a front linkage;
• connecting the electrically actuated control valve to a hydraulic consumer via a hydraulic coupling, the hydraulic coupling including a pivotable dust protection cover;
• supplying hydraulic fluid to a hydraulic lifting device of the front linkage;
• detecting a state variable indicative of a connection state of the hydraulic coupling by a sensor unit;
• communicating the detected state variable via the sensor unit to a control unit;
• deactivating the operating unit if the control unit identifies by way of the evaluation of the state variable that a hydraulic consumer is connected to the hydraulic coupling;
• detecting by the sensor unit if the dust protection cover is in a first pivot position that seals the hydraulic coupling or in a second pivot position that releases the hydraulic coupling;
• controlling a display unit by the control unit in dependence upon the detected state variable;
• and
• interrupting the branch in a direction of the hydraulic lifting device via a cut-off valve.