A front loader arrangement (12) includes a mounting frame (16) and a mounting mast (18), wherein the mounting mast (18) can be quickly coupled to, and decoupled from, the mounting frame (16), and wherein a locking device for locking the mast to the frame is provided and includes a pivoting locking bar (54) pivotable between locking and unlocking positions. Simple coupling and decoupling is enabled by a supporting hinge (62) that is pivotally mounted to the locking bar (54) and is configured in such a manner that a pivoting movement of the pivoting locking bar (54) into the locking position is blocked by the supporting hinge upon a relative movement between the mounting mast (18) and the mounting frame (16) for decoupling purposes and is released by the supporting hinge upon a relative movement between the mounting mast (18) and the mounting frame (16) for coupling purposes.