A positioning and locking device for replaceable electronic equipment outside the cabin

Abstract

The invention discloses a positioning and locking device for replaceable electronic equipment outside the cabin, which comprises a replaceable electronic equipment body outside the cabin and a mounting bracket for the deck; the mounting bracket for the deck is fixed on the outer wall of the spacecraft; the body of the replaceable electronic equipment outside the cabin There are lugs on both sides of the side; the body of the replaceable electronic equipment outside the cabin is provided with a first positioning mechanism and a second positioning mechanism; the first positioning mechanism includes a first positioning hole set on the lug and a hole set on the mounting bracket The first positioning pin, the first positioning pin is a coarse and fine two-stage positioning pin; it is also provided with at least one holding mechanism, and the holding mechanism includes a reed on the lug, a reed bracket and a reed on the deck mounting bracket. Holding pin; thus, the positioning and locking device of the external replaceable electronic device of the present invention realizes rapid positioning and fixing of the body of the external replaceable electronic device, frees the hands of the astronauts, and improves the work efficiency of the astronauts. The invention also discloses a method for astronauts to replace equipment outside the cabin.

Description

technical field [0001] The invention relates to the field of maintenance outside the cabin, in particular to a positioning and locking device for replaceable electronic equipment outside the cabin. Background technique [0002] With the rapid development of space technology, the pace of human development and utilization of space is getting faster and faster, and space systems are becoming more and more complex and larger in scale. Due to the characteristics of high cost, high risk, and weight limitation of space missions, once it fails to enter orbit or a serious failure occurs after orbit, it will cause huge losses. The design life of my country's space station is 15 years, and on-orbit maintenance is a necessary means to realize the long life of the space station and further extend its life. The basic strategy of on-orbit maintenance is to replace the faulty equipment on-orbit, that is: find the faulty device, switch the function of the faulty device to the backup device,...

AI Technical Summary

Problems solved by technology

After the astronauts leave the cabin, they first need to remove the old equipment, insert new equipment, and remove and install multiple screws. This may be very easy and simple for ground operators, but as an astronaut, it seems to be very simple. The operation is actually very difficult: first, considering that the astronauts need to wear heavy spacesuits to operate, the field of vision is limited, the range of motion of the hands and limb joints is greatly restricted, and they are in a state of weightlessness, it is very difficult to replace the equipment. Difficulty; secondly, because the temperature of spacecraft equipment can reach 100 degrees Celsius when it is irradiated by the sun in space, and the temperature can reach minus 100 degrees Celsius when the sun is not shining. If there is no temperature control, the general equipment will not work normally. , so it is necessary to design a heat shield outside the electronic equipment outside the cabin; the heat shield is usually designed by wrapping up to a dozen layers of heat insulation materials, and the extravehicular equipment wrapped in the heat shield is bloated, which further affects the safety of astronauts. The operation makes it more difficult for the astronauts to perform extravehicular replacement; the third is that the spacecraft is in space, and the equipment is in a state of weightlessness. When the astronauts perform equipment maintenance and replacement, the astronauts actually only have one hand to hold the equipment to be replaced. The other hand needs to hold the cabin wall to prevent it from drifting away, which is even more difficult in the case of the already extremely restricted movement; the fourth is limited by the life maintenance resources carried by the space suit, the duration of the astronaut after leaving the cabin It is very limited, only about 1.5 hours. Therefore, it is an urgent technical problem to realize the fast positioning and locking of the body of the replaceable electronic equipment outside the cabin, and fast installation.

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