DEVICE FOR LANDING GEAR UNLOCKING IN EXTENDED POSITION AND LANDING GEAR EQUIPPED WITH SUCH DEVICE Russian patent published in 2014 - IPC B64C25/26 B64C25/10 

FIELD: transport.

SUBSTANCE: aircraft (AC) landing gear contains leg pivotally mounted on AC, capable to rotate around retraction axis. The leg can be stabilised in extended position by means of brace containing two pivotally interconnected connecting rods and can be held in aligned position by stabilising element containing two pivotally interconnected links. One of the links is pivotally connected with brace, and the second link is pivotally connected with landing gear leg or with AC. The links are held in their aligned and locked position. The landing gear contains unlocking device. The unlocking device contains rotary drive, crank lever, lever pivotally mounted on the crank lever end and comprising recess, pin, returning device pressing lever to the pin. Drive axis is parallel to pivot of stabilising element links. The crank lever is connected with rotary drive shaft. The pin is rigidly fixed to one of stabilising element links and protrudes from this link. The crank lever is made capable to be shifted from the first angular position where the pin contacts with the lever being opposite the recess when links are in aligned position, to the second angular position to which the lever comes when lever recess thrusts away the pin thus bringing the stabilising element links out of aligned position.

EFFECT: simplicity and reliability of unlocking device using for its operation simple electric driving mechanism.

4 cl, 17 dwg