A testing device includes a drive unit and an output unit, which are connected together via first and second gearboxes. The testing device is configured to adjustably tilt and/or adjustably displace at least one of the first and second gearboxes for at least partially simultaneous testing of the first and second gearboxes.

A system for predictive modeling of wear or damage to a driven gear of an open gear set is provided. A method of developing a predictive model of wear or damage to a driven gear of an open gear set is also provided. The system and method allow for autonomous, non-interfering dynamic collection of data that are used to assist in developing maintenance schedules for large open gear sets. More specifically, it is directed to utilizing data from monitored pinion gears of girth gear sets under full load operating conditions to predict health of a girth gear in the girth gear set.

A system for predictive modeling of wear or damage to a driven gear of an open gear set is provided. A method of developing a predictive model of wear or damage to a driven gear of an open gear set is also provided. The system and method allow for autonomous, non-interfering dynamic collection of data that are used to assist in developing maintenance schedules for large open gear sets. More specifically, it is directed to utilizing data from monitored pinion gears of girth gear sets under full load operating conditions to predict health of a girth gear in the girth gear set.

A computer-implemented method for identifying a gearwheel (5) that induces vibrations in a transmission includes training a generic AI model with a training data set of a group of reference gearwheels (19). At least one reference profile of a surface (21) of the reference gearwheel (19) and a gearwheel category are provided for each reference gearwheel (19) of the group. The method also includes determining a profile of a surface (11) of a gearwheel (5) and assigning one of the gearwheel categories to the gearwheel (5) on the basis of the determined profile by the trained AI model.

A computer-implemented method for identifying a gearwheel (5) that induces vibrations in a transmission includes training a generic AI model with a training data set of a group of reference gearwheels (19). At least one reference profile of a surface (21) of the reference gearwheel (19) and a gearwheel category are provided for each reference gearwheel (19) of the group. The method also includes determining a profile of a surface (11) of a gearwheel (5) and assigning one of the gearwheel categories to the gearwheel (5) on the basis of the determined profile by the trained AI model.

A deterioration diagnosis apparatus is for a mechanical apparatus including a power transmission mechanism that transmits power via a gear. The deterioration diagnosis apparatus includes: a storing unit that stores, in advance, a trend of change along with the operation of the mechanical apparatus, in consumption rate of an additive contained in lubricant used for the gear; and a determination unit that determines the period to be taken for the consumption rate of the additive to reach a predetermined value, based on the trend of change in the consumption rate of the additive.

A method including the steps of providing a toothing having teeth with tooth flanks; measuring two or more teeth of the toothing, wherein the following steps are performed for each of the two or more teeth: measuring a segment of at least one tooth flank of the tooth, wherein the measuring is performed optically by an optical measuring device, extrapolating the measured segment to an extrapolated segment; and evaluating deviations of the extrapolated segments of the two or more teeth.

A drive includes an electric motor and a first gearbox that can be driven by the electric motor. An output shaft of the first gearbox is connected rotation-fast to a first shaft by a coupling, e.g., a rigid shaft coupling, and the first shaft is mounted by an axial bearing, e.g., a single axial bearing, that can be subjected to a force by at least one controllable first linear actuator.

A drive includes an electric motor and a first gearbox that can be driven by the electric motor. An output shaft of the first gearbox is connected rotation-fast to a first shaft by a coupling, e.g., a rigid shaft coupling, and the first shaft is mounted by an axial bearing, e.g., a single axial bearing, that can be subjected to a force by at least one controllable first linear actuator.

A device for testing a needle roller bearing of a planet gear set consists of two identical helical planet gear sets, a piston, an end cover, a spindle, and can simulate the actual operating condition of a needle roller bearing of the planet gear set; the rotating speed difference between an inner raceway and an outer raceway of the needle roller bearing is determined by adjusting the rotating speed of a sun gear and a planet carrier; the load on the needle roller bearing includes a centrifugal load and a radial load, and the centrifugal acceleration and the centrifugal load are determined by adjusting the rotating speed of the planet carrier; a method of determining the radial load by adjusting the hydraulic pressure difference of hydraulic chambers at both ends of the piston, generating a tangential force to load the planet gear, and balancing the radial load of the bearing.