TRANSMISSION GEAR OF WORKING MACHINE

摘要

PROBLEM TO BE SOLVED: To make the constitution of a transmission gear simple and compact and facilitate the inspection/maintenance. SOLUTION: A belt transmission unit U is constituted by equipping a belt case 1a surrounding a belt continuously variable transmission mechanism 1 constituted by providing a pair of split pulleys in which belt winding radii can be changed and adjusted integrally with a gear shift lever 9 performing a magnifying/reducing operation for the belt winding radius of a driving side split pulley and an assist mechanism B assisting operating force of the gear shift lever 9. The belt transmission unit U is attachably/detachably installed in a mission case 2a which is internally equipped with a gear shift mechanism of a travelling system.