Efficient heat dissipation structure of motor shaft

Abstract

The utility model discloses a high-efficiency heat dissipation structure of a motor shaft, which belongs to the field of heat dissipation structures and comprises a motor shaft body, a heat dissipation mechanism is matched with the motor shaft body for use, a plurality of heat pipes are inserted in the motor shaft body, and according to the material structural characteristics of the heat pipes, after heat is generated in the motor shaft body during operation, the heat dissipation mechanism can dissipate heat in the motor shaft body. The heat pipe absorbs heat through one end and then guides the heat to the other end, at the moment, the heat conduction end of the heat pipe is sleeved with the spiral heat dissipation fins, and therefore according to the material structural characteristics of the spiral heat dissipation fins, the heat conducted out by the heat pipe can be rapidly dissipated out through the spiral heat dissipation fins; and the cooling fan is mounted at the other end of the spiral cooling fin, so that the heat dissipated by the spiral cooling fin can be accelerated to be discharged from the motor shaft body when the cooling fan runs, and the purpose of improving the heat conduction effect and the heat dissipation effect when the motor shaft body is used is achieved.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation structures, and in particular to a high-efficiency heat dissipation structure for a motor shaft. Background Technology

[0002] A motor shaft is a rotating component that connects a motor and a load. It serves as the medium for the motor's power output and typically extends from the motor and its housing, appearing cylindrical. Motor shafts are primarily made of high-strength alloy steel, stainless steel, or other special materials, possessing excellent wear resistance, corrosion resistance, and high strength. Their main function is to transmit the torque generated by the motor to the load, driving its rotation. In a motor system, they play a crucial role in rotation, torque transmission, and supporting rotating components. The quality and precision of the motor shaft directly affect the motor's performance and lifespan.

[0003] In existing technologies, motor shafts require heat dissipation because during motor operation, electrical energy is converted into mechanical energy, but some of this electrical energy is also converted into heat energy, causing the temperature of the motor shaft and other components to rise. If the motor shaft temperature is too high, it can lead to the degradation and failure of lubricating grease, deformation of the inner and outer rings of bearings and cages, thereby affecting the performance and lifespan of the motor, and even causing safety issues. Therefore, heat dissipation is necessary to reduce the temperature of the motor shaft and the entire motor to ensure the safe and stable operation of the motor.

[0004] However, current motor shafts have poor heat dissipation performance, mostly relying on natural heat dissipation or heat dissipation by installing heat sink fins on the outside of the motor shaft. This results in poor heat conduction and heat dissipation during use, and low heat conduction and heat dissipation efficiency. Consequently, the motor shaft is prone to damage after prolonged use, reducing its service life. Utility Model Content

[0005] The main objective of this invention is to provide a high-efficiency heat dissipation structure for motor shafts, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A high-efficiency heat dissipation structure for a motor shaft includes a motor shaft body. The motor shaft body has an internal heat dissipation mechanism comprising heat pipes, a positioning plate, spiral heat dissipation fins, and a cooling fan. Several heat pipes are fixedly connected inside the motor shaft body. The positioning plate is fitted onto the outside of the heat pipe inlet end through a sleeve hole on its side wall. Several spiral heat dissipation fins are also fixedly connected to the other side wall of the positioning plate, and the spiral heat dissipation fins are fitted together with the heat pipes through perforations on the side wall. The positioning plate and the cooling fan are also fitted together with a mounting guide rod inside the motor shaft body through mounting guide holes and mounting holes on the side wall, respectively, and are fixedly connected to the mounting guide rod with nuts.

[0008] Preferably, a heat dissipation groove is provided on the right end wall of the motor shaft body, and a plurality of heat dissipation cavities are provided in a ring array on the bottom surface of the heat dissipation groove.

[0009] Preferably, the bottom surface of the heat dissipation groove is further provided with a number of mounting guide rods fixedly installed in a ring array, and a threaded short rod is fixedly installed at the right end of the mounting guide rod.

[0010] Preferably, the heat pipe is inserted and installed inside the heat dissipation cavity.

[0011] Preferably, the side wall of the positioning disk has a mounting guide hole corresponding to the mounting guide rod, and the positioning disk is fitted onto the mounting guide rod through the mounting guide hole. The side wall of the positioning disk also has a sleeve hole corresponding to the heat pipe, and the positioning disk is fitted onto the outside of the heat-conducting end of the heat pipe through the sleeve hole. Several spiral heat dissipation fins corresponding to the heat pipe are fixedly installed on the right side wall of the positioning disk, and the side wall of the spiral heat dissipation fins has a through hole, and the fins are fitted onto the outside of the heat-conducting end of the heat pipe through the through hole.

[0012] Preferably, the cooling fan has mounting holes on its left and right side walls corresponding to the mounting guide rods, and the mounting guide rods are inserted into the mounting holes. The nut is threadedly connected to the threaded short rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, the heat dissipation mechanism, in conjunction with the motor shaft body, utilizes several heat pipes inserted within the motor shaft body. Based on the material and structural characteristics of these heat pipes, when the motor shaft body generates heat during operation, the heat pipes absorb the heat at one end and guide it to the other. At this point, because spiral heat dissipation fins are fitted onto the heat-conducting end of the heat pipes, the heat dissipated by the heat pipes can be quickly dissipated through the spiral heat dissipation fins, according to their material and structural characteristics. Furthermore, because a cooling fan is installed at the other end of the spiral heat dissipation fins, the heat dissipated through the spiral heat dissipation fins can be accelerated out of the motor shaft body during operation. This improves the heat conduction and dissipation effects of the motor shaft body during use, preventing damage and unusability due to overheating, and ultimately extending the service life of the motor shaft body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the heat dissipation groove of this utility model;

[0018] Figure 4 This is a structurally disassembled schematic diagram of the heat dissipation mechanism of this utility model;

[0019] Figure 5 This is a left-side view of the spiral heat dissipation fins of this utility model.

[0020] In the diagram: 1. Motor shaft body; 2. Heat dissipation mechanism; 3. Heat dissipation groove; 4. Heat dissipation cavity; 5. Mounting guide rod; 6. Threaded short rod; 7. Heat pipe; 8. Positioning plate; 9. Mounting guide hole; 10. Sleeve hole; 11. Spiral heat dissipation fins; 12. Through hole; 13. Cooling fan; 14. Mounting hole; 15. Nut. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 - Figure 5As shown, a high-efficiency heat dissipation structure for a motor shaft includes a motor shaft body 1 and a heat dissipation mechanism 2 including heat pipes 7, a positioning disk 8, spiral heat dissipation fins 11, and a cooling fan 13. Several heat pipes 7 are fixedly connected inside the motor shaft body 1, and the positioning disk 8 is sleeved on the outside of the inlet end of the heat pipes 7 through a sleeve hole 10 on the side wall. Several spiral heat dissipation fins 11 are also fixedly connected to the other side wall of the positioning disk 8, and the spiral heat dissipation fins 11 are sleeved together with the heat pipes 7 through a through hole 12 on the side wall. The positioning disk 8 and the cooling fan 13 are also sleeved together with the mounting guide rod 5 inside the motor shaft body 1 through mounting guide holes 9 and mounting holes 14 on the side wall, respectively, and are fixedly connected to the mounting guide rod 5 with nuts 15.

[0023] like Figure 3 As shown, a heat dissipation groove 3 is provided on the right end wall of the motor shaft body 1. The heat dissipation groove 3 is used to cooperate with the installation and placement of the spiral heat dissipation fins 11. Furthermore, several heat dissipation cavities 4 are provided in a ring array on the bottom surface of the heat dissipation groove 3. The heat dissipation cavities 4 are used to cooperate with the disassembly and assembly of the heat pipe 7.

[0024] like Figure 3 As shown, several mounting guide rods 5 are fixedly installed in a ring array on the bottom surface of the heat dissipation groove 3. The mounting guide rods 5 are used to position the positioning plate 8 and the cooling fan 13. A threaded short rod 6 is fixedly installed on the right end of the mounting guide rod 5. The threaded short rod 6 is used to cooperate with the nut 15 to limit the heat dissipation mechanism 2 to be installed inside the motor shaft body 1.

[0025] like Figure 4 As shown, the heat pipe 7 is inserted into the heat dissipation cavity 4. After the heat pipe 7 is inserted into the heat dissipation cavity 4, according to the material and structural characteristics of the heat pipe 7, the heat generated by the motor shaft body 1 during operation can be discharged from the inlet end through the heat pipe 7.

[0026] like Figure 4 and Figure 5As shown, the side wall of the positioning disk 8 is provided with a mounting guide hole 9 corresponding to the mounting guide rod 5, and the positioning disk 8 is fitted onto the mounting guide rod 5 through the mounting guide hole 9. The side wall of the positioning disk 8 is also provided with a sleeve hole 10 corresponding to the heat pipe 7, and the positioning disk 8 is fitted onto the outside of the heat-conducting end of the heat pipe 7 through the sleeve hole 10. Several spiral heat dissipation fins 11 corresponding to the heat pipe 7 are fixedly installed on the right side wall of the positioning disk 8, and the side wall of the spiral heat dissipation fins 11 is provided with a through hole 12, and the positioning disk 8 is fitted onto the outside of the heat-conducting end of the heat pipe 7 through the through hole 12. The positioning disk 8 is fitted onto the mounting guide rod 5 through the mounting guide hole 9, and the heat pipe 7 is inserted into the through hole 12 on the spiral heat dissipation fin 11 after passing through the sleeve hole 10. This will position the heat-conducting end of the heat pipe 7 in the spiral heat dissipation fin 11. Thus, after the heat pipe 7 conducts heat from the heat-conducting end of the motor shaft body 1, the heat can be quickly dissipated into the heat dissipation groove 3 through the spiral heat dissipation fins 11 that are tightly attached to the outer wall.

[0027] like Figure 4 As shown, mounting holes 14 corresponding to the mounting guide rods 5 are respectively opened on the left and right side walls of the cooling fan 13, and the mounting guide rods 5 are inserted into the mounting holes 14. The nuts 15 are threaded together with the threaded short rods 6. The cooling fan 13 is fitted onto the mounting guide rods 5 through the mounting holes 14, and after the cooling fan 13 is fixed together with the mounting guide rods 5 by the nuts 15, the cooling fan 13 can accelerate the discharge of heat dissipated in the heat dissipation grooves 3 from the motor shaft body 1 during operation, and can also extract the heat between the spiral heat dissipation fins 11, thereby improving the thermal conductivity and heat dissipation performance of the motor shaft body 1 during use.

[0028] The specific operating principle of the heat dissipation mechanism 2 in conjunction with the motor shaft body 1 is as follows:

[0029] Multiple heat pipes 7 are sequentially inserted into the heat dissipation cavity 4 at the bottom of the heat dissipation groove 3. Then, the positioning plate 8 and the spiral heat dissipation fins 11 mounted on the right side wall of the positioning plate 8 are installed into the groove of the heat dissipation groove 3. During installation, the installation guide rod 5 installed in the groove of the heat dissipation groove 3 passes through the installation guide hole 9 on the side wall of the positioning plate 8, and the heat pipe 7 passes through the sleeve hole 10 on the side wall of the positioning plate 8 and is inserted into the through hole 12 on the side wall of the spiral heat dissipation fin 11, so that the spiral heat dissipation fin 11 is tightly attached to the outer wall of the heat-conducting end of the heat pipe 7. Finally, the cooling fan 13 is installed into the heat dissipation groove 3, and the installation guide rod 5 is inserted into the corresponding installation holes 14 on the left and right side walls of the cooling fan 13. The nut 15 is screwed into the threaded short rod 6 mounted on the right end of the installation guide rod 5 and threaded together. In this way, the heat dissipation mechanism 2 can be installed inside the motor shaft body 1 for use. When the motor shaft body 1 is running and generates heat, the heat pipe 7 inserted in the heat dissipation cavity 4 absorbs the heat from the motor shaft body 1 at its left end and transfers the heat to the heat-conducting end at its right end, based on its material properties. At this time, because the spiral heat dissipation fins 11 are fitted on the outer wall of the heat-conducting end of the heat pipe 7, the spiral heat dissipation fins 11 can quickly dissipate the heat absorbed by the heat pipe 7 from the heat-conducting end of the motor shaft body 1 into the heat dissipation groove 3. At this time, the cooling fan 13 will accelerate the discharge of heat from the heat dissipation groove 3 during operation and simultaneously extract and discharge the heat from the spiral heat dissipation fins 11, so that the heat will not remain in the motor shaft body 1, thereby improving the heat conduction and heat dissipation effect of the motor shaft body 1 during use, avoiding the problem of the motor shaft body 1 being damaged and unusable due to excessive temperature, and thus improving the service life of the motor shaft body 1.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency heat dissipation structure of a motor shaft, comprising a motor shaft body (1), characterized in that: The inside of the motor shaft body (1) is provided with a heat dissipation mechanism (2), and the heat dissipation mechanism (2) comprises heat pipes (7), a positioning disc (8), spiral heat dissipation fins (11) and a heat dissipation fan (13), a plurality of heat pipes (7) are fixedly connected in the inside of the motor shaft body (1), and the positioning disc (8) is sleeved outside the lead-in end of the heat pipe (7) through the sleeve hole (10) on the side wall, a plurality of spiral heat dissipation fins (11) are also fixedly connected on the other side wall of the positioning disc (8), and the spiral heat dissipation fins (11) are sleeved together with the heat pipes (7) through the perforations (12) on the side wall, the positioning disc (8) and the heat dissipation fan (13) are also sleeved together with the mounting guide rod (5) in the inside of the motor shaft body (1) through the mounting guide hole (9) and the mounting hole (14) on the side wall respectively, and are fixedly connected together with the mounting guide rod (5) through the nut (15).

2. The high-efficiency heat dissipation structure of an electric machine shaft according to claim 1, characterized in that: A heat dissipation groove (3) is formed in the right end wall of the motor shaft body (1), and a plurality of heat dissipation cavities (4) are formed in the groove bottom of the heat dissipation groove (3) in a ring array.

3. The high-efficiency heat dissipation structure of an electric machine shaft according to claim 2, characterized in that: A plurality of mounting guide rods (5) are also fixedly installed on the groove bottom of the heat dissipation groove (3) in a ring array, and threaded short rods (6) are fixedly installed on the right ends of the mounting guide rods (5).

4. The high-efficiency heat dissipation structure of an electric machine shaft according to claim 3, characterized in that: The heat pipes (7) are inserted and installed in the heat dissipation cavities (4).

5. The high-efficiency heat dissipation structure of an electric machine shaft according to claim 4, characterized in that: Mounting guide holes (9) corresponding to the mounting guide rods (5) are formed in the side wall of the positioning disc (8), the positioning disc (8) is sleeved on the mounting guide rods (5) through the mounting guide holes (9), sleeve holes (10) corresponding to the heat pipes (7) are also formed in the side wall of the positioning disc (8), the positioning disc (8) is sleeved outside the heat-conducting end of the heat pipes (7) through the sleeve holes (10), a plurality of spiral heat dissipation fins (11) corresponding to the heat pipes (7) are fixedly installed on the right side wall of the positioning disc (8), and perforations (12) are formed in the side wall of the spiral heat dissipation fins (11) and are sleeved outside the heat-conducting end of the heat pipes (7) through the perforations (12).

6. The high-efficiency heat dissipation structure of an electric machine shaft according to claim 5, characterized in that: Mounting holes (14) corresponding to the mounting guide rods (5) are formed in the left and right side walls of the heat dissipation fan (13), the mounting guide rods (5) are inserted and installed in the mounting holes (14), and the nut (15) is threadedly connected together with the threaded short rod (6).

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