Polygonal parachute landing control training simulation device

Abstract

The utility model relates to a polygonal parachute landing operation training simulation device which comprises at least four stand columns and at least four cross beams with guide rails, the cross beams are sequentially connected end to end to form a closed polygon, and the tops of the stand columns are fixedly matched with the connecting positions of the adjacent cross beams in a supporting mode. Wherein at least one connecting beam with a guide rail is arranged between one group of parallel cross beams, and two ends of the connecting beam are fixed on the corresponding cross beams. According to the polygonal parachute landing control training simulation device, the cross beams and the connecting beams are provided with the guide rails, the cross beams and the connecting beams are provided with the parachute landing control training simulation units capable of doing motion along the guide rails, the connecting beams are arranged between one set of parallel cross beams, and therefore training personnel can train on the device at the same time; under the condition that the same number of personnel are trained, the occupied area of the device is greatly reduced.

Description

Technical Field

[0001] The utility model patent relates to the field of parachuting training, in particular to a polygonal parachute landing control training simulation device. Background Art

[0002] Parachuting, also known as air dropping or parachute landing, is both a sport and a military activity. Operations such as parachutists adjusting their directions, moving laterally, and closing the ventilation openings of the parachute packs during landing can adjust directions, avoid obstacles, prevent parachutists from colliding with each other, and adjust the landing points. These operations are all important for the safety of parachutists and often require simulation training on the ground. Only when the operations are proficient can one avoid panic and mistakes in the air and prevent parachuting accidents.

[0003] For the air dropping simulation close to the real scenario, the following actions are mainly simulated: 1. Pull the control rod at the left rear to simulate the parachute pack turning to the left, and pull the control rod at the right rear to simulate the parachute pack turning to the right; 2. Pull a group of control rods at the right front and the left rear simultaneously to simulate the parachute pack accelerating to turn to the left, and pull a group of control rods at the left front and the right rear simultaneously to simulate the parachute pack accelerating to turn to the right; 3. The lower the control rod is pulled down, the faster the simulated turning speed of the parachute pack. When pulling the control rods at the two rear corners simultaneously, the parachute pack does not turn, which is used to simulate the braking action during landing; 4. Pull the control belt for controlling lateral movement on one side of the parachute pack, and the parachute pack moves laterally to the side of the control belt; 5. Pull a control rod, turn the parachute pack to the required angle, and then release the control rod. The parachute pack stops turning and automatically moves forward.

[0004] Current parachuting simulation devices are either single - soldier frames, such as portal frames, or polygonal frames, which only lift people on the frames or use a non - powered hand - pulling method where pulling rotates and not pulling stops rotation, not conforming to the real scenario; or they rotate through motors, some controlled by buttons and some by control rope switches. They can neither simulate and reproduce multiple parachuting states, nor can they control the rotation speed through the stretching amplitude of the control rods. After releasing the control rod, they cannot even simulate the action of the parachute pack stopping rotation and moving forward, with a large gap from the actual operation. How to highly simulate multiple control actions during paratrooper air dropping has become a topic of common concern and research for the military and related enterprises, with a strong sense of urgency and mission.

[0005] In addition, if simulating some actions and processes close to actual combat, such as the lateral movement control simulation during air dropping, a frame with guide rails is required. For a polygonal frame, the length of the guide rails for each section is much longer than that of the current frame only for rotation simulation. For a team simulation, this frame needs to be built very large, occupying a large amount of ground resources. How to accommodate more people within the same floor area is also a practical and technical problem that needs to be considered.

[0006] In summary, there is currently a lack of a polygonal parachute landing maneuver training simulation device that simulates the above actions. Content of the Utility Model

[0007] The utility model provides a polygonal parachute landing maneuver training simulation device to solve the above-mentioned technical problems.

[0008] A polygonal parachute landing maneuver training simulation device includes at least four vertical columns and at least four crossbeams with guide rails. Each crossbeam is connected end to end in sequence to form a closed polygon. The top of the vertical column is in supporting and fixing cooperation with the connection part of the adjacent crossbeam. At least one connecting beam with a guide rail is arranged between a group of parallel crossbeams, and both ends of the connecting beam are fixed on the corresponding crossbeams.

[0009] Preferably, an upper chord and web members are fixed on the connecting beam. The connecting beam serves as a lower chord and forms a truss together with the upper chord and web members.

[0010] Preferably, a rain shelter frame and a rain shelter are fixed on the upper surface of the crossbeam. The rain shelter frame is a triangular support frame, including triangular frames at both ends, a first connecting rod connecting the centers of the bottoms of the two triangular frames, second connecting rods arranged in parallel connecting the three vertices of the two triangular frames. A plurality of vertical support rods are fixed between the first connecting rod and the upper second connecting rod. A plurality of groups of tie rods are symmetrically arranged between the first connecting rod and the second connecting rods on both sides. A plurality of diagonal support rods are arranged between the first connecting rod and the corresponding tie rods on both sides. The vertical support rods, tie rods, and diagonal support rods are located in the same vertical plane. The rain shelter is a tarpaulin or a shed board fixed on the rain shelter frame.

[0011] Preferably, a horizontal overlapping plate is fixed on the crossbeam. Both ends of the connecting beam have card slots, and both ends of the connecting beam are fixed on the overlapping plate and the corresponding first connecting rod is stuck in the card slot.

[0012] Preferably, the top of the vertical column has a circular tray, and the end of the crossbeam is lapped and fixed on the tray. Preferably, a stepped ladder is provided below the end of each crossbeam, and a movable stepped ladder is provided below the end of each connecting beam.

[0013] Preferably, simulation parachute jump control training units are provided on both the cross beam and the connecting beam. The simulation parachute jump control training unit includes a pulley mechanism for hanging on a guide rail, a first frame fixed to the bottom of the pulley mechanism, a traveling mechanism for driving the pulley mechanism to roll on the guide rail, a first rotating shaft rotatably provided at the bottom of the first frame, a rotating motor fixed in the first frame for driving the first rotating shaft to rotate, a controllable swinging mechanism provided at the bottom of the first rotating shaft, a second frame provided at the bottom of the controllable swinging mechanism, two steering simulation mechanisms, and control belts fixed to both sides of the second frame; the controllable swinging mechanism includes a baffle fixed to the first rotating shaft, a fixing plate fixed below the baffle, two first switch units arranged on the fixing plate for triggering cooperation with the baffle after pulling the control belt, a sleeve hinged to the first rotating shaft in the left-right direction, and an elastic reset mechanism. The two first switch units are respectively located on the left and right sides of the sleeve and are normally open switches. The two first switch units are arranged in independent drive circuits for driving the traveling mechanism to laterally move towards the corresponding first switch unit side. A horizontal pin shaft is fixed to the first rotating shaft in the front-back direction. The sleeve is hinged to the pin shaft. The elastic reset mechanism includes sleeves horizontally inserted and fixed on both sides of the sleeve, an adjustable elastic member inserted in the sleeve, and a positioning member provided at the outer end of the sleeve for pressing the adjustable elastic member. The inner end of the adjustable elastic member is in top pressure cooperation with the side surface of the lower end of the first rotating shaft;

[0014] The two steering simulation mechanisms are correspondingly arranged at the left and right end parts of the second frame. The two steering simulation mechanisms are respectively a first steering simulation mechanism and a second steering simulation mechanism. The first steering simulation mechanism is located at the left end part of the second frame and includes a first wire drawing box with an automatic contraction function, a wire winding wheel arranged outside the first wire drawing box, a control rope arranged on the wire winding wheel, a control rod fixed at the other end of the control rope, a second rotating shaft in anti-rotation cooperation with the wire winding wheel, a driving gear arranged at the end part of the second rotating shaft, a driven wheel meshing with the driving gear, a third rotating shaft in anti-rotation cooperation with the driven wheel, a second switch unit, and a speed regulator connected to the third rotating shaft. The driven wheel includes a driven gear and a switch wheel coaxially arranged integrally with the driven gear. The circumferential surface of the switch wheel has a groove initially cooperating with the second switch unit. The second switch unit includes two travel switches arranged side by side, namely a first normally open switch and a first normally closed switch. The second steering simulation mechanism has one more fixed pulley for changing the steering of the control rope than the first steering simulation mechanism. The remaining structure of the second steering simulation mechanism is the same as that of the first steering simulation mechanism and is symmetrically arranged along the first rotating shaft. The switch unit of the second steering simulation mechanism is defined as a third switch unit and includes a second normally open switch and a second normally closed switch. Among them, the first normally open switch and the second normally closed switch are connected in series to form a first steering circuit for controlling the rotating motor to drive the second frame to rotate to the left. The second normally open switch and the first normally closed switch are connected in series to form a second steering circuit for controlling the rotating motor to drive the second frame to rotate to the right. The first steering circuit and the second steering circuit are independently arranged. The end part of the wire in the first wire drawing box of the first steering simulation mechanism is fixed on the wire winding wheel. The upper end part of the control rope is fixed on the wire winding wheel and wound several turns. The lower end of the control rope passes through the bottom of the second frame downward. The output wire of the speed regulator is connected to the rotating motor.

[0015] Preferably, the first steering simulation mechanism and the second steering simulation mechanism further include second wire drawing boxes fixed at both ends of the front side of the second frame. The wires of the second wire drawing boxes are each independently connected to a control rod.

[0016] Preferably, the first switch unit is a proximity switch or a travel switch vertically arranged on the fixed plate.

[0017] Preferably, the second switch unit further includes a third normally-closed switch arranged side by side with the first normally-open switch and the first normally-closed switch. The third switch unit further includes a fourth normally-closed switch arranged side by side with the second normally-open switch and the second normally-closed switch. The bottom of the first frame is connected to a horizontal positioning plate through a connecting plate. The horizontal positioning plate is located at the rear or front side of the first rotating shaft. Two fourth switch units are arranged on the baffle. The two fourth switch units are respectively located on the left and right sides of the first rotating shaft and are normally-open switches. The fourth switch unit is a proximity switch or a travel switch vertically arranged on the baffle. The horizontal positioning plate is used for triggering cooperation with the fourth switch unit. The third normally-closed switch and the fourth switch unit on the same side are serially arranged in an independent drive circuit, and this drive circuit is used to drive the traveling mechanism to laterally move to the left. The fourth normally-closed switch and the fourth switch unit on the same side are serially arranged in an independent drive circuit for driving the traveling mechanism to laterally move to the right.

[0018] For the polygon parachute drop operation training simulation device of the present utility model, the guide rails provided on the cross beam and the connecting beam lay the foundation for the simulation parachute drop operation training units that can move along the guide rails on the cross beam and the connecting beam. A connecting beam is arranged between a group of parallel cross beams, which can increase the number of training personnel training on the device at the same time. In the case of the same number of personnel training, the floor area of the device is greatly reduced.

[0019] Furthermore, the upper chord and the web members are fixed on the connecting beam. The connecting beam serves as the lower chord, and together with the upper chord and the web members, a truss is formed, greatly enhancing the bearing capacity of the connecting beam and avoiding obvious deformations such as the middle part bending downwards when the connecting beam is in use.

[0020] Furthermore, a rain shelter frame and a rain shelter are fixed on the upper surface of the cross beam. The rain shelter can protect the training equipment under the rain shelter, extend the service life of the equipment, and can also provide shade, so that training is not affected even when the sun is strong. The rain shelter frame can not only support the rain shelter but also further increase the strength of the cross beam.

[0021] Furthermore, a horizontal overlapping plate is fixed on the cross beam. Both ends of the connecting beam have clamping grooves. Both ends of the connecting beam are fixed on the overlapping plate and the clamping grooves are stuck on the corresponding first connecting rods. The cross beam, the rain shelter frame and the connecting beam are structurally mutually restricted, with stronger integrity and greater stability.

[0022] Furthermore, the top of the column has a circular tray, which is convenient for the end of the cross beam to be overlapped and fixed on the tray.

[0023] Furthermore, in order to facilitate the boarding and jumping of the simulated airborne personnel, a ladder with steps is provided below the end of each cross beam, and a movable ladder with steps is provided below the end of each connecting beam. After the parachute jumpers jump out of the plane, they can immediately evacuate the movable ladder to avoid interference with the parachute jumpers on the cross beam.

[0024] Furthermore, simulation parachute drop control training units are provided on both the cross beam and the connecting beam. When a paratrooper is training, pulling down the control belt on one side at the rear simulates the parachute moving horizontally to that side in the air. Taking the left side as an example, pulling the left control belt causes the first switch unit on the left side to approach the baffle and be triggered to close. The drive circuit associated with the first switch unit on the left side turns on the first traveling mechanism, causing the polygonal parachute drop control training simulator to move horizontally to the left along the guide rail; pulling the control rod on one side at the rear simulates the parachute turning to that side in the air. Taking the left side as an example, pulling down the left control rod causes the pulling rope of the control rod to rotate the wire winding wheel. The wire winding wheel drives the driven wheel through the second rotating shaft and the driving gear. The switch wheel on the driven wheel pushes the second switch unit away from the initial position and triggers it. The first normally open switch closes, and the first steering circuit is turned on to control the rotating motor to drive the second frame to rotate towards the side of the first normally open switch. At the same time, the first normally closed switch opens to prevent the second steering circuit from being turned on by mistake. During this process, as the control rod is pulled down, the third rotating shaft rotates accordingly, driving the speed governor to adjust the speed. The lower the control rod is pulled, the faster the rotating speed is, simulating the adjustment of the parachute's direction in the air. When the control rod is released, the pulling wire is reset under the action of the wire pulling box, and the second switch unit is reset, and the second frame stops rotating; if the two control rods at the rear are pulled down simultaneously, the first steering circuit and the second steering circuit both remain open, and the rotating motor does not start and does not rotate, simulating the deceleration action of the paratrooper before touching the ground.

[0025] Furthermore, in actual parachute drops, there are also two control rods on the front side of the parachute. Pulling the diagonal control rods will increase the steering speed. A wire pulling box and a control rod are respectively arranged at both ends of the front side of the second frame for simulating the parachute drop action of pulling the diagonal control rods.

[0026] Furthermore, a third normally closed switch, a fourth normally closed switch, two fourth switch units, and a horizontal positioning plate are provided to simulate the forward movement after turning. In the actual parachute drop process, without any control actions or without any operation actions after turning, the parachute will keep moving forward. In this solution, after pulling the control rod on one side at the rear, for example, pulling the control rod on the side of the third normally closed switch, the second frame rotates towards that side. When the fourth switch unit on that side reaches the horizontal positioning plate and is triggered, since the third normally closed switch is in the normally open state after pulling the control rod and is in series with the fourth switch unit on that side, at this time, the polygonal parachute drop control training simulator does not move horizontally along the guide rail. After releasing the control rod, the third normally closed switch resets and closes. At this time, the second frame stops rotating and the polygonal parachute drop control training simulator moves horizontally along the guide rail, simulating the process of moving forward after turning in the air.

[0027] Further, a conductive slip ring is arranged on the first rotating shaft between the elastic reset mechanism and the first frame, which can connect the various wires that need to be connected to the first frame below the conductive slip ring through the conductive slip ring, avoiding wire entanglement and restrictions on the rotation angle during the rotation of the second frame.

[0028] Further, the structure of the adjustable elastic member can limit the swinging amplitude of the sleeve on the first rotating shaft, prevent the sleeve from swinging too much when pulling the control belt, and ensure stability when the first frame rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional structural schematic diagram of the polygonal parachute operation training simulation device in the present utility model;

[0030] Figure 2 is a three-dimensional structural schematic diagram of the polygonal parachute operation training simulation device after removing the awning in the present utility model;

[0031] Figure 3 is a side view structural schematic diagram of the polygonal parachute operation training simulation device in the present utility model;

[0032] Figure 4 is a top view structural schematic diagram of the polygonal parachute operation training simulation device in the present utility model;

[0033] Figure 5 is Figure 2 the enlarged view at A in

[0034] Figure 6 is Figure 2 the enlarged view at B in

[0035] Figure 7 is a structural diagram of the simulated parachute operation training unit in the present utility model;

[0036] Figure 8 is Figure 7 the enlarged view at C in

[0037] Figure 9 is Figure 7 the enlarged view at D in

[0038] Figure 10 is a top view structural schematic diagram of the second frame, the first steering simulation mechanism and the second steering simulation mechanism in the present utility model;

[0039] Figure 11 is Figure 10 the structural schematic diagram of the first steering simulation mechanism in

[0040] Figure 12 is a structural schematic diagram of the driven wheel in the present utility model.

[0041] It should be noted that Figures 1-6 the simulated parachute drop operation training units in Specific implementation manners

[0042] A polygon parachute drop operation training simulation device, as Figures 1-12 shown, includes at least four columns 105 and at least four cross beams 109 with guide rails. In this embodiment, there are six of each. In other embodiments, eight or the like can also be set according to the situation. Each cross beam is sequentially connected end to end to form a closed regular hexagon. The top of the column is fixedly and cooperatively supported at the connection with the adjacent cross beam. Specifically, the top of the column has a circular tray 117, and the end of the cross beam is lapped and fixed on the tray. The fixing method can be welding or bolt connection. In this embodiment, bolt connection is adopted. In order to increase the strength, a reinforcing plate 116 is also fixedly arranged on the side surface of the end of the cross beam. At least one connecting beam 104 with a guide rail is arranged between a group of parallel cross beams. In this embodiment, two connecting beams are arranged. The two ends of the connecting beam are fixed on the corresponding cross beams. An upper chord 103 and web members 102 are fixed on the connecting beam. The connecting beam serves as a lower chord and forms a truss together with the upper chord and the web members.

[0043] In this embodiment, a rain shelter frame and a rain shelter 107, 108 are fixed on the upper surface of the cross beam. The rain shelter frame is a triangular support frame, including triangular frames 115 at both ends, a first connecting rod 110 connecting the centers of the bottoms of the two triangular frames, and second connecting rods arranged in parallel connecting the three vertices of the two triangular frames. A plurality of vertical support rods 112 are fixedly arranged between the first connecting rod and the upper second connecting rod 113. A plurality of groups of tie rods 114 are symmetrically arranged between the first connecting rod and the second connecting rods 118 on both sides. A plurality of diagonal support rods 111 are arranged between the first connecting rod and the corresponding tie rods on both sides. The vertical support rods, tie rods and diagonal support rods are located in the same vertical plane. The rain shelter is a tarpaulin or a shed board fixed on the rain shelter frame. Specifically, in this embodiment, a shed board is adopted. The rain shelters 108 at both ends of the truss are flatter to avoid the truss, and the shed boards 107 along the triangular support frame have a larger inclination angle. A horizontal lapping plate 119 is fixedly arranged on the cross beam. The two ends of the connecting beam have clamping grooves 120. The two ends of the connecting beam are fixed on the lapping plate and the corresponding first connecting rod 104 is clamped in the clamping groove. A stepped ladder 106 is arranged below the end of each cross beam, and a stepped movable ladder 106 is arranged below the end of each connecting beam.

[0044] Simulation parachute drop control training units are provided on both the cross beam and the connecting beam, including a pulley mechanism for hanging on the guide rail 1, a first frame fixed to the bottom of the pulley mechanism, a traveling mechanism for driving the pulley mechanism to roll on the guide rail, a first rotating shaft 12 rotatably provided at the bottom of the first frame, a rotating motor 11 fixed in the first frame for driving the first rotating shaft to rotate, a controllable swinging mechanism provided at the bottom of the first rotating shaft, a second frame 14 provided at the bottom of the controllable swinging mechanism, two steering simulation mechanisms, and a control belt 17 fixed to both sides of the second frame.

[0045] In this embodiment, the first frame includes an upper plate 8, a lower plate 10, and connecting bolts 9, 26 connecting the upper plate and the lower plate. There is an accommodation space between the upper plate and the lower plate. The pulley mechanism includes two triangular hanging plates 6 arranged along the extension direction of the guide rail. Two rollers 2 are arranged on both sides of each triangular hanging plate along the movement direction of the guide rail. The cross section of the guide rail is a C-shaped structure, including a top plate, vertical plates integrally provided on both sides of the top plate, inclined plates at the lower ends of the vertical plates inclined and converging towards the middle, and a horizontal track plate provided at the bottom of the inclined plates. There is a gap for the triangular hanging plate to pass between the two horizontal track plates. The rollers arranged on both sides of the triangular hanging plate are located on the horizontal track plate and are in rolling fit with the horizontal track plate.

[0046] The traveling mechanism can be an existing traveling mechanism as long as it can satisfy the movement back and forth along the guide rail. In this embodiment, the traveling mechanism includes an adjustable elastic unit fixed to the top of the first frame and a traveling motor 3 fixed to the upper part of the adjustable elastic unit. A columnar driving wheel (not shown in the figure) is fixed on the output shaft of the traveling motor. The columnar driving wheel can be made of metal or rubber. The columnar driving wheel is pressed and fitted against the bottom of the guide rail.

[0047] The adjustable elastic unit includes a traveling motor base plate 4, at least two cylindrical spring seats 35 arranged in a front-back direction and provided below one side of the traveling motor base plate, and second compression springs 36 arranged in the cylindrical spring seats. A guide shaft inserted into the second compression spring is provided on the lower surface of the traveling motor base plate. A top plate 37 for adjusting the bottom of the compression spring is provided at the bottom of the cylindrical spring seat. The bottom of the top plate is connected to an adjusting bolt 38. The adjusting bolt is screwed on the top of the first frame. The other end of the traveling motor base plate is hinged and fixed to the top of the first frame. Specifically, the other side of the traveling motor base plate is connected to a hinge plate 5, and the other end of the hinge plate 5 is hinged to a hinge seat 7, and the hinge seat is fixed to the top of the first frame. One side of the traveling motor base plate is hinged and the other side is arranged on the cylindrical spring seat and the second compression spring with adjustable height. The second compression spring presses the traveling motor base plate to press the columnar driving wheel of the traveling motor against the bottom of the guide rail. Due to the limiting effect of the hinge structure, compared with the spring structures arranged at both ends, there will be no shaking in the left-right direction and it is more stable.

[0048] The controllable swing mechanism includes a baffle 28 fixed on the first rotating shaft, a fixing plate 27 fixed below the baffle, two first switch units 22 arranged on the fixing plate and used to trigger and cooperate with the baffle after pulling the control belt, a sleeve 29 hinged on the first rotating shaft 12 in the left - right direction, and an elastic reset mechanism. The two first switch units are respectively located on the left and right sides of the sleeve and are normally open switches. The two first switch units are arranged in independent drive circuits for driving the traveling mechanism to laterally move towards the side of the corresponding first switch unit. The first switch unit is a proximity switch or a travel switch vertically arranged on the fixing plate. A horizontal pin shaft 58 is fixed on the first rotating shaft in the front - rear direction. The sleeve is hinged with the pin shaft to realize the hinge of the sleeve 29 with the first rotating shaft 12 in the left - right direction.

[0049] The elastic reset mechanism includes sleeves 31 horizontally inserted and fixed on the left and right sides of the sleeve, an adjustable elastic member inserted in the sleeves, and a positioning member arranged at the outer end of the sleeves and pressing the adjustable elastic member. The inner end of the adjustable elastic member is in pressing cooperation with the side surface of the lower end of the first rotating shaft. In this embodiment, the adjustable elastic member includes a first compression spring 34 and a spring tongue 30 arranged at the inner end of the first compression spring. The inner end of the spring tongue abuts against the side surface of the lower end of the first rotating shaft. The outer end of the sleeve has a thread, and the positioning member is a bolt 32 screwed with the outer end of the sleeve. The outer end of the first compression spring is also inserted with a stepped shaft - shaped spring pressing plate 33. The diameter of the large - diameter section of the spring pressing plate is larger than the inner diameter of the first compression spring. The small - diameter section of the spring pressing plate is inserted into the first compression spring. The outer end of the spring tongue also has a plug inserted into the first compression spring, making the compression and rebound cooperation of the first compression spring with the spring pressing plate and the spring tongue more stable. In this embodiment, the outer end of the spring tongue is tangent to the side surface of the lower end of the first rotating shaft to prevent the spring tongue from jamming with the lower end of the first rotating shaft.

[0050] The second frame 14 is a rectangular frame made of angle iron, with two parallel horizontal fixing rods fixed at the top. The bottom of the sleeve is closed by a sealing plate, and the second frame is welded and fixed to the sealing plate at the bottom of the sleeve. Two steering simulation mechanisms are respectively arranged at the left and right ends of the second frame. The two steering simulation mechanisms are respectively a first steering simulation mechanism and a second steering simulation mechanism. The first steering simulation mechanism includes a first wire drawing box 19 with an automatic contraction function, a wire winding wheel 20 arranged outside the first wire drawing box, a control rope 18 arranged on the wire winding wheel, a control rod 16 fixed at the other end of the control rope, a second rotating shaft 40 in anti-rotation cooperation with the wire winding wheel, a driving gear 47 arranged at the end of the second rotating shaft, a driven wheel 21 meshing with the driving gear, a third rotating shaft in anti-rotation cooperation with the driven wheel, a second switch unit, and a speed regulator 39 connected to the third rotating shaft. The driven wheel 21 includes a driven gear 48 and a switch wheel 42 arranged coaxially and integrally with the driven gear. The circumferential surface of the switch wheel has a groove initially cooperating with the second switch unit. In this embodiment, the groove is a cut surface, and in other embodiments, it can also be a U-shaped groove. The second switch unit includes two travel switches arranged side by side, namely a first normally open switch 44 and a first normally closed switch 46, which are fixed on an L-shaped fixing plate 43, and the L-shaped fixing plate 43 is fixed on the second frame. The second steering simulation mechanism has one more fixed pulley 15 for changing the steering of the control rope than the first steering simulation mechanism. The remaining structure of the second steering simulation mechanism is the same as that of the first steering simulation mechanism and is symmetrically arranged along the first rotating shaft. For the convenience of distinction, the switch unit of the second steering simulation mechanism is defined as the third switch unit, including a second normally open switch and a second normally closed switch. Among them, the first normally open switch and the second normally closed switch are connected in series to form a first steering circuit for controlling the rotation motor 11 to drive the second frame to rotate to the left, and the second normally open switch and the first normally closed switch are connected in series to form a second steering circuit for controlling the rotation motor 11 to drive the second frame to rotate to the right. The first steering circuit and the second steering circuit are independently arranged. The end of the wire in the first wire drawing box of the first steering simulation mechanism is fixed on the wire winding wheel. The upper end of the control rope is fixed on the wire winding wheel and wound several turns. The lower end of the control rope passes through the bottom of the second frame downward. The output wire of the speed regulator is connected to the rotation motor. The speed regulator 39 is an existing product and is connected to the third rotating shaft through a potentiometer on it. Specifically, the third rotating shaft is connected to the potentiometer through a universal joint coupling 49. In this way, while ensuring the accurate transmission of the rotation angle from the third rotating shaft to the potentiometer, the relative position requirement between the potentiometer and the third rotating shaft is greatly reduced, which is convenient for installation. It should be noted that the winding directions of the control ropes of the first steering simulation mechanism and the second steering simulation mechanism on the corresponding wire winding wheels are both clockwise for adapting to the potentiometer. The control rope of the second steering simulation mechanism changes its direction through the fixed pulley 15 to ensure that when the control rods on both sides are pulled downward respectively, the rotation speed of the rotation motor 11 can be increased.An annular partition plate 45 is integrally arranged on the winding wheel 20, separating the winding wheel 20 into two annular grooves to form a double-groove winding wheel. The pull wire and the control cable are respectively located in different annular grooves to avoid mutual interference and winding. The ends of the pull wire and the control cable are both fixed in the corresponding annular grooves. Compared with connecting the pull wire and the control cable and winding them on the winding wheel, when the control cable is loosened, it can avoid the problem that the winding wheel cannot be reset in place due to insufficient friction between the control cable pull wire and the winding wheel, resulting in continuous rotation of the second frame and speed regulation failure. The second rotating shaft and the third rotating shaft are both fixed on the second frame through bearing seats.

[0051] The first steering simulation mechanism and the second steering simulation mechanism further include a second pull wire box 50. The second pull wire box is fixed at both ends of the front side of the second frame. The pull wires of the pull wire box are each separately connected to a control rod. During actual airborne operations, there are also two control rods on the front side of the parachute. Pulling the diagonal control rods will increase the steering speed. Pull wire boxes and control rods are respectively arranged at both ends of the front side of the second frame to simulate the airborne action of pulling the diagonal control rods for practice.

[0052] The second switch unit further includes a third normally closed switch 51 arranged side by side with the first normally open switch and the first normally closed switch. The third switch unit of the second steering simulation mechanism further includes a fourth normally closed switch arranged side by side with the second normally open switch and the second normally closed switch. The bottom of the first frame is connected to a horizontal positioning plate (not shown in the figure) through a connecting plate. The horizontal positioning plate is located behind or in front of the first rotating shaft. Two fourth switch units 23 are arranged on the baffle 28. The two fourth switch units are respectively located on the left and right sides of the first rotating shaft and are normally open switches. The fourth switch unit is a proximity switch or a travel switch vertically arranged on the baffle. The horizontal positioning plate is used to cooperate with the fourth switch unit for triggering. The third normally closed switch and the fourth switch unit on the same side are connected in series in an independent drive circuit, and this drive circuit is used to drive the traveling mechanism to laterally move to the left. The fourth normally closed switch and the fourth switch unit on the same side are connected in series in an independent drive circuit for driving the traveling mechanism to laterally move to the right.

[0053] In addition, in this embodiment, a conductive slip ring 24 is arranged on the first rotating shaft between the elastic reset mechanism and the first frame. The control lines of the first switch unit, the second switch unit, the third switch unit, the fourth switch unit, and the speed regulator all enter the first frame upward through the conductive slip ring. The conductive slip ring is an existing product and will not be elaborated here.

[0054] The rotary electric machine 11 is fixed to the bottom of the first frame through a flanged bearing housing 25. The rotary electric machine 11 is vertically arranged and the output shaft is fixedly connected to the first rotating shaft 12. The bearing housing 25 is rotationally and cooperatively connected to the first rotating shaft through a bearing. Regarding the power supply, each electrical component can be powered by a fixed power supply such as a lithium battery unit arranged in the first frame, or a flexible strip-shaped connecting wire used in existing 3D printers and gantry cranes can be adopted to connect to the mains power. The power supply is an existing technology and will not be elaborated here.

[0055] For the polygon parachute descent control training simulation device of the present utility model, the guide rails arranged on the cross beam and the connecting beam lay a foundation for arranging simulation parachute descent control training units that can move along the guide rails on the cross beam and the connecting beam. A connecting beam is arranged between a group of parallel cross beams, which can increase the number of training personnel training on the device at the same time. In the case of the same number of personnel training, the floor area of the device is greatly reduced; the upper chord and the web members are fixed on the connecting beam, and the connecting beam serves as the lower chord, forming a truss together with the upper chord and the web members, greatly enhancing the bearing capacity of the connecting beam and avoiding obvious deformations such as the middle part bending downwards when the connecting beam is in use; the upper surface of the cross beam is fixed with a rain shelter frame and a rain shelter. The rain shelter can protect the training equipment under the rain shelter, extend the service life of the equipment, and can also shade the sun, and does not affect training even when the sun is strong. The rain shelter frame can not only support the rain shelter but also further increase the strength of the cross beam; a horizontal overlapping plate is fixed on the cross beam, and both ends of the connecting beam have clamping grooves. Both ends of the connecting beam are fixed on the overlapping plate and the clamping grooves are clamped on the corresponding first connecting rods. The cross beam, the rain shelter frame and the connecting beam are structurally mutually restricted, with stronger integrity and more stability; the top of the column has a circular tray, which is convenient for the end of the cross beam to be overlapped and fixed on the tray; it is convenient for simulated airborne personnel to board and jump off. A ladder with steps is arranged below the end of each cross beam, and a movable ladder with steps is arranged below the end of each connecting beam.

[0056] In the simulated parachute drop control training unit of this embodiment, when a parachutist is training and pulls down the control strap on one side at the rear, it simulates the parachute moving horizontally to that side in the air. Taking the left side as an example, when pulling the left control strap, the first switch unit on the left approaches the baffle and is triggered to close, and the drive circuit associated with the first switch unit on the left turns on the traveling mechanism, causing the simulated parachute drop control training unit to move horizontally to the left along the guide rail; when pulling the control rod on one side at the rear, it simulates the parachute rotating to that side in the air. Taking the left side as an example, when pulling down the left control rod, the control rope rotates the winding wheel, and the winding wheel drives the driven wheel through the second rotating shaft and the driving gear. The switch wheel on the driven wheel pushes the second switch unit away from the initial position and triggers it. The first normally open switch closes, and the first steering circuit is turned on to control the rotating motor to drive the second frame to rotate to the left. At the same time, the first normally closed switch opens to prevent the second steering circuit from being turned on by mistake. During this process, as the control rod is pulled down, the third rotating shaft rotates accordingly, driving the speed governor to adjust the speed. The lower the control rod is pulled, the faster the rotating speed is, simulating the adjustment of the parachute's direction in the air. When the control rod is released, the pull wire is reset under the action of the first pull wire box, the second switch unit is reset, and the second frame no longer rotates; if the two control rods at the rear are pulled down simultaneously, the first steering circuit and the second steering circuit both remain open, the rotating motor does not start and does not rotate, simulating the deceleration action of the parachutist before touching the ground.

[0057] Furthermore, a third normally closed switch, a fourth normally closed switch, two fourth switch units, and a horizontal positioning plate are provided to simulate the forward movement after turning. In the actual parachute drop process, without any control action or without any operation action after turning, the parachute will keep moving forward. In this solution, after pulling the control rod on one side at the rear, for example, pulling the control rod on the side of the third normally closed switch, the second frame rotates to that side. When the fourth switch unit on that side reaches the horizontal positioning plate and is triggered, since the third normally closed switch is in the normally open state after pulling the control rod and is in series with the fourth switch unit on that side, at this time, the simulated parachute drop control training unit does not move horizontally along the guide rail. After releasing the control rod, the third normally closed switch resets and closes. At this time, the second frame stops rotating and the simulated parachute drop control training unit moves horizontally along the guide rail, simulating the process of moving forward after turning in the air.

[0058] A conductive slip ring is provided on the first rotating shaft between the elastic reset mechanism and the first frame, which can connect the various wires that need to be connected to the first frame below the conductive slip ring through the conductive slip ring, avoiding wire entanglement and the limitation of the rotation angle during the rotation of the second frame.

[0059] The structure of the adjustable elastic member can limit the swinging amplitude of the sleeve on the first rotating shaft, prevent the sleeve from swinging too much when pulling the control strap, and ensure stability when the first frame rotates.

[0060] For an I-shaped guide rail, the traveling motor is installed on one side of the roller to drive the roller shaft, which is unstable. Often, a traveling motor needs to be set on each side. However, in the solution of this application, the traveling motor is placed below the guide rail, and the simulated parachute drop control training unit is driven to move along the guide rail by means of a columnar driving wheel rubbing the bottom of the guide rail. Since the columnar driving wheel is located directly below the guide rail, the operation is more stable, and only one traveling motor is required. In addition, in order to prevent falling off, the device for simulated parachute drop training often preferably uses a C-shaped guide rail, and the roller can be placed inside the C-shaped guide rail. Due to the limited internal space of the C-shaped guide rail, how to drive the simulated parachute drop control training unit to move along the guide rail is a difficult problem. The traveling motor is placed below the guide rail, and this problem is well solved by means of a columnar driving wheel rubbing the bottom of the guide rail.

Claims

1. A polygonal parachute maneuvering training simulation device, characterized in that: The invention comprises at least four columns and at least four beams with guide rails, wherein the beams are connected end to end in sequence to form a closed polygon, wherein the top of the column is supported and fixedly matched with the connection between the adjacent beams, wherein at least one connecting beam with a guide rail is arranged between a group of parallel beams, and the two ends of the connecting beam are fixed on the corresponding beams; the upper surface of the beam is fixed with the canopy frame and the canopy, wherein the canopy frame is a triangular support frame, comprising triangular frames at both ends, a first connecting rod connecting the bottom centers of the two triangular frames, and a second connecting rod arranged in parallel to connect the three vertices of the two triangular frames. A connecting rod, a plurality of vertical support rods are fixedly arranged between the first connecting rod and the second connecting rod above, a plurality of groups of pull rods are symmetrically arranged between the first connecting rod and the second connecting rods on both sides, a plurality of oblique support rods are arranged between the first connecting rod and the corresponding pull rods on both sides, the vertical support rods, the pull rods and the oblique support rods are located on the same vertical plane, and the canopy is a tarpaulin or a canopy board fixed on the canopy frame; a horizontal lap plate is fixedly arranged on the crossbeam, and both ends of the connecting beam have slots, and the two ends of the connecting beam are fixed on the lap plate and the corresponding first connecting rod is stuck in the slot.

2. A polygonal parachute maneuvering training simulation device according to claim 1, characterized in that: An upper chord and a web are fixed on the connecting beam, and the connecting beam serves as a lower chord to form a truss together with the upper chord and the web.

3. A polygonal parachute maneuvering training simulation device according to claim 1, characterized in that: The top of the column is provided with a circular tray, and the end of the crossbeam is overlapped and fixed on the tray.

4. A polygonal parachute maneuvering training simulation device according to claim 1, characterized in that: A ladder with steps is provided under the end of each cross beam, and a movable ladder with steps is provided under the end of each connecting beam.

5. The polygonal parachute maneuvering training simulation device according to any one of claims 1 to 4, characterized in that: The cross beam and the connecting beam are both provided with a simulated parachute manipulation training unit, which includes a pulley mechanism for hanging on the guide rail, a first frame fixed at the bottom of the pulley mechanism, a walking mechanism for driving the pulley mechanism to roll on the guide rail, a first rotating shaft rotatably arranged at the bottom of the first frame, a rotating motor fixed in the first frame for driving the first rotating shaft to rotate, a controllable swing mechanism arranged at the bottom of the first rotating shaft, a second frame arranged at the bottom of the controllable swing mechanism, two steering simulation mechanisms and a steering belt fixed on both sides of the second frame; the controllable swing mechanism includes a baffle fixed on the first rotating shaft, a fixed plate fixed under the baffle, and a steering belt arranged on the fixed plate for turning when pulling. The two first switch units that are triggered and matched with the baffle after the moving operating belt, the sleeve hinged on the first rotating shaft in the left and right directions, and the elastic reset mechanism, the two first switch units are respectively located on the left and right sides of the sleeve and are normally open switches, the two first switch units are arranged in a mutually independent driving circuit for driving the walking mechanism to move laterally to the corresponding first switch unit side, a horizontal pin shaft is fixed on the first rotating shaft along the front-back direction, the sleeve is hingedly arranged with the pin shaft, the elastic reset mechanism includes a sleeve horizontally inserted and fixed on the left and right sides of the sleeve, an adjustable elastic member inserted in the sleeve, and a positioning member arranged at the outer end of the sleeve to press the adjustable elastic member, and the inner end of the adjustable elastic member is pressed against the side surface of the lower end of the first rotating shaft; The two steering simulation mechanisms are respectively arranged at the left and right ends of the second frame, and the two steering simulation mechanisms are respectively a first steering simulation mechanism and a second steering simulation mechanism. The first steering simulation mechanism is located at the left end of the second frame, and includes a first wire pull box with an automatic retraction function, a winding wheel arranged outside the first wire pull box, a control rope arranged on the winding wheel, a control rod fixed to the other end of the control rope, a second rotating shaft matched with the winding wheel for anti-rotation, a driving gear arranged at the end of the second rotating shaft, a driven wheel meshed with the driving gear, a third rotating shaft matched with the driven wheel for anti-rotation, a second switch unit and a speed regulator connected to the third rotating shaft, the driven wheel includes a driven gear and a switch wheel arranged coaxially with the driven gear, a groove initially matched with the second switch unit is provided on the circumferential surface of the switch wheel, and the second switch unit includes two travel switches arranged side by side, which are respectively a first normally open switch and a first normally closed switch. The second steering simulation mechanism has one more fixed pulley for changing the direction of the control rope than the first steering simulation mechanism. The remaining structure of the second steering simulation mechanism is the same as that of the first steering simulation mechanism and is symmetrically arranged along the first rotation axis. The switch unit of the second steering simulation mechanism is defined as a third switch unit, including a second normally open switch and a second normally closed switch, wherein the first normally open switch and the second normally closed switch are connected in series to form a first steering circuit for controlling the rotating motor to drive the second frame to rotate to the left, the second normally open switch and the first normally closed switch are connected in series to form a second steering circuit for controlling the rotating motor to drive the second frame to rotate to the right, the first steering circuit and the second steering circuit are arranged independently of each other, the wire end of the first wire box in the first steering simulation mechanism is fixed on the winding wheel, the upper end of the control rope is fixed on the winding wheel and wound several times, the lower end of the control rope passes downward through the bottom of the second frame, and the output wire of the speed regulator is connected to the rotating motor.

6. A polygonal parachute maneuvering training simulation device according to claim 5, characterized in that: The first steering simulation mechanism and the second steering simulation mechanism also include a second wire drawing box, which is fixed at two ends of the front side of the second frame, and the wires of the second wire drawing box are each individually connected to a control rod.

7. A polygonal parachute maneuvering training simulation device according to claim 5, characterized in that: The first switch unit is a proximity switch or a travel switch vertically arranged on the fixing plate.

8. The polygonal parachute maneuvering training simulation device according to claim 5, characterized in that: The second switch unit also includes a third normally closed switch arranged side by side with the first normally open switch and the first normally closed switch, and the third switch unit also includes a fourth normally closed switch arranged side by side with the second normally open switch and the second normally closed switch. The bottom of the first frame is connected to the horizontal positioning plate through a connecting plate, and the horizontal positioning plate is located on the rear side or the front side of the first rotating shaft. Two fourth switch units are arranged on the baffle, and the two fourth switch units are respectively located on the left and right sides of the first rotating shaft and are normally open switches. The fourth switch unit is a proximity switch or a travel switch vertically arranged on the baffle, and the horizontal positioning plate is used to trigger and cooperate with the fourth switch unit. The third normally closed switch and the fourth switch unit on the same side are arranged in series in an independent drive circuit, and the drive circuit is used to drive the walking mechanism to move laterally to the left, and the fourth normally closed switch and the fourth switch unit on the same side are arranged in series in an independent drive circuit, and are used to drive the walking mechanism to move laterally to the right.

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