Multi-degree of freedom analog flight cabin

Abstract

The utility model provides a kind of multi-degree-of-freedom simulation flight cabin, including base, still include: swing structure, set in the top of base, swing frame, set in the top of swing structure, the side of swing frame is fixed with reduction gearbox, the inside rotation connection of cabin top has door, vibration structure, set in the inside of swing frame, locking structure, set in the inside of swing structure side.The utility model directly drives cabin to shake by vibration motor, so that cabin can reproduce engine operation tremor, start locking cylinder and push roof against swing frame, can be positioned and fixed to cabin, whereby realized the vibration simulation function of this device, can accurately reproduce vibration under different flight scenes, let operator real perception engine operation tremor, air flow disturbance impact and other details feedback in training, make simulation environment more close to real flight working condition, improve the immersion and comprehensiveness of training.

Description

Technical Field

[0001] This utility model relates to the field of flight simulator technology, and in particular to a multi-degree-of-freedom flight simulator. Background Technology

[0002] As the training requirements for pilots and astronauts in the aviation, aerospace, and military fields become increasingly stringent, traditional ground-based theoretical teaching and simple simulators are insufficient to reproduce the complex attitudes, airflow disturbances, and multi-system collaborative scenarios in real flight. Therefore, a multi-degree-of-freedom flight simulator has been established. Through a multi-axis motion platform, a high-fidelity visual system, and real-time data interaction technology, it is used to accurately simulate physical feedback such as acceleration and tilt under different flight conditions, helping operators to master flight control skills and cope with sudden failures in a safe environment.

[0003] A search revealed Chinese patent publication number CN221804906U, which discloses a multi-degree-of-freedom VR flight simulator. The simulator includes an operating platform, a screen platform, and a seat mounted on the platform. The operating platform is movable, the screen platform has a screen, and the seat's height and tilt are adjustable. This multi-degree-of-freedom VR flight simulator features a seat that conforms to the human body's contours, providing high comfort. The user sits on the seat, and the seat's height and tilt are adjusted via a drive mechanism consisting of three power mechanisms. It also includes operating handles and buttons to perform simulated flight operations, enabling human-computer interaction. The simulator boasts a high degree of simulation, a compact overall structure, and convenient operation, making it suitable for industrial-scale application.

[0004] The aforementioned patents have the following shortcomings: Since existing devices mainly rely on multi-axis motion platforms to achieve macroscopic attitude simulation, their drive structure and range of motion focus more on large-scale movements such as overall tilting and rising and falling. They lack the ability to accurately transmit and reproduce high-frequency, low-amplitude vibration signals, such as low-frequency engine vibration and subtle fuselage vibrations caused by airflow turbulence. As a result, when simulating scenarios such as low-altitude penetration and complex weather flight, they cannot realistically reproduce the impact of vibration on the pilot's operational touch and physiological perception. This makes it difficult for operators to develop the intuition to judge and respond to vibration signals during training, which to some extent affects the comprehensiveness and realism of the training.

[0005] To address this, a multi-degree-of-freedom simulated flight cabin is proposed. Utility Model Content

[0006] In view of this, the present invention aims to provide a multi-degree-of-freedom flight simulator to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0007] The technical solution of this utility model embodiment is implemented as follows: a multi-degree-of-freedom simulated flight cabin, including a base, and further including: A swinging structure, located at the top of the base, is used to simulate the swinging attitude of flight; A swing frame is set at the top of the swing structure. A gearbox is fixed on one side of the swing frame, and a flip motor connected to the input shaft of the gearbox is fixed at the bottom of one side of the swing frame. The cabin is located at the top inside the swing frame. A cabin door is rotatably connected to the top of the cabin. An operating platform is fixed on one side inside the cabin, and a seat is fixed on the other side inside the cabin. A vibration structure is installed inside the swing frame. The vibration structure includes a connecting frame rotatably connected inside the swing frame. A second bracket is fixed on both sides inside the connecting frame. A support spring is fixed at one end of the second bracket. A first bracket connected to the cabin body is fixed at the end of the support spring away from the second bracket. A vibration motor is fixed at the bottom of the cabin body. Positioning components are installed inside both sides of the cabin body. The locking structure, located inside one side of the swing structure, is used to lock the flight swing attitude.

[0008] In some embodiments: the positioning assembly includes locking cylinders fixed inside both sides of the cabin, the telescopic end of the locking cylinder is fixed with a top plate, and the two sides inside the swing frame are fixed with positioning pins.

[0009] In some embodiments, the top plate has a through hole that matches the positioning pin, and the top plate and the positioning pin form an insertion and removal structure through the through hole.

[0010] In some embodiments, the support springs are arranged at equal intervals on both sides of the cabin, and the support springs are symmetrically distributed on the horizontal center line of the top plate.

[0011] In some embodiments: the swing structure includes a guide rail fixed to the top of the base, a rotating frame slidably connected to the top of the guide rail, a supporting cylinder rotatably connected to the top of the rotating frame, an internal gear ring fixed on the inner side wall of the rotating frame, a first motor fixed to one side of the top of the base, and a gear meshing with the internal gear ring fixed to the end of the output shaft of the first motor, a ball seat fixed to the top of the base, and a ball head rotatably connected to the top of the ball seat and connected to the swing frame.

[0012] In some embodiments: the guide rail and the rotating frame are both annular structures in their top cross-sections; the telescopic end of the support cylinder is rotatably connected to the bottom end of the swing frame; and the support cylinders are arranged in annular, equally spaced arrangement on the outer side of the ball head.

[0013] In some embodiments: the locking structure includes a housing fixed inside one side of the ball seat, a bidirectional lead screw rotatably connected inside the housing, a first bevel gear fixed at the middle section of the bidirectional lead screw, a second motor fixed on one side of the housing, a second bevel gear meshing with the first bevel gear fixed at the end of the output shaft of the second motor, a movable clamp threaded to the outer side of the bidirectional lead screw, and a friction plate fixed on the side of the movable clamp near the ball head.

[0014] In some embodiments: the movable clamp extends into the interior of the ball seat and connects to the friction plate, and the movable clamp forms a sliding structure between the ball seats.

[0015] The present invention has the following advantages due to the adoption of the above technical solutions: 1. A multi-degree-of-freedom flight simulator, which directly drives the cabin to vibrate through a vibration motor, so that the cabin can reproduce the vibration of engine operation. The locking cylinder is activated to push the top plate against the swing frame, which can position and fix the cabin. Thus, the vibration simulation function of this device is realized, which can accurately reproduce the vibration under different flight scenarios, allowing operators to truly perceive the details of engine operation vibration, airflow disturbance impact and other feedback during training, making the simulation environment closer to the real flight conditions, and improving the immersion and comprehensiveness of training.

[0016] 2. A multi-degree-of-freedom flight simulator cabin, which uses a first motor to drive a rotating frame to slide in a ring along a guide rail, while multiple sets of support cylinders push the swing frame to swing at multiple angles, so that the cabin can simulate flight attitude. This realizes the multi-angle swing function of the device, which can flexibly reproduce various flight attitudes such as climbing, diving, tilting, and hovering, allowing operators to truly feel the changes in body force and spatial orientation under different working conditions.

[0017] 3. A multi-degree-of-freedom flight simulator uses a second motor to drive a bidirectional lead screw to rotate, causing a moving clamp to push a friction plate into contact with a ball head, thus restricting the rotation of the ball head. This achieves the position locking function of the device, allowing the simulator to be stably fixed in a preset attitude or position during specific training sessions, such as ground maintenance simulation, instrument operation teaching, and emergency procedure drills, avoiding unnecessary swaying that could interfere with the operation.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 A three-dimensional structural diagram of the vibration structure provided by this utility model; Figure 4 A three-dimensional structural diagram of the top plate provided for this utility model; Figure 5 This is a three-dimensional cross-sectional structural diagram of the locking structure provided by this utility model.

[0021] Figure label: 1-Base, 2-Swing structure, 201-Rotating frame, 202-Internal gear ring, 203-Support cylinder, 204-Spherical seat, 205-Ball head, 206-First motor, 207-Gear, 208-Guide rail, 3-Tilting motor, 4-Reduction gearbox, 5-Swing frame, 6-Hatch door, 7-Seat, 8-Locking structure, 801-Moving clamp, 802-Double lead screw, 803-Second motor, 804-First bevel gear, 805-Second bevel gear, 806-Friction plate, 807-Casing, 9-Vibration structure, 901-Connecting frame, 902-Vibration motor, 903-First bracket, 904-Second bracket, 905-Support spring, 906-Top plate, 907-Locking cylinder, 908-Positioning pin, 10-Hatch body, 11-Operating platform. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] 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 above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Example 1: As Figures 1-5 As shown, a multi-degree-of-freedom flight simulator includes a base 1 and also includes: The swing structure 2 is set at the top of the base 1 and is used to simulate the swinging attitude of flight. The swing frame 5 is set at the top of the swing structure 2. A reduction gearbox 4 is fixed on one side of the swing frame 5. A flip motor 3, whose output shaft end is connected to the input shaft end of the reduction gearbox 4, is fixed at the bottom of one side of the swing frame 5. The cabin 10 is located at the top inside the swing frame 5. The top of the cabin 10 is rotatably connected to the cabin door 6. An operating platform 11 is fixed on one side inside the cabin 10, and a seat 7 is fixed on the other side inside the cabin 10. Vibration structure 9 is installed inside swing frame 5. Vibration structure 9 includes a connecting frame 901 rotatably connected inside swing frame 5. Second brackets 904 are fixed on both sides inside the connecting frame 901. A support spring 905 is fixed at one end of the second bracket 904. A first bracket 903 connected to cabin 10 is fixed at the end of the support spring 905 away from the second bracket 904. Vibration motor 902 is fixed at the bottom of cabin 10. Positioning components are installed inside both sides of cabin 10. The locking structure 8 is located inside one side of the swing structure 2 and is used to lock the flight swing attitude.

[0026] In this embodiment, when the flight simulator is started, the base 1 provides stable support for the entire device. The swing structure 2 drives the cabin 10 to swing at multiple angles to simulate the swing posture of flight. Through the cooperation of the gearbox 4 and the flip motor 3, the vibration structure 9 and the cabin 10 are driven to achieve a specific angle of flipping action. The operating console 11 provides a control interface for the operator. The seat 7 ensures the stability of the operator's sitting posture during the simulation. The cabin door 6 can be closed before the start of training to create a closed simulation environment. The vibration structure 9 simulates the vibration generated during flight.

[0027] like Figures 3 to 4 As shown: The positioning assembly includes locking cylinders 907 fixed inside both sides of the cabin 10. The telescopic end of the locking cylinder 907 is fixed with a top plate 906. Positioning pins 908 are fixed inside both sides of the swing frame 5. The top plate 906 has through holes that match the positioning pins 908. The top plate 906 and the positioning pins 908 form a plug-in structure through the through holes. The support springs 905 are arranged at equal intervals on both sides of the cabin 10. The support springs 905 are symmetrically distributed on the horizontal center line of the top plate 906.

[0028] In this embodiment, when it is necessary to simulate vibration scenarios during flight, the vibration motor 902 is activated, and the resulting vibration directly causes the cabin 10 to shake, so that the cabin 10 can reproduce different types of vibrations such as engine operation vibration and airflow disturbance impact. The cabin 10 is supported by the support spring 905 so that the cabin 10 can generate vibration. If it is necessary to stop the vibration, the locking cylinder 907 is activated, which pushes the top plate 906 to move and abut against the swing frame 5. At the same time, the top plate 906 forms a plug-in engagement with the positioning pin 908 in the swing frame 5 through the through hole, thereby positioning and fixing the cabin 10.

[0029] Example 2: A multi-degree-of-freedom flight simulator. This example is an improvement on Example 1, as follows: Figures 1-2 As shown, the swing structure 2 includes a guide rail 208 fixed to the top of the base 1. A rotating frame 201 is slidably connected to the top of the guide rail 208. A support cylinder 203 is rotatably connected to the top of the rotating frame 201. An internal gear ring 202 is fixed on the inner side wall of the rotating frame 201. A first motor 206 is fixed to one side of the top of the base 1. A gear 207 that meshes with the internal gear ring 202 is fixed to the end of the output shaft of the first motor 206. A ball seat 204 is fixed to the top of the base 1. A ball head 205 that is rotatably connected to the top of the ball seat 204 and connected to the swing frame 5 is rotatably connected to the top of the ball seat 204. The guide rail 208 and the rotating frame 201 are both annular structures in their top cross-section. The telescopic end of the support cylinder 203 is rotatably connected to the bottom end of the swing frame 5. The support cylinders 203 are arranged in annular and equally spaced arrangement outside the ball head 205.

[0030] In this embodiment, when it is necessary to simulate flight swaying attitude, the first motor 206 is started to drive the gear 207 to rotate. Then, the gear 207 meshes with the internal gear ring 202, causing the internal gear ring 202 to drive the rotating frame 201 to slide in a ring along the guide rail 208. At the same time, multiple sets of support cylinders 203 extend and retract according to the simulation requirements, pushing the swing frame 5 to swing at multiple angles with the ball head 205 as the fulcrum. This drives the cabin 10 to simultaneously simulate flight attitudes such as climbing, diving, tilting, and hovering, which improves the accuracy of swaying attitude simulation to a certain extent, allowing the operator to truly feel the changes in spatial orientation and the force on the body under different flight conditions.

[0031] like Figure 5 As shown, the locking structure 8 includes a housing 807 fixed inside one side of the ball seat 204. A bidirectional lead screw 802 is rotatably connected inside the housing 807. A first bevel gear 804 is fixed at the middle section of the bidirectional lead screw 802. A second motor 803 is fixed to one side of the housing 807. A second bevel gear 805 that meshes with the first bevel gear 804 is fixed to the end of the output shaft of the second motor 803. A movable clamp 801 is threaded to the outside of the bidirectional lead screw 802. A friction plate 806 is fixed to the side of the movable clamp 801 near the ball head 205. The movable clamp 801 extends into the interior of the ball seat 204 and connects with the friction plate 806. The movable clamp 801 forms a sliding structure between the ball seats 204.

[0032] In this embodiment, when it is necessary to lock the flight swing attitude, the second motor 803 is started, which causes the second bevel gear 805 to mesh with the first bevel gear 804, thereby driving the bidirectional lead screw 802 to rotate. When the bidirectional lead screw 802 rotates, it drives the movable clamp 801 to slide into the ball seat 204, so that the movable clamp 801 is close to the ball head 205. At the same time, the friction plate 806 is in close contact with the ball head 205. The friction between the friction plate 806 and the ball head 205 restricts the rotation of the ball head 205, thereby locking the current swing attitude of the swing frame 5 and the cabin 10. This allows the flight simulator to maintain a stable state in specific training sessions, making it convenient for operators to focus on related operation practice.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multi-degree-of-freedom flight simulator, comprising a base (1), characterized in that, Also includes: The swing structure (2) is set at the top of the base (1) and is used to simulate the swing attitude of flight; A swing frame (5) is set at the top of the swing structure (2). A gearbox (4) is fixed on one side of the swing frame (5). A flip motor (3) whose output shaft end is connected to the input shaft end of the gearbox (4) is fixed at the bottom of one side of the swing frame (5). The cabin (10) is located at the top of the swing frame (5). The top of the cabin (10) is rotatably connected to the cabin door (6). An operating platform (11) is fixed on one side of the cabin (10), and a seat (7) is fixed on the other side of the cabin (10). A vibration structure (9) is installed inside the swing frame (5). The vibration structure (9) includes a connecting frame (901) rotatably connected inside the swing frame (5). A second bracket (904) is fixed on both sides inside the connecting frame (901). A support spring (905) is fixed at one end of the second bracket (904). A first bracket (903) connected to the cabin (10) is fixed at the end of the support spring (905) away from the second bracket (904). A vibration motor (902) is fixed at the bottom of the cabin (10). Positioning components are installed inside both sides of the cabin (10). The locking structure (8) is located inside one side of the swing structure (2) and is used to lock the flight swing attitude.

2. The multi-degree-of-freedom flight simulator according to claim 1, characterized in that: The positioning assembly includes locking cylinders (907) fixed inside both sides of the cabin (10), with a top plate (906) fixed to the telescopic end of the locking cylinder (907), and positioning pins (908) fixed to both sides inside the swing frame (5).

3. The multi-degree-of-freedom flight simulator according to claim 2, characterized in that: The top plate (906) has a through hole inside that matches the positioning pin (908), and the top plate (906) and the positioning pin (908) form a plug-in structure through the through hole.

4. A multi-degree-of-freedom flight simulator according to claim 2, characterized in that: The support springs (905) are arranged at equal intervals on both sides of the cabin (10), and the support springs (905) are symmetrically distributed on the horizontal center line of the top plate (906).

5. The multi-degree-of-freedom flight simulator according to claim 1, characterized in that: The swing structure (2) includes a guide rail (208) fixed to the top of the base (1), a rotating frame (201) slidably connected to the top of the guide rail (208), a support cylinder (203) rotatably connected to the top of the rotating frame (201), an internal gear ring (202) fixed on the inner side wall of the rotating frame (201), a first motor (206) fixed on one side of the top of the base (1), and a gear (207) meshing with the internal gear ring (202) fixed at the end of the output shaft of the first motor (206), a ball seat (204) fixed to the top of the base (1), and a ball head (205) rotatably connected to the swing frame (5) at the top of the ball seat (204).

6. A multi-degree-of-freedom flight simulator according to claim 5, characterized in that: The guide rail (208) and the rotating frame (201) have a ring structure in their top cross-section. The telescopic end of the support cylinder (203) is rotatably connected to the bottom end of the swing frame (5). The support cylinders (203) are arranged in a ring with equal spacing on the outside of the ball head (205).

7. A multi-degree-of-freedom flight simulator according to claim 5, characterized in that: The locking structure (8) includes a housing (807) fixed inside one side of the ball seat (204). A double-acting screw (802) is rotatably connected inside the housing (807). A first bevel gear (804) is fixed at the middle section of the double-acting screw (802). A second motor (803) is fixed on one side of the housing (807). A second bevel gear (805) that meshes with the first bevel gear (804) is fixed at the end of the output shaft of the second motor (803). A movable clamp (801) is threaded to the outside of the double-acting screw (802). A friction plate (806) is fixed on the side of the movable clamp (801) near the ball head (205).

8. A multi-degree-of-freedom flight simulator according to claim 7, characterized in that: The movable clamp (801) extends into the interior of the ball seat (204) and connects with the friction plate (806), and the movable clamp (801) forms a sliding structure between the ball seats (204).

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