CN115959294A - Automatic telescopic inflation and deflation type flying wing umbrella - Google Patents

Abstract

The invention provides an automatic telescopic inflation and deflation type flying parafoil, which is additionally provided with an inflation and deflation type air bag on the basis of the parafoil, so that the parafoil can still keep the pneumatic appearance under the conditions of crosswind, wind pocket or no wind and the like, and the parafoil can be contracted under the condition of strong wind to reduce the wind force action area of the parafoil, thereby reducing the resistance formed by wind force. The method comprises the following steps: the parachute comprises a load cabin, a hauling rope connected with the load cabin and a parafoil body connected with the load cabin through a plurality of parafoil ropes; the automatic telescopic mechanism is also included; the parafoil body comprises an canopy and a plurality of inflatable air bags; the air bag is connected with the umbrella coat; the automatic telescopic mechanism is used for driving the longitudinal two ends of the parafoil body to stretch so as to adjust the wingspan area.

Description

Automatic telescopic inflation and deflation type flying wing umbrella

Technical Field

The invention relates to a flying parafoil, in particular to an automatic-stretching inflation and deflation flying parafoil.

Background

When the conventional flying parafoil encounters crosswind or wind-holding, the aerodynamic shape (namely collapse) of the parafoil which cannot meet the flying or air-stagnation state is easily caused, so that the parafoil is unstable and falls down, and the use safety of the parafoil is influenced.

In addition, the conventional parafoil does not have an automatic telescopic function, namely an automatic wingspan area adjusting function, has poor environmental adaptability, and is easy to damage the parafoil or a hauling rope under the condition of high wind.

Disclosure of Invention

In view of this, the invention provides an auto-retractable inflation/deflation type flying parafoil, which is added with an inflation/deflation type airbag on the basis of the parafoil, so as to ensure that the parafoil can still maintain the aerodynamic shape under the conditions of crosswind, wind catching or no wind, and under the condition of strong wind, the wingspan area can be changed by retracting the parafoil, the wind force action area of the parafoil is reduced, and the resistance formed by wind force is reduced.

The automatic telescopic inflation and deflation type flying parafoil comprises: the parachute comprises a load cabin, a hauling rope connected with the load cabin and a parafoil body connected with the load cabin through a plurality of parafoil ropes; it is characterized in that the preparation method is characterized in that,

the automatic telescopic mechanism is also included; the parafoil body comprises a canopy and a plurality of inflation and deflation airbags;

the air bag is connected with the umbrella coat;

the automatic telescopic mechanism is used for driving the longitudinal two ends of the parafoil body to stretch so as to adjust the wingspan area.

As a preferable mode of the present invention, when the canopy is a canopy of a ram parafoil, an air bag is placed in one or more air chambers of the ram parafoil, and the air bag is fixed inside the air chamber and connected to the canopy forming the corresponding air chamber; the air bag is provided with an independent inflation valve and an independent deflation valve and is used for rapid inflation and deflation of the air bag.

In a preferred aspect of the present invention, the automatic retracting mechanism is provided in an air chamber in the middle of the parafoil body, and an air bag is provided in at least the air chamber in the middle.

As a preferable mode of the present invention, the airbag is a double-layer or triple-layer folded airbag;

when the double-layer folding air bag is adopted, the double-layer folding air bag comprises two air bag sections which are connected through a flexible folding surface, wherein one air bag section is positioned in the air chamber, and the other air bag section is folded to the upper part or the lower part of the air chamber;

when the three-layer folding air bag is adopted, the three-layer folding air bag comprises three air bag sections which are sequentially connected through a flexible folding surface, wherein one air bag section is positioned in the air chamber, and the other two air bag sections are respectively folded to the upper part and the lower part of the air chamber.

As a preferable mode of the present invention, when the canopy is a canopy of a single-wing umbrella, an air bag row formed by a plurality of air bags sequentially connected in the longitudinal direction is directly provided above or/and below the canopy according to the aerodynamic shape of the single-wing canopy, and each air bag is connected with the canopy at a corresponding position;

a longitudinal inflatable belt is arranged on one transverse side of the airbag row, and an inflation valve is arranged on the inflatable belt corresponding to each airbag and used for rapidly inflating the airbags; in addition, each air bag is provided with an air release valve;

the automatic telescopic mechanism is arranged in the middle of the air bag row.

In a preferred mode of the invention, a flexible reinforced isolation belt is arranged between every two adjacent airbags.

In a preferred aspect of the present invention, the automatic retracting mechanism includes: the electric reel mechanism, the traction extension recovery cable and the traction extension air release valve;

the automatic telescopic mechanism is arranged in the middle of the parafoil body, one ends of the two traction, extension and recovery cables are fixed and wound on the electric reel mechanism, the other ends of the two traction, extension and recovery cables extend to the left side and the right side of the parafoil body respectively, sequentially penetrate through traction, extension and recovery air release valves in the middle of each air bag at the corresponding side and then are connected with the parafoil body at the most end part of the side;

the traction expansion deflation valve is used for plugging or opening a deflation hole on the air bag, and the traction expansion recovery cable is provided with a trigger piece corresponding to each traction expansion deflation valve;

when the electric reel mechanism recovers, draws and extends the recovery cable, and the trigger part moves to the position of the corresponding drawing telescopic deflation valve, the drawing telescopic deflation valve is triggered to open to realize deflation of the air bag, so as to realize retraction of the parafoil body at the position of the air bag; when the trigger piece leaves the traction telescopic deflation valve, the traction telescopic deflation valve is automatically closed to plug the deflation hole.

In a preferred aspect of the present invention, the electric reel mechanism includes: the two rope winding units are respectively used for driving the parafoil bodies positioned on the left side and the right side of the automatic telescopic mechanism to stretch;

the rope winding unit includes: the rope winding device comprises a fixed concave wheel, a sliding cam, a rope winding motor, a rope winding disc and a rope winding disc shaft;

the power output end of the rope winding motor is coaxially and fixedly connected with the fixed concave wheel; the rope coiling disc shaft is used for coaxially and fixedly connecting the sliding cam and the rope coiling disc through a spline; the end surface of the sliding cam with convex teeth is coaxially opposite to the end surface of the fixed concave wheel with concave teeth; the traction extension recovery rope is wound on the rope coiling disc;

the clutch unit is used for connecting or disconnecting the sliding cam and the fixed concave wheel in the two rope winding units; the clutch unit comprises a clutch and a sliding cam shifting fork translation rod; the shifting rod of the sliding cam shifting fork is connected with the clutch, and the other end of the shifting rod of the sliding cam shifting fork is respectively matched with the sliding cams of the two rope coiling units and used for driving the two sliding cams to move synchronously, so that the sliding cams in the two rope coiling units are synchronously combined with or separated from the fixed concave wheel.

As a preferable aspect of the present invention, the traction extension purge valve includes: the air release valve comprises a release valve body A, a movable sealing valve core A and a compression spring A;

the deflation valve body A is of a hollow cylindrical structure and is coaxially arranged in the traction extension and recovery cable hole, and the deflation valve body A avoids the deflation hole on the air bag; a compression spring A and a movable sealing valve core A are coaxially arranged in the air release valve body A, and the movable sealing valve core A is in sliding fit with the air release valve body A; one end of the compression spring A is abutted against the movable sealing valve core A, the other end of the compression spring A is abutted against the inner bottom surface of the air release valve body A, and the end part of the movable sealing valve core A is limited by a limiting ring arranged at the end part of the air release valve body A; initially, under the action of the pre-tightening force of the compression spring A, the movable sealing valve core A blocks the air vent;

a rope bead is arranged on the traction extension recovery rope corresponding to each traction extension air release valve and serves as a trigger piece, and the rope beads are used for pushing the movable sealing valve core A inwards to enable the movable sealing valve core A to move inwards to open the air hole when the traction extension recovery rope is recovered;

the diameter of the cable bead is larger than the inner diameter of the movable sealing valve core A, the diameter of the cable bead, which is arranged on the traction extension and recovery cable and corresponds to each traction telescopic deflation valve, is sequentially reduced from outside to inside along the longitudinal direction of the parafoil body, and correspondingly, the inner diameter of each movable sealing valve core A in the traction telescopic deflation valve is also sequentially reduced from outside to inside; it is ensured that each cable bead can and only can pass through all air bags outside its corresponding air bag.

As a preferable mode of the present invention, the traction extension deflation valve comprises two valve bodies arranged oppositely, each valve body comprises: the air release valve comprises a release valve body B, a movable sealing valve core B, a valve core sealing cover and a compression spring B;

the air release valve body B is of a hollow cylindrical structure and is arranged in the traction, extension and recovery cable hole, a movable sealing valve core B is coaxially arranged in the air release valve body B and can move along the axis of the movable sealing valve core B, and a valve core sealing cover for sealing the air release hole is arranged at the end part of the movable sealing valve core B, which extends out of the air release valve body B; the compression spring B is coaxially sleeved outside the movable sealing valve core B, one end of the compression spring B is abutted against the inner bottom surface of the air release valve body B, and the other end of the compression spring B is connected with the valve core sealing cover; initially, under the action of the pretightening force of the compression spring B, the valve core sealing cover blocks the air vent;

the ends of the two movable sealing valve cores B are opposite; a cable bead is arranged on the traction extension recovery cable corresponding to each traction extension air release valve to serve as a trigger piece, when the traction extension recovery cable is recovered through an automatic extension mechanism, the cable bead is driven to move towards the traction extension air release valve, when the cable bead moves to a position between two movable sealing valve cores B, the movable sealing valve core B on the upper side is pushed upwards, the movable sealing valve core B on the lower side is pushed downwards, a valve core sealing cover leaves an air release hole in a corresponding position, and after the cable bead leaves the movable sealing valve core B, the movable sealing valve core B automatically returns under the action of a compression spring B to seal the air release hole;

the diameter of a cable bead which is arranged on the traction extension and recovery cable and corresponds to each traction telescopic air release valve is sequentially decreased from outside to inside along the longitudinal direction of the parafoil body, and correspondingly, the distance between the opposite ends of two movable sealing valve cores B in the traction telescopic air release valves is also sequentially decreased from outside to inside; and ensures that each cable bead can and only can pass through all air bags outside its corresponding air bag.

Has the advantages that:

(1) According to the automatic telescopic inflation and deflation flying parafoil, the airbag is added to the canopy, so that the pneumatic appearance of the parafoil under various wind conditions can be ensured, and the stability of the flying state is improved; meanwhile, the wingspan area is adjusted by driving the canopy to stretch, and the wind action area of the parafoil can be reduced by contracting the parafoil under the condition of high wind, so that the resistance formed by wind power is reduced; the parafoil and the hauling rope are prevented from being damaged by pulling, and the automatic extending function of the parafoil is realized, so that an realizable foundation can be laid for unmanned control of takeoff and recovery of the parafoil.

(2) The number of the air bags can be selected according to the use requirement during use so as to adjust the lifting force of the parafoil and stabilize the structural strength of the parafoil.

(3) The traction telescopic deflation valve used in the invention can realize the orderly deflation of the air bag, thereby ensuring the orderly shrinkage of the canopy and stabilizing the folding and unfolding of the parafoil.

(4) For the ram parafoil, the volume of the air chamber is limited, and the air bag can be folded in a double-layer mode or a three-layer mode, so that the volume of the air bag can be further improved and the lifting force of the parafoil can be improved on the basis that the original structure of the ram parafoil is not changed.

(5) The automatic telescopic mechanism is arranged in the middle of the parafoil body, and the foldable air bag is arranged in the most middle air chamber of the ram parafoil, so that the dead weight can be adjusted, the middle collapse can be avoided, and the gravity of the automatic telescopic mechanism does not influence the pneumatic appearance of the parafoil.

(6) The empennage connected with the parafoil body can be arranged according to the use requirement, and the flexible empennage is arranged at the longitudinal middle position of the rear end of the parafoil body, so that the stability of the parafoil body in a certain airspace in a fixed stagnation mode can be improved.

Drawings

FIG. 1 is a schematic structural view of an inflatable parafoil according to the present invention;

wherein: 1-a traction rope, 2-a load cabin, 3-a parafoil rope, 4-a parafoil body and 5-a tail wing;

FIG. 2 is a schematic structural view of an automatic retracting mechanism;

wherein: 12-sliding cam, 13-fixed concave wheel, 14-rope winding motor, 15-clutch, 16-rope winding disc, 17-rope winding disc shaft and 18-sliding cam fork translation rod;

FIG. 3 is a schematic view of the installation of the traction expansion deflation valve on the air bag;

wherein: 6-air bag, 11-traction extension recovery cable hole, 19-cable bead, 20-movable sealing valve core A, 22-traction extension recovery cable, 23-compression spring A, 24-air release valve body A, 25-air release hole;

FIG. 4 is a schematic view of a uniwing umbrella with air bags;

wherein: 6-air bag; 7-a flexible reinforcing spacer tape;

FIG. 5 is a schematic view of the layout of the air bag on the single-wing umbrella;

wherein: 6-air bag; 7-a flexible reinforced isolation belt, 8-an inflation valve, 9-an inflation belt, 10-a telescopic mechanism fixing plate and 11-a traction extension recovery cable hole;

FIG. 6 is a schematic view of the structure of a collapsible air bag in the middle of a ram parafoil;

wherein: 10-a telescopic mechanism fixing plate, 26-an air filling and discharging valve, 27-an external vent pipe, 28-an internal vent pipe, 29-a flexible folding surface and 30-a bag bundling rope;

FIG. 7 is a schematic diagram of the structure of foldable air bags on both sides of the middle of a ram parafoil;

wherein: 11-drawing, stretching and recovering a rope hole;

FIG. 8 is a schematic view of the structure of the foldable air bag at the two extreme sides of the ram-type parafoil;

wherein: 31-cable fixing ring;

FIG. 9 is a schematic view showing the structure of another traction extension deflation valve in embodiment 3;

wherein: 6-air bag, 11-traction extension recovery cable hole, 19-cable bead, 22-traction extension recovery cable, 25-air release hole, 32-valve core sealing cover, 33-air release valve body B, 34-movable sealing valve core B and 35-compression spring B.

FIG. 10 is a schematic view of a deformable wingspan configuration with a tow telescopic bleed valve;

wherein: 21-traction expansion release valve.

Detailed Description

The invention is described in detail below by way of example with reference to the accompanying drawings.

Example 1:

as shown in fig. 1, the present embodiment provides an auto-retractable inflation/deflation parafoil, which can ensure that the parafoil always maintains the aerodynamic shape when encountering crosswind or other abnormal conditions, thereby increasing the stability of the flight state.

As shown in fig. 1, the inflation and deflation parafoil is a traction parafoil, and comprises: the parachute comprises a load cabin 2, a hauling rope 1 connected with the load cabin 2 and a parafoil body 4 connected with the load cabin 2 through a plurality of parafoil ropes 3; the empennage 5 connected with the parafoil body 4 can be arranged according to the use requirement. The flexible empennage 5 is arranged at the longitudinal middle position of the rear end of the parafoil body 4, and the stability of the parafoil body in fixed stagnation in a certain airspace can be improved by arranging the empennage.

For convenience of description, the parafoil body 4 is made longitudinal (i.e., left-right direction as viewed in fig. 1) in the longitudinal direction and transverse (i.e., front-back direction as viewed in fig. 1) in the width direction. The parafoil body 4 comprises an umbrella cover and an air bag; in addition, the flight wing also comprises an automatic telescopic mechanism for driving the parafoil body 4 to longitudinally stretch. The canopy in this embodiment is a canopy of a ram parafoil, i.e., the parafoil body 4 is obtained by directly improving the existing ram parafoil.

The canopy of punching press parafoil has a plurality of front end open-ended air chambers along vertically, can place the gasbag (the gasbag is fixed inside the air chamber, if the mode of making up or tying up with the canopy that forms corresponding air chamber links together) in one or more air chambers according to the use needs, and still keep parafoil body 4 whole to be bilateral symmetry structure after setting up the gasbag. In view of the fact that the automatic retracting mechanism is arranged in the middle air chamber, at least the air bag is arranged in the middle air chamber. The air bag is arranged in the air chamber to ensure that the parafoil can keep the pneumatic appearance under various wind conditions, and the stability of the flying state of the ram parafoil is improved.

The self weight of the parafoil can be adjusted by placing an air bag in the middle air chamber, so that collapse is avoided. The inside of the air bag can be filled with hydrogen or helium according to the requirement so as to improve the lift force of the parafoil, so that the parafoil can float under the windless condition, and the parafoil is stable to fold and unfold.

The air bag positioned in the middle air chamber is internally provided with the automatic telescopic mechanism, the telescopic motion of the parafoil bodies 4 on the left side and the right side is controlled through the automatic telescopic mechanism, the wingspan area is further adjusted, and the overload acting force of strong wind on the parafoil can be reduced through the contraction of the two sides of the parafoil bodies 4 when the wind power is too large, so that the parafoil is prevented from deflecting.

As shown in fig. 2, the automatic telescopic mechanism can drive the airbags on the left and right sides to synchronously extend and retract through one set of rope winding unit, and can also be provided with two rope winding units for respectively driving the airbags on the left and right sides of the automatic telescopic mechanism to extend and retract. In this example, the automatic retracting mechanism includes: the automatic telescopic mechanism comprises a clutch unit and two rope winding units, wherein the two rope winding units are respectively a left rope winding unit and a right rope winding unit and are respectively used for driving air bags positioned on the left side and the right side of the automatic telescopic mechanism to stretch. The two rope coiling units share one clutch unit; the rope winding unit includes: the device comprises a fixed concave wheel 13, a sliding cam 12, a rope coiling motor 14, a rope coiling disk 16, a rope coiling disk shaft 17, a traction extension recovery rope 22 and a traction extension release valve 21; the power output end of the rope winding motor 14 is coaxially and fixedly connected with the fixed concave wheel 13; the rope coiling disc shaft 17 coaxially and fixedly connects the sliding cam 12 and the rope coiling disc 16 together through a spline; and the end face of the sliding cam 12 with convex teeth is coaxially opposite to the end face of the fixed concave wheel 13 with concave teeth. The clutch unit is used for connecting or disconnecting the sliding cam 12 and the fixed concave wheel 13 in the two rope winding units; the clutch unit comprises a clutch 15 and a sliding cam fork translation rod 18; the clutch 15 can be an eccentric wheel driven by an eccentric wheel motor or an electromagnetic push rod driven by an electromagnetic clutch, one end of a sliding cam shifting fork translation rod 18 is respectively matched with the sliding cams 12 of the two rope coiling units, and the other end of the sliding cam shifting fork translation rod is connected with the clutch 15; the clutch 15 drives the shifting rod 18 of the sliding cam shifting fork to move, and then drives the two sliding cams 12 to move synchronously, so that the sliding cams 12 and the fixed concave wheel 13 in the two rope coiling units are synchronously combined or separated. The sliding cam shifting fork translation rod 18 is only used for driving the two sliding cams 12 to translate and does not rotate along with the sliding cams 12; for example, the outer circumferential surface of the sliding cam 12 is provided with an annular groove, the part of the sliding cam fork translation rod 18, which is matched with the two sliding cams 12, is of a disc structure, and two opposite ends of the outer circumferential surface of the sliding cam fork translation rod are respectively positioned in the annular grooves of the outer circumferential surfaces of the two sliding cams 12 to push the two sliding cams 12 to move axially without rotating along with the sliding cams 12.

A traction, expansion and recovery cable 22 is wound on the rope rolling disc 16, and the traction, expansion and recovery cable 22 sequentially passes through the traction, expansion and recovery air release valves 21 on the air bags 6 on the corresponding side and then is connected with the air bag or the air chamber at the extreme end part of the side (namely, the air bag or the air chamber is connected with the extreme end part of the side of the parafoil body); for air chambers without air bags, the pulling and stretching recovery cables 22 pass through the rope threading holes on the ribs on the two sides of the air chamber and then are connected with the most end part of the side of the parafoil body. In the initial state, the sliding cam 12 and the fixed concave wheel 13 are in a separated state, and when the air bag is inflated to unfold the canopy, the pulling on the rope reel 16 is automatically pulled and released to extend and retract the rope 22; when the umbrella clothes need to be recovered, the sliding cam 12 is driven to move through the clutch mechanism to be combined with the fixed concave wheel 13, and at the moment, the rope coiling motor 14 can drive the rope coiling disc 16 to rotate, so that the recovery of the rope 22 which is pulled and extended on the rope coiling disc 16 is realized. The traction and extension recovery cable 22 is matched with the traction telescopic deflation valve 21 arranged at the position of the air bag deflation hole, so that the traction telescopic deflation valve 21 is triggered to open to realize deflation of the air bag when the cable is recovered to the position of the air bag, and after the air bag is deflated, the traction and extension recovery cable 22 can be recovered to realize retraction of an air chamber where the air bag is located.

In this embodiment, the structure of the traction expansion deflation valve 21 is as shown in fig. 4, the air bag 6 is a strip-shaped air chamber matched with the ram parafoil air chamber, the center of the air bag 6 is provided with a traction extension recovery rope hole 11, and the axial direction of the traction extension recovery rope hole 11 is along the longitudinal direction of the parafoil body 4. An air vent 25 is provided on the inner circumferential surface of the airbag 6 at the position of the traction extension recovery cable hole 11, and a traction extension air vent 21 is installed in the traction extension recovery cable hole 11 at a position corresponding to the air vent 25. The traction extension purge valve 21 includes: the air release valve comprises a release valve body A24, a movable sealing valve core A20 and a compression spring A23; the air release valve body A24 is a hollow cylindrical structure and is coaxially arranged in the traction extension recovery cable hole 11, and the air release valve body A24 avoids the air release hole 25 (or an opening is arranged on the air release valve body A24 at a position corresponding to the air release hole 25); a compression spring A23 and a movable sealing valve core A20 are coaxially arranged in the air release valve body A24, the outer circumferential surface of the movable sealing valve core A20 is in sliding fit with the inner circumferential surface of the air release valve body A24, one end of the compression spring A23 is abutted against the movable sealing valve core A20, the other end of the compression spring A23 is abutted against the inner bottom surface of the air release valve body A24, and the end part of the movable sealing valve core A20 is limited by a limiting ring arranged at the end part of the air release valve body A24; initially, under the action of the preload of the compression spring a23, the movable sealing valve core a20 blocks the air release hole 25 (at this time, the movable sealing valve core a20 is in contact with the limit ring).

The traction extension recovery cable 22 is provided with a trigger piece of the traction extension release valve 21 corresponding to each traction extension release valve 21, and the trigger piece is used for pushing the movable sealing valve core A20 inwards when the traction extension recovery cable 22 is recovered, so that the movable sealing valve core A20 moves inwards to open the vent hole 25, and the air bag 6 is deflated. In this example, the triggering element is a cable bead 19, the diameter of the cable bead 19 is greater than the inner diameter of the movable sealing valve core a20, when the automatic telescopic mechanism recovers, pulls and stretches the recovered cable 22, the cable bead 19 is driven to move to the pulling telescopic deflation valve 21, when the cable bead 19 moves to the position contacting with the movable sealing valve core a20, the movable sealing valve core a20 is pushed inwards, the movable sealing valve core a20 moves inwards to open the deflation hole 25, and the deflation of the air bag 6 is realized; after the air bag 6 is deflated, the air bag 6 can be recovered by continuously recovering, pulling and stretching the recovery cable 22; after the traction extension recovery cable 22 is released and the cable bead 19 leaves the movable sealing valve core A20, the movable sealing valve core A20 automatically returns under the action of the compression spring A23 to block the air release hole 25.

In order to realize the sequential deflation of the air bags 6 from outside to inside along the longitudinal direction, the diameter of a cable bead 19 which is arranged on the traction extension and recovery cable 22 and corresponds to each traction extension and contraction deflation valve 21 is sequentially reduced from outside to inside along the longitudinal direction of the parafoil body 4, and correspondingly, the inner diameter of each movable sealing valve core A20 in the traction extension and contraction deflation valve 21 is also sequentially reduced from outside to inside; and each cable bead 19 can only pass through all the airbags 6 at the outer sides of the corresponding airbags 6, for example, when the airbags are placed in the five chambers at the left side, the five airbags 6 are numbered as a first airbag, a second airbag, a third airbag, a fourth airbag and a fifth airbag from the outside to the inside in sequence; the diameter of the cable bead 19 corresponding to the first air bag is the largest, and the cable bead cannot penetrate through the first air bag and only can push the movable sealing valve core A20 corresponding to the first air bag to move; the cable bead 19 corresponding to the second air bag can pass through the first air bag but can not pass through the second air bag; the cable bead 19 corresponding to the third air bag can penetrate through the first air bag and the second air bag but cannot penetrate through the third air bag; and so on.

In addition, each air bag 6 is provided with an independent inflation valve and an independent deflation valve, in the embodiment, the inflation valve and the deflation valve are all one-way valves, and the air bags 6 can be rapidly inflated through the inflation valves; can carry out quick gassing and bleed to the gasbag when retrieving the parafoil body through the bleed valve to the inside gas of discharge gasbag 6. The inflation valves of the respective airbags may be connected by an inflation band which is connected to an inflation device, thereby enabling inflation of the respective airbags 6.

The flying parafoil with the structure can make up the defects of the conventional ram parafoil, and the conventional ram parafoil is provided with an open air inlet and is only suitable for windy weather; in the scheme, the air bag 6 filled with helium or hydrogen is fixed in the air chamber of the stamping parafoil according to requirements, so that the aerodynamic appearance of the parafoil can be kept through the air bag 6 under any weather conditions, and the parafoil is ensured to be always in an extended state when encountering crosswind or other abnormal conditions, thereby improving the stability of the flying state. Meanwhile, the expansion of the air bag 6 can be realized through an automatic stretching mechanism, so that the wingspan area can be adjusted.

Example 2:

the difference between the embodiment 1 and the embodiment 1 is that the canopy in the embodiment is a canopy of a single-wing umbrella, that is, the parafoil body 4 is obtained by directly modifying a conventional single-wing umbrella.

When the canopy is a single-wing umbrella, the airbag rows formed by a plurality of airbags 6 sequentially connected in the longitudinal direction are directly arranged on the upper surface or/and the lower surface of the single-wing umbrella canopy according to the aerodynamic shape of the single-wing umbrella canopy, and the airbag rows are connected with the canopy, for example, each airbag 6 is connected with the canopy at the corresponding position in a sewing or binding mode, as shown in fig. 4.

As shown in fig. 5, the airbag rows are formed by sequentially connecting a plurality of airbags 6 along the longitudinal direction, a flexible reinforced isolation strip 7 is arranged between every two adjacent airbags 6, and the flexible reinforced isolation strip 7 has the main functions of: firstly, the strength of the airfoil is increased; secondly, ensuring that proper shape deformation exists between each independent air bag 6 and ensuring that the pneumatic shape of the whole parafoil body after the air bags 6 are inflated conforms to the original designed pneumatic layout; thirdly, an isolation belt is established for independently deploying and retracting each independent air bag 6, so that the problem that the whole parafoil surface is poor in pneumatic appearance due to the fact that the whole parafoil is designed into a large air bag and air leakage occurs is avoided; and fourthly, the flexible reinforced separation belt can drive each independent air bag 6 to extend when the parafoil is automatically extended, so that the automatic extending and umbrella folding functions can be conveniently realized.

A longitudinal inflatable belt 23 is arranged on one transverse side of the parafoil body 4, an inflatable valve 8 is arranged on the inflatable belt 23 corresponding to each air bag 6 and used for rapidly inflating the air bags 6, and the inflatable valve 8 is a one-way valve; further, each airbag 6 is provided with a deflation valve.

A telescopic mechanism fixing plate 10 is arranged between the two air bags 6 positioned in the middle and is used for installing an automatic telescopic mechanism; a telescopic mechanism fixing plate 10 can also be arranged in the air bag 6 positioned at the middle part; the arrangement position of the telescopic mechanism fixing plate 10 is determined according to the number of the air bag rows, and the left and right symmetry of the whole air bag row is ensured.

The automatic telescopic mechanism has the same structural form as that of the embodiment 1, namely, the embodiment is different from the embodiment 1 only in the arrangement position of the air bag relative to the umbrella coat.

Example 3:

on the basis of the above embodiment 1 or embodiment 2, the present embodiment provides another configuration of the traction telescopic bleed valve 21.

As shown in fig. 9, an air vent 25 is provided on the inner circumferential surface of the airbag 6, and the traction expansion deflation valve 21 is provided at the position of the air vent 25 for closing or opening the air vent 25. In this example, the traction extension deflation valve 21 comprises two valve bodies arranged oppositely, and each valve body comprises: a deflation valve body B33, a movable sealing valve core B34, a valve core sealing cover 32 and a compression spring B35; the air release valve body B33 is of a hollow cylindrical structure and is installed in the traction extension recovery cable hole 11, a movable sealing valve core B34 is coaxially arranged inside the air release valve body B33, the movable sealing valve core B34 can move along the axis of the movable sealing valve core B34, and a valve core sealing cover 32 for sealing the air release hole 25 is arranged at the end part of the movable sealing valve core B34 extending out of the air release valve body B33; the compression spring B35 is coaxially sleeved outside the movable sealing valve core B34, one end of the compression spring is abutted against the inner bottom surface of the deflation valve body B33, and the other end of the compression spring is connected with the valve core sealing cover 32; initially, the spool seal cover 32 seals the bleed hole 25 under the biasing force of the compression spring B35.

The ends of the two movable sealing valve cores B34 are opposite; when the automatic telescopic mechanism recovers, pulls and stretches the recovered cable 22, the cable bead 19 is driven to move towards the traction telescopic deflation valve 21, when the cable bead 19 moves to a position between two movable sealing valve cores B34, the movable sealing valve core B34 positioned at the upper side is pushed upwards, the movable sealing valve core B34 positioned at the lower side is pushed downwards, the valve core sealing cover 32 is enabled to open the deflation hole 25 at the corresponding position, and the deflation of the air bag 6 is realized; after the cable bead 19 leaves the movable sealing valve core B34, the movable sealing valve core B34 automatically returns under the action of the compression spring B35 to block the air vent 25.

Similarly, in order to realize the sequential deflation of the air bags 6 from outside to inside along the longitudinal direction, the diameter of the cable bead 19 which is arranged on the traction extension and recovery cable 22 and corresponds to each traction telescopic deflation valve 21 is sequentially decreased from outside to inside along the longitudinal direction of the parafoil body 4, and correspondingly, the distance between the opposite ends of two movable sealing valve cores B34 in the traction telescopic deflation valve 21 is also sequentially decreased from outside to inside; and ensures that each cable bead 19 can and only can pass through all air bags 6 outside its corresponding air bag 6.

Example 4:

in addition to the above embodiment 1, the lift force of the parafoil can be increased by further increasing the volume of the airbag 6 without changing the structure of the conventional ram parafoil. The foldable air bag can be selected to be used in a certain air chamber according to requirements, and the foldable air bag can be a double-layer folded air bag or a three-layer folded air bag.

The foldable air bag can be used in a certain air chamber according to the requirement; in view of the fact that the automatic telescopic mechanism is arranged in the middle air chamber, a foldable air bag is usually arranged in the middle air chamber of the ram parafoil so as to adjust the dead weight, avoid middle collapse and enable the gravity of the automatic telescopic mechanism not to influence the pneumatic appearance.

When a foldable airbag is adopted in the middle-most air chamber, the present embodiment provides a structure of a three-layer foldable airbag, as shown in fig. 6, the three-layer foldable airbag includes three airbag sections, which are connected in sequence, and are respectively an airbag section a, an airbag section B and an airbag section C; the air bag section A is connected with the air bag section B through a flexible folding surface 29, and the air bag section B is connected with the air bag section C through the flexible folding surface 29; the flexible folding surface 29 is provided with an internal vent pipe 28 for communicating the three air bag sections and an external vent pipe 27 for communicating the three air bag sections with an external inflation pipeline, and the external vent pipe 27 is provided with an inflation and deflation valve 26 (which can be respectively provided with an inflation valve and a deflation valve) for inflation and deflation. Further, a telescopic mechanism fixing plate 10 for mounting an automatic telescopic mechanism is provided on the air bag section a.

During installation, the air bag section A is installed in the air chamber and serves as a middle-layer air bag, at the moment, the flexible folding surface 29 between the air bag section A and the air bag section B is located at the opening of the front side of the air chamber, the air bag section B is folded above the air chamber and serves as an upper-layer air bag in an upward folding mode at the position of the flexible folding surface 29, the flexible folding surface 29 between the air bag section B and the air bag section C is located on the rear side of the upper-layer air bag at the moment, the air bag section C is folded downwards in the rear side of the upper-layer air bag, and the air bag section C is folded and serves as a lower-layer air bag below the air chamber. The three balloon segments are then tied together by the tether 30.

When the foldable air bags are adopted in the air chambers at two sides of the middle, the structure of the foldable air bag is only different from that of the foldable air bag in the air chamber at the middle, namely, the telescopic mechanism fixing plate 10 is not arranged on the air bag section A, but a traction and extension recovery cable hole 11 is arranged for installing a traction and extension deflation valve, as shown in figure 7.

When the foldable air bag is used in the outermost air chamber, the structure is different from that of the foldable air bag in the middle air chamber only in that the telescopic mechanism fixing plate 10 is not arranged on the air bag section a, but a cable fixing ring 31 is arranged for fixing the end part of the cable at the corresponding side, and a traction telescopic deflation valve is also arranged inside the cable fixing ring 31, as shown in fig. 8.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An automatic telescopic inflation and deflation type flying parafoil, comprising: the parafoil device comprises a load cabin and a parafoil body connected with the load cabin through a plurality of parafoil ropes; it is characterized by also comprising an automatic telescopic mechanism;

the parafoil body comprises an canopy and a plurality of inflatable air bags;

the air bag is connected with the canopy;

the automatic telescopic mechanism is used for driving the longitudinal two ends of the parafoil body to stretch so as to adjust the wingspan area.

2. The automatic retractable charging and discharging type flying parafoil as claimed in claim 1, wherein when the canopy is a canopy of a ram parafoil, air bags are placed in one or more air chambers of the ram parafoil, and the air bags are fixed in the air chambers and connected with the canopy forming the corresponding air chamber; the air bag is provided with an independent inflation valve and an independent deflation valve and is used for rapid inflation and deflation of the air bag.

3. The auto-retractable charging/discharging type parafoil as claimed in claim 2, wherein the auto-retractable mechanism is provided in an air chamber in the middle of the parafoil body, and an air bag is provided in at least the air chamber in the middle.

4. The automatic retractable charging and discharging type parafoil according to claim 2 or 3, wherein the air bag is a double-layer or three-layer folding air bag;

when the double-layer folding air bag is adopted, the double-layer folding air bag comprises two air bag sections which are connected through a flexible folding surface, wherein one air bag section is positioned in the air chamber, and the other air bag section is folded to the upper part or the lower part of the air chamber;

when the three-layer folding air bag is adopted, the three-layer folding air bag comprises three air bag sections which are sequentially connected through a flexible folding surface, wherein one air bag section is positioned in the air chamber, and the other two air bag sections are respectively folded to the upper part and the lower part of the air chamber.

5. The auto-retractable charging and discharging type parafoil according to claim 1, wherein when the canopy is a unilaterally parachute canopy, the airbag rows formed by a plurality of airbags which are sequentially connected in the longitudinal direction are directly arranged on the upper side or/and the lower side of the canopy according to the aerodynamic shape of the unilaterally parachute canopy, and each airbag is connected with the canopy at the corresponding position;

a longitudinal inflatable belt is arranged on one transverse side of the airbag row, and an inflation valve is arranged on the inflatable belt corresponding to each airbag and used for rapidly inflating the airbags; in addition, each air bag is provided with an air release valve;

the automatic telescopic mechanism is arranged in the middle of the air bag row.

6. The auto-retractable aero-inflatable parafoil according to claim 5, wherein a flexible reinforcing spacer is provided between each two adjacent airbags.

7. The auto-retractable air-inflating/deflating type parafoil as claimed in claim 1, 2, 3, 5 or 6, wherein said auto-retracting mechanism comprises: the electric reel mechanism, the traction extension recovery cable and the traction extension air release valve;

the automatic telescopic mechanism is arranged in the middle of the parafoil body, one ends of the two traction, extension and recovery cables are fixed and wound on the electric reel mechanism, the other ends of the two traction, extension and recovery cables extend to the left side and the right side of the parafoil body respectively, sequentially pass through traction, extension and recovery air release valves in the middle of each air bag at the corresponding side and then are connected with the parafoil body at the extreme end of the side;

the traction expansion deflation valve is used for plugging or opening an air vent on the air bag, and a trigger piece is arranged on the traction expansion recovery cable corresponding to each traction expansion deflation valve;

when the electric reel mechanism recovers, pulls, stretches and recovers the mooring rope, and the trigger piece moves to the position of the corresponding pulling telescopic deflation valve, the pulling telescopic deflation valve is triggered to open to realize deflation of the air bag, so that the parafoil body at the position of the air bag retracts; when the trigger piece leaves the traction telescopic deflation valve, the traction telescopic deflation valve is automatically closed to plug the deflation hole.

8. The auto-retractable charging and discharging type parafoil as claimed in claim 7, wherein the electric reel mechanism comprises: the two rope winding units are respectively used for driving the parafoil bodies positioned on the left side and the right side of the automatic telescopic mechanism to stretch;

the rope winding unit includes: the rope winding device comprises a fixed concave wheel, a sliding cam, a rope winding motor, a rope winding disc and a rope winding disc shaft;

the power output end of the rope winding motor is coaxially and fixedly connected with the fixed concave wheel; the rope coiling disc shaft coaxially and fixedly connects the sliding cam and the rope coiling disc through a spline; the end surface of the sliding cam with convex teeth is coaxially opposite to the end surface of the fixed concave wheel with concave teeth; the traction extension recovery rope is wound on the rope coiling disc;

the clutch unit is used for connecting or disconnecting the sliding cam and the fixed concave wheel in the two rope winding units; the clutch unit comprises a clutch and a sliding cam shifting fork translation rod; the shifting rod of the sliding cam shifting fork is connected with the clutch, and the other end of the shifting rod of the sliding cam shifting fork is respectively matched with the sliding cams of the two rope coiling units and used for driving the two sliding cams to move synchronously, so that the sliding cams in the two rope coiling units are synchronously combined with or separated from the fixed concave wheel.

9. The auto-retractable aero-and pneumatic-aero-derivative parachute according to claim 7, wherein the traction extension deflation valve comprises: the air release valve comprises a deflation valve body A, a movable sealing valve core A and a compression spring A;

the air release valve body A is of a hollow cylindrical structure and is coaxially arranged in the traction extension recovery cable hole, and the air release valve body A avoids the air release hole on the air bag; a compression spring A and a movable sealing valve core A are coaxially arranged in the air release valve body A, and the movable sealing valve core A is in sliding fit with the air release valve body A; one end of the compression spring A is abutted against the movable sealing valve core A, the other end of the compression spring A is abutted against the inner bottom surface of the air release valve body A, and the end part of the movable sealing valve core A is limited by a limiting ring arranged at the end part of the air release valve body A; initially, under the action of the pre-tightening force of a compression spring A, the movable sealing valve core A blocks the air vent;

a rope bead is arranged on the traction extension recovery rope corresponding to each traction extension air release valve and serves as a trigger piece, and the rope beads are used for pushing the movable sealing valve core A inwards to enable the movable sealing valve core A to move inwards to open the air hole when the traction extension recovery rope is recovered;

the diameter of the cable bead is larger than the inner diameter of the movable sealing valve core A, the diameter of the cable bead, which is arranged on the traction extension and recovery cable and corresponds to each traction telescopic deflation valve, is sequentially reduced from outside to inside along the longitudinal direction of the parafoil body, and correspondingly, the inner diameter of each movable sealing valve core A in the traction telescopic deflation valve is also sequentially reduced from outside to inside; it is ensured that each cable bead can and only can pass through all air bags outside its corresponding air bag.

10. The auto-retractable aero-inflatable parafoil according to claim 7, wherein said retractable deflation valve comprises two oppositely disposed valve bodies, each valve body comprising: the air release valve comprises a release valve body B, a movable sealing valve core B, a valve core sealing cover and a compression spring B;

the air release valve body B is of a hollow cylindrical structure and is arranged in the traction extension recovery cable hole, a movable sealing valve core B is coaxially arranged in the air release valve body B and can move along the axis of the movable sealing valve core B, and a valve core sealing cover for sealing the air release hole is arranged at the end part of the movable sealing valve core B, which extends out of the air release valve body B; the compression spring B is coaxially sleeved outside the movable sealing valve core B, one end of the compression spring B is abutted against the inner bottom surface of the air release valve body B, and the other end of the compression spring B is connected with the valve core sealing cover; initially, under the action of the pretightening force of the compression spring B, the valve core sealing cover blocks the air vent;

the ends of the two movable sealing valve cores B are opposite; a cable bead is arranged on the traction extension recovery cable corresponding to each traction extension air release valve to serve as a trigger piece, when the traction extension recovery cable is recovered through an automatic extension mechanism, the cable bead is driven to move towards the traction extension air release valve, when the cable bead moves to a position between two movable sealing valve cores B, the movable sealing valve core B on the upper side is pushed upwards, the movable sealing valve core B on the lower side is pushed downwards, a valve core sealing cover leaves an air release hole in a corresponding position, and after the cable bead leaves the movable sealing valve core B, the movable sealing valve core B automatically returns under the action of a compression spring B to seal the air release hole;

the diameter of a cable bead which is arranged on the traction extension recovery cable and corresponds to each traction telescopic deflation valve is sequentially decreased from outside to inside along the longitudinal direction of the parafoil body, and correspondingly, the distance between the opposite ends of two movable sealing valve cores B in the traction telescopic deflation valves is also sequentially decreased from outside to inside; and ensures that each cable bead can and only can pass through all air bags outside its corresponding air bag.

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