Helicopter teaching aid for displaying flight principle of coaxial double rotors

Abstract

The utility model discloses a coaxial double-rotor flight principle demonstration helicopter teaching aid, which relates to the technical field of coaxial double-rotor flight principle teaching aids and comprises a base and a sliding cylinder, the sliding cylinder is positioned at the top end of the base, and two rotor assemblies are arranged on the outer wall of the sliding cylinder; the rotor assembly comprises a fixed cylinder, four mounting cylinders, a rotating block, rotor blades, a first fixed plate, a second fixed plate and an electric push rod, the fixed cylinder is rotationally mounted on the outer wall of the sliding cylinder, the four mounting cylinders are fixedly mounted on the outer wall of the fixed cylinder, the rotating block is rotationally mounted at one end of the inner wall of each mounting cylinder, and the rotor blades are fixedly mounted at one end of the rotating block; the first fixing plate is fixedly mounted at the other end of the rotating block; according to the technical scheme provided by the utility model, the rotor wing assembly is arranged, the angles of the rotor wing blades can be adjusted by rotating the rotor wing blades, and flight effects of different angles can be tested by adjusting multiple angles, so that the interactivity of the teaching aid is enhanced, the learning interest can be improved, and the learning initiative can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coaxial twin-rotor flight principle teaching aids, in particular to a coaxial twin-rotor flight principle display helicopter teaching aid. Background Art

[0002] The helicopter coaxial twin-rotor is an aircraft structure composed of two pairs of rotors, with the axes of the rotors parallel to each other and in the same plane. The upper and lower layers of the rotors are each composed of multiple rotor blades, and the upper and lower layers of the rotors can be connected through a structure and driven by a common power system. Nowadays, when using coaxial twin-rotor flight principle teaching aids for teaching, the teaching aids are only models, with less content to explain, and the teaching aids are less interactive, making the teaching relatively boring. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a coaxial twin-rotor flight principle demonstration helicopter teaching aid, so as to solve the problem that the teaching aids in the prior art are only models, the content of the explanation is relatively small, and the teaching aids are less interactive, making the teaching relatively boring.

[0004] In view of this, the utility model provides a coaxial twin-rotor flight principle demonstration helicopter teaching aid, comprising a base and a slide tube, wherein the slide tube is located at the top of the base, and the outer wall of the slide tube is provided with two rotor assemblies;

[0005] The rotor assembly includes a fixed cylinder, four mounting cylinders, a rotating block, a rotor blade, a first fixed plate, a second fixed plate and an electric push rod. The fixed cylinder is rotatably mounted on the outer wall of the sliding cylinder, the four mounting cylinders are fixedly mounted on the outer wall of the fixed cylinder, the rotating block is rotatably mounted on one end of the inner wall of the mounting cylinder, the rotor blade is fixedly mounted on one end of the rotating block, the first fixed plate is fixedly mounted on the other end of the rotating block, the electric push rod is fixedly mounted on one end of the inner wall of the mounting cylinder, and the second fixed plate is fixedly mounted on the output end of the electric push rod.

[0006] Optionally, a damping ring is fixedly mounted on the outer wall of the rotating block, the damping ring is located between the outer wall of the rotating block and the inner wall of the mounting tube, a support plate is fixedly mounted on the inner wall of the mounting tube, and the output end of the electric push rod is slidably mounted on the inner wall of the support plate.

[0007] Optionally, two rotating frames are fixedly installed on the outer wall of the sliding cylinder, a motor is fixedly installed on the bottom end of the inner wall of the rotating frame, a gear is fixedly installed on the output end of the motor, the fixed cylinder is rotatably installed on the corresponding outer wall of the rotating frame, and an annular rack is fixedly installed on the inner wall of the fixed cylinder, and the annular rack is meshed with the corresponding gear.

[0008] Optionally, a connecting rod is fixedly mounted on the top of the base, and the connecting rod is cross-shaped.

[0009] Optionally, the inner wall of the slide cylinder is cross-shaped, and the slide cylinder is slidably mounted on the outer wall of the connecting rod.

[0010] Optionally, limiting grooves are provided on both sides of the connecting rod, and limiting blocks are fixedly installed on the bottom ends of both sides of the inner wall of the sliding cylinder, and the limiting blocks are slidably installed on the corresponding limiting groove walls.

[0011] Optionally, the adjacent end surfaces of the first fixing plate and the second fixing plate are frosted surfaces.

[0012] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0013] 1. The utility model is a coaxial twin-rotor flight principle demonstration helicopter teaching aid. By setting a rotor assembly, the two rotor assemblies rotate in opposite directions to simulate the coaxial twin-rotor flight principle, and the angle of the rotor blades can be adjusted by rotating the rotor blades. A variety of angles can be adjusted to test the flight effects at different angles, thereby enhancing the interactivity of the teaching aid, improving learning interest, and improving learning initiative.

[0014] 2. The utility model is a coaxial twin-rotor flight principle demonstration helicopter teaching aid. By setting a connecting rod and a slide cylinder, the slide cylinder slides and rises on the outer wall of the connecting rod. When the rotor assembly rotates, the slide cylinder can rise under the push of the downward airflow, which can make the teaching aid more intuitive.

[0015] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 For this utility model Figure 2 Enlarged view of point B in the middle.

[0021] Explanation of the accompanying drawings: 1. base; 2. rotating frame; 3. motor; 4. gear; 5. annular rack; 6. connecting rod; 7. limiting groove; 8. slide cylinder; 9. limiting block; 11. fixing cylinder; 12. mounting cylinder; 13. damping ring; 14. rotating block; 15. rotor blade; 16. first fixed plate; 18. electric push rod; 19. second fixed plate; 20. support plate. DETAILED DESCRIPTION

[0022] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0023] A coaxial twin-rotor flight principle demonstration helicopter teaching aid according to an embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] For easier understanding, see Figures 1 to 4 The utility model provides an embodiment of a coaxial twin-rotor flight principle demonstration helicopter teaching aid, comprising a base 1 and a slide cylinder 8, the slide cylinder 8 is located at the top of the base 1, and the outer wall of the slide cylinder 8 is provided with two rotor assemblies; the rotor assembly comprises a fixed cylinder 11, four mounting cylinders 12, a rotating block 14, rotor blades 15, a first fixed plate 16, a second fixed plate 19 and an electric push rod 18, the fixed cylinder 11 is rotatably mounted on the outer wall of the slide cylinder 8, the four mounting cylinders 12 are fixedly mounted on the outer wall of the fixed cylinder 11, the rotating block 14 is rotatably mounted on one end of the inner wall of the mounting cylinder 12, the rotor blades 15 are fixedly mounted on one end of the rotating block 14, the first fixed plate 16 is fixedly mounted on the other end of the rotating block 14, the electric push rod 18 is fixedly mounted on one end of the inner wall of the mounting cylinder 12, and the second fixed plate 19 is fixedly mounted on the output end of the electric push rod 18.

[0026] It should be noted that by setting up the rotor assembly, the rotation of the two rotor assemblies in opposite directions can simulate the coaxial twin-rotor flight principle, and the angle of the rotor blade 15 can be adjusted by rotating the rotor blade 15, and multiple angles can be adjusted to test the flight effects at different angles, thereby enhancing the interactivity of the teaching aids, improving learning interest, and improving learning initiative; by setting up the rotating block 14, the angle of the rotor blade 15 can be adjusted, and by setting up the electric push rod 18, the second fixed plate 19 can be driven to press the first fixed plate 16, so as to fix the rotating block 14 and the angle of the rotor blade 15.

[0027] In some embodiments, Figure 3As shown, a damping ring 13 is fixedly installed on the outer wall of the rotating block 14, and the damping ring 13 is located between the outer wall of the rotating block 14 and the inner wall of the mounting tube 12. A support plate 20 is fixedly installed on the inner wall of the mounting tube 12, and the output end of the electric push rod 18 is slidably installed on the inner wall of the support plate 20. The adjacent end surfaces of the first fixed plate 16 and the second fixed plate 19 are frosted surfaces.

[0028] It should be noted that the damping ring 13 can be made of a rubber ring. By setting the damping ring 13, the resistance to the rotation of the rotating block 14 can be increased, making the adjustment angle more precise. The adjacent end surfaces of the first fixed plate 16 and the second fixed plate 19 are frosted surfaces, so that the second fixed plate 19 can better fix the first fixed plate 16.

[0029] In some embodiments, Figure 4 As shown, two rotating frames 2 are fixedly installed on the outer wall of the slide cylinder 8, a motor 3 is fixedly installed on the bottom end of the inner wall of the rotating frame 2, a gear 4 is fixedly installed on the output end of the motor 3, a fixed cylinder 11 is rotatably installed on the corresponding outer wall of the rotating frame 2, an annular rack 5 is fixedly installed on the inner wall of the fixed cylinder 11, and the annular rack 5 is meshed with the corresponding gear 4.

[0030] It should be noted that, by providing a motor 3, which can be a servo motor, the two motors 3 are started to drive the gears 4 to rotate, and the two gears 4 rotate in opposite directions, thereby driving the two rotor assemblies to rotate in opposite directions.

[0031] Example 2

[0032] In some embodiments, Figure 2 As shown, a connecting rod 6 is fixedly installed on the top of the base 1, the connecting rod 6 is in a cross shape, the inner wall of the slide tube 8 is in a cross shape, the slide tube 8 is slidably installed on the outer wall of the connecting rod 6, and limiting grooves 7 are provided on both sides of the connecting rod 6. Limiting blocks 9 are fixedly installed on the bottom ends of both sides of the inner wall of the slide tube 8, and the limiting blocks 9 are slidably installed on the corresponding groove walls of the limiting grooves 7.

[0033] It should be noted that by setting the connecting rod 6 and the slide cylinder 8, the slide cylinder 8 slides and rises on the outer wall of the connecting rod 6. When the rotor assembly rotates, the slide cylinder 8 can rise under the push of the downward airflow, which can make the teaching aid more intuitive.

[0034] In this example, the limiting groove 7 and the limiting block 9 can prevent the slide 8 from being separated from the connecting rod 6 from above.

[0035] Working principle: When using the coaxial twin-rotor flight principle demonstration teaching aid, the angle of the rotor blade 15 can be adjusted by rotating the rotor blade 15. After the adjustment is completed, the electric push rod 18 starts to drive the second fixed plate 19 to press the first fixed plate 16 to fix the rotating block 14. The two motors 3 start to drive the gears 4 to rotate. The two gears 4 rotate in opposite directions. The two gears 4 drive the two rotor assemblies to rotate in opposite directions through the annular rack 5.

[0036] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A coaxial twin-rotor flight principle demonstration helicopter teaching aid, characterized by: It comprises a base (1) and a slide cylinder (8), wherein the slide cylinder (8) is located at the top of the base (1), and the outer wall of the slide cylinder (8) is provided with two rotor assemblies; The rotor assembly comprises a fixed cylinder (11), four mounting cylinders (12), a rotating block (14), a rotor blade (15), a first fixed plate (16), a second fixed plate (19) and an electric push rod (18); the fixed cylinder (11) is rotatably mounted on the outer wall of the slide cylinder (8); the four mounting cylinders (12) are fixedly mounted on the outer wall of the fixed cylinder (11); the rotating block (14) is rotatably mounted on one end of the inner wall of the mounting cylinder (12); the rotor blade (15) is fixedly mounted on one end of the rotating block (14); the first fixed plate (16) is fixedly mounted on the other end of the rotating block (14); the electric push rod (18) is fixedly mounted on one end of the inner wall of the mounting cylinder (12); and the second fixed plate (19) is fixedly mounted on the output end of the electric push rod (18).

2. A coaxial twin-rotor flight principle demonstration helicopter teaching aid according to claim 1, characterized in that: A damping ring (13) is fixedly mounted on the outer wall of the rotating block (14), and the damping ring (13) is located between the outer wall of the rotating block (14) and the inner wall of the mounting tube (12). A support plate (20) is fixedly mounted on the inner wall of the mounting tube (12), and the output end of the electric push rod (18) is slidably mounted on the inner wall of the support plate (20).

3. The coaxial twin-rotor flight principle demonstration helicopter teaching aid according to claim 1, characterized in that: Two rotating frames (2) are fixedly mounted on the outer wall of the slide cylinder (8); a motor (3) is fixedly mounted on the bottom end of the inner wall of the rotating frame (2); a gear (4) is fixedly mounted on the output end of the motor (3); the fixed cylinder (11) is rotatably mounted on the outer wall of the corresponding rotating frame (2); an annular rack (5) is fixedly mounted on the inner wall of the fixed cylinder (11); and the annular rack (5) is meshed with the corresponding gear (4).

4. A coaxial twin-rotor flight principle demonstration helicopter teaching aid according to claim 3, characterized in that: A connecting rod (6) is fixedly mounted on the top of the base (1), and the connecting rod (6) is in a cross shape.

5. The coaxial twin-rotor flight principle demonstration helicopter teaching aid according to claim 4, characterized in that: The inner wall of the slide cylinder (8) is cross-shaped, and the slide cylinder (8) is slidably mounted on the outer wall of the connecting rod (6).

6. The coaxial twin-rotor flight principle demonstration helicopter teaching aid according to claim 4, characterized in that: Limiting grooves (7) are provided on both sides of the connecting rod (6), and limiting blocks (9) are fixedly installed at the bottom ends of both sides of the inner wall of the slide cylinder (8), and the limiting blocks (9) are slidably installed on the groove walls of the corresponding limiting grooves (7).

7. The coaxial twin-rotor flight principle demonstration helicopter teaching aid according to claim 1, characterized in that: The adjacent end surfaces of the first fixing plate (16) and the second fixing plate (19) are frosted surfaces.

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