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US 7,351,177 B2Granted
Series of gearboxes
AssigneeSew-Eurodrive GmbH & Co. KG
InventorMichael Christ
Life of this patent
Estimating the term…
Abstract
A series of gear systems is disclosed, each of which comprises least one double-shaft, reversible planetary stage including a combination of an open positive gear system having lantern-gear teeth and an output system. “z1” represents the lantern-gear arrangement, and a number of teeth z2 is assigned to at least one planetary gear. The series of gear systems comprises several variants of size categories. Each of the several variants comprises internal gears in which external rollers are seated in grooves such that the intervals are different in the different variants and are produced by the regular elimination of individual external rollers.
Claims11
A gearbox series, comprising:
- a plurality of gearboxes, including a first gearbox and a second gearbox, each of said plurality of gearboxes comprising at least one transmission stage comprising a first gear and a second gear that meshes with said first gear, one of said first gear and said second gear being a lantern gear and the other of said first gear and said second gear being a spur gear, wherein
- said lantern gear of said first gearbox has a number z1,1 of rods, each of said z1,1 rods constituting a respective tooth of said lantern gear of said first gearbox, a number z0,1 of groove positions regularly spaced along a circumference of said lantern gear of said first gearbox, said number z0,1 is greater than 1 and is a product of two or more prime factors, and at least said number z1,1 of grooves machined for receiving a rod constituting a tooth of said lantern gear of said first gearbox, each of said at least Z1,1 machined grooves being machined at a respective one of said z0,1 groove positions and each of said number z1,1 of said at least z1,1 machined grooves receiving a respective one of said z1,1 rods,
- said spur gear of said first gearbox has z2,1 teeth that engage said rods of said lantern gear of said first gearbox to effect said meshing of said first and second gears of said first gearbox,
- said lantern gear of said second gearbox has a number z1,2 of rods, each of said z1,2 rods constituting a respective tooth of said lantern gear of said second gearbox, a number z0,2 of groove positions regularly spaced along a circumference of said lantern gear of said second gearbox, said number z0,2 is greater than 1 and is a product of two or more prime factors, and at least said number z1,2 of grooves machined for receiving a rod constituting a tooth of said lantern gear of said second gearbox, each of said at least z1,2 machined grooves being machined at a respective one of said z0,2 groove positions and each of said number z1,2 of said at least z1,2 machined grooves receiving a respective one of said z1,2 rods,
- said spur gear of said second gearbox has z2,2 teeth that engage said rods of said lantern gear of said second gearbox to effect said meshing of said first and second gears of said second gearbox,
- said number z0,2 equals said number z0,1,
- said number z1,2 and said number z1,1 are unequal,
- said number z1,1 equals said number z0,1 divided by p1,
- said number z1,2 equals said number z0,2 divided by p2, where p1and p2 are natural numbers, and
- said first gearbox differs from said second gearbox with respect to at least one of a transmission ratio, a maximal transmissible moment of torque, a ripple in transmitted torque, and a quietness of running.
7 more elements
A gearbox series, comprising:
- a plurality of gearboxes, including a first gearbox, a second gearbox and a third gearbox, each of said plurality of gearboxes comprising at least one transmission stage comprising a first gear and a second gear that meshes with said first gear, one of said first gear and said second gear being a lantern gear and the other of said first gear and said second gear being a spur gear, wherein
- said lantern gear of said first gearbox has a number z1,1 of rods, each of said z1,1 rods constituting a respective tooth of said lantern gear of said first gearbox, a number z0,1 of groove positions regularly spaced along a circumference of said lantern gear of said first gearbox, said number z0,1 is greater than 1 and is a product of two or more prime factors, and at least said number z1,1 of grooves machined for receiving a rod constituting a tooth of said lantern gear of said first gearbox, each of said at least z1,1 machined grooves being machined at a respective one of said z0,1 groove positions and each of said number z1,1 of said at least z1,1 machined grooves receiving a respective one of said z1,1 rods,
- said spur gear of said first gearbox has z2,1 teeth that engage said rods of said lantern gear of said first gearbox to effect said meshing of said first and second gears of said first gearbox,
- said lantern gear of said second gearbox has a number z1,2 of rods, each of said z1,2 rods constituting a respective tooth of said lantern gear of said second gearbox, a number z0,2 of groove positions regularly spaced along a circumference of said lantern gear of said second gearbox, said number z0,2 is greater than 1 and is a product of two or more prime factors, and at least said number z1,2 of grooves machined for receiving a rod constituting a tooth of said lantern gear of said second gearbox, each of said at least z1,2 machined grooves being machined at a respective one of said z0,2 groove positions and each of said number z1,2 of said at least z1,2 machined grooves receiving a respective one of said z1,2 rods,
- said spur gear of said second gearbox has z2,2 teeth that engage said rods of said lantern gear of said second gearbox to effect said meshing of said first and second gears of said second gearbox,
- said lantern gear of said third gearbox has a number z1,3 of rods, each of said z1,3 rods constituting a respective tooth of said lantern gear of said third gearbox, a number z0,3 of groove positions regularly spaced along a circumference of said lantern gear of said third gearbox, said number z0,3 is greater than 1 and is a product of two or more prime factors, and at least said number z1,3 of grooves machined for receiving a rod constituting a tooth of said lantern gear of said third gearbox, each of said at least z1,3 machined grooves being machined at a respective one of said z0,3 groove positions and each of said number z1,3 of said at least z1,3 machined grooves receiving a respective one of said z1,3 rods,
- said spur gear of said third gearbox has z2,3 teeth that engage said rods of said lantern gear of said third gearbox to effect said meshing of said first and second gears of said third gearbox,
- said number z0,1, said number z0,2 and said number z0,3 are equal,
- said number z1,1, said number z1,2 and said number z1,3 are equal,
- said number z2,1, said number z2,2 and said number z2,3 constitute a first degree arithmetic series, and
- said first gearbox, said second gearbox and said third gearbox are mutually different with respect to at least one of a transmission ratio, a maximal transmissible moment of torque, a ripple in transmitted torque, and a quietness of running.
8 more elements
Dependencies are inferred from the claim text.