| 摘要 |
FIELD: mechanical engineering. SUBSTANCE: drive has three driving bevel gears 3, 17 and 18, output shaft 6, two controlled friction members 7 and 8, two controlled clutches 19 and 20, two three-member planetary mechanisms including sun gears 9 and 10, carriers 11 and 12 with cylindrical planet pinions 13 and 14, respectively, and epicyclic trains 15 and 16. Drive has two pairs of additional driven bevel gears 21, 22 and 23, 24, each provided with internal gear rim to engage with additional rim of corresponding cylindrical planet pinions 13 and 14. Reversing of output shaft 6 without changing direction of rotation of input shaft 2 is provided by alternate engagement of friction members 7 and 8. Four speed 5 of rotation of output shaft 6 can be provided by changing order and number of engagements of controlled clutches 19 and 20. EFFECT: enlarged kinematic possibilities of drive. 1 cl, 2 dwg |
