Space follow-up device

The utility model discloses a space follow-up device which relates to equipment for performing a flight test on a flying vehicle in a microgravity environment, and aims to provide a space follow-up device simulating the microgravity environment for performing the flight test on the flying vehicle. The space follow-up device comprises two vertical brackets (37) and a horizontal bracket (38) which is fixed on the two vertical brackets and is provided with two second track beams (14), a high-speed and heavy-duty driving gear synchrodrive system is arranged above the second track beams, a vertical follow-up system is arranged above the high-speed and heavy-duty driving gear synchrodrive system and is provided with a space floating fast follow-up device through vertical pulling ropes (39) in a suspending mode, a space follow-up constant-tension and micro-control system and a target flying vehicle (40) are sequentially arranged below the space floating fast follow-up device, and the space floating fast follow-up de