Agricultural machine for spreading liquids or liquid manure on an agricultural field

Agricultural machine (200) for spreading liquids or liquid manure on an agricultural field, the agricultural machine in the orientation defining a straight-ahead movement comprising:
- a frame (2) having a front end (4) and a rear end (6);
- a first spreader boom (8) having a proximal end (10) and a distal end (12);
- a second spreader boom (14) having a proximal end (16) and a distal end (18);
- a number of nozzles (20) for discharging a liquid or slurry from a storage tank (22);
wherein the frame comprises two or more wheels (24);
wherein the proximal end (10) of the first spreader boom (8) is pivotally suspended from the frame (2) of the agricultural machine in a first boom suspension (26) on a right-hand side thereof such that the first spreader boom (8) is able to pivot about a first, substantially vertical pivot axis (28), and wherein the proximal end (16) of the second spreader boom (14) is suspended from the frame (2) of the agricultural machine in a second boom suspension (30) on a left-hand side thereof such that the second spreader boom (14) is able to pivot about a second, substantially vertical pivot axis (32), the agricultural machine thereby being able to change a configuration between a working configuration in which the first spreader boom (8) and the second spreader boom (14) are expanded by extending out of the frame (2) of the agricultural machine, and a transport configuration in which the first spreader boom (8) and the second spreader booms (14) are retracted so that at least a part of the two spreader booms (8,14) extends substantially parallel to a longitudinal direction (X) of the frame (2);
wherein the nozzles (20) for spreading liquid or liquid manure are arranged along the extension of the first spreader boom (8) or along the extension of the second spreader boom (14);
wherein the agricultural machine comprises on its right side a first rope holder (34) having a first rotatable drum element (36) for winding a rope, wherein the first drum element comprises a first rope (38) having a first end (40) and a second end (42); wherein the first end (40) of the first rope is attached to the first drum element (36), and wherein the second end (42) of the first rope is configured to be connected to a first connection point (44) on the first spreader boom (8);
wherein the agricultural machine comprises on its left side a second cable holder (46) which second rotatable drum member (48) for winding a rope, the second drum member comprising a second rope (50) having a first end (52) and a second end (54); the first end (52) of the second rope being attached to the second drum member (48), and the second end (54) of the second rope being configured to be connected to a second connection point (56) on the second spreader boom (14);
wherein the agricultural machine comprises a first rope holder suspension (58) arranged on a right side thereof, wherein the first rope holder (34) is suspended in this first rope holder suspension such that the position of the first rope holder can be changed in a vertical direction with respect to the frame (2) of the agricultural machine;
wherein the agricultural machine comprises a second rope holder suspension (60) arranged on a left side thereof, wherein the second rope holder (46) is suspended in this second rope holder suspension such that the position of the second rope holder can be changed in a vertical direction with respect to the frame (2) of the agricultural machine;
wherein the first rope holder suspension (58) is arranged in front of the first boom suspension (26) belonging to the first spreader boom (8), and wherein the second rope holder suspension (60) is arranged in front of the second boom suspension (30) belonging to the second spreader boom (14);
wherein the first drum member (36) and the second drum member (48) are connected to a motor (62) for rotating the first drum member (36) and the second drum member (48), respectively.