An auxiliary device for facilitating automatic tilt measurement in helicopters

Abstract

This invention relates to the field of automatic tilting device technology, specifically to an auxiliary device for facilitating automatic tilting device measurement in helicopters. The device includes a centering shaft, a support platform on the lower outer side of the centering shaft, a shaft hole on the centering shaft, and multiple vertical grooves on the outer wall of the centering shaft. Movable ribs are movably connected within these vertical grooves, and a pressure plate is positioned above the movable ribs. A bracket located on one side of the movable rib is connected to the lower end of the pressure plate. The bracket is rotatably connected to the inner wall of the vertical groove via a first shaft. A strip-shaped groove is formed on the bracket between the first shaft and the pressure plate, and a second shaft slidably connected within this groove, positioned on the side wall of the movable rib. A control component is provided on the centering shaft to control the movable ribs to move away from or closer to the centering shaft axis. This invention uses the control component to control the movable ribs to secure the inner wall of the stationary ring of the automatic tilting device. Simultaneously, the movement of the movable ribs causes the pressure plate to swing and press against the upper end of the stationary ring, improving stability.

Description

Technical Field

[0001] This invention relates to the field of automatic tilting device technology, and more particularly to an auxiliary device for facilitating automatic tilting device measurement in helicopters. Background Technology

[0002] The automatic swashplate consists of two main parts: a non-rotating ring (also known as a stationary ring) and a rotating ring (also known as a moving ring); the non-rotating ring (usually located on the outside) is mounted on the rotor shaft and connected to the cyclic pitch and collective pitch control devices via a series of push-pull rods.

[0003] For example, a patent application with publication number CN119509768A, entitled "Testing Device and Method for Starting Force and Rotational Force Parameters of Helicopter Automatic Inclinator," was published on March 1, 2017. It includes: a holding system comprising a support table; a centering system comprising a centering shaft; and a support arm comprising a front connecting rod, a middle connecting rod, a rear connecting rod, and a toothed mechanism. A torque pin is slidably connected to the front connecting rod. This invention uses a rotating system and a support arm to drive the helicopter automatic inclinator to test the starting torque and rotational torque parameters, which can improve the accuracy of torque direction and value. However, in the above-mentioned literature, the fixed components used to fix the stationary ring of the automatic inclinator have unsatisfactory stability. When the rotating system drives the rotating ring of the automatic inclinator to rotate, it easily causes the stationary ring to move, resulting in significant errors and making it difficult to guarantee measurement accuracy. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide an auxiliary device for convenient measurement of the automatic tilter of a helicopter, so as to solve the problem of the need to improve the stability during automatic tilter detection.

[0005] To achieve the above objectives, the present invention provides an auxiliary device for facilitating the measurement of an automatic tilter of a helicopter, comprising a centering shaft, a support platform for supporting the automatic tilter provided on the lower outer side of the centering shaft, a shaft hole provided on the centering shaft, a plurality of vertical grooves provided on the outer wall of the centering shaft, a movable rib movably connected in the vertical groove, a pressure plate provided above the movable rib, a bracket located on one side of the movable rib connected to the lower end of the pressure plate, the bracket being integrally formed with the pressure plate, the bracket being rotatably connected to the inner wall of the vertical groove via a first shaft, a strip groove provided on the bracket located between the first shaft and the pressure plate, a second shaft provided on the movable rib being slidably connected in the strip groove, and a control component provided on the centering shaft for controlling the movable rib to move away from or closer to the axis of the centering shaft.

[0006] Optionally, an inclined slide groove is provided on the side wall of the vertical groove. The height of one end of the inclined slide groove, which is located near the axis of the centering shaft, is higher than the height of the other end of the inclined slide groove. A slider connected to the side wall of the moving rib is slidably connected in the inclined slide groove.

[0007] Optionally, the inclined groove is an arc-shaped groove.

[0008] Optionally, the pressure plate has a pressure protrusion on one side away from the centering shaft axis.

[0009] Optionally, both sides of the convex pressure plate are provided with swing plates that are rotatably connected to the pressure plate, and an elastic element is provided between the swing plates and the pressure plate, with the two swing plates forming a figure-eight shape.

[0010] Optionally, the swing plate is hinged to the pressure plate via a swing shaft, and the elastic element is a torsion spring sleeved on the swing shaft, with both ends of the torsion spring connected to the swing plate and the pressure plate respectively.

[0011] Optionally, the control component includes a rotating cylinder, the outer wall of which is provided with a protrusion that cooperates with the moving rib, the centering shaft is provided with an annular groove coaxially communicating with the vertical groove, the rotating cylinder is disposed in the annular groove, the lower end of the rotating cylinder is connected to a rotating ring, and the support platform is provided with a rotating component for controlling the rotation of the rotating ring.

[0012] Optionally, the rotating component includes a rotating motor, the output end of which is connected to a rotating shaft, and the rotating shaft is connected to the rotating ring via a transmission belt.

[0013] The beneficial effects of the present invention are as follows: The present invention provides an auxiliary device for convenient measurement of helicopter automatic swashplates. The automatic swashplate product to be measured is placed on the outside of the centering shaft and placed on the support platform. The moving rib is controlled by the control component to move away from the centering shaft axis. The moving rib fastens the inner wall of the stationary ring of the automatic swashplate product. While the moving rib moves, it drives the second shaft to move in the strip groove, which drives the pressure plate to swing and press the upper end of the stationary ring, thereby improving stability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0017] Figure 3 for Figure 2 Schematic diagram of the AA section structure;

[0018] Figure 4 This is a schematic diagram of the structure of the pressure plate and the movable rib in the vertical groove of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the pressure plate of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the inclined groove and the slider of the present invention;

[0021] Figure 7 This is a structural schematic diagram of the automatic tilting device product of the present invention;

[0022] Figure 8 This is a top view of the automatic tilting device product of the present invention;

[0023] Figure 9 for Figure 8 A schematic diagram of the BB section;

[0024] Figure 10 This is a schematic diagram of the structure of the stationary ring of the present invention.

[0025] In the diagram: 1. Support platform; 2. Centering shaft; 3. Shaft hole; 4. Vertical groove; 5. Moving rib; 6. Inclined slide; 7. Slider; 8. Pressure plate; 9. Pressing protrusion; 10. Strip groove; 11. First shaft; 12. Second shaft; 13. Rotating cylinder; 14. Protrusion; 15. Swing plate; 16. Rotating component; 17. Automatic tilter product; 18. Stationary ring; 19. Rotating ring; 20. Ring groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] like Figures 1 to 10 As shown, an auxiliary device for facilitating automatic tilt measurement of a helicopter includes a centering shaft 2. A support platform 1 for supporting the automatic tilt is provided on the lower outer side of the centering shaft 2. A shaft hole 3 is provided on the centering shaft 2. Multiple vertical grooves 4 are provided on the outer wall of the centering shaft 2. Movable ribs 5 are movably connected in the vertical grooves 4. A pressure plate 8 is provided above the movable ribs 5. A bracket located on one side of the movable ribs 5 is connected to the lower end of the pressure plate 8. The bracket and the pressure plate 8 are integrally formed. The bracket is rotatably connected to the inner wall of the vertical grooves 4 through a first shaft 11. A strip groove 10 is provided on the bracket between the first shaft 11 and the pressure plate 8. A second shaft 12 provided on the side wall of the movable ribs 5 is slidably connected in the strip groove 10. A control component is provided on the centering shaft 2 for controlling the movable ribs 5 to move away from or closer to the axis of the centering shaft 2.

[0029] Before measuring the automatic tilter product 17, the fixing device of the stationary ring 18 of the automatic tilter product 17 on the measuring device is removed and replaced with an auxiliary device. The central rotating shaft of the measuring device is passed through the shaft hole 3 of the centering shaft 2 on the auxiliary device. After the auxiliary device is fixed, it can be tightened with bolts and nuts. Then, the automatic tilter product 17 to be measured is placed on the outside of the centering shaft 2 and placed on the support platform 1. The moving rib 5 is controlled by the control component to move away from the axis of the centering shaft 2. The moving rib 5 is tightened against the inner wall of the stationary ring 18 of the automatic tilter product 17. While the moving rib 5 moves, it drives the second shaft 12 to move in the strip groove 10, which drives the pressure plate 8 to swing and press the upper end of the stationary ring 18, improving stability. When the rotating system drives the rotating ring 19 of the automatic tilter product 17 to rotate, it will not easily drive the stationary ring 18 to move, reducing errors, ensuring measurement accuracy, and ensuring that the measurement process is stable and reliable.

[0030] An inclined slide groove 6 is provided on the side wall of the vertical groove 4. The height of one end of the inclined slide groove 6, which is located near the axis of the centering shaft 2, is higher than the height of the other end of the inclined slide groove 6. A slider 7, which is slidably connected to the side wall of the moving rib 5, is slidably connected inside the inclined slide groove 6. The inclined slide groove 6 facilitates the moving rib 5 to move downwards while moving outwards, thereby better fixing the stationary ring 18 of the automatic tilting device product 17 and improving stability. The inclined slide groove 6 also facilitates the gradual reduction of the height of the second shaft 12 after the moving rib 5 moves outwards, so that it can reach a height no higher than that of the first shaft 11, which is conducive to better pressing.

[0031] The inclined chute 6 can be selected as an arc-shaped chute.

[0032] The pressure plate 8 has a pressure protrusion 9 on one side away from the axis of the centering shaft 2. The pressure protrusion 9 can cooperate with the eccentric hole on the stationary ring 18, reducing the possibility of the stationary ring 18 being driven and improving stability.

[0033] Both sides of the pressure protrusion 9 are provided with swing plates 15 that are rotatably connected to the pressure plate 8. An elastic element is provided between the swing plates 15 and the pressure plate 8. The two swing plates 15 are in a figure-eight shape. When the pressure protrusion 9 is facing downward, the swing plates 15 press and hold the stationary ring 18, which improves stability.

[0034] The swing plate 15 is hinged to the pressure plate 8 via a swing shaft. The elastic element can be a torsion spring sleeved on the swing shaft, with both ends of the torsion spring connected to the swing plate 15 and the pressure plate 8, respectively.

[0035] The elastic element can also be an elastic spring. One end of the elastic spring is connected to the middle of the side of the swing plate 15 facing the pressure plate 8, and the other end of the elastic spring is connected to the pressure plate 8.

[0036] The control component includes a rotating cylinder 13. The outer wall of the rotating cylinder 13 is provided with a protrusion 14 that cooperates with the moving rib 5. The centering shaft 2 is coaxially provided with an annular groove 20 that communicates with the vertical groove 4. The rotating cylinder 13 is disposed in the annular groove 20. The lower end of the rotating cylinder 13 is connected to a rotating ring. The support platform 1 is provided with a rotating component 16 for controlling the rotation of the rotating ring. When the rotating component 16 controls the rotation of the rotating ring and the rotating cylinder 13, the protrusion 14 pushes the moving rib 5 to move outward, so that the moving rib 5 can fix the inner wall of the stationary ring 18.

[0037] The rotating component 16 may include a rotating motor, the output end of which is connected to a rotating shaft. The rotating shaft and the rotating ring are connected by a transmission belt. When the rotating motor is started, it drives the rotating shaft to rotate, which in turn drives the rotating ring and the rotating cylinder 13 to rotate, causing the protrusion 14 to push the moving rib 5 outward, so that the moving rib 5 can fix the inner wall of the stationary ring 18.

[0038] The aforementioned rotating component 16 can also be replaced. The rotating component 16 may include a turbine disposed on the rotating ring. A worm gear is meshed and driven on one side of the turbine. A rotating handle or control motor is connected to the end of the worm gear. The rotating handle or control motor controls the worm gear to rotate, thereby driving the turbine and the turbine to rotate, and in turn driving the moving rib 5 to move outward to fix the inner wall of the stationary ring 18.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples. The invention is not limited to the above-described embodiments, that is, it does not mean that the invention must rely on the above methods and structures to be implemented. Under the concept of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0040] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An auxiliary device for facilitating automatic tilt measurement of helicopters, characterized in that, The device includes a centering shaft, a support platform for supporting the automatic tilter is provided on the lower outer side of the centering shaft, a shaft hole is provided on the centering shaft, a plurality of vertical grooves are provided on the outer wall of the centering shaft, a movable rib is movably connected in the vertical groove, a pressure plate is provided above the movable rib, a bracket located on one side of the movable rib is connected to the lower end of the pressure plate, the bracket and the pressure plate are integrally formed, the bracket is rotatably connected to the inner side wall of the vertical groove through a first shaft, a strip groove is provided on the bracket located between the first shaft and the pressure plate, a second shaft provided on the movable rib is slidably connected in the strip groove, and a control component is provided on the centering shaft for controlling the movable rib to move away from or closer to the axis of the centering shaft.

2. The auxiliary device for facilitating automatic tilt measurement of helicopters according to claim 1, characterized in that, An inclined slide groove is provided on the side wall of the vertical groove. The height of one end of the inclined slide groove, which is located near the axis of the centering shaft, is higher than the height of the other end of the inclined slide groove. A slider connected to the side wall of the moving rib is slidably connected in the inclined slide groove.

3. The auxiliary device for facilitating automatic tilt measurement of helicopters according to claim 2, characterized in that, The inclined chute is an arc-shaped chute.

4. The auxiliary device for facilitating automatic tilt measurement of helicopters according to claim 1, characterized in that, The pressure plate has a pressure protrusion on one side away from the centering shaft axis.

5. The auxiliary device for facilitating automatic tilt measurement of helicopters according to claim 4, characterized in that, Both sides of the convex pressure plate are provided with swing plates that are rotatably connected to the pressure plate. An elastic element is provided between the swing plates and the pressure plate, and the two swing plates are in a figure-eight shape.

6. The auxiliary device for facilitating automatic tilt measurement of helicopters according to claim 5, characterized in that, The swing plate is hinged to the pressure plate via a swing shaft, and the elastic element is a torsion spring sleeved on the swing shaft, with both ends of the torsion spring connected to the swing plate and the pressure plate respectively.

7. The auxiliary device for facilitating automatic tilt measurement of helicopters according to claim 1, characterized in that, The control component includes a rotating cylinder, the outer wall of which is provided with a protrusion that cooperates with the moving rib, the centering shaft is provided with an annular groove coaxially connected to the vertical groove, the rotating cylinder is disposed in the annular groove, the lower end of the rotating cylinder is connected to a rotating ring, and the support platform is provided with a rotating component for controlling the rotation of the rotating ring.

8. The auxiliary device for facilitating automatic tilt measurement of helicopters according to claim 7, characterized in that, The rotating component includes a rotating motor, the output end of which is connected to a rotating shaft, and the rotating shaft is connected to the rotating ring via a transmission belt.

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