Gear assembly
The present technique, in accordance with certain embodiments, provides a novel gearing assembly. The exemplary assembly includes a planetary or epicyclic gear set that provides the final gear reductions from the output shaft. Specifically, the use of a planetary gear set for final reduction transfers rotation and torque to four planet gears, for instance, which drive a carrier assemblies that, in turn, causes rotation of the output shaft. Advantageously, such an assembly can provide high torque-levels (e.g., 300,000 inch-pounds) via a relatively small-sized device.
1 . An integrated gearing assembly, comprising:
a housing;
an input shaft at least partially disposed in the housing, the input shaft having a first bevel gear disposed thereof;
a first gear set disposed in the housing and having a second bevel gear configured to receive torque from the first bevel gear; and
a planetary gear set disposed in the housing, wherein a sun gear of the planetary gear set is configured to receive torque from the first gear set, the planetary gear set comprising:
a plurality of planet gears disposed about the sun gear;
a carrier assembly configured to support the plurality of planetary gears and including an output shaft; and
a fixed ring gear disposed about the plurality of planetary gears;
wherein the planetary gear set is operable to provide at least 300,000 inch-pounds of torque to the output shaft.
2 . The gearing assembly of claim 1 , wherein the output shaft is integral with respect to the carrier assembly.
3 . The gearing assembly of claim 1 , wherein the planetary gear set is operable to provide at least 1,000,000 inch-pounds of torque to the output shaft.
4 . The gearing assembly of claim 1 , wherein the planetary gear set is operable to provide at least 3,000,000 inch-pounds of torque to the output shaft.
5 . The gearing assembly of claim 1 , wherein the gearing assembly weighs less than 20,000 pounds.
6 . An integrated gearing assembly, comprising:
a housing;
an input shaft extending from the housing;
a first gearing set configured to receive torque from the input shaft; and
a planetary gear set disposed in the housing and mechanically coupled to the first gearing set, the planetary gear set comprising:
a sun gear operable to receive torque from the first gearing set;
a plurality of planetary gears disposed in a carrier assembly and about the sun gear; and
a stationary ring gear disposed about the sun gear and the plurality of planetary gears;
wherein the carrier assembly commands rotation of an output shaft; and
wherein the planetary gear set is operable to provide at least 300,000 inch-pounds of torque to the output shaft.
7 . The gearing assembly of claim 6 , wherein the planetary gear set is operable to provide at least 3,000,000 inch-pounds of torque to the output shaft.
8 . The gearing assembly of claim 6 , wherein the input shaft is disposed at 90 degrees with respect to the output shaft.
9 . The gearing assembly of claim 6 , wherein the input shaft is generally parallel to the output shaft.
10 . An integrated gearing assembly, comprising:
a housing;
an input shaft and coupleable to a torque-providing device, the input shaft having a first bevel gear disposed on of the shaft and inside the housing;
a first internal shaft having a second bevel gear in engagement with the first bevel gear, and having a first round gear disposed thereon;
a second internal shaft having a second intermediate gear disposed thereon, the second intermediate gear being in engage with the first intermediate gear;
a planetary gear set disposed in the housing and comprising a sun gear configured to receive torque from the second internal shaft, a plurality of planet gears disposed about the sun gear and housed in a carrier assembly, and a stationary ring gear disposed about the plurality of planetary gears and the sun gear; and
an output shaft, wherein the rotation of the carrier assembly defines the rotation of the output shaft.
11 . The gearing assembly of claim 10 , wherein the second bevel gear includes a greater number of teeth than the first bevel gear.
12 . The gearing assembly of claim 11 , wherein the second intermediate gear includes a greater number of teeth than the first intermediate gear.
13 . The gearing assembly of claim 12 , wherein each planetary gear includes a greater number of teeth than the sun gear.
14 . The gearing assembly of claim 10 , wherein the planetary gear set is operable to provide at least 300,000 inch-pounds of torque to the output shaft.
15 . The gearing assembly of claim 14 , wherein the planetary gear set is operable to provide at least 3,000,000 inch-pounds of torque to the output shaft.
16 . The gearing assembly of claim 10 , wherein the output shaft integrated with respect to the carrier assembly.
17 . The gearing assembly of claim 10 , wherein the planetary gear set includes four planetary gears.
18 . A method of operating a gearing assembly, comprising:
providing an input shaft operable to receive an input torque from a torque-producing device; and
routing torque from the input shaft to a planetary gear set, the planetary gear set being operable to rotate an output shaft that is askew with respect to the input shaft, such that the planetary gear set provides at least 300,000 inch-pounds of torque to the output shaft.
19 . The method of claim 18 , comprising providing at least 1,000,000 inch-pounds of torque to the output shaft.
20 . A method of manufacturing an integrated gearing assembly, comprising:
disposing a first shaft extending from a housing;
disposing a first gearing set in the housing, the first gearing set being configured to receive torque from the first shaft;
disposing a planetary gear set in the housing, the planetary gear set being mechanically coupled to the first gearing set, the planetary gear set comprising:
a sun gear operable to receive torque from the first gearing set; and
a plurality of planet gears disposed in a carrier assembly and about the sun gear; and
a stationary ring gear disposed about the sun gear and the plurality of planetary gears;
wherein the carrier assembly commands rotation of a second shaft extending from the housing, and wherein the planetary gear set is operable to provide at least 300,000 inch-pounds of torque to the second shaft.