A five-degree-of-freedom flight simulation platform

Abstract

A five-degree-of-freedom flight simulation platform. The present invention relates to a simulation platform. The purpose of the present invention is to solve the problem in the prior art that there is a need for a motion simulation platform with a small volume, light weight, capable of bearing a large mass, and having a large working space and flexible movement in five degrees of freedom. It includes a support base, a second-layer motion platform, a third-layer motion platform, and a top-layer motion platform; the second-layer motion platform is installed on the support base along the X-axis and Y-axis, the third-layer motion platform is slidably arranged on the second-layer motion platform, and the top-layer motion platform is installed on the third-layer motion platform; the support base includes a bottom frame, an X-direction electric cylinder, a Y-direction electric cylinder, and four cross-slider assemblies; the cross-slider assembly includes an X-direction guide rail, a Y-direction guide rail, and a cross-slider; every two X-direction guide rails are linearly arranged and installed on the second-layer motion platform, and the cylinder body fixing seat of the Y-direction electric cylinder is slidably arranged on the bottom frame. The present invention belongs to a motion simulation mechanism.

Description

Technical Field

[0001] The present invention relates to a simulation platform, and more particularly to a five-degree-of-freedom flight simulation platform, belonging to a motion simulation mechanism. Background Art

[0002] With the development of motion simulation mechanisms, they have been widely used in many fields. Motion simulation mechanisms with small volume, light weight, large load, and large working space have very broad application scenarios in many future fields. In the products of real production aircraft, it is necessary to test the production products under different flight conditions in a limited experimental space to verify their working performance. This not only requires the simulator to bear the self-weight of the production products but also provide simulated motions for different working conditions. To achieve the above functions, a motion simulation platform with small volume, light weight, capable of bearing a large mass, large working space, and five degrees of freedom for flexible movement is needed. For this reason, it is impossible to achieve using traditional parallel or hybrid motion simulation mechanisms. In view of this problem, the present invention proposes a new simulation platform with a hybrid configuration having five degrees of freedom for simulating the main flight conditions of an aircraft. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem in the prior art that a motion simulation platform with small volume, light weight, capable of bearing a large mass, large working space, and five degrees of freedom for flexible movement is needed, and a five-degree-of-freedom flight simulation platform is proposed.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A five-degree-of-freedom flight simulation platform, which comprises a support base, a second-layer motion platform, a third-layer motion platform, and a top-layer motion platform; the second-layer motion platform is slidably mounted on the support base along the X-axis direction and the Y-axis direction, the third-layer motion platform is slidably connected to the second-layer motion platform, and the top-layer motion platform is mounted on the third-layer motion platform;

[0006] The support base includes a bottom frame, an X-direction electric cylinder, a Y-direction electric cylinder, and four cross-slider assemblies; each cross-slider assembly includes an X-direction guide rail, a Y-direction guide rail, and a cross-slider; the bottom frame is a rectangular frame body, and the four cross-slider assemblies are respectively arranged at the four corners of the rectangular frame body. The X-direction guide rail and the Y-direction guide rail are perpendicularly arranged. The Y-direction slider of the cross-slider is slidably arranged on the Y-direction guide rail, and the X-direction slider of the cross-slider is slidably arranged on the X-direction guide rail. The four Y-direction guide rails are parallel to each other, and every two Y-direction guide rails are linearly arranged and installed at both ends of one side frame of the bottom frame. The four X-direction guide rails are parallel to each other, and every two X-direction guide rails are linearly arranged and installed on the second-layer moving platform. The cylinder fixed seat of the X-direction electric cylinder is slidably arranged on the bottom frame, and the telescopic end of the X-direction electric cylinder's telescopic rod is connected to the second-layer moving platform through a connecting pin shaft and a triangular ear seat. The cylinder fixed seat of the Y-direction electric cylinder is slidably arranged on the bottom frame, and the telescopic end of the Y-direction electric cylinder's telescopic rod is connected to the second-layer moving platform through a connecting pin shaft and a triangular ear seat. The X-direction electric cylinder and the Y-direction electric cylinder are perpendicularly arranged.

[0007] The center line of the telescopic rod of the X-direction electric cylinder is parallel to the center line of the X-direction guide rail, and the center line of the telescopic rod of the Y-direction electric cylinder is parallel to the center line of the Y-direction guide rail.

[0008] Preferably, the second-layer moving platform includes a second-layer frame, an X-direction electric cylinder connecting frame, a Y-direction electric cylinder connecting frame, a first X-axis rotation electric cylinder connecting frame, and four groups of support roller assemblies; the X-direction electric cylinder connecting frame and the Y-direction electric cylinder connecting frame are fixedly installed at the bottom end of the second-layer frame, the first X-axis rotation electric cylinder connecting frame is fixedly installed on the second-layer frame, the four groups of support roller assemblies are evenly arranged and installed on the second-layer frame, the second-layer frame is a cuboid frame, and every two X-direction guide rails are linearly arranged and installed at the bottom end of the second-layer frame.

[0009] Preferably, each group of support roller assemblies includes a roller support frame, a support roller, and a limit roller; the roller support frame is fixedly installed on the second-layer frame, the support roller is rotatably connected and installed on the roller support frame, and the limit roller is rotatably connected and installed on the roller support frame above the support roller.

[0010] Preferably, the third-layer moving platform includes an arc-shaped frame, an X-axis rotation electric cylinder, and a second X-axis rotation electric cylinder connecting frame; the second X-axis rotation electric cylinder connecting frame is installed on the arc-shaped frame, the telescopic end of the X-axis rotation electric cylinder's telescopic rod is rotatably connected to the second X-axis rotation electric cylinder connecting frame, the cylinder fixed seat of the X-axis rotation electric cylinder is rotatably connected to the first X-axis rotation electric cylinder connecting frame, the arc-shaped frame is arranged on the four groups of support roller assemblies, and the center line of the X-axis rotation electric cylinder coincides with the center line of the Y-direction electric cylinder.

[0011] Preferably, the third-layer motion platform includes an arc frame, an electric cylinder rotating around the X-axis and a second electric cylinder connecting frame rotating around the X-axis; the second electric cylinder connecting frame rotating around the X-axis is installed on the arc frame, the telescopic end of the telescopic rod of the electric cylinder rotating around the X-axis is rotatably connected to the second electric cylinder connecting frame rotating around the X-axis, the cylinder body fixing seat of the electric cylinder rotating around the X-axis is rotatably connected to the first electric cylinder connecting frame rotating around the X-axis, and the arc frame is arranged on four groups of supporting roller wheel assemblies.

[0012] Preferably, the arc frame includes an arc plate frame body and two arc plates; the two arc plates are arranged side by side in parallel, and the two arc plates are fixedly connected through the arc plate frame body, each arc plate is respectively arranged above two supporting rollers and located below the limit roller on the roller support frame.

[0013] Preferably, the top-level motion platform comprises a table top and two sets of synchronous electric cylinders; the two sets of synchronous electric cylinders are mounted on an arc frame, and the table top is mounted on the top ends of the two sets of synchronous electric cylinders.

[0014] Preferably, the top-level motion platform further comprises four groups of ear seats; the four groups of ear seats are mounted on the lower end surface of the table top, and the top end of each group of synchronous electric cylinders is fixedly connected to two groups of ear seats respectively.

[0015] Preferably, each group of synchronous electric cylinders includes an electric cylinder, a synchronous shaft and two converters; the electric cylinder is fixedly connected to the synchronous shaft, the converters are transmission connected through the synchronous shaft, and the top of each converter is rotationally connected to a group of ear seats through a pin shaft.

[0016] Preferably, a converter connecting shaft is mounted on each converter housing, and the converter is mounted on the arc frame via the converter connecting shaft.

[0017] The present invention has the following beneficial effects:

[0018] 1. Suitable for working condition simulation of large-load products. A hybrid form of four-layer motion platforms connected in series is adopted. Due to the arc-shaped support structure of the third-layer platform, the overall structure is more compact and has a stronger bearing capacity.

[0019] 2. The equipment itself is light, rigid and compact. A 5-DOF series mechanism usually requires a multi-layer structure to achieve the degree of freedom. The five degrees of freedom designed in this design are realized by a hybrid mechanism configuration, which reduces the structural complexity, reduces the height, reduces the weight and improves the rigidity.

[0020] 3. Convenient control, large working space and reasonable structural design.

[0021] 4. The third-layer motion platform 3 of the present application is the key to achieving the degree of freedom around the X-axis direction, making the structure of the simulation platform more compact and smaller in size, and it adopts a special structure to greatly increase its own carrying capacity.

[0022] 5. The rotational freedom degree about the X-axis of this application. The freedom degree in the X direction of the simulation platform is realized by the electric cylinder installed on the second-layer moving platform 2 to push the third-layer moving platform. Its movement is independent and can realize the linkage with other movements. By calibration, its two limit positions are adjusted to ±7°.

[0023] 6. Movement in the X direction and Y direction. A parallel mechanism is realized between the support base 1 and the second-layer moving platform 2, which has the freedom degrees along the X direction and the Y direction, and the movement functions of the freedom degrees are respectively realized by the driving of the electric cylinder in the X direction and the electric cylinder in the Y direction.

[0024] 7. Rotation along the Z-axis freedom degree and rotation about the Y-axis freedom degree. It is realized by two groups of synchronous electric cylinders 18 connected to the top-layer moving platform 4. When the two groups of synchronous electric cylinders 18 extend synchronously, the freedom degree in the Z-axis direction can be realized. When they extend asynchronously, the rotational freedom degree about the Y-axis can be realized. Description of the Drawings

[0025] Figure 1 is the overall structure schematic diagram of this application;

[0026] Figure 2 is the schematic diagram of the support base 1 of the present invention;

[0027] Figure 3 is the enlarged view of the cross slider assembly;

[0028] Figure 4 is the schematic diagram of the X-direction electric cylinder 10 or the Y-direction electric cylinder 11 on the support base 1 slidingly arranged on the bottom frame 1-1.

[0029] Figure 5 is the schematic diagram of the second-layer moving platform 2 of the present invention;

[0030] Figure 6 is the mechanism motion schematic diagram of the support base 1 and the second-layer moving platform 2 of the present invention;

[0031] Figure 7 is the schematic diagram of the third-layer moving platform 3 of the present invention;

[0032] Figure 8 is the schematic diagram of the third-layer moving platform 3 arranged on the second-layer moving platform 2 of the present invention;

[0033] Figure 9 is the connection schematic diagram of the X-axis rotation electric cylinder 20 and the second X-axis rotation electric cylinder connecting frame 21 of the present invention;

[0034] Figure 10 is the schematic diagram of the arc-shaped frame 19 of the present invention;

[0035] Figure 11 Schematic diagram of the motion mechanism of the third - layer motion platform 3 and the top - layer motion platform 4 of the present invention;

[0036] Figure 12 Schematic diagram of each set of synchronous electric cylinders 18 of the present invention;

[0037] Figure 13 Schematic diagram of the top - layer motion platform 4 of the present invention;

[0038] Figure 14 Schematic diagram of rotation about the X - axis of the present invention;

[0039] Figure 15 Principle diagram of rotation about the X - axis of the present invention;

[0040] Figure 16 Schematic diagram of lifting in the Z - axis direction of the present invention;

[0041] Figure 17 Schematic diagram of the degree of freedom of rotation about the Y - axis of the present invention;

[0042] Figure 18 Schematic diagram of the structure around the converter of the present invention. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0044] Detailed implementation manner one: In combination with Figures 1-18 To illustrate this implementation manner, the five - degree - of - freedom flight simulation platform includes a support base 1, a second - layer motion platform 2, a third - layer motion platform 3, and a top - layer motion platform 4; the second - layer motion platform 2 is slidably mounted on the support base 1 in the X - axis direction and the Y - axis direction, the third - layer motion platform 3 is slidably connected to the second - layer motion platform 2, and the top - layer motion platform 4 is mounted on the third - layer motion platform 3;

[0045] The support base 1 includes a bottom frame 1-1, an X-direction electric cylinder 10, a Y-direction electric cylinder 11 and four cross-slider assemblies; the cross-slider assemblies include an X-direction guide rail 8, a Y-direction guide rail 5 and a cross-slider; the bottom frame 1-1 is a rectangular frame body, and the four cross-slider assemblies are respectively arranged at the four corners of the rectangular frame body. The X-direction guide rail 8 and the Y-direction guide rail 5 are perpendicularly arranged. The Y-direction slider 6 of the cross-slider is slidably arranged on the Y-direction guide rail 5, and the X-direction slider 7 of the cross-slider is slidably arranged on the X-direction guide rail 8. The four Y-direction guide rails 5 are parallel to each other, and every two Y-direction guide rails 5 are arranged in a straight line and installed at both ends of one side frame of the bottom frame 1-1. The four X-direction guide rails 8 are parallel to each other, and every two X-direction guide rails 8 are arranged in a straight line and installed on the second-layer moving platform 2. The cylinder fixed seat of the X-direction electric cylinder 10 is slidably arranged on the bottom frame 1-1, and the telescopic end of the telescopic rod of the X-direction electric cylinder 10 is connected to the second-layer moving platform 2 through a connecting pin shaft 13 and a triangular ear seat 12. The cylinder fixed seat of the Y-direction electric cylinder 11 is slidably arranged on the bottom frame 1-1, and the telescopic end of the telescopic rod of the Y-direction electric cylinder 11 is connected to the second-layer moving platform 2 through a connecting pin shaft 13 and a triangular ear seat 12. The X-direction electric cylinder 10 and the Y-direction electric cylinder 11 are perpendicularly arranged.

[0046] In this embodiment, the connection methods of the cylinder fixed seats of the X-direction electric cylinder 10 and the Y-direction electric cylinder 11 with the bottom frame 1-1 are the same. A chute is processed on the cylinder fixed seat of the X-direction electric cylinder 10, and a chute is processed on the cylinder fixed seat of the Y-direction electric cylinder 11. Two perpendicularly arranged slide rails 14 are fixedly installed on the border of the bottom frame 1-1. The cylinder fixed seat of the X-direction electric cylinder 10 is slidably connected to one slide rail 14 through the chute, and the cylinder fixed seat of the Y-direction electric cylinder 11 is slidably connected to the other slide rail 14 through the chute.

[0047] The Y-direction guide rail 5 is installed on the bottom frame 1-1 through bolts, and the X-direction guide rail 8 is fixedly installed on the second-layer moving platform 2 through bolts. The X-direction guide rail 8 is fixedly installed on the second-layer moving platform through bolts.

[0048] The center line of the telescopic rod of the X-direction electric cylinder 10 is parallel to the center line of the X-direction guide rail 8, and the center line of the telescopic rod of the Y-direction electric cylinder 11 is parallel to the center line of the Y-direction guide rail 5.

[0049] The third-layer moving platform is arranged above the second-layer platform through four groups of support roller assemblies, and the top-layer platform is arranged above the third-layer platform through two groups of Z-direction synchronous electric cylinders. Between the support base and the second-layer moving platform, two electric cylinders are arranged to drive along the Y-direction and the X-direction. Between the second-layer moving platform and the third-layer moving platform, one telescopic cylinder is arranged to drive. Between the third-layer moving platform and the top-layer moving platform, two groups of synchronous telescopic cylinders are arranged to drive.

[0050] In this embodiment, four cross slider assemblies are arranged on the support base 1 and the second-layer moving platform 2. By controlling the X-direction electric cylinder 10 or the Y-direction electric cylinder 11 to work, the second-layer moving platform 2 can slide relative to the support base 1 in the X-direction or the Y-direction. The third-layer moving platform 3 is slidably connected to the second-layer moving platform 2. The second-layer moving platform 2 provides sliding support for the third-layer moving platform 3. The control mechanism of the third-layer moving platform 3 enables the third-layer moving platform 3 to roll around the X-axis direction on the second-layer moving platform 2.

[0051] Specific Embodiment 2: In combination with Figures 1-4 Describe this embodiment. For the five-degree-of-freedom flight simulation platform, the second-layer moving platform 2 includes a second-layer frame 2-1, an X-direction electric cylinder connecting frame 17-1, a Y-direction electric cylinder connecting frame 17-2, a first X-axis rotation electric cylinder connecting frame 17, and four groups of support roller assemblies; the X-direction electric cylinder connecting frame 17-1 and the Y-direction electric cylinder connecting frame 17-2 are fixedly installed at the bottom end of the second-layer frame 2-1, the first X-axis rotation electric cylinder connecting frame 17 is fixedly installed on the second-layer frame 2-1, the four groups of support roller assemblies are evenly arranged and installed on the second-layer frame 2-1. The second-layer frame 2-1 is a cuboid frame, and every two X-axis guide rails 8 are linearly arranged and installed at the bottom end of the second-layer frame 2-1. Other methods are the same as those in Specific Embodiment 1.

[0052] In this embodiment, four legs are installed on the second-layer frame 2-1, and the entire load of the platform is borne by the four legs.

[0053] Specific Embodiment 3: In combination with Figures 1-5 Describe this embodiment. For the five-degree-of-freedom flight simulation platform, each group of support roller assemblies includes a roller support frame, a support roller 16, and a limit roller 15; the roller support frame is fixedly installed on the second-layer frame 2-1, the support roller 16 is rotatably connected and installed on the roller support frame, and the limit roller 15 is rotatably connected and installed on the roller support frame above the support roller 16. Other methods are the same as those in Specific Embodiment 2.

[0054] Specific Embodiment 4: In combination with Figures 1-9 Describe this embodiment. For the five-degree-of-freedom flight simulation platform, the third-layer moving platform 3 includes an arc-shaped frame 19, an X-axis rotation electric cylinder 20, and a second X-axis rotation electric cylinder connecting frame 21; the second X-axis rotation electric cylinder connecting frame 21 is installed on the arc-shaped frame 19, the telescopic end of the X-axis rotation electric cylinder 20 is rotatably connected to the second X-axis rotation electric cylinder connecting frame 21, the cylinder body fixed seat of the X-axis rotation electric cylinder 20 is rotatably connected to the first X-axis rotation electric cylinder connecting frame 17, the arc-shaped frame 19 is arranged on the four groups of support roller assemblies, and the center line of the X-axis rotation electric cylinder 20 coincides with the center line of the Y-direction electric cylinder 11.

[0055] The electric cylinder 20 rotating around the X-axis drives the arc plate of the arc-shaped frame 19 to roll on the four groups of support roller assemblies. Other methods are the same as those in the third specific implementation manner. In this implementation manner, the support roller 16 and the limit roller 15 are used for support and limitation, so that the third-layer moving platform 3 slides on the second-layer moving platform 2, and the third-layer moving platform 3 realizes the angle deflection under the action of the support roller 16 and the limit roller 15. Under the push of the electric cylinder 20 rotating around the X-axis, the upper platform realizes the freedom of rotation around the X-axis.

[0056] Specific implementation manner five: Combining Figures 1-7 To illustrate this implementation manner, for the five-degree-of-freedom flight simulation platform, the arc-shaped frame 19 includes an arc plate frame body and two arc plates; the two arc plates are arranged side by side in parallel, and the two arc plates are fixedly connected through the arc plate frame body. Each arc plate is respectively arranged above the two support rollers 16 and below the limit roller 15 on the roller support frame. The arc plate is supported by the support roller 16, and the sliding direction of the arc plate is guided by the support roller 16. The arc plate is limited by the upper limit roller 15, so that the arc plate can rotate around the X-axis according to the telescopic direction of the telescopic rod of the electric cylinder 20 rotating around the X-axis. Other methods are the same as those in the fourth specific implementation manner.

[0057] Specific implementation manner six: Combining Figure 1 and Figure 12 To illustrate this implementation manner, for the five-degree-of-freedom flight simulation platform, the top-layer moving platform 4 includes a tabletop 28 and two groups of synchronous electric cylinders 18; the two groups of synchronous electric cylinders 18 are installed on the arc-shaped frame 19, and the tabletop 28 is installed on the tops of the two groups of synchronous electric cylinders 18. Other methods are the same as those in the first specific implementation manner.

[0058] Specific implementation manner seven: Combining Figure 13 To illustrate this implementation manner, for the five-degree-of-freedom flight simulation platform, the top-layer moving platform 4 further includes four groups of ear seats 27; the four groups of ear seats 27 are installed on the lower end surface of the tabletop 28, and the top of each group of synchronous electric cylinders 18 is fixedly connected to the two groups of ear seats 27 respectively. Other methods are the same as those in the fourth specific implementation manner.

[0059] In the implementation manner, the locking mechanism 29 can fix the workbench surface and the third-layer platform, which is convenient for transportation or locking under vibration conditions.

[0060] Specific implementation manner eight: Combining Figure 12To illustrate this embodiment, the five-DOF flight simulation platform, each set of synchronous electric cylinders 18 includes a reduction motor 22, a synchronization shaft 23 and two converters; the reduction motor 22 is fixedly connected to the synchronization shaft 23, and the converters are connected through the synchronization shaft 23. Other methods are the same as the specific embodiment three.

[0061] Specific implementation method nine: Combination Figure 1 , Figure 12 and Figure 18 To illustrate this embodiment, in the five-degree-of-freedom flight simulation platform, each converter is equipped with a converter connecting shaft 24, and the converter is installed on the arc frame 19 through the converter connecting shaft 24. Other methods are the same as those of the specific embodiment eight.

[0062] In this embodiment, the axis of the synchronization shaft 23 is arranged perpendicularly to the axis of the arc plate on the arc frame 19. By controlling the arc frame 19 to roll a certain angle on the second-layer motion platform 2, the top-layer motion platform 4 is tilted, and then the reduction motor 22 is controlled to control the rise or fall of the two converters according to each group of synchronous electric cylinders 18, thereby achieving the top-layer motion platform 4 and the arc frame 19 rolling direction on the second-layer motion platform 2. The platform angle adjustment is performed in a direction perpendicular to the rolling direction of the second-layer motion platform 2.

[0063] Specific implementation method ten: Combination Figure 12 and Figure 18 This embodiment is described. The five-degree-of-freedom flight simulation platform described above, the converter includes a housing, a synchronous shaft active bevel gear, a lifting screw, a bottom bevel gear of the lifting screw, a screw nut, a fixed nut lifting sleeve, a spring and a lifting cylinder; two synchronous shaft active bevel gears are fixedly mounted on the synchronous shaft 23, and both sides of each synchronous shaft active bevel gear are rotatably connected to the housing through bearings, the lifting screw is vertically arranged and installed on the housing, and the bottom of the lifting screw is rotatably connected to the housing through bearings, the bottom end of the lifting screw is fixedly installed with the bottom bevel gear of the lifting screw, the synchronous shaft active bevel gear and the bottom bevel gear of the lifting screw are meshed, the screw nut is threadedly installed on the lifting screw, the bottom end of the fixed nut lifting sleeve is fixedly connected to the screw nut, the spring is sleeved on the screw nut, the lifting cylinder is inserted between the fixed nut lifting sleeve and the spring, the housing is installed on the arc frame 19 through the converter connecting shaft 24, and the top of the lifting cylinder is rotatably connected to a group of ear seats 27 through a pin 25. Other methods are the same as the specific embodiment nine.

[0064] In this embodiment, the tabletop 28 and the third-layer platform are connected by two sets of synchronous electric cylinders 18 through four lugs 27 on its structure to jointly form a parallel mechanism. The parallel mechanism realizes the rotational degree of freedom along the Z-axis through the synchronous movement of the two sets of electric cylinders, and realizes the rotational degree of freedom along the Y-axis through the asynchronous movement of the two sets of Z-direction electric cylinders. The two sets of synchronous electric cylinders 18 adopt the structural form of two-stage cylinders, and have two driving forms: electric and hand-cranked. And mechanical limits are set inside them to prevent the top cylinder body from sliding out during intense movement, causing potential safety hazards.

[0065] Working principle

[0066] The five-degree-of-freedom flight simulation platform proposed by this invention patent includes a support base 1, a second-layer moving platform 2, a third-layer moving platform 3, and a top-layer moving platform 4. The support base 1 is connected to the second-layer moving platform through four cross-slider assemblies above it. The second-layer moving platform 2 is connected to the third-layer moving platform 3 through four sets of support roller assemblies in a rolling manner above it. The third-layer moving platform 3 is connected to the top-layer moving platform 4 through two sets of synchronous electric cylinders 18.

[0067] Among them, two electric cylinders with the same structure, namely the Y-direction electric cylinder 11 and the X-direction electric cylinder 10, are arranged between the second-layer moving platform 2 and the support base 1. They have the same arrangement method and are connected to the second-layer moving platform 2 through connecting pins 13 and triangular lugs 12, and are connected to the support base 1 through guide rails 14. By the telescopic movement of the Y-direction electric cylinder 11 and the X-direction electric cylinder 10, the moving degrees of freedom of the upper moving platform along the X and Y directions can be realized.

[0068] Among them, the two sets of synchronous electric cylinders 18 are composed of a converter and a synchronous shaft 23. The converter and the arc-shaped frame 19 are connected through the connecting shaft 24 on it and the mating holes on the third-layer platform. The converter and the top-layer moving platform 4 are connected through the mating holes 26, pins 25, and the lugs 27 of the top-layer moving platform 4 on it.

[0069] Among them, the top-layer moving platform 4 is composed of four sets of lugs 27, a tabletop 28, and a locking mechanism 29. By simultaneously extending the two sets of synchronous electric cylinders 18, the degree of freedom along the Z-axis can be realized, and by extending the two sets of synchronous electric cylinders asynchronously, the degree of freedom of rotation around the Y-axis can be realized.

[0070] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A five-degree-of-freedom flight simulation platform, characterized in that: It includes a support base (1), a second-layer moving platform (2), a third-layer moving platform (3) and a top-layer moving platform (4); the second-layer moving platform (2) includes a second-layer frame (2-1), an X-direction electric cylinder connecting frame (17-1), a Y-direction electric cylinder connecting frame (17-2), a first X-axis rotation electric cylinder connecting frame (17) and four groups of support roller assemblies; the third-layer moving platform (3) includes an arc-shaped frame (19), an X-axis rotation electric cylinder (20) and a second X-axis rotation electric cylinder connecting frame (21); the second-layer moving platform (2) is slidably mounted on the support base (1) in the X-axis direction and the Y-axis direction, the third-layer moving platform (3) is slidably connected to the second-layer moving platform (2), and the top-layer moving platform (4) is mounted on the third-layer moving platform (3); The support base (1) includes a bottom frame (1-1), an X-direction electric cylinder (10), a Y-direction electric cylinder (11), and four cross-slider assemblies; the cross-slider assembly includes an X-direction guide rail (8), a Y-direction guide rail (5), and a cross-slider; the bottom frame (1-1) is a rectangular frame body, and the four cross-slider assemblies are respectively arranged at the four corners of the rectangular frame body. The X-direction guide rail (8) and the Y-direction guide rail (5) are vertically arranged. The Y-direction slider (6) of the cross-slider is slidably arranged on the Y-direction guide rail (5), and the X-direction slider (7) of the cross-slider is slidably arranged on the X-direction guide rail (8). The four Y-direction guide rails (5) are parallel to each other, and every two Y-direction guide rails (5) are arranged in a straight line and installed at both ends of one side frame of the bottom frame (1-1). The four X-direction guide rails (8) are parallel to each other, and every two X-direction guide rails (8) are arranged in a straight line and installed on the second-layer moving platform. The cylinder fixed seat of the X-direction electric cylinder (10) is slidably arranged on the bottom frame (1-1), and the telescopic end of the telescopic rod of the X-direction electric cylinder (10) is connected to the second-layer moving platform through a connecting pin shaft (13) and a triangular ear seat (12). The cylinder fixed seat of the Y-direction electric cylinder (11) is slidably arranged on the bottom frame (1-1), and the telescopic end of the telescopic rod of the Y-direction electric cylinder (11) is connected to the second-layer moving platform through a connecting pin shaft (13) and a triangular ear seat (12). The X-direction electric cylinder (10) and the Y-direction electric cylinder (11) are vertically arranged. The X-direction electric cylinder connecting frame (17-1) and the XY-direction electric cylinder connecting frame (17-2) are fixedly installed at the bottom end of the second-layer frame (2-1). The first X-axis rotation electric cylinder connecting frame (17) is fixedly installed on the second-layer frame (2-1). The four groups of support roller assemblies are evenly arranged and installed on the second-layer frame (2-1). The second-layer frame (2-1) is a cuboid frame. Every two X-direction guide rails (8) are arranged in a straight line and installed at the bottom end of the second-layer frame (2-1). The second X-axis rotation electric cylinder connecting frame (21) is installed on the arc-shaped frame (19). The telescopic end of the telescopic rod of the X-axis rotation electric cylinder (20) is rotatably connected to the second X-axis rotation electric cylinder connecting frame (21). The cylinder fixed seat of the X-axis rotation electric cylinder (20) is rotatably connected to the first X-axis rotation electric cylinder connecting frame (17). The arc-shaped frame (19) is arranged on the four groups of support roller assemblies. The center line of the X-axis rotation electric cylinder (20) coincides with the center line of the Y-direction electric cylinder (11).

2. The five-degree-of-freedom flight simulation platform according to claim 1, wherein: Each group of support roller assemblies includes a roller support frame, a support roller (16), and a limit roller (15); the roller support frame is fixedly installed on the second-layer frame (2-1), the support roller (16) is rotatably connected and installed on the roller support frame, and the limit roller (15) is rotatably connected and installed on the roller support frame above the support roller (16).

3. The five-degree-of-freedom flight simulation platform according to claim 1, wherein: The arc-shaped frame (19) includes an arc-shaped plate frame body and two arc-shaped plates; the two arc-shaped plates are arranged side by side and parallel to each other, and the two arc-shaped plates are fixedly connected through the arc-shaped plate frame body. Each arc-shaped plate is respectively arranged above the two support rollers (16) and below the limit roller (15) on the roller support frame.

4. The five-degree-of-freedom flight simulation platform according to claim 1, characterized in that: The top-level motion platform (4) comprises a tabletop (28) and two sets of synchronous electric cylinders (18); the two sets of synchronous electric cylinders (18) are mounted on an arc frame (19), and the tabletop (28) is mounted on the top ends of the two sets of synchronous electric cylinders (18).

5. The five-degree-of-freedom flight simulation platform according to claim 1, wherein: The top-level motion platform (4) further comprises four groups of ear seats (27); the four groups of ear seats (27) are mounted on the lower end surface of the table top (28), and the top end of each group of synchronous electric cylinders (18) is fixedly connected to two groups of ear seats (27) respectively.

6. The five-degree-of-freedom flight simulation platform according to claim 5, characterized in that: Each group of synchronous electric cylinders (18) comprises a reduction motor (22), a synchronization shaft (23) and two converters; the reduction motor (22) is fixedly connected to the synchronization shaft (23), and the converters are transmission-connected via the synchronization shaft (23).

7. The five-degree-of-freedom flight simulation platform according to claim 6, characterized in that: A converter connecting shaft (24) is mounted on each converter, and the converter is mounted on the arc frame (19) via the converter connecting shaft (24).

8. The five-degree-of-freedom flight simulation platform according to claim 7, characterized in that: The converter comprises a housing, a synchronous shaft driving bevel gear, a lifting screw, a bottom bevel gear of the lifting screw, a screw nut, a fixed nut lifting sleeve, a spring and a lifting cylinder; two synchronous shaft driving bevel gears are fixedly mounted on the synchronous shaft (23), and both sides of each synchronous shaft driving bevel gear are rotatably connected to the housing through bearings, the lifting screw is vertically arranged and mounted on the housing, and the bottom of the lifting screw is rotatably connected to the housing through a bearing, the bottom end of the lifting screw is fixedly mounted with a bottom bevel gear of the lifting screw, the teeth of the synchronous shaft driving bevel gear and the bottom bevel gear of the lifting screw are meshed, the screw nut is threadedly mounted on the lifting screw, the bottom end of the fixed nut lifting sleeve is fixedly connected to the screw nut, the spring is sleeved on the screw nut, the lifting cylinder is inserted between the fixed nut lifting sleeve and the spring, the housing is mounted on the arc frame (19) through the converter connecting shaft (24), and the top of the lifting cylinder is rotatably connected to a group of ear seats (27) through a pin shaft (25).

Images