Noise reduction type inner star wheel structure

Abstract

The utility model provides a noise reduction type inner star wheel structure, which relates to the technical field of mechanical transmission and comprises an inner star wheel body and a lug, a shaft hole is formed in the middle of the inner star wheel body in a penetrating manner, and a spiral flow guide rib is arranged on the end face of the inner star wheel body. According to the inner star wheel, the two sets of spiral flow guide ribs evenly distributed in the circumferential direction are arranged on the end face of the inner star wheel body, when equipment runs, the spiral flow guide ribs can guide airflow or other media to flow, noise caused by airflow turbulence or medium impact around the inner star wheel is reduced, and the inner star wheel body is of a composite damping structure design, so that the service life of the inner star wheel is prolonged. The outer high-rigidity alloy layer guarantees the structural strength of the inner star wheel so that the inner star wheel can bear large loads, the middle powder metallurgy damping layer can effectively absorb vibration energy generated during operation of the inner star wheel and reduce noise, the inner porous titanium alloy framework reduces the weight, meanwhile, the structural stability is further enhanced, and the service life of the inner star wheel is prolonged. And the noise reduction performance of the inner star wheel is obviously improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical transmission, and in particular to a noise-reducing inner star wheel structure. Background Technology

[0002] Among numerous mechanical devices, such as speed reducers, automatic sorting equipment, and industrial robot joint transmission mechanisms, the inner star wheel structure is widely used due to its unique transmission advantages. Through ingenious meshing with the central wheel and planetary gears, the inner star wheel achieves efficient power transmission and precise speed adjustment. In speed reducers, the inner star wheel can achieve a large transmission ratio within a limited space, enabling the equipment to have a strong torque output capability. In automatic sorting equipment, the stable transmission performance of the inner star wheel ensures that items can be accurately and efficiently sorted and transported.

[0003] In existing technologies, traditional internal star wheels lack airflow or medium guidance measures in their structural design. In environments with complex internal airflow, such as automated sorting equipment, the turbulent airflow impacts the wheel body when the internal star wheel rotates, not only generating additional noise but also interfering with the internal aerodynamic field of the equipment, affecting the stability of the equipment's operation. Moreover, traditional internal star wheels are mostly made of a single material, which cannot effectively cope with the vibration and impact generated during operation. Ordinary metal materials have sufficient rigidity but poor damping performance, making it difficult to absorb the vibration energy generated during operation and continuously radiating noise outwards, thus requiring improvement. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the existing technology where traditional inner star wheels lack airflow or medium guidance measures in their structural design and are mostly made of a single material, making them unable to effectively cope with the vibration and impact generated during operation. Therefore, a noise-reducing inner star wheel structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a noise-reducing inner star wheel structure, including an inner star wheel body and a protrusion, wherein a shaft hole is provided through the middle of the inner star wheel body, and a spiral guide rib is provided on the end face of the inner star wheel body.

[0006] Preferably, the inner star wheel body is a composite damping structure, which includes an outer high-stiffness alloy layer, an intermediate powder metallurgy damping layer, and an inner porous titanium alloy skeleton.

[0007] Preferably, the number of spiral guide ribs is two sets, and the spiral guide ribs are evenly distributed along the circumferential direction.

[0008] Preferably, the outer high-rigidity alloy layer, the middle powder metallurgy damping layer, and the inner porous titanium alloy skeleton are integrally formed by hot isostatic pressing.

[0009] Preferably, a mounting block is fixedly connected to the side of the protrusion, a mounting hole is provided on the side of the inner star wheel body, a mounting groove is provided on the side of the protrusion, a screw is threadedly connected to the inside of the mounting groove, and a threaded hole is provided on the side of the inner star wheel body.

[0010] Preferably, the mounting block is slidably connected to the mounting hole.

[0011] Preferably, the screw is threadedly connected to the threaded hole, and the number of mounting blocks, mounting holes and screws is four sets.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting two sets of spiral guide ribs evenly distributed along the circumference on the end face of the inner star wheel body, the spiral guide ribs can guide the flow of air or other media during equipment operation, reducing the noise around the inner star wheel caused by airflow turbulence or media impact. In addition, the inner star wheel body is designed with a composite damping structure. The outer high-rigidity alloy layer ensures the structural strength of the inner star wheel, enabling it to withstand large loads. The middle powder metallurgy damping layer can effectively absorb the vibration energy generated when the inner star wheel is running, reducing the generation of noise. The inner porous titanium alloy skeleton reduces weight while further enhancing structural stability, thereby significantly improving the noise reduction performance of the inner star wheel.

[0014] 2. In this utility model, the mounting block is slidably connected to the mounting hole on the side of the inner star wheel body, and then the screw connected by the thread in the mounting groove is fixed in cooperation with the threaded hole on the side of the inner star wheel body. This makes it convenient and quick to install and remove the protrusion and the inner star wheel body. When the protrusion is damaged, there is no need to replace the entire inner star wheel, thereby reducing the cost of using the inner star wheel and avoiding waste of resources. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of the noise-reducing inner star wheel structure proposed in this utility model is provided.

[0016] Figure 2 A cross-sectional view of the noise-reducing inner star wheel structure proposed in this utility model;

[0017] Figure 3 An exploded view of the protrusions in the noise-reducing inner star wheel structure is provided for this utility model;

[0018] Figure 4 This utility model proposes a noise-reducing inner star wheel structure. Figure 3 Enlarged view of point A in the middle.

[0019] Legend: 1. Inner star wheel body; 101. Outer high-rigidity alloy layer; 102. Middle powder metallurgy damping layer; 103. Inner porous titanium alloy skeleton; 2. Protrusion; 3. Shaft hole; 4. Spiral guide rib; 5. Mounting block; 6. Mounting hole; 7. Mounting groove; 8. Screw; 9. Threaded hole. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figures 1-4 As shown, this utility model provides a technical solution: a noise-reducing inner star wheel structure, including an inner star wheel body 1 and a protrusion 2. A shaft hole 3 is provided through the middle of the inner star wheel body 1, and a spiral guide rib 4 is provided on the end face of the inner star wheel body 1. The inner star wheel body 1 is a composite damping structure. The inner star wheel body 1 includes an outer high-rigidity alloy layer 101, a middle powder metallurgy damping layer 102, and an inner porous titanium alloy skeleton 103. There are two sets of spiral guide ribs 4, which are evenly distributed along the circumference. The outer high-rigidity alloy layer 101, the middle powder metallurgy damping layer 102, and the inner porous titanium alloy skeleton 103 are integrally formed by hot isostatic pressing.

[0023] In this embodiment, by setting two sets of spiral guide ribs 4 evenly distributed along the circumference on the end face of the inner star wheel body 1, the spiral guide ribs 4 can guide the flow of air or other media during equipment operation, reducing the noise around the inner star wheel caused by airflow turbulence or media impact. The inner star wheel body 1 is designed as a composite damping structure. The outer high-rigidity alloy layer 101 ensures the structural strength of the inner star wheel, enabling it to withstand large loads. The middle powder metallurgy damping layer 102 can effectively absorb the vibration energy generated when the inner star wheel is running, reducing noise generation. The inner porous titanium alloy skeleton 103 reduces weight while further enhancing structural stability. The three work together to significantly improve the noise reduction performance of the inner star wheel.

[0024] Example 2: Figures 1-4As shown, a mounting block 5 is fixedly connected to the side of the protrusion 2, a mounting hole 6 is opened on the side of the inner star wheel body 1, a mounting groove 7 is opened on the side of the protrusion 2, a screw 8 is threadedly connected inside the mounting groove 7, a threaded hole 9 is opened on the side of the inner star wheel body 1, the mounting block 5 is slidably connected to the mounting hole 6, and the screw 8 is threadedly connected to the threaded hole 9. There are four sets of mounting blocks 5, mounting holes 6 and screws 8.

[0025] In this embodiment, the mounting block 5 is slidably connected to the mounting hole 6 on the side of the inner star wheel body 1, and the screw 8 connected by the internal thread of the mounting groove 7 is fixed in cooperation with the threaded hole 9 on the side of the inner star wheel body 1. This makes it convenient and quick to install and remove the protrusion 2 from the inner star wheel body 1, thereby reducing the cost of using the inner star wheel. When the protrusion 2 is damaged, there is no need to replace the entire inner star wheel, thus avoiding waste of resources.

[0026] The working principle of this embodiment is as follows: When the equipment is running, the shaft hole 3 in the middle of the inner star wheel body 1 is used to connect with related components so that it can operate normally in the equipment. The two sets of spiral guide ribs 4 evenly distributed along the circumference on the end face of the inner star wheel body 1 begin to play their role. During the operation of the equipment, they guide the airflow or other media to flow in a specific direction, reducing the noise caused by airflow turbulence or media impact. At the same time, during the operation of the inner star wheel body 1, the middle powder metallurgy damping layer 102 can effectively absorb the vibration energy generated during the operation of the inner star wheel, reducing the generation of noise. If the protrusion 2 is damaged, the screw 8 can be unscrewed and the mounting block 5 can be slid out of the mounting hole 6 to remove the protrusion 2 for replacement. This is convenient and quick, and there is no need to replace the entire inner star wheel, thereby reducing the use cost of the inner star wheel and avoiding resource waste.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A noise-reducing internal star wheel structure comprising an internal star wheel body (1) and a protrusion (2), characterized in that: The middle part of the inner star wheel body (1) is provided with an axle hole (3), and the end face of the inner star wheel body (1) is provided with spiral guide ribs (4).

2. The noise reduction type inner star wheel structure according to claim 1, characterized by: The inner star wheel body (1) is of a composite damping structure, and comprises an outer high-rigidity alloy layer (101), a middle powder metallurgy damping layer (102) and an inner porous titanium alloy framework (103).

3. The noise reducing internal star wheel structure of claim 1, wherein: The spiral guide ribs (4) are two groups and are uniformly distributed in the circumferential direction.

4. The noise reducing internal star wheel structure of claim 2, wherein: The outer high-rigidity alloy layer (101), the middle powder metallurgy damping layer (102) and the inner porous titanium alloy framework (103) are integrally formed through a hot isostatic pressing process.

5. The noise reducing internal star wheel structure of claim 1, wherein: The side face of the protruding block (2) is fixedly connected with a mounting block (5), the side face of the inner star wheel body (1) is provided with a mounting hole (6), the side face of the protruding block (2) is provided with a mounting groove (7), the inside of the mounting groove (7) is threadedly connected with a screw (8), and the side face of the inner star wheel body (1) is provided with a threaded hole (9).

6. The noise reducing internal star wheel structure of claim 5, wherein: The mounting block (5) and the mounting hole (6) are in sliding connection.

7. The noise reducing internal star wheel structure of claim 5, wherein: The screw (8) and the threaded hole (9) are in threaded connection, and the mounting block (5), the mounting hole (6) and the screw (8) are four groups.

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