Propeller hub

Abstract

The utility model discloses a propeller hub, which belongs to the field of propellers, is used for solving the problem of insufficient structural strength of the existing propeller hub, and comprises a central part, a connecting part and a reinforcing part, the integrally-formed center part is used for being connected with a driving mechanism, and the integrally-formed driving mechanism is configured to drive the integrally-formed propeller hub to rotate; the integrally-formed connecting part is used for connecting the blades, the integrally-formed connecting part and the periphery of the central part are integrally formed, and an included angle is formed between the integrally-formed connecting part and the central part; the integrally-formed reinforcing part is integrally formed in the included angle area between the integrally-formed center part and the connecting part, the integrally-formed reinforcing part is provided with an arc-shaped protruding part protruding in the opening direction of the integrally-formed included angle, and the integrally-formed arc-shaped protruding part is in transition connection with the adjacent integrally-formed connecting part through a smooth arc surface. According to the propeller hub, the structural strength between the center part and the connecting parts of the propeller hub can be improved through the reinforcing parts, and the risk of cracking between the center part and the connecting parts and the risk of cracking between the adjacent connecting parts are reduced.

Description

Technical Field

[0001] The utility model relates to the field of propellers, in particular to a propeller hub. Background Art

[0002] Traditional propeller hub designs typically use metal as the primary structural material. These hubs primarily consist of a hub center and connecting sections to the blades. A bend typically exists between the hub and connecting sections, or between adjacent connecting sections, to facilitate transition and connection. However, these bends are prone to structural problems such as cracking over long-term use, impacting the overall performance and reliability of the hub.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the Invention

[0004] (1) Technical problems solved

[0005] The utility model provides a propeller hub, which at least solves the technical problem of how to improve the structural strength of the bend between the central part and the connecting part of the propeller hub.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A propeller hub comprises: a central portion, a connecting portion and a reinforcement portion;

[0009] The central portion is used to connect a driving mechanism, and the driving mechanism is configured to drive the hub to rotate;

[0010] The connecting portion is used to connect the blades, and the connecting portion is integrally formed with the periphery of the central portion and forms an angle with the central portion;

[0011] The reinforcing portion is integrally formed in the angle region between the central portion and the connecting portion. The reinforcing portion is provided with an arc-shaped convex portion protruding toward the opening direction of the angle. The arc-shaped convex portion is connected to the adjacent connecting portion through a smooth arc surface transition.

[0012] In some embodiments, the central portion is provided with an inner end surface and an outer end surface that are oppositely disposed, and the reinforcing portion extends obliquely outward from an edge of the outer end surface toward an edge of the inner end surface along the thickness direction thereof.

[0013] In some embodiments, the hub further includes a mounting portion, which is integrally formed on the inner side of the central portion and the connecting portion and is located between the central portion and the connecting portion. The mounting portion protrudes from the inner side of the central portion and the connecting portion and is provided with a mounting hole.

[0014] In some embodiments, the mounting portion is provided with reinforcing ribs extending in the thickness direction, the reinforcing ribs protrude toward the center portion, and recesses are formed between adjacent reinforcing ribs; the mounting holes are provided on the reinforcing ribs.

[0015] In some embodiments, the central portion is provided with a mounting cavity, and the reinforcing portion and the mounting portion form a cavity wall of the mounting cavity.

[0016] In some embodiments, the connecting portion is provided with a connecting hole, the connecting holes are symmetrically arranged around a center line of the connecting portion, and the connecting portion is provided with a countersunk hole in an opening area of the connecting hole.

[0017] In some embodiments, the hub is an integrally formed part made of a polymer resin.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the propeller hub provided by the present invention has the following beneficial effects:

[0020] Effective stress dispersion: The presence of the reinforcement can effectively disperse the stress generated between the center part and the connecting part and between adjacent connecting parts during the rotation process, avoiding the occurrence of stress concentration.

[0021] Reduced cracking risk: The structural design of the reinforced part and the smooth transition of the arc-shaped convex part significantly reduce the risk of cracking due to stress concentration in the angle area, thereby improving the overall structural strength and durability of the hub.

[0022] In summary, the propeller hub of the present invention not only enhances the connection strength between the central portion and the connecting portion through the reinforcement portion, but also further improves the structural stability and safety of the entire propeller hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the propeller hub in the embodiment.

[0024] Figure 2 It is a front view of the propeller hub in the embodiment.

[0025] Figure 3 Schematic diagram of the internal structure of the hub in the embodiment.

[0026] Reference numerals:

[0027] Central portion 1, inner end surface 11, outer end surface 12, mounting cavity 13;

[0028] Connecting portion 2, connecting hole 20;

[0029] Reinforced portion 3, arc-shaped convex portion 31, smooth arc surface 32;

[0030] The mounting portion 4 , the mounting hole 41 , the reinforcing rib 42 , and the recess 43 . DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Traditional propeller hubs are usually made of metal materials, mainly including the central part of the hub and the connecting part of the blades. There is a bend between the two parts, which is prone to cracking due to insufficient structural strength and stress concentration.

[0033] In order to solve the above technical problems, this embodiment provides a hub, please refer to Figures 1 to 3 As shown, Figure 1 This is a three-dimensional diagram of the propeller hub in the embodiment. Figure 2 This is a front view of the propeller hub in the embodiment. Figure 3 Schematic diagram of the internal structure of the hub in the embodiment.

[0034] The hub of this embodiment includes a central portion 1 , a connecting portion 2 and a reinforcement portion 3 .

[0035] The central portion 1 is used to connect the driving mechanism, which is configured to drive the hub to rotate. The driving mechanism and the connection structure between the driving mechanism and the central portion 1 can use existing technology. Those skilled in the art can choose according to their needs and will not go into details here.

[0036] The connecting part 2 is used to connect the blades. The connecting part 2 is integrally formed with the periphery of the central part 1 and forms an angle with the central part 1, that is, a bend. Among them, the blade structure and the connection method with the connecting part 2 can adopt existing technology and will not be repeated here.

[0037] The reinforcement portion 3 is integrally formed in the angle region between the central portion 1 and the connecting portion 2 . The reinforcement portion 3 is provided with an arcuate protrusion 31 protruding toward the opening direction of the angle. The arcuate protrusion 31 is transitionally connected to the adjacent connecting portion 2 via a smooth arc surface 32 .

[0038] When the hub is in operation, the drive mechanism drives the central portion 1 to rotate, and the central portion 1 drives the connecting portion 2 and the blades to rotate. During this process, the reinforcement portion 3 strengthens the angle area between the central portion 1 and the connecting portion 2, and transitions to the adjacent connecting portion 2 through the arc-shaped protrusion 31 through the smooth arc surface 32. This can effectively disperse the stress between the central portion 1 and the connecting portion 2 and between adjacent connecting portions 2, reducing the risk of cracking due to stress concentration in the angle area. It can be seen that the hub of the utility model can improve the structural strength between the central portion 1 and the connecting portion 2 of the hub through the reinforcement portion 3, reducing the risk of cracking between the central portion 1 and the connecting portion 2 and between adjacent connecting portions 2.

[0039] In order to further enhance the effect of the reinforcement part 3 on structural reinforcement, the central part 1 is provided with an inner end face 11 and an outer end face 12 that are relatively arranged. The reinforcement part 3 extends obliquely outward from the edge of the outer end face 12 toward the edge of the inner end face 11 along its thickness direction. This not only optimizes the force distribution of the reinforcement part 3, enabling it to more effectively disperse and resist various stresses and impact forces from the rotation process of the blade, but also further improves the structural stability and durability of the hub.

[0040] In order to facilitate the installation of the propeller hub and further enhance the structural strength of the propeller hub, the propeller hub also includes a mounting portion 4, which is integrally formed on the inner side of the center portion 1 and the connecting portion 2 and is located between the center portion 1 and the connecting portion 2. The mounting portion 4 protrudes from the inner side of the center portion 1 and the connecting portion 2 and is provided with a mounting hole 41, which is connected to other parts of the propeller, such as the drive mechanism, by bolts. The presence of the mounting portion 4 further enhances the overall structural strength of the propeller hub, enabling it to exhibit higher stability and durability when subjected to high-speed rotation and complex loads. Therefore, the propeller hub of the present invention is not only easy to install, but also has a more robust structure, making it suitable for various high-performance propeller systems.

[0041] Furthermore, the mounting portion 4 is provided with reinforcing ribs 42 extending in the thickness direction. The reinforcing ribs 42 protrude toward the center portion 1 , and recesses 43 are formed between adjacent reinforcing ribs 42 , thereby improving the structural strength. A mounting hole 41 is provided on the reinforcing ribs 42 .

[0042] Furthermore, the central portion 1 is provided with a mounting cavity 13 , and the reinforcement portion 3 and the mounting portion 4 form a cavity wall of the mounting cavity 13 , thereby improving the structural strength of the mounting cavity 13 .

[0043] In order to facilitate the connection between the connecting part 2 and the blade, the connecting part 2 is provided with a connecting hole 20 for connecting to the blade by bolts. The connecting hole 20 is symmetrically arranged with the center line of the connecting part 2 as the center, so that the connecting part 2 is subjected to more uniform force. The connecting part 2 is provided with a countersunk hole in the opening area of the connecting hole 20. The countersunk hole facilitates the installation of the bolt and acts as a stress hole.

[0044] The structural strength of the hub can be improved by the material. For example, the hub is an integrally formed part made of polymer resin.

[0045] Exemplarily, the hub is a split structure, including a left part and a right part, and the two parts are fixedly connected.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A propeller hub, characterized in that: include: Central part, connecting part and reinforcement part; The central portion is used to connect a driving mechanism, and the driving mechanism is configured to drive the hub to rotate; The connecting portion is used to connect the blades, and the connecting portion is integrally formed with the periphery of the central portion and forms an angle with the central portion; The reinforcing portion is integrally formed in the angle region between the central portion and the connecting portion. The reinforcing portion is provided with an arc-shaped convex portion protruding toward the opening direction of the angle. The arc-shaped convex portion is connected to the adjacent connecting portion through a smooth arc surface transition.

2. The hub according to claim 1, characterized in that The central portion is provided with an inner end surface and an outer end surface which are opposite to each other. The reinforcing portion extends outwardly obliquely from the edge of the outer end surface toward the edge of the inner end surface along the thickness direction of the reinforcing portion.

3. The hub according to claim 1, characterized in that The hub also includes a mounting portion, which is integrally formed on the inner side of the central portion and the connecting portion and is located between the central portion and the connecting portion. The mounting portion protrudes from the inner side of the central portion and the connecting portion and is provided with a mounting hole.

4. The hub according to claim 3, characterized in that The mounting portion is provided with reinforcing ribs extending in the thickness direction, the reinforcing ribs protrude toward the center portion, and recesses are formed between adjacent reinforcing ribs; the mounting holes are provided on the reinforcing ribs.

5. The hub according to claim 4, characterized in that The central portion is provided with an installation cavity, and the reinforcement portion and the installation portion form a cavity wall of the installation cavity.

6. The hub according to claim 1, characterized in that The connecting portion is provided with a connecting hole, and the connecting holes are symmetrically arranged with the center line of the connecting portion as the center. The connecting portion is provided with a countersunk hole in the opening area of the connecting hole.

7. The hub according to claim 1, characterized in that The hub is an integrally formed part made of polymer resin.

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