Parachute landing airfoil simulation platform

Abstract

The utility model relates to the technical field of parachuting training, in particular to a parachuting off-aircraft simulation platform. A pneumatic spring is arranged above a separation rod of the platform, a trainee enters a fixed frame, steps on a pedal frame and carries a suspension strap on the body, a lifting mechanism drives a lifting bottom plate and the pedal frame to ascend, after the specified height is reached, the lifting bottom plate descends, and under the action of the pedal frame, the trainee is suspended in the air to simulate a parachuting environment, and at the moment of parachuting, the trainee is suspended in the air to simulate the parachuting environment. When the pedal frame descends, the pneumatic spring is stretched in the descending process, the pneumatic spring exerts reverse acting force on the pedal frame, the descending speed of the pedal frame is reduced, and the problems that collision noise is large and equipment is prone to being damaged due to the too high descending speed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of parachuting training, in particular to a parachute-dropping and leaving-aircraft simulation platform. Background Art

[0002] Skydiving is an important way to safely land on the ground after detaching from an aircraft in mid-air. Skydiving ground training has always been an important part of the core skill training for parachuting professionals and the aviation life-saving skill training for flight trainees. For new skydivers who have completed ground basic training and are about to perform actual jumps from airplanes, they need to experience a realistic air landing process through simulation training, solidify their landing posture and aerial maneuvers, and avoid the feeling of weightlessness during actual skydiving, the visual impact of rapid descent, and the spatial perception disorder induced by changes in body position in the air, which can stimulate the skydivers to have negative emotions such as fear and tension, and induce wrong actions. Skydiving is a highly dangerous activity. If special circumstances occur or the correct procedures are not followed, skydivers are often injured or killed. In addition, when organizing actual skydiving training, logistics support is difficult, time-consuming, and costly, and it is also subject to restrictions on site and weather conditions.

[0003] The existing announcement number: CN 220420088 U is a "helicopter skydiving simulation platform" that can effectively simulate the real skydiving process, improve training efficiency, and reduce the occurrence of dangers and accidents. However, it is found during use that at the moment of skydiving, the pedal frame of the simulation platform naturally falls down. When it falls to the lowest starting point, it has a fast descent speed, causing a large impact force on the components below, which is easy to cause damage to the equipment, accompanied by a large collision noise. Utility Model Content

[0004] The utility model aims to solve the above problems, thereby providing a parachute landing simulation platform which is not restricted by site and weather conditions.

[0005] The utility model solves the above problems and adopts the following technical solutions:

[0006] A parachute landing simulation platform comprises a fixed frame, an operating frame is arranged on the top of the fixed frame, a sliding plate is slidably connected to the top of the bottom surface of the operating frame, a rotating mechanism is arranged between the sliding plate and the operating frame, an operating hole is opened on the bottom surface of the operating frame and below the sliding plate, a hanging strap is arranged in the fixed frame and below the operating hole, a lifting mechanism is arranged on the sliding plate, a connecting plate connected to the lifting mechanism is arranged at the bottom of the operating hole, the top of the hanging strap is respectively connected to the bottom of the connecting plate, a leg lifting mechanism is arranged at the top of the back side of the fixed frame, and a lifting bottom plate is arranged at the bottom of the fixed frame; the lifting bottom plate comprises a movable bottom plate located in the fixed frame, a dividing rod is horizontally arranged at the middle of the side surface of the fixed frame, and a partition rod is arranged at the side surface of the fixed frame and at the bottom of the connecting plate. A slide is longitudinally arranged below the dividing rod, a sliding block used in conjunction with the slide is arranged on the side of the movable bottom plate, two square tubes are longitudinally arranged on the front and rear sides of each side of the fixed frame and above the dividing rod, a fourth motor is fixed on the back side of the inner cavity of the operating frame, a second rotating shaft is mounted on the output end of the fourth motor, a supporting seat is arranged between the second rotating shaft and the operating frame, the second rotating shaft is rotatably connected to the supporting seat, third reels are respectively mounted on the second rotating shaft near the fourth motor and away from the fourth motor, two third steel ropes are wound around each third reel, a second pulley is arranged in the operating frame and above the square tube, the two third steel ropes respectively pass around the second pulley and pass through the bottom plate of the operating frame and the square tube and are connected to the movable bottom plate.

[0007] It also includes a pedal frame located at the top of the movable bottom plate, a buffer block is arranged at the top of the lifting bottom plate, a first fixed plate is arranged at the bottom of the partition rod, connecting columns are respectively longitudinally fixed at the four corners of the bottom of the first fixed plate, a second fixed plate is movably passed through the connecting columns, a limit block is arranged at the bottom of the connecting columns, a buffer spring is sleeved on the connecting columns and located between the first fixed plate and the second fixed plate, an electromagnetic block is fixed at the bottom of the second fixed plate, and metal ear plates used in conjunction with the electromagnetic block are arranged on both sides of the top of the pedal frame;

[0008] Pneumatic springs for slowly lowering the pedal frame are arranged above the ends of the dividing rods. A steel wire rope is connected to the piston rod ends of the pneumatic springs. The other end of the steel wire rope passes downward through the dividing rods and is connected to the pedal frame. When the pedal frame falls above the movable bottom plate under its own gravity, the pneumatic spring is gradually stretched.

[0009] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0010] The trainee enters the fixed frame and steps on the pedal frame, carrying the suspension strap on his back. The lifting mechanism drives the lifting base plate and the pedal frame to rise. After reaching the specified height, the lifting base plate descends. Under the action of the pedal frame, the trainee is suspended in the air to simulate the skydiving environment. At the moment of skydiving, the electromagnetic block loses power and disconnects from the metal ear plate, and the pedal frame descends. During the landing, the pneumatic spring is stretched, and the pneumatic spring gives the pedal frame a reverse force to slow down the descent speed of the pedal frame to prevent the descent speed from being too fast, resulting in loud collision noise and easy damage to the equipment.

[0011] As a preferred embodiment, a further technical solution of the utility model is:

[0012] An air pump is arranged on the upright column on the front side of the operation frame, and an air outlet pipe is arranged on the output end of the air pump.

[0013] The rotating mechanism includes a first gear fixed at the top center of the sliding plate, a support frame is fixed to the bottom of the top surface of the operating frame, a first motor is fixed on the support frame, a second gear is mounted on the output end of the first motor, the first gear is meshed with the second gear, and legs are respectively provided at the bottom of the sliding plate, a ball is embedded in the bottom of the leg, and a circular slideway used in conjunction with the ball is opened on the top of the bottom surface of the operating frame.

[0014] Wire pulling controllers for controlling the forward and reverse rotation of the first motor are respectively arranged on both sides of the bottom of the connecting plate and near the back side.

[0015] The lifting mechanism includes two first rotating shafts spanning the sliding plate, a fixed seat is arranged between the first rotating shaft and the sliding plate, the first rotating shaft and the fixed seat are rotatably connected, both ends of the first rotating shaft extend out of the sliding plate and are fixed with a first drum, a third gear is mounted on the middle of the first rotating shaft, second motors are respectively arranged on both sides of the top of the sliding plate, a fourth gear is mounted on the output shaft of the second motor, a chain is jointly mounted on the third gear and the adjacent fourth gear, a first steel wire rope is respectively wound around the first drum, and one end of the first steel wire rope is respectively connected to the four corners of the top of the connecting plate.

[0016] The leg lifting mechanism includes a third motor fixed to the top of the back side of the fixed frame, a second drum is mounted on the output end of the third motor, a second steel wire rope is wound around the second drum, a first pulley is arranged on the bottom periphery of the operating hole and close to the side of the second drum, the output end of the second steel wire rope passes around the first pulley and is connected to a ring for being put on the leg of the parachutist.

[0017] The middle part of the top surface of the pedal frame is an open structure and is provided with a cover plate, and a vibration motor is fixed at the bottom of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of an embodiment of the utility model;

[0019] Figure 2 It is a side view structural diagram of the fixed frame of the embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of a cross-sectional structure of an operation frame in a top view according to an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the top view of the movable bottom plate of the utility model embodiment;

[0022] Figure 5 This is a schematic diagram of the top view of the pedal frame of an embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the side cross-sectional structure of the pedal frame of an embodiment of the utility model;

[0024] Marked in the figure: fixed frame 1, operating frame 2, sliding plate 3, operating hole 4, hanging strap 5, connecting plate 6, air pump 7, air outlet pipe 8, first gear 9, support frame 10, first motor 11, second gear 12, leg 13, circular slide 14, wire pull controller 15, first rotating shaft 16, first drum 17, third gear 18, second motor 19, fourth gear 20, first steel wire rope 21, third motor 22, second drum 23, second steel wire rope 24, collar 25, movable bottom plate 26, dividing rod 27, slide 28, square tube 29, fourth motor 30, second rotating shaft 31, vibration motor 32, third drum 33, third steel wire rope 34, pedal frame 35, buffer block 36, first fixed plate 37, connecting column 38, buffer spring 39, second fixed plate 40, electromagnetic block 41, metal ear plate 42, cover plate 43, slider 44, pneumatic spring 45. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0026] A parachute landing simulation platform comprises a fixed frame 1, the fixed frame 1 comprises two rectangular frames as a top surface and a bottom surface, four columns are arranged between the top surface and the bottom surface, an operation frame 2 is arranged on the top of the fixed frame 1, a sliding plate 3 is slidably connected to the top of the bottom surface of the operation frame 2, a rotating mechanism is arranged between the sliding plate 3 and the operation frame 2, an operation hole 4 is opened on the bottom surface of the operation frame 2 and below the sliding plate 3, the length of the sliding plate 3 is greater than the diameter of the operation hole 4, the width of the sliding plate 3 is less than the diameter of the operation hole 4, and a suspension is arranged in the fixed frame 1 and below the operation hole 4 The hanging strap 5 is provided with a lifting mechanism on the sliding plate 3, a connecting plate 6 connected to the lifting mechanism is provided at the bottom of the operating hole 4, the top of the hanging strap 5 is respectively connected to the bottom of the connecting plate 6, a leg lifting mechanism is provided at the top of the back side of the fixed frame 1, and a lifting bottom plate is provided at the bottom of the fixed frame 1, and the lifting bottom plate moves up and down along the fixed frame 1; the lifting bottom plate includes a movable bottom plate 26 located in the fixed frame 1, a partition rod 27 is horizontally provided in the middle of the side of the fixed frame 1, and the partition rod 27 is located between the middle of the two adjacent front and rear columns, and the side of the fixed frame 1 A slide 28 is longitudinally arranged below the partition rod 27, and the slide 28 is groove-shaped and opens inward. A slider 44 used in conjunction with the slide 28 is arranged on the side of the movable bottom plate 26. Two square tubes 29 are longitudinally arranged on the front and rear sides of each side of the fixed frame 1 and above the partition rod 27. A fourth motor 30 is fixed to the back side of the inner cavity of the operating frame 2. A second rotating shaft 31 is mounted on the output end of the fourth motor 30. The second rotating shaft 31 is perpendicular to the front and back sides of the operating frame 2. A support seat is arranged between the second rotating shaft 31 and the operating frame 2. The second rotating shaft 31 is rotatably connected to the support seat, and the second rotating shaft 31 is respectively provided with a third reel 33 at a position close to the fourth motor 30 and far away from the fourth motor 30, and two third steel wire ropes 34 are wound around each third reel 33, and a second pulley is provided in the operating frame 2 and above the square tube 29, and the two third steel wire ropes 34 respectively bypass the second pulley and penetrate the bottom plate of the operating frame 2 and the square tube 29 and are connected to the movable bottom plate 26, and the operation of the fourth motor 30 drives the four steel wire ropes to move synchronously, thereby driving the movable bottom plate 26 to drive the trainer to move up and down along the slideway 28;

[0027] The utility model also comprises a pedal frame 35 located at the top of the movable bottom plate 26, the pedal frame 35 is a hollow box structure, a buffer block 36 is arranged at the top of the lifting bottom plate, a first fixing plate 37 is arranged at the bottom of the partition rod 27, connecting columns 38 are respectively longitudinally fixed at the four corners at the bottom of the first fixing plate 37, a second fixing plate 40 is movably penetrated through the connecting column 38, a limiting block is arranged at the bottom of the connecting column 38, a buffer spring 39 is sleeved on the connecting column 38 and located between the first fixing plate 37 and the second fixing plate 40, an electromagnetic block 41 is fixed at the bottom of the second fixing plate 40, and metal ear plates 42 used in conjunction with the electromagnetic block 41 are arranged on both sides of the top of the pedal frame 35, and the operator is located above the pedal frame 35, and the movable bottom plate 26 drives the pedal frame 35 to move upward to lift the operator to mid-air, and when the electromagnetic block 41 contacts the metal ear plate 42 and is energized, the movable bottom plate 26 falls, and the pedal frame 35 is adsorbed in mid-air, providing a foothold for the operator before parachuting;

[0028] Pneumatic springs are provided above the ends of the partition rods for slowly lowering the pedal frame. A steel wire rope is connected to the piston rod end of the pneumatic spring. The other end of the steel wire rope passes through the partition rod downward and is connected to the pedal frame. When the pedal frame falls above the movable bottom plate under its own gravity, the pneumatic spring is gradually stretched.

[0029] Pneumatic springs 45 for slowly lowering the pedal frame 35 are provided above the ends of the partition rods 27. The piston rod ends of the pneumatic springs 45 are connected with steel wire ropes, and the other ends of the steel wire ropes pass downward through the partition rods 27 and are connected with the pedal frame 35. When the pedal frame 35 falls on the movable bottom plate 26 under its own gravity, the pneumatic springs 45 are in a stretched state; when the pedal frame 35 is lifted to a specified height, the pneumatic springs 45 are gradually stretched, simulating the moment of skydiving, the electromagnetic block 41 and the metal ear plate 42 are de-energized, and the pedal frame 35 descends. During the descent, the pneumatic springs 45 are gradually stretched, and the pneumatic springs 45 give the pedal frame 35 a reverse force to slow down the descent speed of the pedal frame 35.

[0030] An air pump 7 is arranged on the column on the front side of the operating frame 2, and an air outlet pipe 8 is arranged on the output end of the air pump 7. The air outlet pipe 8 is arranged in an L shape. The air pump 7 and the air outlet pipe 8 are located on the inner side of the column on the front side. A support plate is arranged at the corner of the air outlet pipe 8. Air is sprayed toward the operator through the air outlet pipe 8 to simulate the wind environment during skydiving.

[0031] The rotating mechanism includes a first gear 9 fixed at the top center of the sliding plate 3, a support frame 10 is fixed to the bottom of the top surface of the operating frame 2, a first motor 11 is fixed to the support frame 10, the output end of the first motor 11 is downward, and a second gear 12 is mounted on the output end of the first motor 11, the first gear 9 is meshed with the second gear 12, and the bottom of the sliding plate 3 is respectively provided with legs 13, and a ball is embedded in the bottom of the leg 13. A circular slide 14 for use with the ball is provided on the top of the bottom surface of the operating frame 2, and the circular slide 14 is located on the periphery of the operating hole 4 and is concentric with the operating hole 4. The first motor 11 drives the second gear 12 to drive the first gear 9 to rotate, thereby driving the sliding plate 3 to rotate along the circular slide 14.

[0032] A wire pulling controller 15 for controlling the forward and reverse rotation of the first motor 11 is respectively provided on both sides of the bottom of the connecting plate 6 and near the back side. The direction is controlled by pulling the pull ring of the wire pulling controller 15 .

[0033] The lifting mechanism includes two first rotating shafts 16 spanning the sliding plate 3, the first rotating shaft 16 is arranged along the width direction of the sliding plate 3 and the length is greater than the width of the sliding plate 3, a fixed seat is arranged between the first rotating shaft 16 and the sliding plate 3, the first rotating shaft 16 is rotatably connected with the fixed seat, both ends of the first rotating shaft 16 extend out of the sliding plate 3 and are fixed with a first reel 17, the first reel 17 is located above the operating hole 4, the middle part of the first rotating shaft 16 is provided with a third gear 18, second motors 19 are respectively provided on both sides of the top of the sliding plate 3, a fourth gear 20 is provided on the output shaft of the second motor 19, and a chain is commonly provided on the third gear 18 and the adjacent fourth gear 20, and a first steel wire rope 21 is respectively wound around the first reel 17, one end of the first steel wire rope 21 is respectively connected to the four corners of the top of the connecting plate 6, the second motor 19 drives the fourth gear 20 and then drives the third gear 18 through the chain, and the third gear 18 drives the first rotating shaft 16 to rotate and controls the lifting of the connecting plate 6 through the first steel wire rope 21.

[0034] The leg lifting mechanism includes a third motor 22 fixed to the top of the back side of the fixed frame 1, a second drum 23 is mounted on the output end of the third motor 22, a second steel wire rope 24 is wound around the second drum 23, a first pulley is provided on the bottom periphery of the operating hole 4 and close to the side of the second drum 23, the output end of the second steel wire rope 24 passes around the first pulley and is connected to a ring 25 for being put on the leg of the parachutist, the ring 25 is put on the leg of the operator, the third motor 22 drives the second drum 23 to rotate, and then drives the ring 25 to drag the operator's leg, so that the operator's body tilts, simulating the parachuting process.

[0035] The middle part of the top surface of the pedal frame 35 is an open structure and a cover plate 43 is placed on it. A vibration motor 32 is fixed to the bottom of the cover plate 43. The operator is located above the cover plate 43, and the movable bottom plate 26 drives the pedal frame 35 to move upward. When the electromagnetic block 41 contacts the metal ear plate 42 and is energized, the movable bottom plate 26 descends, and the pedal frame 35 is adsorbed in mid-air. The vibration motor 32 drives the cover plate 43 to start vibrating, imitating the vibration of the helicopter cabin, making the simulation effect more realistic.

[0036] The trainee enters the fixed frame and steps on the pedal frame, carrying the suspension strap on his back, and the lifting mechanism drives the lifting base and the pedal frame to rise. After reaching the specified height, the lifting base descends. Under the action of the pedal frame, the trainee is suspended in the air to simulate the skydiving environment. At the moment of skydiving, the electromagnetic block and the metal ear plate are powered off, and the pedal frame descends. During the landing, the pneumatic spring is gradually stretched. The pneumatic spring has a nearly linear elastic curve. Therefore, the lower the height to which the pedal frame descends, the greater the reaction force it receives, and the more obvious the speed reduction. Finally, the speed of the pedal frame landing above the lifting base is very slow, which effectively solves the problem of high collision noise and fragile equipment caused by excessive descent speed.

[0037] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A parachute landing simulation platform, comprising a fixed frame, an operating frame is arranged on the top of the fixed frame, a sliding plate is slidably connected to the top of the bottom surface of the operating frame, a rotating mechanism is arranged between the sliding plate and the operating frame, an operating hole is opened on the bottom surface of the operating frame and below the sliding plate, a hanging strap is arranged in the fixed frame and below the operating hole, a lifting mechanism is arranged on the sliding plate, a connecting plate connected to the lifting mechanism is arranged at the bottom of the operating hole, the top of the hanging strap is respectively connected to the bottom of the connecting plate, a leg lifting mechanism is arranged at the top of the back side of the fixed frame, and a lifting bottom plate is arranged at the bottom of the fixed frame, characterized in that: The lifting base plate includes a movable base plate located in a fixed frame, a partition rod is horizontally arranged in the middle of a side surface of the fixed frame, a slideway is longitudinally arranged on a side surface of the fixed frame and below the partition rod, a slider used in conjunction with the slideway is arranged on the side surface of the movable base plate, two square tubes are longitudinally arranged on the front and rear sides of each side surface of the fixed frame and above the partition rod, a fourth motor is fixed to the back side of the inner cavity of the operating frame, a second rotating shaft is mounted on the output end of the fourth motor, a support seat is arranged between the second rotating shaft and the operating frame, the second rotating shaft is rotatably connected to the support seat, a third drum is respectively mounted on the second rotating shaft near the fourth motor and away from the fourth motor, two third steel ropes are wound around each third drum, a second pulley is arranged in the operating frame and above the square tube, the two third steel ropes respectively pass around the second pulley and pass through the bottom plate of the operating frame and the square tube and are connected to the movable base plate; It also includes a pedal frame located at the top of the movable bottom plate, a buffer block is arranged at the top of the lifting bottom plate, a first fixed plate is arranged at the bottom of the partition rod, connecting columns are respectively longitudinally fixed at the four corners of the bottom of the first fixed plate, a second fixed plate is movably passed through the connecting columns, a limit block is arranged at the bottom of the connecting columns, a buffer spring is sleeved on the connecting columns and located between the first fixed plate and the second fixed plate, an electromagnetic block is fixed at the bottom of the second fixed plate, and metal ear plates used in conjunction with the electromagnetic block are arranged on both sides of the top of the pedal frame; Pneumatic springs for slowly lowering the pedal frame are arranged above the ends of the dividing rods. A steel wire rope is connected to the piston rod ends of the pneumatic springs. The other end of the steel wire rope passes downward through the dividing rods and is connected to the pedal frame. When the pedal frame falls above the movable bottom plate under its own gravity, the pneumatic spring is gradually stretched.

2. The parachute landing simulation platform according to claim 1, characterized in that: An air pump is arranged on the upright column on the front side of the operation frame, and an air outlet pipe is arranged on the output end of the air pump.

3. The parachute landing simulation platform according to claim 1, characterized in that: The rotating mechanism includes a first gear fixed at the top center of the sliding plate, a support frame is fixed to the bottom of the top surface of the operating frame, a first motor is fixed on the support frame, a second gear is mounted on the output end of the first motor, the first gear is meshed with the second gear, and legs are respectively provided at the bottom of the sliding plate, a ball is embedded in the bottom of the leg, and a circular slideway used in conjunction with the ball is opened on the top of the bottom surface of the operating frame.

4. The parachute landing simulation platform according to claim 3, characterized in that: Wire pulling controllers for controlling the forward and reverse rotation of the first motor are respectively arranged on both sides of the bottom of the connecting plate and near the back side.

5. The parachute landing simulation platform according to claim 1, characterized in that: The lifting mechanism includes two first rotating shafts spanning the sliding plate, a fixed seat is arranged between the first rotating shaft and the sliding plate, the first rotating shaft and the fixed seat are rotatably connected, both ends of the first rotating shaft extend out of the sliding plate and are fixed with a first drum, a third gear is mounted on the middle of the first rotating shaft, second motors are respectively arranged on both sides of the top of the sliding plate, a fourth gear is mounted on the output shaft of the second motor, a chain is jointly mounted on the third gear and the adjacent fourth gear, a first steel wire rope is respectively wound around the first drum, and one end of the first steel wire rope is respectively connected to the four corners of the top of the connecting plate.

6. The parachute landing simulation platform according to claim 1, characterized in that: The leg lifting mechanism includes a third motor fixed to the top of the back side of the fixed frame, a second drum is mounted on the output end of the third motor, a second steel wire rope is wound around the second drum, a first pulley is arranged on the bottom periphery of the operating hole and close to the side of the second drum, the output end of the second steel wire rope passes around the first pulley and is connected to a ring for being put on the leg of the parachutist.

7. The parachute landing simulation platform according to claim 1, characterized in that: The middle part of the top surface of the pedal frame is an open structure and is provided with a cover plate, and a vibration motor is fixed at the bottom of the cover plate.

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