Powered jacking leg

摘要

Disclosed is a gearbox for a powered leg assembly for trailers. The gearbox includes a plurality of gears mounted in a cage, the cage being displaceable from a first low speed position through a neutral position to a second high speed position, and a lever coupled to an eccentric whereby movement of the lever causes displacement of the cage causing the gears to mesh to assume a low speed, neutral and high speed configurations.

主权项

1. A gearbox for a multi-speed powered leg assembly for trailers, the gearbox comprising:
a mechanically driven primary gear arrangement having a plurality of gears; a drive gear coupled to a drive shaft configured to raise or lower at least one foot of the powered leg assembly, a carriage assembly with a secondary gear arrangement pivotably mounted about a centerline of the drive gear, the carriage assembly containing a plurality of secondary gears for selective meshing the primary gear arrangement with the drive gear, a switching lever eccentrically coupled to the carriage assembly for selection of a high speed position, a low speed position, or a neutral position, wherein the rotation of the switching lever to the low speed position pivotally displaces the carriage assembly to mesh at least one of the plurality of secondary gears with the primary gear arrangement and the drive gear, wherein the rotation of the switching lever to the high speed position pivotally displaces the carriage assembly to mesh at least another one of the plurality of secondary gears with the primary gear arrangement and the drive gear, wherein the rotation of the switching lever to the neutral position pivotally displaces the carriage assembly to disengage the plurality of secondary gears from providing a driven meshing engagement between the drive gear and primary gear arrangement.