Trencher digging chain sprocket drive
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United States of America Patent
Stats
-
May 4, 1982
Grant Date -
N/A
app pub date -
Dec 8, 1980
filing date -
Dec 8, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drive train assembly is provided for the digging chain drive sprocket and spoil dispersing auger of a hydrostatically operated trenching machine. The drive assembly is totally enclosed and includes a hydraulic motor, a rotatable drive sprocket-hub subassembly, a planetary gearbox, and a boom lift casting. The planetary gearbox and hydraulic motor are mounted on opposite ends of the boom lift casting, and they are drivingly interconnected by a drive shaft that passes through the casting. The planetary gearbox includes a housing for rotatably mounting the spoil dispersing auger such that the gearbox housing and auger act as a heat sink to dissipate heat generated by the driven gears within the gearbox. The digging chain drive sprocket subassembly is rotatably mounted on the boom lift casting adjacent the planetary gearbox, and it is connected to the gearbox whereby the digging chain drive sprocket and auger are driven in unison by the hydraulic motor.
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