| 摘要 |
A working element of a cultivator comprises an A-type blade with sharp edges, symmetrical as regards to each other, which are made of two conjugated curved areas, the cutting edge of each of the areas with a local stiffening of the lower side by high-alloy material as circles along the entire length of the sharp edge, and along the symmetry axis of the A-type blade on the upper side a local strip stiffening is made from the tip for the wear limit distance. The cutting edge of the first area is made with a local stiffening of the upper side and that of the other area – of the lower side along the length of the sharp edges. |
