Automatically Compressing and Friction-Driven Speed Reduction Device

摘要

An automatically compressing and friction-driven speed reduction device including a central shaft that is a cylinder, a planet wheel in a disc shape, and an inner compression ring and an outer compression ring sleeved outside the planet wheel; the maximum circumference part of the planet wheel is a planar excircle, and the surfaces on the two sides are machined into inclined planes having certain obliqueness; a planet shaft is installed in the middle of the planet wheel, and fixed on a housing; the planet shaft and the planet wheel are provided with a rolling needle therebetween. The device can automatically adjust frictional pressure in real time according to the magnitude of load torque, thus greatly reducing friction loss, improving the efficiency of friction-driven speed reduction device, and prolonging the service life of the friction-driven speed reduction device.

主权项

1. An automatically compressing and friction-driven speed reduction device, wherein the device comprises a central shaft (1), a planet wheel (2), and an inner compression ring (3) and an outer compression ring (4) sleeved outside the planet wheel (2); the central shaft (1) is a cylinder; the planet wheel (2) is in a disc shape; the maximum circumference part of the planet wheel (2) is a planar excircle, and the surfaces on the two sides are machined into inclined planes having certain obliqueness; a planet shaft (6) is installed in the middle of the planet wheel (2), and fixed on a housing (8); the planet shaft (6) and the planet wheel (2) are provided with a rolling needle (7) therebetween so as to reduce frictional resistance; the inner compression ring (3) and the outer compression ring (4) are provided with multi-fluted threads thereon, and can relatively rotate; the incircle surfaces on the inner sides of the inner compression ring (3) and the outer compression ring (4) are machined into inclined planes having the same obliqueness with the surfaces on the two sides of the planet wheel; the inner compression ring (3) and the outer compression ring (4) are provided with a tension spring (5) therebetween, so as to preset definite pressures between the inner compression ring (3) and the outer compression ring (4), between the inner compression ring (3) or the outer compression ring (4) and the planet wheel (2), and between the planet wheel (2) and the central shaft (1).