Traction motor end cover structure and traction motor

Abstract

The utility model provides a traction motor end cover structure and a traction motor, the traction motor end cover structure comprises an end cover body, the center of the end cover body is provided with a bearing chamber, the end cover body comprises a bottom plate and a side wall, the bottom plate is provided with an observation window, and the side wall is provided with a ventilation opening and a fixing part used for fixing the motor. The ventilating duct, the base, the observation window and the bearing chamber are integrated into an integrated structure, so that the traction motor is compact and simple in overall structure, and the structural strength of the traction motor is improved. Through combination of the base and the traction motor end cover, the installation mode of the motor is changed, the axial distance of the traction motor is reduced, the space is further saved, and the installation flexibility is improved.

Description

Technical Field

[0001] This utility model relates to the field of traction motor technology, and in particular to a traction motor end cover structure and a traction motor. Background Technology

[0002] The traction motor is the main electric motor that drives the driving wheel axles of a vehicle, used for acceleration and braking. The traction motor mainly consists of two parts: a stator and a rotor. When the stator windings are connected to three-phase alternating current, a rotating magnetic field is generated in the stator space. The rotor windings generate an induction motor and induced current in the rotating magnetic field, causing the rotor to rotate under the action of electromagnetic force.

[0003] Currently, traction motors used in driving vehicles operate under heavy loads and harsh environments, subjected not only to quasi-static loads such as electromagnetic torque and gear transmission, but also to dynamic impact loads caused by factors such as uneven track surfaces. To increase the strength of traction motors, existing traction motor end caps have thicker inner walls, resulting in greater weight and a more complex structure, thus increasing manufacturing costs. Due to the complex structure of the traction motor, air cooling is not ideal, leading to excessive temperature rise and severely affecting motor performance and lifespan. Utility Model Content

[0004] To address the problems in the prior art, this utility model provides a traction motor end cover structure and a traction motor. The purpose of this utility model is to solve the problems of weak traction motor strength and poor ventilation.

[0005] To achieve the above objectives, according to a first aspect of the present invention, a traction motor end cover structure is provided, comprising an end cover body, a bearing chamber at the center of the end cover body, a bottom plate and a side wall, an observation window on the bottom plate, a ventilation opening on the side wall, and a fixing part for fixing the motor.

[0006] Furthermore, the vent is rectangular, and its opening direction is inclined at a 60-degree angle to the top plane of the end cap. The bottom of the side wall of the vent is provided with screw holes for fixing the pressure ring.

[0007] Furthermore, the fixing part includes a first fixing part and a second fixing part, and the end faces of the first fixing part and the second fixing part are provided with screw holes for fixing the motor.

[0008] Furthermore, the inner side of the end cap body is provided with multiple strip-shaped reinforcing ribs that radiate uniformly outward from the edge of the bearing chamber.

[0009] Furthermore, the observation window is an arc trapezoid with its upper and lower bases being concentric arcs centered on the bearing chamber.

[0010] Furthermore, the outer edge of the end cap body is provided with a notch for fixing the pressure ring.

[0011] Furthermore, the traction motor end cover structure is integrally formed.

[0012] According to a second aspect of the present invention, a traction motor is provided, including a stator, a rotor and a pressure ring, and also including a traction motor end cover structure as described above, wherein the traction motor end cover structure is disposed at both ends of the traction motor.

[0013] Compared with the prior art, the traction motor end cover structure and traction motor of this utility model have the following advantages:

[0014] This utility model integrates the ventilation duct, base, observation window, and bearing housing into a single structure for the traction motor end cover. This significantly reduces the number of parts and assembly complexity, decreasing the overall size and weight of the traction motor, resulting in a compact and simple overall structure while increasing its structural strength. By combining the base with the traction motor end cover, the motor's installation method is changed, making the installation process simpler and faster. This reduces the axial distance of the traction motor, further saving space and improving installation flexibility. It provides sufficient strength and rigidity to meet the operational requirements of the traction motor. Reliable strength ensures the stability and safety of the motor under harsh working conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the traction motor end cover of this utility model;

[0016] Figure 2 This is a front view of the traction motor end cover of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the traction motor end cover of this utility model;

[0018] In the picture:

[0019] 10. End cap body; 11. Side wall; 12. Base plate; 20. Notch; 30. Bearing chamber; 40. Ventilation opening; 50. Fixing part; 51. First fixing part; 52. Second fixing part; 60. Observation window; 70. Reinforcing rib. Detailed Implementation

[0020] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0021] like Figure 1As shown, this embodiment of the utility model provides a traction motor end cover structure, including an end cover body 10 with a bearing chamber 30 at its center. The end cover body 10 includes a base plate 12 and a side wall 11. The base plate 12 has an observation window 60, and the side wall 11 has a ventilation opening 40, as well as a fixing part 50 for fixing the motor. The end cover body 10, bearing chamber 30, observation window 60, ventilation opening 40, and fixing part 50 are an integral structure. This significantly reduces the number of parts and assembly complexity, reduces the overall size and weight of the traction motor, makes the overall structure of the traction motor compact and simple, and increases the structural strength of the traction motor.

[0022] In some embodiments, the vent 40 is located on the circumferential direction of the side wall 11 of the end cover body 10, is rectangular in shape, and is inclined at a 60-degree angle to the top plane of the end cover. The bottom of the air duct side wall of the vent 40 is provided with a screw hole for fixing the pressure ring. The position and angle design of the vent 40 helps to guide airflow, so that the heat generated inside the traction motor can be discharged more efficiently, thereby improving heat dissipation efficiency.

[0023] In some embodiments, as Figure 3 As shown, the fixing part 50 of the traction motor end cover includes a first fixing part 51 and a second fixing part 52 disposed on the side wall 11, and is an integral structure with the side wall 11. The first fixing part 51 is disposed on one side of the side wall 11, and the second fixing part 52 is disposed on the other side of the side wall 11. The end faces of the first fixing part 51 and the second fixing part 52 are also provided with screw holes for fixing the motor. The fixing part 50 for fixing the motor is integrated into the traction motor end cover, saving the installation space of the motor base and meeting more complex installation conditions. At the same time, it can significantly improve the overall structural strength and rigidity of the traction motor end cover. It helps to resist the vibration and impact generated during motor operation and ensures the stable operation of the motor. In addition, the design of the screw holes also facilitates the disassembly and replacement of the motor, further improving the convenience of maintenance.

[0024] In some embodiments, as Figure 2 As shown, the bearing chamber 30 is located at the center of the end cover body 10. Since the bearing chamber 30 needs to house the bearing, the rotation of the bearing places high demands on the structural strength of both the bearing chamber 30 and the end cover body 10. Therefore, eight strip-shaped reinforcing ribs are provided on the inner side of the end cover body 10, radiating evenly outward from the edge of the bearing chamber 30. This improves the connection strength between the bearing chamber 30 and the end cover body 10. Simultaneously, because the reinforcing ribs are distributed on the inner side of the end cover body 10, the space occupied on the outer side of the end cover is reduced.

[0025] In some embodiments, the observation window 60 is disposed on the base plate 12 of the end cover body 10, providing convenience for observing and inspecting the interior of the traction motor. The observation window 60 is an arc trapezoid, with its upper and lower bases being concentric arcs centered on the bearing chamber 30.

[0026] In some embodiments, the outer edge of the end cap body 10 is provided with a notch 20, which is connected to the pressure ring by screws and fixes the motor stator.

[0027] This utility model embodiment also provides a traction motor, including a stator, a rotor, and a pressure ring, and also includes a traction motor end cover structure provided by any technical solution of this utility model. The traction motor end cover structure is disposed at both ends of the traction motor. The outer edge of the traction motor end cover body is provided with a notch 20, which is directly fixed to the pressure ring with screws, thereby fixing the stator core. There is no need to use a traction motor housing, and the stator core is directly exposed to the external space, which can greatly increase the heat dissipation efficiency.

[0028] It is understood that the specific embodiments described herein are merely one example of the present invention, and those skilled in the art can make various changes or equivalent substitutions to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by the present invention.

Claims

1. A traction motor end cover structure, comprising an end cover body (10), wherein a bearing chamber (30) is provided at the center of the end cover body (10), characterized in that, The end cap body (10) includes a base plate (12) and a side wall (11). The base plate (12) is provided with an observation window (60), the side wall (11) is provided with a vent (40), and a fixing part (50) for fixing the motor.

2. The traction motor end cover structure according to claim 1, characterized in that, The vent (40) is rectangular, and its opening direction is inclined at a 60-degree angle to the top plane of the end cap. The bottom of the side wall of the vent (40) is provided with screw holes for fixing the pressure ring.

3. The traction motor end cover structure according to claim 1, characterized in that, The fixing part (50) includes a first fixing part (51) and a second fixing part (52), and the end faces of the first fixing part (51) and the second fixing part (52) are provided with screw holes for fixing the motor.

4. The traction motor end cover structure according to claim 1, characterized in that, The inner side of the end cap body (10) is provided with multiple strip-shaped reinforcing ribs (70) that radiate uniformly outward from the edge of the bearing chamber (30).

5. The traction motor end cover structure according to claim 1, characterized in that, The observation window (60) is a circular arc trapezoid, with its upper and lower bases being concentric arcs centered on the bearing chamber (30).

6. The traction motor end cover structure according to claim 1, characterized in that, The outer edge of the end cap body (10) is provided with a notch (20) for fixing the pressure ring.

7. The traction motor end cover structure according to any one of claims 1-6, characterized in that, The traction motor end cover structure is integrally formed.

8. A traction motor, comprising a stator, a rotor, and a pressure ring, characterized in that, It also includes the traction motor end cover structure as described in any one of claims 1-7, wherein the traction motor end cover structure is disposed at both ends of the traction motor.

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