New energy automobile permanent magnet synchronous motor stator and rotor combination device

Abstract

The utility model discloses a new energy automobile permanent magnet synchronous motor stator and rotor assembling device, and relates to the field of motor assembling. Comprising a fixing disc used for supporting a stator, the fixing disc is supported through a base, positioning of the stator is achieved through positioning blocks on the edge of the fixing disc, a guide column is arranged in the center of the fixing disc, and an air pressure ejector pin is arranged in the center of the guide column. The upper pressure plate is connected with a lead screw sliding block device through a first connecting rod mechanism, the upper pressure plate moves up and down along an upper guide device along with the up-and-down movement of the lead screw sliding block device, the lead screw sliding block device is in driving connection with a first pneumatic device through a second connecting rod mechanism, and the pneumatic ejector pin is connected with a second pneumatic device. The stator and rotor assembly of the permanent magnet synchronous motor can be completed under the condition of ensuring the stator and rotor concentricity to the greatest extent.

Description

Technical Field

[0001] This utility model relates to the field of motor assembly, and in particular to a device for assembling the stator and rotor of a permanent magnet synchronous motor for new energy vehicles. Background Technology

[0002] In the process of assembling the stator and rotor of a permanent magnet synchronous motor, the stator must first be fixed in the appropriate position, and then the rotor must be precisely fixed in place. This step can be achieved in two main ways: using an assembly machine or a hydraulic assembly machine.

[0003] The advantage of using an assembly machine for assembly lies in its ability to eliminate magnetic forces and achieve precise positioning. However, this method places high demands on the equipment, requiring sufficient strength to withstand the magnetic forces exerted by the rotor of a high-power traction motor. Furthermore, the assembly machine consumes a significant amount of energy during operation, making it less than ideal in terms of energy conservation. In practice, assembling a single motor requires readjustment of the equipment, resulting in lengthy preparation times and low efficiency, failing to meet the demands of modern factories for high-efficiency production. The operation process is also relatively complex and cumbersome.

[0004] In contrast, while hydraulic assembly machines share similarities with traditional assembly machines in assembling stators and rotors, they place higher demands on the strength of the pneumatic clamping devices and connecting rod mechanisms. The advantage of hydraulic assembly machines lies in their ability to provide greater force to secure the rotor, but they also require consideration of equipment strength requirements and operational complexity.

[0005] In general, whether using a machine assembly line or a hydraulic assembly line, a balance must be struck between factors such as equipment strength, energy consumption, work efficiency, and operational complexity. In practice, the most suitable assembly method should be selected based on specific production needs and conditions to ensure both motor quality and production efficiency. Furthermore, with technological advancements, more advanced assembly technologies, such as automated and intelligent equipment, can be considered to improve production efficiency and reduce operational complexity. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a device for assembling the stator and rotor of a permanent magnet synchronous motor for new energy vehicles, which can complete the assembly of the stator and rotor of the permanent magnet synchronous motor while ensuring the concentricity of the stator and rotor to the greatest extent.

[0007] To achieve the above objectives, this application discloses a stator and rotor assembly device for a permanent magnet synchronous motor in a new energy vehicle, including a fixed plate for supporting the stator. The fixed plate is supported by a base and the stator is positioned by positioning blocks on the edge of the fixed plate. A guide post is provided at the center of the fixed plate, and a pneumatic ejector pin is provided at the center of the guide post. The device also includes an upper pressure plate for supporting the rotor. The upper pressure plate is connected to a lead screw and slider device through a first linkage mechanism, and the upper pressure plate moves up and down along the upper guide device as the lead screw and slider device moves up and down. The lead screw and slider device is driven by a first pneumatic device through a second linkage mechanism, and the pneumatic ejector pin is connected to a second pneumatic device.

[0008] Furthermore, a slider is provided at the bottom of the fixed plate, and the slider is connected to the crank-connecting rod mechanism.

[0009] The beneficial effects of this utility model's technical solution are:

[0010] This application employs a positioning method: a double guide column plus pneumatic ejector pin assembly, to ensure maximum concentricity of the stator and rotor. Based on electromagnetic principles, since stators and rotors are mostly symmetrical circular structures, if they are concentric, their electromagnetic attraction is zero. Thus, the stator and rotor no longer exert any attraction, allowing them to smoothly descend under their own weight during assembly. The main issue to address during stator and rotor assembly is the attraction between the stator and rotor. This can be achieved by appropriately selecting guide tolerances, choosing suitable materials, enhancing the bending resistance of the guide fixtures, reducing rotor wobble during assembly, and increasing rotor mass to ensure that gravity exceeds resistance during descent. Precise positioning through the guide device allows for successful assembly under its own weight. This device effectively achieves this. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] The components are: stator-1, fixed plate-2, base-3, positioning block-4, guide column-5, pneumatic ejector pin-6, rotor-7, upper pressure plate-8, first linkage mechanism-9, lead screw slider device-10, upper guide device-11, second linkage mechanism-12, first pneumatic device-13, second pneumatic device-14, slider-15, crank connecting rod mechanism-16. Detailed Implementation

[0014] 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.

[0015] refer to Figure 1 A stator and rotor assembly device for a permanent magnet synchronous motor in a new energy vehicle includes a fixed plate 2 for supporting the stator 1. The fixed plate 2 is supported by a base 3 and the stator 4 is positioned by positioning blocks 4 on the edge of the fixed plate 2. A guide post 5 is provided at the center of the fixed plate 2, and a pneumatic pin 6 is provided at the center of the guide post. The device also includes an upper pressure plate 8 for supporting the rotor 7. The upper pressure plate 8 is connected to a lead screw and slider device 10 through a first linkage mechanism 9, and the upper pressure plate 8 moves up and down along an upper guide device 11 as the lead screw and slider device moves up and down. The lead screw and slider device 10 is driven by a first pneumatic device 13 through a second linkage mechanism 12, and the pneumatic pin 6 is connected to a second pneumatic device 14.

[0016] In use, the stator is fixed on the fixed plate 2, which has positioning blocks 6 to ensure the stator's positioning. There is a guide post in the middle of the fixed plate, which guides the rotor when it is pressed down to a certain height. There is a pneumatic pin in the center of the guide post, which can achieve positioning at both ends and ensure the concentricity of the stator and rotor assembly to the greatest extent and avoid the influence of magnetic force. There is an upper pressure plate on the stator. The electrical control device controls the first pneumatic device to move downward through the lead screw and slider device. Using this stator and rotor assembly device, firstly, it can ensure the concentricity and alignment of the stator and rotor to the greatest extent; secondly, it can eliminate the extra load on the mechanism to the greatest extent and ensure its normal operation without damage; thirdly, the entire operation process can be adjusted and controlled.

[0017] Preferably, the bottom of the fixed plate 2 is provided with a slider 15, which is connected to the crank-connecting rod mechanism 16. The fixed plate is controlled by a pneumatic device and can move up and down and flip.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stator and rotor assembly device for a permanent magnet synchronous motor in a new energy vehicle, characterized in that: The device includes a fixed plate (2) for supporting the stator (1), which is supported by a base (3) and positioned by a positioning block (4) on the edge of the fixed plate (2). A guide post (5) is provided at the center of the fixed plate (2), and a pneumatic pin (6) is provided at the center of the guide post. The device also includes an upper pressure plate (8) for supporting the rotor (7), which is connected to a lead screw and slider device (10) through a first linkage mechanism (9) and moves up and down along the upper guide device (11) as the lead screw and slider device moves up and down. The lead screw and slider device (10) is driven by a first pneumatic device (13) through a second linkage mechanism (12), and the pneumatic pin (6) is connected to a second pneumatic device (14).

2. The stator and rotor assembly device for a permanent magnet synchronous motor in a new energy vehicle according to claim 1, characterized in that: The bottom of the fixed plate (2) is provided with a slider (15), which is connected to the crank connecting rod mechanism (16).

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