CN213008770U

CN213008770U - Air blowing pocket type secondary unfolding parachute

Info

Publication number: CN213008770U
Application number: CN202021921974.0U
Authority: CN
Inventors: 李轲
Original assignee: AVIC Aerospace Life Support Industries Ltd
Current assignee: AVIC Aerospace Life Support Industries Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-20
Anticipated expiration: 2030-09-04

Abstract

The utility model provides a blast air pocket type secondary expansion parachute, including release canopy, parachute cord, restraint canopy, restraint knot, constraint area, canopy base strapping, restraint knot lower extreme strapping and parachute. Sewing a binding buckle at the lower end close to the parachute-coat, binding two symmetrical adjacent parachute cords together in pairs, binding the two parachute cords by using the binding ropes at the upper end and the lower end of the parachute-cord binding buckle respectively, binding the parachutes in the middle of the two parachute cords simultaneously, folding the parachute-coat in the middle of the two parachute cords, taking the parachute-coat at the middle bottom edge to penetrate through the binding belts on the parachute-cord binding buckle, tightening and fixing the binding belts by using the binding belts, surrounding the whole parachute for one circle, inflating and fully opening the unconfined part of the parachute-coat in advance when the parachute is unfolded, gradually pulling out the constrained parachute-coat during relative airflow movement, pulling out the binding ropes between the two constrained parachute cords after all the constrained parachute-coats, fully inflating the whole parachute-coat, and starting the parachute.

Description

Air blowing pocket type secondary unfolding parachute

Technical Field

The utility model relates to a can the segmentation release parachute canopy aerify, reduce the parachute-opening impact force's a parachute, specifically be a blast air pocket formula secondary expansion parachute.

Background

The parachute gradually unfolding technology is a main means for reducing larger impact when the parachute is unfolded once, and the most used method at present is a method for removing the first-stage closing of the parachute by using a delay cutter, so that the parachute can be inflated secondarily after constraint is removed. However, this method has the following disadvantages: 1. the reliability of the time delay cutter is low, the time delay cutter has higher requirements on the use environment, and the altitude of use is not more than one kilometer; 2 the method can only carry out secondary inflation on the parachute at present, and the canopy inflation is carried out step by step for multiple times, so that the project is immature at present; the 3 time delay cutters are generally symmetrically arranged at the bottom edge of the canopy of the parachute, so that the reliability is improved, even if the time delay cutters can be used for carrying out multi-stage closing up on the parachute, each stage of time delay cutters are specially customized according to the system requirements, and a lot of processing cost can be increased.

Therefore, in order to solve the technical problem of huge impact overload caused by the full-area expansion of the parachute in the prior art, the problems of complex operation, great influence of the use environment, low reliability, high cost and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the blowing bag type secondary unfolding parachute is simple to operate and high in reliability, and can be unfolded in multiple stages to reduce huge impact overload caused by the fact that the parachute is unfolded in the whole area.

The technical scheme of the utility model is that: the utility model provides a blast air pocket formula secondary expansion parachute, includes release canopy, parachute cord, restraint canopy and parachute, the parachute cord has a plurality of roots, and every one end is connected with the parachute, and the other end links to each other with the article of certain quality for the free end constraint together, and every two adjacent parachute cords are close to parachute portion is tied up with the strapping rope, makes the parachute becomes the restraint canopy of release canopy and blast air pocket formula.

In the scheme, the free part at the bottom end of the constraint umbrella coat is constrained by the strapping rope to provide resistance for the expansion of the constraint umbrella coat.

In the scheme, restraint buckles are sewn among the parachute ropes of the parachute.

In the above scheme, the restraint buckle is in a ring shape, the opposite direction of the restraint buckle is provided with an end head, one end head is connected with the bottom edge of the parachute, and the other end head is connected with one end of the parachute rope.

In the scheme, two adjacent restraint buckles are bound together, the upper ends of the two restraint buckles are bound by the binding ropes at the bottom edges of the canopy, the lower ends of the two restraint buckles are bound by the binding ropes at the lower ends of the two restraint buckles, resistance is provided for unfolding the parachute, the binding ropes at the lower ends of the two restraint buckles are firstly broken in the unfolding process of the parachute, and then the binding ropes at the bottom edges of the canopy are broken.

In the above scheme, the restraint buckle is further provided with a restraint belt for restraining the end part of the restraint canopy.

The utility model has the advantages that: the parachute canopy is additionally provided with the restraint buckle at the joint of the parachute canopy and the parachute cords, the restraint buckle is connected with the restraint belt, the adjacent parachute cords are bound and fixed at the restraint buckle by the aid of the restraint ropes in the packaging process, the two adjacent parachute cords are restrained into one parachute cord, the parachute canopy in the middle of the two parachute cords is folded in half and then penetrates through the restraint belt on the restraint buckle along the middle bottom edge, the restrained area of the parachute canopy is approximately half of the whole area of the parachute canopy, and the parachute opening and load shedding method can enable the parachute canopy to be inflated and unfolded in a segmented mode in the parachute opening process and has a good effect on parachute opening and load shedding of the parachute.

The utility model provides a parachute full area expansion parachute-opening strike great problem, it is fixed to retrain parachute part canopy, releases other canopy step by step and aerifys until opening full, has further prolonged the inflation time of parachute, reduces the purpose of the huge impact force that once only instantaneous inflation brought.

Drawings

The invention is further described with reference to the following figures and examples.

Fig. 1 is a schematic view of the restraint of the parachute canopy of the utility model.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of the fully-unfolded canopy structure of the parachute of the present invention.

In the figure, 1-release canopy; 2-umbrella rope; 3-restraining the canopy; 4-a restraint buckle; 5-binding belt; 6-a binding rope at the bottom edge of the umbrella coat; 7-restraining a binding rope at the lower end of the buckle; 8-parachute

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

When the parachute cords of the parachute are processed, the restraint buckles are sewn close to the lower end of the canopy, before the parachute is packaged, two adjacent parachute cords with symmetry are drawn together in pairs, at the moment, the two parachute cords are used as one parachute cord, the two parachute cords are tied and restrained by using the tying ropes at the upper end and the lower end of the parachute cord restraint buckles respectively, meanwhile, the parachute in the middle of the two parachute cords is folded, the parachute in the middle of the middle bottom edge penetrates through the tying belts on the parachute cord restraint buckles, the tying belts are tightened and fixed to encircle the whole parachute, then the parachute is packaged, when the parachute is unfolded, the unconstrained part of the parachute canopy is inflated in advance to be fully inflated, the parachute is pulled out gradually from the restrained parachute in the relative air flow movement, after all the restraint parachutes are pulled out, the tying ropes between the two restrained parachute cords are pulled off, and the whole parachute is fully inflated, the parachute begins to work.

As shown in fig. 1 to 3, for the parachute restraint and the working diagram provided by the embodiment of the present invention, before the parachute 8 starts working, the adjacent parachute cords 2 are combined into one, that is, the number of the original parachute cords 2 is reduced by half theoretically, the restraint buckles 4 are sewn at the distance from the parachute-coat edges of the parachute cords 2, the parachute-coat base strapping cords 6 and the restraint-buckle lower-end strapping cords 7 are respectively strapped at the upper and lower ends of the restraint buckles 4, at this time, the part of the parachute-coat in the middle of the two groups of strapped parachute cords 2 is the release parachute-coat 1, the parachute-coat in the middle of the two groups of strapped parachute cords 2 is the restraint parachute-coat 3, the restraint parachute-coat 3 is folded and passes through the restraint belts 5 on the restraint buckles 4 on the parachute cords 2 from the base, the restraint belts 5 are tightened, and the preparation work of the parachute 8 is completed. When the parachute 8 starts to work, the release canopy 1 starts to inflate, then the restraint canopy 3 is struggled from the restraint belt 5 to inflate, the strapping ropes 6 at the bottom edge of the canopy are broken, then the strapping ropes 7 at the lower end of the restraint buckle are broken, the adjacent canopy ropes 2 are separated, the parachute inflates from the release canopy 1 to the restraint canopy 3, then the adjacent canopy ropes 2 are separated, the whole parachute 8 is inflated fully, and the parachute starts to work.

The utility model discloses only explain circular umbrella embodiment, have the parachute of symmetry performance to the polygon, all contain the utility model discloses in, and circular parachute can be seen as the polygon parachute that has unlimited limit.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a blast air pocket formula secondary expansion parachute, its characterized in that, this parachute is including release canopy (1), parachute cord (2), restraint canopy (3) and parachute (8), parachute cord (2) have many, and one end is connected with parachute (8), and the other end links to each other with the air-drop article for the free end constraint together, and every two adjacent parachute cords (2) are being close to parachute (8) portion is tied up with the strapping rope, makes parachute (8) form restraint canopy (3) that release canopy (1) and blast air pocket formula.

2. A blowing-pocket-type secondary deployment parachute according to claim 1, wherein the restraining canopy (3) is restrained by a strong binding rope when not deployed to provide resistance to its deployment.

3. A blowing-pocket-type secondary deployment parachute according to claim 1, wherein a binding buckle (4) is further sewn between the parachute (8) and the parachute cord (2).

4. A blowing pocket type secondary deployment parachute according to claim 3, wherein the binding buckle (4) is ring-shaped and has ends in opposite directions, one end of the end is connected with the bottom edge of the parachute (8), and the other end of the end is connected with one end of the parachute line (2).

5. A blast-pocket secondary deployment parachute according to claim 3, wherein the restraint buckles (4) are bound together at adjacent two ends, the upper ends of the two ends being bound by canopy base binding strings (6) and the lower ends of the two ends being bound by restraint buckle lower binding strings (7), and resistance is provided for the parachute to inflate and deploy, so that the parachute (8) is opened with the restraint buckle lower binding strings (7) broken first and then the canopy base binding strings (6) broken.

6. A blowing pocket type secondary deployment parachute according to claim 5, characterized in that the restraining buckle (4) is further provided with a restraining band (5) for restraining the bottom end free portion of the restraining canopy (3).