Vibration reduction structure for engine of unmanned aerial vehicle

Abstract

The utility model provides an unmanned aerial vehicle engine vibration reduction structure. The unmanned aerial vehicle engine vibration reduction structure comprises an elastic vibration reduction assembly, a transverse connecting arm, a longitudinal connecting frame, an upper-layer connecting frame and an upper-layer connecting column. The transverse connecting arm is arranged below the engine and is connected with the rack; the longitudinal connecting frame is arranged below the engine and connected with the bottom of the engine, and meanwhile the longitudinal connecting frame is connected with the transverse connecting arm through the elastic vibration reduction assembly. The upper-layer connecting frame is arranged above the engine and connected with the top of the engine, meanwhile, the upper-layer connecting frame is connected with the upper-layer connecting column through the elastic damping assembly, and the upper-layer connecting column is connected with the engine. Compared with the prior art, the buffering and damping effect of the engine can be further improved, so that vibration of the engine transmitted to a rack and other parts or equipment is reduced, and the reliability and flight stability of the unmanned aerial vehicle are improved.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a vibration reduction structure for UAV engines. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and their own program control systems. With the development of UAV technology, UAVs have played an indispensable role in aerial photography, inspection, stability maintenance, reconnaissance, rescue, and plant protection, occupying an extremely important position in both civilian and military fields. UAVs are further classified into electric UAVs and gasoline-powered UAVs based on their propulsion method. Gasoline-powered UAVs, in particular, have excellent wind resistance, are more stable during operation, and have a wider range of applications, especially multi-rotor gasoline-powered UAVs.

[0003] Oil-powered drones are driven by engines, which generate vibrations during operation. Vibration damping structures are needed to buffer and reduce these vibrations to prevent them from being transmitted to the airframe and affecting the function of other components or equipment. This also improves flight stability.

[0004] In existing technologies, a scheme using four legs for support exists. Each leg is supported on a mounting platform by damping shock absorbers, and the four legs are connected to each other via connecting rods. This scheme uses damping shock absorbers at the four mounting platforms and four legs to isolate engine vibrations as much as possible from the engine block, thus isolating the engine on an independent frame and preventing adverse effects on other components. However, this method only buffers and dampes the engine in one direction, creating a cantilever-like structure relative to the legs. For more powerful engines, the damping effect may not be ideal, requiring further improvement. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a vibration reduction structure that is suitable for high-power engines and has a better vibration reduction effect.

[0006] To achieve the above objectives, this utility model provides a vibration reduction structure for a drone engine, including an elastic vibration reduction component, a transverse connecting arm, a longitudinal connecting frame, an upper connecting frame, and an upper connecting column.

[0007] The lateral connecting arm is located below the engine and is connected to the frame;

[0008] The longitudinal connecting frame is disposed below the engine and is connected to the bottom of the engine. At the same time, the longitudinal connecting frame is connected to the transverse connecting arm through the elastic damping component.

[0009] The upper connecting frame is disposed above the engine and is connected to the top of the engine. The upper connecting frame is also connected to the upper connecting column through the elastic damping component, and the upper connecting column is connected to the frame.

[0010] The elastic vibration damping assembly includes a first vibration damping cylinder, a second vibration damping cylinder, and a vibration damping elastic element. The vibration damping elastic element is disposed between the first vibration damping cylinder and the second vibration damping cylinder and is used to buffer and dampen vibration between the first vibration damping cylinder and the second vibration damping cylinder.

[0011] Furthermore, the transverse connecting arm is provided with a clamp, which is used to connect with the longitudinal support of the frame.

[0012] Furthermore, the top of the longitudinal connecting frame is connected to the connecting seat at the bottom of the engine, and the bottom of the longitudinal connecting frame is connected to the transverse connecting arm through the elastic damping assembly.

[0013] Furthermore, there are two transverse connecting arms and two longitudinal connecting frames, and each longitudinal connecting frame is connected to two transverse connecting arms simultaneously through two elastic damping components.

[0014] Furthermore, the bottom of the upper connecting frame is connected to the connecting seat on the top of the engine, and the top of the upper connecting frame is connected to the upper connecting column through the elastic damping component.

[0015] Furthermore, the upper connecting column is provided with a slot, which is used to connect with the longitudinal support of the frame.

[0016] Furthermore, the vibration damping elastic element is a vibration damping elastic block, the first vibration damping cylinder is sleeved on the first end of the vibration damping elastic block, the second vibration damping cylinder is sleeved on the second end of the vibration damping elastic block, and the vibration damping elastic block is made of rubber material.

[0017] Furthermore, the damping elastic element is a spring, and the two ends of the spring are respectively connected to the first damping cylinder and the second damping cylinder, and the first damping cylinder and the second damping cylinder are movably connected.

[0018] The above-mentioned solution of this utility model has the following beneficial effects:

[0019] The UAV engine vibration reduction structure provided by this utility model, through the setting of a transverse connecting arm, a longitudinal connecting frame, an upper connecting frame, and an upper connecting column, can further improve the engine's buffering and vibration reduction effect compared to the solution that only buffers and reduces vibration on one side of the engine. This reduces the transmission of engine vibration to the frame and other components or equipment, thereby improving the reliability and flight stability of the UAV. This is also more suitable for high-power UAVs with large vibration amplitude. At the same time, this solution is not only applicable to longitudinally laid frames, but also to transversely laid frames. The engine and the entire vibration reduction structure can be rotated, making installation more flexible.

[0020] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure and engine installation of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the elastic vibration damping component of this utility model;

[0024] Figure 4 This is a schematic diagram of the longitudinal layout frame involved in this utility model.

[0025] [Explanation of Labels in the Attached Image]

[0026] 1- Lateral connecting arm; 2- Longitudinal connecting frame; 3- Upper connecting frame; 4- Upper connecting column; 5- Engine; 6- Frame; 7- Clamp; 8- Slot; 9- First damping cylinder; 10- Second damping cylinder; 11- Damping elastic block. Detailed Implementation

[0027] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] like Figure 1 , Figure 2 As shown, an embodiment of this utility model provides a vibration reduction structure for a drone engine, including elastic vibration damping components, a transverse connecting arm 1, a longitudinal connecting frame 2, an upper connecting frame 3, and an upper connecting column 4. The transverse connecting arm 1 is located below the engine 5 and is used to connect to the frame 6. Clamps 7 are provided at both ends of the transverse connecting arm 1, which are fixedly connected to the longitudinal support members of the frame 6. Since the transverse connecting arm 1 is transversely distributed, it can connect two longitudinal support members through the clamps 7 at both ends; of course, clamps 7 can be provided at more locations to connect more longitudinal support members. The longitudinal connecting frame 2 is also located below the engine 5 and is used to connect to the engine 5. The top of the longitudinal connecting frame 2 is connected to the connecting seat at the bottom of the engine 5, and the bottom of the longitudinal connecting frame 2 has two connection points, each of which is connected to the transverse connecting arm 1 through an elastic vibration damping component. Since there are two transverse connecting arms 1 and two longitudinal connecting frames 2, the bottom of the engine 5 and the frame 6 can achieve buffering and vibration reduction through four elastic vibration damping components.

[0031] In this embodiment, the upper connecting frame 3 is positioned above the engine 5 for connection to the engine 5. Specifically, the bottom of the upper connecting frame 3 is connected to the connecting seat at the top of the engine 5. The top of the upper connecting frame 3 has two connection points, both of which are connected to the bottom of the corresponding upper connecting column 4 via elastic damping components. The top of the upper connecting column 4 is connected to another longitudinal support member of the frame 6 via a slot 8. Therefore, the top of the engine 5 and the frame 6 can also achieve buffering and vibration reduction through the elastic damping components. Compared to a solution that only provides buffering and vibration reduction on one side of the engine 5, the vibration reduction structure provided in this embodiment can further improve the buffering and vibration reduction effect of the engine 5, thereby reducing the transmission of vibration from the engine 5 to the frame 6 and other components or equipment, improving the reliability and flight stability of the UAV. This is also more suitable for high-power UAVs with large vibration amplitudes.

[0032] At the same time, such as Figure 3 As shown, the elastic damping assembly includes a first damping cylinder 9, a second damping cylinder 10, and a damping elastic block 11. The first damping cylinder 9 is installed near the frame 6, meaning it is fixedly connected to the transverse connecting arm 1 or the upper connecting column 4. The second damping cylinder 10 is installed near the engine 5, meaning it is fixedly connected to the longitudinal connecting frame 2 or the upper connecting frame 3. Simultaneously, the first damping cylinder 9 is fitted onto the first end of the damping elastic block 11, and the second damping cylinder 10 is fitted onto the second end of the damping elastic block 11. The elastic action of the damping elastic block 11 provides elastic buffering between the first and second damping cylinders 9 and 10, thereby reducing the vibration of the engine 5.

[0033] In a preferred embodiment, the vibration damping elastic block 11 is cylindrical and made of rubber. The first vibration damping cylinder 9 and the second vibration damping cylinder 10 are also cylindrical, and their inner diameters match those of the vibration damping elastic block 11, for example, they can be slightly smaller than the outer diameter of the vibration damping elastic block 11, so that the connection between the first vibration damping cylinder 9, the second vibration damping cylinder 10 and the vibration damping elastic block 11 is firm.

[0034] In other embodiments, the first damping cylinder 9 and the second damping cylinder 10 may also be movably connected to each other, and springs may be provided for buffering and damping, as an optional implementation method.

[0035] It should be noted that in this embodiment, all the required connections are made using bolts, making installation and disassembly relatively convenient. For example, the clamp 7 and the slot 8 are securely connected to the longitudinal support using bolts; the first damper 9 is connected to the transverse connecting arm 1 or the upper connecting column 4 using bolts; the second damper 10 is connected to the longitudinal connecting frame 2 or the upper connecting frame 3 using bolts; and the engine 5's connecting seat is also connected to the longitudinal connecting frame 2 or the upper connecting frame 3 using corresponding bolts.

[0036] It should be noted that the vibration reduction structure provided in this embodiment is suitable for applications such as... Figure 4 The longitudinally arranged frame shown has multiple longitudinal supports, allowing the engine 5 to be positioned at the center of the frame 6 for gravity balance. This configuration also applies to a transversely arranged frame 6, where the engine 5 and the entire vibration damping structure are rotated 90 degrees, and the transverse connecting arm 1 and upper connecting column 4 are connected to the transverse supports of the frame 6, providing greater installation flexibility. Furthermore, the vibration damping structure itself also serves as the engine frame, reliably supporting the engine 5.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A drone engine damping structure, characterized by, The elastic damping assembly, the transverse connecting arm, the longitudinal connecting frame, the upper connecting frame and the upper connecting column are arranged in the engine. The transverse connecting arm is arranged below the engine and connected with the frame. The longitudinal connecting frame is arranged below the engine and connected with the bottom of the engine, and the longitudinal connecting frame is connected with the transverse connecting arm through the elastic damping assembly. The upper connecting frame is arranged above the engine and connected with the top of the engine, and the upper connecting frame is connected with the upper connecting column through the elastic damping assembly, and the upper connecting column is connected with the frame. The elastic damping assembly comprises a first damping cylinder, a second damping cylinder and a damping elastic element arranged between the first damping cylinder and the second damping cylinder for buffering and damping between the first damping cylinder and the second damping cylinder.

2. The unmanned aerial vehicle engine damping structure of claim 1, wherein, The transverse connecting arm is provided with a clamp for connecting with the longitudinal support of the frame.

3. The unmanned aerial vehicle engine damping structure of claim 1, wherein, The top of the longitudinal connecting frame is connected with the connecting seat of the bottom of the engine, and the bottom of the longitudinal connecting frame is connected with the transverse connecting arm through the elastic damping assembly.

4. The drone engine damping structure according to claim 1 or 3, characterized in that, The number of the transverse connecting arm and the longitudinal connecting frame is two, and each longitudinal connecting frame is connected with two transverse connecting arms through two elastic damping assemblies.

5. The unmanned aerial vehicle engine damping structure of claim 1, wherein, The bottom of the upper connecting frame is connected with the connecting seat of the top of the engine, and the top of the upper connecting frame is connected with the upper connecting column through the elastic damping assembly.

6. The drone engine damping structure of claim 1, wherein, The upper connecting column is provided with a clamping groove for connecting with the longitudinal support of the frame.

7. The drone engine damping structure of claim 1, wherein, The damping elastic element is a damping elastic block, the first damping cylinder is sleeved on the first end of the damping elastic block, the second damping cylinder is sleeved on the second end of the damping elastic block, and the damping elastic block is made of rubber material.

8. The drone engine damping structure of claim 1, wherein, The damping elastic element is a spring, and the two ends of the spring are respectively connected with the first damping cylinder and the second damping cylinder, and the first damping cylinder and the second damping cylinder are movably connected.

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