Four-axis turntable for aircraft simulation test

Abstract

The utility model discloses a four-axis turntable for aircraft simulation test, which comprises a three-axis turntable, a platform support, a guide rail and a rotating platform, and is characterized in that the three-axis turntable is used for realizing three-degree-of-freedom movement; the platform support is arranged on the periphery of the three-axis rotary table. The guide rail is arranged on the platform support and is an arc-shaped guide rail with the position of the three-axis rotary table as the circle center. The rotating platform is movably arranged on the guide rail and rotates around the three-axis rotary table in the process of moving along the guide rail. The rotating platform moves along the arc-shaped guide rail with the three-axis turntable as the circle center, so that the rotating platform rotates around the three-axis turntable, the four-axis turntable with higher degree of freedom is formed through the combination of the rotating platform and the three-axis platform, a high-power motor is not needed to drive the rotating platform to rotate, the structure is simple, and the operation is convenient. Usage is convenient, and energy and cost can be saved.

Description

Technical Field

[0001] This utility model relates to the field of simulation test turntable technology, and in particular to a four-axis turntable for aircraft simulation testing. Background Technology

[0002] A simulation test turntable is a complex, modern piece of equipment integrating optoelectronics and mechanical systems. It plays a crucial role in aircraft development through hardware-in-the-loop simulation and testing in the aerospace field. It can simulate various attitude angles and motions of an aircraft, reproduce its dynamic characteristics during motion, and repeatedly test the performance of the aircraft's guidance system, control system, and related components. This allows for the acquisition of sufficient experimental data, which is then used to redesign and improve the system to meet the overall performance requirements of the aircraft design.

[0003] Simulation test turntables have multiple branches, which can be classified according to the type of energy source, control signal, or degrees of freedom of the servo system. Quadcopter turntables, as a branch of simulation test turntables, generally have high degrees of freedom, allowing for more realistic simulation of various attitudes of aircraft in flight. However, traditional quadcopter turntables typically use a combination of a rotating axis system and a frame structure for simulation testing, resulting in a complex system, strict power requirements for the motors, and high cost. Utility Model Content

[0004] The purpose of this invention is to provide a four-axis turntable for aircraft simulation testing. Addressing the problems of complex traditional four-axis turntable systems, stringent motor power requirements, and high costs, this invention achieves the rotation of the turntable around the three-axis turntable by moving the rotating platform along an arc-shaped guide rail centered on the three-axis turntable. The combination of the rotating platform and the three-axis platform forms a four-axis turntable, eliminating the need for a high-power motor to drive the rotation of the turntable. This results in a simple structure and lower cost.

[0005] To achieve the above objectives, this utility model provides a four-axis turntable for aircraft simulation testing, comprising:

[0006] A three-axis rotary table, which is used to realize three degrees of freedom of motion;

[0007] A platform support is provided, which is disposed around the periphery of the three-axis rotary table;

[0008] The guide rail, which is mounted to the platform support, is configured as an arc-shaped guide rail with the position of the three-axis turntable as the center; and

[0009] A rotating platform is movably mounted on the guide rail and rotates around the three-axis turntable as it moves along the guide rail.

[0010] Optionally, the four-axis turntable further includes a base plate, and the three-axis turntable and the platform support are both mounted on the base plate.

[0011] Optionally, a shim is provided between the three-axis rotary table and the base plate.

[0012] Optionally, an adjustment pad is provided between the platform support and the base plate.

[0013] Optionally, the platform support is provided with a guide rail seat, and the guide rail is disposed on the guide rail seat;

[0014] The guide rail base is provided with a first limiting mechanism and a second limiting mechanism at both ends, which are used to limit the rotating platform.

[0015] Optionally, the platform support includes a platform base plate and a guide rail mounting plate, the platform base plate is disposed on the base plate, the guide rail seat is disposed on the guide rail mounting plate, and the platform base plate and the guide rail mounting plate are connected by profiles.

[0016] Optionally, rollers are provided under the platform base plate.

[0017] Optionally, both the platform base plate and the guide rail mounting plate are constructed as arc-shaped flat plates with the position of the three-axis turntable as the center.

[0018] Optionally, the three-axis rotary table includes:

[0019] Base;

[0020] A first rotating shaft is rotatably disposed on the upper end of the base and is rotatable relative to the base about a first rotation axis;

[0021] A first bracket is disposed at the upper end of the first rotating shaft;

[0022] A second support is disposed inside the first support, and second rotating shafts are provided on both sides of the second support. These second rotating shafts are rotatably connected to the two sides of the first support, allowing the second support to rotate relative to the first support about a second rotation axis.

[0023] A third rotating shaft is rotatably disposed at one end of the second bracket and is rotatable relative to the second bracket about a third rotation axis. A clamp is provided at one end of the third rotating shaft.

[0024] Wherein, the second rotation axis is perpendicular to the first rotation axis; the third rotation axis is perpendicular to both the first rotation axis and the second rotation axis.

[0025] Optionally, a counterweight is provided at the end of the second bracket opposite to the third rotating shaft.

[0026] Compared with the prior art, the present invention has at least the following technical effects:

[0027] By moving the rotary platform along an arc-shaped guide rail centered on the three-axis turntable, the rotary platform's rotation around the three-axis turntable is achieved. The combination of the rotary platform and the three-axis platform forms a four-axis turntable with higher degrees of freedom, without the need for a high-power motor to drive the rotary platform. The structure is simple, easy to use, and helps save energy and costs. Attached Figure Description

[0028] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings in the following description are one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0029] Figure 1 This is a three-dimensional schematic diagram of a four-axis rotary table according to a specific embodiment of the present utility model.

[0030] Figure 2 This is a three-dimensional schematic diagram of a platform support according to a specific embodiment of the present utility model;

[0031] Figure 3 This is a three-dimensional schematic diagram of a three-axis rotary table according to a specific embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100: Four-axis rotary table

[0034] 10: Three-axis rotary table

[0035] 11: Base

[0036] 12: First pivot

[0037] 13: First stent

[0038] 14: Second stent

[0039] 15: Second pivot

[0040] 16: Third pivot

[0041] 17: Fixture

[0042] 18: Counterweight

[0043] 20: Platform support

[0044] 21: Platform base plate

[0045] 22: Guide rail mounting plate

[0046] 23: Profiles

[0047] 24: Roller

[0048] 25: Vertical pole

[0049] 26: Horizontal bar

[0050] 30: Guide rail

[0051] 31: Guide rail base

[0052] 32: First limiting mechanism

[0053] 33: Second limiting mechanism

[0054] 40: Base plate

[0055] 41: Shims

[0056] 42: Adjustable height pad

[0057] 50: Rotating platform

[0058] RA1: First axis of rotation

[0059] RA2: Second axis of rotation

[0060] RA3: Third axis of rotation Detailed Implementation

[0061] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of a four-axis turntable for aircraft simulation testing proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0062] This embodiment provides a four-axis rotary table 100, such as Figure 1As shown, the four-axis rotary table 100 includes a three-axis rotary table 10, a platform support 20, a guide rail 30, and a rotary platform 50. The three-axis rotary table 10 is used to achieve three degrees of freedom motion. The platform support 20 is disposed around the periphery of the three-axis rotary table 10. The guide rail 30 is disposed on the platform support 20 and is constructed as an arc-shaped guide rail with the position of the three-axis rotary table 10 as the center. The rotary platform 50 is movably disposed on the guide rail 30 and rotates around the three-axis rotary table 10 while moving along the guide rail 30.

[0063] like Figure 1 As shown, the four-axis rotary table 100 also includes a base plate 40, and both the three-axis rotary table 10 and the platform support 20 can be mounted on the base plate 40. For example, a shim 41 can be provided between the bottom of the three-axis rotary table 10 and the upper surface of the base plate 40. Multiple shims 41 can be evenly distributed between the three-axis rotary table 10 and the base plate 40, serving two purposes: firstly, to support the weight of the three-axis rotary table 10, prevent the transmission of vibration, and provide shock absorption, thus ensuring the motion accuracy of the three-axis rotary table 10; secondly, to adjust the horizontal height of the three-axis rotary table 10.

[0064] For example, a height adjustment pad 42 can be provided between the bottom of the platform support 20 and the upper surface of the base plate 40. Multiple height adjustment pads 42 can be evenly distributed between the platform support 20 and the base plate 40. The height adjustment pads 42 can be used to adjust the horizontal height of the platform support 20.

[0065] Specifically, such as Figure 2 As shown, the platform support 20 includes a platform base plate 21 and a guide rail mounting plate 22. The platform base plate 21 is disposed on the base plate 40, and the guide rail seat 31 is disposed on the guide rail mounting plate 22. The platform base plate 21 and the guide rail mounting plate 22 are connected by a profile 23.

[0066] The profile 23 includes multiple longitudinally arranged vertical bars 25, the two ends of which are connected to the platform base plate 21 and the guide rail mounting plate 22 respectively by screws, for example. The profile 23 also includes multiple transversely arranged horizontal bars 26, each horizontal bar 26 being positioned between two vertical bars 25. Multiple horizontal bars 26 can be positioned between two vertical bars 25 to ensure the overall structural stability of the profile 23. The profile 23 can be manufactured, for example, from iron, steel, or other metal materials with certain strength and toughness through processes such as rolling, extrusion, and casting. The profile 23 has fixed external dimensions, a specific cross-sectional shape, and certain mechanical and physical properties, which can save material while ensuring the connection strength between the platform base plate 21 and the guide rail mounting plate 22.

[0067] Multiple rollers 24 can be evenly arranged below the platform base plate 21 to facilitate the handling of the platform support 20. Furthermore, the position of the platform support 20 relative to the three-axis turntable 10 can be easily adjusted, ensuring that the three-axis turntable 10 is centered on the guide rail 30, guaranteeing that the rotating platform 50 rotates around the three-axis turntable 10 when moving on the guide rail 30. An adjusting pad 42 can be provided between the base plate 40 and the platform base plate 21. By ensuring that the height of the adjusting pad 42 is greater than the height of the rollers 24, the platform support 20 can be fixed to the base plate 40.

[0068] Corresponding to the guide rail 30, both the base plate 40 and the guide rail mounting plate 22 can be constructed as arc-shaped flat plates with the position of the three-axis turntable 10 as the center. This facilitates ensuring the positional relationship between the guide rail 30 and the three-axis turntable 10 and helps to save costs.

[0069] like Figure 2 As shown, a guide rail seat 31 can be provided on the guide rail mounting plate 22 of the platform support 20. The guide rail seat 31 can be constructed with the same arc shape as the guide rail 30 to facilitate the installation of the guide rail 30 onto the guide rail seat 31. A first limiting mechanism 32 and a second limiting mechanism 33 can be respectively provided at both ends of the guide rail seat 31 to limit the rotating platform 50 and ensure that the rotating platform 50 does not detach from the guide rail 30 during movement.

[0070] Specifically, such as Figure 3 As shown, the three-axis turntable 10 includes a base 11, a first rotating shaft 12, a first support 13, a second support 14, a second rotating shaft 15, and a third rotating shaft 16.

[0071] The first rotating shaft 12 is rotatably disposed on the upper end of the base 11 and is rotatable relative to the base 11 about a first rotation axis RA1. The first bracket 13 is disposed on the upper end of the first rotating shaft 12, and the first bracket 13 may be constructed in a U-shape, for example.

[0072] The second bracket 14 can be disposed inside the first bracket 13. The second bracket 14 has a second rotating shaft 15 on both sides. The second rotating shaft 15 is rotatably connected to both sides of the first bracket 13. The inner end face of the second rotating shaft 15 can be connected to the second bracket 14, so that the second bracket 14 can rotate relative to the first bracket 13 around the second rotation axis RA2.

[0073] The third rotating shaft 16 is rotatably mounted at one end of the second support 14 and is rotatable about the third rotation axis RA3 relative to the second support 14. A clamp 17 is provided at one end of the third rotating shaft 16. In order to balance the weight of the clamp 17 and the third rotating shaft 16, ensure the stable operation of the three-axis turntable 10, and avoid affecting the motion accuracy, a counterweight 18 can be provided at the end of the second support 14 opposite to the third rotating shaft 16.

[0074] like Figure 3 As shown, the second support 14 can be constructed in a U-shape, and counterweights 18 can be provided on both sides of the end of the second support 14 opposite to the third rotating shaft 16 to improve the overall balance of the second support 14 and ensure the stability of the second support 14 when rotating relative to the first support 13. The counterweights 18 can be detachably installed to the second support 14 by screws or other means, so that different counterweights 18 can be replaced according to the different weights of the clamp 17.

[0075] To enable the three-axis turntable 10 to rotate in three different directions, the second rotation axis RA2 is perpendicular to the first rotation axis RA1, and the third rotation axis RA3 is perpendicular to both the first rotation axis RA1 and the second rotation axis RA2. By giving the three-axis turntable 10 three degrees of freedom for angular motion, the three angular motion attitudes of the aircraft can be simulated. By moving the rotating platform 50 along the guide rail 30, the motion of the target being tracked by the aircraft can be further simulated.

[0076] This invention achieves the rotation of the rotating platform around the three-axis turntable by moving the rotating platform along an arc-shaped guide rail centered on the three-axis turntable. The combination of the rotating platform and the three-axis platform forms a four-axis turntable with higher degrees of freedom, without the need for a high-power motor to drive the rotating platform. The structure is simple, easy to use, and helps to save energy and costs, representing a significant improvement over existing technologies.

[0077] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0078] In the description of this utility model, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0079] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0080] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0081] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A four-axis rotary table for aircraft simulation testing, characterized in that, include: A three-axis rotary table, which is used to realize three degrees of freedom of motion; A platform support is provided, which is disposed around the periphery of the three-axis rotary table; The guide rail is disposed on the platform support and is constructed as an arc-shaped guide rail with the position of the three-axis turntable as the center; and A rotating platform is movably mounted on the guide rail and rotates around the three-axis turntable as it moves along the guide rail.

2. The four-axis rotary table according to claim 1, characterized in that, The four-axis turntable also includes a base plate, and the three-axis turntable and the platform support are both mounted on the base plate.

3. The four-axis rotary table according to claim 2, characterized in that, A shim is provided between the three-axis rotary table and the base plate.

4. The four-axis rotary table according to claim 2, characterized in that, An adjustable pad is provided between the platform support and the base plate.

5. The four-axis rotary table according to claim 2, characterized in that, The platform support is provided with a guide rail seat, and the guide rail is disposed on the guide rail seat; The guide rail base is provided with a first limiting mechanism and a second limiting mechanism at both ends, which are used to limit the rotating platform.

6. The four-axis rotary table according to claim 5, characterized in that, The platform support includes a platform base plate and a guide rail mounting plate. The platform base plate is disposed on the base plate, and the guide rail seat is disposed on the guide rail mounting plate. The platform base plate and the guide rail mounting plate are connected by profiles.

7. The four-axis rotary table according to claim 6, characterized in that, The platform base plate is equipped with rollers.

8. The four-axis rotary table according to claim 6, characterized in that, Both the platform base plate and the guide rail mounting plate are constructed as arc-shaped flat plates with the position of the three-axis turntable as the center.

9. The four-axis rotary table according to claim 1, characterized in that, The three-axis rotary table includes: Base; A first rotating shaft is rotatably disposed on the upper end of the base and is rotatable relative to the base about a first rotation axis; A first bracket is disposed at the upper end of the first rotating shaft; A second support is disposed inside the first support, and second rotating shafts are provided on both sides of the second support. These second rotating shafts are rotatably connected to the two sides of the first support, allowing the second support to rotate relative to the first support about a second rotation axis. A third rotating shaft is rotatably disposed at one end of the second bracket and is rotatable relative to the second bracket about a third rotation axis. A clamp is provided at one end of the third rotating shaft. Wherein, the second rotation axis is perpendicular to the first rotation axis; the third rotation axis is perpendicular to both the first rotation axis and the second rotation axis.

10. The four-axis rotary table according to claim 9, characterized in that, The second bracket is provided with a counterweight at the end opposite to the third rotating shaft.

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