Abstract: A planetary gear device including an axially rotation-protected thrust washer is described herein. The planetary gear device includes gear components revolving around an axis of rotation, wherein the gear components include a planet gear, as well as a planetary carrier for the planet gear. The planetary gear device also includes a gear housing encasing the revolving gear components, a thrust washer supported around or at the axis of rotation, and a rotation protection, by means of which the thrust washer can be positioned so as to be rotation-protected. The rotation protection is an axially-engaging rotation protection, and the thrust washer is arranged such that the axially-engaging rotation protection is provided relative to the planetary carrier and/or relative to the gear housing by means of an axially-protruding protrusion at an interface between the thrust washer, the planetary carrier, and/or the gear housing.

Abstract: A multistage pericyclic gear reducer includes an input shaft, an input external-teeth gear coaxially coupled to and rotatable with the input shaft, a first middle planet ring gear coupled between a first driver ring gear and a first driven wheel. The first driver ring gear meshed with the input external-teeth gear. The multistage pericyclic gear reducer further includes a second middle planet ring gear coupled between the first driven wheel and a second driven wheel, an output external-teeth gear extended through and meshed with both the first middle planet ring gear and the second middle planet ring gear, and a central output shaft coupled to the output external-teeth gear.

Abstract: A drivetrain for an aircraft includes an engine, a driveshaft receiving rotational energy from the engine and a gearbox including a planetary gear system receiving rotational energy from the driveshaft. The planetary gear system includes a sun gear, planet gears, a ring gear and an integral carrier forming flexured carrier posts. Each flexured carrier post supports a respective one of the planet gears and has a fixed proximal end and a cantilevered distal end. The planetary gear system includes flexured roller races, each having a fixed end and a cantilevered end. The fixed end of each flexured roller race is coupled to the cantilevered distal end of a respective flexured carrier post. The planet gears engage with the flexured roller races to rotate about the flexured carrier posts. The cantilevered ends of the flexured roller races experience cantilevered motion to absorb loads from the planet gears.

Abstract: A pericyclic gear reducer may include a middle planet ring gear coupled between a driver ring gear and a driven wheel utilizing a first prismatic joint on a first side of the middle planet ring gear and a second prismatic joint on a second side of the middle planet ring gear. The pericyclic gear reducer may further include an input shaft rotatably coupled to the driver ring gear and the driver ring gear configured to transfer the rotational movement of the input shaft to the middle planet ring gear. The pericyclic gear reducer may further include an output sun gear coupled to the middle planet ring gear. The output sun gear further rotatably coupled to a central output shaft.

Abstract: A multi-speed transmission (01) having a px and having a zx is described. The px is equipped with a sun wheel (84) and at least one planet wheel (08). The cycloidal gear stage equipped with a ring gear (02) with a ring gear axis (20), at least one cycloidal disk (05, 06) rolling in the ring gear, with at least one off-center opening and with a number, equivalent to the number of planet wheels (08), of shared off-center eccentric shafts (03), each connected nonrotatably with a planet wheel (08) and located jointly rotatably around the ring gear axis (20) and having a number of eccentric portions (31, 32), equivalent to the number of vbs (05, 06), which are each supported rotatably in a respective off-center opening of the at least one cycloidal disk (05, 06).

Abstract: The invention relates to a spur gear differential (1), in particular for motor vehicles, comprising a planet carrier (2) for circulating about a differential axis (X), a first output spur gear (3), which is arranged coaxially to the differential axis (X), a second output spur gear (4), which is likewise arranged coaxially to the differential axis (X), and at least one pair (5) of planet gears (6, 7) that mesh with one another, said pair being rotatably arranged in the planet carrier (2), each planet gear (6, 7) meshing with one output spur gear (3, 4). At least one of the output spur gears (3, 4) and/or of the planet gears (6, 7) is conically toothed in such a way that, when the planet gears (6, 7) rotate relative to one another, the at least one of the output spur gears (3, 4) and/or of the planet gears (6, 7) is moved into a position in which a blocking effect is brought about. The invention further relates to a corresponding method for producing a spur gear differential (1) of this type.

Abstract: An eccentric oscillation type speed reducer includes: an external gear which meshes with the internal gear; an eccentric body shaft which oscillates the external gear; and an input shaft bearing which supports the eccentric body shaft. The casing and the external gear are made of resin, and the input shaft bearing is made of metal.

Abstract: A speed reduce according to an embodiment of the present invention includes a case having an outer diameter D, a plurality of crankshafts, and a carrier supporting the crankshafts in a rotatable manner. The carrier is rotatable by the crankshafts relative to the case. Each of the plurality of crankshafts includes a plurality of eccentric members each of which has a diameter dc1 and a crank journal that has a diameter dc2. The crankshaft further includes n1 needles that are arranged around each of the plurality of eccentric members and each of which has a diameter size dr1, and n2 needles that are arranged around the crank journal and each of which has a diameter size dr2. In the speed reducer, relational expression 5.5?D/dc1?7.0 is satisfied.

Abstract: A speed reducer according to one embodiment of the present invention includes a crankshaft and a speed reducing mechanism. The crankshaft includes a gear portion driven by rotation from a drive source and a journal portion formed integrally with the gear portion. The crankshaft rotates about an axis of the journal portion. The speed reducing mechanism decelerates rotation of the crankshaft and outputs the decelerated rotation.

Abstract: A planetary carrier assembly is provided having a main planet carrier body and a stamped planetary spider formed from a planetary spider blank made of sheet or plate material. The planetary spider has a central portion that extends in a plane perpendicular to an axis of the main planet carrier body, and at least two flanges that extend integrally from the central portion in a direction parallel to the axis toward the main planet carrier body that form spider connection legs. The at least two flanges further include integrally connected distal balance portions that extend from ends of the spider connection legs and are folded back toward respective inner surfaces thereof. The ends of the spider connection legs are fastened to the main planet carrier body and the balance portions are configured for mass removal as part of a dynamic balancing of the planetary carrier assembly.

Abstract: A gear mechanism is disclosed with a ring gear, with a flexible gear wheel arranged in the ring gear and with a wave generator which is in contact with the flexible gear wheel and which deforms the flexible gear wheel so that it is in sections in engagement in the ring gear. The gear mechanism can be configured in such a way that interference in the engagement in the gear teeth and the gear backlash are reduced, the noise behavior and the power transmission are improved and the service life is increased. The flexible gear wheel can include at least two flexible gear wheel disks arranged adjacent to one another in the axial direction, and each gear wheel disk can include at least two toothed segments in the circumferential direction which are connected to one another by way of spring segments.

Abstract: A geared architecture for a gas turbine engine includes a central gear supported for rotation about the axis, a plurality of intermediate gears engaged with the central gear and a ring gear circumscribing the intermediate gears. A first flexible coupling is provided between an input shaft driven by a turbine section and the sun gear. The geared architecture provides a power density comprising a power measured in horsepower (HP) related to a weight of the geared architecture within a defined range that benefits overall engine weight and efficiency.

Abstract: A method for operating a hybrid motor vehicle. In one example, the vehicle comprises an internal combustion engine (10) and at least one electric motor (20). As long as at least one parameter of an exhaust gas aftertreatment system (12) of the internal combustion engine (10) lies outside a given range, the starting of the internal combustion engine (10) is delayed and the internal combustion engine (10) is dragged by the electric motor (20). At the same time at least one measure is carried out which changes the parameter.

Abstract: A triple clutch arrangement and a powertrain for a motor vehicle with a dual clutch transmission for use between at least two drive devices and the dual clutch transmission. A first clutch and a second clutch of the triple clutch arrangement are connectable to the first drive device and in each instance to a transmission input shaft. The first drive device and the second drive device are both connected to, or connectable to, a primary side of the first clutch and/or the second clutch via the third clutch.

Abstract: A gear transmission (20) includes a plurality of shift gears (36, 37), a plurality of shifters (55, 56) engaged, respectively, with the plurality of shift gears (36, 37), and a shift drum (58) rotatably operated by a stepped speed changing operational tool (66) to operate the plurality of shifters (55, 56), thus being speed-changed in forward three speed stages. The stepped speed changing operational tool (66) is switched to a neutral position, a forward third speed position, a forward second speed position and a forward first speed position in this cited order.

Abstract: A speed reducer includes a case with internal teeth, where the case has a cylindrical shape and an outer diameter D, an inner cylinder centered around an central axis of the case and having an inner diameter R, where R/D falls within a range of 20% to 45%, crank shafts arranged on a circumference of an imaginary circle centered around the central axis of the case, where the crank shafts are spaced away from each other in a circumferential direction of the imaginary circle, and each crank shaft has first external teeth, an external tooth member having second external teeth meshing with the internal teeth, where the external tooth member is eccentrically movable by the crank shafts, and a carrier supporting the crank shafts in a rotatable manner, where the carrier is rotatable by the crank shafts relative to the case.

Abstract: A planetary gear box, which has a sun gear, a plurality of planet gears, a ring gear, a plurality of planet pins an axially front carrier plate and an axially rear carrier plate, wherein the planet pins are connected to the carrier plates. Provision is made whereby the planet pins, at their axial ends, have in each case one platform, radially oriented slots are formed on the carrier plates, and the platforms are pushed via guide grooves into the radially oriented slots. The invention furthermore relates to a method for the assembly of a planetary gear box.

Abstract: A traction device including a ring member, a carrier, and a sun member and an electric motor, wherein the electric motor is coupled to at least one of the ring member, the carrier, and the sun member.

Abstract: A working vehicle of this invention includes a main speed change structure that includes a continuously variable speed change structure such as an HMT structure and a multi-speed speed change structure capable of switching between a first power transmission state with a first gear ratio and a second power transmission state with a second gear ratio providing a higher speed than the first gear ratio. A control device causes the continuously variable speed change structure to be accelerated to a forward travel side in accordance with an accelerating operation of a speed change operation member in a forward travel direction, and causes the multi-speed speed change structure to be changed from a first power transmission state to a second power transmission state when the rotational speed of the speed change output shaft reaches a switching speed set to exceed a work speed range.

Abstract: A vehicle drive device including: a rotary electric machine that serves as a drive power source for a plurality of wheels; an input drivingly coupled to the rotary electric machine; a counter gear mechanism; a differential gear device that distributes a driving force transmitted from the rotary electric machine via the input and the counter gear mechanism, to the plurality of wheels; a case that accommodates the rotary electric machine, the input, the counter gear mechanism, and the differential gear device; and a support that is a separate member from the case, and is fixed inside the case.