An unmanned helicopter and an integral support and damping device for its engine accessories

Abstract

The application discloses an unmanned helicopter and an integral support and damping device for engine accessories, and belongs to the technical field of engine accessory support and damping devices; the integral support and damping device is used for solving the problems that the existing engine accessories are separately fixed and supported, the support structure is complex, and part of non-key engine accessories cannot be damped. The integral support and damping device comprises a first arched beam, a first damper mounting rack and a first damper adapter plate; the first damper mounting rack and the first damper adapter plate are respectively arranged at two ends of the first arched beam; a first steel wire rope damper is arranged on the first damper mounting rack, and a second steel wire rope damper is arranged on the first damper adapter plate; and the unmanned helicopter engine accessories are rigidly connected with the first arched beam. The integral support and damping device can make the installation and dismounting of the engine accessories simpler, and realizes the overall support and damping of the engine accessories.

Description

Technical Field

[0001] This invention relates to the field of engine accessory support device technology, and in particular to an integrated support and vibration reduction device for an unmanned helicopter and its engine accessories. Background Technology

[0002] The existing engine accessories are individually fixed supports, and some critical components (such as the engine control module) are damped using rubber vibration dampers. Other non-critical components are not damped or have additional structures designed for vibration damping.

[0003] Because each engine accessory is individually fixed, a unique fixing structure needs to be designed for each accessory, resulting in a variety of fixing devices. Furthermore, due to the light weight of some accessories, effective vibration damping design is not feasible, forcing them to be abandoned. Vibration damping is only implemented for critical accessories, while non-critical components are either left undamaged or have additional vibration damping structures designed for them. This makes non-critical parts susceptible to vibration damage, leading to engine malfunctions. For example, ignition coils and magneto voltage regulators are easily damaged by engine vibration.

[0004] Existing engine accessories have separate fixed support structures, which are complex to install, cumbersome to disassemble and assemble, and heavy. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide an integrated support and vibration reduction device for unmanned helicopters and their engine accessories, in order to solve the technical problems of existing engine accessories having difficulties in multi-point installation and some accessories being unable to reduce vibration.

[0006] The objective of this invention is mainly achieved through the following technical solutions:

[0007] This invention provides an integrated support and vibration damping device for engine accessories, including a first arched beam, a first vibration damper mounting bracket, and a first vibration damper adapter plate;

[0008] The first vibration damper mounting bracket and the first vibration damper adapter plate are respectively located at both ends of the first arch beam; the first vibration damper mounting bracket is equipped with a first wire rope vibration damper, and the first vibration damper adapter plate is equipped with a second wire rope vibration damper.

[0009] The engine accessories of the unmanned helicopter are rigidly connected to the first arched beam, and the integrated support and vibration damping device is used to support and dampen the engine accessories of the unmanned helicopter.

[0010] In one possible design, the aforementioned integrated support and vibration damping device also includes a first front fixing plate;

[0011] The first wire rope vibration damper is located between the first vibration damper mounting frame and the first front fixing plate. A first fixed end and a second fixed end are respectively provided symmetrically along the axial direction of the first wire rope vibration damper. The first wire rope vibration damper is fixedly connected to the first vibration damper mounting frame through its first fixed end and fixedly connected to the first front fixing plate through its second fixed end.

[0012] In one possible design, the aforementioned integrated support and vibration damping device also includes a first front clamp and a first front mounting bracket;

[0013] The first front clamp is fixedly connected to one end of the first front mounting bracket by the first bolt, and the other end of the first front mounting bracket is fixedly connected to the first front fixing plate by the second bolt.

[0014] The first front clamp and the first front mounting bracket are used for connection to the frame of the unmanned helicopter.

[0015] In one possible design, the aforementioned integrated support and vibration damping device also includes a first joint bearing and a third bolt;

[0016] The first joint bearing and the third bolt are used to connect the first arch beam to the first damper mounting bracket.

[0017] In one possible design, the aforementioned integrated support and vibration damping device also includes a second joint bearing and a fourth bolt;

[0018] The second joint bearing and the fourth bolt are used to connect the first arch beam to the first damper adapter plate.

[0019] In one possible design, the aforementioned integrated support and vibration damping device also includes a first rear mounting bracket;

[0020] The second wire rope vibration damper is located between the first vibration damper adapter plate and the first rear mounting bracket; the structure of the second wire rope vibration damper is the same as that of the first wire rope vibration damper, the first fixed end of the second wire rope vibration damper is fixedly connected to the first vibration damper adapter plate, and the second fixed end of the second wire rope vibration damper is fixedly connected to the first rear mounting bracket.

[0021] In one possible design, the aforementioned integrated support and vibration damping device also includes a first rear clamp;

[0022] The first rear clamp is fixedly connected to the first rear mounting bracket; the first rear clamp and the first rear mounting bracket are used to connect to the frame of the unmanned helicopter.

[0023] In one possible design, the aforementioned integrated support and vibration damping device also includes a second arched beam; the structure of the second arched beam is mirror-symmetrical to the structure of the first arched beam.

[0024] In one possible design, the aforementioned integrated support and vibration damping device further includes a first connecting beam and a second connecting beam; the first connecting beam and the second connecting beam have the same structure and are parallel to each other;

[0025] The first connecting beam and the second connecting beam are located between the first arch beam and the second arch beam, and are used to connect the first arch beam and the second arch beam.

[0026] The present invention also provides an unmanned helicopter, including the aforementioned integrated support and vibration damping device for engine accessories;

[0027] The engine accessories for the unmanned helicopter include an expansion tank, ignition coil, capacitor, engine control module, and throttle servo.

[0028] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0029] (1) The present invention adopts an integrated support and vibration reduction device, which directly installs the unmanned helicopter engine components onto the integrated support and vibration reduction device, avoiding the situation of multiple fixed points and complex support structure caused by the multi-point support of the prior art.

[0030] (2) The present invention reduces the vibration of the engine accessories of the unmanned helicopter by setting the first wire rope vibration damper and the second wire rope vibration damper, which greatly reduces the vibration, improves the service life of the engine accessories, and increases the maintenance interval of the unmanned helicopter.

[0031] (3) By setting a second joint bearing between the first arch beam and the first damper transition plate, the present invention can reduce the installation error between the first arch beam and the first damper transition plate, and achieve less stress or no stress installation of the first arch beam and the first damper transition plate.

[0032] (4) The present invention mounts the lighter engine accessories together with other engine accessories on an integrated support device, thereby avoiding the difficulty of vibration reduction of the lighter parts.

[0033] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0034] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0035] Figure 1 This is a front view of the integrated support and vibration damping device of the present invention;

[0036] Figure 2 This is a top view of the integrated support and vibration damping device of the present invention;

[0037] Figure 3 This is a schematic diagram of the integrated support and vibration reduction device for fixing an unmanned helicopter and its engine accessories according to the present invention.

[0038] Figure 4 This is a schematic diagram of a symmetrical wire rope vibration damper.

[0039] Figure 5 for Figure 4 Side view.

[0040] Figure label:

[0041] 1-First bolt; 2-First front clamp; 3-First front mounting bracket; 4-Second bolt; 5-First front fixing plate; 6-First damper mounting bracket; 7-First arched beam; 8-First damper adapter plate; 9-First wire rope damper; 10-Second wire rope damper; 11-First spherical bearing; 12-Third bolt; 13-Second spherical bearing; 14-Fourth bolt; 15-First rear mounting bracket; 16-First rear clamp; 17-Second arched beam; 18-First connecting beam; 19-Second connecting beam; 2 0-Second shock absorber mounting bracket; 21-Second front mounting plate; 22-Second front mounting bracket; 23-Third joint bearing; 24-Fifth bolt; 25-Third wire rope shock absorber; 26-Fourth joint bearing; 27-Sixth bolt; 28-Fourth wire rope shock absorber; 29-Second rear mounting bracket; 30-Expansion tank mounting bracket; 31-Ignition coil; 32-Capacitor; 33-Engine control module; 34-Throttle servo; 35-Upper support plate; 36-Lower support plate; 37-Helical wire rope; 38-Perforation. Detailed Implementation

[0042] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0043] This invention provides an integrated support and vibration damping device for engine accessories, such as... Figures 1 to 3As shown, the integrated support and vibration damping device includes a first arched beam 7, a first vibration damper mounting frame 6, and a first vibration damper adapter plate 8; wherein, the first vibration damper mounting frame 6 and the first vibration damper adapter plate 8 are respectively located at both ends of the first arched beam 7; a first wire rope vibration damper 9 is provided on the first vibration damper mounting frame 6, and a second wire rope vibration damper 10 is provided on the first vibration damper adapter plate 8; the engine accessories are rigidly connected to the first arched beam 7, and the integrated support and vibration damping device is used to support and dampen the engine accessories of the unmanned helicopter.

[0044] The existing engine accessories use separate fixed supports, and rubber vibration dampers are used to reduce vibration of critical components, while other non-critical components are not damped or additional structures are designed for vibration reduction.

[0045] Compared with existing technologies, on the one hand, this invention adopts an integrated support and vibration damping device, directly mounting the unmanned helicopter engine components onto the integrated support and vibration damping device, avoiding the problems of multiple fixing points and complex support structures caused by the multi-point support of existing technologies. On the other hand, this invention provides overall vibration damping for the unmanned helicopter engine accessories by setting up a first wire rope vibration damper 9 and a second wire rope vibration damper 10, greatly reducing the vibration they experience.

[0046] It should be noted that the engine accessories of the unmanned helicopter mentioned in this invention include an expansion tank, an ignition coil 31, a capacitor 32, an engine control module 33, and a throttle servo 34; wherein, the expansion tank, ignition coil 31, capacitor 32, engine control module 33, and throttle servo 34 are all rigidly connected to the integrated support and vibration damping device and form an integral structure, and their respective installation positions correspond to the installation positions of the unmanned helicopter engine.

[0047] To more securely fix the first wire rope vibration damper 9, such as... Figure 1 As shown, the integrated support vibration damping device of the present invention further includes a first front fixing plate 5; a first wire rope vibration damper 9 is disposed between the first vibration damper mounting frame 6 and the first front fixing plate 5, and a first fixing end and a second fixing end are respectively provided symmetrically along the axial direction of the first wire rope vibration damper 9. The first wire rope vibration damper 9 is fixedly connected to the first vibration damper mounting frame 6 through its first fixing end, and fixedly connected to the first front fixing plate 5 through its second fixing end. The first vibration damper mounting frame 6 and the first front fixing plate 5 are used to fix the first wire rope vibration damper 9.

[0048] Specifically, the first shock absorber mounting bracket 6 and the first front fixing plate 5 are both rectangular plate structures. The first wire rope shock absorber 9 is located between the first shock absorber mounting bracket 6 and the first front fixing plate 5, and its two fixed ends are respectively fixedly connected to the first shock absorber mounting bracket 6 and the first front fixing plate 5 by bolts. In addition, the first front fixing plate 5 is also connected to the frame of the unmanned helicopter.

[0049] Compared with the prior art, the present invention fixes the first wire rope vibration damper 9 by the first vibration damper mounting bracket 6 and the first front fixing plate 5, and uses the first wire rope vibration damper 9 to reduce the vibration of engine accessories.

[0050] To enhance the robustness of the connection between the first arched beam 7 and the frame of the unmanned helicopter, such as Figure 1 As shown, the integrated support and vibration damping device of the present invention also includes a first front clamp 2 and a first front mounting bracket 3; the first front clamp 2 is fixedly connected to one end of the first front mounting bracket 3 by a first bolt 1, and the other end of the first front mounting bracket 3 is fixedly connected to the first front fixing plate 5 by a second bolt 4; the first front clamp 2 and the first front mounting bracket 3 are used to connect to the frame of the unmanned helicopter.

[0051] Specifically, one end of the first front clamp 2 and the first front mounting bracket 3 is held and locked to the frame of the unmanned helicopter by the first bolt 1, and the other end of the first front mounting bracket 3 is fixedly connected to the first front fixing plate 5 by the second bolt 4, thus realizing the connection between the first arched beam 7 and the frame of the unmanned helicopter.

[0052] Compared with the prior art, the present invention enhances the robustness of the frame connection of the unmanned helicopter through the first front clamp 2 and the first front fixing plate 5. In addition, the connection structure is simple and convenient for installation and disassembly.

[0053] To reduce the installation error between the first vibration damper mounting bracket 6 and the first arched beam 7, such as Figure 1 As shown, the integrated support vibration damping device of the present invention also includes a first joint bearing 11 and a third bolt 12; the first joint bearing 11 and the third bolt 12 are used to connect the first arch beam 7 and the first vibration damper mounting frame 6, that is, one end of the first arch beam 7 is connected to the first vibration damper mounting frame 6 through the first joint bearing 11 and the third bolt 12.

[0054] Specifically, one end of the first joint bearing 11 is fixedly connected to the end of the first arched beam 7 near the first damper mounting bracket 6, and the other end of the first joint bearing 11 is provided with a threaded hole. Additionally, a pair of connecting ears are provided on the end face of the first damper mounting bracket 6 opposite to the mounting end face of the first wire rope damper 9. Both connecting ears are provided with threaded holes. The third bolt 12 passes through the threaded holes in the connecting ears and the threaded holes in the first joint bearing 11, fixing the other end of the first joint bearing 11 to the first damper mounting bracket 6. It should be noted that a fastening nut is provided at both ends of the third bolt 12 to prevent the third bolt 12 from falling out of the corresponding threaded holes.

[0055] If the first arched beam 7 and the first vibration damper mounting frame 6 are directly fixedly connected, there will be a certain installation deviation and installation stress between them. The present invention reduces the installation error between the first arched beam 7 and the first vibration damper mounting frame 6 by setting a first joint bearing 11 between the first arched beam 7 and the first vibration damper mounting frame 6, thereby achieving low-stress or stress-free installation of the first arched beam 7 and the first vibration damper mounting frame 6.

[0056] Similarly, in order to reduce the installation error between the other end of the first arched beam 7 and the damper transition plate, such as Figure 1 As shown, the integrated support vibration damping device of the present invention also includes a second joint bearing 13 and a fourth bolt 14; the second joint bearing 13 and the fourth bolt 14 are used to connect the first arch beam 7 and the first vibration damper adapter plate 8, that is, the other end of the arch beam is fixedly connected to the vibration damper adapter plate through the second joint bearing 13 and the fourth bolt 14.

[0057] Specifically, the structure of the second joint bearing 13 is the same as that of the first joint bearing 11. One end of the second joint bearing 13 is fixedly connected to the end of the first arched beam 7 near the first damper adapter plate 8, and the other end of the second joint bearing 13 is provided with a threaded hole. In addition, a pair of connecting ears are provided on the first damper adapter plate 8, and the two connecting ears are also provided with threaded holes. The fourth bolt 14 connects the other end of the second joint bearing 13 to the first damper adapter plate 8 by passing through the threaded holes on the two connecting ears and the threaded hole on the second joint bearing 13. It should be noted that a fastening nut is provided at both ends of the fourth bolt 14 to prevent the fourth bolt 14 from falling out of the corresponding threaded hole.

[0058] If the first arched beam 7 and the first damper adapter plate 8 are directly fixedly connected, there will inevitably be a certain installation deviation and installation stress between them. The present invention reduces the installation error between the first arched beam 7 and the first damper adapter plate 8 by setting a second joint bearing 13 between the first arched beam 7 and the first damper adapter plate 8, thereby achieving less stress or no stress installation of the first arched beam 7 and the first damper adapter plate 8.

[0059] To more securely fix the second wire rope vibration damper 10, such as... Figure 1 As shown, the integrated support vibration damping device of the present invention also includes a first rear mounting bracket 15; a second wire rope vibration damper 10 is disposed between the first vibration damper adapter plate 8 and the first rear mounting bracket 15. The structure of the second wire rope vibration damper 10 is the same as that of the first wire rope vibration damper 9. The first fixed end of the second wire rope vibration damper 10 is fixedly connected to the first vibration damper adapter plate 8, and the second fixed end of the second wire rope vibration damper 10 is fixedly connected to the first rear mounting bracket 15. That is, the first vibration damper adapter plate 8 and the first rear mounting bracket 15 are used to fix the second wire rope vibration damper 10.

[0060] Specifically, both the first rear mounting bracket 15 and the first shock absorber adapter plate 8 are rectangular plate structures. The pair of connecting ears for connecting with the second joint bearing 13 are provided on one end face of the first shock absorber adapter plate 8. The opposite end face of this end face is used to fix the first fixed end of the second wire rope shock absorber 10. The second fixed end of the second wire rope shock absorber 10 is fixedly connected to one end face of the first rear mounting bracket 15. The other end face of the first rear mounting bracket 15 is provided with a clamp for connecting with the frame of the unmanned helicopter.

[0061] Compared with the prior art, the present invention fixes the second wire rope vibration damper 10 by the first rear mounting bracket 15 and the first vibration damper adapter plate 8, avoiding the direct connection between the first arch beam 7, which is fixed with engine accessories, and the frame of the unmanned helicopter, thereby reducing the vibration of the engine accessories.

[0062] It should be noted that the integrated support and vibration damping device of the present invention also includes a first rear clamp 16; the first rear clamp 16 is fixedly connected to the first rear mounting bracket 15; the first rear clamp 16 and the first rear mounting bracket 15 are used to connect to the frame of the unmanned helicopter.

[0063] Compared with the prior art, the first rear clamp 16 and the clamp on the first rear mounting bracket 15 can be fixed with bolts to hold and lock onto the frame of the unmanned helicopter, thus achieving a firm connection between the other end of the first arched beam 7 and the frame of the unmanned helicopter.

[0064] It needs to be emphasized that, such as Figure 2 and Figure 3 As shown, the integrated support vibration reduction device of the present invention further includes a second arched beam 17, a first connecting beam 18, and a second connecting beam 19; wherein, the second arched beam 17 is mirror-symmetrical to the first arched beam 7; the first connecting beam 18 and the second connecting beam 19 have the same structure, and the first connecting beam 18 and the second connecting beam 19 are arranged parallel between the first arched beam 7 and the second arched beam 17, and are used to connect the first arched beam 7 and the second arched beam 17.

[0065] Specifically, a first connecting beam 18 and a second connecting beam 19 are provided between the first arched beam 7 and the second arched beam 17. The two ends of the first connecting beam 18 and the second connecting beam 19 are rigidly connected to the first arched beam 7 and the second arched beam 17, respectively. The first arched beam 7, the second arched beam 17, the first connecting beam 18, and the second connecting beam 19 together constitute the main frame of the integrated support vibration damping device. An expansion tank mounting bracket 30 is provided on the first connecting beam 18, and the expansion tank is mounted on the expansion tank mounting bracket 30. Additionally, two ignition coil mounting brackets are located on the first arched beam 7, between the first connecting beam 18 and the second connecting beam 19, and two ignition coils 31 are correspondingly mounted on the ignition coil mounting brackets. A capacitor mounting bracket is provided on the second arched beam 17, and a capacitor 32 is fixed on the capacitor mounting bracket. An engine control module mounting bracket is provided between the first arched beam 7 and the second arched beam 17, and an engine control module 33 is fixed on the engine control module mounting bracket. It should also be noted that a throttle servo mounting bracket is provided at one end of the first arched beam 7 near the first shock absorber adapter plate 8, and the throttle servo 34 is fixed on the throttle servo mounting bracket.

[0066] Compared with existing technologies, this invention rigidly connects the expansion tank, ignition coil 31, capacitor 32, engine control module 33, and throttle servo 34 to the main frame of an integrated support and vibration damping device composed of a first arched beam 7, a second arched beam 17, a first connecting beam 18, and a second connecting beam 19, avoiding multi-point support. Compared with the multi-point independent support structure used in existing technologies, the integrated support and vibration damping device of this invention is lighter, which is more conducive to the flight of unmanned helicopters. In addition, the integrated support and vibration damping device makes the installation of engine accessories more compact and reduces the length of wiring harnesses and pipes. Furthermore, by setting a first wire rope vibration damper 9 and a second wire rope vibration damper 10 at both ends of the main frame, this invention reduces the impact of the engine on engine accessories and achieves overall vibration damping of engine accessories.

[0067] It should be noted that, as Figure 2 As shown, the first arched beam 7 and the second arched beam 17 of the present invention are mirror-symmetrical.

[0068] Specifically, one end of the second arched beam 17 of the present invention is provided with a third joint bearing 23, a second vibration damper mounting bracket 20, a third wire rope vibration damper 25, a second front fixing plate 21, a second front mounting bracket 22, and a second front clamp in sequence; wherein, the second vibration damper mounting bracket 20 and the second front fixing plate 21 are both rectangular plate structures, and the second vibration damper mounting bracket 20 is integrally formed with the first vibration damper mounting bracket 6, the second front fixing plate 21 is integrally formed with the first front fixing plate 5, the third wire rope vibration damper 25 is disposed between the second vibration damper mounting bracket 20 and the second front fixing plate 21, and the two fixed ends of the third wire rope vibration damper 25 are respectively fixedly connected to the second vibration damper mounting bracket 20 and the second front fixing plate 21 by bolts, and then the second front fixing plate 21 is used to connect to the frame of the unmanned helicopter.

[0069] Compared with the prior art, the present invention fixes the third wire rope vibration damper 25 by the second vibration damper mounting bracket 20 and the second front fixing plate 21, which can reduce the vibration of the engine accessory rigidly connected to the second arch beam 17.

[0070] To enhance the robustness of the connection between the second arched beam 17 and the frame of the unmanned helicopter, one end of the second front clamp and the second front mounting bracket 22 of the present invention is bolted to the frame of the unmanned helicopter and locked thereon, and the other end of the second front mounting bracket 22 is bolted to the second front fixing plate 21, thus achieving the connection between one end of the second arched beam 17 and the frame of the unmanned helicopter.

[0071] Compared with the prior art, the present invention enhances the robustness of the frame connection of the unmanned helicopter through the second front clamp and the second front fixing plate 21. In addition, the connection structure is simple and convenient for installation and disassembly.

[0072] To reduce the installation error between the second damper mounting bracket 20 and one end of the second arched beam 17, such as Figure 2 As shown, one end of the second arched beam 17 is connected to the second damper mounting bracket 20 via the third joint bearing 23 and the fifth bolt 24.

[0073] Specifically, one end of the third joint bearing 23 is fixedly connected to the end of the second arched beam 17 near the second damper mounting bracket 20, and the other end of the third joint bearing 23 is provided with a threaded hole. In addition, a pair of connecting ears are provided on the end face of the second damper mounting bracket 20 opposite to the mounting end face of the third wire rope damper 25. Both connecting ears are provided with threaded holes. The fifth bolt 24 connects the other end of the third joint bearing 23 to the second damper mounting bracket 20 by passing through the threaded holes on the two connecting ears and the threaded hole on the third joint bearing 23.

[0074] The present invention reduces the installation error between the second arch beam 17 and the second vibration damper mounting frame 20 by setting a third joint bearing 23 between the second arch beam 17 and the second vibration damper mounting frame 20, thereby achieving low-stress or stress-free installation of the second arch beam 17 and the second vibration damper mounting frame 20.

[0075] It should be noted that the other end of the second arched beam 17 is provided with a fourth joint bearing 26, a second damper adapter plate, a fourth wire rope damper 28, a second rear mounting bracket 29, and a second rear clamp in sequence.

[0076] To reduce the installation error between the other end of the second arched beam 17 and the second damper adapter plate, the other end of the second arched beam 17 is fixedly connected to the second damper adapter plate via the fourth joint bearing 26 and the sixth bolt 27.

[0077] Specifically, the structure of the fourth joint bearing 26 is the same as that of the first joint bearing 11. One end of the fourth joint bearing 26 is fixedly connected to the end of the second arched beam 17 near the second damper adapter plate, and the other end of the fourth joint bearing 26 is provided with a threaded hole. In addition, a pair of connecting ears are provided on the second damper adapter plate, and the two connecting ears are also provided with threaded holes. The sixth bolt 27 connects the other end of the fourth joint bearing 26 to the second damper adapter plate by passing through the threaded holes on the two connecting ears and the threaded hole on the fourth joint bearing 26. It should be noted that a fastening nut is provided at both ends of the sixth bolt 27. The fastening nut is used to prevent the sixth bolt 27 from falling out of the corresponding threaded hole.

[0078] By setting a fourth joint bearing 26 between the second arch beam 17 and the second vibration damper transition plate, the present invention can reduce the installation error between the second arch beam 17 and the second vibration damper transition plate, and achieve less stress or no stress installation of the second arch beam 17 and the second vibration damper transition plate.

[0079] To more securely fix the fourth wire rope vibration damper 28, the present invention utilizes a second vibration damper adapter plate and a second rear mounting bracket 29 for fixing the fourth wire rope vibration damper 28. The fourth wire rope vibration damper 28 is disposed between the second vibration damper adapter plate and the second rear mounting bracket 29. The structure of the fourth wire rope vibration damper 28 is the same as that of the first wire rope vibration damper 9. The first fixed end of the fourth wire rope vibration damper 28 is fixedly connected to the second vibration damper adapter plate, and the second fixed end of the fourth wire rope vibration damper 28 is fixedly connected to the second rear mounting bracket 29. That is, the second vibration damper adapter plate and the second rear mounting bracket 29 are used to fix the fourth wire rope vibration damper 28.

[0080] Specifically, both the second rear mounting bracket 29 and the second shock absorber adapter plate are rectangular plate structures. The pair of connecting ears for fixed connection with the fourth joint bearing 26 are provided on one end face of the second shock absorber adapter plate. The opposite end face of this end face is used for fixed connection with the first fixed end of the fourth wire rope shock absorber 28. The second fixed end of the fourth wire rope shock absorber 28 is fixedly connected to one end face of the second rear mounting bracket 29. The other end face of the second rear mounting bracket 29 is provided with a clamp for connection with the frame of the unmanned helicopter.

[0081] Compared with the prior art, the present invention fixes the fourth wire rope vibration damper 28 by the second rear mounting bracket 29 and the second vibration damper adapter plate, avoiding the direct connection between the second arch beam 17, which is fixed with engine accessories, and the frame of the unmanned helicopter, thereby reducing the vibration of the engine accessories.

[0082] It should be noted that the second rear clamp of the present invention is fixedly connected to the second rear mounting bracket 29; the second rear clamp and the second rear mounting bracket 29 are used to connect to the frame of the unmanned helicopter.

[0083] Compared with the existing technology, the second rear clamp and the clamp on the second rear mounting bracket 29 can be fixed with bolts to hold and lock onto the frame of the unmanned helicopter, thus achieving a firm connection between the other end of the second arch beam 17 and the frame of the unmanned helicopter.

[0084] The present invention utilizes an integrated support and vibration damping device to support and dampen the engine accessories of an unmanned helicopter. The process includes: First, the engine accessories (including an expansion tank, ignition coil 31, capacitor 32, engine control module 33, and throttle servo 34) are installed onto a main frame composed of a first arched beam 7, a second arched beam 17, a first connecting beam 18, and a second connecting beam 19. The engine accessories are rigidly connected to the main frame to form an integral structure. Then, one end of the first arched beam 7 is fixed to the unmanned helicopter via a first joint bearing 11, a first vibration damper mounting bracket 6, a first wire rope vibration damper 9, a first front fixing plate 5, a first front mounting bracket 3, and a first front clamp 2. On the frame of the manned helicopter, one end of the second arched beam 17 is fixed to the frame of the unmanned helicopter via the third joint bearing 23, the second shock absorber mounting bracket 20, the third wire rope shock absorber 25, the second front fixing plate 21, the second front mounting bracket 22, and the second front clamp; one end of the second arched beam 17 is fixed to the frame of the unmanned helicopter via the second joint bearing 13, the first shock absorber adapter plate 8, the second wire rope shock absorber 10, the first rear mounting bracket 15, and the first rear clamp 16; the other end of the second arched beam 17 is fixed to the frame of the unmanned helicopter via the fourth joint bearing 26, the second shock absorber adapter plate, the fourth wire rope shock absorber 28, the second rear mounting bracket 29, and the second rear clamp. Finally, after both ends of the first arched beam 7 and the second arched beam 17 are fixedly connected to the frame of the unmanned helicopter, the engine accessories and the aforementioned main frame do not directly contact the engine. Instead, they contact the engine on the unmanned helicopter through the first wire rope vibration damper 9 to the fourth wire rope vibration damper 28. When the engine is working, the impact on the engine accessories can be greatly reduced, thus achieving the purpose of vibration reduction.

[0085] It should be noted that, as Figure 4 and Figure 5 As shown, the first wire rope vibration damper 9, the second wire rope vibration damper 10, the third wire rope vibration damper 25, and the fourth wire rope vibration damper 28 of the present invention have the same structure and are all symmetrical wire rope vibration dampers. Each symmetrical wire rope vibration damper includes an upper support plate 35, a lower support plate 36, and a spiral wire rope 37. The upper support plate 35 and the lower support plate 36 are both rectangular steel plates, and the upper support plate 35 and the lower support plate 36 are arranged in parallel. A plurality of through holes 38 are provided on both the upper support plate 35 and the lower support plate 36. The number of through holes 38 on the upper support plate 35 is equal to the number of through holes 38 on the lower support plate 36, and their positions are corresponding.

[0086] When the spiral steel wire rope 37 is fixed between the upper support plate 35 and the lower support plate 36, the spiral steel wire rope 37 is sequentially threaded through the holes 38 of the upper support plate 35 and the lower support plate 36 along one end of the upper support plate 35 and the lower support plate 36; when it reaches the middle of the upper support plate 35 and the lower support plate 36, it only passes through two adjacent holes 38 on the upper support plate 35 (the spiral steel wire rope 37 is not threaded through the two corresponding holes 38 on the lower support plate 36). Then, the spiral wire rope 37 continues to be threaded through the holes 38 on the upper support plate 35 and the lower support plate 36 in sequence. That is, the hole 38 of the rear section of the spiral wire rope 37 is threaded in the same way as the hole 38 of the front section. After the spiral wire rope 37 has completed the threading of the holes 38, the front and rear sections of the spiral wire rope 37 are symmetrical about the center line of the upper support plate 35 and the lower support plate 36. At the same time, the two holes 38 on the lower support plate 36 that have not been threaded with the spiral wire rope 37 are also symmetrical about the center line.

[0087] After the helical wire rope 37 is pre-bent and fixed, the elastic force generated by the helical wire rope 37 itself can support the upper support plate 35 and the lower support plate 36, maintaining a fixed distance between the upper support plate 35 and the lower support plate 36. When the symmetrical wire rope vibration damper receives vibration, the helical wire rope 37 can offset part of the vibration through deformation, thereby playing a vibration damping role. In summary, this invention installs all engine accessories onto an integrated support vibration damping device and performs overall vibration damping design on the integrated support vibration damping device and the engine accessories fixed on the integrated support vibration damping device.

[0088] It should be noted that the present invention also provides an unmanned helicopter, including the aforementioned integrated support and vibration damping device for engine accessories.

[0089] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated support and vibration damping device for engine accessories, characterized in that, Includes the first arch beam, the first damper mounting bracket, and the first damper adapter plate; The first vibration damper mounting bracket and the first vibration damper adapter plate are respectively located at both ends of the first arch beam; the first vibration damper mounting bracket is equipped with a first wire rope vibration damper, and the first vibration damper adapter plate is equipped with a second wire rope vibration damper. The engine accessory is rigidly connected to the first arched beam, and the integrated support and vibration damping device is used to support and dampen the engine accessory of the unmanned helicopter. It also includes a first front fixing plate; The first wire rope vibration damper is disposed between the first vibration damper mounting frame and the first front fixing plate. A first fixing end and a second fixing end are respectively provided symmetrically along the axial direction of the first wire rope vibration damper. The first wire rope vibration damper is fixedly connected to the first vibration damper mounting frame through its first fixing end and fixedly connected to the first front fixing plate through its second fixing end. It also includes the first front clamp and the first front mounting bracket; The first front clamp is fixedly connected to one end of the first front mounting bracket by a first bolt, and the other end of the first front mounting bracket is fixedly connected to the first front fixing plate by a second bolt. The first front clamp and the first front mounting bracket are used to connect to the frame of the unmanned helicopter; It also includes the first rear mounting bracket; The second wire rope vibration damper is disposed between the first vibration damper adapter plate and the first rear mounting bracket; the structure of the second wire rope vibration damper is the same as that of the first wire rope vibration damper, the first fixed end of the second wire rope vibration damper is fixedly connected to the first vibration damper adapter plate, and the second fixed end of the second wire rope vibration damper is fixedly connected to the first rear mounting bracket. It also includes the first rear clamp; The first rear clamp is fixedly connected to the first rear mounting bracket; the first rear clamp and the first rear mounting bracket are used to connect to the frame of the unmanned helicopter; The engine accessory is rigidly connected to the first arched beam to form an integral structure; the engine accessory and the first arched beam do not directly contact the engine; The engine accessories of the unmanned helicopter include an expansion tank, an ignition coil, a capacitor, an engine control module, and a throttle servo.

2. The integrated support and vibration damping device for engine accessories according to claim 1, characterized in that, It also includes the first joint bearing and the third bolt; The first joint bearing and the third bolt are used to connect the first arched beam to the first shock absorber mounting bracket.

3. The integrated support and vibration damping device for engine accessories according to claim 1, characterized in that, It also includes a second joint bearing and a fourth bolt; The second joint bearing and the fourth bolt are used to connect the first arched beam to the first shock absorber adapter plate.

4. The integrated support and vibration damping device for engine accessories according to claim 3, characterized in that, It also includes a second arched beam; the structure of the second arched beam is mirror-symmetrical to the structure of the first arched beam.

5. The integrated support and vibration damping device for engine accessories according to claim 4, characterized in that, It also includes a first connecting beam and a second connecting beam; the first connecting beam and the second connecting beam have the same structure and are parallel to each other; The first connecting beam and the second connecting beam are disposed between the first arch beam and the second arch beam, and are used to connect the first arch beam and the second arch beam.

6. An unmanned helicopter, characterized in that, An integrated support and vibration damping device for engine accessories as described in any one of claims 1 to 5.

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