Hollow liquid cooling motor shaft

Abstract

The utility model relates to a hollow liquid cooling motor shaft, which belongs to the technical field of motor shafts and comprises a motor shaft body, a liquid cooling channel is arranged in the motor shaft body, one end of the liquid cooling channel is provided with a connecting hole, the other end of the liquid cooling channel is provided with a connecting threaded hole, and a sealing ring groove is arranged between the connecting hole and the liquid cooling channel. According to the hollow liquid-cooled motor shaft, the liquid-cooled channel is arranged, so that heat dissipation of the hollow liquid-cooled motor shaft in the using process is faster, temperature control can be effectively guaranteed, the temperature change of the motor shaft is small, the heat expansion and cold contraction of the motor shaft are small, and the load on a bearing is also reduced, so that the effect of reducing noise is achieved, and the service life is prolonged; and the sealing performance of the liquid cooling channel is ensured.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft technology, and in particular to a hollow liquid-cooled motor shaft. Background Technology

[0002] Liquid-cooled motor shafts effectively reduce motor operating temperature by injecting insulating coolant into them. The coolant injected into the hollow liquid-cooled motor shaft directly contacts the motor shaft, and the heat is carried away through the liquid flow of the coolant, allowing the motor to operate stably in a low-temperature environment. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, this utility model provides a hollow liquid-cooled motor shaft, which has a simple structure, is easy to install, and has good sealing performance.

[0004] To achieve the above-mentioned utility model objectives, this utility model provides a hollow liquid-cooled motor shaft, including a motor shaft body, a liquid-cooling channel inside the motor shaft body, a connecting hole at one end of the liquid-cooling channel, a connecting threaded hole at the other end of the liquid-cooling channel, and a sealing ring groove between the connecting hole and the liquid-cooling channel.

[0005] Furthermore, an inner positioning groove is provided on the inner wall of the connecting hole.

[0006] Furthermore, an outer positioning groove in the axial direction is provided on the outer wall of the motor shaft body.

[0007] Furthermore, an end sealing ring groove is provided at the end of the connecting threaded hole away from the liquid cooling channel.

[0008] Furthermore, the sealing ring groove includes an arc-shaped sidewall and a tapered sidewall connected to the arc-shaped sidewall.

[0009] Furthermore, the tapered sidewall connects the sidewall of the connecting hole with the arc-shaped sidewall.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This application incorporates a liquid cooling channel to enable faster heat dissipation from the hollow liquid-cooled motor shaft during use, effectively ensuring temperature control. The smaller temperature fluctuations of the motor shaft and the reduced thermal expansion and contraction of the shaft also decrease the load on the bearings, thereby reducing noise and extending service life. The sealing performance of the liquid cooling channel is ensured by incorporating sealing ring grooves and end sealing ring grooves. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0013] Figure 2This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0014] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the CC line.

[0015] Figure 4 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0016] Figure 5 for Figure 4 A magnified structural diagram of A in the middle. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. The embodiments of this utility model are described below with reference to the accompanying drawings.

[0018] like Figure 1-5 As shown, a hollow liquid-cooled motor shaft includes a motor shaft body 1, a liquid cooling channel 3 inside the motor shaft body 1, a connecting hole 6 at one end of the liquid cooling channel 3, a connecting threaded hole 4 at the other end of the liquid cooling channel 3, and a sealing ring groove 8 between the connecting hole 6 and the liquid cooling channel 3. By setting the liquid cooling channel 3, liquid can pass through during use, which can reduce the temperature of the motor shaft body 1. By setting the connecting hole 6 and the connecting threaded hole 4, external equipment can be connected to provide liquid cooling liquid to the inside of the liquid cooling channel 3. The connecting threaded hole 4 is connected to the external equipment through threads.

[0019] The inner sidewall of the connecting hole 6 is provided with an inner positioning groove 7, which is used for positioning when connecting external equipment to the motor shaft.

[0020] The outer side wall of the motor shaft body 1 is provided with an outer positioning groove 2 in the axial direction for positioning other components installed on the motor shaft;

[0021] The end of the connecting threaded hole 4 away from the liquid cooling channel 3 is provided with an end sealing ring groove 5. When installing with external equipment, a sealing ring is placed in the end sealing ring groove 5 to meet the sealing requirements.

[0022] The sealing ring groove 8 includes an arc-shaped sidewall 9 and a conical sidewall 10 connected to the arc-shaped sidewall 9. By setting the arc-shaped sidewall 9 and the conical sidewall 10, the sealing ring groove 8 is used to install the sealing ring. The diameter of the arc-shaped sidewall 9 at its maximum point is larger than that of the connecting hole 6. After the sealing ring is installed, it is stable and reliable.

[0023] The tapered sidewall 10 connects the sidewall of the connecting hole 6 with the arc-shaped sidewall 9, which facilitates the installation of the sealing ring;

[0024] This application incorporates a liquid cooling channel to enable faster heat dissipation from the hollow liquid-cooled motor shaft during use, effectively ensuring temperature control. The smaller temperature fluctuations of the motor shaft and the reduced thermal expansion and contraction of the shaft also decrease the load on the bearings, thereby reducing noise and extending service life. The sealing performance of the liquid cooling channel is ensured by incorporating sealing ring grooves and end sealing ring grooves.

[0025] The technical solution of this utility model has been described above with reference to specific embodiments. However, it should be noted that the above description is only for explaining the solution of this utility model and should not be construed as a specific limitation on the scope of protection of the utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.

Claims

1. A hollow liquid-cooled motor shaft, characterized by, The application relates to a motor shaft body (1) internally provided with a liquid cooling channel (3), one end of the liquid cooling channel (3) being provided with a connecting hole (6), the other end of the liquid cooling channel (3) being provided with a connecting threaded hole (4), and a sealing ring groove (8) being arranged between the connecting hole (6) and the liquid cooling channel (3).

2. The hollow liquid-cooled motor shaft of claim 1, wherein, An inner positioning groove (7) is arranged on the inner side wall of the connecting hole (6).

3. The hollow liquid-cooled motor shaft of claim 1, wherein, An outer positioning groove (2) in the axial direction is arranged on the outer side wall of the motor shaft body (1).

4. The hollow liquid-cooled motor shaft of claim 1, wherein, An end sealing ring groove (5) is arranged at the end of the connecting threaded hole (4) away from the liquid cooling channel (3).

5. The hollow liquid-cooled motor shaft of claim 1, wherein, The sealing ring groove (8) comprises an arc-shaped side wall (9) and a tapered side wall (10) connected with the arc-shaped side wall (9).

6. The hollow liquid-cooled motor shaft of claim 5, wherein, The tapered side wall (10) is communicated with the side wall of the connecting hole (6) and the arc-shaped side wall (9).

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