A gearbox for an engine includes a rotating element and a turbomachine, the turbomachine includes a shaft, and the rotating element is driven by the shaft across the gearbox. The gearbox includes a ring gear, a first sun gear and a second sun gear each configured to be driven by the shaft of the turbomachine, a first planet gear comprising a first gear portion and a second gear portion, and a second planet gear comprising a first gear portion and a second gear portion.

A gearbox for an engine includes a rotating element and a turbomachine, the turbomachine includes a shaft, and the rotating element is driven by the shaft across the gearbox. The gearbox includes a ring gear, a first sun gear and a second sun gear each configured to be driven by the shaft of the turbomachine, a first planet gear comprising a first gear portion and a second gear portion, and a second planet gear comprising a first gear portion and a second gear portion.

A mechanical reducer with high reduction ratio, includes a box-like case (C), an input shaft (I), rotatably supported by the case and adapted to be brought into rotation at an input angular speed (VI), and an output shaft (U), mechanically connected to the input shaft via reduction members (1) and adapted to provide an output angular speed (VU) that is reduced with respect to the input speed. In the reducer device (300), the reduction members include: an input movable drive group (310), conducted in rotation by the input shaft and including one first secondary toothed wheel (Z2) and one second secondary toothed wheel (Z3) integral therewith; a reference fixed drive group (320), including a reference toothed wheel (Z1) which engages the first secondary toothed wheel; an output movable drive group (330), mechanically connected to the output shaft and including an output toothed wheel (Z4) which engages the second secondary wheel.

A mechanical reducer with high reduction ratio, includes a box-like case (C), an input shaft (I), rotatably supported by the case and adapted to be brought into rotation at an input angular speed (VI), and an output shaft (U), mechanically connected to the input shaft via reduction members (1) and adapted to provide an output angular speed (VU) that is reduced with respect to the input speed. In the reducer device (300), the reduction members include: an input movable drive group (310), conducted in rotation by the input shaft and including one first secondary toothed wheel (Z2) and one second secondary toothed wheel (Z3) integral therewith; a reference fixed drive group (320), including a reference toothed wheel (Z1) which engages the first secondary toothed wheel; an output movable drive group (330), mechanically connected to the output shaft and including an output toothed wheel (Z4) which engages the second secondary wheel.

A washing machine driving mechanism includes a shaftless rotator (23) for generating rotational energy; a gear reduction mechanism (200) mounted on the rotator (23) and configured to obtain rotational energy from an eccentric position of the rotator (23) and output the energy with or without speed reduction; and a first driving part (11) connected with the gear reduction mechanism (200) and configured to supply the rotational energy with or without the speed reduction to respective execution parts of the washing machine. The rotator is a rotor of a motor, and an output rotating shaft on the rotor is canceled. The washing machine driving mechanism has a technical effect of being compact in structure and small in space occupancy.

A washing machine driving mechanism includes a shaftless rotator (23) for generating rotational energy; a gear reduction mechanism (200) mounted on the rotator (23) and configured to obtain rotational energy from an eccentric position of the rotator (23) and output the energy with or without speed reduction; and a first driving part (11) connected with the gear reduction mechanism (200) and configured to supply the rotational energy with or without the speed reduction to respective execution parts of the washing machine. The rotator is a rotor of a motor, and an output rotating shaft on the rotor is canceled. The washing machine driving mechanism has a technical effect of being compact in structure and small in space occupancy.

A mechanism includes a housing, a transmission axle arranged at a center of the housing, an internally toothed ring track fixed to an inner circumference of the housing, and a coaxial gear set arranged between the transmission axle and the internally toothed ring track. The coaxial gear set includes a sun gear, a planetary gear set, and an output member. The planetary gear set includes a first carrier frame and a second carrier frame rotatably arranged at two ends of the sun gear. Multiple planetary gears are rotatably arranged between the first and second carrier frames and around the sun gear. Each of the planetary gears is in meshing engagement with the output member. The coaxial gear set is made in a modularized form for subsequent assembly in an optional manner, so as to provide an efficacy of easing assembling and servicing operations.

A mechanism includes a housing, a transmission axle arranged at a center of the housing, an internally toothed ring track fixed to an inner circumference of the housing, and a coaxial gear set arranged between the transmission axle and the internally toothed ring track. The coaxial gear set includes a sun gear, a planetary gear set, and an output member. The planetary gear set includes a first carrier frame and a second carrier frame rotatably arranged at two ends of the sun gear. Multiple planetary gears are rotatably arranged between the first and second carrier frames and around the sun gear. Each of the planetary gears is in meshing engagement with the output member. The coaxial gear set is made in a modularized form for subsequent assembly in an optional manner, so as to provide an efficacy of easing assembling and servicing operations.

A mounting structure and a gear motor are disclosed. The mounting structure includes at least one first hole formed in a first component of the gear motor, at least one second hole formed in a second component of the gear motor, arranged coaxially with the first hole, and at least one expansion member extending into the first and second holes. The expansion member has an interference fit with one of the first and second holes, and has a transition fit with the other of the first and second holes. The present invention can effectively prevent falling off of the expansion member, and reduce the assembly difficulties of the gear motor as well as the degree of deformation of the expansion member during the assembly process.

A mounting structure and a gear motor are disclosed. The mounting structure includes at least one first hole formed in a first component of the gear motor, at least one second hole formed in a second component of the gear motor, arranged coaxially with the first hole, and at least one expansion member extending into the first and second holes. The expansion member has an interference fit with one of the first and second holes, and has a transition fit with the other of the first and second holes. The present invention can effectively prevent falling off of the expansion member, and reduce the assembly difficulties of the gear motor as well as the degree of deformation of the expansion member during the assembly process.