A transmission mechanism suitable for heavy-load unmanned aerial vehicle compatible multi-type engine

Abstract

The application relates to a transmission mechanism suitable for heavy-load unmanned aerial vehicles compatible with multiple types of engines, which comprises two symmetrically arranged frame plates, a cavity type support is formed by fastening the two frame plates through connecting bolts and positioning sleeves sleeved on the connecting bolts, belt pulleys with transmission are arranged at the upper and lower ends of the two frame plates, the two belt pulleys are transmitted through a belt, clamps are arranged on the two sides of the frame plates, arc-shaped grooves are arranged on the side end faces of the frame plates, and a tensioning mechanism for tensioning the transmission belt is arranged at the arc-shaped grooves, so that the unmanned aerial vehicle can be conveniently started.

Description

Technical Field

[0001] This application relates to the field of transmission equipment technology, and in particular to a transmission mechanism suitable for heavy-duty unmanned aerial vehicles and compatible with multiple engine types. Background Technology

[0002] In existing technologies, common heavy-duty UAV transmission systems are mainly constructed from the following components: Input shaft: rigidly connected directly to the output shaft of a single, specific model of engine via a flange. Reduction gear set: employs a fixed set of cylindrical or bevel gears to achieve a fixed reduction ratio. Output shaft: used to drive the propeller; its positional relationship (coaxial, parallel, or perpendicular) to the input shaft is fixed. Housing: used to enclose and support all transmission components.

[0003] In this approach, the engine and transmission mechanism are designed and matched as an inseparable whole. However, in the prior art, in order to reduce the overall weight of the UAV, it is not advisable to add excessively heavy equipment to the whole. The transmission mechanism is rigidly connected by flanges or couplings without flywheels or clutches, resulting in high resistance and difficulty in starting the engine at the beginning. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a transmission mechanism suitable for heavy-duty UAVs and compatible with multiple engine types, which facilitates the start-up of UAVs.

[0005] This application discloses a transmission mechanism suitable for heavy-duty UAVs and compatible with multiple engine types, comprising: two symmetrically arranged frame plates, the two frame plates being fastened together by connecting bolts and positioning sleeves fitted on the connecting bolts to form a cavity-like support; belt-driven pulleys are interchangeably arranged at the upper and lower ends of the two frame plates, the two pulleys being driven by a belt, and clamps are provided on both sides of the frame plates; an arc-shaped groove is constructed on the side end face of the frame plates, and a tensioning mechanism for tensioning the transmission belt is provided at the arc-shaped groove.

[0006] Optionally, the plate surface has bearing holes, a bearing is embedded in the bearing holes, a rotating shaft is connected to the bearing, and the pulley is fixedly mounted on the rotating shaft.

[0007] Optionally, the shelf plate is constructed with strip-shaped through holes.

[0008] Optionally, the tensioning mechanism includes an expansion joint, an L-shaped plate, and a roller.

[0009] The L-shaped plates are symmetrically arranged in two pieces. The corner of the L-shaped plate is connected to the edge of the arc groove of the frame plate through a rotating shaft. A rolling cylinder is connected to one end of the L-shaped plate and contacts the belt of the belt drive. The telescopic end of the telescopic device is connected to the other end of the L-shaped plate.

[0010] Optionally, the telescopic device is fixedly mounted on the base, and the base is adapted to be mounted on the frame plate.

[0011] Optionally, positioning plates are provided on both sides of the rolling cylinder.

[0012] The technical solution provided in this application may include the following beneficial effects:

[0013] This device replaces the function of a flywheel or clutch by using an adjustable belt tensioning mechanism to reduce the friction of the belt. This avoids the increased equipment and structural design required when using a flywheel or clutch. Moreover, the belt drive only requires two drive pulleys and a bracket. The tensioning device can also use the simplest belt compression mechanism. It uses fewer equipment parts, is easy to operate and install, and can be easily adjusted according to specific needs.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0016] Figure 1 This is a schematic diagram of the structure shown in the embodiments of this application;

[0017] Figure 2 This is a cross-sectional view shown in an embodiment of this application;

[0018] Figure label:

[0019] 1. Frame plate; 11. Strip-shaped through hole; 12. Connecting bolt; 13. Arc groove; 14. Bearing cover plate; 15. Clamp; 16. Rotating shaft; 17. Bearing hole; 18. Bearing; 19. Positioning sleeve; 110. Pulley;

[0020] 21. Base; 22. Telescopic device; 23. L-shaped plate; 24. Roller cylinder. Detailed Implementation

[0021] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0022] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0024] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] To address the aforementioned issues, this application provides a transmission mechanism suitable for heavy-duty unmanned aerial vehicles (UAVs) and compatible with multiple engine types. The technical solution of this application embodiment is described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2The transmission mechanism shown is suitable for heavy-duty UAVs and compatible with multiple engine types. It includes two symmetrically arranged frame plates 1. The two frame plates 1 are fastened together by connecting bolts 12 and positioning sleeves 19 fitted onto the connecting bolts 12 to form a cavity-like support. The positioning sleeves 19 provide positioning and create a certain gap for placing other components. Belt-driven pulleys 110 are rotatably mounted at the upper and lower ends of the two frame plates 1, and the two pulleys 110 are connected by a belt drive. Clamps 15 are provided on both sides of the frame plates 1. An arc-shaped groove 13 is constructed on the side end face of the frame plate 1, and a tensioning mechanism for tensioning the transmission belt is installed in the arc-shaped groove 13. Thus, a belt drive mechanism replaces the clutch or flywheel and is installed on the engine's power output shaft. When the engine starts, the tensioning mechanism loosens the belt, and due to the low friction between the belt and the pulleys, the belt slips when the engine rotates, thus avoiding the excessive resistance and difficulty in starting that occurs with a rigid connection. When the engine is operating normally, the engine outputs a large torque, activating the tensioning device to tighten the belt. This application utilizes an adjustable belt tensioning mechanism to replace the function of a flywheel or clutch with a belt drive, thereby increasing the friction between the belt and pulleys for normal transmission. This avoids the increased equipment and structural design required by using a flywheel or clutch. Furthermore, the belt drive only requires two pulleys and a support frame, and the tensioning device can be a simple belt-pressing mechanism. It uses fewer equipment parts, is easy to operate and install, and is convenient to adjust according to specific needs.

[0027] In one embodiment, for the convenience of transmission, a bearing hole 17 is constructed on the surface of the frame plate 1, a bearing 18 is embedded in the bearing hole 17 and sealed by the bearing cover plate 14, a rotating shaft 16 is connected inside the bearing 18, and the pulley 110 is fixedly mounted on the rotating shaft 16.

[0028] In one embodiment, to reduce the overall weight of the equipment, the frame plate 1 is provided with a strip-shaped through hole 11.

[0029] In one embodiment, such as Figure 2 As shown, the tensioning mechanism includes a telescopic device 22, an L-shaped plate 23, and a rolling cylinder 24;

[0030] The L-shaped plates 23 are symmetrically arranged in two pieces. The corner of the L-shaped plates 23 is connected to the edge of the arc groove 13 of the frame plate via a rotating shaft. One end of the L-shaped plates 23 is connected to a rolling cylinder 24, which is in contact with the belt of the belt drive. The other end of the L-shaped plates 23 is connected to the telescopic end of the telescopic device 22. The telescopic device 22 is fixedly mounted on the base 21, and the base 21 is rotatably mounted on the frame plate 1.

[0031] Thus, a tensioning mechanism can be formed by driving a roller to compress the belt through an electric telescoping device, thereby realizing the function of a clutch in the combined belt drive. The structure is simple, uses few parts, and is easy to install.

[0032] In one embodiment, positioning plates are provided on both sides of the rolling cylinder 24, and the positioning plates and the rolling cylinder 24 form a grooved rolling cylinder 24, so that the belt is located in the groove when the belt is tensioned, thereby preventing the belt from skewing during transmission.

[0033] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0034] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0035] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A transmission mechanism suitable for heavy-load unmanned aerial vehicles (UAVs) and compatible with multiple engine types, characterized in that, include: Two symmetrically arranged frame plates (1) are fastened together by connecting bolts (12) and positioning sleeves (19) fitted on the connecting bolts (12) to form a cavity-like support; belt-driven pulleys (110) are connected to the upper and lower ends of the two frame plates (1), and the two pulleys (110) are driven by a belt; clamps (15) are provided on both sides of the frame plates (1); an arc-shaped groove (13) is constructed on the side end face of the frame plate (1), and a tensioning mechanism for tensioning the drive belt is provided at the arc-shaped groove (13).

2. The transmission mechanism for heavy-load unmanned aerial vehicles (UAVs) compatible with multiple engine types according to claim 1, characterized in that: The plate (1) has bearing holes (17) on its surface. A bearing (18) is embedded in the bearing hole (17). A rotating shaft (16) is connected inside the bearing (18). The pulley (110) is fixedly mounted on the rotating shaft (16).

3. The transmission mechanism for heavy-load unmanned aerial vehicles (UAVs) compatible with multiple engine types as described in claim 1, characterized in that: The frame plate (1) has a strip-shaped through hole (11).

4. A transmission mechanism suitable for heavy-load unmanned aerial vehicles and compatible with multiple engine types, as described in claim 1, characterized in that: The tensioning mechanism includes a telescopic device (22), an L-shaped plate (23), and a rolling cylinder (24). Among them, the L-shaped plate (23) is symmetrically arranged in two pieces. The corner of the L-shaped plate (23) is connected to the edge of the arc groove (13) of the frame plate through a rotating shaft. One end of the L-shaped plate (23) is connected to the rolling cylinder (24), which is in contact with the belt of the belt drive. The other end of the L-shaped plate (23) is connected to the telescopic end of the telescopic device (22).

5. A transmission mechanism suitable for heavy-load UAVs and compatible with multiple engine types, as described in claim 4, characterized in that: The telescopic device (22) is fixedly mounted on the base (21), and the base (21) is flexibly mounted on the frame plate (1).

6. A transmission mechanism suitable for heavy-load unmanned aerial vehicles and compatible with multiple engine types, as described in claim 4 or 5, characterized in that: Positioning plates are provided on both sides of the rolling cylinder (24).

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