A housing (02) with a cylindrical inner housing wall (21) that is disposed concentrically about a cylinder axis (20) and is provided with an inner set of teeth (22). It further includes an input shaft (03), supported rotatably about the cylinder axis (20), having at least two eccentric portions (31) of identical eccentricity (32) that are disposed rotationally about the longitudinal axis (30) of the input shaft (03). Moreover, it includes an output shaft (04), supported rotatably about the cylinder axis (20), and the longitudinal axes (30, 40) of the input shaft (03) and output shaft (04) coincide with the cylinder axis (20). Furthermore, it includes at least two cycloid disks (05, 06, 07), of which each cycloid disk (05, 06, 07) is disposed rotatably about its own central rotary axis (50, 60, 70) on an eccentric portion (31) and has an outer set of teeth (51, 61, 71), meshing with the inner set of teeth (22)/ The rotary axis (50, 60, 70) of each cycloid disk (05, 06, 07) is offset by the eccentricity (32) to the cylinder axis (20), and the diameter of the cycloid disks (05, 06, 07) is dimensioned such that their outer set of teeth (51, 61, 71) in one direction comes to mesh with the inner set of teeth (22), in which direction the eccentric portion (31), on which a cycloid disk (05, 06, 07) is disposed, is pointing at the moment. Conversely, in the opposite direction, the outer set of teeth (51, 61, 71) is free of an engagement with the inner set of teeth (22), and the cycloid disks (05, 06, 07) each have reference faces (53, 63). Additionally, it includes at least one output device (08), supported rotatably about the cylinder axis (20), which output device is operatively connected to at least one cycloid disk (05, 06, 07) such that the motions of one or more cycloid disks (05, 06, 07), as they roll in the housing (02), are converted into a rotary motion of the output shaft (04). The cycloid gear (01) is distinguished by an even-numbered gear ratio i. The outer sets of teeth (51, 61, 71) of the cycloid disks (05, 06, 07) each have an even number of teeth. The inner set of teeth (22) of the housing (02) has a number of teeth N+Z or NZ that is higher or lower than a (whole) number Z.

A food processing machine includes a head extending over a bowl receiving location, the head including a rotatable output member for receiving a mixer tool. A drive system for effecting rotation of the rotatable output member includes a primary drive motor connected through a variable ratio transmission assembly to drive the output member, and a modulator motor linked to operate the variable ratio transmission assembly.

A food processing machine includes a head extending over a bowl receiving location, the head including a rotatable output member for receiving a mixer tool. A drive system for effecting rotation of the rotatable output member includes a primary drive motor connected through a variable ratio transmission assembly to drive the output member, and a modulator motor linked to operate the variable ratio transmission assembly.

A planetary transmission device with a small tooth number difference for implementing smart workload self-adaptation comprises a left planetary gear (5), a right planetary gear (2), a left-end disk (4), a right-end disk (1), a housing (3) and a connection member (8). One end of the connection member (8) axially runs through the left planetary gear (5) and the right planetary gear (2). End parts of both ends of the connection member (8) are fixedly connected to the left-end disk (4) and the right-end disk (1) respectively. The left planetary gear (5) is engaged with both the tooth profile on the left-end disk (4) and the tooth profile on the housing (3). The right planetary gear (2) is engaged with the tooth profile on the right-end disk (1) and the tooth profile on the housing (3). The left planetary gear (5), the right planetary gear (2), the left-end disk (4), the right-end disk (1) and the housing (3) form a force closure mechanism. By means of the force closure mechanism formed by the left planetary gear (5), the right planetary gear (2), the left-end disk (4), the right-end disk (1) and the housing (3), the transmission device can automatically and steplessly adjust a transmission ratio and an output rotation speed according to a change in load without depending on a measurement and control system, and has a simple structure and low costs.

A planetary transmission device with a small tooth number difference for implementing smart workload self-adaptation comprises a left planetary gear (5), a right planetary gear (2), a left-end disk (4), a right-end disk (1), a housing (3) and a connection member (8). One end of the connection member (8) axially runs through the left planetary gear (5) and the right planetary gear (2). End parts of both ends of the connection member (8) are fixedly connected to the left-end disk (4) and the right-end disk (1) respectively. The left planetary gear (5) is engaged with both the tooth profile on the left-end disk (4) and the tooth profile on the housing (3). The right planetary gear (2) is engaged with the tooth profile on the right-end disk (1) and the tooth profile on the housing (3). The left planetary gear (5), the right planetary gear (2), the left-end disk (4), the right-end disk (1) and the housing (3) form a force closure mechanism. By means of the force closure mechanism formed by the left planetary gear (5), the right planetary gear (2), the left-end disk (4), the right-end disk (1) and the housing (3), the transmission device can automatically and steplessly adjust a transmission ratio and an output rotation speed according to a change in load without depending on a measurement and control system, and has a simple structure and low costs.

In a strain wave gearing, the addendum tooth profile of an inner gear is defined by a formula and that of an outer gear is by another formula at a principal cross-section located at a tooth-trace-direction center of the outer gear, on the basis of a movement locus (Mc) of =1 by the teeth of the outer gear with respect to those of the inner gear. The tooth profiles of the dedenda of each of the inner gear and the outer gear are set to any shape that does not interfere with the tooth profile of the addendum of the other gear. It is possible to avoid superimposed flexion-induced bending stresses and tensile stresses caused by load torque arising at the long-axis locations of the outer gear, and the transmission torque capacity of a strain wave gearing can be improved.

The disclosure relates to a powertrain for a vehicle, the powertrain including: a transmission, a propeller shaft and a differential gear, wherein the transmission comprises an output shaft which is drivingly connected or connectable to the propeller shaft, the propeller shaft is drivingly connected to the differential gear and the differential gear is configured to provide a driving torque to a respective half-shaft of a drive axle for driving the vehicle, the transmission further including: an input shaft configured to be drivingly connected to a power unit; a planetary gearset; a first gearset and a second gearset. The disclosure also relates to a vehicle.

The disclosure relates to a powertrain for a vehicle, the powertrain including: a transmission, a propeller shaft and a differential gear, wherein the transmission comprises an output shaft which is drivingly connected or connectable to the propeller shaft, the propeller shaft is drivingly connected to the differential gear and the differential gear is configured to provide a driving torque to a respective half-shaft of a drive axle for driving the vehicle, the transmission further including: an input shaft configured to be drivingly connected to a power unit; a planetary gearset; a first gearset and a second gearset. The disclosure also relates to a vehicle.

A speed change device is provided, including: an outer ring part, an interior thereof including at least one outer gear; a spindle, coaxially pivoted to the outer ring part with the at least one outer gear, having a central axis, an outer circumference of the spindle having a plurality of cam assembling portions; a plurality of cam parts, respectively disassemblably assembled to the plurality of cam assembling portions, synchronizingly rotating with the spindle, at least two of the plurality of cam parts having a phase difference of angle which is larger than zero degree; a plurality of inner gears, being rigid, respectively sleeved on the plurality of cam parts and being non-rotatable with the plurality of the cam parts, respectively meshed with the at least one outer gear.

A speed change device is provided, including: an outer ring part, an interior thereof including at least one outer gear; a spindle, coaxially pivoted to the outer ring part with the at least one outer gear, having a central axis, an outer circumference of the spindle having a plurality of cam assembling portions; a plurality of cam parts, respectively disassemblably assembled to the plurality of cam assembling portions, synchronizingly rotating with the spindle, at least two of the plurality of cam parts having a phase difference of angle which is larger than zero degree; a plurality of inner gears, being rigid, respectively sleeved on the plurality of cam parts and being non-rotatable with the plurality of the cam parts, respectively meshed with the at least one outer gear.