A helicopter collective control system

Abstract

The present invention discloses a helicopter collective pitch control system, comprising a fixed shaft, a support seat, a first fixed plate, a protective device and a reinforcement device, wherein the fixed shaft is provided with symmetrically distributed control levers, the control levers are provided with symmetrically distributed connecting rods, and the connecting rods are connected to the first fixed plate, the ends of the fixed shaft are provided with symmetrically distributed connecting seats, the bottoms of the connecting seats are provided with connecting heads, the support seat is located directly below the fixed shaft, and the surface of the support seat is provided with through holes for the connecting heads to pass through, the protective device comprises a fixing ring and a fixing bolt, and the fixing ring is installed in the through hole through the fixing bolt; the reinforcement device comprises a nut and an external thread; the beneficial effects of the present invention are as follows: the designed protective device helps to realize the installation of the fixing ring, and the fixing ring protects the through hole; the designed reinforcement device increases the stability of the fixed shaft installation, and ensures the precise operation of the control system.

Description

Technical Field

[0001] The invention belongs to the technical field of helicopter collective control, and in particular relates to a helicopter collective control system. Background Art

[0002] The control system is one of the important systems of a helicopter. Its operation essentially changes the size and direction of the rotor thrust by changing the installation angle of the rotor (propeller) blades, thereby achieving the purpose of maintaining or changing the flight attitude of the helicopter.

[0003] The existing helicopter collective control system has the following deficiencies when in use:

[0004] The operation form is single, and the intention of transmitting the action is not clear enough; at the same time, the structure of the cooperative mechanism is not compact, and the parts structure is large, so that a large number of helicopters are occupied by the mechanical structure.

[0005] Furthermore, the perforations formed on the surface of the support seat are susceptible to wear, which reduces the stability of the connector and affects the accuracy of the operation of the control system. Summary of the invention

[0006] The object of the present invention is to provide a helicopter collective pitch control system to solve the problem that the perforations on the surface of the support seat proposed in the above background technology are easily subject to wear, which reduces the stability of the connector and affects the accuracy of the operation of the control system.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a helicopter collective pitch control system, comprising a fixed shaft, a support seat, a first fixed plate, a protective device and a reinforcement device, the fixed shaft is provided with symmetrically distributed joysticks, the joysticks are installed with symmetrically distributed connecting rods, and the connecting rods are connected to the first fixed plate, the ends of the fixed shaft are provided with symmetrically distributed connecting seats, the bottom of the connecting seat is provided with a connecting head, the support seat is located directly below the fixed shaft, and the surface of the support seat is provided with a through hole for the connecting head to pass through, the protective device comprises a fixing ring and a fixing bolt, and the fixing ring is installed in the through hole through the fixing bolt; the reinforcement device comprises a nut and an external thread, the bottom of the connecting head is provided with an external thread, and the support seat is provided with a nut screwed with the external thread; the first A second fixed plate is fixed to the bottom of a fixed plate, and a first movable rod and a second movable rod are movably arranged on the second fixed plate, a horizontal seat is arranged on one side of the support seat, a connecting shaft 1 is arranged on the horizontal seat, a connecting shaft 2 is arranged on one side of the connecting shaft 1, a first L-shaped fixing plate and a fifth L-shaped fixing plate are arranged on the connecting shaft 2 and the connecting shaft 1, and a fourth L-shaped fixing plate and a second L-shaped fixing plate are arranged on the connecting shaft 2; a fixing member is arranged on the fixed shaft, an intermediate rod is movably arranged on the fixing member, and the intermediate rod is connected to the intermediate L-shaped fixing plate, and a third movable rod is arranged on the intermediate L-shaped fixing plate; it also includes a propeller base connected to the propeller, and one side of the outer wall of the propeller base is provided with protruding blocks 1, 2, 3 and 4, and the third movable rod is connected to the protruding block 2.

[0008] Preferably, the end of the nut is larger than the diameter of the through hole, and the connector is a columnar structure.

[0009] Preferably, the end of the support seat is provided with symmetrically distributed fixing ears, and the surface of the fixing ears is provided with bolt holes.

[0010] Preferably, a handle is provided at the end of the joystick, and the inner diameter of the handle matches the outer diameter of the joystick.

[0011] Preferably, the fourth L-shaped fixing plate is movably connected to the fourth movable rod, and the second L-shaped fixing plate is connected to the fifth movable rod.

[0012] Preferably, the cross section of the first fixing plate is rectangular, and the second fixing plate is a "T"-shaped structure.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) Effectively utilize the right angle and lever principle to change the horizontal force into the vertical force, reducing the original structure size by 50%, greatly saving the space occupied by the mechanical structure;

[0015] (2) The designed protective device helps to install the fixing ring and protects against perforation through the fixing ring;

[0016] (3) The designed reinforcement device increases the stability of the fixed shaft installation and ensures the precise operation of the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the partial structure of the oblique view of the present invention;

[0021] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of area A;

[0022] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure of area B;

[0023] Figure 7 It is a schematic diagram of the cross-sectional structure of the connection between the connector and the support seat of the present invention;

[0024] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of region C;

[0025] In the figure: 1. joystick; 2. fixed shaft; 3. support seat; 4. connector; 5. connecting seat; 6. bracket; 7. fixing piece; 8. connecting rod; 9. handle; 10. first fixed plate; 11. second fixed plate; 12. first movable rod; 13. third movable rod; 14. extending block one; 15. extending block two; 16. extending block three; 17. propeller base; 18. extending block four; 19. second movable rod; 20. middle rod; 22. fourth movable rod; 23. fifth movable rod; 24. fourth L-shaped fixing plate; 25. first L-shaped fixing plate; 26. middle L-shaped fixing plate; 27. fifth L-shaped fixing plate; 28. second L-shaped fixing plate; 29. ​​connecting shaft two; 30. fixing ring; 31. fixing bolt; 32. nut; 33. external thread; 34. connecting shaft one; 35. horizontal seat. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 8 The present invention provides a technical solution: a helicopter collective pitch control system, comprising a fixed shaft 2, a support seat 3, a first fixed plate 10, a protective device and a reinforcement device, a symmetrically distributed joystick 1 is arranged on the fixed shaft 2, a symmetrically distributed connecting rod 8 is installed on the joystick 1, and the connecting rod 8 is connected to the first fixed plate 10, a symmetrically distributed connecting seat 5 is arranged at the end of the fixed shaft 2, a connecting head 4 is arranged at the bottom of the connecting seat 5, the support seat 3 is located directly below the fixed shaft 2, and a surface of the support seat 3 is provided with a connecting head 4. The protective device includes a fixing ring 30 and a fixing bolt 31, and the fixing ring 30 is installed in the through hole through the fixing bolt 31, which helps to achieve the installation of the fixing ring 30, and the fixing ring 30 plays a role in protecting the through hole; the reinforcing device includes a nut 32 and an external thread 33, the bottom of the connector 4 is provided with an external thread 33, and the support seat 3 is provided with a nut 32 that is threadedly engaged with the external thread 33. The connector 4 passes through the fixing ring 30, and the nut 32 is picked up so that the nut 32 and the external thread 33 on the connector 4 are screwed together and tightened. , increasing the stability of the installation of the fixed shaft 2 and ensuring the precise operation of the control system; a second fixed plate 11 is fixed to the bottom of the first fixed plate 10, and a first movable rod 12 and a second movable rod 19 are movably arranged on the second fixed plate 11, a horizontal seat 35 is arranged on one side of the support seat 3, a connecting shaft 1 34 is arranged on the horizontal seat 35, a connecting shaft 29 is arranged on one side of the connecting shaft 1 34, a first L-shaped fixing plate 25 and a fifth L-shaped fixing plate 27 are arranged on the connecting shaft 29 and the connecting shaft 1 34, and a connecting shaft 29 A fourth L-shaped fixing plate 24 and a second L-shaped fixing plate 28 are arranged on it; a fixing member 7 is arranged on the fixed shaft 2, and an intermediate rod 20 is movably arranged on the fixing member 7, and the intermediate rod 20 is connected to the intermediate L-shaped fixing plate 26, and a third movable rod 13 is arranged on the intermediate L-shaped fixing plate 26; it also includes a propeller base 17 connected to the propeller, and one side of the outer wall of the propeller base 17 is provided with an extension block 14, an extension block 2 15, an extension block 3 16 and an extension block 4 18, and the third movable rod 13 is connected to the extension block 2 15.

[0028] In this embodiment, preferably, the end of the nut 32 is larger than the diameter of the through hole, and the connector 4 is a columnar structure, which facilitates the insertion of the columnar connector 4.

[0029] In this embodiment, preferably, the end of the support seat 3 is provided with symmetrically distributed fixing ears, and the surface of the fixing ears is provided with bolt holes, which are convenient for fastening the fixing ears by passing bolts through the bolt holes, thereby achieving a stable installation of the support seat 3.

[0030] In this embodiment, preferably, a handle 9 is provided at the end of the joystick 1 , and the inner diameter of the handle 9 matches the outer diameter of the joystick 1 , which facilitates the connection between the handle 9 and the joystick 1 and makes it more convenient to operate the joystick 1 through the handle 9 .

[0031] In this embodiment, preferably, the fourth L-shaped fixing plate 24 and the fourth movable rod 22 are movably connected, the fourth movable rod 22 is connected to the extension block 14, the second L-shaped fixing plate 28 and the fifth movable rod 23 are connected, and the fifth movable rod 23 is connected to the extension block 3 16, so as to facilitate the left and right steering control of the helicopter.

[0032] In this embodiment, preferably, the cross section of the first fixing plate 10 is a rectangle, and the second fixing plate 11 is a “T”-shaped structure, so as to facilitate the matching of the first fixing plate 10 and the second fixing plate 11 .

[0033] The working principle and use process of the present invention are as follows: the fixing ring 30 is installed in the through hole through the fixing bolt 31 to realize the installation of the fixing ring 30, and the fixing ring 30 protects the through hole. The connector 4 passes through the fixing ring 30, and the nut 32 is picked up, so that the nut 32 and the external thread 33 on the connector 4 are screwed together and tightened, thereby increasing the stability of the installation of the fixed shaft 2;

[0034] Holding the handle 9, the fixed shaft 2 is pushed forward through the joystick 1. When the fixed shaft 2 moves, the fixing member 7 is driven to move upward. When the fixing member 7 moves upward, the intermediate rod 20 is driven to move backward. When the intermediate rod 20 moves, the intermediate L-shaped fixing piece 26 is driven to tilt upward. When the intermediate L-shaped fixing piece 26 tilts upward, the third movable rod 13 connected to the second extension block 15 is driven to tilt upward, and the higher end of the propeller installed on the propeller base 17 is directed toward the second extension block 15, thereby realizing the forward movement of the helicopter;

[0035] Holding the handle 9, the fixed shaft 2 is pushed backward through the joystick 1. When the fixed shaft 2 moves, the fixing member 7 is driven downward. When the fixing member 7 moves downward, the intermediate rod 20 is driven forward. When the intermediate rod 20 moves, the intermediate L-shaped fixing piece 26 is driven downward. When the intermediate L-shaped fixing piece 26 moves downward, the third movable rod 13 connected to the second extension block 15 is driven downward, and the higher end of the propeller installed on the propeller base 17 is directed toward the fourth extension block 18, thereby realizing the backward movement of the helicopter;

[0036] Holding the handle 9, the fixed shaft 2 is driven to move to the left through the joystick 1. When the fixed shaft 2 moves to the left, the second fixed plate 11 is driven to rotate clockwise through the first fixed plate 10. When the second fixed plate 11 rotates clockwise, the second movable rod 19 is pushed forward, and the first movable rod 12 moves backward. When the second movable rod 19 moves, it drives the second L-shaped fixing plate 28 to tilt upward. The second L-shaped fixing plate 28 tilts upward and drives the third and fifth movable rods 23 connected to the extension block 16 upward, and the higher end of the propeller installed on the propeller base 17 faces the extension block 16, thereby realizing the left turn of the helicopter;

[0037] Holding the handle 9, the fixed shaft 2 is driven to move to the right through the joystick 1. When the fixed shaft 2 moves to the right, the second fixed plate 11 is driven to rotate counterclockwise through the first fixed plate 10. When the second fixed plate 11 rotates counterclockwise, the second movable rod 19 moves backward and the first movable rod 12 moves forward. When the second movable rod 19 moves, it drives the second L-shaped fixing plate 28 downward. The second L-shaped fixing plate 28 drives the third and fifth movable rods 23 connected to the protruding block 16 downward, and the higher end of the propeller installed on the propeller base 17 faces the protruding block 1, thereby realizing the right turn of the helicopter.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A helicopter collective control system, characterized in that: The invention comprises a fixed shaft (2), a support seat (3), and a first fixed plate (10); the fixed shaft (2) is provided with symmetrically distributed operating rods (1); the operating rods (1) are installed with symmetrically distributed connecting rods (8), and the connecting rods (8) are connected to the first fixed plate (10); the end of the fixed shaft (2) is provided with symmetrically distributed connecting seats (5); the bottom of the connecting seat (5) is provided with a connecting head (4); the support seat (3) is located directly below the fixed shaft (2); and the surface of the support seat (3) is provided with a through hole for the connecting head (4) to pass through; the fixed shaft (2) can rotate in the connecting head (4); the fixed shaft (2) is provided with a fixing member (7); when the fixed shaft (2) rotates, the fixing member (7) is driven to move downward or upward; a second fixed plate (11) is fixed to the bottom of the first fixed plate (10); a first movable rod (12) and a second movable rod (19) are movably provided on the second fixed plate (11); the support seat (3) A horizontal seat (35) is provided on one side of the connecting shaft (2), a connecting shaft 1 (34) is provided on the horizontal seat (35), a connecting shaft 2 (29) is provided on one side of the connecting shaft 1 (34), a first L-shaped fixing plate (25) and a fifth L-shaped fixing plate (27) are provided on the connecting shaft 2 (29) and the connecting shaft 1 (34), a fourth L-shaped fixing plate (24) and a second L-shaped fixing plate (28) are provided on the connecting shaft 2 (29); a fixing member (7) is provided on the fixing shaft (2), the fixing member (7) an intermediate rod (20) is movably arranged on the intermediate rod (20), and the intermediate rod (20) is connected to the intermediate L-shaped fixing plate (26), and a third movable rod (13) is arranged on the intermediate L-shaped fixing plate (26); it also includes a propeller base (17) connected to the propeller, and one side of the outer wall of the propeller base (17) is provided with a protruding block 1 (14), a protruding block 2 (15), a protruding block 3 (16) and a protruding block 4 (18), and the third movable rod (13) is connected to the protruding block 2 (15).

2. A helicopter collective control system according to claim 1, characterized in that: A protective device and a reinforcing device, wherein the protective device comprises a fixing ring (30) and a fixing bolt (31), wherein the fixing ring (30) is installed in the through hole via the fixing bolt (31); the reinforcing device comprises a nut (32) and an external thread (33), wherein the bottom of the connector (4) is provided with an external thread (33), and the support seat (3) is provided with a nut (32) threadably engaged with the external thread (33).

3. A helicopter collective control system according to claim 2, characterized in that: The end of the nut (32) is larger than the diameter of the through hole, and the connecting head (4) is a columnar structure.

4. A helicopter collective control system according to claim 1, characterized in that: The end of the support seat (3) is provided with symmetrically distributed fixing ears, and the surface of the fixing ears is provided with bolt holes.

5. A helicopter collective control system according to claim 1, characterized in that: A handle (9) is provided at the end of the joystick (1), and the inner diameter of the handle (9) matches the outer diameter of the joystick (1).

6. A helicopter collective control system according to claim 1, characterized in that: The fourth L-shaped fixing plate (24) is movably connected to the fourth movable rod (22), and the second L-shaped fixing plate (28) is connected to the fifth movable rod (23).

7. A helicopter collective control system according to claim 1, characterized in that: The cross section of the first fixing plate (10) is rectangular, and the second fixing plate (11) is a "T"-shaped structure.

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