CN115743558A - Stamping parafoil and delayed unfolding method - Google Patents

Abstract

A ram parafoil and a delayed unfolding method relate to the field of ram parafoils. Ram-press parafoil includes the parafoil body, the umbrella rope of parafoil body and fixed case is connected respectively at fixed case and many both ends, still include at least a pair of about rope of locating parafoil body both ends respectively and many powerful rope that break off when receiving the pulling force, two restraint air chambers bottom at parafoil body both ends are connected with a plurality of restraint guide rings respectively, the bottom of every pair of about rope is connected respectively in fixed case, the top of every pair of about rope passes a plurality of restraint guide rings that two restraint air chambers are connected from inside to outside in proper order respectively, every powerful rope is used for being fixed in two adjacent restraint guide rings that pass with a section lax about rope. The ram parafoil and the delayed unfolding method can delay the unfolding speed of the ram parafoil and enable the area of the ram parafoil to be gradually unfolded, so that parachute unfolding impact force is reduced, and material strength and use cost are reduced.

Description

Ram parafoil and delayed unfolding method

Technical Field

The application relates to the field of ram parafoil, in particular to a ram parafoil and a delayed unfolding method.

Background

The ram parafoil is an umbrella which is full of ram air inflation to form a wing shape, and is made of a material with micro air permeability, so that under the condition of high-speed parachute opening, although a two-stage parachute opening mode is generally adopted, the parachute opening speed of the ram parafoil is reduced to be below 40m/s by using the condition that a conventional parachute provides parachute with parachute opening, and the parachute opening impact of the ram parafoil is still higher than that of the conventional parachute by more than 50 percent even in the case that the ram parafoil needs to adopt a certain parachute opening control method to reduce the parachute opening impact force.

At present, the ram parafoil generally adopts a cloth sliding closing mode, although the structure is very simple, the working mechanism is very complex and is difficult to master, the optimal proportioning relation needs to be obtained through a large number of tests, and the ram parafoil has the defects of high cost and difficulty in operation in actual use.

Therefore, there is a need for a simple, simple and reliable device and method for reducing the parachute opening impact of a ram parafoil.

Disclosure of Invention

The application aims to provide a ram parafoil and a delayed unfolding method, which can delay the unfolding speed of the ram parafoil and gradually unfold the area of the ram parafoil, thereby reducing the parachute opening impact force and reducing the strength and use cost of used materials.

The embodiment of the application is realized as follows:

the embodiment of the application provides a punching press parafoil, including the parafoil body, the parachute cord of parafoil body and fixed case is connected respectively at fixed case and many both ends, still include at least a pair of about rope of locating parafoil body both ends respectively and many powerful ropes that break off when receiving the pulling force, two restraint air chamber bottoms at parafoil body both ends are connected with a plurality of restraint guide rings respectively, the bottom of every pair of about rope is connected respectively in fixed case, the top of every pair of about rope passes a plurality of restraint guide rings that two restraint air chambers are connected from inside to outside in proper order respectively, every powerful rope is used for being fixed in two adjacent restraint guide rings that pass with a section lax about rope.

In some optional embodiments, the two ends of the fixed box are respectively connected with an umbrella rope convergence part, the umbrella rope convergence part is respectively connected with each umbrella rope, a plurality of knurling wheels are sleeved on the umbrella rope convergence part, and each pair of constraint ropes respectively sequentially penetrates through a plurality of corresponding knurling wheels sleeved on the two umbrella rope convergence parts.

In some alternative embodiments, the lengths of the individual strength cords to which the restraining cords are attached gradually increase from the inside to the outside.

In some alternative embodiments, the loose restraining rope between two adjacent restraining guide rings is secured to the parafoil body by stitching.

In some optional embodiments, the fixed box is connected with a case limit ring, the bottom end of each pair of restraint ropes is connected with a fixed buckle, and the fixed buckle is sleeved on the case limit ring.

In some alternative embodiments, the bottom end of each pair of restraining ropes is provided with at least one fixed-force tearing part which is torn to be elongated when being stressed.

The application also provides a delayed unfolding method of the ram parafoil, which comprises the following steps:

when the parafoil body is unfolded, the middle air chamber in the middle is inflated, airflow flows to the two restraining air chambers at the two ends, and at least one pair of restraining ropes is tensioned;

in the process of inflating the two restraint air chambers, the restraint guide rings move in the direction away from each other and gradually break the strength ropes until the parafoil body is unfolded and full of the strength ropes.

The beneficial effect of this application is: the utility model provides a punching press parafoil includes the parafoil body, the umbrella rope of parafoil body and fixed case is connected respectively at fixed case and many both ends, still include at least a pair of about rope of locating parafoil body both ends respectively and many powerful rope that break off when receiving the pulling force, two restraint air chamber bottoms at parafoil body both ends are connected with a plurality of restraint guide rings respectively, the bottom of every to about rope is connected respectively in fixed case, the top of every to about rope passes a plurality of restraint guide rings that two restraint air chambers are connected from inside to outside in proper order respectively, every powerful rope is used for being fixed in two adjacent restraint guide rings that pass with one section lax about rope. The stamping parafoil and the delayed unfolding method can delay the unfolding speed of the stamping parafoil and enable the area of the stamping parafoil to be gradually unfolded, so that the parachute unfolding impact force is reduced, and the strength and the use cost of used materials are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a ram-type parafoil provided in an embodiment of the present application when the ram-type parafoil starts to unfold;

FIG. 2 is a schematic structural view of a ram parachute according to an embodiment of the present disclosure when the ram parachute is fully deployed;

FIG. 3 is a partial schematic structural view of a constraining air chamber when the ram-type parafoil starts to unfold according to the embodiment of the present application;

fig. 4 is a schematic view of a partial structure of a fixing box, a restraining rope, an umbrella rope converging portion and an umbrella rope of the ram parafoil according to the embodiment of the present application;

fig. 5 is a partial structural schematic view of the connection of a restraint rope and a fixing buckle of the ram-type parafoil provided by the embodiment of the application.

In the figure: 100. a parafoil body; 101. an intermediate air chamber; 102. a constraining gas chamber; 110. a fixed box; 120. an umbrella rope; 130. a restraining rope; 140. a strong rope; 150. a constraining guide ring; 160. an umbrella cord convergence section; 170. a knurling wheel; 180. a case limit ring; 190. a fixing buckle; 200. a tear-off part with constant force.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The characteristics and performance of the ram-type parafoil and the delayed unfolding method of the present application are described in further detail below with reference to examples.

As shown in fig. 1, 2, 3, 4, and 5, an embodiment of the present application provides a ram parafoil, which includes a parafoil body 100, a fixed box 110, and twelve parachute cords 120, where two ends of the fixed box 110 are respectively connected with parachute cord convergence portions 160, the two parachute cord convergence portions 160 are respectively connected with the parafoil body 100 through the parachute cords 120, the parafoil body 100 includes a middle air chamber 101 located in the middle and two constraining air chambers 102 located at two ends of the middle air chamber 101, the ram parafoil further includes a pair of constraining cords 130 symmetrically located at two ends of the parafoil body 100 and ten strong cords 140 broken when being pulled, the bottoms of the two constraining air chambers 102 at two ends of the parafoil body 100 are respectively connected with six constraining guide rings 150, the fixed box 110 is connected with a chassis limiting ring 180, the bottom end of each pair of constraining cords 130 is connected to a fixing buckle 190, the fixing buckle 190 is sleeved on the chassis limiting ring 180, each parachute cord convergence portion 160 is sleeved with five rolling wheels 170, each pair of constraining cords 130 sequentially penetrates through the corresponding to the two constraining ropes 160, the constraining wheels 170, and the constraining ropes 130 sequentially penetrate through the two constraining ropes 130, and the constraining ropes 130 are sequentially connected to the two constraining ropes 130, and the constraining ropes 130 are sequentially pass through the two constraining guide rings 130, and the two constraining rings 130; the bottom end of each pair of restraining ropes 130 is respectively provided with four constant force tearing parts 200 which are torn and extended when being stressed, and the constant force tearing parts 200 are formed by bending one end of each restraining rope 130 and adhering a round hair surface and a stabbed hair surface together.

The application also provides a delayed unfolding method of the ram parafoil, which comprises the following steps:

when the parafoil body 100 is unfolded, the middle air chamber 101 is inflated, and airflow flows to the two constraint air chambers 102 at the two ends to be unfolded;

in the process of inflating the two restraining air chambers 102, the restraining guide rings 150 move in the direction away from each other and gradually tighten the pair of restraining ropes 130, at the same time, five knurling wheels 170 respectively sleeved on the two umbrella rope converging portions 160 rub and buffer the stretched restraining ropes 130, and at the same time, the restraining guide rings 150 gradually break the strong ropes 140 when moving in the direction away from each other, stretch the restraining ropes 130 to tear open and stretch the fixed force tearing portions 200 connected to the bottoms of the restraining ropes 130, and simultaneously stretch and tear the stitches between the two adjacent restraining guide rings 150, which fix the loosened restraining ropes 130 on the parafoil body 100, until the parafoil body 100 is unfolded to fill the middle air chamber 101 and the restraining air chambers 102, and at the same time, the two restraining ropes 130 are in a slightly loosened state. The ram parafoil works normally.

The ram parafoil and the delayed unfolding method provided by the embodiment of the application have the advantages that a pair of restraining ropes 130 with two ends respectively connected with the parafoil body 100 and the fixed box 110 are arranged, the pair of restraining ropes 130 respectively sequentially penetrate through five corresponding knurling wheels 170 sleeved on two parachute rope converging parts 160, the top ends of the pair of restraining ropes 130 respectively sequentially penetrate through six restraining guide rings 150 connected with two restraining air chambers 102 from inside to outside, a section of loose restraining rope 130 is respectively fixed on two adjacent restraining guide rings 150, the inflatable unfolding speed of the restraining air chambers 102 is delayed by using the restraining ropes 130 so as to reduce the parachute unfolding impact force of the ram parafoil, the friction force of the broken powerful ropes 140 and the knurling wheels 170 sleeved on the restraining ropes 130 when stressed is further used for delaying the loose restraining ropes 130 to be tensioned so as to prolong the parachute unfolding time, the loose restraining ropes 130 between the two adjacent restraining guide rings 150 are fixed on the parafoil body 100 by using sutures, the constant-force tearing parts 200 which are extended when stressed are arranged at the bottom ends of the restraining ropes 130 so as to buffer the unfolding speed of the ram parafoil, and the unfolding cost of the ram parafoil is reduced, and the ram parafoil is obviously reduced.

In other alternative embodiments, the fixed-force tear portion 200 may also be formed by bending one end of the restraining cord 130 and adhering the ends together with an adhesive.

The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims (7)

1. The utility model provides a punching press parafoil, includes parafoil body, fixed case and many both ends and connects respectively the parafoil body with the umbrella rope of fixed case, its characterized in that still includes at least a pair of locating respectively about rope and the many powerful rope that break off when receiving the pulling force at parafoil body both ends, two restraint air chamber bottoms at parafoil body both ends are connected with a plurality of restraint guide rings respectively, and are every right about rope's bottom connect respectively in fixed case, every right about rope's top passes a plurality of restraint guide rings that two restraint air chambers are connected from inside to outside in proper order respectively, every powerful rope is used for one section lax about rope is fixed in two adjacent that pass restraint guide ring.

2. The ram parafoil according to claim 1, wherein two ends of said fixed box are respectively connected with parachute line convergence parts, said parachute line convergence parts are respectively connected with each of said parachute lines, said parachute line convergence parts are sleeved with a plurality of knurling wheels, each pair of said constraining ropes sequentially passes through a plurality of corresponding said knurling wheels sleeved on two of said parachute line convergence parts.

3. The ram parachute of claim 1, wherein the lengths of the respective strength cords to which the restraining cords are connected gradually increase from inside to outside.

4. The ram parafoil of claim 1, wherein the slack restraining cord between two adjacent restraining guide rings is secured to the parafoil body by stitching.

5. The ram parafoil of claim 1, wherein a case limiting ring is connected to the fixed case, the bottom end of each pair of restraining ropes is connected to a fixing buckle, and the fixing buckle is sleeved on the case limiting ring.

6. The ram parafoil of claim 1, wherein the bottom end of each pair of restraining cords is provided with at least one constant force tearing part which is torn to be elongated when being stressed.

7. The method for the delayed deployment of a ram-wing umbrella according to any one of claims 1 to 6, comprising the steps of:

when the parafoil body is unfolded, the middle air chamber in the middle is inflated, airflow flows to the two restraining air chambers at the two ends, and at least one pair of restraining ropes is tensioned;

in the process of inflating the two restraint air chambers, the restraint guide rings move towards the directions away from each other and gradually break the strong ropes until the parafoil body is unfolded and full of the strong ropes.

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