A motor rotor dynamic balance detection device

Abstract

This utility model relates to a motor rotor dynamic balancing detection device, comprising a base, a first mounting groove and a second mounting groove formed at the top of the base, a slide rail fixedly mounted at the bottom of the second mounting groove, a first slider slidably mounted on the top of the slide rail, and a second slider slidably mounted in the first mounting groove; a first mounting block fixedly mounted on the top of the first slider; a second mounting block fixedly mounted at the top of the base; a fixing module fixedly mounted on the top of the first and second mounting blocks; a drive module fixedly mounted on the right side of the first mounting block; and a detection module fixedly mounted on one side of the fixing module. The distance between the first and second mounting blocks is controlled by the slide rail to accommodate motor rotors of different lengths. The fixing module restricts the motor rotor to determine whether the motor rotor is in a dynamic balance state, and the drive module better adapts to the rotational speed of the motor rotor.

Description

Technical Field

[0001] This utility model relates to the field of motor rotor dynamic balancing testing technology, and in particular to a motor rotor dynamic balancing testing device. Background Technology

[0002] As a core power device that converts electrical energy into mechanical energy, the electric motor is widely used in many fields such as industrial manufacturing, aerospace, rail transportation, and home appliances. Its operating performance directly affects the working efficiency, energy consumption level, and service life of related equipment. The motor rotor, as the key rotating component for energy conversion, can generate periodic centrifugal forces during high-speed operation if there is uneven mass distribution. This can lead to problems such as equipment vibration, increased noise, and accelerated bearing wear, reducing the motor's operating accuracy and stability, and potentially causing equipment failure or even safety accidents. Therefore, accurate dynamic balancing of the motor rotor is a crucial step in ensuring the reliable operation of the motor and related equipment.

[0003] Currently, motor rotor dynamic balancing testing devices on the market still have many limitations in practical applications. On the one hand, existing devices have poor adaptability, and most can only test motor rotors within a specific length and diameter range. When dealing with rotors of different specifications, frequent tooling changes or equipment structure adjustments are required, which is cumbersome and inefficient, making it difficult to meet the needs of diverse production scenarios. On the other hand, the fixing mechanism of some testing devices is poorly designed, resulting in insufficient clamping stability of the motor rotor. During high-speed rotor rotation, displacement or shaking can easily occur, leading to additional vibration interference during the testing process and affecting the accuracy of the test data.

[0004] Meanwhile, existing drive modules often suffer from unstable rotational speed and low transmission efficiency when driving the rotor, failing to accurately simulate the actual operating speed of the rotor, thus affecting the authenticity and reliability of dynamic balance testing. Furthermore, some testing devices have low sensor sensitivity, insufficient accuracy in acquiring vibration and speed signals, and limited data processing capabilities, making it difficult to quickly and accurately determine the rotor's dynamic balance state. This results in large errors in the test results, failing to provide a valid basis for rotor correction. Utility Model Content

[0005] The purpose of this invention is to provide a motor rotor dynamic balance testing device to solve the problems existing in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A motor rotor dynamic balancing testing device, comprising:

[0008] The base has a first mounting groove symmetrically arranged at the top of the base, which runs from left to right. A second mounting groove runs from left to right at the center of the top of the base. A slide rail is fixedly installed at the bottom of the second mounting groove. A first slider is slidably installed at the top of the slide rail. A second slider is slidably installed in each of the first mounting grooves.

[0009] A first mounting block is fixedly mounted on the top of the second slider and the first slider, and a limit groove is formed at the right end of the first mounting block;

[0010] The second mounting block is fixedly mounted on the top right side of the base;

[0011] A fixing module is provided, wherein multiple fixing modules are respectively fixedly installed on the top of the first mounting block and the second mounting block, and the fixing module is used to restrict the movement of the motor rotor;

[0012] A drive module is fixedly mounted on the right side of the first mounting block, and the drive module is used to drive the motor rotor to rotate.

[0013] The detection module is fixedly installed on the side of the fixed module near the motor rotor, and the detection module is used to detect the dynamic balance state of the motor rotor.

[0014] By adopting the above technical solution, the distance between the first mounting block and the second mounting block is controlled by the left and right movement of the first mounting block on the slide rail, thereby adapting to motor rotors of different lengths. Then, the motor rotor is restricted by the fixing module, and the motor rotor is rotated by the drive module. Finally, the motor rotor is detected by the detection module to determine whether the motor rotor is in a dynamic balance state, and the drive module better adapts to the speed of the motor rotor.

[0015] In a further embodiment, the fixing module includes:

[0016] Support columns, multiple support columns are provided, the bottom end of the support column is fixedly installed on the top of the first mounting block, and the left end of the support column is provided with a third mounting groove that runs through the left and right sides;

[0017] A crossbeam, the two ends of which are fixedly installed on the top of the support column;

[0018] The first round rod, and multiple first round rods are provided. The first round rods are respectively inserted into the third mounting groove. A disc is fixedly installed at the end of the first round rod near the motor rotor.

[0019] The first limiting block, the other end of the first round rod is fixedly installed to the first limiting block, and the first and second turntables are rotatably installed on the side of the first limiting block near the motor rotor, with the central axes of the first and second turntables located on the same horizontal plane;

[0020] The second limiting block is fixedly installed on the side of the first limiting block away from the motor rotor;

[0021] The third limiting block is fixedly installed at the bottom end of the crossbeam;

[0022] The first cylinder is fixedly installed on the top of the first mounting block, and the movable end of the first cylinder is fixedly installed with the bottom end of the first limiting block.

[0023] In a further embodiment, the driving module includes:

[0024] A servo motor, which is fixedly mounted on the rear end of the first mounting block;

[0025] The second cylinder is fixedly installed at the right front end of the first mounting block;

[0026] A limiting block is fixedly installed to the movable end of the second cylinder. The limiting block is slidably installed on the right side of the first mounting block. A first clearance hole is provided at the right end of the limiting block, which extends through the cylinder from left to right.

[0027] The second round rod, one end of which passes through the first clearance hole and is slidably installed in the limiting groove;

[0028] The conveyor belt is sleeved on the second round rod, the shaft of the servo motor, and the motor rotor.

[0029] In a further embodiment, the detection module includes:

[0030] A vibration sensor is fixedly installed at the right end of the third limiting block, and the vibration sensor is used to detect the vibration of the motor rotor rotation.

[0031] A speed sensor is fixedly installed at the right end of the third limiting block, and the speed sensor is located on one side of the vibration sensor;

[0032] The controller is fixedly mounted on the rear side of the first mounting block and is electrically connected to the vibration sensor and the speed sensor.

[0033] In a further embodiment, the diameter of the disk is greater than the diameter of the first rod, and the diameter of the disk is greater than the width of the third mounting groove.

[0034] In a further embodiment, a linear motor is fixedly installed at the right end of the slide rail, and the linear motor is fixedly installed with the first slider. The linear motor is used to drive the first mounting block to move.

[0035] By adopting the above technical solution, the linear motor is driven to move the first slider to the left, thereby increasing the distance between the first and second fixed blocks. The second cylinder is driven to move the limiting block backward, thereby making the conveyor belt slack. Then, the two ends of the motor rotor are placed on the top of the first and second turntables of the fixing device, respectively. The conveyor belt is placed on the motor rotor, the servo motor rotor, and the second round rod. The first cylinder is activated, thereby moving the first limiting block upward. The motor rotor is restricted by the third limiting block, the first turntable, and the second turntable. The second cylinder is activated again, causing the limiting block to move forward, thereby making the conveyor belt taut. The servo motor is activated, causing the conveyor belt to drive the motor rotor to rotate. The vibration sensor collects the vibration data of the fixing module and transmits it to the controller. The speed sensor collects the data of the motor rotor through laser and transmits it to the controller, thereby determining whether the motor rotor is in a balanced state.

[0036] In summary, this utility model has the following beneficial effects:

[0037] 1. By driving a linear motor to move the first slider to the left, the distance between the first and second fixed blocks is increased. The second cylinder is driven to move the limit block backward, thus slackening the conveyor belt. The two ends of the motor rotor are placed on the top of the first and second turntables of the fixing device, respectively. The conveyor belt is then placed on the motor rotor, the servo motor rotor, and the second round rod. The first cylinder is activated, causing the first limit block to move upward. The motor rotor is then restricted by the third limit block, the first turntable, and the second turntable. The second cylinder is then activated, causing the limit block to move forward, thus tautening the conveyor belt. The servo motor is activated, causing the conveyor belt to drive the motor rotor to rotate. The vibration sensor collects the vibration data of the fixing module and transmits it to the controller. The speed sensor collects the data of the motor rotor via laser and transmits it to the controller, thereby determining whether the motor rotor maintains a balanced state. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0039] Figure 2 This is a structural schematic diagram of the fixing module of this utility model;

[0040] Figure 3 This is a schematic diagram of the drive module of this utility model.

[0041] In the diagram, 1. Base; 2. Slide rail; 3. First slider; 4. Second slider; 5. First mounting block; 6. Second mounting block; 7. Fixing module; 71. Support column; 72. Crossbeam; 73. First round rod; 74. Disc; 75. First limiting block; 76. Second limiting block; 77. Third limiting block; 78. First cylinder; 8. Drive module; 81. Servo motor; 82. Second cylinder; 83. Limit block; 84. Second round rod; 85. Conveyor belt; 86. Vibration sensor; 87. Speed ​​sensor; 88. Controller; 9. Detection module; 10. First turntable; 11. Second turntable; 12. Linear motor. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings.

[0043] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0044] Example 1:

[0045] like Figures 1-3 As shown, a motor rotor dynamic balancing detection device includes a base 1. The top of the base 1 has a first mounting groove symmetrically arranged from front to back, running from left to right. A second mounting groove running from left to right is located at the center of the top of the base 1. A slide rail 2 is fixedly installed at the bottom of the second mounting groove, and a first slider 3 is slidably installed on the top of the slide rail 2. Second sliders 4 are slidably installed in both the first mounting grooves. A first mounting block 5 is fixedly installed on the top of the second sliders 4 and 3, and a limit groove is provided at the right end of the first mounting block 5. A second mounting block 6 is fixedly installed on the right side of the top of the base 1. A fixing module 7 is provided in multiple units, and is respectively fixedly installed on the top of the first mounting block 5 and the second mounting block 6. The fixing module 7 is used to restrict the movement of the motor rotor. A drive module 8 is fixedly installed on the right side of the first mounting block 5 and is used to drive the motor rotor to rotate. A detection module 9 is fixedly installed on the side of the fixing module 7 near the motor rotor and is used to detect the dynamic balance state of the motor rotor.

[0046] The fixing module 7 includes multiple support columns 71, the bottom of which is fixedly installed on the top of the first mounting block 5. A third mounting groove extending through the left side of each support column 71 is provided. A crossbeam 72 is fixedly installed on the top of the support columns 71 at both ends. Multiple first round rods 73 are provided, each passing through the third mounting groove. A disc 74 is fixedly installed at one end of each first round rod near the motor rotor. A first limiting block 75 is also provided, and the other end of each first round rod 73 is fixed to the first limiting block 75. The installation includes a first limiting block 75 with a first turntable 10 and a second turntable 11 rotatably mounted on the side of the first limiting block 75 near the motor rotor, the central axes of the first turntable 10 and the second turntable 11 being located on the same horizontal plane; a second limiting block 76, which is fixedly mounted on the side of the first limiting block 75 away from the motor rotor; a third limiting block 77, which is fixedly mounted on the bottom end of the crossbeam 72; and a first cylinder 78, which is fixedly mounted on the top of the first mounting block 5, with the movable end of the first cylinder 78 fixedly mounted to the bottom end of the first limiting block 75.

[0047] The drive module 8 includes a servo motor 81, which is fixedly installed at the rear end of the first mounting block 5; a second cylinder 82, which is fixedly installed at the front right end of the first mounting block 5; a limiting block 83, which is fixedly installed with the movable end of the second cylinder 82 and is slidably installed on the right side of the first mounting block 5, with a first clearance hole extending through the left and right sides at the right end of the limiting block 83; a second round rod 84, one end of which passes through the first clearance hole and is slidably installed in the limiting groove; and a conveyor belt 85, which is sleeved on the second round rod 84, the shaft of the servo motor 81, and the motor rotor.

[0048] The detection module 9 includes a vibration sensor 86, which is fixedly installed at the right end of the third limiting block 77 and is used to detect the vibration of the motor rotor rotation; a speed sensor 87, which is fixedly installed at the right end of the third limiting block 77 and is located on one side of the vibration sensor 86; and a controller 88, which is fixedly installed at the rear side of the first mounting block 5 and is electrically connected to the vibration sensor 86 and the speed sensor 87.

[0049] The diameter of the disc 74 is larger than the diameter of the first rod 73, and the diameter of the disc 74 is larger than the width of the third mounting groove. A linear motor 12 is fixedly installed at the right end of the slide rail 2. The linear motor 12 is fixedly installed with the first slider 3. The linear motor 12 is used to drive the first mounting block 5 to move.

[0050] The specific implementation process is as follows: The linear motor 12 is driven to move the first slider 3 to the left, thereby increasing the distance between the first fixed block and the second fixed block. The second cylinder 82 is driven to move the limiting block 83 backward, thereby making the conveyor belt 85 slack. Then, the two ends of the motor rotor are placed on the top of the first turntable 10 and the second turntable 11 of the fixing device, respectively. The conveyor belt 85 is placed on the motor rotor, the rotor of the servo motor 81, and the second round rod 84. The first cylinder 78 is started, thereby making the first limiting block 75 move upward. The motor rotor is restricted by the third limiting block 83, the first turntable 10, and the second turntable 11. The second cylinder 82 is then started, causing the limiting block 83 to move forward, thereby making the conveyor belt 85 taut. The servo motor 81 is started, causing the conveyor belt 85 to drive the motor rotor to rotate. The vibration sensor 86 collects the vibration data of the fixing module 7 and transmits it to the controller 88. The speed sensor 87 collects the data of the motor rotor through laser and transmits it to the controller 88, thereby determining whether the motor rotor is in a balanced state.

[0051] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0052] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A dynamic balancing testing device for motor rotors, characterized in that... ,include: The base (1) has a first mounting groove symmetrically arranged at the top of the base (1), which runs from left to right. The center of the top of the base (1) has a second mounting groove that runs from left to right. A slide rail (2) is fixedly installed at the bottom of the second mounting groove. A first slider (3) is slidably installed at the top of the slide rail (2). A second slider (4) is slidably installed in the first mounting groove. The first mounting block (5) is fixedly mounted on the top of the second slider (4) and the first slider (3), and a limiting groove is provided at the right end of the first mounting block (5). The second mounting block (6) is fixedly mounted on the top right side of the base (1); A fixing module (7) is provided in multiple ways. The fixing module (7) is fixedly installed on the top of the first mounting block (5) and the second mounting block (6) respectively. The fixing module (7) is used to restrict the movement of the motor rotor. A drive module (8) is fixedly installed on the right side of the first mounting block (5). The drive module (8) is used to drive the motor rotor to rotate. The detection module (9) is fixedly installed on the side of the fixed module (7) near the motor rotor. The detection module (9) is used to detect the dynamic balance state of the motor rotor.

2. The motor rotor dynamic balancing testing device according to claim 1, characterized in that: The fixed module (7) includes: Support column (71), multiple support columns (71) are provided, the bottom end of the support column (71) is fixedly installed on the top end of the first mounting block (5), and the left end of the support column (71) is provided with a third mounting groove that runs through the left and right sides; A crossbeam (72), the two ends of which are fixedly installed on the top of the support column (71); First round rod (73), multiple first round rods (73) are provided, and the first round rods (73) are respectively inserted into the third mounting groove. A disc (74) is fixedly installed at the end of the first round rod (73) near the motor rotor. The first limiting block (75) has the other end of the first round rod (73) fixedly installed with the first limiting block (75). The first limiting block (75) has a first turntable (10) and a second turntable (11) rotatably installed on the side of the first limiting block (75) near the motor rotor. The central axes of the first turntable (10) and the second turntable (11) are located on the same horizontal plane. The second limiting block (76) is fixedly installed on the side of the first limiting block (75) away from the motor rotor; The third limiting block (77) is fixedly installed at the bottom end of the crossbeam (72); The first cylinder (78) is fixedly installed on the top of the first mounting block (5), and the movable end of the first cylinder (78) is fixedly installed with the bottom end of the first limiting block (75).

3. The motor rotor dynamic balancing testing device according to claim 1, characterized in that: The driving module (8) includes: A servo motor (81) is fixedly mounted on the rear end of the first mounting block (5); The second cylinder (82) is fixedly installed on the right front end of the first mounting block (5); Limiting block (83), the limiting block (83) is fixedly installed with the movable end of the second cylinder (82), the limiting block (83) is slidably installed on the right side of the first mounting block (5), and the right end of the limiting block (83) is provided with a first clearance hole that passes through from left to right; The second round rod (84) has one end slidably installed in the limiting groove through the first clearance hole; The conveyor belt (85) is sleeved on the second round rod (84), the shaft of the servo motor (81), and the motor rotor.

4. The motor rotor dynamic balancing testing device according to claim 1, characterized in that: The detection module (9) includes: Vibration sensor (86), which is fixedly installed on the right end of the third limiting block (77), is used to detect the vibration of the motor rotor rotation; A speed sensor (87) is fixedly installed at the right end of the third limiting block (77), and the speed sensor (87) is located on one side of the vibration sensor (86); The controller (88) is fixedly mounted on the rear side of the first mounting block (5) and is electrically connected to the vibration sensor (86) and the speed sensor (87).

5. The motor rotor dynamic balancing testing device according to claim 2, characterized in that: The diameter of the disc (74) is greater than the diameter of the first rod (73), and the diameter of the disc (74) is greater than the width of the third mounting groove.

6. The motor rotor dynamic balancing testing device according to claim 1, characterized in that: A linear motor (12) is fixedly installed at the right end of the slide rail (2). The linear motor (12) is fixedly installed with the first slider (3). The linear motor (12) is used to drive the first mounting block (5) to move.

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