The present invention provides a transmission mechanism that enables a reduction in motion transmission error between an input-shaft side and an output-shaft side. A transmission mechanism is provided with a cam, a plurality of pins arranged along a side surface of the cam, guide plates in which a plurality of guide holes are provided, and gears capable of engaging the pins. In conjunction with rotation of the cam, each pin is guided by the corresponding guide hole and moves along the cam and the gears, thereby causing the guide plates or gears to rotate relative to the cam. The plurality of pins are divided into a plurality of groups, and the pins in each group are coupled in series, but are not coupled to the pins in the other groups.

The present invention provides a transmission mechanism that enables a reduction in motion transmission error between an input-shaft side and an output-shaft side. A transmission mechanism is provided with a cam, a plurality of pins arranged along a side surface of the cam, guide plates in which a plurality of guide holes are provided, and gears capable of engaging the pins. In conjunction with rotation of the cam, each pin is guided by the corresponding guide hole and moves along the cam and the gears, thereby causing the guide plates or gears to rotate relative to the cam. The plurality of pins are divided into a plurality of groups, and the pins in each group are coupled in series, but are not coupled to the pins in the other groups.

Coaxial gear mechanism, with a toothing system which is oriented axially with regard to a rotational axis of the coaxial gear mechanism; a tooth carrier with axially oriented guides; teeth which are received in the guides for engagement with the toothing system, the teeth being oriented with their respective longitudinal axes axially in the guides and being mounted in the guides such that they can be displaced axially; a cam disc which can be rotated about the rotational axis for the axial drive of the teeth; and a housing, in which a setting element for mounting the cam disc is provided, at least one bearing with rolling bodies being arranged between the setting element and the cam disc.

Coaxial gear mechanism, with a toothing system which is oriented axially with regard to a rotational axis of the coaxial gear mechanism; a tooth carrier with axially oriented guides; teeth which are received in the guides for engagement with the toothing system, the teeth being oriented with their respective longitudinal axes axially in the guides and being mounted in the guides such that they can be displaced axially; a cam disc which can be rotated about the rotational axis for the axial drive of the teeth; and a housing, in which a setting element for mounting the cam disc is provided, at least one bearing with rolling bodies being arranged between the setting element and the cam disc.

A harmonic ring gear system can include at least one inner gear with external toothing, the at least one inner gear defining an axis of rotation; at least one outer gear with internal toothing arranged concentrically to the at least one inner gear about the axis of rotation, the internal toothing spaced apart from the external toothing; a pin ring positioned between the at least one inner gear and the at least one outer gear, the pin ring comprising a multiplicity of pins; and a rotary transmitter configured to lift a portion of the pins of the multiplicity of pins off the external toothing and press the portion of the pins into the internal toothing.

A harmonic ring gear system can include at least one inner gear with external toothing, the at least one inner gear defining an axis of rotation; at least one outer gear with internal toothing arranged concentrically to the at least one inner gear about the axis of rotation, the internal toothing spaced apart from the external toothing; a pin ring positioned between the at least one inner gear and the at least one outer gear, the pin ring comprising a multiplicity of pins; and a rotary transmitter configured to lift a portion of the pins of the multiplicity of pins off the external toothing and press the portion of the pins into the internal toothing.

The invention relates to a wind turbine (2) comprising: a nacelle (8) provided on the top of a tower (12), a rotor including a hub (6) and a number of blades (4), a main shaft (16) configured to be driven by the rotor about a main axis and supported on the nacelle (8), a generator (28) having a generator rotor and generator stator, and a gear system (25) arranged to increase the rotational speed between said rotor and said generator rotor. The gear system (25) comprises: a fixed ring gear (50), an input member (53) coupled to or driven by the main shaft (16) having a plurality of radially movable tooth segments (52,63) carried in guiding slots and engageable at outer ends with the ring gear (50), a central output member (55) within the input member (53) having an outer eccentric profile acted on and driven by inner ends of radially movable tooth segments (52,63), whereby rotary movement of the input member (53) drives the radially movable tooth segments (52,63) through engagement with the ring gear (50) and effects rotation of the central output member (55).

A bearing rotatably supported by a housing. The bearing having one radial and two axial parts all including a plurality of rolling elements. The rolling elements of the radial bearing part contact an outer peripheral surface of an output shaft. The rolling elements of one or two of the axial bearing parts contact the outer peripheral surface of the output shaft. The rolling elements of the other axial bearing part contact a first ring-shaped part fixed to the output shaft to form an output-shaft side raceway surface. The rolling elements of the radial bearing part and of the two axial bearing parts contact the surface of a second ring-shaped part disposed on the output shaft, or the rolling elements of the radial bearing part and of one of the axial bearing parts directly contacts the inner surface of the housing to form an outer raceway surface.

A bearing rotatably supported by a housing. The bearing having one radial and two axial parts all including a plurality of rolling elements. The rolling elements of the radial bearing part contact an outer peripheral surface of an output shaft. The rolling elements of one or two of the axial bearing parts contact the outer peripheral surface of the output shaft. The rolling elements of the other axial bearing part contact a first ring-shaped part fixed to the output shaft to form an output-shaft side raceway surface. The rolling elements of the radial bearing part and of the two axial bearing parts contact the surface of a second ring-shaped part disposed on the output shaft, or the rolling elements of the radial bearing part and of one of the axial bearing parts directly contacts the inner surface of the housing to form an outer raceway surface.

A coaxial gear set comprising: a crankshaft which can be rotated about an axis of rotation and has at least one connecting rod bearing; and multiple, preferably at least three, pistons, each connected to the crankshaft by means of a connecting rod and which each have a toothing with at least one tooth on a first end face facing away from the axis of rotation. The coaxial gear set also comprises: a hollow shaft having internal toothing, wherein the pistons are located inside the hollow shaft when viewed in a plane normal to the axis of rotation; and a guide unit, wherein the pistons are each linearly guided in the guide unit and can be moved back and forth parallel to a radial direction normal to the axis of rotation, as a result of which the toothings of the first end faces of the pistons can be successively brought into meshing engagement with the internal toothing and out of meshing engagement with said internal toothing.