Blade structure for cross-domain aircraft
By introducing a speed-limiting structure into the propeller system of the cross-domain vehicle, the problem of propeller damage during speed switching is solved, thus achieving propeller protection and improving the safety and efficiency of the vehicle.
Patent Information
- Application Number
- CN202520120885.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-20
AI Technical Summary
When a cross-domain vehicle switches from water to air, the propeller blades may be damaged due to the rapid increase in rotational speed, affecting performance and safety.
Design a blade system that includes a drive shaft, drive gears, mounting structure, blade structure, and speed limiting structure. The speed limiting structure limits the blade speed under set conditions to protect the blade from damage.
It effectively protects the propeller blades from damage during high-speed rotation, ensuring the navigation efficiency and safety of cross-domain vehicles.
Smart Images
Figure CN223764695U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aircraft technology, specifically to a propeller structure for trans-domain aircraft. Background Technology
[0002] A trans-domain vehicle is a new concept vehicle capable of navigating across different media environments (such as air and water). Breaking the limitations of traditional navigation vehicles that can only operate in a single medium, trans-domain vehicles can comprehensively utilize the advantages of different media environments, playing a vital role in many fields such as underwater and aerial observation and marine scientific research. Trans-domain vehicles integrate multiple systems adapted to the characteristics of different media. For example, in terms of the propulsion system, when the vehicle is in water, it travels at a relatively low speed to meet the specific speed requirements of underwater navigation; however, once it enters the air, due to the significant difference in density and viscosity between air and water, the trans-domain vehicle adjusts its power output to fly at a higher speed to meet the demands of rapid movement in aerial navigation. The design of the trans-domain vehicle's propellers plays a crucial role in this process.
[0003] Because the transition time between water and air for transoceanic vehicles is short, the propeller blades need to rapidly increase their rotational speed to adapt to the differences in density and viscosity of different media. During the speed transition, if the propeller blades exceed their design limits, they may be damaged due to excessive centrifugal force and mechanical stress. This damage will reduce the performance and lifespan of the propeller blades, affecting the overall stability and safety of the transoceanic vehicle.
[0004] Therefore, how to design a propeller structure for cross-domain vehicles that can protect the propeller blades from damage due to high-speed rotation when the vehicle switches speeds is an unsolved technical problem in the existing technology. Utility Model Content
[0005] Therefore, the technical problem to be solved by this utility model is to overcome the technical defects in the prior art where the switching time of the cross-domain vehicle from water to air is short and the propeller blades may be damaged during the rapid increase of rotation speed. Thus, a propeller blade structure for cross-domain vehicles is provided that can protect the propeller blades and prevent them from being damaged due to high-speed rotation when the cross-domain vehicle is switching speeds.
[0006] Therefore, this utility model provides a propeller structure for a trans-domain vehicle, comprising: a drive shaft; a drive gear, fixedly mounted on the drive shaft and capable of being driven by power to rotate the drive shaft; a mounting structure for rotatably fixing the drive shaft to the vehicle; a propeller structure mounted on one end of the drive shaft and capable of being driven to rotate by the drive shaft; and a speed limiting structure mounted between the other end of the drive shaft and the mounting structure for limiting the rotational speed of the propeller structure under certain conditions.
[0007] As a preferred embodiment, the speed limiting structure includes: a first reduction disc, fixed to the end face of the mounting structure facing the other end of the drive shaft, with a first circular through hole in the middle for the drive shaft to rotatably pass through; a second reduction disc, sleeved on the drive shaft, with one end opposite to the first reduction disc; and an elastic telescopic member, one end fixedly connected to the other end of the drive shaft and the other end fixedly connected to the other end of the second reduction disc; when the rotational speed of the drive shaft is lower than the set rotational speed, the second reduction disc does not contact the first reduction disc, and does not limit the rotational speed of the blade structure; when the rotational speed of the drive shaft is higher than the set rotational speed, the second reduction disc moves under inertia to contact and rub against the first reduction disc, thereby limiting the rotational speed of the blade structure.
[0008] As a preferred embodiment, the first reduction disc has a uniformly distributed first wave-shaped protrusion on the disc surface facing the second reduction disc; the second reduction disc has a uniformly distributed second wave-shaped protrusion on the disc surface facing the first reduction disc; the first wave-shaped protrusion and the second wave-shaped protrusion are matched and arranged.
[0009] As a preferred embodiment, it also includes a shock-absorbing disc made of rubber, which is fixedly disposed on the end face of the mounting structure facing the other end of the drive shaft, and the first speed reduction disc is fixedly mounted on the shock-absorbing disc.
[0010] As a preferred embodiment, the other end of the elastic telescopic member is fixedly connected to the other end of the transmission shaft via a first fixing structure. The first fixing structure includes: a first fixing plane, disposed at the other end of the transmission shaft and disposed in a direction parallel to the axial direction of the transmission shaft; a first fixing vertical surface, disposed at the other end of the transmission shaft and disposed in a direction perpendicular to the axial direction of the transmission shaft; one end of the first fixing vertical surface is connected to one end of the first fixing plane, forming a right angle; a fixing end cap, having an end cap mounting hole in the middle, and a second fixing plane on the inner side of the end cap mounting hole; after the fixing end cap is fitted onto the other end of the transmission shaft, the second fixing plane is in close contact with the first fixing plane, and the inner side of the fixing end cap is in close contact with the first fixing vertical surface; the portion of the transmission shaft that extends out of the end cap mounting hole is also provided with a first fixing thread, and a first fixing nut is threaded onto the first fixing thread, thereby pressing and fixing the fixing end cap between the first fixing nut and the first fixing vertical surface.
[0011] As a preferred embodiment, the mounting structure includes: a mounting shell with a first mounting through hole extending axially for the drive shaft to pass through; the mounting shell is fixedly mounted on the transoceanic vehicle by bolts; and at least two bearings, with the outer ring fixedly mounted inside the mounting through hole and the inner ring fixedly sleeved on the drive shaft, for rotatably mounting the drive shaft on the mounting shell.
[0012] As a preferred embodiment, the transmission gear has a through-hole in its center and a through-hole communicating with the through-hole; the transmission gear is fixedly mounted on the transmission shaft by a second fixing structure; the second fixing structure includes: a gear retaining ring integrally formed on the transmission shaft, wherein after the transmission shaft is installed into the mounting housing through the first mounting through-hole, the gear retaining ring abuts against the inner ring of the bearing; a keyway formed on the transmission shaft, one end extending to contact the gear retaining ring, and the other end having a mounting thread on the outer wall of the transmission shaft; a flat key installed inside the first mounting space formed by the keyway and the mounting keyhole, circumferentially fixing the transmission gear to the transmission shaft; and a gear retaining nut fitted on the transmission shaft and threadedly connected to the mounting thread, pressing and fixing the transmission gear between the gear retaining nut and the gear retaining ring.
[0013] As a preferred embodiment, the blade structure includes: an inner half-shell, fixedly mounted on one end of the drive shaft by a third fixing structure; a first inner cavity is formed in the middle of the outer side of the inner half-shell; at least three first blade mounting half-cavities, not communicating with the first inner cavity, are provided around the circumference of the first inner cavity; a first semi-annular limiting groove is formed at the end of the first blade mounting half-cavities facing the first inner cavity; and an outer half-shell, disposed opposite to the inner half-shell, having a second inner cavity in the middle of the side facing the inner half-shell; at least three second blade mounting half-cavities, not communicating with the second inner cavity, are provided around the circumference of the second inner cavity; a second semi-annular limiting groove is formed at the end of the second blade mounting half-cavities facing the second inner cavity; the outer half-shell and the inner half-shell are capable of... The blades are fastened together and fixedly connected by bolts; the first blade mounting half cavity and the second blade mounting half cavity respectively form a second mounting space relative to each other, at which time the first semi-annular limiting groove and the second semi-annular limiting groove relative to each other form a complete annular limiting groove; the first inner cavity and the second inner cavity relative to each other form a third mounting space; there are at least three blades, each having a blade body and a blade mounting flange disposed at one end of the blade body, the blade mounting flange being able to be installed into the first semi-annular limiting groove and the second semi-annular limiting groove, and the part of the blade body connected to the blade mounting flange being able to be installed into the second mounting space; a loading and unloading through hole is also provided in the middle of the outer half shell, penetrating the outer half shell and communicating with the second inner cavity.
[0014] As a preferred embodiment, the third fixing structure includes: a third fixing plane disposed at one end of the transmission shaft, with its direction parallel to the axial direction of the transmission shaft; a second fixing surface disposed at one end of the transmission shaft, with its direction perpendicular to the axial direction of the transmission shaft; one end of the second fixing surface is connected to one end of the third fixing plane, forming a right angle; an inner half-shell mounting hole is provided in the middle of the inner half-shell, and a fourth fixing plane is provided on the inner side of the inner half-shell mounting hole; after the inner half-shell is sleeved on one end of the transmission shaft, the fourth fixing plane is in close contact with the third fixing plane, and the outer side of the inner half-shell is in close contact with the second fixing surface; a second fixing thread is also provided on the portion of the transmission shaft that protrudes from the inner half-shell mounting hole, and a second fixing nut is threaded onto the second fixing thread, thereby pressing and fixing the inner half-shell between the second fixing nut and the second fixing surface.
[0015] As a preferred embodiment, it also includes a fixed cover plate, which is fixedly installed on the side of the outer half shell away from the inner half shell; a plurality of cover plate fixing shafts are fixedly provided on one side of the fixed cover plate, and the free end of the cover plate fixing shaft is provided with an external thread; the cover plate fixing shaft passes through a plurality of connecting through holes opened on the outer half shell around the loading and unloading through hole and is threadedly connected to a connecting nut, thereby being installed on the outer half shell.
[0016] The technical solution provided by this utility model has the following advantages:
[0017] The present invention relates to a propeller structure for a trans-domain vehicle, comprising a drive shaft, a drive gear, a mounting structure, a propeller structure, and a speed limiting structure; wherein the drive gear is fixedly mounted on the drive shaft and can be driven by power to rotate the drive shaft; the mounting structure is used to rotatably fix the drive shaft on the vehicle; the propeller structure is mounted on one end of the drive shaft and can be driven to rotate by the drive shaft; the speed limiting structure is mounted between the other end of the drive shaft and the mounting structure and is used to limit the rotational speed of the propeller structure under certain conditions.
[0018] When using the propeller structure for inter-domain vehicles of this invention, the device is first installed on the inter-domain vehicle via an installation structure. Then, a power source drives a transmission gear, which in turn drives a transmission shaft to rotate, thereby causing some components of the propeller structure and the speed-limiting structure to rotate synchronously. In this invention, when the propeller structure's rotational speed exceeds a set speed, the speed-limiting structure restricts the propeller's rotational speed to protect it. Conversely, when the propeller structure's rotational speed is below the set speed, the speed-limiting structure does not restrict the propeller's rotational speed, ensuring the efficiency and safety of the inter-domain vehicle's normal navigation. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the prior art or specific embodiments of this utility model, the accompanying drawings used in the description of the prior art or specific embodiments are briefly introduced below.
[0020] Figure 1 This is a schematic diagram of the overall structure of the propeller structure of this utility model for cross-domain navigation vehicles.
[0021] Figure 2 yes Figure 1 Enlarged structural diagram of part A.
[0022] Figure 3 yes Figure 2 A schematic diagram of the explosive structure of the medium-speed limiting structure.
[0023] Figure 4 yes Figure 2 A schematic diagram of the exploded structure of section B.
[0024] Figure 5 yes Figure 2 A schematic diagram of the exploded structure of the propeller blade.
[0025] Figure 6 yes Figure 5 Another stereoscopic view.
[0026] Figure 7 yes Figure 5 A schematic diagram of the exploded structure of section C.
[0027] Reference numerals: 1. Blade structure; 11. Inner half-shell; 110. First inner cavity; 111. First blade mounting half-cavity; 112. First semi-annular limiting groove; 113. Inner half-shell mounting hole; 12. Outer half-shell; 120. Second inner cavity; 121. Second blade mounting half-cavity; 122. Second semi-annular limiting groove; 123. Loading / unloading through hole; 13. Fixing cover plate; 131. Cover plate fixing shaft; 14. Blade; 141. Blade mounting flange; 142. Blade body; 20. Drive shaft; 21. Drive gear; 210. Mounting round hole; 211. Mounting keyhole; 22. Flat key; 23. Keyway; 24. Gear retaining ring; 25. Gear retaining nut; 26. Mounting ring; 3. Installation structure; 31. Mounting shell; 310. First mounting through hole; 32. Bearing; 4. Speed limiting structure; 41. Fixed end cover; 410. End cover mounting hole; 411. Second fixed plane; 42. Elastic telescopic component; 43. Second reduction disc; 431. Second wave-shaped protrusion; 44. First reduction disc; 440. First disc through hole; 441. First wave-shaped protrusion; 45. Shock absorber disc; 51. First fixed plane; 52. First fixed vertical surface; 53. First fixed thread; 54. First fixed nut; 61. Third fixed plane; 62. Second fixed vertical surface; 63. Fourth fixed plane; 64. Second fixed thread; 65. Second fixed nut. Detailed Implementation
[0028] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.
[0029] It should be noted that the terms "first," "second," etc., in the claims and specification of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process, method, system, product, or device that includes a series of steps or units, not limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0031] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Example
[0032] This embodiment provides a propeller structure for a cross-domain vehicle, such as... Figure 1-2 As shown, it includes: a drive shaft 20, a drive gear 21, a mounting structure 3, a propeller structure 1, and a speed limiting structure 4; wherein the drive gear 21 is fixedly mounted on the drive shaft 20 and can be driven by power, thereby driving the drive shaft 20 to rotate; the mounting structure 3 is used to rotatably fix the drive shaft 20 on the aircraft; the propeller structure 1 is mounted on one end of the drive shaft 20 and can be driven to rotate by the drive shaft 20; the speed limiting structure 4 is mounted between the other end of the drive shaft 20 and the mounting structure 3, and is used to limit the speed of the propeller structure under certain conditions.
[0033] When using the propeller structure for inter-domain vehicles according to this embodiment, the device is first installed on the inter-domain vehicle via the mounting structure 3. Then, the transmission gear 21 is driven by the power source to rotate the transmission shaft 20, which in turn drives some components of the propeller structure 1 and the speed limiting structure 4 to rotate synchronously. In this embodiment, when the rotational speed of the propeller structure 1 is higher than the set rotational speed, the speed limiting structure 4 limits the rotational speed of the propeller to protect the propeller. When the rotational speed of the propeller structure 1 is lower than the set rotational speed, the speed limiting structure 4 does not limit the rotational speed of the propeller structure 1 to ensure the efficiency and safety of the inter-domain vehicle's normal navigation.
[0034] like Figure 3 As shown, the speed limiting structure 4 includes: a first reduction disc 44, a second reduction disc 43, and an elastic telescopic member 42; wherein the first reduction disc 44 is fixed on the end face of the mounting structure 3 facing the other end of the drive shaft 20, and has a first circular through hole 440 in the middle for the drive shaft 20 to rotatably pass through; the second reduction disc 43 is sleeved on the drive shaft 20, with one end opposite to the first reduction disc 44; one end of the elastic telescopic member 42 is fixedly connected to the other end of the drive shaft 20, and the other end is fixedly connected to the other end of the second reduction disc 43; when the rotational speed of the drive shaft 20 is lower than the set rotational speed, the second reduction disc 43 does not contact the first reduction disc 44, and does not limit the rotational speed of the blade structure 1; when the rotational speed of the drive shaft 20 is higher than the set rotational speed, the second reduction disc 43 moves under inertia to contact and rub against the first reduction disc 44, thereby limiting the rotational speed of the blade structure 1.
[0035] In this embodiment, the second reduction disc 43 has a certain weight. When the rotational speed of the drive shaft 20 is lower than the set speed, the elastic telescopic member 42 maintains its normal length, and the second reduction disc 43 does not contact the first reduction disc 44, thus not limiting the rotational speed of the propeller structure 1. When the rotational speed of the drive shaft 20 is higher than the set speed, the second reduction disc 43 adheres to the first reduction disc 44 under inertia, reducing the rotational speed of the drive shaft 20 through friction between the two to protect the propeller. At this time, the elastic telescopic member 42 deforms and lengthens. When the rotational speed of the drive shaft 20 decreases to the set speed, the elastic telescopic member 42 gradually recovers and pulls the second reduction disc 43 away from the first reduction disc 44, eventually pulling it back to its original position, thus not affecting the normal navigation of the transoceanic vehicle. When the rotational speed is limited, the rotation direction of the second reduction disc 43 is the direction of tightening the elastic telescopic member to prevent the spring from loosening and being damaged.
[0036] The first reduction disc 44 has uniformly distributed first wave-shaped protrusions 441 on its surface facing the second reduction disc 43; the second reduction disc 43 has uniformly distributed second wave-shaped protrusions 431 on its surface facing the first reduction disc 44; the first wave-shaped protrusions 441 and the second wave-shaped protrusions 431 are matched and arranged. The wave-shaped protrusions 441 and 431 increase the friction of the contact surface and improve the deceleration effect.
[0037] It also includes a shock absorber 45, which is made of rubber and is fixedly mounted on the end face of the mounting structure 3 facing the other end of the drive shaft 20. The first deceleration disc 44 is fixedly mounted on the shock absorber 45. The shock absorber 45 can effectively absorb the vibration generated by the friction between the first wave protrusion 441 and the second wave protrusion 431 during deceleration, making the deceleration process smoother, reducing damage to the aircraft, and improving the service life of the aircraft.
[0038] The other end of the elastic telescopic member 42 is fixedly connected to the other end of the transmission shaft 20 via a first fixing structure. The first fixing structure includes a first fixing plane 51, a first fixing vertical surface 52, and a fixing end cap 41. The first fixing plane 51 is disposed at the other end of the transmission shaft 20, and its setting direction is parallel to the axial direction of the transmission shaft 20. The first fixing vertical surface 52 is disposed at the other end of the transmission shaft 20, and its setting direction is perpendicular to the axial direction of the transmission shaft 20. One end of the first fixing vertical surface 52 is connected to one end of the first fixing plane 51, forming a right angle. The fixing end cap 41 has an end cap mounting hole in its middle. 410, the inner side of the end cap mounting hole 410 is provided with a second fixing plane 411; after the fixing end cap 41 is sleeved on the other end of the transmission shaft 20, the second fixing plane 411 is in close contact with the first fixing plane 51, and the inner side of the fixing end cap 41 is in close contact with the first fixing surface 52; the portion of the transmission shaft 20 that passes through the end cap mounting hole 410 is also provided with a first fixing thread 53, and a first fixing nut 54 is threaded onto the first fixing thread 53, thereby pressing and fixing the fixing end cap 41 between the first fixing nut 54 and the first fixing surface 52. The first fixing structure firmly fixes the elastic telescopic member 42 to the other end of the transmission shaft 20, ensuring the stability of the structure.
[0039] like Figure 4As shown, the mounting structure 3 includes a mounting shell 31 and a bearing 32; wherein the mounting shell 31 has a first mounting through hole 310 extending axially for the transmission shaft 20 to pass through; the mounting shell 31 is fixedly mounted on the transoceanic vehicle by bolts; there are at least two bearings 32, with the outer ring fixedly mounted inside the first mounting through hole 310 and the inner ring fixedly sleeved on the transmission shaft 20, for rotatably mounting the transmission shaft 20 on the mounting shell 31.
[0040] The transmission gear 21 has a through mounting hole 210 in its middle and a through mounting keyhole 211 communicating with and also passing through the mounting hole 210. The transmission gear 21 is fixedly mounted on the transmission shaft 20 by a second fixing structure. The second fixing structure includes a gear retaining ring 24, a keyway 23, a flat key 22, and a gear retaining nut 25. The gear retaining ring 24 is integrally formed on the transmission shaft 20. After the transmission shaft 20 is installed into the mounting housing 31 through the first mounting through hole 310, the gear retaining ring 24 and the bearing 3 The inner ring of gear 21 abuts against the gear; a keyway 23 is formed on the drive shaft 20, one end of which extends to contact the gear retaining ring 24, and the other end of the drive shaft 20 has an installation thread 26 on its outer wall; a flat key 22 is installed inside the first installation space formed by the keyway 23 and the mounting key hole 211, fixing the drive gear 21 to the drive shaft 20 circumferentially; a gear retaining nut 25 is sleeved on the drive shaft 20 and threadedly connected to the mounting thread 26, pressing and fixing the drive gear 21 between the gear retaining nut 25 and the gear retaining ring 24.
[0041] like Figure 5 and Figure 6As shown, the blade structure 1 includes: an inner half-shell 11, an outer half-shell 12, and blades 14; wherein the inner half-shell 11 is fixedly installed at one end of the drive shaft 20 by a third fixing structure, a first inner cavity 110 is formed in the middle of the outer side of the inner half-shell 11, and at least three first blade mounting half-cavities 111 that are not connected to the first inner cavity 110 are provided around the circumference of the first inner cavity 110, and a first semi-annular limiting groove 112 is formed at the end of the first blade mounting half-cavities 111 facing the first inner cavity 110; the outer half-shell 12 is disposed opposite to the inner half-shell 11, and a second inner cavity 120 is opened in the middle of the side facing the inner half-shell 11, and at least three second blade mounting half-cavities 121 that are not connected to the second inner cavity 120 are provided around the circumference of the second inner cavity 120, and a second semi-annular limiting groove 122 is formed at the end of the second blade mounting half-cavities 121 facing the second inner cavity 120; the outer half-shell 12... The inner half-shell 11 can be fastened and fixedly connected by bolts; the first blade mounting half-cavity 111 and the second blade mounting half-cavity 121 respectively form a second mounting space opposite to each other, at which time the first semi-annular limiting groove 112 and the second semi-annular limiting groove 122 opposite to each other form a complete annular limiting groove; the first inner cavity 110 and the second inner cavity 120 opposite to each other form a third mounting space; there are at least three blades 14, each having a blade body 142 and a blade mounting flange 141 disposed at one end of the blade body 142, the blade mounting flange 141 can be installed into the first semi-annular limiting groove 112 and the second semi-annular limiting groove 122, and the part of the blade body 142 connected to the blade mounting flange 141 can be installed into the second mounting space; the middle part of the outer half-shell 12 is also provided with a loading and unloading through hole 123 that penetrates the outer half-shell 12 and communicates with the second inner cavity 120. When it is necessary to repair or replace the blade structure 1, the blade structure 1 can be removed as a whole through the loading and unloading through hole 123, which improves the disassembly efficiency.
[0042] like Figure 7As shown, the third fixing structure includes: a third fixing plane 61, a second fixing elevation 62, and a second fixing thread 64; wherein the third fixing plane 61 is disposed at one end of the transmission shaft 20, and its setting direction is parallel to the axial direction of the transmission shaft 20; the second fixing elevation 62 is disposed at one end of the transmission shaft 20, and its setting direction is perpendicular to the axial direction of the transmission shaft 20; one end of the second fixing elevation 62 is connected to one end of the third fixing plane 61, forming a right angle; an inner half-shell mounting hole 113 is provided in the middle of the inner half-shell 11. The inner side of the 3 is provided with a fourth fixing plane 63; after the inner half shell 11 is sleeved on one end of the transmission shaft 20, the fourth fixing plane 63 is in close contact with the third fixing plane 61, and the outer side of the inner half shell 11 is in close contact with the second fixing surface 62; the part of the transmission shaft 20 that passes through the inner half shell mounting hole 113 is also provided with a second fixing thread 64, and a second fixing nut 65 is threadedly connected to the second fixing thread 64, thereby pressing and fixing the inner half shell 11 between the second fixing nut 65 and the second fixing surface 62.
[0043] The system also includes a fixing cover plate 13, which is fixedly installed on the side of the outer half-shell 12 away from the inner half-shell 11. A plurality of cover plate fixing shafts 131 are fixedly provided on one side of the fixing cover plate 13, and the free ends of the cover plate fixing shafts 131 are provided with external threads. The cover plate fixing shafts 131 pass through a plurality of connecting through holes opened on the outer half-shell 12 surrounding the loading / unloading through hole 123 and are threadedly connected to connecting nuts, thereby being installed on the outer half-shell 12. The fixing cover plate 13 further enhances the stability of the connection between the inner half-shell 11 and the outer half-shell 12, ensuring the reliability and safety of the blade structure 1 in complex environments.
[0044] The propeller structure for the cross-domain vehicle in this embodiment is used as follows:
[0045] First, the device is installed on the inter-domain vehicle via mounting structure 3. Then, the power source drives the transmission gear 21, which in turn drives the transmission shaft 20 to rotate, thereby causing some components of the propeller structure 1 and the speed limiting structure 4 to rotate synchronously. When the rotational speed of the transmission shaft 20 is lower than the set speed, the elastic telescopic member 42 maintains its normal length, and the second reduction disc 43 does not contact the first reduction disc 44, thus not limiting the rotational speed of the propeller structure 1. When the rotational speed of the transmission shaft 20 is higher than the set speed, the second reduction disc 43 comes into contact with the first reduction disc 44 under inertia, and the friction between the two reduces the rotational speed of the transmission shaft 20 to protect the propeller. When the rotational speed of the transmission shaft 20 decreases to the set speed, the elastic telescopic member 42 separates the second reduction disc 43 from the first reduction disc 44 through elastic deformation and pulls it back to its original position, thus not affecting the normal navigation of the inter-domain vehicle.
[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this innovative technical solution.
Claims
1. A paddle structure for a cross-domain vehicle, characterized by, The utility model relates to a kind of propeller drive mechanism, including: Transmission shaft (20); Transmission gear (21), fixed sleeve installation is installed on the transmission shaft (20), can be driven by power, in turn drive the transmission shaft (20) rotation; Mounting structure (3), for rotatably fixedly installed the transmission shaft (20) on aircraft; Blade structure (1), is installed on the one end of the transmission shaft (20), can be driven rotation by the transmission shaft (20); Speed limiting structure (4), is installed between the other end of the transmission shaft (20) and the mounting structure (3), for limiting the rotational speed of the blade structure under set condition.
2. The paddle structure for a cross-domain vehicle of claim 1, wherein, The speed limiting structure (4) includes: First deceleration disc (44), fixed on the end face of the mounting structure (3) towards the other end of the transmission shaft (20), with first disc through-hole (440) in the middle, for the transmission shaft (20) rotatably passes through; Second deceleration disc (43), sleeve installation is installed on the transmission shaft (20), one end is opposite to the first deceleration disc (44); Elastic telescopic member (42), one end is fixedly connected with the other end of the transmission shaft (20), the other end is fixedly connected with the other end of the second deceleration disc (43); When the rotational speed of the transmission shaft (20) is lower than set rotational speed, the second deceleration disc (43) does not contact with the first deceleration disc (44), and the rotational speed of the blade structure (1) is not limited; When the rotational speed of the transmission shaft (20) is higher than set rotational speed, the second deceleration disc (43) moves to contact and rub with the first deceleration disc (44) under the action of inertia, and the rotational speed of the blade structure (1) is limited.
3. The paddle structure for a cross-domain vehicle of claim 2, wherein: First deceleration disc (44) is uniformly provided with first wave-shaped protrusion (441) on the disc face towards the second deceleration disc (43);Second deceleration disc (43) is uniformly provided with second wave-shaped protrusion (431) on the disc face towards the first deceleration disc (44);The first wave-shaped protrusion (441) and the second wave-shaped protrusion (431) are matched.
4. The paddle structure for a cross-domain vehicle of claim 2, wherein: It further includes shock disc (45), which is fixedly arranged on the end face of the mounting structure (3) towards the other end of the transmission shaft (20), and the first deceleration disc (44) is fixedly installed on the shock disc (45).
5. The paddle structure for a cross-domain vehicle of claim 2, wherein: The other end of the elastic telescopic member (42) is fixedly connected to the other end of the transmission shaft (20) through first fixed structure; The first fixed structure includes: First fixed plane (51), is arranged on the other end of the transmission shaft (20), and the arrangement direction is parallel to the axial direction of the transmission shaft (20); First fixed vertical surface (52), is arranged on the other end of the transmission shaft (20), and the arrangement direction is perpendicular to the axial direction of the transmission shaft (20);One end of the first fixed vertical surface (52) is connected with one end of the first fixed plane (51), and forms a right angle. A fixed end cover (41) is provided with an end cover mounting hole (410) in the middle, and the inner side of the end cover mounting hole (410) is provided with a second fixed plane (411); after the fixed end cover (41) is sleeved on the other end of the transmission shaft (20), the second fixed plane (411) is in contact with the first fixed plane (51), and the inner side of the fixed end cover (41) is in contact with the first fixed vertical plane (52); The part of the transmission shaft (20) penetrating out of the end cover mounting hole (410) is also provided with a first fixed thread (53), and a first fixed nut (54) is threadedly connected on the first fixed thread (53), so that the fixed end cover (41) is pressed and fixed between the first fixed nut (54) and the first fixed vertical plane (52).
6. The paddle structure for a cross-domain vehicle of claim 1, wherein, The mounting structure (3) comprises: An installation shell (31) is provided with a first installation through hole (310) penetrating in the axial direction, used for penetrating the transmission shaft (20); the installation shell (31) is fixedly installed on the cross-domain aircraft through bolts; At least two bearings (32) are fixedly installed inside the first installation through hole (310), and the inner ring is fixedly sleeved on the transmission shaft (20), used for rotatably installing the transmission shaft (20) on the installation shell (31).
7. The paddle structure for a cross-domain vehicle of claim 6, wherein: The middle part of the transmission gear (21) is provided with an installation circular hole (210), and an installation key hole (211) which is in communication with the installation circular hole (210) and is also provided with a penetrating opening; The transmission gear (21) is fixedly sleeved and installed on the transmission shaft (20) through a second fixing structure; the second fixing structure comprises: A gear fixing ring (24) is integrally formed on the transmission shaft (20), and after the transmission shaft (20) is installed into the installation shell (31) through the first installation through hole (310), the gear fixing ring (24) abuts against the inner ring of the bearing (32); A key groove (23) is provided on the transmission shaft (20), one end of which extends to contact the gear fixing ring (24), and the other end of the transmission shaft (20) is provided with an installation thread (26) on the outer wall; A flat key (22) is installed inside a first installation space formed by the key groove (23) and the installation key hole (211), which circumferentially fixes the transmission gear (21) and the transmission shaft (20); A gear fixing nut (25) is sleeved on the transmission shaft (20) and is threadedly connected with the installation thread (26), which presses and fixes the transmission gear (21) between the gear fixing nut (25) and the gear fixing ring (24).
8. The paddle structure for a cross-domain vehicle of claim 1, wherein, The paddle structure (1) comprises: An inner half shell (11) is fixedly installed at one end of the transmission shaft (20) through a third fixing structure. A first inner cavity (110) is formed in the middle of the outer side of the inner half shell (11). At least three first paddle mounting half cavities (111) which are not communicated with the first inner cavity (110) are arranged around the circumference of the first inner cavity (110). An outer half shell (12) is arranged opposite to the inner half shell (11). A second inner cavity (120) is formed in the middle of the side of the outer half shell (12) which faces the inner half shell (11). At least three second paddle mounting half cavities (121) which are not communicated with the second inner cavity (120) are arranged around the circumference of the second inner cavity (120). The end of the second paddle mounting half cavity (121) which faces the second inner cavity (120) is formed with a second half annular limiting groove (122). The outer half shell (12) and the inner half shell (11) can be buckled and fixedly connected through bolts. The first paddle mounting half cavity (111) and the second paddle mounting half cavity (121) respectively form a second mounting space opposite to each other. At this time, the first half annular limiting groove (112) and the second half annular limiting groove (122) form a complete annular limiting groove opposite to each other. The first inner cavity (110) and the second inner cavity (120) form a third mounting space opposite to each other. Paddles (14) are at least three in number. Each paddle has a paddle main body (142) and a paddle mounting flange (141) arranged at one end of the paddle main body (142). The paddle mounting flange (141) can be mounted into the inside of the first half annular limiting groove (112) and the second half annular limiting groove (122). The part of the paddle main body (142) which is connected with the paddle mounting flange (141) can be mounted into the inside of the second mounting space. A loading and unloading through hole (123) which penetrates through the outer half shell (12) and is communicated with the second inner cavity (120) is further formed in the middle of the outer half shell (12).
9. The paddle structure for a cross-domain vehicle of claim 8, wherein, The third fixing structure comprises: A third fixing plane (61) is arranged at one end of the transmission shaft (20) and arranged in parallel with the axial direction of the transmission shaft (20). A second fixing vertical plane (62) is arranged at one end of the transmission shaft (20) and arranged perpendicularly to the axial direction of the transmission shaft (20). One end of the second fixing vertical plane (62) is connected with one end of the third fixing plane (61) and forms a right angle. An inner half shell mounting hole (113) is formed in the middle of the inner half shell (11). A fourth fixing plane (63) is arranged on the inner side of the inner half shell mounting hole (113). After the inner half shell (11) is sleeved on one end of the transmission shaft (20), the fourth fixing plane (63) is in contact with the third fixing plane (61), and the outer side of the inner half shell (11) is in contact with the second fixing vertical plane (62). The part of the transmission shaft (20) penetrating the inner half shell mounting hole (113) is further provided with a second fixing thread (64), and a second fixing nut (65) is threadedly connected to the second fixing thread (64), so that the inner half shell (11) is pressed and fixed between the second fixing nut (65) and the second fixing vertical surface (62).
10. The paddle structure for a cross-domain vehicle of claim 8, wherein: Further comprising a fixed cover plate (13) fixedly installed on the side of the outer half shell (12) away from the inner half shell (11); one side of the fixed cover plate (13) is fixedly provided with a plurality of cover plate fixing shafts (131), and the free ends of the cover plate fixing shafts (131) are provided with external threads; The cover plate fixing shafts (131) are threadedly connected with connecting nuts after penetrating a plurality of connecting through holes formed on the outer half shell (12) around the loading and unloading through hole (123), so as to be installed on the outer half shell (12).