Driving motor of outlet type subway converter cooling fan

Abstract

The utility model discloses a driving motor of an outlet type subway converter cooling fan, which is suitable for the outlet type subway converter cooling fan, the motor comprises a machine base, a front end cover, a rear end cover, a stator assembly and a rotor assembly, one end of the machine base is fixedly connected with the front end cover, the other end of the machine base is fixedly connected with the rear end cover, and the stator assembly and the rotor assembly are arranged in the machine base. The rotor assembly is provided with a rotating shaft, the front end cover and the rear end cover are respectively provided with a front end connecting lug and a rear end connecting lug and are connected through a long stud and a fastening nut, bearing chambers are arranged on the front end cover and the rear end cover, and a built-in bearing is matched with the rotating shaft. According to the design structure, the motor is convenient to disassemble, maintain and repair, and remarkable practicability and convenience are achieved.

Description

Technical Field

[0001] This utility model relates to the field of drive motor technology, specifically a drive motor for an export-type subway converter cooling fan. Background Technology

[0002] With the rapid development of urban rail transit, the safety and reliability of subways, as an important public transportation tool, have received widespread attention. The converter is one of the core devices in subway vehicles, responsible for converting the electrical energy provided by the power system into the electrical energy required to drive the motor. The converter generates a lot of heat during operation. If it is not cooled in time, it may cause the equipment to overheat, affecting its performance or even causing damage. Therefore, the role of the cooling fan is crucial. It continuously blows cool air onto the converter to keep its temperature within a safe range, ensuring the normal operation of the converter and the safety of the subway system.

[0003] In the aforementioned cooling fans, the drive motor is the main core component, primarily used to drive the fan rotation. However, in existing technologies, the drive motor housing adopts an integrated structure or is fastened with a large number of bolts. Such a structure makes it particularly inconvenient in the daily maintenance of the subway system, because subway vehicles require frequent inspection and maintenance. The complexity of motor maintenance directly affects maintenance efficiency and operating costs. Therefore, the drive motor needs to be designed to be easy to disassemble and assemble in order to facilitate rapid maintenance and repair, reduce the downtime of subway vehicles, and improve operation and maintenance efficiency. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a drive motor that is easy to maintain and repair.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is as follows: a drive motor for an export-type subway converter cooling fan, comprising a base, a front end cover, a rear end cover, a stator assembly, and a rotor assembly. The front end cover is provided at one end of the base, and the rear end cover is provided at the other end. The stator assembly is fixedly connected inside the base, and the rotor assembly is provided inside the base in conjunction with the stator assembly. The rotor assembly is provided with a rotating shaft. Multiple sets of front end connecting ears are fixedly connected to the front end cover, and a rear end connecting ear is fixedly connected to each set of front end connecting ears on the rear end cover. Both the front end connecting ears and the rear end connecting ears are provided with through holes. Both the front end cover and the rear end cover are provided with snap-fit ​​grooves that match the base. The two ends of the base are respectively fitted into the corresponding snap-fit ​​grooves. Multiple sets of long studs are provided, and each set of long studs passes through two sets of corresponding through holes. Both ends of the long studs are threaded with fastening nuts. The rotating shaft passes through the front end cover.

[0006] In the above technical solution, multiple sets of heat sinks are fixedly connected to the base.

[0007] In the above technical solution, both the front cover and the rear cover are provided with bearing chambers, and each bearing chamber is fixedly connected with a bearing, and the rotating shaft cooperates with the bearing.

[0008] In the above technical solution, a steel wave spring for motor is provided between the bearing chamber of the front cover and the bearing.

[0009] In the above technical solution, the bearing chambers and bearings of the front end cover and the rear end cover are assembled with an interference fit, and the bearings and the rotating shaft are assembled with an interference fit.

[0010] In the above technical solution, a metal gland is fixedly connected to the top of the base.

[0011] In the above technical solution, a speed sensor is fixedly connected to the rear cover in conjunction with the rotating shaft.

[0012] In the above technical solution, the bearing is a deep groove ball bearing.

[0013] In the above technical solution, the base is made of cast aluminum alloy, the front cover is made of cast aluminum alloy, and the rear cover is made of cast aluminum alloy.

[0014] The beneficial effects of this utility model are as follows: the two ends of the base are respectively fastened with a front cover and a rear cover, and the front cover and the rear cover are connected by a long stud and a fastening nut, so that the front cover and the rear cover are finally fixed on the base. This structural design makes the disassembly of the motor very convenient, and facilitates the maintenance and repair of the motor. Attached Figure Description

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

[0016] Figure 2 This is an exploded structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0018] In the diagram: 1. Base, 2. Front cover, 3. Rear cover, 4. Stator assembly, 5. Rotor assembly, 6. Shaft, 7. Bearing housing, 8. Bearing, 9. Steel wave spring, 10. Front connecting ear, 11. Rear connecting ear, 12. Through hole, 13. Snap-fit ​​groove, 14. Long stud, 15. Fastening nut, 16. Heat sink, 17. Metal gland, 18. Speed ​​sensor. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 —3, a drive motor for an export-type subway converter cooling fan, comprising a base 1, a front cover 2, a rear cover 3, a stator assembly 4, and a rotor assembly 5, wherein the front cover 2 is provided at one end of the base 1 and the rear cover 3 is provided at the other end. The stator assembly 4 is fixedly connected inside the base 1 by fastening screws. The rotor assembly 5 is provided inside the base 1 in conjunction with the stator assembly 4. The rotor assembly 5 is provided with a rotating shaft 6, which extends out of the front cover 2. Furthermore, bearing chambers 7 are provided on both the front cover 2 and the rear cover 3. Each bearing chamber 7 is fixedly connected with a bearing 8, which is a deep groove ball bearing 8. The wear of the rotating shaft 6 is reduced by the cooperation between the rotating shaft 6 and the bearing 8.

[0021] Furthermore, a steel wave spring 9 for motors is provided between the bearing chamber 7 of the front cover 2 and the bearing 8 to provide axial preload, prevent the bearing 8 from moving during operation, and improve the service life of the bearing 8. In addition, the base 1, the front cover 2, and the rear cover 3 are all made of cast aluminum alloy.

[0022] Furthermore, multiple sets of front connecting ears 10 are fixedly connected to the front cover 2, and a rear connecting ear 11 is fixedly connected to each set of front connecting ears 10 on the rear cover 3. Both the front connecting ears 10 and the rear connecting ears 11 are provided with through holes 12. Both the front cover 2 and the rear cover 3 are provided with snap-fit ​​grooves 13 for the matching base 1. The two ends of the base 1 are respectively fitted into the corresponding snap-fit ​​grooves 13. Multiple sets of long studs 14 are also provided. Each set of long studs 14 passes through two sets of corresponding through holes 12. The two ends of the long studs 14 are respectively threaded with fastening nuts 15. This structure makes the disassembly of the motor very convenient, and facilitates the maintenance and repair of the motor.

[0023] Furthermore, multiple sets of heat sinks 16 are fixedly connected to the base 1, thereby increasing the heat dissipation area and improving the heat dissipation effect.

[0024] Furthermore, the bearing chambers 7 and bearings 8 of the front cover 2 and the rear cover 3 are assembled with an interference fit, and the bearings 8 and the rotating shaft 6 are assembled with an interference fit. In addition, a metal gland 17 is fixedly connected above the base 1 to better prevent dust and water. The power cord is led out from the stator assembly 4, passes through the base 1 and the metal gland 17, and then connects to the power supply to provide power to the motor.

[0025] Furthermore, a speed sensor 18 is fixedly connected to the rear cover 3 in conjunction with the rotating shaft 6. The speed sensor 18 can detect the operating speed of the motor in real time, thereby enabling the monitoring of the working status of the cooling fan.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drive motor for a cooling fan of an export-type subway converter, comprising a base (1), a front cover (2), a rear cover (3), a stator assembly (4), and a rotor assembly (5), wherein the front cover (2) is provided at one end of the base (1), and the rear cover (3) is provided at the other end; the stator assembly (4) is fixedly connected inside the base (1); the rotor assembly (5) is provided inside the base (1) in conjunction with the stator assembly (4); and a rotating shaft (6) is provided on the rotor assembly (5), characterized in that: Multiple sets of front connecting ears (10) are fixedly connected to the front end cover (2). A rear connecting ear (11) is fixedly connected to each set of front connecting ears (10) on the rear end cover (3). Both the front connecting ears (10) and the rear connecting ears (11) are provided with through holes (12). Both the front end cover (2) and the rear end cover (3) are provided with snap-fit ​​grooves (13) to match the base (1). The two ends of the base (1) are respectively fitted into the corresponding snap-fit ​​grooves (13). Multiple sets of long studs (14) are provided. Each set of long studs (14) passes through the two sets of corresponding through holes (12). Both ends of the long studs (14) are respectively threaded with fastening nuts (15). The rotating shaft (6) passes through the front end cover (2).

2. The drive motor for an export-type subway converter cooling fan according to claim 1, characterized in that: Multiple heat sinks (16) are fixedly connected to the base (1).

3. The drive motor for an export-type subway converter cooling fan according to claim 1, characterized in that: The front cover (2) and the rear cover (3) are each provided with a bearing chamber (7), and each bearing chamber (7) is fixedly connected with a bearing (8), and the rotating shaft (6) cooperates with the bearing (8).

4. The drive motor for an export-type subway converter cooling fan according to claim 3, characterized in that: A steel wave spring (9) for motors is provided between the bearing chamber (7) of the front cover (2) and the bearing (8).

5. The drive motor for an export-type subway converter cooling fan according to claim 4, characterized in that: The bearing chambers (7) and bearings (8) of the front cover (2) and the rear cover (3) are assembled with transition fit, and the bearings (8) and the shaft (6) are assembled with interference fit.

6. The drive motor for an export-type subway converter cooling fan according to claim 1, characterized in that: A metal gland (17) is fixedly connected to the top of the base (1).

7. The drive motor for an export-type subway converter cooling fan according to claim 1, characterized in that: A speed sensor (18) is fixedly connected to the rear cover (3) in conjunction with the rotating shaft (6).

8. The drive motor for an export-type subway converter cooling fan according to claim 3, characterized in that: The bearing (8) is a deep groove ball bearing (8).

9. The drive motor for an export-type subway converter cooling fan according to claim 3, characterized in that: The base (1) is made of cast aluminum alloy, the front cover (2) is made of cast aluminum alloy, and the rear cover (3) is made of cast aluminum alloy.

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