Three-axis flight simulation rotary table

Abstract

The utility model relates to the technical field of test rotary tables, and particularly discloses a three-axis flight simulation rotary table which comprises a stand column and a U-shaped support, the lower end of the U-shaped support is rotationally connected to the upper end of the stand column through a first rotating shaft, a first movable frame is arranged at the upper end of the U-shaped support, and the two ends of the first movable frame are rotationally connected with the inner side wall of the U-shaped support through third rotating shafts. A second movable frame is arranged in the first movable frame, the two ends of the second movable frame are rotationally connected with the inner side wall of the first movable frame through a fourth rotating shaft, a first ring sleeve structure is arranged around the axis of the first rotating shaft, a second ring sleeve structure is arranged around the axis of the third rotating shaft, and a third ring sleeve structure is arranged around the axis of the fourth rotating shaft. When the U-shaped support, the first movable frame and the second movable frame rotate, the ring sleeve structures can support and limit the U-shaped support, the first movable frame and the second movable frame, the stability of the U-shaped support, the first movable frame and the second movable frame during rotation is improved, and the test precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of test turntables, in particular to a three-axis flight simulation turntable. Background Art

[0002] The flight simulation turntable is a high-precision complex control system used to simulate the various movements and postures of aircraft in the air. High-precision sensors such as gyroscopes and seekers are installed on the turntable to convert the electrical signals of the various postures of the aircraft in the air into mechanical rotation of the turntable, so that the gyroscopes, seekers and other sensitive aircraft attitude angles move. "High frequency response, ultra-low speed, wide speed regulation, and high precision" have become the main performance indicators and development direction of the simulation turntable.

[0003] The three-axis flight simulation turntable mainly includes a mechanical frame and a drive system. The mechanical frame is usually composed of three mutually perpendicular rotating frames: the inner axis, the middle axis, and the outer axis. Each frame can rotate independently, corresponding to the movement of the aircraft around three orthogonal axes. The drive system is used to control the independent rotation of each frame and adjust the rotation angle, speed, and acceleration of each axis. Since each frame is mostly connected by a single axis, when there is a large suspended area between the two connected frames and the equipment fixed in one of the frames is heavier, the shaft will be under great pressure during the rotation of the frame. After working for a long time, the frame will tilt when rotating, affecting the accuracy of the measurement. Utility Model Content

[0004] In view of the above problems, the utility model proposes a three-axis flight simulation turntable to solve the shortcomings of the existing test turntable. During the test, when there is a large suspended area between two connected frames and the equipment fixed in one of the frames is heavy, the shaft will be under great pressure during the rotation of the frames. After long-term work, the frames will tilt during rotation, affecting the accuracy of measurement.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a three-axis flight simulation turntable, including a column and a U-shaped bracket, the lower end of the U-shaped bracket is rotatably connected to the upper end of the column through a first rotating shaft, a first movable frame is provided at the upper end of the U-shaped bracket, two ends of the first movable frame are rotatably connected to the inner side wall of the U-shaped bracket through a third rotating shaft, a second movable frame is provided in the first movable frame, and two ends of the second movable frame are rotatably connected to the inner side wall of the first movable frame through a fourth rotating shaft;

[0006] A first ring structure is provided around the axis of the first rotating shaft to improve the rotation stability of the U-shaped bracket, a second ring structure is provided around the axis of the third rotating shaft to improve the rotation stability of the first movable frame, and a third ring structure is provided around the axis of the fourth rotating shaft to improve the rotation stability of the second movable frame.

[0007] Further improvements are: the first ring structure includes a first limiting ring arranged at the upper end of the column, the first limiting ring is sleeved on the outside of the column and fixedly connected to the column, the axis of the first limiting ring coincides with the axis of the first rotating shaft, and a first annular groove is opened at the upper end of the first limiting ring, and the first annular groove is slidably matched with a first sliding pin structure fixedly connected to the lower end of the U-shaped bracket.

[0008] Further improvement is that: the second ring structure includes a second limiting ring arranged on one side of the first movable frame, the second limiting ring is fixedly connected to the inner wall of the U-shaped bracket, the axis of the second limiting ring coincides with the axis of the third rotating shaft, and the second limiting ring is provided with a second annular groove facing the side of the first movable frame, and the second annular groove is slidably matched with a second sliding pin structure fixedly connected to the outside of the first movable frame.

[0009] A further improvement is that the third ring structure includes a third limiting ring arranged on one side of the second movable frame, the third limiting ring is fixedly connected to the inner wall of the first movable frame, the axis of the third limiting ring coincides with the axis of the fourth rotating shaft, and the third limiting ring is provided with a third annular groove facing the side of the second movable frame, and the third annular groove is slidably matched with a third sliding pin structure fixedly connected to the outer side of the second movable frame.

[0010] A further improvement is that the first sliding pin structure, the second sliding pin structure and the third sliding pin structure all include a fixing column, and a ball is provided at one end of the fixing column.

[0011] Further improvements are: a main motor for controlling the rotation of the U-shaped bracket is provided in the column, the output end of the main motor is fixedly connected to the first rotating shaft, a first motor is provided on the outside of the U-shaped bracket, the output end of the first motor is fixedly connected to the third rotating shaft, a second motor is provided on the outside of the first movable frame, and the output end of the second motor is fixedly connected to the fourth rotating shaft.

[0012] A further improvement is that a control panel is provided on the outer side of the column, a base is provided at the lower end of the column, and a plurality of fixing bolts are assembled on the base.

[0013] The beneficial effects of the utility model are:

[0014] When the U-shaped bracket, the first movable frame and the second movable frame rotate, each ring structure can support and limit the U-shaped bracket, the first movable frame and the second movable frame, thereby improving the stability of the U-shaped bracket, the first movable frame and the second movable frame during rotation and improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural diagram of the center column of the utility model.

[0017] Figure 2 It is a structural diagram of the first movable frame in the utility model.

[0018] Figure 3 It is a structural diagram of the second movable frame in the utility model.

[0019] Among them: 1. base; 2. column; 3. control panel; 4. first limit ring; 5. fixed column; 6. ball; 7. first rotating shaft; 8. U-shaped bracket; 9. first annular groove; 10. first movable frame; 11. second movable frame; 12. second limit ring; 13. second annular groove; 14. third limit ring; 15. first motor; 16. second motor; 17. third annular groove; 18. third rotating shaft; 19. fourth rotating shaft. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0021] according to Figure 1 , 2 As shown in Figure 3, a three-axis flight simulation turntable is proposed in this embodiment, including a column 2 and a U-shaped bracket 8, the lower end of the U-shaped bracket 8 is rotatably connected to the upper end of the column 2 through a first rotating shaft 7, a first movable frame 10 is provided at the upper end of the U-shaped bracket 8, both ends of the first movable frame 10 are rotatably connected to the inner wall of the U-shaped bracket 8 through a third rotating shaft 18, a second movable frame 11 is provided in the first movable frame 10, both ends of the second movable frame 11 are rotatably connected to the inner wall of the first movable frame 10 through a fourth rotating shaft 19; the second movable frame 11 rotates around the axis of the fourth rotating shaft 19, the first movable frame 10 can rotate around the axis of the third rotating shaft 18, and the U-shaped bracket 8 is installed at the upper end of the column 2 and can rotate around the axis of the first rotating shaft 7.

[0022] A first ring structure for improving the rotation stability of the U-shaped bracket 8 is provided around the axis of the first rotating shaft 7, a second ring structure for improving the rotation stability of the first movable frame 10 is provided around the axis of the third rotating shaft 18, and a third ring structure for improving the rotation stability of the second movable frame 11 is provided around the axis of the fourth rotating shaft 19. Each ring structure is respectively arranged between the column 2 and the U-shaped bracket 8, between the U-shaped bracket 8 and the first movable frame 10, and between the first movable frame 10 and the second movable frame 11, and can support and limit the U-shaped bracket 8, the first movable frame 10 and the second movable frame 11 when the U-shaped bracket 8, the first movable frame 10 and the second movable frame 11 rotate, thereby improving the stability of the U-shaped bracket 8, the first movable frame 10 and the second movable frame 11 when rotating, and improving the test accuracy.

[0023] The specific structure of the first ring structure is shown in the following description.

[0024] The first ring structure includes a first limiting ring 4 arranged at the upper end of the column 2, the first limiting ring 4 is sleeved on the outside of the column 2 and fixedly connected to the column 2, the axis of the first limiting ring 4 coincides with the axis of the first rotating shaft 7, and a first annular groove 9 is opened at the upper end of the first limiting ring 4, and the first annular groove 9 is slidably matched with a first sliding pin structure fixedly connected to the lower end of the U-shaped bracket 8.

[0025] The first sliding pin structure at the lower end of the U-shaped bracket 8 is inserted into the first annular groove 9 at the upper end of the first limiting ring 4. When the first rotating shaft 7 rotates with the U-shaped bracket 8 on the upper end of the column 2, the first sliding pin structure will slide along the U-shaped bracket 8. Without affecting the rotation of the U-shaped bracket 8, the first annular groove 9 will limit the U-shaped bracket 8 by cooperating with the first sliding pin structure, thereby improving the stability of the U-shaped bracket 8 during rotation.

[0026] The specific structure of the second ring structure is shown in the following description.

[0027] The second ring structure includes a second limiting ring 12 arranged on one side of the first movable frame 10. The second limiting ring 12 is fixedly connected to the inner wall of the U-shaped bracket 8. The axis of the second limiting ring 12 coincides with the axis of the third rotating shaft 18. The second limiting ring 12 is provided with a second annular groove 13 facing the side of the first movable frame 10. The second annular groove 13 is slidably matched with a second sliding pin structure fixedly connected to the outer side of the first movable frame 10.

[0028] The second sliding pin structure on the outer side of the first movable frame 10 is inserted into the second annular groove 13 provided on the outer side of the second limiting ring 12. When the third rotating shaft 18 rotates with the first movable frame 10 in the U-shaped bracket 8, the second sliding pin structure will slide along the second annular groove 13. Without affecting the rotation of the first movable frame 10, the second annular groove 13 will limit the first movable frame 10 by cooperating with the second sliding pin structure, thereby improving the stability of the first movable frame 10 during rotation.

[0029] The specific structure of the third ring structure is shown in the following description.

[0030] The third ring structure includes a third limiting ring 14 arranged on one side of the second movable frame 11. The third limiting ring 14 is fixedly connected to the inner wall of the first movable frame 10. The axis of the third limiting ring 14 coincides with the axis of the fourth rotating shaft 19. The third limiting ring 14 is provided with a third annular groove 17 facing the side of the second movable frame 11. The third annular groove 17 is slidably matched with a third sliding pin structure fixedly connected to the outer side of the second movable frame 11.

[0031] The working principle of the third ring-in-ring structure is basically the same as that of the first ring-in-ring structure and the second ring-in-ring structure, and will not be explained in detail here.

[0032] It should be further explained that the first sliding pin structure, the second sliding pin structure and the third sliding pin structure all include a fixed column 5, and a ball 6 is provided at one end of the fixed column 5. The fixed column 5 is arranged between the U-shaped bracket 8 and the first limiting ring 4, between the first movable frame 10 and the second limiting ring 12, and between the third limiting ring 14 and the second movable frame 11. Each fixed column 5 is fixedly connected to the lower end surface of the U-shaped bracket 8, the outer side wall of the first movable frame 10 and the outer side wall of the second movable frame 11, respectively, and the U-shaped bracket 8 at the other end of the fixed column 5 is matched with the first annular groove 9, the second annular groove 13 and the third annular groove 17 respectively. The rolling matching method has a small friction coefficient and a longer working life.

[0033] Regarding the rotation control of the first rotating shaft 7, the second annular groove 13 and the fourth rotating shaft 19, please refer to the following description.

[0034] A main motor for controlling the rotation of the U-shaped bracket 8 is provided inside the column 2, and the output end of the main motor is fixedly connected to the first rotating shaft 7. A first motor 15 is provided on the outside of the U-shaped bracket 8, and the output end of the first motor 15 is fixedly connected to the third rotating shaft 18. A second motor 16 is provided on the outside of the first movable frame 10, and the output end of the second motor 16 is fixedly connected to the fourth rotating shaft 19.

[0035] The rotation of the U-shaped bracket 8 is controlled by the main motor, the rotation of the first movable frame 10 is controlled by the first motor 15, and the rotation of the second movable frame 11 is controlled by the first motor 15. The three-axis adjustment operation mode is highly flexible and can be used for closed-loop simulation of aircraft attitude simulation, inertial navigation system testing and inertial navigation seeker target detection.

[0036] About column 2:

[0037] A control panel 3 is arranged outside the column 2, and a base 1 is arranged at the lower end of the column 2. A plurality of fixing bolts are assembled on the base 1. The base 1 is mounted on the test bench by bolt connection, and is convenient for disassembly, assembly and replacement.

[0038] How this application works:

[0039] The second movable frame 11 rotates around the axis of the fourth rotating shaft 19, the first movable frame 10 can rotate around the axis of the third rotating shaft 18, and the U-shaped bracket 8 is installed on the upper end of the column 2 and can rotate around the axis of the first rotating shaft 7. The respective ring structures are respectively arranged between the column 2 and the U-shaped bracket 8, between the U-shaped bracket 8 and the first movable frame 10, and between the first movable frame 10 and the second movable frame 11. When the U-shaped bracket 8, the first movable frame 10 and the second movable frame 11 rotate, the U-shaped bracket 8, the first movable frame 10 and the second movable frame 11 in the rotating state can be supported and limited, thereby improving the stability of the U-shaped bracket 8, the first movable frame 10 and the second movable frame 11 during rotation and improving the test accuracy.

[0040] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0041] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A three-axis flight simulation turntable, comprising a column (2) and a U-shaped bracket (8), wherein the lower end of the U-shaped bracket (8) is rotatably connected to the upper end of the column (2) via a first rotating shaft (7), characterized in that: A first movable frame (10) is provided at the upper end of the U-shaped bracket (8), and two ends of the first movable frame (10) are rotatably connected to the inner wall of the U-shaped bracket (8) via a third rotating shaft (18); a second movable frame (11) is provided inside the first movable frame (10), and two ends of the second movable frame (11) are rotatably connected to the inner wall of the first movable frame (10) via a fourth rotating shaft (19); A first ring structure is provided around the axis of the first rotating shaft (7) for improving the rotation stability of the U-shaped bracket (8), a second ring structure is provided around the axis of the third rotating shaft (18) for improving the rotation stability of the first movable frame (10), and a third ring structure is provided around the axis of the fourth rotating shaft (19) for improving the rotation stability of the second movable frame (11).

2. A three-axis flight simulation turntable according to claim 1, characterized in that: The first ring structure comprises a first limiting ring (4) arranged at the upper end of the column (2); the first limiting ring (4) is sleeved on the outer side of the column (2) and is fixedly connected to the column (2); the axis of the first limiting ring (4) coincides with the axis of the first rotating shaft (7); a first annular groove (9) is formed at the upper end of the first limiting ring (4); the first annular groove (9) is slidably matched with a first sliding pin structure fixedly connected to the lower end of the U-shaped bracket (8).

3. A three-axis flight simulation turntable according to claim 2, characterized in that: The second ring structure comprises a second limiting ring (12) arranged on one side of the first movable frame (10); the second limiting ring (12) is fixedly connected to the inner wall of the U-shaped bracket (8); the axis of the second limiting ring (12) coincides with the axis of the third rotating shaft (18); the second limiting ring (12) is provided with a second annular groove (13) on the side facing the first movable frame (10); the second annular groove (13) is slidably matched with a second sliding pin structure fixedly connected to the outer side of the first movable frame (10).

4. The three-axis flight simulation turntable according to claim 3, characterized in that: The third ring structure comprises a third limiting ring (14) arranged on one side of the second movable frame (11); the third limiting ring (14) is fixedly connected to the inner side wall of the first movable frame (10); the axis of the third limiting ring (14) coincides with the axis of the fourth rotating shaft (19); the third limiting ring (14) is provided with a third annular groove (17) on the side facing the second movable frame (11); the third annular groove (17) is slidably matched with a third sliding pin structure fixedly connected to the outer side of the second movable frame (11).

5. A three-axis flight simulation turntable according to claim 4, characterized in that: The first sliding pin structure, the second sliding pin structure and the third sliding pin structure all comprise a fixing column (5), and a ball (6) is provided at one end of the fixing column (5).

6. The three-axis flight simulation turntable according to claim 1, characterized in that: A main motor for controlling the rotation of the U-shaped bracket (8) is arranged inside the column (2), and the output end of the main motor is fixedly connected to the first rotating shaft (7). A first motor (15) is arranged outside the U-shaped bracket (8), and the output end of the first motor (15) is fixedly connected to the third rotating shaft (18). A second motor (16) is arranged outside the first movable frame (10), and the output end of the second motor (16) is fixedly connected to the fourth rotating shaft (19).

7. The three-axis flight simulation turntable according to claim 1, characterized in that: A control panel (3) is provided on the outside of the column (2), a base (1) is provided at the lower end of the column (2), and a plurality of fixing bolts are mounted on the base (1).

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