Driven axle assembly for vehicles with a lubricant circulation s

Details Driven axle assembly for vehicles with a lubricant circulation s Driven axle assembly for vehicles with a lubricant circulation s

1995-02-23

1996-07-16

Denion, Thomas E.

Lubrication

Systems

Gearing

184 622, 184 271, 475160, F01M 900

Patent

active

055358500

ABSTRACT:
A driven axle assembly for vehicles has a lubricant circulation system, and the axle assembly comprises an axle housing with a main drive and a lubricant liquid in its inside, hollow axle casings fixed to both sides of the axle housing, a hollow wheel hub rotatably connected to each axle housing, the wheel hub having a flange for carrying a vehicle wheel rim as well as, in its inside, a planetary gearing and a multi-plate friction type wet brake, the main drive and the planetary gearing as well as the multi-plate wet brake being interconnected with a drive shaft on both sides of the main drive, respectively, and mechanism for making a lubricant flow within the axle assembly. The improvement achieved by this invention is that the mechanism for lubricant liquid flow is a rotatably driven lubricant liquid pump, which is connected with its inlet opening to the lubricant liquid in the axle housing and with its outlet opening to piping forcing the lubricant liquid to the planetary gearing and the multi-plate wet brake, further, the lubricant liquid pump is an eccentric pump with lock valve being arranged around the drive shaft, and an eccentric portion of the pump is in a torque transmitting connection to the drive shaft, and the outlet opening of the liquid pump communicates with a pressure duct provided around the drive shaft in a concentric manner. Therefore, the lubricating and, mainly, the cooling effect within the drives is considerably increased.

REFERENCES:
patent: 2840186 (1958-06-01), Nyland
patent: 2908351 (1959-10-01), Daley, Jr.
patent: 3097546 (1963-07-01), Kelbel et al.
patent: 3131582 (1964-05-01), Kelbel
patent: 3762503 (1973-10-01), Wilder et al.
patent: 4352301 (1982-10-01), Fleury
patent: 4656885 (1987-04-01), Hori et al.
patent: 4730514 (1988-03-01), Shikata et al.
patent: 4737089 (1988-04-01), Tar et al.
patent: 5316106 (1994-05-01), Baedke et al.

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