| 摘要 |
A single-stage snowblower (20) is designed as an accessory for attachment to an electric tractor, and takes power from the batteries on the tractor. The rotary drum (24) of the snowblower, which carries the spiral blade (25), is driven by two electric motors (36L, 36R). The motors lie inside the hollow interior of the drum (24), and drive the drum directly, without chains or gears. The drum (24) has no bearings other than the motor bearings provided inside the motor housing. The ends of the motors are fixed to the snowblower housing. Walk behind versions of the snowblower are also disclosed. In a different version an anti-personnel-mine clearing flail-drum (74) is pushed ahead of an electric tractor (72) by forward-extending struts. The flail-drum is rotated by motors located inside the drum. Other appliances can make up a train of appliances, ahead of the tractor. An undergrowth cutter (90), for example, can be mounted ahead of the flail-drum, and can be carried just clear of the ground, its weight being transferred, via the struts, to the flail-drum. |
