Process for testing driving axles and device for performing the process
AssigneeGlyco-Antriebstechnik GmbH
InventorJoerg P. Damitz
Life of this patent
Estimating the term…
Abstract
A method of and apparatus for testing axles for motor vehicles and especially the drive axles for trucks, has a testing stand in which the axles are supported and connected to a drive motor and load. In addition to the driving forces which can thus be applied to the axle shaft, the axle housing can be loaded to represent truck loading and can be subjected to torsional stresses like those which are generated when the truck is inclined in driving. The shaft ends are laterally loaded as well to represent reaction forces from the wheel disks. The method and apparatus enable total testing of the functions of the axle under simultaneous drive and carrying conditions in a single operation on the stand.
Claims18
A method of testing driving axles for motor vehicles, comprising the steps of:
- mounting at least one driving axles in respective gear units at opposite ends in a test stand so that said axle has opposite axle shaft ends at said gear units and an axle housing extending between said units and supported on said stand;
- connecting a drive motor to one of said ends through one of said units and a load to the other of said ends through another of said units for driving said axle while loading same;
- and
- applying to said axle on said test stand a plurality of other forces independent of forces applied by said drive motor and load and sufficient to enable testing of total function of the axle under simultaneous drive and carrying conditions, the application of said other forces including application to said shaft ends of dynamic lateral forces corresponding to wheel-disk reaction forces applicable to the axle in use.
A method of testing driving axles for motor vehicles, comprising the steps of:
- mounting at least one driving axles in respective gear units at opposite ends in a test stand so that said axle has opposite axle shaft ends at said gear units and an axle housing extending between said units and supported on said stand;
- connecting a drive motor to one of said ends through one of said units and a load to the other of said ends through another of said units for driving said axle while loading same, and mechanically coupling said drive motor to said load to form with said axle a closed transmission circuit loading said axle by tensioning across said opposite ends;
- and
- applying to said axle on said test stand a plurality of other forces indpendent of forces applied by said drive motor and load and sufficient to enable testing of total function of the axle under simultaneous drive and carrying conditions.
The method defined in claim 8 wherein said application of other forces includes application to said axles of a predetermined static force and, in addition to said predetermined statis force an additional load selectable as to magnitude and frequency.
An apparatus for testing driving axles for motor vehicles, comprising:
- a test stand having a base and a pair of gear units spaced apart on said base;
- means for mounting at least one driving axle in said gear units at opposite ends so that said axle has opposite axle shaft ends at said gear units and an axle housing extending between said units;
- a drive motor connected to one of said gear units and to one of said ends through said one of said units and means for connecting a load to the other of said ends through another of said units for driving said axle while loading same;
- and
- means on said stand engageable with said housing and with said shaft ends for applying to said axle on said test stand a plurality of other forces independent of forces applied by said drive motor and load and sufficient to enable testing of total function of the axle under simultaneous drive and carrying conditions, said means for applying said other forces including means for application to said shaft ends of dynamic lateral forces corresponding to wheel-disk reaction forces applicable to the axle in use.
Dependencies are inferred from the claim text.