| 摘要 |
A blade 12 for use in a digging assembly (10, figure 1) having a base 24 and a terminal portion 26, base 24 being wider than terminal portion 26 and blade 12 tapering towards terminal portion 26. Blade 12 has first second and third sharpened edges 28, 30, 32, having flanks 34 that subtend an angle of at least 90{. Each of the flanks 28, 30, 32 are skewed in relation to the others so as to exhibit a lifting effect when blade 12 is rotated through soil in use. In a further aspect, the blade has three limb members (38, figure 4), each limb member (38) having a base (40) and a terminal portion (42), the base being narrower than the terminal portion (42) and the limb member (38) tapering towards the base (40). There are sharpened edges (44, 46, 48). There may be a tine (52, figure 5) associated with each blade 1. In a further aspect still, there is a moveable vehicle (56, figure 7) having a digging assembly 10, a grinding hopper (60) and a magnetic roller (70) for removing ferrous materials from the soil such as landmines, so that they may be safely disposed of. |
