A two-way planetary vehicle transfer mechanism with controllable transfer ramp spacing

Abstract

The invention discloses a bidirectional planet vehicle transfer mechanism with controllable transfer ramp spacing. The bidirectional planet vehicle transfer mechanism comprises unfolding guide wheelsand two ramps, wherein the two ramps are symmetrically arranged on the two transverse sides of a landing platform through the unfolding guide wheels, the transfer mechanism further comprises two spacing limiting modules, the two spacing limiting modules are arranged at the two longitudinal ends of the landing platform, the two ends of each spacing limiting module are correspondingly connected withthe ramps at the corresponding ends, and the spacing limiting modules are movably connected with the ramps. According to the bidirectional planet vehicle transfer mechanism, the direction, parallel to the longitudinal direction of the landing platform, of the spacing limiting modules is the X-direction, the direction, parallel to the transverse direction of the landing platform, of the spacing limiting modules is the Z-direction, the direction, perpendicular to the landing platform, of the spacing limiting modules is the Y-direction, and the movable connection limits each spacing limiting module to only have the rotation freedom degrees in the X-direction and the Y-direction so as to be used for adjusting the actual spacing between the unfolding ends of the two ramps to be the same as thetransverse spacing between the two ramps in the horizontal state in real time to avoid suspension of the ramps.

Description

technical field [0001] The invention relates to the technical field of spacecraft, in particular to a two-way planetary vehicle transfer mechanism with controllable distance between transfer ramps. Background technique [0002] In the planetary landing inspection mission, in order to make the planetary vehicle smoothly transfer to the surface of the planet after landing, the planetary vehicle generally needs to design a special transfer mechanism, which will be deployed to the surface of the planet after landing to form a transfer ramp for the safe transfer of the planetary vehicle. [0003] In 2013, China launched the Chang'e-3 probe and delivered the Yutu lunar rover to the moon. After the lander landed softly, the transfer mechanism was deployed, forming a one-way channel for the transfer of the lunar rover, and finally realized the smooth transfer of the lunar rover. For deep space exploration missions such as Mars, facing the unknown planetary environment, in order to ...

AI Technical Summary

Problems solved by technology

[0004] Due to the complexity of the planet's landing terrain, after landing, you will face slope terrain, ground pits or bulges, etc. After the transfer ramp is deployed, it is likely to fall on the slope / pits / protrusions, because the two ramps always have one end Mounted on the landing platform, there will be a space angle between the two transfer ramps, which will lead to a change in the lateral distance between the landing ends of the two ramps, causing a deviation between the travel path of the planetary vehicle and the transfer ramp during the transfer process. When the change value of the distance between the transfer ramps exceeds the adaptability of the planetary vehicle, it will bring many safety hazards: if the distance between the transfer ramps is too large, the planetary vehicle will be stuck on the ramp and cannot move forward; if the distance between the transfer ramps is too small, the planetary vehicle will overshoot. Overturning occurs when the transfer ramp is out of range, which will seriously threaten the safety of the transfer of the planetary vehicle

In this regard, it is required that the transfer ramp should have a strong ability to adapt to the terrain, so that the two transfer ramps can be smoothly deployed to the ground under conditions such as different planes, and the distance between the transfer ramps can be controlled. There are few studies on transfer ramp devices with controllable track spacing

Images