A ring-shaped propeller with a reinforcement ring

Abstract

The utility model discloses an annular propeller with a reinforcement ring, which specifically relates to the technical field of propellers, including a hub, an annular blade is provided on the outer wall of the hub, a reinforcement ring is fixedly provided between two annular blades, and is used to improve the strength of the annular blade, and the outer walls on both sides of the hub are provided with wear-resistant reinforcement layers, and the two wear-resistant reinforcement layers include wear-resistant sheets, and a plurality of plug blocks are fixedly provided on the side close to the two wear-resistant sheets, and the outer walls on both sides of the hub are processed with a plurality of slots. The utility model can significantly improve the structural strength of the hub and the annular blade, reduce the vibration of the annular blade, and withstand high-load applications by using a reinforcement ring to reinforce the annular blade, and reduce the high-frequency noise generated during the high-speed rotation of the annular blade, and can improve the flight experience, and the combination of aramid paper honeycomb material and carbon fiber makes the propeller have good toughness and strength, and can effectively resist the impact force generated during the flight.

Description

Technical Field

[0001] The utility model relates to the technical field of propellers, in particular to an annular propeller with a reinforcement ring. Background Art

[0002] Low-altitude manned electric aircraft have made significant progress with the advancement of battery and flight control technology. With the development of electric aircraft, how to reduce noise and low-speed flight has become a key issue. Traditional blade propellers have huge noise and safety issues during use, which seriously affects the flight experience.

[0003] The annular propellers currently on the market, such as those described in U.S. Patent No. 10836466, have made some progress in reducing noise, but are mainly used in drones and have not yet been widely used in manned aircraft. This is because the existing designs are still insufficient in structural strength and stability and cannot meet the needs of high-load applications. Based on this, the utility model provides a reinforced annular propeller with high strength, light weight and low noise. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides an annular propeller with a reinforcement ring. By using the reinforcement ring to reinforce the annular blades, the structural strength of the hub and the annular blades can be significantly improved, and the high-frequency noise generated during flight can be effectively reduced, which can improve the flight experience. The reinforcement ring acts as a vibration-damping element to help absorb and reduce the vibration of the blades, reduce the fatigue stress caused by vibration, and thus extend the service life of the blades. In addition, the combination of the aramid paper honeycomb hollow material and the carbon fiber makes the propeller have good toughness, which can effectively resist the impact force and vibration generated during flight, so as to solve the problems arising from the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an annular propeller with a reinforcement ring, comprising a hub, two annular blades are fixedly provided on the top and bottom of the outer wall of the hub, and the two annular blades are fixed together at one end away from the hub, so as to improve the firmness of the rotation of the annular blades, a reinforcement ring is fixedly provided between the two annular blades above the hub and between the two annular blades below the hub, so as to improve the structural strength of the annular blades, wear-resistant reinforcement layers are provided on the outer walls on both sides of the hub, the two wear-resistant reinforcement layers both include wear-resistant sheets, a plurality of plug-ins are fixedly provided on the side close to the two wear-resistant sheets, a plurality of slots are processed on the outer walls on both sides of the hub, and a plurality of plug-ins are respectively inserted in the plurality of slots, so as to facilitate the staff to disassemble and assemble the wear-resistant sheets for dynamic balancing adjustment and replacement.

[0006] In a preferred embodiment, a hemispherical block is fixedly provided at one end of each plug away from the wear-resistant plate, each hemispherical block is made of alloy material, and the diameter of each hemispherical block is larger than the diameter of the plug, so as to improve the firmness between the wear-resistant plate and the hub.

[0007] In a preferred embodiment, the hub and each annular blade use aramid paper honeycomb hollow structure as supporting material, so that the hub and the annular blade have the advantages of light weight, high strength, high temperature resistance and corrosion resistance, thereby improving the service life of the hub and the annular blade.

[0008] In a preferred embodiment, the hub and the outer wall of each annular blade are covered with carbon fiber dressing, and the carbon fiber dressing is bonded to the annular blade by epoxy resin to improve the firmness between the carbon fiber dressing and the hub and the annular blade.

[0009] In a preferred embodiment, the laying direction of the carbon fiber dressing is consistent with the force direction of the hub and the annular blade, so as to improve the load capacity of the annular blade.

[0010] In a preferred embodiment, the edge of each annular blade is wrapped with multiple layers of carbon fiber cloth in a staggered direction. The multiple layers of carbon fiber cloth are arranged on the outer wall of the carbon fiber dressing in a staggered direction to enhance the strength of the edge of the annular blade and prevent cracking of the edge of the annular blade.

[0011] In a preferred embodiment, an annular groove is processed on the inner wall surface of the hub, and a reinforcing wear-resistant ring is fixed in the annular groove to improve the strength of the inner wall of the hub and the wear resistance of its surface, thereby extending the service life of the hub.

[0012] In a preferred embodiment, the hub is installed with an annular propeller using a reinforcing ring annular blade with an angle of 120 degrees to achieve a lower rotation speed and greater thrust.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model forms an annular propeller through annular blades and a hub, and uses a reinforcing ring to reinforce the annular blades, which can not only significantly improve the structural strength of the hub and the annular blades and withstand high-load applications, but also effectively reduce the high-frequency noise generated during flight and improve the flight experience. In addition, the combination of aramid paper honeycomb hollow material and carbon fiber makes the propeller have good toughness and can effectively resist the impact force and vibration generated during flight.

[0015] Wear-resistant sheets are used to reinforce and resist wear at the front and rear ends of the hub, and the wear-resistant sheets are installed by plug-in blocks and slots, which allows for convenient dynamic balancing and replacement. Combined with the use of reinforced wear-resistant rings, the service life of the hub and annular blades can be extended and the maintenance cycle can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the utility model at an angle of 120 degrees;

[0018] Figure 3 This is a side view of the overall structure of the utility model at an angle of 120 degrees;

[0019] Figure 4 This is a front structural diagram of the overall structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the annular blade of the utility model;

[0021] Figure 6 This is a structural diagram of the wear-resistant sheet and the hub of the utility model;

[0022] Figure 7 It is a schematic diagram of the propeller hub of the utility model.

[0023] The accompanying drawings are marked as follows: 1. hub; 2. annular blade; 3. reinforcement ring; 4. wear-resistant reinforcement layer; 5. carbon fiber dressing; 6. multi-layer carbon fiber cloth; 7. annular groove; 8. reinforced wear-resistant ring;

[0024] 401, wear-resistant sheet; 402, plug-in block; 403, slot; 404, hemispherical block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Refer to the instruction manual Figure 1-5The utility model provides an annular propeller with a reinforcement ring, comprising a hub 1, two annular blades 2 are fixedly arranged at the top and bottom of the outer wall of the hub 1, and the two annular blades 2 are fixed together at one end away from the hub 1, so as to improve the firmness of the rotation of the annular blades 2, and a reinforcement ring 3 is fixedly arranged between the two annular blades 2 above the hub 1 and between the two annular blades 2 below the hub 1, so as to improve the strength of the annular blades 2;

[0027] The hub 1 and each annular blade 2 are made of aramid paper honeycomb hollow material, so that the hub 1 and the annular blade 2 have the advantages of light weight, high strength, high temperature resistance and corrosion resistance, thereby improving the service life of the hub 1 and the annular blade 2. The outer wall of the hub 1 and each annular blade 2 is affixed with a carbon fiber dressing 5, and the carbon fiber dressing 5 is bonded to the annular blade 2 by epoxy resin, so as to improve the firmness between the carbon fiber dressing 5 and the hub 1 and the annular blade 2;

[0028] In addition, the laying direction of the carbon fiber dressing 5 is consistent with the force direction of the hub 1 and the annular blade 2, which is used to improve the load-bearing capacity of the annular blade 2. The edge of each annular blade 2 is wrapped with multiple layers of carbon fiber cloth 6. The multiple layers of carbon fiber cloth 6 are staggered on the outer wall of the carbon fiber dressing 5 in the force direction, which is used to enhance the strength of the edge of the annular blade 2 and prevent cracking at the edge of the annular blade 2.

[0029] Aramid paper honeycomb material with a thickness of not less than 5 cm is selected, and the hollow aramid paper honeycomb material is integrally formed by CNC precision cutting technology to obtain a hub 1 and annular blades 2. At the same time, a reinforcing ring 3 is added between two adjacent annular blades 2 for reinforcement. The reinforcing ring 3 can be made of carbon fiber composite material or lightweight alloy material, so that the structural strength of the hub 1 and the annular blade 2 can be significantly improved, the overall vibration of the blades during high-speed rotation can be reduced, and it can withstand high-load applications. The characteristics of the annular propeller itself can effectively reduce the high-frequency noise generated during high-speed rotation, and can improve the flight experience. In addition, carbon fiber dressings 5 ​​are provided on the outer walls of the hub 1 and the annular blade 2, so that the hub 1 and the annular blade 2 have a lighter weight, so that the overall performance and conversion efficiency of the power system of the aircraft can be improved, and multi-layer carbon fiber cloths 6 are provided on the edges of the annular blades 2, which not only enhances the strength of the edge portion of the annular blade 2, but also effectively prevents cracking that may occur during use. The combination of aramid paper honeycomb material and carbon fiber makes the propeller have good toughness and strength, and can effectively resist the impact force and vibration generated during flight.

[0030] Refer to the instruction manual Figure 1-7The outer walls on both sides of the hub 1 are provided with wear-resistant reinforcement layers 4, and the two wear-resistant reinforcement layers 4 include wear-resistant sheets 401. A plurality of plug-in blocks 402 are fixedly provided on the sides close to the two wear-resistant sheets 401. The outer walls on both sides of the hub 1 are processed with a plurality of slots 403, and the plurality of plug-in blocks 402 are respectively inserted into the plurality of slots 403, so that the staff can disassemble and install the wear-resistant sheets 401 for replacement and dynamic balancing adjustment.

[0031] A hemispherical block 404 is fixedly provided at one end of each plug block 402 away from the wear-resistant sheet 401. Each hemispherical block 404 is made of alloy material, and the diameter of each hemispherical block 404 is larger than the diameter of the plug block 402. The hemispherical block 404 is made of soft material, so it can fit tightly with the slot 403, thereby improving the firmness between the wear-resistant sheet 401 and the hub 1.

[0032] In addition, an annular groove 7 is processed on the inner wall surface of the hub 1 , and a reinforcing wear-resistant ring 8 is fixedly arranged in the annular groove 7 to improve the wear resistance of the inner wall surface of the hub 1 , thereby extending the service life of the hub 1 .

[0033] By arranging wear-resistant sheets 401 at both the front and rear ends of the hub 1 and arranging a reinforced wear-resistant ring 8 on the inner wall of the hub 1, the wear resistance of the reinforced wear-resistant ring 8 and the wear-resistant sheet 401 can be utilized to extend the service life of the hub 1. The wear-resistant sheet 401 is connected with multiple slots 403 through multiple plug blocks 402, and the firmness of the plug blocks 402 can be improved by using hemispherical blocks 404, thereby improving the connection firmness between the wear-resistant sheet 401 and the hub 1.

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An annular propeller with a reinforcement ring, comprising a hub (1), characterized in that: Two annular blades (2) are fixedly provided on the top and bottom of the outer wall of the hub (1), and the two annular blades (2) are fixed together at one end away from the hub (1), so as to improve the firmness of the rotation of the annular blades (2); A reinforcement ring (3) is fixedly provided between the two annular blades (2) located above the hub (1) and between the two annular blades (2) located below the hub (1) to increase the strength of the annular blades (2); The outer walls on both the front and rear sides of the hub (1) are provided with wear-resistant reinforcement layers (4), the two wear-resistant reinforcement layers (4) each include a wear-resistant sheet (401), a plurality of insert blocks (402) are fixedly provided on one side of the two wear-resistant sheets (401) adjacent to each other, the outer walls on both the front and rear sides of the hub (1) are processed with a plurality of slots (403), and the plurality of insert blocks (402) are respectively inserted into the plurality of slots (403).

2. The annular propeller with a reinforcement ring according to claim 1, characterized in that: A hemispherical block (404) is fixedly provided at one end of each insert block (402) away from the wear-resistant sheet (401); each hemispherical block (404) is made of an alloy material, and the diameter of each hemispherical block (404) is larger than the diameter of the insert block (402), so as to improve the firmness between the wear-resistant sheet (401) and the propeller hub (1).

3. The annular propeller with a reinforcement ring according to claim 1, characterized in that: The hub (1) and each annular blade (2) are made of an aramid paper honeycomb structure as an inner lining material.

4. The annular propeller with a reinforcement ring according to claim 1, characterized in that: The propeller hub (1) and the outer wall of each annular blade (2) are both coated with a carbon fiber dressing (5), and the carbon fiber dressing (5) is bonded to the annular blade (2) by epoxy resin, so as to improve the firmness between the carbon fiber dressing (5) and the propeller hub (1) and the annular blade (2).

5. The annular propeller with a reinforcement ring according to claim 4, characterized in that: The laying direction of the carbon fiber dressing (5) is consistent with the force direction of the hub (1) and the annular blade (2), and is used to improve the load-bearing capacity of the annular blade (2).

6. The annular propeller with a reinforcement ring according to claim 4, characterized in that: The edge of each annular blade (2) is wrapped with multiple layers of carbon fiber cloth (6) in staggered directions, and the multiple layers of carbon fiber cloth (6) are arranged on the outer wall of the carbon fiber dressing (5).

7. The annular propeller with a reinforcement ring according to claim 1, characterized in that: The inner wall surface of the hub (1) is processed with an annular groove (7), and a reinforcing wear-resistant ring (8) is fixedly provided in the annular groove (7) to improve the wear resistance of the inner wall surface of the hub (1).

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