KANG, YOUNG SUN,강영선,JUNG, SAM SUK,정삼석,PARK, HYUN SOO,박현수,KIM, DONG HYUN,김동현,KANG, YOUNG SUNKR,JUNG, SAM SUKKR,PARK, HYUN SOOKR,KIM, DONG HYUNKR
申请号：
KR1020160058955
公开号：
KR1017661410000B1
申请日:
2016.05.13
申请国别(地区):
KR
年份:
2017
代理人:
摘要：
Provided is a transmission for a tractor capable of accurate operation at an ultra-low speed and multistage transmission. The transmission of the present invention comprises: a forward and backward movement transmission unit (100) which outputs power of an engine, transmitted through an input shaft (Sa), as rotation in a forward or backward movement direction of a forward and backward movement shuttle shaft (130)； an ultra-low speed transmission unit (200) which selectively outputs an ultra-low speed by making an output of the forward and backward movement shuttle shaft (130) pass through an ultra-low speed gear or preventing the output of the forward and backward movement shuttle shaft (130) from passing through the ultra-low speed gear； a main transmission unit (300) comprising a main transmission counter axis (310) which receives output of the ultra-low speed transmission unit (200), a main transmission axis (320) which outputs rotation of the main transmission counter axis (310) in a revolution number of multistage transmission, and multiple transmission gears which are installed on the main transmission counter axis and the main transmission axis and transmit a revolution number of the main transmission counter axis as output of multistage transmission to the main transmission axis； and a sub-transmission unit (400) comprising a spiral pinion (410) for outputting the rotation of the main transmission axis (320) in a rotation number of multistage transmission to a differential gear, and multiple transmission gears for performing multistage transmission from the main transmission axis to the spiral pinion.본 발명은 초저속의 구현이 정확하고 다단 변속이 가능한 트랙터의 트랜스미션을 제안한다. 본 발명의 트랜스미션은, 인풋샤프트(Sa)를 통하여 전달되는 엔진의 동력을 전후진 셔틀샤프트(130)의 전진 또는 후진 방향 회전으로 출력하는 전후진 변속부(100)； 상기 전후진 셔틀샤프트(130)의 출력을 초저속기어를 경유하거나 경유하지 않도록 함으로써, 선택적으로 초저속 출력을 출력하기 위한 초저속 변속부(200)； 상기 초저속 변속부(200)의 출력을 받는 주변속카운터축(310)과, 주변속카운터축(310)의 회전을 다단으로 변속된 회전수로 출력하는 주변속축(320), 그리고 상기 주변속카운터축과 주변속축에 각각 설치되어 주변속카운터축의 회전수를 다단으
