Artificial intelligence flight backpack capable of prolonging flight duration

Abstract

The utility model relates to the technical field of flight equipment, and discloses an artificial intelligence flight knapsack capable of prolonging flight duration, which comprises a knapsack body, and a limit block is fixedly mounted at the rear of the top end of the knapsack body. According to the utility model, the square blocks, the screw rods, the moving shafts and the connecting blocks are arranged, and the screw rods are in threaded sleeve connection with the square blocks, so that when the screw rods rotate, the two square blocks are driven to move back to back, and at the moment, the two square blocks drive the two first photovoltaic panels and the two first long shafts to move through the two moving shafts; then two first long shafts pull two second long shafts through four connecting blocks, then the two second long shafts drive two second photovoltaic panels and two rotating shafts to move, and at the moment, the two second photovoltaic panels rotate with the sleeving joint of the two rotating shafts and the two long rods as the axis; and then the lighting surfaces of the two second photovoltaic panels and the two first photovoltaic panels face the front during movement, so that the first photovoltaic panels and the second photovoltaic panels can be automatically folded and unfolded.

Description

Technical Field

[0001] The utility model relates to the technical field of flight equipment, and more specifically, to an artificial intelligence flight backpack capable of increasing flight time. Background Art

[0002] A flight backpack is an aircraft that allows the user to wear the product and use a console to operate a vertical engine that mimics the working principle of an airplane engine, and can carry the operator into the sky.

[0003] Existing flying backpacks are generally divided into two types: jet-driven and rotor-driven. Jet-driven flying backpacks use hydrogen peroxide as fuel, and the high-temperature airflow ejected through two nozzles lifts the pilot into the air. Rotor-driven flying backpacks generally use electric drive to rotate the rotor to generate thrust, thereby lifting the operator into the air. Some flying backpacks currently on the market will have photovoltaic panels installed on the top. The photovoltaic panel structure extends the flight time of the flying backpack and can switch between dual power sources, one group of power is rotor electric drive and the other group is jet drive. Although this method can effectively increase the flight time, in order to improve the efficiency of photovoltaic panel electricity conversion, the photovoltaic panels on jet backpacks are often larger. When the flying backpack is not in use, dust will easily accumulate on the outer surface of the photovoltaic panel, which will affect the lighting effect of the photovoltaic panel. In addition, since the photovoltaic panel is relatively fragile, if the photovoltaic panel is not protected when the flying backpack is idle, it is easy to cause damage to the photovoltaic panel, which brings inconvenience to the driver's daily use. Therefore, it needs to be improved. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the utility model provides an artificial intelligence flight backpack that can increase the flight time and has the advantage of automatically folding and unfolding photovoltaic panels.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: an artificial intelligence flight backpack capable of increasing flight time, comprising:

[0006] A backpack body, wherein a limit block is fixedly installed at the rear of the top of the backpack body, a rotating plate is movably connected to the top of the front of the backpack body, and a long rod is fixed to the top of the front of the rotating plate;

[0007] A driving mechanism, the driving mechanism being arranged at the center of the top end of the long rod;

[0008] An opening and closing mechanism, the opening and closing mechanism being arranged at the top end of the long pole;

[0009] The top end of the rotating shaft passes through the bottom end of the long rod and extends to the top of the long rod, and the outer surface of the rotating shaft is movably connected to the inner surface of the long rod.

[0010] As a preferred technical solution of the present invention, the driving mechanism includes:

[0011] A fixed block, the bottom end of which is fixedly connected to the top end of the long rod;

[0012] A dual-axis motor, wherein the outer surface of the dual-axis motor is fixedly connected to the inner portion of the top of the fixed block, the other end of the output shaft of the dual-axis motor is fixedly sleeved with a rotating shaft, and the other end of the rotating shaft is fixedly connected to the screw.

[0013] As a preferred technical solution of the present invention, fixing frames are fixedly installed on both the left and right sides of the backpack body. There are two fixing frames, and a backboard is fixedly installed behind the opposite sides of the two fixing frames.

[0014] As a preferred technical solution of the present invention, a first safety belt is fixedly installed on the bottom end of the backboard, a latch plate is fixedly installed on the other end of the first safety belt, a safety belt latch is movably sleeved inside the latch plate, a second safety belt is fixedly installed on the other end of the safety belt latch, and the other end of the second safety belt is fixedly connected to the back of the backpack body.

[0015] As a preferred technical solution of the present invention, armrests are fixedly installed on opposite sides of the two fixing frames, and a control rod is fixedly installed behind the top of the armrest.

[0016] As a preferred technical solution of the present invention, first cantilevers are fixedly mounted on the top ends of the left and right sides of the backpack body, and a rotor propeller is movably mounted on the bottom end of the other end of the first cantilever.

[0017] As a preferred technical solution of the present invention, second cantilevers are fixedly installed on both the left and right sides of the backpack body, and a jet propulsion device is fixedly sleeved inside the other end of the second cantilever.

[0018] As a preferred technical solution of the present invention, a motor bracket is fixedly installed on the right side of the top of the backpack body, a driving motor is fixedly installed on the top of the motor bracket, and a short shaft is fixedly sleeved on the other end of the output shaft of the driving motor, and the bottom end of the short shaft passes through the top of the motor bracket and extends to the interior of the motor bracket.

[0019] As an optimal technical solution of the present invention, the outer surface of the bottom end of the short shaft is fixedly sleeved with a rotating rod, the other end of the rotating rod is internally fixedly sleeved with an extrusion shaft, the bottom end of the outer surface of the extrusion shaft is movably connected to a motion rod, and the bottom end of the motion rod is movably connected to the top end of the backpack body.

[0020] As an optimal technical solution of the present invention, a toothed plate is fixedly installed on the left side of the back side of the motion rod, the outer surface of the toothed plate is movably connected to the inside of the limit block, the outer surface of the top end of the toothed plate is meshed with a gear, the inside of the gear is fixedly sleeved with a circular shaft, the outer surfaces of the left and right ends of the circular shaft are movably sleeved with arc blocks, the bottom end of the arc block is fixedly connected to the top of the backpack body, the outer surface of the circular shaft is fixedly sleeved with a rotating plate, and the front of the lower end of the rotating plate is fixedly connected to the top of the rotating plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The utility model is provided with square blocks, screws, motion shafts and connecting blocks. Since the two screws are threadedly connected to the two square blocks, when the two screws rotate, they will drive the two square blocks to move away from each other. At this time, the two square blocks will drive the two first photovoltaic panels and the two first long axes to move through the two motion shafts, and then the two first long axes will pull the two second long axes through the four connecting blocks, and then the two second long axes will drive the two second photovoltaic panels and the two rotating shafts to move. At this time, the two second photovoltaic panels will rotate with the joints of the two rotating shafts and the two long rods as the axis, and then the lighting surfaces of the two second photovoltaic panels will face forward during rotation. At the same time, the lighting surfaces of the two first photovoltaic panels will also face forward during movement, so that the first photovoltaic panel and the second photovoltaic panel can automatically fold and unfold.

[0023] 2. The utility model is provided with an extrusion shaft, a moving rod, a toothed plate and a gear. When the driving motor is running, the short shaft will drive the extrusion shaft to rotate through the rotating rod. At this time, the extrusion shaft will squeeze and push the inside of the moving rod during rotation, so that the moving rod drives the toothed plate to move. Due to the limitation of the limit block, the toothed plate will move forward. Since the toothed plate is meshed with the gear, when the toothed plate moves forward, it will drive the gear to rotate. At this time, the gear will drive the rotating plate to rotate through the circular shaft, and then the rotating plate will drive the rotating plate to rotate as a whole, thereby automatically adjusting the lighting angle of the first photovoltaic panel and the second photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0026] Figure 3 This is a schematic cross-sectional view of the utility model;

[0027] Figure 4 This is a schematic cross-sectional view of the drive motor of the utility model;

[0028] Figure 5 This is a schematic cross-sectional view of the square block of the present invention;

[0029] Figure 6 This is a schematic cross-sectional view of the extrusion shaft of the utility model.

[0030] In the figure: 1. backpack body; 2. rotating plate; 3. long rod; 4. square block; 5. screw; 6. motion axis; 7. first photovoltaic panel; 8. first long axis; 9. connecting block; 10. second long axis; 11. second photovoltaic panel; 12. rotating shaft; 13. fixed block; 14. dual-axis motor; 15. rotating shaft; 16. fixing frame; 17. backboard; 18. first safety belt; 19. latch plate; 20. safety belt latch; 21. second safety belt; 22. handrail; 23. control lever; 24. first cantilever; 25. rotor propeller; 26. second cantilever; 27. jet propeller; 28. limit block; 29. ​​motor bracket; 30. drive motor; 31. short shaft; 32. rotating rod; 33. extrusion shaft; 34. motion rod; 35. gear plate; 36. gear; 37. circular shaft; 38. arc block; 39. rotating plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1 to 6 As shown, the utility model provides an artificial intelligence flight backpack that can increase flight time, including:

[0033] The backpack body 1 has a limit block 28 fixedly mounted on the rear of the top of the backpack body 1, a rotating plate 2 movably connected to the top of the front of the backpack body 1, and a long rod 3 fixed to the top of the front of the rotating plate 2;

[0034] The driving mechanism is arranged at the center of the top end of the long rod 3;

[0035] An opening and closing mechanism is provided at the top of the long rod 3;

[0036] Among them, the opening and closing mechanism includes a square block 4, the bottom end of the square block 4 is movably connected to the top end of the long rod 3, the internal thread of the square block 4 is sleeved with a screw 5, the internal movably sleeved at the bottom end of the square block 4 is sleeved with a moving shaft 6, the bottom end of the moving shaft 6 extends through the interior of the long rod 3 to the bottom of the bottom end of the long rod 3, the outer surface of the moving shaft 6 is movably connected to the interior of the long rod 3, the outer surface of the moving shaft 6 is fixedly installed with a first photovoltaic panel 7, the outer surface of the other end of the first photovoltaic panel 7 is fixedly installed with a first long shaft 8, the outer surfaces of the top and bottom ends of the first long shaft 8 are movably sleeved with a connecting block 9, the inner movably sleeved with a second long shaft 10 at the other end of the connecting block 9, the outer surface of the second long shaft 10 is fixedly installed with a second photovoltaic panel 11, the outer surface of the other end of the second photovoltaic panel 11 is fixedly installed with a rotating shaft 12, the top end of the rotating shaft 12 passes through the bottom end of the long rod 3 and extends to the top end of the long rod 3, and the outer surface of the top end of the rotating shaft 12 is movably sleeved with the internal center of the long rod 3.

[0037] When the two screws 5 rotate, the two square blocks 4 will move away from each other driven by the two screws 5, and then the two square blocks 4 will drive the two first photovoltaic panels 7 to move through the two moving shafts 6, and then the two first photovoltaic panels 7 will drive the four connecting blocks 9 to move through the two first long shafts 8. At this time, the four connecting blocks 9 will pull the two second long shafts 10 respectively, so that the two second long shafts 10 drive the two second photovoltaic panels 11 and the two rotating shafts 12 to move. At this time, the two second photovoltaic panels 11 will rotate with the movable sockets of the two rotating shafts 12 and the long rods 3 as the axis, and then the lighting surfaces of the two second photovoltaic panels 11 will face forward during rotation, and at this time, the lighting surfaces of the two first photovoltaic panels 7 will also face forward during movement.

[0038] The driving mechanism includes:

[0039] A fixing block 13, the bottom end of the fixing block 13 is fixedly connected to the top end of the long rod 3;

[0040] The outer surface of the dual-axis motor 14 is fixedly connected to the inner part of the top of the fixed block 13 , and the other end of the output shaft of the dual-axis motor 14 is fixedly sleeved with a rotating shaft 15 , and the other end of the rotating shaft 15 is fixedly connected to the screw 5 .

[0041] When the dual-axis motor 14 is running, the two rotating shafts 15 will drive the two screws 5 to rotate.

[0042] There are two fixing frames 16 fixedly mounted on both the left and right sides of the backpack body 1 , and a back plate 17 is fixedly mounted behind the opposite sides of the two fixing frames 16 .

[0043] Due to the design of the back plate 17 , the driver will feel more comfortable when wearing the backpack body 1 as a whole.

[0044] Among them, a first safety belt 18 is fixedly installed at the bottom end of the back plate 17, and a latch plate 19 is fixedly installed at the other end of the first safety belt 18. A safety belt latch 20 is movably sleeved inside the latch plate 19, and a second safety belt 21 is fixedly installed at the other end of the safety belt latch 20. The other end of the second safety belt 21 is fixedly connected to the back of the backpack body 1.

[0045] Due to the design of the first safety belt 18 , the latch plate 19 , the four safety belt latches 20 and the four second safety belts 21 , the driver will be safer when driving the backpack body 1 as a whole.

[0046] The two fixing frames 16 are both fixedly mounted with armrests 22 on opposite sides thereof, and a control rod 23 is fixedly mounted behind the top of the armrests 22 .

[0047] Due to the design of the two operating rods 23 , the operator can control the movement of the backpack body 1 as a whole through the two operating rods 23 .

[0048] The top ends of the left and right sides of the backpack body 1 are fixedly mounted with first cantilevers 24 , and the bottom ends of the other ends of the first cantilevers 24 are movably mounted with rotor propellers 25 .

[0049] Due to the design of the two rotor propellers 25, power will be provided for the backpack body 1 as a whole.

[0050] The second cantilever 26 is fixedly mounted on both the left and right sides of the backpack body 1 , and a jet propulsion unit 27 is fixedly sleeved inside the other end of the second cantilever 26 .

[0051] Due to the design of the two jet propulsion units 27 , power is provided for the backpack body 1 as a whole.

[0052] Among them, a motor bracket 29 is fixedly installed on the right side of the top of the backpack body 1, and a driving motor 30 is fixedly installed on the top of the motor bracket 29. The other end of the output shaft of the driving motor 30 is fixedly sleeved with a short shaft 31, and the bottom end of the short shaft 31 passes through the top of the motor bracket 29 and extends to the inside of the motor bracket 29.

[0053] When the driving motor 30 is running, the short shaft 31 will rotate.

[0054] Among them, the outer surface of the bottom end of the short shaft 31 is fixedly sleeved with a rotating rod 32, the other end of the rotating rod 32 is internally fixedly sleeved with an extrusion shaft 33, the bottom end of the outer surface of the extrusion shaft 33 is movably connected to a moving rod 34, and the bottom end of the moving rod 34 is movably connected to the top of the backpack body 1.

[0055] When the short shaft 31 rotates, the rotating rod 32 will rotate driven by the short shaft 31, and then the rotating rod 32 will drive the extrusion shaft 33 to rotate. At this time, the outer surface of the extrusion shaft 33 will squeeze and push the inside of the moving rod 34 during rotation, causing the moving rod 34 to move.

[0056] Among them, a tooth plate 35 is fixedly installed on the left side of the back of the moving rod 34, and the outer surface of the tooth plate 35 is movably connected to the inside of the limit block 28. The outer surface of the top of the tooth plate 35 is meshed with a gear 36, and a circular shaft 37 is fixedly sleeved inside the gear 36. The outer surfaces of the left and right ends of the circular shaft 37 are movably sleeved with arc blocks 38, and the bottom end of the arc block 38 is fixedly connected to the top of the backpack body 1. The outer surface of the circular shaft 37 is fixedly sleeved with a rotating plate 39, and the front of the lower end of the rotating plate 39 is fixedly connected to the top of the rotating plate 2.

[0057] When the motion rod 34 moves, the tooth plate 35 will move under the drive of the motion rod 34. Due to the limiting effect of the limit block 28, the tooth plate 35 will move forward. Since the outer surface of the tooth plate 35 is meshed with the outer surface of the gear 36, when the tooth plate 35 moves forward, it will drive the gear 36 and the circular shaft 37 to rotate, and then the circular shaft 37 will drive the rotating plate 39 to rotate. At this time, the rotating plate 39 will drive the rotating plate 2 to rotate as a whole.

[0058] The working principle and use process of this utility model:

[0059] First, the driver starts the dual-axis motor 14. At this time, the two rotating shafts 15 will rotate under the drive of the dual-axis motor 14. Then, the two screws 5 will rotate under the drive of the two rotating shafts 15. Since the outer surfaces of the two screws 5 are respectively engaged with the internal threads of the two square blocks 4, when the two screws 5 rotate, they will respectively drive the two square blocks 4 to move. Since the bottom ends of the two square blocks 4 are movably connected to the top of the long rod 3, the two square blocks 4 will move back to back along the top of the long rod 3 under the drive of the two screws 5. Then, the two square blocks 4 will drive the two moving shafts 6 to move back to back. At the same time, the two moving shafts 6 will drive the two first photovoltaic panels 7 And the two first long shafts 8 move, and then the two first long shafts 8 will drive the two second long shafts 10 to move through the four connecting blocks 9. At this time, the two second long shafts 10 will drive the two second photovoltaic panels 11 and the two rotating shafts 12 to move. Since the top ends of the two rotating shafts 12 are both connected to the internal movable sockets in the center of the long rod 3, the two second photovoltaic panels 11 will rotate in opposite directions with the movable sockets of the two rotating shafts 12 and the two long rods 3 as the axis. Then the two second photovoltaic panels 11 will rotate in the opposite direction so that the lighting surface faces forward. At the same time, the two first photovoltaic panels 7 will also make the lighting surface face forward during movement, thereby realizing the function of automatically folding and unfolding the photovoltaic panels.

[0060] Then the driver starts the drive motor 30, and the short shaft 31 will drive the rotating rod 32 to rotate, and then the rotating rod 32 will drive the extrusion shaft 33 to rotate with the short shaft 31 as the axis. When the extrusion shaft 33 rotates, the outer surface of the extrusion shaft 33 will squeeze and push the inside of the motion rod 34 during the rotation, so that the motion rod 34 moves, and then the motion rod 34 will drive the gear plate 35 to move. Due to the design of the limit block 28, the movement of the gear plate 35 will be limited, so that the gear plate 35 can only move back and forth. The tooth plate 35 will move forward along the inside of the limit block 28 driven by the moving rod 34. Since the outer surface of the tooth plate 35 is meshed with the outer surface of the gear 36, the tooth plate 35 will drive the gear 36 to rotate during the forward movement. At this time, the circular shaft 37 will rotate with the movable socket connection with the two arc blocks 38 as the axis under the drive of the gear 36. At the same time, the circular shaft 37 will drive the rotating plate 2 to rotate as a whole through the rotating plate 39, thereby realizing the function of automatically adjusting the lighting angle of the first photovoltaic panel 7 and the second photovoltaic panel 11.

[0061] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0062] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An artificial intelligence flight backpack capable of increasing flight time, characterized in that: Includes: A backpack body (1), a limit block (28) is fixedly installed at the rear of the top of the backpack body (1), a rotary plate (2) is movably connected to the top of the front of the backpack body (1), and a long rod (3) is fixed to the top of the front of the rotary plate (2); A driving mechanism, the driving mechanism being arranged at the center of the top end of the long rod (3); An opening and closing mechanism, the opening and closing mechanism being arranged at the top end of the long rod (3); The opening and closing mechanism comprises a square block (4), the bottom end of the square block (4) is movably connected to the top end of the long rod (3), the inner thread of the square block (4) is sleeved with a screw rod (5), the inner movably sleeved with a motion shaft (6) at the bottom end of the square block (4), the bottom end of the motion shaft (6) extends through the inside of the long rod (3) to the bottom end of the long rod (3), the outer surface of the motion shaft (6) is movably connected to the inside of the long rod (3), the outer surface of the motion shaft (6) is fixedly mounted with a first photovoltaic panel (7), and the outer surface of the other end of the first photovoltaic panel (7) is A first long shaft (8) is fixedly installed, and the outer surfaces of the top and bottom ends of the first long shaft (8) are movably sleeved with a connecting block (9), and the inner portion of the other end of the connecting block (9) is movably sleeved with a second long shaft (10), and a second photovoltaic panel (11) is fixedly installed on the outer surface of the second long shaft (10), and a rotating shaft (12) is fixedly installed on the outer surface of the other end of the second photovoltaic panel (11), and the top end of the rotating shaft (12) passes through the bottom end of the long rod (3) and extends to the top end of the long rod (3), and the outer surface of the top end of the rotating shaft (12) is movably sleeved with the inner portion of the center of the long rod (3).

2. The artificial intelligence flight backpack capable of increasing flight time according to claim 1, characterized in that: The driving mechanism includes: A fixed block (13), the bottom end of the fixed block (13) being fixedly connected to the top end of the long rod (3); A dual-axis motor (14), wherein the outer surface of the dual-axis motor (14) is fixedly connected to the inner portion of the top end of the fixed block (13), the other end of the output shaft of the dual-axis motor (14) is fixedly sleeved with a rotating shaft (15), and the other end of the rotating shaft (15) is fixedly connected to the screw (5).

3. The artificial intelligence flight backpack capable of increasing flight time according to claim 1, characterized in that: The left and right sides of the backpack body (1) are both fixedly mounted with fixing frames (16), the number of the fixing frames (16) being two, and a back plate (17) is fixedly mounted behind the opposite sides of the two fixing frames (16).

4. The artificial intelligence flight backpack capable of increasing flight time according to claim 3, characterized in that: A first safety belt (18) is fixedly mounted on the bottom end of the back plate (17), a latch plate (19) is fixedly mounted on the other end of the first safety belt (18), a safety belt latch (20) is movably sleeved inside the latch plate (19), a second safety belt (21) is fixedly mounted on the other end of the safety belt latch (20), and the other end of the second safety belt (21) is fixedly connected to the back of the backpack body (1).

5. The artificial intelligence flight backpack capable of increasing flight time according to claim 3, characterized in that: An armrest (22) is fixedly mounted on opposite sides of the two fixing frames (16), and a control lever (23) is fixedly mounted behind the top of the armrest (22).

6. The artificial intelligence flight backpack capable of increasing flight time according to claim 1, characterized in that: The top ends of the left and right sides of the backpack body (1) are both fixedly mounted with first cantilevers (24), and the bottom ends of the other ends of the first cantilevers (24) are movably mounted with rotor propellers (25).

7. The artificial intelligence flight backpack capable of increasing flight time according to claim 1, characterized in that: Second cantilevers (26) are fixedly mounted on both the left and right sides of the backpack body (1), and a jet propulsion unit (27) is fixedly sleeved inside the other end of the second cantilever (26).

8. The artificial intelligence flight backpack capable of increasing flight time according to claim 1, characterized in that: A motor bracket (29) is fixedly mounted on the right side of the top of the backpack body (1), a driving motor (30) is fixedly mounted on the top of the motor bracket (29), a short shaft (31) is fixedly sleeved on the other end of the output shaft of the driving motor (30), and the bottom end of the short shaft (31) passes through the top of the motor bracket (29) and extends into the interior of the motor bracket (29).

9. The artificial intelligence flight backpack capable of increasing flight time according to claim 8, characterized in that: The outer surface of the bottom end of the short shaft (31) is fixedly sleeved with a rotating rod (32), the other end of the rotating rod (32) is fixedly sleeved with an extrusion shaft (33), the bottom end of the outer surface of the extrusion shaft (33) is movably connected to a motion rod (34), and the bottom end of the motion rod (34) is movably connected to the top end of the backpack body (1).

10. The artificial intelligence flight backpack capable of increasing flight time according to claim 9, characterized in that: A toothed plate (35) is fixedly mounted on the left side of the back of the motion rod (34), the outer surface of the toothed plate (35) is movably connected to the inside of the limit block (28), the outer surface of the top of the toothed plate (35) is meshed with a gear (36), the inside of the gear (36) is fixedly sleeved with a circular shaft (37), the outer surfaces of the left and right ends of the circular shaft (37) are movably sleeved with arc blocks (38), the bottom end of the arc block (38) is fixedly connected to the top of the backpack body (1), the outer surface of the circular shaft (37) is fixedly sleeved with a rotating plate (39), and the front of the lower end of the rotating plate (39) is fixedly connected to the top of the rotating plate (2).

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