Permanent magnet synchronous motor for mine trackless electric rubber-tyred vehicle

Abstract

This utility model relates to the field of permanent magnet synchronous motor technology, and discloses a permanent magnet synchronous motor for trackless electric rubber-tired vehicles used in mining. It includes a housing, a rotating shaft located in the middle of the housing, a second bearing externally fitted at the other end of the rotating shaft, and a first bearing fitted on one side of the middle of the rotating shaft. Both the first and second bearings are externally fixed to the housing. A stator core coil is located on the inner wall of the housing, and a junction box is fixedly connected to the outer wall of the housing. A junction box cover is located at the top of the junction box, and a rear cover is located on one side of the junction box. In this utility model, the motor, through optimized bearing configuration and junction box layout, ensures smooth rotor operation, good sealing, and safe electrical connections, while facilitating cable maintenance. The overall structure enhances protection and stability, making the motor more durable and easier to maintain in harsh mining environments, thus improving the overall vehicle's operational stability and lifespan.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet synchronous motor technology, and in particular to a permanent magnet synchronous motor for a trackless electric rubber-wheeled vehicle used in mining. Background Technology

[0002] In trackless transportation systems for mines, electric rubber-tired vehicles play an increasingly important role. Their core power source—the permanent magnet synchronous motor—directly affects vehicle efficiency and safety. This motor is not only the "heart" of the vehicle, providing strong and stable power output to ensure efficient and reliable transport of materials and personnel through complex underground tunnels, directly impacting the overall production efficiency and logistics turnover speed of the mine; but its operational stability and reliability are also crucial for driving safety. Any performance flaws or malfunctions can lead to vehicle breakdowns or even accidents, threatening the lives and property of miners. Therefore, the quality of the motor is a key indicator for evaluating the advancement and practicality of modern trackless transportation systems in mines.

[0003] However, most existing mining motor designs still have shortcomings. Their structures are relatively traditional, with limited protection levels, making it difficult to fully adapt to the complex and ever-changing harsh environment underground. This leads to susceptibility to failure under dust and moisture erosion, inconvenient maintenance, and affects the long-term stable operation and reliability of the entire vehicle.

[0004] Therefore, those skilled in the art have provided a permanent magnet synchronous motor for trackless electric rubber-tired vehicles used in mining to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies and provide a permanent magnet synchronous motor for trackless electric rubber-tired vehicles used in mining. This motor optimizes the bearing configuration and junction box layout to ensure smooth rotor operation, good sealing, and safe electrical connections. It also facilitates cable maintenance. The overall structure enhances protection and stability, making the motor more durable and easier to maintain in harsh mining environments, thereby improving the overall vehicle's operational stability and lifespan.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A permanent magnet synchronous motor for a trackless electric rubber-tired vehicle for mining includes a housing, a rotating shaft in the middle of the housing, a second bearing on the outside of the other end of the rotating shaft, a first bearing on one side of the middle of the rotating shaft, the first and second bearings being fixed to the housing, and a stator core coil on the inner wall of the housing.

[0008] A junction box is fixedly connected to the outer wall of the housing. A junction box cover is provided at the upper end of the junction box. A junction box rear cover is provided on one side of the junction box. A terminal post is provided inside the junction box. Two A2 cable entry devices are provided on one side of the junction box. Multiple A4 cable entry devices are provided on the other side of the junction box.

[0009] Through the above technical solutions, the motor optimizes the bearing configuration and junction box layout to ensure smooth rotor operation, good sealing and safe electrical connection, while facilitating cable maintenance. The overall structure enhances protection and stability, making the motor more durable and easier to maintain in harsh mining environments, thus improving the overall vehicle's operational stability and lifespan.

[0010] Furthermore, a rotating lip seal is provided at one end of the rotating shaft, and a transmission end cap is fitted over the outside of one end of the rotating shaft;

[0011] The above technical solutions effectively prevent dust, moisture and other impurities from entering the motor, significantly improving the motor's sealing performance and protection level, ensuring long-term stable operation of the motor in harsh mining environments, and extending its service life.

[0012] Furthermore, a rear cover is provided at the other end of the rotating shaft, and a motor spring washer is provided between the rear cover and the rotating shaft;

[0013] Through the above technical solution, the application of spring washers enhances the tightness and anti-loosening ability of the rear cover connection, effectively prevents loosening caused by vibration, ensures the stability and reliability of the motor structure, and reduces the maintenance requirements during operation.

[0014] Furthermore, the two ends of the outer shell are respectively connected to a front shell and a rear shell by screws, and the front shell and the rear shell are connected by two connecting plates;

[0015] The above technical solution facilitates the disassembly, repair, and assembly of the motor through screw connections. At the same time, the design of the connecting plate enhances the overall rigidity and structural strength of the motor, improving its resistance to impact and vibration.

[0016] Furthermore, a non-transmission end cap is provided in the middle of the rear shell;

[0017] Through the above technical solution, the end cover and the transmission end cover work together to completely seal both ends of the motor housing. Together with the sealing ring, they form a double protection, further improving the overall sealing and protection capabilities of the motor.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model proposes a permanent magnet synchronous motor for trackless electric rubber-tired vehicles used in mining. By optimizing the bearing configuration and setting front and rear end covers, the motor ensures smooth rotor operation and good sealing, effectively resisting the corrosion of underground dust and moisture. The reasonable layout of the junction box and its introduction device not only ensures the stability and safety of electrical connections, but also greatly facilitates the introduction and maintenance of cables. The structural design of the outer shell, front and rear shells and connecting plates enhances the overall protection strength and structural stability. These comprehensive designs enable the motor to exhibit a higher protection level, stronger durability and more convenient maintenance in harsh mining environments, thereby improving the overall vehicle's operational stability and service life. Attached Figure Description

[0020] Figure 1 This is an isometric view of a permanent magnet synchronous motor for a trackless electric rubber-tired vehicle for mining, as proposed in this utility model.

[0021] Figure 2 This is a cross-sectional view of a permanent magnet synchronous motor for a trackless electric rubber-tired vehicle for mining, as proposed in this utility model.

[0022] Figure 3 This is a cross-sectional view of the junction box of a permanent magnet synchronous motor for a trackless electric rubber-tired vehicle for mining, as proposed in this utility model.

[0023] Figure 4 This is a side view of a permanent magnet synchronous motor for a trackless electric rubber-tired vehicle for mining, as proposed in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Outer shell; 2. Transmission end cover; 3. Rotary lip seal; 4. Front shell; 5. First bearing; 6. Stator core coil; 7. Junction box; 8. Junction box cover; 9. Terminal post; 10. Junction box rear cover; 11. Rear shell; 12. Second bearing; 13. Rear cover; 14. Non-transmission end cover; 15. Motor spring washer; 16. A2 cable entry device; 17. A4 cable entry device; 18. Connecting plate; 19. Shaft. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Reference Figure 1-4This utility model provides a specific embodiment: a permanent magnet synchronous motor for a trackless electric rubber-tired vehicle for mining, including a housing 1, a rotating shaft 19 is provided in the middle of the housing 1, a second bearing 12 is sleeved on the other end of the rotating shaft 19, a first bearing 5 is sleeved on one side of the middle of the rotating shaft 19, the first bearing 5 and the second bearing 12 are both fixed on the housing 1, and a stator core coil 6 is provided on the inner wall of the housing 1.

[0028] A junction box 7 is fixedly connected to the outer wall of the outer casing 1. A junction box cover 8 is provided at the upper end of the junction box 7. A junction box rear cover 10 is provided on one side of the junction box 7. A terminal post 9 is provided inside the junction box 7. Two A2 cable entry devices 16 are provided on one side of the junction box 7. Multiple A4 cable entry devices 17 are provided on the other side of the junction box 7.

[0029] By optimizing the bearing configuration and junction box layout, the motor ensures smooth rotor operation, good sealing, and safe electrical connections, while facilitating cable maintenance. The overall structure enhances protection and stability, making the motor more durable and easier to maintain in harsh mining environments, thus improving the overall vehicle's operational stability and lifespan.

[0030] A rotating lip seal 3 is provided at one end of the rotating shaft 19, and a transmission end cover 2 is fitted over the outside of the other end of the rotating shaft 19. This effectively prevents dust, moisture, and other impurities from entering the motor, significantly improving the motor's sealing performance and protection level. This ensures the motor operates stably for a long time in harsh mining environments and extends its service life. A rear cover 13 is provided at the other end of the rotating shaft 19, and a motor spring washer 15 is provided between the rear cover 13 and the rotating shaft 19. The application of the spring washer enhances the tightness and anti-loosening ability of the connection of the rear cover 13, effectively preventing loosening caused by vibration, ensuring the stability and reliability of the motor structure, and reducing... To reduce maintenance requirements during operation, the two ends of the outer casing 1 are respectively connected to the front casing 4 and the rear casing 11 by screws. The front casing 4 and the rear casing 11 are connected by two connecting plates 18. The screw connection facilitates the disassembly, repair and assembly of the motor. At the same time, the design of the connecting plates 18 enhances the overall rigidity and structural strength of the motor and improves its resistance to impact and vibration. The middle of the rear casing 11 is provided with a non-drive end cover 14. This end cover works together with the drive end cover 2 to completely seal both ends of the motor outer casing 1. In conjunction with the sealing ring, it forms double protection and further improves the overall sealing and protection capabilities of the motor.

[0031] Working Principle: This motor, through optimized bearing configuration and front and rear end covers, not only ensures the smooth operation of the rotor but also constructs a tight sealing barrier, effectively resisting the corrosion of dust and moisture commonly found underground, providing reliable protection for the motor's core components. The rational layout of the junction box 7 and its inlet device ensures the stability and safe operation of electrical connections while greatly facilitating cable introduction, fixing, and subsequent maintenance operations, reducing maintenance difficulty. The structural design of the outer casing 1, the front and rear casings 11, and the connecting plate 18 significantly enhances the overall protection strength and structural stability of the motor, making it more able to withstand the impacts and vibrations in mining operations. These comprehensive designs enable the motor to exhibit a higher level of protection, greater durability, and easier maintenance in harsh mining environments, thereby effectively improving the overall vehicle's operational stability and service life.

[0032] The following points should be noted in this article:

[0033] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] Finally, it should be noted that the above description is only 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 specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made 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 permanent magnet synchronous motor for a trackless electric rubber-tired vehicle used in mining, comprising a housing (1), characterized in that: A rotating shaft (19) is provided in the middle of the outer shell (1). A second bearing (12) is sleeved on the other end of the rotating shaft (19). A first bearing (5) is sleeved on one side of the middle of the rotating shaft (19). The first bearing (5) and the second bearing (12) are both fixed on the outer shell (1). A stator core coil (6) is provided on the inner wall of the outer shell (1). A junction box (7) is fixedly connected to the outer wall of the outer casing (1). A junction box cover (8) is provided at the upper end of the junction box (7). A junction box rear cover (10) is provided on one side of the junction box (7). A terminal post (9) is provided inside the junction box (7). Two A2 cable entry devices (16) are provided on one side of the junction box (7). Multiple A4 cable entry devices (17) are provided on the other side of the junction box (7).

2. The permanent magnet synchronous motor for a trackless electric rubber-tired vehicle in mining as described in claim 1, characterized in that: One end of the rotating shaft (19) is provided with a rotating lip seal (3), and a transmission end cap (2) is sleeved on the outside of one end of the rotating shaft (19).

3. The permanent magnet synchronous motor for a trackless electric rubber-tired vehicle in mining, as described in claim 1, is characterized in that: The other end of the rotating shaft (19) is provided with a rear cover (13), and a motor spring washer (15) is provided between the rear cover (13) and the rotating shaft (19).

4. The permanent magnet synchronous motor for a trackless electric rubber-tired vehicle in mining as described in claim 1, characterized in that: The outer shell (1) has a front shell (4) and a rear shell (11) connected to its two ends by screws, and the front shell (4) and the rear shell (11) are connected by two connecting plates (18).

5. A permanent magnet synchronous motor for a trackless electric rubber-tired vehicle in mining, as described in claim 4, characterized in that: The rear shell (11) is provided with a non-transmission end cap (14) in the middle.

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