A working device, with coupling means for operatively coupling it to a vehicle, which means form a quick coupling, comprises, on a rear side of a bucket (1), a supporting plate (8) supporting a first portion of the constructional elements forming the quick coupling, whereas a respective end portion of the vehicle arms has a further supporting plate (14), which is driven by a cylinder-piston unit (21), and supports a further portion of the quick coupling forming constructional elements.