Combined machine with selective actuation

Combined machine with selective actuation, comprising:

• a support frame and ground support;
• a kinematic engine comprising a drive shaft;
• a driven shaft that is operationally and permanently connected to the drive shaft by means of the kinematic engine;
• a first operating machine and a second operating machine that can be operationally connected to the driven shaft;
• a set for selectively transmitting motion from the driven shaft to the operating machines
• wherein the transmission set comprises:
• first belted means of transmission and second belted means of transmission for operationally connecting the driven shaft to, respectively, the first operating machine or the second operating machine;
• movement means for the driven shaft that are able to selectively move the driven shaft from an idle position to a first operating position or second operating position,
• such that:
• when the driven shaft is in the first operating position, the first belted means of transmission are under tension thus the first operating machine is actuated;
• when the driven shaft is in the first operating position, the second belted means of transmission are under tension and thus the second operating machine is actuated;
• when the driven shaft is in the idle position, the first belted means of transmission and second belted means of transmission are slack and the first operating machine and second operating machine are halted.