DRIVING APPARATUS FOR TRACTORS

摘要

Disclosed is a driving apparatus related to increasing the speed of front wheels and four-wheel drive. According to the present invention, a transport drive shaft rotating by the output of a tractor engine and a fore axle connection shaft having a four-wheel-drive oil path and a front wheel multiply oil path are coaxially placed. The fore axle connection shaft is integrated with a clutch housing by welding. A main gear is connected to the driving shaft and a front wheel multiply gear hub is pivotally connected to the fore axle connection shaft in the clutch housing. A four-wheel-drive hydraulic wet clutch for limiting power is installed between the clutch housing and the main gear, and a front wheel multiply hydraulic wet clutch for limiting power is installed between the clutch housing and the front wheel multiply gear hub. The driving apparatus comprises a first spring pressurizing a four-wheel-drive clutch piston to transfer power between the clutch housing and the main gear using the four-wheel-drive hydraulic wet clutch; and a second spring pressurizing a front wheel multiply clutch piston to cut off the power between the clutch housing and the front wheel multiply gear hub using the front wheel multiply hydraulic wet clutch. The four-wheel-drive hydraulic wet clutch cuts off the power between the clutch housing and the main gear by the oil pressure when oil is supplied through the four-wheel-drive oil path. The front wheel multiply gear hub transfers accelerated power to the clutch housing by an accelerating unit using the oil pressure when the oil is supplied through the front wheel multiply oil path.