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A low-impact separation nut based on slow release of preload

A technology of separating nut and low impact, applied in mechanical equipment, fixtures, etc., can solve the problem of large impact of separating nut, and achieve the effect of prolonging release time and overcoming large impact response.

Active Publication Date: 2019-09-10
BEIJING INST OF ELECTRONICS SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, it is necessary to provide a high-reliability, fast-response, high-synchronization and low-impact separation nut to solve the problem of large shocks caused by the separation nut in the past

Method used

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  • A low-impact separation nut based on slow release of preload

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Embodiment 1

[0036] A low-impact separation nut based on slow release of pretightening force, the separation nut includes: a cover 2 and a housing 7; the lower surface of the housing 7 is provided with a hollow cylinder protruding inward;

[0037] The cover 2 is matched and fixed with the housing 7, and a cavity structure is formed between the cover 2 and the housing 7;

[0038] Inside the cavity structure are: bolts 1, stoppers 3, slow release rings 4, split nuts 5, hoops 6, pistons 8, piston discs 9 and retaining rings 10;

[0039] The center of the cover 2 is provided with a round hole, and the bolt 1 passes through the round hole in the center of the cover 2 and is matched and fixed with the split nut 5;

[0040] The stopper 3 is located between the lower surface of the cover 2 and the upper surface of the split nut 5;

[0041] The middle part of the upper surface of the split nut 5 is provided with a groove, and the slow release ring 4 is embedded in the groove of the split nut 5;

...

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Abstract

The invention discloses a low-impact separation nut based on pretightening force slow releasing. The low-impact separation nut is characterized in that the separation nut comprises a cover (2) and a shell (7); the lower surface of the shell (7) is provided with a hollow cylinder which inwards protrudes, and the cover (2) and the shell (7) are matched for fixing; and a cavity structure is formed between the cover (2) and the shell (7) and internally provided with a bolt (1), a check block (3), a slow releasing ring (4), a split nut (5), a hoop sleeve (6), a piston (8), a piston plate (9) and acheck ring (10). According to the low-impact separation nut, the slow releasing ring is additionally arranged, the releasing time of bolt pretightening force is prolonged, and impact response to adjacent mounting structures of the separation nut is reduced; and thus, through application of the slow releasing ring, under the precondition that the characteristics of high reliability, quick response,high synchronization and the like are not changed, the disadvantage that a traditional separation nut is large in impact response is overcome.

Description

technical field [0001] The invention relates to the field of low-impact separation nuts, in particular to a low-impact separation nut based on slow release of pretightening force. Background technique [0002] Split nuts are widely used in many fields, especially aerospace. In the early days of the aerospace field, the reliability of the separation was the first goal. If the separation nut failed to unlock, the entire mission would also face failure. With the improvement of the separation nut, the reliability problem has been gradually solved, and the focus has also shifted to reducing the shock response of the surrounding structure during separation. [0003] When the separation nut connects two objects, it is usually fixed or pressed on an object, and the bolt in it is screwed into the nut and tightened after passing through the two objects. The resulting axial preload is stored in the release nut. The sudden release of the energy stored in the preload upon separation r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B1/04
Inventor 洪青锋曹伟邢春英
Owner BEIJING INST OF ELECTRONICS SYST ENG
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