An unlocking and separating device based on a split nut
A technology of split nut and separation device, which is applied in the field of aerospace to achieve the effect of short stroke, small impact and small impact force
Active Publication Date: 2022-04-08
SOUTHEAST UNIV
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Problems solved by technology
Such devices can significantly reduce the impact force during unlocking, but there will still be a longitudinal impact force
Method used
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[0029] The technical solutions in the embodiments of the present invention will be described more clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0030] In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" are used ", "inner layer", "outer layer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, r...
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The invention provides an unlocking and separating device based on a split nut, which includes a housing with an open end, an end cover, a locking mechanism, a split nut and an unlocking mechanism, and the locking mechanism, the split nut and the unlocking mechanism are all arranged in the housing There are at least two split nuts, and bolt holes coaxial with the shell are formed between the split nuts; the locking mechanism is used to drive the split nuts to move radially along the bolt holes so that the diameter of the bolt holes is reduced; the unlocking mechanism It is used to drive the split nut to move radially along the bolt hole to increase the diameter of the bolt hole; the end cover is provided with a first through hole, and the end cover is arranged at the opening end of the shell, and the first through hole is coaxial with the bolt hole . The unlocking and separation device of the present invention uses the aggregation and separation of the split nuts to realize the connection and release of the bolt rod. The split nuts move radially in the bolt hole and have a short stroke, so that no axial impact force is formed and the impact force on the instrument connected to it is not formed. Small, safe and reliable.
Description
technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to an unlocking and separating device based on a split nut, which can be used for connection and separation of separation mechanisms on satellites or rockets. Background technique [0002] The separation mechanisms commonly used on satellites and rockets usually use pyrotechnic unlocking devices or non-pyrotechnic unlocking devices; pyrotechnic unlocking devices are usually suitable for the separation of large satellites. When unlocking, the gunpowder in the powder chamber needs to be ignited, and the satellite and rocket are realized by blowing off the bolts. unlocked. The advantage of this unlocking method is that the locking force is large, but there is a problem that the impact force is too large and difficult to control during the unlocking process. Usually, the impact force can reach 4000g or even higher. However, satellites usually carry sophisticated instrume...
Claims
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IPC IPC(8): B64G1/64
CPCB64G1/645
Inventor 孙蓓蓓刘彦豪王萌
Owner SOUTHEAST UNIV