A sewing structure for a deceleration umbrella umbrella bag

Abstract

The invention discloses a sewing structure for a brake parachute bag. The sewing structure comprises a peripheral cloth (1) and a bottom cloth (3), wherein the peripheral cloth (1) is in a cylindrical side surface form and is obtained by sewing two opposite edges of rectangular or square canvas to form a lock stitch and cut openings; the bottom cloth (3) is used for being matched with the peripheral cloth (1) to form a cylindrical bottom surface; the peripheral cloth (1) and the bottom cloth (3) are sewed; and the sewed region of the peripheral cloth (1) and the bottom cloth (3) is surrounded by a bottom circumferential reinforcing strip (5). The number of layers of the canvas at the critical sewed position, the overlap forms of various layer structures, arrangement of the reinforcing strip and the like are improved. Compared with the prior art, the problems that the number of layers of the sewing structure is overlarge, the sewing difficulty is large and the sewing quality is affected can be effectively solved; the problems of line breakage, line jumper, needle breakage and the like in the sewing process can be reduced by the sewing structure; and the sewing structure is high in sewing strength and good in stability.

Description

technical field [0001] The invention belongs to the technical field of parachutes, and more particularly relates to a sewing structure for a drogue parachute bag. Background technique [0002] The parachute supporting the aircraft is a kind of parachute. The supporting umbrella bag equipment is generally a barrel-shaped structure. The main parachute of the parachute is folded in an orderly manner and wrapped in it. It is placed in the parachute cabin of the aircraft during normal flight. When the aircraft lands and brakes, the main parachute breaks out from the umbrella bag and opens, generating air resistance and reducing the landing braking distance of the aircraft. The material selection of the deceleration umbrella umbrella bag has certain requirements, and the material is required to have certain anti-burning, anti-wear and strength properties. The main fabric material selected is canvas material. The thickness of this kind of main fabric material is relatively large, ...

AI Technical Summary

Problems solved by technology

Based on the above-mentioned material selection and certain sewing methods, the sewing structure has the characteristics of many layers of sewing and thick sewing structure at the junction of the width lock seam and the bottom overlapping seam, and it is appropriate to produce sutures during partial sewing Accumulation, even suture breakage, thread skipping or needle breakage during sewing, the suture is extremely difficult, which seriously affects the quality and production efficiency of the product, especially the large number of production packages and large batches of the product, which will affect to production delivery

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