A tilting mechanism for an EVTOL

Abstract

The utility model discloses a kind of tilting mechanism for EVTOL, it includes first mounting pedestal, second mounting pedestal being rotatably connected on the first mounting pedestal and rudder machine being set on the first mounting pedestal, both sides of the rudder machine are connected with transmission module, and another end of the transmission module is connected on the second mounting pedestal, the transmission module includes rudder machine rocker arm being connected on the rudder machine output end face upper end, connecting rod being rotatably connected in the lower end of the rudder machine rocker arm and rotary connection adapter support in another end of the connecting rod, another end of the adapter support is connected on the second mounting pedestal.The utility model is designed by symmetry transmission, copying positioning, multi-state limit and real-time monitoring etc., realize high reliability, high accuracy and easy maintenance, effectively guarantee the stability and safety of EVTOL aircraft.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft technology, and in particular relates to a tilting mechanism for EVTOL. Background Technology

[0002] EVTOL (Electric Vertical Take-Off and Landing) aircraft combine the efficient cruise capability of fixed-wing aircraft with the vertical take-off and landing capability of helicopters, thus avoiding the need for runways and overcoming the shortcomings of slow speed and short range of rotorcraft. Therefore, EVTOL aircraft have broad application prospects. Among them, the tiltrotor configuration is more favored due to its significant advantages in range, cruise speed, and payload ratio. The tilt mechanism is the key component of tiltrotor EVTOL aircraft. The tilt mechanism can change the rotor angle, thereby changing the direction of thrust and allowing the aircraft to switch between vertical take-off and landing and horizontal flight.

[0003] In the prior art, various tilting mechanisms are designed. For example, the tilting mechanism and aircraft disclosed in Chinese Patent Publication CN 221214561 U include a first mounting base, a drive module, a linkage mechanism, and a second mounting base. The first mounting base is connected to the main body of the aircraft, the drive module is located on the first mounting base, the linkage mechanism is located on the first mounting base, and the second mounting base is used to connect the propeller mechanism. In this design, from the side view, the linkage mechanism is only provided on one side of the first mounting base. The drive module drives the linkage mechanism to achieve the tilting of the second mounting base. The drive module drives the linkage mechanism to achieve unilateral transmission, which will result in asymmetrical torque on both sides of the drive module. During long-term tilting operations, the transmission on one side of the drive module will become unstable, which will affect the tilting angle of the second mounting base, causing the propeller mechanism to deviate from the set angle, and ultimately posing a risk of loss of flight attitude and stability of the aircraft.

[0004] Therefore, it is necessary to provide a tilting mechanism for EVTOL to solve the above-mentioned technical problems. Utility Model Content

[0005] The main purpose of this invention is to provide a tilting mechanism for EVTOL, which achieves high reliability, high precision and easy maintenance through symmetrical transmission, contour positioning, multi-state limit and real-time monitoring, effectively ensuring the stability and safety of EVTOL aircraft.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a tilting mechanism for EVTOL, comprising a first mounting base, a second mounting base rotatably connected to the first mounting base, and a servo motor disposed on the first mounting base. Both sides of the servo motor are connected to a transmission module, and the other end of each transmission module is connected to the second mounting base. The transmission module includes a servo motor rocker arm with its upper end connected to the output end face of the servo motor, a connecting rod with one end rotatably connected to the lower end of the servo motor rocker arm, and a transfer bracket rotatably connected to the other end of the connecting rod. The other end of the transfer bracket is connected to the second mounting base.

[0007] Furthermore, the first mounting base includes a base, support plates disposed on both sides of the base, and a pair of mounting brackets disposed on the base and located between the two support plates.

[0008] Furthermore, the mounting bracket has a contour hole on the side away from the base that conforms to the outer periphery of the servo motor, and the two ends of the servo motor are contoured and positioned into the contour hole.

[0009] Furthermore, both sides of the second mounting base are rotatably mounted on one end of the support plate via bearings.

[0010] Furthermore, the second mounting base includes a support side plate connected to the support plate and a mounting seat disposed above the two support side plates, with both ends of the adapter bracket connected to the support side plates respectively.

[0011] Furthermore, a limiting plate is provided on the outer side of the support plate to limit the second mounting base, and an abutting part is provided on the support side plate to contact and abut against the limiting plate.

[0012] Furthermore, the limiting plate includes a first limiting plate at the upper end and a second limiting plate disposed below the first limiting plate.

[0013] Furthermore, the abutting portion includes a first abutting portion that conforms to the first limiting plate and a second abutting portion that conforms to the second limiting plate.

[0014] Furthermore, the support plate is provided with clearance holes at a position corresponding to the servo rocker arm.

[0015] Furthermore, the support plate is equipped with an angle sensor at the position where it connects with the second mounting base.

[0016] Compared with the prior art, the advantages of the tilting mechanism for EVTOL of this utility model are as follows:

[0017] (1) Symmetrical layout of dual transmission modules: The transmission modules are connected to both sides of the servo, and the torque is output symmetrically. This can balance the load of the servo, avoid the problem of transmission instability during long-term tilting operation, prevent the propeller mechanism from deviating from the set angle, and ensure stable flight attitude.

[0018] (2) Contour positioning servo installation: The mounting bracket is equipped with contour holes, and the two ends of the servo are contour positioned, which can improve the installation efficiency and accuracy of the servo, enhance the installation stability of the servo, and reduce the risk of vibration or displacement.

[0019] (3) The second mounting base supported by double bearings: The second mounting base is rotatably connected to both sides of the support plate through bearings, so as to realize smooth tilting movement, reduce friction loss, and improve structural rigidity and durability;

[0020] (4) Multi-state limiting structure: The limiting plate (first / second limiting plate) and the supporting side plate are in contact, which can achieve reliable limiting when the mounting seat is in a horizontal or vertical state, prevent excessive tilting, and ensure the attitude stability of the propeller mechanism during flight.

[0021] (5) Circumvention hole design: Circumvention holes are provided on the support plate and correspond to the position of the servo rocker arm, which makes it easy for assembly tools to be inserted, simplifies the installation process of the servo rocker arm, reduces assembly difficulty, and improves maintenance convenience;

[0022] (6) Angle sensor integration: An angle sensor is installed on the support plate to monitor the tilt angle and provide real-time feedback of the tilt angle to the flight control system, ensuring that the propeller mechanism angle is accurate and controllable and improving flight safety;

[0023] (7) The servo motor and the mounting base rotate at a constant speed, and the transmission ratio between the servo motor and the mounting base is 1:1. The constant speed rotation has no speed change impact, the operation is more stable, and the response speed and accuracy can be improved. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the tilting mechanism used in EVTOL according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the mounting base of the tilting mechanism for EVTOL in a vertical state according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the mounting base of the tilting mechanism for EVTOL in a horizontal state according to an embodiment of the present invention.

[0027] The numbers in the diagram represent:

[0028] 100 - Tilting mechanism for EVTOL;

[0029] 1-First mounting base, 11-Base, 12-Support plate, 13-Mounting bracket;

[0030] 2-Second mounting base, 21-Support side plate, 211-First abutting part, 212-Second abutting part, 22-Mounting seat;

[0031] 3-Servo motor; 4-Transmission module; 41-Servo motor rocker arm; 42-Linkage; 43-Adapter bracket;

[0032] 5-Bearing; 6-Angle sensor;

[0033] 7-Limiting plate, 71-First limiting plate, 72-Second limiting plate; 8-Allowing hole. Detailed Implementation

[0034] Please refer to Figures 1-3 This embodiment describes a tilting mechanism 100 for EVTOL, comprising a first mounting base 1, a second mounting base 2 rotatably connected to the first mounting base 1, and a servo motor 3 mounted on the first mounting base 1. Both sides of the servo motor 3 are connected to transmission modules 4, and the other ends of the transmission modules 4 are connected to the second mounting base 2. Each transmission module 4 includes a servo arm 41 with its upper end connected to the output face of the servo motor 3, a connecting rod 42 rotatably connected to the lower end of the servo arm 41, and a transfer bracket 43 rotatably connected to the other end of the connecting rod 42. The other end of the transfer bracket 43 is connected to the second mounting base 2. With transmission modules 4 connected to both sides of the servo motor 3, the torque output from both sides of the servo motor 3 is symmetrical. Even during long-term tilting operations, this avoids transmission instability in the servo motor 3 and prevents the propeller mechanism (not shown in the figure) from deviating from the set angle, ensuring stable flight of the aircraft and maintaining the set flight attitude during flight.

[0035] The first mounting base 1 is used to connect the main body of the aircraft (not shown in the figure), and the second mounting base 2 is used to connect the propeller mechanism (not shown in the figure). The servo motor 3 drives the transmission module 4 to drive the second mounting base 2 to tilt between the horizontal and vertical states, thereby realizing the tilting conversion of the propeller mechanism (not shown in the figure) between the horizontal and vertical states.

[0036] The first mounting base 1 includes a base 11, support plates 12 disposed on both sides of the base 11, and a pair of mounting brackets 13 disposed on the base 11 and located between the two support plates 12. The aircraft body (not shown in the figure) is mounted on the base 11. The base 11 is provided with a first positioning hole and / or a first positioning structure for mounting and positioning the aircraft body (not shown in the figure). The specific structure of the first positioning hole and / or the first positioning structure is not limited here.

[0037] The mounting bracket 13 has contour holes on the side away from the base 11, which are shaped to conform to the outer periphery of the servo motor 3. Both ends of the servo motor 3 are contour-positioned into the contour holes, enabling the servo motor 3 to be installed on the first mounting base 1. This two-end contour positioning method can improve the installation efficiency and accuracy of the servo motor, enhance the installation stability of the servo motor, and reduce the risk of vibration or displacement.

[0038] The second mounting base 2 is rotatably mounted on one end of the support plate 12 via bearings 5 ​​on both sides. The double bearing support enables smooth tilting movement, reduces frictional loss, and improves structural rigidity and durability. The specific type of bearing 5 is not limited here and can be selected according to actual conditions.

[0039] The second mounting base 2 includes a support side plate 21 connected to the support plate 12 and a mounting seat 22 disposed above the two support side plates 21. The support side plates 21 and the mounting seat 22 are integrally designed and molded, which can enhance structural strength and reduce the risk of connection failure. The two ends of the adapter bracket 43 are respectively connected to the two support side plates 21. The propeller mechanism (not shown in the figure) is mounted on the mounting seat 22. The mounting seat 22 is provided with a second positioning hole and / or a second positioning structure for mounting and positioning the propeller mechanism (not shown in the figure). The specific structure of the second positioning hole and / or the second positioning structure is not limited here. The servo motor 3 and the mounting base 22 maintain a constant speed during rotation, and the transmission ratio between the servo motor 3 and the mounting base 22 is 1:1. The constant speed rotation has no speed change impact, the operation is more stable, and it can also improve the response speed and accuracy.

[0040] Both support plates 12 have limiting plates 7 on their outer sides to limit the second mounting base 2. The limiting plates 7 extend roughly vertically. Specifically, the limiting plates 7 include a first limiting plate 71 at the upper end and a second limiting plate 72 located below the first limiting plate 71. Correspondingly, the support side plate 21 has a contact portion that contacts and abuts against the limiting plates 7. Specifically, the contact portion includes a first contact portion 211 that conforms to the first limiting plate 71 and a second contact portion 212 that conforms to the second limiting plate 72. The limiting contact is as follows: when the mounting base 22 is in a horizontal state, the first contact portion 211 abuts against the first limiting plate 71, thereby limiting the second mounting base 2; when the mounting base 22 is in a horizontal state, the second contact portion 212 abuts against the second limiting plate 72, thereby limiting the second mounting base 2. Therefore, regardless of whether the mounting base 22 is in a horizontal or vertical state, that is, regardless of whether the second mounting base 2 is in a horizontal or vertical state, the limiting plate 7 can limit the second mounting base 2, which can ensure the stability of the second mounting base 2 during flight and prevent excessive tilting, thereby ensuring the stability of the propeller mechanism (not shown in the figure) during flight.

[0041] In this embodiment, the limiting plate 7 and the support plate 12 are integrally formed. The limiting plate 7 extends outward from the outer surface of the support plate 12. The integral forming can enhance the structural strength and reduce the risk of connection failure.

[0042] In other embodiments, the limiting plate 7 and the support plate 12 can be set separately. In order to ensure the strength of the limiting and avoid damage to the limiting plate 7, the limiting plate 7 can be thickened, or the material of the limiting plate 7 can be made of high-strength material. When the separate design is used, different structures or different materials of the limiting plate 7 can be flexibly selected to adapt to different load requirements.

[0043] The support plate 12 is provided with clearance holes 8 at the position corresponding to the servo rocker arm 41. Both support plates 12 are provided with clearance holes 8. The clearance holes 8 are provided for the assembly tools to extend into, so as to assemble the servo rocker arm 41 onto the transmission module 4, simplifying the installation process of the servo rocker arm, reducing the assembly difficulty, and improving the convenience of maintenance.

[0044] An angle sensor 6 is provided at the position where the support plate 12 is connected to the second mounting base 2. The angle sensor 6 is used to monitor the tilt angle of the second mounting base 2 and feed the data back to the flight control system (not shown in the figure) in real time. The real-time monitoring of the tilt angle of the second mounting base 2 is to prevent the propeller mechanism (not shown in the figure) from deviating from the set angle, so as to ensure the stable flight of the aircraft, ensure the precise controllability of the propeller mechanism angle, and improve flight safety.

[0045] Therefore, the tilt mechanism provided in this solution achieves high reliability, high precision, and ease of maintenance through designs such as symmetrical transmission, contour positioning, multi-state limiting, and real-time monitoring, effectively ensuring the stability and safety of the EVTOL aircraft.

[0046] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A tilting mechanism for EVTOL, characterized in that: It includes a first mounting base, a second mounting base rotatably connected to the first mounting base, and a servo motor mounted on the first mounting base. Both sides of the servo motor are connected to a transmission module, and the other end of each transmission module is connected to the second mounting base. The transmission module includes a servo motor rocker arm with its upper end connected to the output end face of the servo motor, a connecting rod with one end rotatably connected to the lower end of the servo motor rocker arm, and an adapter bracket rotatably connected to the other end of the connecting rod. The other end of the adapter bracket is connected to the second mounting base.

2. The tilting mechanism for EVTOL as described in claim 1, characterized in that: The first mounting base includes a base, support plates disposed on both sides of the base, and a pair of mounting brackets disposed on the base and located between the two support plates.

3. A tilting mechanism for EVTOL as described in claim 2, characterized in that: The mounting bracket has a contour hole on the side away from the base that conforms to the outer periphery of the servo motor, and both ends of the servo motor are contoured and positioned within the contour hole.

4. A tilting mechanism for EVTOL as described in claim 2, characterized in that: The second mounting base is rotatably mounted on one end of the support plate via bearings on both sides.

5. A tilting mechanism for EVTOL as described in claim 2, characterized in that: The second mounting base includes a support side plate connected to the support plate and a mounting seat disposed above the two support side plates, with both ends of the adapter bracket connected to the support side plates respectively.

6. A tilting mechanism for EVTOL as described in claim 5, characterized in that: The outer side of the support plate is provided with a limiting plate to limit the second mounting base, and the support side plate is provided with an abutting part that contacts and abuts against the limiting plate.

7. A tilting mechanism for EVTOL as described in claim 6, characterized in that: The limiting plate includes a first limiting plate at the upper end and a second limiting plate disposed below the first limiting plate.

8. A tilting mechanism for EVTOL as described in claim 7, characterized in that: The abutting portion includes a first abutting portion that conforms to the first limiting plate and a second abutting portion that conforms to the second limiting plate.

9. A tilting mechanism for EVTOL as described in claim 2, characterized in that: The support plate has clearance holes at a position corresponding to the servo rocker arm.

10. A tilting mechanism for EVTOL as described in claim 2, characterized in that: An angle sensor is provided at the position where the support plate connects to the second mounting base.

Images