Snowblower

A snowblower comprising:

• a main frame;
• an auger mounted to the main frame via a rotating shaft defining a rotational axis;
• a fan rotatably mounted to the main frame coaxially to the auger;
• the auger including two lateral side portions, each positioned on a respective lateral side of the fan;
• each of the two lateral side portions of the auger including an helicoidal blade mounted to a first tube;
• both first tubes being attached by a linking shaft and being rotatably mounted to the main frame;
• the first tubes and linking shaft together defining the rotating shaft of the auger;
• the fan including a plurality of vane equidistantly mounted to a second tube;
• the second tube being mounted to the linking shaft via at least one bearing assembly for free rotation thereof about the linking shaft;
• the snowblower further comprising:
• a gear box for operatively coupling both the auger and the fan to an external drive shaft;
• the gear box having an input shaft for operatively coupling to the external drive shaft, a first output shaft coupled to the auger and a second output shaft coupled to the fan;
• the gear box being configured so that a rotational speed of the second output shaft is greater than a rotational speed of the first output shaft;
• a first drive assembly for operatively coupling the first output shaft of the gear box to the auger;
• the first drive assembly including a first sprocket wheel fixedly mounted to the first output shaft of the gear box, a second sprocket wheel fixedly mounted to the rotating shaft of the auger and a first transmission chain operatively mounted to both first and second sprocket wheels;
• and
• and a second drive assembly for operatively coupling the second output shaft of the gear box to the fan;
• the second drive assembly including a third sprocket wheel fixedly mounted to the second output shaft, a fourth sprocket wheel fixedly mounted to the second tube and a second transmission chain operatively mounted to both third and fourth sprocket wheels.