Rotor variable-pitch pull rod device with indication function and aircraft

Abstract

The utility model relates to a rotor variable-pitch pull rod device with an indication function and an aircraft, relates to the technical field of flight equipment, and solves the problems that in the prior art, a rotor variable-pitch pull rod cannot be accurately and quantitatively adjusted and needs to be repeatedly adjusted, so that time is consumed. The rotor variable-pitch pull rod device comprises a scale assembly, an indication assembly and a rotor variable-pitch pull rod, the scale assembly comprises a scale identification piece; the indication assembly comprises a fixed end connected with a rotor wing variable pitch pull rod and an indication end connected with the fixed end; the indicating end can rotate along with the rotor wing variable-pitch pull rod, and the indicating end can indicate angle scales on the scale marking piece; the aircraft comprises a main shaft and the rotor wing variable-pitch pull rod device with the indication function, wherein the main shaft is connected with the rotor wing variable-pitch pull rod device with the indication function. According to the utility model, the rotor variable pitch pull rod can be accurately and quantitatively adjusted, and the adjusting time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of flight equipment, in particular to a rotor pitch change pull rod device with an indication function and an aircraft. Background Art

[0002] The rotor pitch change pull rod is a key part of the helicopter flight control system. It connects the pilot's input (such as the control stick) and the pitch change mechanism of the rotor blade. When the pilot operates the control stick, the rotor pitch change pull rod transmits this signal to the pitch change mechanism of the rotor blade, thereby changing the angle of attack of the blade, and further changing the lift of the rotor and the tilt direction of the rotor cone. If the rotor pitch change pull rod is not adjusted properly, it may cause the rotor blades to rotate on different conical surfaces, that is, the cone-off phenomenon occurs, affecting the flight stability and performance of the helicopter.

[0003] In the prior art, since the adjustment amount of the rotor pitch change pull rod cannot be quantitatively determined, the adjustment of the rotor pitch change pull rod mainly relies on the experience of technicians to roughly adjust the rotor pitch change pull rod, and accurate and quantitative adjustment cannot be achieved, which requires high requirements for technicians; the adjustment of the rotor pitch change pull rod often needs to be adjusted repeatedly, which takes a lot of time. Summary of the Utility Model

[0004] In view of the above analysis, the utility model aims to provide a rotor pitch change pull rod device with an indication function and an aircraft, so as to solve the problem that the rotor pitch change pull rod in the prior art cannot be accurately and quantitatively adjusted and needs to be adjusted repeatedly, resulting in time consumption.

[0005] On the one hand, the utility model provides a rotor pitch change pull rod device with an indication function, including a scale component, an indication component and a rotor pitch change pull rod;

[0006] The scale component includes a scale identification piece;

[0007] The indication component includes a fixed end connected to the rotor pitch change pull rod and an indication end connected to the fixed end. The indication end can rotate with the rotor pitch change pull rod, and the indication end is used to indicate the scale on the scale identification piece.

[0008] Further, the scale component further includes a connecting piece;

[0009] The connecting piece is connected to the scale identification piece.

[0010] Further, the plane where the scale identification piece is located is perpendicular to the rotation axis of the rotor pitch change pull rod.

[0011] Further, the shape of the scale identification piece is arc-shaped, and when the indication end rotates with the rotor pitch change pull rod, the center of the scale identification piece is concentric with the rotation center of the indication end.

[0012] Further, the scale component further includes an intermediate section;

[0013] The intermediate section includes a first connector, a second connector, and a third connector.

[0014] The first connector is connected to the connecting member, and both the second connector and the third connector are connected to the scale marking member.

[0015] Further, the portion of the intermediate section close to the rotor pitch control rod is provided in a curved shape that can avoid the rotor pitch control rod.

[0016] Further, the first connector, the second connector, and the third connector are arranged in a "Y" shape.

[0017] Further, the second connector and the third connector trisect the scale marking member.

[0018] Further, when the indicating end rotates with the rotor pitch control rod, the plane where the arc formed during the rotation of the indicating end is parallel to the plane where the scale marking member is located.

[0019] On the other hand, the present invention provides an aircraft, including a main shaft and the above-mentioned rotor pitch control rod device with an indicating function, and the main shaft is connected to the rotor pitch control rod device with an indicating function.

[0020] The technical solution of the present invention can at least achieve one of the following effects:

[0021] (1) For the rotor pitch control rod device with an indicating function of the present invention, by setting a mutually cooperating scale component and an indicating component, the adjustment amount of the rotor pitch control rod can be quantitatively reflected; during the rotation adjustment process of the rotor pitch control rod, the indicating end can rotate with the rotor pitch control rod, and the scale indicated by the indicating end on the scale marking member changes with the rotation of the rotor pitch control rod. By the change of the scale indicated by the indicating end, the rotation adjustment amount of the rotor pitch control rod can be quantitatively determined, so as to judge the change amount of the rotor tip height, and then the rotor pitch control rod can be accurately adjusted, improving the accuracy of the adjustment of the rotor pitch control rod;

[0022] (2) For the rotor pitch control rod device with an indicating function of the present invention, by the cooperation of the indicating component and the scale component, the proportional relationship between the change value of the scale indicated by the indicating end on the scale marking member and the change amount of the rotor tip height can be determined, and then the adjustment amount of the rotor pitch control rod can be determined, realizing the accurate determination of the adjustment amount of the rotor pitch control rod, so as to adjust the rotor tip height, and improving the accuracy of the adjustment of the rotor pitch control rod.

[0023] (3) The aircraft of the present utility model connects the scale assembly to the main shaft through a fixing member, so as to adjust the height of the rotor wing tip through the rotor pitch change pull rod device with an indicating function, improving the accuracy of adjustment; the fixing member is detachably connected to the main shaft, and the fixed end is detachably connected to the rotor pitch change pull rod, so that the scale assembly can be separated from the main shaft, and the fixed end can be separated from the rotor pitch change pull rod, avoiding affecting the flight conditions of the aircraft.

[0024] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the subsequent description, and some advantages can be made obvious from the description, or can be understood by implementing the present utility model. The purpose and other advantages of the present utility model can be achieved and obtained through the content specifically pointed out in the description and the drawings. Brief Description of the Drawings

[0025] The drawings are only for the purpose of showing specific embodiments, and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs represent the same components.

[0026] Figure 1 is the overall structural schematic diagram of the rotor pitch change pull rod device with an indicating function in Embodiment 1 of the present utility model;

[0027] Figure 2 is the structural schematic diagram of the scale assembly in Embodiment 1 of the present utility model;

[0028] Figure 3 is the overall structural schematic diagram of the aircraft in Embodiment 2 of the present utility model.

[0029] Reference Signs:

[0030] 1 - scale assembly; 11 - scale identification member; 12 - connecting member; 13 - middle section; 131 - first connection head; 132 - second connection head; 133 - third connection head; 2 - indicating assembly; 21 - fixed end; 22 - indicating end; 3 - fixing member; 4 - rotor pitch change pull rod; 41 - upper threaded member; 42 - rotating cylinder; 43 - lower threaded member; 5 - main shaft. Detailed Embodiments

[0031] The following specifically describes the preferred embodiments of the present utility model with reference to the drawings. The drawings form a part of the present utility model and are used together with the embodiments of the present utility model to explain the principle of the present utility model, and are not used to limit the scope of the present utility model.

[0032] Embodiment 1

[0033] A specific embodiment of the present utility model discloses a rotor pitch change pull rod device with an indicating function, asFigure 1 As shown in the figure, it includes a scale component 1, an indicating component 2, and a rotor pitch control rod 4. Among them, the scale component 1 includes a scale marking member 11, and the indicating component 2 includes a fixed end 21 connected to the rotor pitch control rod 4 and an indicating end 22 connected to the fixed end 21; the indicating end 22 can rotate with the rotor pitch control rod 4, and the indicating end 22 can indicate the scale on the scale marking member 11.

[0034] Preferably, the shape of the scale marking member 11 is arc-shaped, the scale on the scale marking member 11 is an angular scale, and the accuracy is 3° - 5°. When the indicating end 22 rotates with the rotor pitch control rod 4, the center of the scale marking member 11 is concentric with the rotation center of the indicating end 22, so that the indicating end 22 rotates along the scale marking member 11, and the angular scale on the scale marking member 11 can represent the rotation angle of the indicating end 22, thereby determining the adjustment amount of the rotor pitch control rod 4 according to the rotation angle of the indicating end 22.

[0035] In this embodiment, the fixed end 21 is detachably connected to the rotor pitch control rod 4, such as snap connection, buckle connection, etc.; during the rotation adjustment of the rotor pitch control rod 4, the indicating end 22 can rotate with the rotor pitch control rod 4.

[0036] The scale component 1 further includes a connecting member 12, and the connecting member 12 is connected to the scale marking member 11.

[0037] Preferably, as Figure 2 shown, the connecting member 12 is connected to the scale marking member 11 through an intermediate section 13. The intermediate section 13 includes a first connecting head 131, a second connecting head 132, and a third connecting head 133. The first connecting head 131 is connected to the connecting member 12, and both the second connecting head 132 and the third connecting head 133 are connected to the scale marking member 11. The first connecting head (131), the second connecting head (132), and the third connecting head (133) are arranged in a "Y" shape. By setting the intermediate section 13, the connection stability between the connecting member 12 and the scale marking member 11 is increased.

[0038] Preferably, the part of the intermediate section 13 close to the rotor pitch control rod 4 is set to be curved to avoid the rotor pitch control rod 4, providing space for the rotation of the rotor pitch control rod 4 and preventing the rotor pitch control rod 4 from colliding with the intermediate section 13 during rotation.

[0039] Preferably, the second connecting head 132 and the third connecting head 133 trisect the scale marking member 11, so that the second connecting head 132 and the third connecting head 133 are evenly stressed, increasing the support stability of the second connecting head 132 and the third connecting head 133 to the scale marking member 11.

[0040] The rotor pitch control rod 4 includes an upper threaded part 41, a rotating cylinder 42, and a lower threaded part 43. One end of the upper threaded part 41 is connected to the rotor, and the other end is threadedly connected to the rotating cylinder 42; one end of the lower threaded part 43 is connected to the moving disk, and the other end is threadedly connected to the rotating cylinder 42. Rotating the rotating cylinder 42 can make the upper threaded part 41 and the lower threaded part 43 approach or move away from the rotating cylinder 42 simultaneously along the axial direction of the rotating cylinder 42, thereby adjusting the height of the rotor wing tip.

[0041] The fixed end 21 is connected to the rotating cylinder 42. When adjusting the rotating cylinder 42, the fixed end 21 rotates with the rotating cylinder 42, causing the scale indicated by the indicating end 22 on the scale marking member 11 to change.

[0042] It can be understood that there is a proportional relationship between the adjustment amount of the rotor pitch control rod 4 and the change amount of the wing tip height. By cooperating the indicating assembly 2 with the scale assembly 1, the proportional relationship between the change value of the scale indicated by the indicating end 22 on the scale marking member 11 and the change amount of the rotor wing tip height can be determined, and then the proportional relationship between the adjustment amount of the rotor pitch control rod 4 and the change amount of the rotor wing tip height can be determined. Rotate the rotating cylinder 42 to make the indicating end 22 rotate with the rotating cylinder 42, measure the change value of the scale indicated by the indicating end 22 on the scale marking member 11 and the change value of the rotor wing tip height with the rotation of the rotating cylinder 42, so as to obtain the proportional relationship between the adjustment amount of the rotor pitch control rod 4 and the change amount of the wing tip height.

[0043] The rotor pitch control rod device with an indicating function further includes a fixing member 3. The fixing member 3 is connected to the connecting member 12, and the fixing member 3 is used to fix the scale assembly 1.

[0044] Preferably, when the indicating end 22 rotates with the rotor pitch control rod 4, the plane where the arc formed during the rotation of the indicating end 22 is parallel to the plane where the scale marking member 11 is located, which is convenient for the operator to read the scale indicated by the indicating end 22 from the scale marking member 11.

[0045] In this embodiment, the change of the scale indicated by the indicating end 22 on the scale marking member 11 can reflect the rotational adjustment amount of the rotor pitch control rod 4, and further reflect the change amount of the rotor wing tip height. Thus, the rotor pitch control rod 4 can be quantitatively adjusted according to the scale indicated by the indicating end 22 on the scale marking member 11, improving the accuracy of the adjustment of the rotor pitch control rod 4, avoiding repeated adjustments, and saving the time required for adjustment.

[0046] When adjusting the rotor pitch pull rod device with an indication function, according to the proportional relationship between the adjustment amount of the rotor pitch pull rod 4 and the change amount of the wing tip height, determine the angle by which the indication end 22 rotates along the scale marking member 11 when the rotor wing tip height reaches the qualified standard. Thus, adjust the rotor pitch pull rod 4 according to the scale change indicated by the indication end 22 on the scale marking member 11, improving the accuracy of adjusting the rotor pitch pull rod 4, enabling quantitative adjustment of the rotor pitch pull rod 4, avoiding repeated adjustment of the rotor pitch pull rod 4, and saving the time required for adjustment.

[0047] Embodiment 2

[0048] A specific embodiment of the present invention discloses an aircraft, such as Figure 3 shown, including a main shaft 5 and the above-mentioned rotor pitch pull rod device with an indication function. The main shaft 5 is connected to the rotor pitch pull rod device with an indication function.

[0049] The fixing member 3 connects the scale assembly 1 to the main shaft 5, so that the scale assembly 1 is fixed relative to the main shaft 5. The fixing member 3 is detachably connected to the main shaft 5. Exemplarily, the fixing member 3 is a fixing bolt, and the fixing member 3 connects the connecting member 12 to the connecting seat 51 on the main shaft 5; Exemplarily, the fixing member 3 is a magnetic fixing member, the connecting member 12 is made of a magnetic material, and the fixing member 3 magnetically connects the connecting member 12 and the main shaft 5.

[0050] Compared with the prior art, the rotor pitch pull rod device with an indication function of the present invention can quantitatively reflect the adjustment amount of the rotor pitch pull rod 4 and further reflect the change amount of the rotor wing tip height by setting the mutually cooperating scale assembly 1 and indication assembly 2. When the rotor pitch pull rod 4 is in a stationary state, the indication end 22 can indicate the scale on the scale marking member 11. During the rotation adjustment process of the rotor pitch pull rod 4, the fixed end 21 is in a relatively stationary state with the rotor pitch pull rod 4, enabling the indication end 22 to rotate with the rotor pitch pull rod 4. The scale indicated by the indication end 22 on the scale marking member 11 changes with the rotation of the rotor pitch pull rod 4. The rotation adjustment amount of the rotor pitch pull rod 4 can be quantitatively determined through the scale change indicated by the indication end 22, so that the rotor pitch pull rod 4 can be accurately adjusted, improving the accuracy of adjusting the rotor pitch pull rod 4.

[0051] The variable pitch pull rod device of the rotor with an indication function according to the present utility model quantitatively reflects the adjustment amount of the variable pitch pull rod 4 of the rotor by arranging the mutually cooperating indication assembly 2 and scale assembly 1; during the process of the rotation adjustment of the variable pitch pull rod 4 of the rotor, the indication end 22 can rotate along with the variable pitch pull rod 4 of the rotor, and the scale indicated by the indication end 22 on the scale marking member 11 changes along with the rotation of the variable pitch pull rod 4 of the rotor. The rotation adjustment amount of the variable pitch pull rod 4 of the rotor can be quantitatively determined through the change of the scale indicated by the indication end 22, so as to judge the change amount of the height of the rotor wing tip, and further the variable pitch pull rod 4 of the rotor can be accurately adjusted, improving the accuracy of the adjustment of the variable pitch pull rod 4 of the rotor; through the cooperation of the indication assembly 2 and the scale assembly 1, the proportional relationship between the change value of the scale indicated by the indication end 22 on the scale marking member 11 and the change amount of the height of the rotor wing tip can be determined, and further the adjustment amount of the variable pitch pull rod 4 of the rotor can be determined, realizing the accurate determination of the adjustment amount of the variable pitch pull rod 4 of the rotor, so as to adjust the height of the rotor wing tip and improve the accuracy of the adjustment of the variable pitch pull rod 4 of the rotor.

[0052] For the aircraft according to the present utility model, the scale assembly 1 is connected to the main shaft 5 through the fixing member 3, so as to adjust the height of the rotor wing tip through the variable pitch pull rod device of the rotor with an indication function and improve the accuracy of the adjustment; the fixing member 3 is detachably connected to the main shaft 5, and the fixing end 21 is detachably connected to the variable pitch pull rod 4 of the rotor, so that the scale assembly 1 can be separated from the main shaft 5, and the fixing end 21 can be separated from the variable pitch pull rod 4 of the rotor, avoiding affecting the flight condition of the aircraft.

[0053] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A rotor pitch pull rod device with an indication function, characterized in that, It includes a scale component (1), an indicating component (2) and a rotor pitch control rod (4); The scale component (1) includes a scale marking member (11); The indicating component (2) includes a fixed end (21) connected to the rotor pitch control rod (4) and an indicating end (22) connected to the fixed end (21). The indicating end (22) can rotate with the rotor pitch control rod (4), and the indicating end (22) is used to indicate the scale on the scale marking member (11).

2. The variable pitch pull rod device of the rotor with an indication function according to claim 1, characterized in that, The scale component (1) further includes a connecting member (12); The connecting member (12) is connected to the scale marking member (11).

3. The variable pitch pull rod device of the rotor with an indication function according to claim 1, characterized in that, The plane where the scale marking member (11) is located is perpendicular to the axis of rotation of the rotor pitch control rod (4).

4. The variable pitch pull rod device of the rotor with an indication function according to claim 1, characterized in that, The shape of the scale marking member (11) is arc-shaped. When the indicating end (22) rotates with the rotor pitch control rod (4), the center of the scale marking member (11) is concentric with the rotation center of the indicating end (22).

5. The variable pitch pull rod device of the rotor with an indication function according to claim 2, characterized in that, The scale component (1) further includes an intermediate section (13); The intermediate section (13) includes a first connector (131), a second connector (132) and a third connector (133); The first connector (131) is connected to the connecting member (12), and both the second connector (132) and the third connector (133) are connected to the scale marking member (11).

6. The variable pitch pull rod device of the rotor with an indication function according to claim 5, characterized in that, The part of the intermediate section (13) close to the rotor pitch control rod (4) is set to be in a curved shape that can avoid the rotor pitch control rod (4).

7. The rotor pitch control rod device with an indication function according to claim 5, characterized in that, The first connector (131), the second connector (132) and the third connector (133) are arranged in a "Y" shape.

8. The variable pitch pull rod device for a rotor with an indication function according to claim 5, characterized in that, The second connector (132) and the third connector (133) trisect the scale marking member (11).

9. The variable pitch pull rod device of the rotor with an indication function according to claim 1, characterized in that, When the indicating end (22) rotates with the rotor pitch control rod (4), the plane where the arc formed during the rotation of the indicating end (22) is located is parallel to the plane where the scale marking member (11) is located.

10. An aircraft, characterized in that, It includes a main shaft (5) and a rotor pitch control rod device with an indicating function according to any one of claims 1-8, and the main shaft (5) is connected to the rotor pitch control rod device with an indicating function.

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