HATCH COVER OPENER Russian patent published in 2011 - IPC B64G1/22 

FIELD: transport.

SUBSTANCE: invention relates to airspace engineering, namely, to airlocks. Hatch cover opener comprises cover-to-hatch suspension arranged on cover turn axle, cover turn mechanism with cover drive, rockers and tie rod, and sealing mechanism. Tie rod represents tube to joint at least three rockers together. Two of said rockers are arranged on tube edges to interact with cover by spherical bearings fitted in rocker grooves. Bearings run in axles fitted on cover boss bores rigidly fixed in said bosses. Third rocket interacts with cover via compression spring. One end of said spring thrusts against rocker annular ledge, while another end rests on bottom of cup said spring is arranged in. Said cup is arranged with clearance between cup edge and third rocker surface. Tube is fitted in bracket bearings located on tube ends. Tube interacts with drive arranged on one of said brackets via toothed coupling fitted in tube in symmetry about plane running through spring axis perpendicular to tube axis. Tube interacts also with contact device fitted on another bracket rigidly jointed with first bracket via power element.

EFFECT: higher reliability, reduced weight and sizes.

2 dwg