The invention relates to a control device (40, 240, 440) for an agricultural spreader device (10, 210, 410), comprising a spreader frame (14, 214, 414) swivellably mounted on a carrier (12, 212, 412), and on which frame spreader elements (22, 222, 422) are arranged for spreading liquid and/or solid materials. The control device (40, 240, 440) has a pressure supply connection (62, 268, 468) and a return connection, (64, 270, 470), as well as a controllable valve assembly (60, 266, 466) and a hydraulic cylinder assembly (41, 241, 441) connected to the valve assembly (60, 266, 466) and having a first active surface (51, 255, 455) of the cylinder and a second active surface (52, 265, 465) of the cylinder, wherein the two active surfaces of the cylinder can be supplied with pressure and each is connected to a hydraulic accumulator (98, 100, 318, 320, 524, 544), and wherein the swivel position of the spreader frame (14, 214, 414) can be altered by changing the switch state of the valve assembly (60, 266, 466). In o
