Shaft centering on-line adjusting device for loading operation of motor test bench

Abstract

The utility model discloses a motor testboard loading operation shaft centering on-line adjusting device, which comprises a motor rack, a multi-shaft adjuster, a tested motor, a vibration sensor, a coupling and a main test motor, and is characterized in that the motor rack comprises a base surface, a main test base and a tested base, the main test base and the tested base are both arranged on the base surface, and the multi-shaft adjuster is arranged on the main test base. The main test motor is placed on the main test base, and the tested motor is placed on the tested base; the multi-axis regulator is used for carrying out multi-dimensional regulation on the position and angle of the tested motor; the tested motor is connected with the main test motor through a coupling; the vibration sensor is fixed on the housing of the tested motor and detects the vibration acceleration of the tested motor in the operation process. According to the utility model, by detecting the vibration state of the tested motor during high-speed operation, the centering degree of the motor coupling system is effectively reflected, and the radial position and the axial angle of the tested motor are adjusted on line through the manual or automatic motor base moving device, so that real centering is realized.

Description

Technical Field

[0001] This utility model belongs to the field of motor testing, and specifically relates to an online shaft alignment adjustment device for motor test bench under load. Background Technology

[0002] In motor testing systems, the motor under test and the main test motor are typically connected via a coupling. When the motor coupling system rotates at high speed, proper alignment effectively eliminates radial stress between the motor bearings and the coupling, reduces frictional losses between the motor shaft and the coupling, thereby improving testing accuracy and extending equipment lifespan.

[0003] Existing solutions for motor shaft alignment mainly include instrument measurement methods and laser alignment methods. These include laser optics-based alignment methods for static automatic alignment detection of motor coupling systems, and multi-axis linkage bench adjustment systems that use servo motors to control the multi-axis movement of the bench adjustment components, achieving a fully automated alignment detection and adjustment process.

[0004] However, existing technical solutions mainly target shaft alignment detection and adjustment of motor coupling systems in a static state. In practical applications, rubber vibration damping couplings are typically used between the main test motor and the tested motor. The alignment under online loading testing conditions differs significantly from that in a static state. When the motor shaft rotates at high speed and generates significant torque, the rubber blocks in the coupling deform. If the results of static alignment adjustment are directly applied to online operation, significant vibration and wear may still occur at the coupling during high-speed motor rotation, accompanied by loud noise, severely impacting test accuracy and equipment performance.

[0005] Currently, there is no good method for centering detection and adjustment of motor coupling systems under online operation conditions. Therefore, it is necessary to propose a centering detection and adjustment scheme suitable for motors under online loading conditions. Utility Model Content

[0006] To solve the above problems, the technical solution of this utility model is as follows: an online shaft alignment adjustment device for a motor test bench under load, comprising a motor bench, a multi-axis adjuster, a test motor, a vibration sensor, a coupling, and a main test motor, wherein,

[0007] The motor test bench includes a base platform, a main test base, and a test base, wherein the main test base and the test base are both set on the base platform, the main test motor is placed on the main test base, and the test motor is placed on the test base.

[0008] The multi-axis adjuster performs multi-dimensional adjustment of the position and angle of the tested motor;

[0009] The tested motor and the main tested motor are connected by a coupling;

[0010] The vibration sensor is fixed to the housing of the motor under test and detects the vibration acceleration during the operation of the motor under test.

[0011] Preferably, the multi-axis adjuster includes a front-to-back adjuster, a height adjuster, a translation adjuster, and a tilt and swivel adjuster, all of which can receive commands from the host computer. The front-to-back adjuster adjusts the distance between the tested motor and the main tested motor, the height adjuster adjusts the height of the tested motor relative to the main tested motor, the translation adjuster adjusts the left-right position of the tested motor relative to the main tested motor, and the tilt and swivel adjuster adjusts the parallel rotation angle and pitch angle of the tested motor relative to the main tested motor.

[0012] Preferably, the vibration sensor is fixed to the housing of the motor under test by magnetic attraction or adhesive.

[0013] Preferably, the main test motor is a torque-loaded motor.

[0014] Preferably, it also includes a controller capable of remotely controlling the multi-axis adjuster.

[0015] The beneficial effects of this invention include at least the following: This device effectively reflects the alignment of the motor coupling system by detecting the vibration state of the tested motor during high-speed operation, and achieves true alignment by manually or automatically adjusting the radial position and axial angle of the tested motor online via a motor base moving device. This device effectively avoids coupling eccentricity problems caused by deformation due to motor shaft loading, and supports online alignment adjustment during high-speed motor operation. Operators can obtain quantitative alignment information in real time through this solution, facilitating accurate judgment of the alignment status and reasonable adjustments. Through this adjustment device, test operators can quickly complete the adjustment process of the motor coupling system before testing, achieving shaft alignment under operating conditions, significantly improving equipment reliability and testing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the shaft alignment online adjustment device for a motor test bench under load in a specific embodiment of the present invention.

[0017] Figure 2 A schematic diagram of the front and rear adjusters of the shaft alignment online adjustment device for a motor test bench under load and operation, according to a specific embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the lifting regulator structure of the shaft alignment online adjustment device for a motor test bench under load and operation, as shown in a specific embodiment of this utility model;

[0019] Figure 4This is a schematic diagram of the translation adjuster structure of the shaft alignment online adjustment device for a motor test bench under load and operation, according to a specific embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the horizontal and vertical adjustment mechanism of the shaft alignment online adjustment device for a motor test bench under load, which is a specific embodiment of this utility model. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] See Figure 1 An online shaft alignment adjustment device for a motor test bench under load includes a motor test bench 1, a multi-axis adjuster, a test motor 3, a vibration sensor 4, a coupling 5, and a main test motor 6.

[0023] The motor test bench 1 includes a base surface 11, a main test base 13, and a test base 12. Both the main test base 13 and the test base 12 are mounted on the base surface 11. The main test motor 6 is placed on the main test base 13, and the test motor 3 is placed on the test base 12. The main test base 13 and the test base 12 are arranged on both sides of the base surface 11. The main test base 13 is used to fix the main test motor 6, and the test base 12 is used to fix the test motor 3 and is connected to a multi-axis adjuster. The multi-axis adjuster enables the motor 3 to change its position in the left-right, front-back, and lifting directions, as well as adjust its translation and pitch states, thereby achieving precise adjustment of the radial position and axial angle of the test motor 3 when it is coupled.

[0024] The multi-axis adjuster provides multi-dimensional adjustment of the position and angle of the tested motor 3. The multi-axis adjuster includes a front-to-back adjuster 21, a height adjuster 22, a translation adjuster 23, and a tilt and rotation adjuster 24, all of which can receive commands from the host computer. The front-to-back adjuster 21 adjusts the distance of the tested motor 3 relative to the main tested motor 6; the height adjuster 22 adjusts the height of the tested motor 3 relative to the main tested motor 6; the translation adjuster 23 adjusts the left-right position of the tested motor 3 relative to the main tested motor 6; and the tilt and rotation adjuster 24 adjusts the parallel rotation angle and tilt angle of the tested motor 3 relative to the main tested motor 6. Through the multi-axis adjuster, the influence caused by positional or angular deviations during the coupling process between the main tested motor 6 and the tested motor 3 can be effectively eliminated.

[0025] The tested motor 3 and the main tested motor 6 are connected via a coupling 5. The tested motor 3 is the test object. The main tested motor 6 is a torque-loading motor, providing precise torque and speed loading for the test. The coupling 5 consists of a metal coupling 5 and a rubber sleeve, used to connect the main tested motor 6 and the tested motor 3. This coupling 5 allows for a certain radial position error and axial tilt angle between the shafts of the main tested motor 6 and the tested motor 3, thereby improving the adaptability and flexibility of the coupling system.

[0026] Vibration sensor 4 is fixed to the housing of the motor under test 3 by magnetic attraction or adhesive, and detects the vibration acceleration of the motor under test 3 during operation. Data can be output through the instrument screen or communication interface to provide vibration monitoring information during the test.

[0027] In a specific embodiment, a controller is also included, which is connected to a multi-axis adjuster and allows the operator to send adjustment commands for left and right, forward and backward, lifting, rotation and pitch, so as to realize online remote control of the position and angle of the test motor 3 base.

[0028] The method of using this device is as follows:

[0029] S1. Coarse alignment: With the test motor stationary, send a coarse adjustment command to the multi-axis adjuster through the control handle to adjust the position of the test base and achieve static alignment of the main test motor shaft and the test motor shaft.

[0030] S2. Loading test conditions: Start the dynamometer, set the target speed and torque of the motor coupling system (main test motor, coupling, test motor), and monitor the vibration acceleration value of the vibration sensor in real time;

[0031] S3. Single-dimensional fine-tuning: Use the control handle to send a fine-tuning command for a specific dimension (such as forward or backward) to the multi-axis adjuster, and observe the change in the vibration acceleration value of the vibration sensor. When the acceleration value in that dimension gradually decreases from a large value to a minimum and then increases again, fix the position of that dimension at the position with the minimum acceleration value;

[0032] S4. Adjusting multiple dimensions sequentially: Switch to other dimensions sequentially and repeat step S3 until all dimensions have been adjusted. At this point, the motor noise is minimal, the vibration acceleration value is minimized, and the adjustment process ends.

[0033] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A shaft alignment online adjustment device for a motor test bench under load, characterized in that, It includes a motor test bench, a multi-axis adjuster, a test motor, vibration sensors, couplings, and a main test motor, among which... The motor test bench includes a base platform, a main test base, and a test base, wherein the main test base and the test base are both set on the base platform, the main test motor is placed on the main test base, and the test motor is placed on the test base. The multi-axis adjuster performs multi-dimensional adjustment of the position and angle of the tested motor; The tested motor and the main tested motor are connected by a coupling; The vibration sensor is fixed to the housing of the motor under test and detects the vibration acceleration during the operation of the motor under test.

2. The shaft alignment online adjustment device for motor test bench under load operation according to claim 1, characterized in that, The multi-axis adjuster includes a front-to-back adjuster, a height adjuster, a translation adjuster, and a tilt and swivel adjuster, all of which can receive commands from the host computer. The front-to-back adjuster adjusts the distance between the tested motor and the main tested motor, the height adjuster adjusts the height of the tested motor relative to the main tested motor, the translation adjuster adjusts the left and right position of the tested motor relative to the main tested motor, and the tilt and swivel adjuster adjusts the parallel rotation angle and pitch angle of the tested motor relative to the main tested motor.

3. The shaft alignment online adjustment device for motor test bench under load operation according to claim 1, characterized in that, The vibration sensor is fixed to the housing of the motor under test by magnetic attraction or adhesive.

4. The shaft alignment online adjustment device for motor test bench under load operation according to claim 1, characterized in that, The main test motor is a torque-loaded motor.

5. The shaft alignment online adjustment device for motor test bench under load operation according to claim 1, characterized in that, It also includes a controller that can remotely control the multi-axis adjuster.

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