Motor reliability testing device

Abstract

The utility model relates to the technical field of motor testing, in particular to a motor reliability testing device, which comprises a main frame, and an upper terminal positioning disc, a calibration stator assembly and a lower terminal positioning disc which are coaxially distributed from top to bottom are arranged in the main frame. The main frame is also provided with a stator fixing mechanism connected with the calibration stator assembly. The main frame is also provided with a lifting assembly connected with the lower terminal positioning disc. The lifting assembly can drive the lower terminal positioning disc to move to the calibration stator assembly and enable the top end of the rotor rotating shaft to be in butt joint with the upper terminal positioning disc. Through the upper terminal positioning disc, the calibration stator assembly and the lower terminal positioning disc which are coaxially distributed in the main frame, the device can accurately simulate the actual operation state of the motor. The design of the upper terminal positioning disc and the lower terminal positioning disc ensures the accurate butt joint between the rotor and the stator, and provides a stable and reliable basis for the test.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing, in particular to a motor reliability testing device. Background Art

[0002] In the field of power electronics, the reliability of motors is one of the important criteria for measuring their performance. Especially under high load and long-term operation conditions, the reliability of motors is directly related to the stability and service life of the entire equipment system. Therefore, the testing and evaluation of motor reliability is of vital importance.

[0003] Traditional motor reliability testing methods usually observe the motor's operating status and performance through simple power-on tests. However, this method can only test the basic functions of the motor, and it is difficult to effectively evaluate the motor's performance and potential failure points in complex working environments. In addition, traditional testing methods often lack standardization and automation, the testing process is cumbersome, and the accuracy and reliability of the test results are difficult to guarantee.

[0004] After continuous exploration and research on new motor reliability testing technologies, one important research direction is to build a special test device to simulate various working conditions of the motor in actual operation to achieve a comprehensive evaluation of the motor performance. However, most of the existing test devices have problems such as complex structure, inconvenient operation, and low test accuracy, which are difficult to meet the actual test needs. Utility Model Content

[0005] The utility model aims at the technical problems existing in the prior art and provides a motor reliability testing device to solve the problems of complex structure and complicated operation of the motor testing device.

[0006] The utility model solves the above-mentioned technical problem with the following technical solution: a motor reliability testing device, comprising a main frame, wherein an upper terminal positioning disk, a calibration stator assembly and a lower terminal positioning disk are coaxially distributed from top to bottom in the main frame; a stator fixing mechanism connected to the calibration stator assembly is also provided on the main frame; a lifting assembly connected to the lower terminal positioning disk is also provided on the main frame, and the lifting assembly can drive the lower terminal positioning disk to move to the calibration stator assembly and make the top end of the rotor shaft dock with the upper terminal positioning disk.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the lower terminal positioning disk comprises a disk body that can freely rotate coaxially relative to the calibrated stator assembly, and a positioning seat arranged on the disk body, wherein a positioning hole adapted to the rotor shaft is opened in the positioning seat.

[0009] Furthermore, the lower terminal positioning plate also includes a fixing frame and a rotating shaft; one end of the rotating shaft is connected to the positioning seat, and the other end is connected to a rotating bearing seat arranged on the fixing frame.

[0010] Furthermore, the fixing frame is also provided with a plurality of damping blocks facing the rotating bearing seat, and a brake cylinder connected to the damping blocks.

[0011] Furthermore, the stator fixing mechanism comprises a plurality of displacement cylinders radially distributed around the calibration stator assembly, and a support block is provided at the output end of the displacement cylinder, and an electric clamp is mounted on the support block.

[0012] Furthermore, the lifting assembly includes a plurality of lifting cylinders connected to a fixing frame.

[0013] Moreover, the motor reliability testing device provided by the utility model has at least the following beneficial effects compared with the prior art:

[0014] 1) Through the coaxially distributed upper terminal positioning plate, calibration stator assembly and lower terminal positioning plate set in the main frame, this device can accurately simulate the actual operating state of the motor. The design of the upper terminal positioning plate and the lower terminal positioning plate ensures the accurate docking between the rotor and the stator, providing a stable and reliable basis for the test.

[0015] 2) The stator fixing mechanism can achieve fast and accurate fixing of the calibrated stator assembly through the radially distributed displacement cylinder, support block and electric clamp. At the same time, the rotatable design of the lower terminal positioning plate and the lifting cylinder of the lifting assembly make it easy for the rotor to dock with the stator and simulate the rotation state in actual operation.

[0016] 3) The test device can simulate various conditions and working conditions of the motor in actual operation, such as different loads, speeds and current changes, etc. This precise simulation environment makes the test results closer to the actual situation and improves the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model from another perspective;

[0019] Figure 3 For this utility model Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 It is a partial schematic diagram of the stator fixing mechanism of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] Main frame 1, upper terminal positioning plate 2, calibration stator assembly 3, lower terminal positioning plate 4, plate body 4.1, positioning seat 4.2, fixing frame 4.3, rotating shaft 4.4, rotating bearing seat 4.5, stator fixing mechanism 5, shift cylinder 5.1, support block 5.2, electric clamp 5.3, lifting assembly 6, damping block 7, brake cylinder 8. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0025] like Figure 1 and Figure 2 As shown, the motor reliability testing device of the present utility model comprises a main frame 1, in which an upper terminal positioning disk 2, a calibration stator assembly 3 and a lower terminal positioning disk 4 are coaxially distributed from top to bottom. The main frame 1 is also provided with a stator fixing mechanism 5 connected to the calibration stator assembly 3. The main frame 1 is also provided with a lifting assembly 6 connected to the lower terminal positioning disk 4, and the lifting assembly 6 can drive the lower terminal positioning disk 4 to move to the calibration stator assembly 3 and make the top end of the rotor shaft dock with the upper terminal positioning disk 2.

[0026] The above-mentioned device is based on the main frame 1, and realizes the reliability test of the motor rotor assembly through the coordinated work of various components installed thereon. First, the upper terminal positioning disk 2, the calibration stator assembly 3 and the lower terminal positioning disk 4 are coaxially distributed from top to bottom in the main frame to provide an accurate positioning reference for the test. The calibration stator assembly 2 is fixed by the stator fixing mechanism 5 to ensure stability during the test. The lower terminal positioning disk 4 is lifted and lowered by the lifting assembly 6. The lifting assembly 6 drives the lower terminal positioning disk 4 to move to the vicinity of the calibration stator assembly 3, so that the top end of the rotor shaft is docked with the upper terminal positioning disk 2. During this process, the disk body on the lower terminal positioning disk 4 can rotate freely relative to the calibration stator assembly 3, simulating the rotation state in actual work.

[0027] During the test, the calibration stator assembly 2 is energized to generate a magnetic field, and the rotor is driven to rotate, so as to simulate the operating state under actual working conditions, thereby comprehensively evaluating the reliability of the motor.

[0028] As an implementation method, Figure 3 As shown, the lower terminal positioning disk 4 includes a disk body 4.1 that can rotate freely coaxially relative to the calibration stator assembly 3, and a positioning seat 4.2 arranged on the disk body 4.1, and a positioning hole adapted to the rotor shaft is opened in the positioning seat 4.2. The disk body 4.1 is designed to be able to rotate freely coaxially relative to the calibration stator assembly 3, which simulates the rotation state of the motor during actual operation. This design makes it possible to more realistically simulate the operating environment of the motor during the test process. The positioning seat 4.2 is located on the disk body 4.1, and a positioning hole adapted to the rotor shaft is provided inside it. When the rotor shaft is sent to the test position, it can be accurately inserted into the positioning hole to ensure precise docking with the upper terminal positioning disk 2.

[0029] In addition, the lower terminal positioning plate 4 also includes a fixed frame 4.3 and a rotating shaft 4.4; one end of the rotating shaft 4.4 is connected to the positioning seat 4.2, and the other end is connected to the rotating bearing seat 4.5 provided on the fixed frame 4.3. One end of the rotating shaft 4.4 is connected to the positioning seat 4.2, and the other end is connected to the rotating bearing seat 4.5 on the fixed frame 4.3. This connection method ensures that the positioning seat 4.2 and the plate body 4.1 can rotate freely around the rotating shaft 4.4, and ensures the stability of the entire lower terminal positioning plate 4 structure.

[0030] In addition, the structure of the upper terminal positioning disk 2 is the same as that of the above-mentioned lower terminal positioning disk 4, both of which are assembled from a disk body 4.1, a positioning seat 4.2, a fixing frame 4.3, a rotating shaft 4.4 and a rotating bearing seat 4.5. The difference is that the overall position of the upper terminal positioning disk 2 is fixed, which will not be elaborated here.

[0031] As an embodiment, the fixing frame 4.3 is also provided with a plurality of damping blocks 7 facing the rotating bearing seat 4.5, and a brake cylinder 8 connected to the damping blocks 7; the damping blocks 7 are installed facing the rotating bearing seat 4.5, and their main function is to provide friction, and adjust the rotation resistance of the motor rotor by increasing or decreasing the contact pressure between the rotating bearing seat 4.5. This adjustment enables the test device to simulate the running state of the motor under different load conditions to comprehensively evaluate its performance.

[0032] The brake cylinder 8 is connected to the damping block 7 and can accurately control the movement of the damping block 7 through air pressure or hydraulic drive. When the motor rotor needs to be stopped, the brake cylinder 8 will drive the damping block 7 to quickly increase the contact pressure with the rotating bearing seat 4.5, thereby quickly increasing the friction force and causing the motor rotor to stop quickly. This rapid stop control is crucial for accurately measuring the braking performance of the motor.

[0033] As an implementation method, Figure 4As shown, the stator fixing mechanism 5 includes a plurality of shift cylinders 5.1 distributed radially around the calibration stator assembly 3, and the output end of the shift cylinder 5.1 is provided with a support block 5.2, and the support block 5.2 is equipped with an electric clamp 5.3. The shift cylinder 5.1 is distributed radially around the stator fixing mechanism 5, and such a design can ensure stable clamping of the stator from multiple directions. When the stator needs to be fixed, the shift cylinder 5.1 starts to work, and its output end pushes the support block 5.2 to move toward the stator. As a component connecting the shift cylinder 5.1 and the electric clamp 5.3, the support block 5.2 can not only transmit force, but also ensure the stable position of the electric clamp 5.3, so as to facilitate the maintenance and replacement of the calibration stator assembly 3 in actual work.

[0034] The calibrated stator assembly 3 in the motor reliability test device is one of the core components in the test process, which is composed of key elements such as the stator and the winding group.

[0035] The stator is the basis for calibrating the stator assembly 3 and provides the magnetic field required for the operation of the motor. Its precise design ensures that a stable and required magnetic field can be generated when power is turned on, thereby driving the rotor of the motor to rotate.

[0036] As an embodiment, the lifting assembly 6 includes a plurality of lifting cylinders connected to the fixing frame 4.3. When the lower terminal positioning plate 4 and the rotor thereon need to be lifted or lowered, the lifting cylinders start to work. Driven by air pressure or hydraulic pressure, the lifting cylinders generate thrust or pulling force to raise or lower the fixing frame 4.3 and the entire lower terminal positioning plate 4.

[0037] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0038] Although the preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A motor reliability testing device, characterized in that: The invention comprises a main frame (1), wherein an upper terminal positioning disk (2), a calibration stator assembly (3) and a lower terminal positioning disk (4) are coaxially arranged from top to bottom in the main frame (1); a stator fixing mechanism (5) connected to the calibration stator assembly (3) is also provided on the main frame (1); a lifting assembly (6) connected to the lower terminal positioning disk (4) is also provided on the main frame (1), and the lifting assembly (6) can drive the lower terminal positioning disk (4) to move to the calibration stator assembly (3) and make the top end of the rotor shaft dock with the upper terminal positioning disk (2).

2. The motor reliability testing device according to claim 1, characterized in that: The lower terminal positioning disk (4) comprises a disk body (4.1) that can freely rotate coaxially relative to the calibrated stator assembly (3), and a positioning seat (4.2) arranged on the disk body (4.1), wherein a positioning hole adapted to the rotor shaft is provided in the positioning seat (4.2).

3. The motor reliability testing device according to claim 2, characterized in that: The lower terminal positioning plate (4) also includes a fixing frame (4.3) and a rotating shaft (4.4); one end of the rotating shaft (4.4) is connected to the positioning seat (4.2), and the other end is connected to a rotating bearing seat (4.5) arranged on the fixing frame (4.3).

4. The motor reliability testing device according to claim 3, characterized in that: The fixing frame (4.3) is also provided with a plurality of damping blocks (7) facing the rotating bearing seat (4.5), and a brake cylinder (8) connected to the damping blocks (7).

5. The motor reliability testing device according to claim 1, characterized in that: The stator fixing mechanism (5) comprises a plurality of displacement cylinders (5.1) radially distributed around the calibration stator assembly (3); a support block (5.2) is provided at the output end of the displacement cylinder (5.1); and an electric clamp (5.3) is mounted on the support block (5.2).

6. The motor reliability testing device according to claim 3, characterized in that: The lifting assembly (6) comprises a plurality of lifting cylinders connected to a fixing frame (4.3).

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