Shifting method of transmission for work vehicle, and transmission for work vehicle

Abstract

A shifting method of a transmission for a work vehicle including a main shifting unit and a sub-shifting unit includes: providing a main shifting unit including a plurality of main shifting gear pairs and at least one main hydraulic shifting device for transmitting power by selecting one of the main shifting gear pairs; providing a sub-shifting unit including a plurality of sub-shifting gear pairs, at least one synchromesh for transmitting power by selecting one of the sub-shifting gear pairs, and a sub-shifting actuator for operating the synchromesh; separating all of the main hydraulic shifting devices from the main shifting gear pairs before shifting using the sub-shifting unit; and shifting the sub-shifting unit by operating the synchromesh using the sub-shifting actuator.

Dependencies are inferred from the claim text.