| 简介 |
An aerator for providing cylindrical holes in lawns, or similar type surfaces, so as to both loosen earth compaction and collect earth particles by means of helical/twist drills 1 that enter the soil. The drills 1 have a double claw at the tip of each drill 1. The aerator is a pedestrian machine which is powered by an electrical motor or petrol engine with a series of drills encased within a hollow tine tube 12. Each drill 1 is made from a thin metal plate of helical design to achieve the greatest space to convey the earth upwards through the tine tubes 12, which give the rotational force, and up into a soil collection box (15, figure 8). The drills are driven by a series of pulleys/gears (2, figure 4), the whole being pushed in two stages down into the earth, and retrieved, by extended handles (figure 9). |
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