GEAR WHEEL Russian patent published in 2014 - IPC F16H55/12 

FIELD: building.

SUBSTANCE: gear wheel comprises a body (1), a gear rim with teeth (2) and a pair of annular end patch pieces fixed on the body and covering the teeth edges. The gear rim is made of separate teeth (2) that are not connected to the wheel body. Each tooth (2) is set in the patch pieces by means of an axis (8) so that it can be turned by the latter in the wheel rotation plane. The root of each tooth is made by two planes (13, 14) perpendicular to the tooth symmetry plane and distanced from each other by the tooth height. The planes are set between the side surfaces (11, 12) of the tooth and the plane of its symmetry. In the state of a tooth with no impact load applied one plane (13) rests against the wheel body (1) on the area made on the circular surface of the wheel body perpendicular to the tooth symmetry axis and equal in area to the tooth root projection on the body. The other plane (14) placed closer to the tooth tip rests against the body by a flexible gasket (16) equal in area to this plane and providing for turning of the tooth by its axis in case the nominal load value is exceeded by the value of the load affecting it.

EFFECT: improved gear wheel reliability.

3 dwg