WORM ROLLER GEAR WITH TWO-ROLLER TEETH (VERSIONS) Russian patent published in 2013 - IPC F16H55/22 F16H1/16 

FIELD: machine building.

SUBSTANCE: worm roller gear includes worm (1) and worm wheel (2), into which screw rods (3) are screwed. Ball bearings (4, 5) are put on each rod. Each tooth of worm wheel is made in the form of two rollers installed by means of two stop rings (8, 9) on two coaxially installed ball bearings (4, 5). As per the second version, each tooth of worm wheel is made in the form of two coaxially installed roller bearings. Rollers or roller bearings are rolled along separated screw surfaces located on opposite walls of a screw channel of globoidal worm (1). A generatrix of worm screw channel profile is represented with a broken line.

EFFECT: invention allows increasing maximum allowable load moment on worm wheel shaft with roller teeth in combination with free-of-play coupling.

8 cl, 3 dwg