초록 ▼

A gripping and locking arrangement for an aircraft movable component such as a flap door or undercarriage comprises a piston and a piston rod operative as a means for sensing a closing movement of the flap door or undercarriage, and also operative automatically actively to pull same by means of a cl

A gripping and locking arrangement for an aircraft movable component such as a flap door or undercarriage comprises a piston and a piston rod operative as a means for sensing a closing movement of the flap door or undercarriage, and also operative automatically actively to pull same by means of a closing hook into a position in which it is to be locked. The arrangement includes a locking member displaceable within the piston to move lock elements into a locking position and to hold them in the locking position until the arrangement receives a hydraulic pressure signal for causing lowering of the flap door or undercarriage, and the locking member is then displaced whereby the lock elements move into a release position. The hydraulic oil pressure can then act on the piston to produce displacement thereof into a position in which the closing hook releases the flap door or undercarriage component.

대표청구항 ▼

A catch arrangement for gripping and locking an aircraft movable component comprising: a cylinder; a piston slidably displaceable in said cylinder and movable within said cylinder between upper, middle and lower positions; a piston rod connected to said piston; a closing hook linked to said piston r

A catch arrangement for gripping and locking an aircraft movable component comprising: a cylinder; a piston slidably displaceable in said cylinder and movable within said cylinder between upper, middle and lower positions; a piston rod connected to said piston; a closing hook linked to said piston rod and movable thereby between a lower position and an upper position; a piston-like locking member slidably disposed within said piston and providing a retraction space; a locking space provided in said cylinder; lock element means carried by said piston and displaceable between a position of being retracted into said retraction space in said locking member and a locking position of being received in said locking space in said cylinder, said lock element means being in said locking position when said piston is in its upper position; and oil duct means including a first control passage for raising said piston and a second control passage for lowering said piston, the arrangement being such when said piston occupies its lower position said closing hook is in a position to be operatively encountered by said aircraft movable component as it moves upwardly whereby said piston can be moved upwardly into its middle position in which said first control passage is adapted to have pressurized oil acting on said piston to urge it towards its upper position in which said locking member is operative to urge said lock element means into said locking position thereof, thereby to provide a secure connection between said piston and said cylinder, and when said piston is in said upper position and said second control passage is addressed, said locking member and said piston are acted upon by oil pressure and said lock element means is movable into its retracted position whereby said piston is released from said cylinder for movement in a downward direction.