| 摘要 |
FIELD: electric engineering. SUBSTANCE: device is designed as joined electric motor, helical gear of rotation movement to reciprocal one, and folding sealed protecting helical housing. Nut 6 of helical gear has through axial channel 11. Hollow shaft 3 of electric motor also has axial through channels in its part which is adjacent to nut. It also has axial through channels in its parts which are on both sides of rotor. Said channels have reverse pneumatic valves 13, 14, 15, which are open inside electric motor. Bearing shield 5 on side of protecting housing also has axial through channels which have reverse pneumatic valves which are open in direction from electric motor to protecting housing. EFFECT: increased specific efficiency due to better airing. |
