Device for controlling parachute resistance

Abstract

The invention discloses a device for controlling parachute resistance, which comprises a parachute mechanism, a resistance control mechanism and an adjusting mechanism, the parachute mechanism comprises a parachute canopy, a plurality of parachute cords are annularly arranged at the bottom of the parachute canopy, and a parachute stand is arranged at the bottoms of the plurality of parachute cords; the resistance control mechanism comprises a plurality of stay cords annularly arranged on the canopy, the stay cords and the parachute cords are arranged at intervals, and the tops of the stay cords are fixedly connected to the top of the canopy; the parachute has the beneficial effects that the length of the pull rope is changed by retracting and releasing the pull rope through the adjusting mechanism, so that the effective projection area of the parachute canopy is controlled, the air resistance borne by the parachute is accurately controlled, accurate adjustment of the descending speed is achieved, and the parachute is convenient to use. The structure is simple, cost is low, and safety is high.

Description

Technical Field

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

[0002] The overload of the parachute opening will exceed the tolerance of the suspended object. At this time, some solutions need to be taken to reduce the overload of the parachute opening to meet the use requirements of the suspended object. The overload of the parachute opening is generally related to the parachute resistance area, the opening speed and the atmospheric density. Therefore, reducing the resistance area of ​​the parachute when opening has become an effective measure to reduce the overload of the parachute opening.

[0003] In the related art, a parachute is proposed, including 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 includes 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 assembly, and the closing assembly includes a winch, a pull rope ring, multiple suspension ropes and multiple pull ropes. Not only is the structure complex and the cost high, but it 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, to provide a device for controlling the resistance of a parachute, and to solve the technical problem of the complex structure of the closing assembly in the prior art.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a device for controlling the resistance of a parachute, comprising a parachute mechanism, wherein the parachute mechanism comprises an umbrella canopy, a plurality of umbrella ropes are arranged around the bottom of the umbrella canopy, and an umbrella frame is arranged at the bottom of the plurality of umbrella ropes; A resistance control mechanism, the resistance control mechanism comprising a plurality of pull ropes looped on the canopy, the plurality of pull ropes being arranged at intervals with the plurality of umbrella ropes, the tops of the plurality of pull ropes being fixedly connected to the top of the canopy; and, The adjusting mechanism is arranged on the umbrella frame and is used for retracting and releasing the draw cord.

[0007] In some embodiments, the canopy is provided with a limiting component for limiting the position of the pull rope.

[0008] In some embodiments, 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.

[0009] In some embodiments, the adjustment mechanism includes a winch disposed on the umbrella frame, and the bottom end of the pull rope is wound on the winch.

[0010] 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.

[0011] In some embodiments, the canopy is provided with an oil injection assembly for applying lubricating oil to the pull rope.

[0012] 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.

[0013] In some embodiments, an oiling ball is rotatably connected in the oiling port, the oiling ball is partially located inside the oil guide ring and partially located outside the oil guide ring, and the oiling ball abuts against the pull rope.

[0014] 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, a spring is sleeved 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 in the direction of the pull rope.

[0015] In some embodiments, a plurality of oil storage grooves are provided on the surface of the oil-coated ball.

[0016] Compared with the prior art, the beneficial effects of the present invention include: by adjusting the mechanism to retract and release the pull rope, thereby changing the length of the pull rope, thereby controlling the effective projection area of ​​the canopy, 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the parachute mechanism, the resistance control mechanism and the regulating mechanism provided by the present invention in the opened state; Figure 2 It is a schematic diagram of the overall structure of the parachute mechanism, the resistance control mechanism and the adjustment mechanism provided by the present invention in a contracted state; Figure 3 is a cross-sectional view of the overall structure of the draw cord provided by the present invention; Figure 4 It is a schematic diagram of the overall structure of the limit assembly provided by the present invention; Figure 5 It is a schematic diagram of the overall structure of the oil injection assembly provided by the present invention.

[0018] Description of reference numerals: 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. Oil application port; 54. Oil application ball; 55. Oil guide pipe; 56. Spring; 57. Oil storage tank. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 used to limit the present invention.

[0020] The present invention provides a device for controlling the resistance of a parachute, 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.

[0021] The parachute mechanism 1 comprises an umbrella canopy 11 , a plurality of umbrella ropes 12 are arranged around the bottom of the umbrella canopy 11 , and an umbrella frame 13 is arranged at the bottom of the plurality of umbrella ropes 12 .

[0022] 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 umbrella ropes 12 , and the tops of the plurality of pull ropes 21 are fixedly connected to the top of the canopy 11 .

[0023] The adjusting mechanism 3 is disposed on the umbrella frame 13 , and the adjusting mechanism 3 is used for retracting and releasing the drawstring 21 .

[0024] When in use, when the parachute is not opened, the canopy 11, the parachute ropes 12 and the parachute frame 13 are in a folded or stored state. When the parachute needs to be used, the canopy 11 is unfolded from the stored state, and air enters the canopy 11 to generate lift. The multiple parachute ropes 12 at the bottom of the canopy 11 pull the parachute frame 13 apart and maintain the shape of the canopy 11, and the pull cord 21 is retracted and released through the adjustment mechanism 3. When the pull cord 21 is tightened, it will generate a downward pulling force on the canopy 11, changing the shape of the canopy 11, thereby adjusting the air resistance of the parachute.

[0025] In the present invention, the effective projection area of ​​the canopy 11 is controlled by adjusting the mechanism 3 to retract and release the pull rope 21, 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.

[0026] To limit the deflection of the pull rope 21, please refer to Figure 1 In a preferred embodiment, a limiting component 4 for limiting the position of the pull rope 21 is provided on the canopy 11.

[0027] 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.

[0028] To limit the deflection of the pull rope 21, please refer to Figure 4 In a preferred embodiment, the limiting assembly 4 includes a connecting belt 41 arranged on the umbrella canopy 11, and a limiting ring 42 is provided on the connecting belt 41, and the pull rope 21 passes through the limiting ring 42.

[0029] When in use, the limit ring 42 will limit the pull rope 21. The inner diameter of the limit ring 42 is slightly larger than the diameter of the pull rope 21, so that the pull rope 21 can move freely within a certain range, but will not deviate significantly from the predetermined position, will not be entangled on other parts or interfere with the parachute line 12. The stability and reliability of the parachute are improved, ensuring that the parachute can safely and accurately control the descent speed and direction.

[0030] To retract and release the pull cord 21, please refer to Figure 2 In a preferred embodiment, the adjusting mechanism 3 includes a winch 31 disposed on the umbrella frame 13 , and the bottom end of the pull rope 21 is wound around the winch 31 .

[0031] When in use, when the resistance of the parachute needs to be increased, the drum of the winch 31 rotates in the direction of the rope collection. The bottom end of the pull rope 21 is gradually wound on the drum as the drum rotates, and the pull rope 21 is tightened. Tightening the pull rope 21 will generate a downward pulling force on the canopy 11, changing the shape of the canopy 11, reducing the surface area of ​​the canopy 11 or making the shape more compact, thereby increasing the air resistance of the parachute and slowing down the descent speed.

[0032] When the resistance of the parachute needs to be reduced, the drum of the winch 31 rotates in the direction of releasing the rope. The pull rope 21 is gradually released from the drum, and the pull rope 21 becomes loose. Loosening the pull rope 21 will reduce the downward pulling force on the canopy 11, so that the canopy 11 returns to a relatively relaxed state, and the surface area of ​​the canopy 11 increases or the shape is more expanded, thereby reducing the air resistance of the parachute and accelerating the descent speed. Through the retracting and releasing operation of the pull rope 21 by the winch 31, this adjustment mechanism 3 can achieve precise control of the resistance of the parachute, and improve the safety and operability of the parachute during the descent process.

[0033] In order 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.

[0034] When in use, multiple rope bodies 2111 are twisted together to form a rope core 211. This structure can make the rope core 211 have higher strength. During the use of the parachute, the pull rope 21 needs to withstand a large pulling force. The twisted rope bodies 2111 can share the pulling force together to prevent the pull rope 21 from breaking easily. 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 pull rope 21 may rub against or collide with other objects or be affected by the external environment. The rope loop 212 can prevent the rope core 211 from being directly damaged by these external forces, thereby extending the service life of the pull rope 21.

[0035] 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.

[0036] 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.

[0037] To fill the pull rope 21 with oil, refer to Figure 5 In 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.

[0038] When in use, the lubricating oil in the oil storage chamber 51 begins to flow toward the outlet under the action of gravity or pressure. Since the outlet of the oil storage chamber 51 is connected to the inlet of the oil guide ring 52, the lubricating oil smoothly enters the oil guide ring 52, and the lubricating oil forms a certain pressure in the oil guide ring 52, ready to flow out through the oil application port 53. As the parachute moves, the pull rope 21 passes through the oil guide ring 52.

[0039] The position and motion state of the pull rope 21 keep it in a stable relative position with the oil guide ring 52, ensuring effective contact with the oil application port 53. The lubricating oil in the oil guide ring 52 flows out through the multiple oil application ports 53. The distribution of the multiple oil application ports 53 can ensure that the lubricating oil is evenly applied around the pull rope 21, achieving an all-round lubrication effect. After the lubricating oil is sprayed out from the oil application port 53, it quickly adheres to the surface of the pull rope 21 to form a thin oil film. This oil film can reduce the friction coefficient between the pull rope 21 and other components, reduce wear and heat generation, and improve the service life of the pull rope 21 and the efficiency of parachute resistance control.

[0040] 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 in the oiling port 53 , and the oiling ball 54 is partially located in the oil guide ring 52 and partially located outside the oil guide ring 52 . The oiling ball 54 abuts against the pull rope 21 .

[0041] When in use, the lubricating oil flows from the outlet of the oil storage chamber 51 into the inlet of the oil guide ring 52, and a certain pressure is formed in the oil guide ring 52. The lubricating oil fills the internal space of the oil guide ring 52 and gradually approaches the oil ball 54. As the lubricating oil flows in the oil guide ring 52, the lubricating oil contacts the portion of the oil ball 54 located in the oil guide ring 52. Since the oil ball 54 is rotatably connected to the oil port 53, the oil ball 54 can rotate freely. When the lubricating oil contacts the oil ball 54, a layer of oil film is formed on the surface of the oil ball 54.

[0042] The part of the oil ball 54 located outside the oil guide ring 52 is subjected to the friction force from the pull rope 21 due to the contact with the pull rope 21, and this friction force causes the oil ball 54 to start rotating. The rotation of the oil ball 54 can make the lubricating oil more evenly distributed on its surface, and on the other hand, it can also make the oil ball 54 better adapt to the movement of the pull rope 21. When the oil ball 54 rotates, the lubricating oil on its surface will be continuously brought to the part in contact with the pull rope 21.

[0043] Since the oiling ball 54 is in contact with the drawstring 21, as the oiling ball 54 rotates, the lubricating oil is evenly applied to the surface of the drawstring 21. The rotation of the oiling ball 54 can continuously provide lubricating oil to the drawstring 21, ensuring that the drawstring 21 can maintain a good lubricated state during the entire parachute descent process. At the same time, the rotation of the oiling ball 54 can also adapt to the movement of the drawstring 21 at different speeds and directions, improving the effect and stability of the oiling. As long as there is lubricating oil in the oil storage chamber 51, the pressure in the oil guide ring 52 will continue to exist, and the oiling ball 54 will continuously obtain lubricating oil from the oil guide ring 52 and apply it to the drawstring 21.

[0044] To improve the uniformity of lubricant application, please refer to Figure 5 In a preferred embodiment, the oil application port 53 is slidably connected with an oil guide pipe 55, the oil application port 53 is communicated with the inlet of the oil guide pipe 55, the oil application ball 54 is rotatably connected to the end of the oil guide pipe 55, the oil application 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 makes the oil guide pipe 55 have a tendency to slide toward the pull rope 21.

[0045] When in use, the compressed state of the spring 56 makes the oil guide tube 55 always tend to slide toward the direction of the drawstring 21. When the distance between the drawstring 21 and the oil ball 54 changes slightly, the oil guide tube 55 will make a slight sliding adjustment under the action of the spring 56 to ensure that the oil ball 54 can better contact the drawstring 21. Through the synergistic effect of the slidable oil guide tube 55, the rotatably connected oil ball 54 and the compressed spring 56, the oil injection assembly 5 can more flexibly adapt to the movement of the drawstring 21, achieve uniform and continuous lubrication of the drawstring 21, and improve the performance and reliability of the parachute.

[0046] 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 .

[0047] When in use, the multiple oil storage grooves 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 oiling assembly 5, helping to reduce the friction between the pull rope 21 and other components, and improving the performance and reliability of the parachute.

[0048] In order to better understand the present invention, the following Figure 1 - Figure 5The working principle of the device for controlling the resistance of a parachute according to the technical solution of the present invention is described in detail: when the parachute is not opened, the canopy 11, the parachute rope 12 and the parachute frame 13 are in a folded or stored state. When the parachute needs to be used, the canopy 11 is unfolded from the stored state, and air enters the canopy 11 to generate lift. The multiple parachute ropes 12 at the bottom of the canopy 11 pull the parachute frame 13 apart and maintain the shape of the canopy 11, and the pull cord 21 is retracted and released through the adjustment mechanism 3. When the pull cord 21 is tightened, a downward pulling force is generated on the canopy 11, changing the shape of the canopy 11, thereby adjusting the air resistance of the parachute.

[0049] The specific implementation of the present invention described above does not constitute a limitation on the protection scope 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 protection scope of the claims of the present invention.

Claims

1. A device for controlling the drag of a parachute, characterized in that: include: A parachute mechanism, the parachute mechanism comprising an umbrella canopy, a plurality of umbrella ropes are arranged around the bottom of the umbrella canopy, and an umbrella frame is arranged at the bottom of the plurality of umbrella ropes; A resistance control mechanism, the resistance control mechanism comprising a plurality of pull ropes looped on the canopy, the plurality of pull ropes being arranged at intervals with the plurality of umbrella ropes, the tops of the plurality of pull ropes being fixedly connected to the top of the canopy; and, The adjusting mechanism is arranged on the umbrella frame and is used for retracting and releasing the draw cord.

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 comprises a connecting belt arranged on the 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. A 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. A device for controlling parachute resistance according to claim 1, characterized in that: The canopy is provided with an oil injection assembly for applying lubricating oil to the pull rope.

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

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

9. A device for controlling the drag of a parachute according to claim 8, characterized in that: The oil application port is slidably connected with 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 in the oil guide pipe and partially located outside the oil guide pipe. A spring is sleeved 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 makes the oil guide pipe tend to slide in the direction of the pull rope.

10. A device for controlling the drag of a parachute according to claim 8, characterized in that: A plurality of oil storage grooves are arranged on the surface of the oil-coated ball.

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