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Sealed small low-impact release screw bolt

A technology of unlocking bolts and low impact is applied in the field of pyrotechnic connection and separation devices, which can solve the problems of weak sealing, large separation impact, unsatisfactory structural size and bearing capacity, etc., and achieves low impact, strong connection and good application prospects. Effect

Inactive Publication Date: 2010-11-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the existing pyrotechnic connection and separation device, on the one hand, the structural size and bearing capacity cannot meet the requirements; on the other hand, the sealing performance is weak, and the separation impact is large

Method used

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  • Sealed small low-impact release screw bolt
  • Sealed small low-impact release screw bolt
  • Sealed small low-impact release screw bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] (1) Select high-strength materials, and preliminarily design a pyrotechnic unlocking bolt separation device; on the premise of ensuring that the connection strength of a single device is above 12kN, based on the optimization design idea, the dimensions of each part are adjusted through the self-compiled Matlab program And the number is gradually optimized. According to the optimization results, three metal wedges distributed in the circumferential direction of 1200 are finally used as the connection mechanism between the outer cylinder and the inner cylinder, so that after the device is fully assembled, the total length is 52.5mm (excluding the electric initiator), and the maximum outer diameter is 16mm. Device miniaturization. (2) By embedding a double O-ring sealing baffle inside the device, before the device of the present invention is separated, the piston and the double O-ring sealing baffle contact and cooperate; after separation, the piston is separated from the ...

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PUM

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Abstract

The invention relates to a sealed small low-impact release screw bolt. The bolt comprises an inner cylinder (1), a shear pin (2), a wedge block (3), a piston (4), a sealing ring (5), a double O-shaped ring sealed baffle (6) and an outer cylinder (7). The bolt is characterized by small size, sealing type, low impact, strong connection and no pollution. Before separated, the two polars of the connected body form strong connection; and when separated, the two polars of the connected body can be safely and fast separated and generate low impact disturbance, thus the bolt is a pyrotechnic connection separating device with good comprehensive performance, and can be directly used in the stage separating systems of the missile and other spacecrafts, also provide beneficial reference for the design of the similar separating mechanism, have good application prospect.

Description

Technical field [0001] The invention relates to a miniaturized unlocking bolt with high sealing performance, which is a small size, strong connection, low impact and pollution-free pyrotechnic connection and separation device. Background technique [0002] The unlocking bolt plays a very critical role in the interstage separation system of missiles and other spacecraft, and its success or failure is directly related to the completion of the mission of the spacecraft flight. So far, the research and application of unlocking bolt separation devices are relatively mature, but there are few domestic researches on small-sized, sealed, low-impact unlocking bolt separation devices. [0003] With the gradual maturity of missiles and various spacecraft, the requirements for the separation system are getting higher and higher, and the demand for the development of the matching pyrotechnic separation device is becoming more and more urgent. For the existing pyrotechnic connection and ...

Claims

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Application Information

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IPC IPC(8): B64G1/64
Inventor 严楠叶耀坤张静伟毕文辉何春全杨立欣曾雅琴何爱军傅宏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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