Soil drill cleaning mechanism - has scraper-blade which is resiliently pivoting and coupled to guide wheel

摘要

The helical blade of the soil drill encompasses a hollow sleeve for feeding concrete when used for installing concrete foundation piles. The scraper blade fits between the helical drill blades and is kept resiliently in contact with the drill blades. As the scraper blade can move outwards against spring pressure, this enables the blade to be used with a variety of drill diameters, which occurs when several drill lengths are coupled together.