Gear box shaft with self-heat-dissipation structure

Abstract

The utility model discloses a gear box shaft with a self-radiating structure, which belongs to the technical field of gear box shafts and comprises a gear box shaft, outer radiating fins are fixedly connected to the outer side of the gear box shaft, a radiating channel is arranged in the gear box shaft, and air holes are arranged in the gear box shaft. Meanwhile, the air holes are distributed in the gear box shaft at equal intervals; the inner wall of the gear box shaft is fixedly connected with inner heat dissipation fins, and the inner heat dissipation fins and the outer heat dissipation fins are both in a spiral shape. The inner wall of the gearbox shaft is fixedly connected with heat dissipation fins. The surface of the gear box shaft is connected with a heat conduction layer in a jetting mode, the heat conduction layer is made of aluminum oxide materials, and the surface of the heat conduction layer is connected with an electric material layer in a jetting mode. According to the gear box shaft with the self-heat-dissipation structure, heat dissipation in the gear box shaft is accelerated through the heat dissipation channels and the inner heat dissipation fins, the size precision and the surface quality of the gear box shaft are improved, and meanwhile the matching precision of the gear box shaft is improved.

Description

Technical Field

[0001] This utility model relates to the field of gearbox shaft technology, specifically a gearbox shaft with a self-heating structure. Background Technology

[0002] A gearbox shaft is a mechanical part that supports rotating components and rotates with them to transmit motion, torque, or bending moment. It is generally a metal rod, and the diameter of each section may vary. During operation, heat dissipation from the gearbox shaft is crucial for ensuring stable gearbox operation. This not only prevents the degradation of the gearbox shaft material properties due to overheating but also improves the transmission accuracy and enhances system reliability. After prolonged operation, friction generates a significant amount of heat on the surface and inside the gearbox shaft. Because heat dissipation from the inside of the gearbox shaft is slow, it can cause deformation, affecting the gearbox bearing capacity and service life.

[0003] To overcome the above-mentioned defects, the existing technology (Chinese patent application number CN202321146338.9, application date 2023-05-10) gear shaft includes a gear part and a heat sink. The heat sink includes several heat-conducting parts that pass through the gear part along its length and heat sinks connecting the two sides of the heat-conducting parts. The heat is conducted from the inside of the gear part to the heat sink through the heat-conducting parts, and then dissipated through the heat sink, which can quickly remove the heat from the inside of the gear part and accelerate the heat dissipation of the gear part. Both the gear part and the shaft part are made of low-hardenability carburized steel, specifically 20Cr alloy steel. The surface of low-hardenability carburized steel has high hardness and high wear resistance, and the core has sufficient toughness and strength, with the advantages of hard surface and tough interior. The gear part and shaft part made of it have high core strength and strong surface wear resistance, so that the gear shaft has the advantages of high strength and wear resistance, and has a longer service life.

[0004] During operation, gearbox shafts are typically equipped with sealing devices to prevent lubricant leakage and the entry of external impurities into the gearbox. As the shaft passes through the seal, there is relative movement between the two, generating friction. The seal is tightly fitted to the shaft surface to ensure a sealing effect, but this also increases frictional resistance. As the shaft continues to rotate, frictional heat accumulates. During use, the aforementioned device cannot effectively reduce the heat generated inside, leading to accelerated wear on the gearbox shaft surface. This not only affects the dimensional accuracy and surface quality of the gearbox shaft but also reduces the fitting precision of the gearbox shaft, thus lowering its reliability. Utility Model Content

[0005] The purpose of this invention is to provide a gearbox shaft with a self-heating structure to solve the problem mentioned in the background art that the heat generated inside the device cannot be effectively reduced, which leads to accelerated wear on the surface of the gearbox shaft, affecting not only the dimensional accuracy and surface quality of the gearbox shaft, but also reducing the fitting accuracy of the gearbox shaft and lowering its reliability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gearbox shaft with a self-heating structure, comprising a gearbox shaft, an outer heat dissipation fin fixedly connected to the outer side of the gearbox shaft, a heat dissipation channel opened inside the gearbox shaft, and a vent hole opened inside the gearbox shaft, with the vent hole evenly distributed inside the gearbox shaft; an inner heat dissipation fin fixedly connected to the inner wall of the gearbox shaft, and both the inner heat dissipation fin and the outer heat dissipation fin are spiral-shaped; and a heat dissipation fin is fixedly connected to the inner wall of the gearbox shaft.

[0007] The above structural design, through the setting of internal heat dissipation fins, external heat dissipation fins and heat dissipation channels, improves the self-heating effect of the device. Furthermore, the spiral-shaped internal and external heat dissipation fins not only significantly increase the contact area with air, but also more effectively transfer the heat inside the shaft.

[0008] Preferably, a heat-conducting layer is sprayed onto the surface of the gearbox shaft, and the heat-conducting layer is made of aluminum oxide.

[0009] The above structural design, by setting a heat-conducting layer of alumina material, can quickly conduct the heat generated inside the gearbox shaft to the surface of the shaft, thereby improving the overall heat dissipation efficiency and ensuring that the shaft will not overheat due to heat accumulation during operation, thus affecting its performance and lifespan.

[0010] Preferably, an electrical material layer is sprayed onto the surface of the thermally conductive layer, and the electrical material layer is a piezoelectric ceramic material.

[0011] The above structural design, by setting a piezoelectric ceramic material layer, can not only ensure the performance of the piezoelectric ceramic material layer, but also ensure the connection strength between the material layer and the heat-conducting layer, and adapt to the vibration and deformation of the shaft during operation.

[0012] Preferably, a lubricating layer is sprayed onto the surface of the electrical material layer, and the lubricating layer is made of molybdenum disulfide.

[0013] The above structural design, by setting a lubricating layer made of molybdenum disulfide, enables the shaft to maintain good lubrication performance and is not prone to failure due to wear, thereby extending the service life of the shaft and reducing the frequency of lubrication maintenance.

[0014] Preferably, an insulating layer is sprayed onto the surface of the lubricating layer, and the insulating layer is made of alumina ceramic.

[0015] The above structural design, by setting an insulating layer of alumina ceramic material, can effectively prevent current leakage, avoid safety accidents caused by the shaft being electrified, ensure the safety of operators and equipment, and extend the service life of the entire shaft structure.

[0016] Preferably, an anti-corrosion layer is sprayed onto the surface of the insulating layer, and the anti-corrosion layer is made of zinc-based alloy.

[0017] The above structural design, by setting a zinc-based alloy anti-corrosion layer, can prevent oxygen, moisture and other corrosive substances from directly contacting the shaft, thereby slowing down or preventing corrosion and providing reliable protection for the shaft.

[0018] Preferably, a wear-resistant layer is sprayed onto the surface of the anti-corrosion layer, and the wear-resistant layer is a ceramic-based composite material.

[0019] The above structural design, by setting a wear-resistant layer of ceramic-based composite material, can effectively resist abrasive wear and adhesive wear generated during device operation, greatly extending the service life of the shaft and maintaining the dimensional accuracy and surface quality of the shaft.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the gearbox shaft with a self-heating structure adopts a novel structural design, the specific details of which are as follows:

[0021] (1) The gearbox shaft with a self-heating structure accelerates the dissipation of heat inside the gearbox shaft through the heat dissipation channel and internal heat dissipation fins, which not only improves the dimensional accuracy and surface quality of the gearbox shaft, but also improves the fitting accuracy of the gearbox shaft.

[0022] Furthermore, the internal heat dissipation fins increase the contact area with the air, allowing heat to be dissipated more efficiently into the surrounding environment, ensuring stable operation of the gearbox shaft.

[0023] (2) The gearbox shaft with a self-heating structure can effectively resist abrasive wear and adhesive wear generated during the operation of the device through the wear-resistant layer of composite material, which greatly extends the service life of the shaft and maintains the dimensional accuracy and surface quality of the shaft.

[0024] Furthermore, the molybdenum disulfide lubricating layer allows the shaft to maintain good lubrication performance and is not prone to failure due to wear, thereby extending the service life of the shaft.

[0025] (3) The gearbox shaft with a self-heating structure, through the anti-corrosion layer made of zinc-based alloy, can block oxygen, moisture and other corrosive substances from directly contacting the shaft, thereby slowing down or preventing corrosion and providing reliable protection for the shaft. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the gearbox shaft and external heat dissipation fins of this utility model;

[0027] Figure 2 This is a schematic diagram of the connection structure between the gearbox shaft and the heat dissipation channel of this utility model;

[0028] Figure 3 This is a schematic diagram of the gearbox shaft and internal heat dissipation fins of this utility model;

[0029] Figure 4 This is a schematic diagram of the connection structure between the gearbox shaft and the heat sink fins of this utility model;

[0030] Figure 5 This is a schematic diagram of the connection structure between the thermally conductive layer and the electrical material layer of this utility model.

[0031] In the diagram: 1. Gearbox shaft; 2. Heat dissipation channel; 3. Outer heat dissipation fins; 4. Ventilation hole; 5. Heat dissipation fins; 6. Inner heat dissipation fins; 7. Thermal conductive layer; 8. Electrical material layer; 9. Lubricating layer; 10. Insulating layer; 11. Anti-corrosion layer; 12. Wear-resistant layer. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1: By incorporating the gearbox shaft 1, vent 4, and internal heat dissipation fins 6, the heat dissipation efficiency of the device is improved. Figures 1-2 As shown: It includes a gearbox shaft 1, with an outer heat dissipation fin 3 fixedly connected to the outside of the gearbox shaft 1, and a heat dissipation channel 2 opened inside the gearbox shaft 1. The gearbox shaft 1 also has ventilation holes 4, which are evenly distributed inside the gearbox shaft 1. An inner heat dissipation fin 6 is fixedly connected to the inner wall of the gearbox shaft 1, and both the inner heat dissipation fin 6 and the outer heat dissipation fin 3 are spiral-shaped. A heat dissipation fin 5 is fixedly connected to the inner wall of the gearbox shaft 1.

[0034] The staff installed the gearbox shaft 1 in the predetermined position inside the gearbox, and after installation, inspected the gearbox shaft 1 to ensure that it could operate stably. The internal heat dissipation fins 6, external heat dissipation fins 3, and heat dissipation channels 2 improved the self-heating effect of the device. The spiral internal heat dissipation fins 6 and external heat dissipation fins 3 not only significantly increased the contact area with the air, but also more effectively transferred the heat inside the shaft. In addition, the increased contact area with the air by the internal heat dissipation fins 6 allowed the heat to be dissipated more efficiently into the surrounding environment, ensuring the stable operation of the gearbox shaft 1.

[0035] In Example 2, unlike Example 1, the lifespan of the device is extended by using heat dissipation fins 5, heat dissipation channels 2, and a heat-conducting layer 7. Figures 3-4 As shown: A heat-conducting layer 7 is sprayed onto the surface of the gearbox shaft 1, and the heat-conducting layer 7 is made of alumina. An electrical material layer 8 is sprayed onto the surface of the heat-conducting layer 7, and the electrical material layer 8 is made of piezoelectric ceramic. A lubricating layer 9 is sprayed onto the surface of the electrical material layer 8, and the lubricating layer 9 is made of molybdenum disulfide. An insulating layer 10 is sprayed onto the surface of the lubricating layer 9, and the insulating layer 10 is made of alumina ceramic.

[0036] With the heat dissipation fins 5 and heat dissipation channels 2, as the gearbox shaft 1 rotates, the heat generated inside the gearbox shaft 1 comes into contact with the air through the heat dissipation fins 5 and heat dissipation channels 2, allowing the heat generated inside the gearbox shaft 1 to be quickly dissipated into the air, thus accelerating the heat dissipation efficiency of the device. In addition, by setting the thermally conductive layer 7 made of alumina, the heat generated inside the gearbox shaft 1 can be quickly conducted to the surface of the shaft, thereby improving the overall heat dissipation efficiency and ensuring that the shaft will not overheat due to heat accumulation during operation, thus affecting its performance and lifespan.

[0037] In Example 3, unlike Example 2, the protection of the shaft is improved by the addition of an anti-corrosion layer 11, a wear-resistant layer 12, and an insulating layer 10. Figure 5 As shown: an anti-corrosion layer 11 is sprayed onto the surface of the insulating layer 10, and the anti-corrosion layer 11 is made of zinc-based alloy. A wear-resistant layer 12 is sprayed onto the surface of the anti-corrosion layer 11, and the wear-resistant layer 12 is made of ceramic-based composite material.

[0038] By setting the zinc-based alloy anti-corrosion layer 11, oxygen, moisture and other corrosive substances can be prevented from directly contacting the shaft, thereby slowing down or preventing corrosion and providing reliable protection for the shaft. By setting the ceramic-based composite wear-resistant layer 12, abrasive wear and adhesive wear generated during device operation can be effectively resisted, greatly extending the service life of the shaft and maintaining the dimensional accuracy and surface quality of the shaft. The molybdenum disulfide lubrication layer 9 enables the shaft to maintain good lubrication performance and is not prone to failure due to wear, thereby extending the service life of the shaft.

[0039] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gearbox shaft with a self-heating structure, comprising a gearbox shaft (1), wherein an external heat dissipation fin (3) is fixedly connected to the outside of the gearbox shaft (1), and a heat dissipation channel (2) is provided inside the gearbox shaft (1), and a vent hole (4) is provided inside the gearbox shaft (1), wherein the vent holes (4) are evenly distributed inside the gearbox shaft (1); Its features are: The gearbox shaft (1) is fixedly connected to an inner heat dissipation fin (6), and both the inner heat dissipation fin (6) and the outer heat dissipation fin (3) are spiral-shaped. The gearbox shaft (1) has heat dissipation fins (5) fixedly connected to its inner wall.

2. A gearbox shaft with a self-heating structure according to claim 1, characterized in that: The gearbox shaft (1) has a heat-conducting layer (7) sprayed onto its surface, and the heat-conducting layer (7) is made of aluminum oxide.

3. A gearbox shaft with a self-heating structure according to claim 2, characterized in that: The surface of the thermal conductive layer (7) is sprayed with an electrical material layer (8), and the electrical material layer (8) is a piezoelectric ceramic material.

4. A gearbox shaft with a self-heating structure according to claim 3, characterized in that: The surface of the electrical material layer (8) is sprayed with a lubricating layer (9), and the lubricating layer (9) is made of molybdenum disulfide.

5. A gearbox shaft with a self-heating structure according to claim 4, characterized in that: The surface of the lubricating layer (9) is sprayed with an insulating layer (10), and the insulating layer (10) is made of alumina ceramic.

6. A gearbox shaft with a self-heating structure according to claim 5, characterized in that: The surface of the insulating layer (10) is sprayed with an anti-corrosion layer (11), and the anti-corrosion layer (11) is made of zinc-based alloy.

7. A gearbox shaft with a self-heating structure according to claim 6, characterized in that: The surface of the anti-corrosion layer (11) is sprayed with a wear-resistant layer (12), and the wear-resistant layer (12) is a ceramic-based composite material.

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