초록 ▼

A shock absorbing overtravel stop apparatus which includes a rotatable drive shaft 10, a screw shaft 15 driven by the drive shaft 10, and a nonrotatable travelling nut 30 threaded on and moveable axially along the screw shaft 15. At one end 28 of the screw shaft 15, the apparatus is provided with a

A shock absorbing overtravel stop apparatus which includes a rotatable drive shaft 10, a screw shaft 15 driven by the drive shaft 10, and a nonrotatable travelling nut 30 threaded on and moveable axially along the screw shaft 15. At one end 28 of the screw shaft 15, the apparatus is provided with a rotating stop 38 and a stationery stop 40. At the other end 20 of the screw shaft 15, there is provided a bearing housing 21, journalling the screw shaft 15 for rotation and mounting the screw shaft for axial movement along the axis. The travelling nut 30 is moveable in one direction to engage the stops 38, 40 whereupon the rotary motion of the screw shaft 15 is terminated. The travelling nut 30 is also moveable in the other direction into contact with the bearing housing 21 to exert an axial force upon the screw shaft 15 such that the screw shaft 15 moves axially to engage the stops 38, 40 whereupon the rotary motion of the screw shaft 15 is terminated. The screw shaft 15 of the present invention acts as a torsion shock absorber upon the termination of the rotary motion of the screw shaft 15 by the stops 38, 40.

대표청구항 ▼

A shock absorbing overtravel stop apparatus for a rotating shaft, said apparatus comprising: a rotatable drive shaft having opposite ends and adapted to drive a load at one end and to be driven by a high inertia motor at the other end; a rotatable and axially moveable screw shaft having an axis and

A shock absorbing overtravel stop apparatus for a rotating shaft, said apparatus comprising: a rotatable drive shaft having opposite ends and adapted to drive a load at one end and to be driven by a high inertia motor at the other end; a rotatable and axially moveable screw shaft having an axis and opposite ends; means drivingly interconnecting said drive shaft and said screw shaft; a non-rotatable travelling nut threaded on and moveable axially along said screw shaft; and stop means at one end of said screw shaft for terminating the rotary motion of said screw shaft upon said travelling nut travelling to either end of said screw shaft.