| 摘要 |
PROBLEM TO BE SOLVED: To provide a supporting structure of a tilling rotary shaft having simple structure and effectively preventing the intrusion of dust such as soil in an installation space of a bearing member and sealing member supporting the tilling rotary shaft. SOLUTION: The supporting structures 100a, 100b, 100c of a tilling rotary shaft 110 provided with a tilling final shaft 111 having a shaft body 111a and a connection flange 111b and a tilling tine shaft 112 is furnished with dust covers 130a, 130b, 130c, 130c' placed on the connection flange 111b to form a first labyrinth structure Q1. The dust covers 130a, 130b, 130c, 130c' have a main body 131 forming the first labyrinth structure Q1 and one or more foreign material rejecting parts 132 protruding radially outward from the outer circumference of the main body 131. COPYRIGHT: (C)2008,JPO&INPIT
|
