High-speed train traction motor end cover

Abstract

The utility model discloses a high-speed train traction motor end cover, and relates to the technical field of traction motors, in particular to a high-speed train traction motor end cover, which is mounted on a high-speed train traction motor, is manufactured into an integral structure through casting or machining, and comprises a ring body part and an end plate part, the tip of the end plate part faces the side where the motor rotor is located; a shaft hole is formed in the middle axis of the end plate part; the end plate part is arranged to be trumpet-shaped, the wall of the end plate part is provided with a plurality of heat dissipation holes, heat generated in the motor is discharged through the heat dissipation holes, the wall of the end plate part of the end cover is obliquely arranged to be trumpet-shaped, and hot air flows along the inclined wall of the end plate part and is discharged through the heat dissipation holes, so that emission of the heat can be effectively accelerated; therefore, the heat dissipation effect of the motor is improved. Compared with the prior art, the high-speed train traction motor end cover is manufactured into an integrated structure through casting or machining, and is simple in overall structure and good in heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of traction motors, in particular to an end cover of a traction motor for a high-speed train. Background Art

[0002] High-speed train traction motors are electric motors specifically designed for high-speed trains. They are core components of the train's powertrain, responsible for converting electrical energy into mechanical energy, thereby providing the train's required traction. To protect the motor, an end cover is required. This prevents damage from external forces and also protects against dust and moisture. Motors heat up over extended periods of operation, significantly shortening the lifespan of their internal components. Currently, most manufacturers provide cooling holes in the end covers. However, these holes are generally large, allowing dust and other debris to easily enter the motor, shortening its lifespan.

[0003] In a published Chinese patent application, publication number CN216414028U, title: Motor End Cover, this prior art ensures effective heat dissipation by providing multiple heat dissipation holes, which does not affect the normal operation of the motor. At the same time, a double-layer dust screen is installed within the heat dissipation holes to prevent dust and debris from entering the motor, ensuring safe use and extending the service life of the motor. Although this prior art can solve the above-mentioned problems, it has certain limitations in its specific implementation. This prior art has a complex overall structure, relatively limited heat dissipation, and weak dustproofing. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a high-speed train traction motor end cover, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-speed train traction motor end cover, which is installed on the high-speed train traction motor, and the end cover is made into an integrated structure by casting or machining. The end cover includes a ring body and an end plate. The end plate is trumpet-shaped, and the tip of the end plate is facing the side where the motor rotor is located. An axial hole is opened at the middle axis of the end plate. The outer circumferential edge of the end plate is fixedly connected to the inner circumferential edge of one end of the ring body. A plurality of heat dissipation holes distributed around the axial hole are opened on the wall of the end plate; a plurality of protective parts are provided on the end plate to prevent external dust and the like from entering the internal part of the motor through the heat dissipation holes.

[0008] Optionally, a plurality of mounting ears are fixedly connected to the outer side wall of the ring body.

[0009] Optionally, each protective member is located at each heat dissipation hole, and the protective member includes a baffle, a connecting rod, and two fixed seats. The fixed seat is fixedly connected to the end plate, and the two fixed seats are located in the heat dissipation holes of the end plate. The middle part of the connecting rod passes through one end of the baffle and the two are rotatably connected. The two ends of the connecting rod are fixedly connected to the two fixed seats, and a torsion spring is provided on the connecting rod.

[0010] Optionally, the baffle is provided with a plurality of ventilation holes.

[0011] (3) Beneficial effects

[0012] The utility model provides a high-speed train traction motor end cover, which has the following beneficial effects:

[0013] This high-speed train traction motor end cover features a trumpet-shaped end plate with multiple heat dissipation holes formed in the end plate wall. Heat generated within the motor is discharged through each of these holes. The trumpet-shaped, inclined end plate wall allows hot air to flow along the inclined end plate wall and be discharged through the heat dissipation holes, effectively accelerating heat dissipation and improving the motor's heat dissipation. Protective elements are provided at the heat dissipation holes in the end plate to prevent dust and other particles from entering the motor through the holes. This high-speed train traction motor end cover is a one-piece structure, manufactured through casting or machining. Compared to existing technologies, it offers a simpler overall structure, improved heat dissipation, and effective dust protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the middle ring body of the end cover of the traction motor of a high-speed train of the present invention (from the right side);

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the middle ring body of the end cover of the traction motor of a high-speed train of the present invention (from the left side);

[0017] Figure 3 This is a schematic cross-sectional view of the middle end plate portion of the end cover of the traction motor of a high-speed train according to the present invention;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the end cover of the traction motor of a high-speed train according to the present utility model;

[0019] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0020] In the figure: 1. Ring body; 2. End plate; 3. Axial hole; 4. Heat dissipation hole; 5. Mounting ear; 6. Fixing seat; 7. Connecting rod; 8. Baffle. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indications or implications.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Obviously, the embodiments described are only some of the embodiments of this utility model, and not all of them.

[0023] See also Figures 1 to 5 The utility model provides a technical solution: an end cover of a high-speed train traction motor, which is installed on the traction motor of a high-speed train. The end cover is made into an integrated structure by casting or machining. The end cover includes a ring body 1 and an end plate 2. The end plate 2 is trumpet-shaped, and the tip of the end plate 2 faces the side where the motor rotor is located. An axial hole 3 is opened at the middle axis of the end plate 2. The outer circumferential edge of the end plate 2 is fixedly connected to the inner circumferential edge of one end of the ring body 1 (referring to the two parts being an integrated structure), and a plurality of heat dissipation holes 4 distributed around the axial hole 3 are opened on the wall of the end plate 2.

[0024] The end cover is made into an integrated structure by casting or machining. Casting refers to pouring molten metal into a mold and forming the desired shape after cooling. Machining refers to cutting and shaping metal using machine tools such as lathes, milling machines, drilling machines, etc. The axial hole 3 of the end plate 2 is used to pass the motor shaft, and the motor shaft passes through the axial hole 3 of the end cover. The various heat dissipation holes 4 of the end plate 2 are used to dissipate heat. By setting the end plate 2 into a trumpet shape and opening a plurality of heat dissipation holes 4 on the wall of the end plate 2, after the end cover is installed on the motor, the heat generated inside the motor is discharged through the various heat dissipation holes 4. The wall of the end plate 2 of the end cover is tilted in a trumpet shape, and the hot air flows along the inclined wall of the end plate 2 and is discharged through the heat dissipation holes 4, which can effectively accelerate the release of heat, thereby improving the heat dissipation effect of the motor.

[0025] The end plate portion 2 is provided with a plurality of protective components for preventing external dust and the like from entering the interior of the motor through the heat dissipation holes 4 .

[0026] The protective member is used to prevent external dust and the like from entering the interior of the motor through the heat dissipation holes 4 .

[0027] Specifically, a plurality of mounting ears 5 are fixedly connected to the outer side wall of the ring body 1 .

[0028] The end cover is mounted on one end of the motor housing via the mounting ear 5 , and the motor shaft is mounted into the shaft hole 3 via the bearing.

[0029] More specifically, each protective member is located at each heat dissipation hole 4 and includes a baffle 8, a connecting rod 7, and two fixing seats 6. The fixing seats 6 are fixedly connected to the end plate 2 and are located within the heat dissipation holes 4 of the end plate 2. The middle portion of the connecting rod 7 passes through one end of the baffle 8 and the two are rotatably connected. The two ends of the connecting rod 7 are respectively fixedly connected to the two fixing seats 6. The connecting rod 7 is provided with a torsion spring. The baffle 8 is provided with numerous ventilation holes.

[0030] Among them, the torsion spring makes the baffle 8 always fit with the end plate part 2, so that the baffle 8 covers the heat dissipation hole 4, thereby preventing foreign debris or dust from entering the motor through the heat dissipation hole 4 when the train is running, causing accidental damage to the motor.

[0031] When the train is running, the motor starts, and the motor shaft drives the fan blades to rotate. The airflow generated by the airflow pushes the baffle 8 to overcome the elastic force of the torsion spring, causing the baffle 8 to rotate toward the middle, thereby opening the heat dissipation holes 4 and allowing the heat inside the motor to be discharged in a timely manner. When the motor stops working, the motor blades stop rotating, and the torsion spring resumes, which drives the baffle 8 to flip over, so that the baffle 8 covers the heat dissipation holes 4 again, preventing debris from entering the motor. At the same time, the air vents on the baffle 8 can dissipate the residual heat inside the motor, so that the motor maintains a good heat dissipation state.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. High-speed train traction motor end cover, which is installed on the high-speed train traction motor, is characterized by: The end cover is made into an integral structure by casting or machining, and comprises an annular body portion (1) and an end plate portion (2). The end plate portion (2) is trumpet-shaped, with the tip of the end plate portion (2) facing the side where the motor rotor is located. An axial hole (3) is provided at the middle axis of the end plate portion (2). The outer circumferential edge of the end plate portion (2) is fixedly connected to the inner circumferential edge of one end of the annular body portion (1). A plurality of heat dissipation holes (4) arranged around the axial hole (3) are provided on the wall of the end plate portion (2). A plurality of protective parts are provided on the end plate portion (2) for preventing external dust from entering the interior of the motor through the heat dissipation holes (4).

2. The high-speed train traction motor end cover according to claim 1, characterized in that: A plurality of mounting ears (5) are fixedly connected to the outer side wall of the ring body (1).

3. The high-speed train traction motor end cover according to claim 1, characterized in that: Each protective member is located at each heat dissipation hole (4), and the protective member includes a baffle (8), a connecting rod (7), and two fixing seats (6). The fixing seat (6) is fixedly connected to the end plate portion (2), and the two fixing seats (6) are located in the heat dissipation hole (4) of the end plate portion (2). The middle part of the connecting rod (7) passes through one end of the baffle (8) and the two are rotatably connected. The two ends of the connecting rod (7) are fixedly connected to the two fixing seats (6), and a torsion spring is provided on the connecting rod (7).

4. The high-speed train traction motor end cover according to claim 3, characterized in that: The baffle (8) is provided with numerous ventilation holes.

Images