5-10t Internal Combustion Counterbalance Forklift Truck Operation & Maintenance Manual
4.3 Wheel-sided Reducer
The wheel-sided reducer includes one sun gear, one unit of planetary gears, and one
internal gear ring. The two sets of wheel-sided reduction gear devices are respectively
installed on the two ends of drive axle housing. The sun gear is mounted on the half shaft
using spline and retained by retainer ring using spring. The planetary bracket is fitted on
the wheel hub, and one unit of planetary gears is respectively mounted on the shaft of one
unit of planetary gears fitted inside the planetary bracket. The internal gear ring (or
through the seat of internal gear ring) is assembled on the drive axle housing using spline.
The principle for power transmission is as follows: Refer to Fig 4-4.
When sun gear rotates (namely the rotation of half shaft), the rotation is transmitted to the
planetary gears and the internal gear ring. However, as the internal gear ring is fixed on
the two ends of drive axle housing, the planetary gear will rotate around the sun gear, and
it rotates automatically at the same time. The planetary gear is mounted on the bracket of
the planetary gear while this bracket is mutually coupled with wheel hub, the wheel rim is
also linked with the wheel hub, and thus, the power of half shaft actuates the rotation of
wheel.
Fig 4-4 Wheel-sided Reducer
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