A vertical tine tiller having vertically oriented tine assemblies that are configured to rotate about vertical axes is provided. The tiller includes a power source that drives a horizontally-aligned driveshaft, which can selectively drive a transmission assembly. Horizontal rotation of the driveshaft is directly transferred into vertical rotation of a pair of drive rods to which the tine assemblies are attached.

A drill attachment for tilling soil has an extended drill shaft that is coupled with a till plate. The combination may be driven by an ordinary hand drill. The drill shaft has a stabilizer tip that protrudes beyond the till plate. The till plate includes a plurality of teeth that dig into and work top soil, while a generally planar disk-shaped body member at the top of the till plate prevents the till plate from sinking below the surface of the soil. The teeth are stamped from the till plate, forming openings in the generally planar disk-shaped body member. These openings and other optional openings cooperate with the teeth to further break up clumps of soil, and help to balance forces from the teeth pulling into the soil against the force of the body member that resists sinking into the earth. Optional weed-out and hole tools are also disclosed.

The present invention discloses an extended-type subsoiling smash-ridging machine, comprising a machine body, a smash-ridging device, a connection device, a ditching device, a flattening device and a straw returning device, wherein the smash-ridging device comprises a smash-ridging box comprising a bottom plate, side plates and a top plate, lower bearing seats are mounted in the bottom plate, rib plates are welded between the lower bearing seats, lubricating oil passages are formed between rib plates and the bottom plate, an upper bearing seats are mounted on the top plate and the length of each lower bearing seat is larger than that of each upper bearing seat. By adopting the structure of the present invention, the strength of the lower bearing seats can be improved so as to facilitate the mounting of more bearing where the stress is large and less bearings where the stress is small, thereby both improving the rigidity and transmission stability of a transmission shaft and reducing the cost; the welding of the rib plates is facilitated, it is ensured that lubricating oil smoothly flows within the smash-ridging box and the lubricating effect is improved.