A device for controlling the drag of a parachute

Abstract

The present invention discloses a device for controlling the resistance of a parachute, comprising a parachute mechanism, a resistance control mechanism and an adjustment mechanism, wherein the parachute mechanism comprises a canopy, a plurality of parachute ropes are arranged around the bottom of the canopy, and a parachute frame is provided at the bottom of the plurality of parachute ropes; the resistance control mechanism comprises a plurality of pull ropes arranged around the canopy, the plurality of pull ropes are arranged at intervals with the plurality of parachute ropes, and the tops of the plurality of pull ropes are fixedly connected to the top of the canopy; the adjustment mechanism is arranged on the parachute frame, and the adjustment mechanism is used to retract and extend the pull ropes. The beneficial effects of the present invention are: by retracting and extending the pull ropes by the adjustment mechanism, the length of the pull ropes is changed, thereby controlling the effective projected area of ​​the canopy, thereby accurately controlling the air resistance experienced by the parachute, and thus achieving precise adjustment of the descent speed, the structure is simple, the cost is low, and the safety is high.

Description

Technical Field

[0001] The present invention relates to the field of parachutes, and in particular to a device for controlling the resistance of a parachute. Background Art

[0002] When a parachute's deployment overload exceeds the load capacity of the suspended object, some measures need to be taken to reduce the deployment overload to meet the requirements of the suspended object. The deployment overload is generally related to the parachute's drag area, deployment speed, and atmospheric density. Therefore, reducing the parachute's drag area during deployment is an effective measure to reduce the deployment overload.

[0003] In the related art, a parachute is proposed, comprising a canopy, a plurality of parachute ropes, a loading platform and a closing assembly, wherein the first end of each parachute rope is connected to the bottom of the canopy, and the second end of each parachute rope is connected to the loading platform, and the closing assembly comprises a winch, a pull rope ring, a plurality of suspension ropes and a plurality of pull ropes, the winch is located on the loading platform, the suspension ropes are arranged at intervals along the circumference of the pull rope ring, the first end of each suspension rope is connected to the top of the parachute rope, the second end of each suspension rope is connected to the pull rope ring, the plurality of pull ropes are arranged at intervals along the circumference of the canopy, the first end of each pull rope is connected to the bottom of the canopy, and the second end of each pull rope passes through the pull rope ring and is connected to the winch.

[0004] Regarding the above-mentioned related technologies, there are the following defects: the change of parachute resistance is achieved through a closing component, which includes a winch, a pull rope ring, multiple suspension ropes and multiple pull ropes. It is not only complex in structure and high in cost, but also increases the weight of the parachute and has low safety. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies, propose a device for controlling parachute resistance, and solve the technical problem of the complex structure of the closing assembly in the prior art.

[0006] To achieve the above technical objectives, the technical solution of the present invention provides a device for controlling parachute resistance, comprising a parachute mechanism, wherein the parachute mechanism includes a canopy, a plurality of parachute lines are arranged around the bottom of the canopy, and a parachute frame is provided at the bottom of the plurality of parachute lines;

[0007] A resistance control mechanism, the resistance control mechanism comprising a plurality of pull ropes looped around the canopy, the plurality of pull ropes being arranged at intervals with the plurality of parachute lines, the tops of the plurality of pull ropes being fixedly connected to the top of the canopy; and,

[0008] An adjustment mechanism is provided on the umbrella frame and is used for retracting and releasing the draw cord.

[0009] In some embodiments, the canopy is provided with a limiting component for limiting the position of the pull rope.

[0010] In some embodiments, the limiting assembly includes a connecting belt provided on the canopy, the connecting belt is provided with a limiting ring, and the pull rope passes through the limiting ring.

[0011] In some embodiments, the adjustment mechanism includes a winch provided on the umbrella frame, and the bottom end of the pull rope is wound on the winch.

[0012] In some embodiments, the pull rope includes a rope core and a rope loop arranged on the outside of the rope core, and the rope core is formed by twisting a plurality of rope bodies.

[0013] In some embodiments, the canopy is provided with an oil injection assembly for applying lubricating oil to the pull rope.

[0014] In some embodiments, the oil filling assembly includes an oil storage chamber provided on the canopy, an oil guide ring on the oil storage chamber, the outlet of the oil storage chamber is connected to the inlet of the oil guide ring, the pull rope passes through the oil guide ring, and a plurality of oil application ports are provided in the oil guide ring.

[0015] In some embodiments, an oiling ball is rotatably connected to the oiling port, and the oiling ball is partially located inside the oil guide ring and partially located outside the oil guide ring. The oiling ball abuts against the pull rope.

[0016] In some embodiments, the oil application port is slidably connected to an oil guide pipe, the oil application port is communicated with the inlet of the oil guide pipe, the oil application ball is rotatably connected to the end of the oil guide pipe, the oil application ball is partially located inside the oil guide pipe, and partially located outside the oil guide pipe, the oil guide pipe is provided with a spring, one end of the spring is connected to the oil guide pipe, and the other end of the spring is connected to the oil guide ring, the spring is in a compressed state, and the spring causes the oil guide pipe to have a tendency to slide toward the direction of the pull rope.

[0017] In some embodiments, a plurality of oil storage grooves are provided on the surface of the oil-coated ball.

[0018] Compared with the prior art, the beneficial effects of the present invention include: by adjusting the mechanism to retract and extend the drawstring, the length of the drawstring is changed, thereby controlling the effective projected area of ​​the canopy, thereby accurately controlling the air resistance encountered by the parachute, and thus achieving precise adjustment of the descent speed, with a simple structure, low cost and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the parachute mechanism, resistance control mechanism and adjustment mechanism provided by the present invention in the opened state;

[0020] Figure 2 It is a schematic diagram of the overall structure of the parachute mechanism, resistance control mechanism and adjustment mechanism provided by the present invention in a contracted state;

[0021] Figure 3This is a cross-sectional view of the overall structure of the draw cord provided by the present invention;

[0022] Figure 4 It is a schematic diagram of the overall structure of the limit assembly provided by the present invention;

[0023] Figure 5 It is a schematic diagram of the overall structure of the oil injection assembly provided by the present invention.

[0024] Description of reference numerals:

[0025] 1. Parachute mechanism; 11. Canopy; 12. Parachute rope; 13. Parachute frame; 2. Resistance control mechanism; 21. Pull rope; 211. Rope core; 2111. Rope body; 212. Rope loop; 3. Adjustment mechanism; 31. Winch; 4. Limiting assembly; 41. Connecting belt; 42. Limiting ring; 5. Oil filling assembly; 51. Oil storage chamber; 52. Oil guide ring; 53. Oiling port; 54. Oiling ball; 55. Oil guide pipe; 56. Spring; 57. Oil storage tank. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The present invention provides a device for controlling parachute resistance, the structure of which is as follows: Figure 1 - Figure 5 As shown, it includes a parachute mechanism 1, a resistance control mechanism 2 and an adjustment mechanism 3.

[0028] The parachute mechanism 1 includes a canopy 11 , a plurality of parachute cords 12 are provided around the bottom of the canopy 11 , and a parachute frame 13 is provided at the bottom of the plurality of parachute cords 12 .

[0029] The resistance control mechanism 2 includes a plurality of pull ropes 21 looped on the canopy 11 , the plurality of pull ropes 21 are arranged at intervals with the plurality of parachute ropes 12 , and the tops of the plurality of pull ropes 21 are fixedly connected to the top of the canopy 11 .

[0030] The adjusting mechanism 3 is provided on the umbrella frame 13 , and is used for retracting and extending the drawstring 21 .

[0031] During use, before the parachute is deployed, the canopy 11, cords 12, and frame 13 are folded or stowed. When the parachute is deployed, the canopy 11 unfolds from its stowed state, allowing air to enter the canopy 11 and generate lift. The multiple cords 12 at the bottom of the canopy 11 pull the frame 13 apart and maintain the shape of the canopy 11. The adjustment mechanism 3 controls the drawstrings 21 for retraction and extension. When the drawstrings 21 are tightened, they exert downward force on the canopy 11, changing its shape and thereby adjusting the air resistance experienced by the parachute.

[0032] In the present invention, the effective projected area of ​​the canopy 11 is controlled by adjusting the extension and retraction of the pull rope 21 by the adjustment mechanism 3, thereby changing the length of the pull rope 21, thereby accurately controlling the air resistance encountered by the parachute, thereby achieving precise adjustment of the descent speed, with a simple structure, low cost and high safety.

[0033] To limit the deflection of the drawstring 21, refer to Figure 1 In a preferred embodiment, the canopy 11 is provided with a limiting component 4 for limiting the position of the pull rope 21.

[0034] During use, when it is necessary to retract and release the pull rope 21 through the adjustment mechanism 3 to control the parachute resistance, the limit assembly 4 ensures that the pull rope 21 maintains a relatively stable position during the movement, thereby achieving accurate control of the parachute resistance and improving the safety and stability of the parachute.

[0035] To limit the deflection of the drawstring 21, refer to Figure 4 In a preferred embodiment, the limiting assembly 4 includes a connecting belt 41 provided on the canopy 11 , the connecting belt 41 is provided with a limiting ring 42 , and the pull rope 21 passes through the limiting ring 42 .

[0036] During use, the stop ring 42 acts as a restraint on the draw cord 21. The inner diameter of the stop ring 42 is slightly larger than the diameter of the draw cord 21, allowing the draw cord 21 to move freely within a certain range without significantly deviating from its intended position, becoming entangled with other components, or interfering with the parachute lines 12. This improves the parachute's stability and reliability, ensuring safe and accurate control of its descent speed and direction.

[0037] To retract and extend the drawstring 21, please refer to Figure 2 In a preferred embodiment, the adjusting mechanism 3 includes a winch 31 provided on the umbrella frame 13 , and the bottom end of the pull rope 21 is wound around the winch 31 .

[0038] During use, when the parachute's resistance needs to be increased, the hoist drum 31 rotates in the direction of the rope reel. As the drum rotates, the bottom end of the pull cord 21 is gradually wound around the drum, tightening the pull cord 21. Tightening the pull cord 21 exerts a downward force on the canopy 11, changing its shape, reducing its surface area or making it more compact, thereby increasing the parachute's air resistance and slowing its descent.

[0039] When the parachute's drag needs to be reduced, the hoist drum 31 rotates in the direction of the rope release. The drawstring 21 is gradually unwound from the drum, becoming loose. Loosening the drawstring 21 reduces the downward pull on the canopy 11, restoring it to a more relaxed state. This increases the canopy's surface area or expands its shape, thereby reducing the parachute's air resistance and accelerating its descent. By retracting and releasing the drawstring 21 via the hoist 31, this adjustment mechanism 3 enables precise control of the parachute's drag, improving the safety and operability of the parachute during descent.

[0040] To improve the strength and wear resistance of the pull cord 21, please refer to Figure 3 In a preferred embodiment, the pull rope 21 includes a rope core 211 and a rope loop 212 arranged on the outside of the rope core 211, and the rope core 211 is formed by twisting a plurality of rope bodies 2111.

[0041] During use, multiple ropes 2111 are twisted together to form a rope core 211. This structure provides the rope core 211 with high strength. During the use of the parachute, the draw cord 21 needs to withstand a large pulling force. The twisted ropes 2111 can share the pulling force and prevent the draw cord 21 from easily breaking. The rope loop 212 is wrapped around the outside of the rope core 211 to protect the rope core 211. During the use of the parachute, the draw cord 21 may rub against or collide with other objects or be affected by the external environment. The rope loop 212 prevents the rope core 211 from being directly damaged by these external forces, thereby extending the service life of the draw cord 21.

[0042] In order to reduce the friction between the pull rope 21 and the umbrella canopy 11, please refer to Figure 1 In a preferred embodiment, the canopy 11 is provided with an oil injection assembly 5 for applying lubricating oil to the pull rope 21.

[0043] When in use, the oil injection assembly 5 on the canopy 11 reduces the friction between the drawstring 21 and other components by applying lubricating oil to the drawstring 21, thereby protecting the drawstring 21 and improving the efficiency and reliability of the parachute resistance control.

[0044] To fill the draw cord 21 with oil, refer to Figure 5In a preferred embodiment, the oil filling assembly 5 includes an oil storage chamber 51 provided on the canopy 11, an oil guide ring 52 on the oil storage chamber 51, the outlet of the oil storage chamber 51 is connected to the inlet of the oil guide ring 52, the pull rope 21 passes through the oil guide ring 52, and a plurality of oil application ports 53 are provided in the oil guide ring 52.

[0045] During use, the lubricating oil in the oil reservoir 51 begins to flow toward the outlet under the influence of gravity or pressure. Since the outlet of the oil reservoir 51 is connected to the inlet of the oil guide ring 52, the lubricating oil smoothly enters the oil guide ring 52. The lubricating oil builds up a certain pressure inside the oil guide ring 52, preparing to flow out through the oiling port 53. As the parachute moves, the drawstring 21 passes through the oil guide ring 52.

[0046] The position and motion of the drawstring 21 maintain a stable relative position to the oil guide ring 52, ensuring effective contact with the oil application ports 53. The lubricating oil within the oil guide ring 52 flows out through the multiple oil application ports 53. The distribution of these ports ensures that the lubricating oil is evenly applied around the drawstring 21, achieving a comprehensive lubrication effect. Once the lubricating oil is sprayed out of the oil application ports 53, it quickly adheres to the surface of the drawstring 21, forming a thin oil film. This oil film reduces the friction coefficient between the drawstring 21 and other components, reducing wear and heat generation, thereby increasing the service life of the drawstring 21 and the efficiency of the parachute's drag control.

[0047] In order to reduce the friction between the pull rope 21 and the oil guide ring 52, please refer to Figure 5 In a preferred embodiment, an oiling ball 54 is rotatably connected to the oiling port 53 , and the oiling ball 54 is partially located inside the oil guide ring 52 and partially located outside the oil guide ring 52 . The oiling ball 54 abuts against the pull rope 21 .

[0048] During use, lubricating oil flows from the outlet of the oil reservoir 51 into the inlet of the oil guide ring 52, building up a certain pressure within the oil guide ring 52. The lubricating oil fills the interior of the oil guide ring 52 and gradually approaches the oil ball 54. As the lubricating oil flows through the oil guide ring 52, it contacts the portion of the oil ball 54 located within the oil guide ring 52. Because the oil ball 54 is rotatably connected to the oiling port 53, it can rotate freely. When the lubricating oil contacts the oil ball 54, a film of oil forms on its surface.

[0049] The portion of the oil ball 54 located outside the oil guide ring 52 is subject to friction from the drawstring 21 due to contact with the drawstring 21, causing the oil ball 54 to rotate. This rotation not only distributes the lubricant more evenly across its surface, but also allows the oil ball 54 to better adapt to the movement of the drawstring 21. As the oil ball 54 rotates, the lubricant on its surface is continuously carried to the area in contact with the drawstring 21.

[0050] Because the oiling ball 54 abuts the drawstring 21, as it rotates, lubricating oil is evenly applied to the surface of the drawstring 21. This rotation continuously provides lubricating oil to the drawstring 21, ensuring that the drawstring 21 remains well lubricated throughout the parachute's descent. Furthermore, the rotation of the oiling ball 54 adapts to the varying speeds and directions of the drawstring 21, improving the effectiveness and stability of the lubrication process. As long as there is lubricating oil in the oil reservoir 51, pressure within the oil guide ring 52 remains constant, and the oiling ball 54 continuously draws lubricating oil from the oil guide ring 52 and applies it to the drawstring 21.

[0051] To improve the uniformity of lubricant application, please refer to Figure 5 In a preferred embodiment, the oiling port 53 is slidably connected to an oil guide pipe 55, the oiling port 53 is communicated with the inlet of the oil guide pipe 55, the oiling ball 54 is rotatably connected to the end of the oil guide pipe 55, the oiling ball 54 is partially located inside the oil guide pipe 55, and partially located outside the oil guide pipe 55, the oil guide pipe 55 is sleeved with a spring 56, one end of the spring 56 is connected to the oil guide pipe 55, and the other end of the spring 56 is connected to the oil guide ring 52, the spring 56 is in a compressed state, and the spring 56 causes the oil guide pipe 55 to have a tendency to slide toward the pull rope 21.

[0052] During use, the compressed state of spring 56 causes oil guide tube 55 to constantly slide toward drawstring 21. When the distance between drawstring 21 and oil ball 54 changes slightly, oil guide tube 55, under the action of spring 56, will make minute sliding adjustments to ensure better contact between oil ball 54 and drawstring 21. Through the synergistic effect of the slidable oil guide tube 55, the rotatably connected oil ball 54, and the compressed spring 56, this oiling assembly 5 can more flexibly adapt to the movement of drawstring 21, achieving uniform and continuous lubrication of the drawstring 21 and improving the performance and reliability of the parachute.

[0053] To improve the oiling effect, please refer to Figure 5 In a preferred embodiment, a plurality of oil storage grooves 57 are provided on the surface of the oil-coated ball 54 .

[0054] When in use, the multiple oil storage tanks on the surface of the oiling ball 54 can store lubricating oil, and achieve continuous and uniform oiling when the pull rope 21 contacts the oiling ball 54, thereby improving the oiling effect and stability of the oil filling assembly 5, helping to reduce the friction between the pull rope 21 and other components, and improving the performance and reliability of the parachute.

[0055] In order to better understand the present invention, the following Figure 1 - Figure 5The operating principle of the device for controlling parachute drag, a technical solution of the present invention, is described in detail. When the parachute is unopened, the canopy 11, lines 12, and frame 13 are folded or stowed. When the parachute is deployed, the canopy 11 unfolds from its stowed state, allowing air to enter the canopy 11 and generate lift. The lines 12 at the bottom of the canopy 11 pull the frame 13 apart and maintain the shape of the canopy 11. The adjustment mechanism 3 controls the drawstrings 21 for retraction and extension. Tightening the drawstrings 21 exerts a downward force on the canopy 11, changing its shape and thereby adjusting the air resistance experienced by the parachute.

[0056] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A device for controlling parachute drag, characterized in that: include: A parachute mechanism, the parachute mechanism comprising a canopy, a plurality of parachute ropes being provided around the bottom of the canopy, and a parachute frame being provided at the bottom of the plurality of parachute ropes; A resistance control mechanism, the resistance control mechanism comprising a plurality of pull ropes looped around the canopy, the plurality of pull ropes being arranged at intervals with the plurality of parachute lines, the tops of the plurality of pull ropes being fixedly connected to the top of the canopy; An adjustment mechanism, the adjustment mechanism being provided on the umbrella frame and being used for retracting and releasing the drawstring; An oil injection component for applying lubricating oil to the pull rope is provided on the canopy.

2. A device for controlling parachute resistance according to claim 1, characterized in that: The canopy is provided with a limiting component for limiting the position of the pull rope.

3. A device for controlling parachute resistance according to claim 2, characterized in that: The limiting assembly includes a connecting belt arranged on the umbrella canopy, the connecting belt is provided with a limiting ring, and the pull rope passes through the limiting ring.

4. A device for controlling parachute resistance according to claim 1, characterized in that: The adjusting mechanism comprises a winch arranged on the umbrella frame, and the bottom end of the pull rope is wound on the winch.

5. The device for controlling parachute resistance according to claim 1, characterized in that: The pull rope comprises a rope core and a rope loop arranged outside the rope core, and the rope core is formed by twisting a plurality of rope bodies.

6. The device for controlling parachute resistance according to claim 1, characterized in that: The oil filling assembly includes an oil storage chamber provided on the canopy, and the oil storage chamber also includes an oil guide ring. The outlet of the oil storage chamber is connected to the inlet of the oil guide ring. The pull rope passes through the oil guide ring, and a plurality of oil application ports are provided in the oil guide ring.

7. A device for controlling parachute resistance according to claim 6, characterized in that: An oiling ball is rotatably connected in the oiling port. Part of the oiling ball is located inside the oil guide ring and part is located outside the oil guide ring. The oiling ball abuts against the pull rope.

8. A device for controlling parachute resistance according to claim 7, characterized in that: The oil application port is slidably connected to an oil guide pipe, and the oil application port is communicated with the inlet of the oil guide pipe. The oil application ball is rotatably connected to the end of the oil guide pipe. The oil application ball is partially located inside the oil guide pipe and partially located outside the oil guide pipe. A spring is provided on the oil guide pipe, one end of the spring is connected to the oil guide pipe, and the other end of the spring is connected to the oil guide ring. The spring is in a compressed state, and the spring causes the oil guide pipe to have a tendency to slide toward the direction of the pull rope.

9. The device for controlling parachute resistance according to claim 7, characterized in that: A plurality of oil storage grooves are provided on the surface of the oil-coated ball.

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