초록 ▼

An axle drive unit for facilitating maintenance, such as replacement or cleaning of an oil filter for filtering operating oil. The present invention uses the interior of the housing of the axle drive unit as an oil sump. The axle drive unit has a hydrostatic transmission for driving axles and operat

An axle drive unit for facilitating maintenance, such as replacement or cleaning of an oil filter for filtering operating oil. The present invention uses the interior of the housing of the axle drive unit as an oil sump. The axle drive unit has a hydrostatic transmission for driving axles and operating oil supply means for supplying the operating oil to the transmission. A plug-in bore is open at the side wall of the housing opposite to a suction port of the operating oil supply means. The oil filter is inserted into the housing through the plug-in bore and connected to the suction port. The plug-in bore is covered with a cover member for freely opening and shutting the bore. Such construction enables a worker, when inspecting or replacing the oil filter, to remove the cover member from the side wall of the housing while the axle drive unit is being loaded on a vehicle. The oil filter can simply be inserted or removed through the open plug-in bore. The oil filter is horizontally mounted in the housing and avoids other parts of the axle drive unit. At the same time, the oil filter has a sufficient length to obtain an increase in filtration area without reducing ground clearance of the axle drive unit. Additionally, the oil filter is inexpensive to produce.

대표청구항 ▼

An axle drive unit comprising: a housing; an oil sump formed in said housing; a hydrostatic transmission for driving an axle, said hydrostatic transmission being disposed in said housing; oil supply means for supplying operating oil to said transmission, said oil supply means having a suction port i

An axle drive unit comprising: a housing; an oil sump formed in said housing; a hydrostatic transmission for driving an axle, said hydrostatic transmission being disposed in said housing; oil supply means for supplying operating oil to said transmission, said oil supply means having a suction port into which oil in said oil sump is introduced; an oil filter disposed in said oil sump for filtering said oil in said oil sump; a plug-in bore open at the surface of said housing for receiving said oil filter; and a cover member for covering said plug-in bore and being detachably mounted to said housing, wherein said oil falter is inserted into said housing; through said plug-in bore and is connected with said suction port.