Planetary transmission for baler

A baler for agricultural products, comprising a chassis;

• a pickup;
• a transporting passage;
• a pressing chamber;
• a binding device;
• a discharging device;
• working means performing working operations in the baler;
• a main drive shaft connected with said working means for driving said working means;
• at least one planetary summing transmission connected with and an operative for driving said main drive shaft;
• a first drive unit including a cardan shaft and transmitting rotation with a first rotary speed to said planetary summing transmission;
• and a second drive unit transmitting a rotation to said planetary summing transmission with a second regulatable rotary speed, so that said planetary summing transmission summarizes said rotary speeds of said first and second drive units and produces a rotation with an output speed for driving said main drive shaft, said planetary summing transmission having a sun gear and a plurality of planetary gears;
• a hollow shaft arranged so that said first drive unit acts on said sun gear through said hollow shaft;
• a hollow gear arranged so that said second drive acts on said hollow gear;
• and an intermediate member through which said planetary gears are connected with said main drive shaft for joint rotation with the latter.