Retractable landing gear
阅读：75发布：2024-01-10
专利汇可以提供Retractable landing gear专利检索，专利查询，专利分析的服务。并且The landing gear comprises a retractable strut and at least one movable element borne by the strut and is capable of undergoing a movement of retraction which brings it close to the lifting axle of the strut in the course of retracting the said strut. A compensating mechanism is interposed between a zone of the main linkage and the auxiliary brace. The landing gear is suitable for aircraft of a certain weight.，下面是Retractable landing gear专利的具体信息内容。
1. In an aircraft undercarriage a liftable landing gear comprising a strut and at least one wheel assembly borne by said strut and adapted to undergo relative movement with respect to the strut in the course of its lifting, said landing gear being connected to the aircraft by: a principal brace comprising a cross-piece supported by at least two pivots, said cross-piece being connected to the strut and defining a lifting axis for said strut, and an auxiliary linkage comprising a mechanical linkage arranged to effect said relative movement of the wheel assembly in the course of its lifting, said landing gear including a strain-compensating mechanism comprising the elements: a compensating lever mounted pivotably at is middle point on the cross-piece, an equalizing lever mounted pivotably on a fixed structure of the aircraft, an upper tie-rod articulated on the fixed structure of the aircraft and on one of the ends of the compensating lever, a lower tie-rod articulated on the equalizing lever and on the other end of the compensating lever, and an elastic tie-rod mounted between the fixed structure of the aircraft and one of said compensating lever, equalizing lever, upper tie-rod or lower tie-rod, the end of said mechanical linkage being attached to one of said compensating lever, equalizing lever, upper tie-rod or lower tie-rod, the strains occurring in said principal brace and transmitted to the auxiliary linkage being compensated as a result of the relative size and position of said elements.
1. In an aircraft undercarriage a liftable landing gear comprising a strut and at least one wheel assembly borne by said strut and adapted to undergo relative movement with respect to the strut in the course of its lifting, said landing gear being connected to the aircraft by: a principal brace comprising a cross-piece supported by at least two pivots, said cross-piece being connected to the strut and defining a lifting axis for said strut, and an auxiliary linkage comprising a mechanical linkage arranged to effect said relative movement of the wheel assembly in the course of its lifting, said landing gear including a strain-compensating mechanism comprising the elements: a compensating lever mounted pivotably at is middle point on the cross-piece, an equalizing lever mounted pivotably on a fixed structure of the aircraft, an upper tie-rod articulated on the fixed structure of the aircraft and on one of the ends of the compensating lever, a lower tie-rod articulated on the equalizing lever and on the other end of the compensating lever, and an elastic tie-rod mounted between the fixed structure of the aircraft and one of said compensating lever, equalizing lever, upper tie-rod or lower tie-rod, the end of said mechanical linkage being attached to one of said compensating lever, equalizing lever, upper tie-rod or lower tie-rod, the strains occurring in said principal brace and transmitted to the auxiliary linkage being compensated as a result of the relative size and position of said elements.
2. Landing gear according to claim 1, wherein the elastic tie-rod is mounted between the fixed structure of the aircraft and one of the ends of a bent lever of which the middle point is hinged on the free end of the equalizing lever, the other end of this bent lever being connected to one end of a connecting rod, the other end of which is connected to said end of the mechanical linkage.
3. Landing gear according to claim 2, wherein the bent lever has a large arm and a small arm.
4. Landing gear according to claim 1 wherein the equalizing lever is mounted on the fixed structure of the aircraft through a Cardan joint.
5. Landing gear according to claim 1 wherein one of said compensating lever, equalizing lever, upper tie-rod and lower tie-rod is connected to the cross-piece by a wind bracing tie-rod.
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