| 摘要 |
PROBLEM TO BE SOLVED: To eliminate trouble that straws or weeds are strongly penetrated into gaps in mutually reversely rotated parts because the normally and reversely rotated parts are composed in a uniaxial normally and reversely rotating rotary tillage device. SOLUTION: The uniaxial normally and reversely rotating rotary tillage device is equipped with a first tillage tine shaft composed of a solid shaft, a second tillage tine shaft composed of a cylinder shaft and arranged on the inside and the outside on the same shaft center and a third tillage tine shaft composed of a cylinder shaft and fixed onto a part where the first tillage tine shaft is protruded from the second tillage tine shaft. This axial sealing mechanism of the uniaxial normally and reversely rotating rotary tillage device is obtained by interposingly installing an inside diameter axial sealing mechanism and an outside diameter axial sealing mechanism on both sides of the inside and the outside in the second tillage tine shaft composed of the cylinder shaft and overlappingly covering the outside of the inside diameter axial sealing mechanism with a bowl-like sealing cover secured to the inner end on the outer periphery of the third tillage tine shaft. The outer periphery of an outwardly directed bowl-like sealing cover secured to the outer end of the second tillage tine shaft is overlappingly covered with the bowl-like sealing cover. |
