SPROCKET-ATTACHING STRUCTURE IN TILLING ROTARY APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a sprocket-supporting structure capable of reducing the thickness of a chain case which is a cover of a transmission part to a tillage tine shaft in a side drive-type tilling rotary apparatus attached to a tractor. SOLUTION: A bear shaft 2 is installed in the extension line of a tillage tine shaft 10, and a sprocket 4 is fitted on the outside of the bear shaft 2. A bolt 18 is inserted into a through hole 15 formed in a shaft center part of the bear shaft 2, and a boss 16 installed in the sprocket 4 is screwed and fixed in structure for rotating a tillage tine 20 by transmitting a power through a chain 8 to the sprocket 4 installed in a row arrangement to the tillage tine shaft 10 of the side drive-type tilling rotary apparatus 31 attached to the tractor 30.