Reusable variable-angle variable-length adaptive buffer landing mechanism

Abstract

The invention discloses a reusable angle-changing length-changing self-adaptation buffering landing mechanism. The reusable angle-changing length-changing self-adaptation buffering landing mechanism comprises a landing leg, a ball hinge, a power device and a swing driving mechanism body which is matched with the power device to drive the landing leg to swing relative to the center of the ball hinge so as to change the angle; the landing leg comprises a leg main body and a rotary type magneto-rheological damper, and the leg main body comprises a main cylinder tube and a lead screw rod, wherein the main cylinder tube is matched with the ball hinge in the mode that the main cylinder tube can rotate around the axis of the main cylinder tube, the lead screw rod is sleeved with the main cylinder tube, the lead screw rod and the main cylinder tube form a lead screw nut pair so as to be used for changing the length, and the upper end of the main cylinder tube is in transmission connection with the rotary type magneto-rheological damper; the swing driving mechanism body comprises an arc-shaped tooth frame fixedly arranged on a lander and a swing driving tooth matched with the arc-shaped tooth frame in an engaged mode and driven to rotate by the power device; and according to the reusable angle-changing length-changing self-adaptation buffering landing mechanism, multi-aspect factors such as the buffering effect, the structural weight and reusability are balanced, and the reusable angle-changing length-changing self-adaptation buffering landing mechanism is greatly suitable for a reusable carrying device.

Description

technical field [0001] The invention relates to the field of aerospace, in particular to a reusable variable-angle and variable-length self-adaptive buffer landing mechanism. Background technique [0002] At present, the cushioning methods of cushioning landing legs used in the aerospace field include hydraulic cushioning, cellular material crushing deformation cushioning, metal deformation cushioning, magnetorheological fluid cushioning and solid spring cushioning. The hydraulic buffer method is suitable for the case of small impact load, and when the impact load is large, the volume and weight of the buffer are relatively large. The crush deformation buffer of cellular materials mainly adopts aluminum honeycomb structure or honeycomb structure filled with foamed aluminum material as the buffer material, and its buffer force has a longer "platform" characteristic, but the honeycomb cannot recover after deformation. The metal deformation buffering method cannot meet the req...

AI Technical Summary

Problems solved by technology

The metal deformation buffer method cannot meet the requirements of repeated use

The magnetorheological fluid buffer method is still in the development stage in the aerospace field, and the technology is not mature enough

The solid spring buffer method will make the mechanism heavy and easily cause the carrier to rebound

These buffering methods have their own advantages and limitations. There is no aerospace buffer landing mechanism that can comprehensively reflect the advantages of the above buffering methods in the prior art, and it cannot make the buffering effect, structural weight, reusability, etc. factors are weighed

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