Single-ring-gear planetary transmission unit with small difference between teeth of meshing gears

• Main Author: YU, AN BANG
• Format: Patent
• Language: English; French; German
• Published: 30.03.1994
• Edition: 5
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

A single-ring-gear planetary transmission unit with small difference between teeth comprises: at least one low-speed shaft (12) which is provided with only axial rotation; at least one external gear (121), which is provided on the above low-speed shaft; two high-speed shafts (11,11'), which are provided with only axial rotation and on each of which at least two eccentric sleeves (111-113) are rigidly mounted; at least one driving plate (14), which has two mounting holes (142) which are rotatably fitted with the above eccentric sleeves, and at least one driving hole (143) which is provided with one ring gear (141) having a little more teeth than that of its corresponding external gear (121) to engage with the low-speed shaft (12); at least one balancing plate (13,15) to assure a smooth movement of the transmission unit, which has two mounting holes to fit on the high-speed shaft through an eccentric sleeve, and one or more shaft-passing portions; said at least one low-speed shaft passes through the driving hole of at least one driving plate, and the external gear on the low-speed shaft is just positioned to mesh with the ring gear in the driving hole to achieve a planetary transmission with small difference between teeth.