An automatic balancing device for a motor rotor

Abstract

The utility model relates to balance test technical field discloses a motor rotor automatic balancing device, including base, the right side fixedly connected with first motor of base, the output fixedly connected with screw rod of first motor, the top left side of base is provided with rotating mechanism, the surface screw thread connection of screw rod has the moving frame, the rear end fixedly connected with connecting frame of moving frame, the top fixedly connected with first hydraulic rod of connecting frame, the telescopic end fixedly connected with test pressing plate of first hydraulic rod, the top of base is provided with elevating system, the utility model discloses through third motor drive placement board drive rotor automatic pair two sides, can fast switching detection surface, both avoid the possible knock injury of manual turnover rotor, and shorten the interval time of two sides detection, realize rotor full -range balance state's comprehensive detection, especially applicable to the scene that rotor two sides balance precision all has the requirement.

Description

Technical Field

[0001] This utility model relates to the field of balance testing technology, and in particular to an automatic balancing device for motor rotors. Background Technology

[0002] The motor rotor is the rotating component of a motor. A motor consists of a rotor and a stator, and it's a device used to convert electrical energy into mechanical energy and vice versa. Motor rotors are categorized into electric motor rotors and generator rotors. Using a substandard motor rotor will cause the rotor's center of mass to deviate from its actual center of inertia, resulting in significant imbalance after reaching operating speed. Dynamic balancing testing is the process of dynamically balancing and correcting the rotor to meet usage requirements, ensuring stable operation of the motor rotor.

[0003] Traditional motor rotor balancing tests rely heavily on manual operation, which is not only extremely inefficient, but also severely limited by the workers' technical skills and operating experience, making it difficult to meet the needs of large-scale, high-precision production. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an automatic rotor balancing device for motors.

[0005] This utility model is achieved using the following technical solution: an automatic balancing device for motor rotors, comprising a base, a first motor fixedly connected to the right side of the base, a lead screw fixedly connected to the output end of the first motor, a rotating mechanism provided on the top left side of the base, a movable frame threadedly connected to the surface of the lead screw, a connecting frame fixedly connected to the rear end of the movable frame, a first hydraulic rod fixedly connected to the top of the connecting frame, a test pressure plate fixedly connected to the telescopic end of the first hydraulic rod, and a lifting mechanism provided on the top of the base.

[0006] Through the above technical solution, the actuator for the lateral adjustment of the moving frame has a bottom that slides into the groove of the base, a top support connecting frame, and a fixed connecting plate on the left. Driven by a lead screw, it moves laterally along the groove to adjust the distance with the test frame, adapting to motor rotors of different lengths, ensuring that both ends of the rotor can be stably placed on the rollers of the test frame and the moving frame; the component that directly contacts and presses the rotor with the test pressure plate is pushed by the first hydraulic rod, and its bottom is usually designed to be arc-shaped or adapted to the outer circle of the rotor to increase the contact area with the rotor, ensure uniform distribution of the pressing force, avoid damaging the rotor surface, and improve the stability of the fixation. It is also equipped with a pressure sensor, which is a Tekscan series FlexiForce A201 pressure sensor, to capture dynamic balance abnormality signals—when the rotor is unbalanced, the periodic centrifugal force generated by high-speed rotation will cause the contact pressure to fluctuate synchronously.

[0007] As a further improvement to the above solution, a groove is provided on the top of the base, and the bottom surface of the movable frame is slidably connected to the groove on the top of the base.

[0008] As a further improvement to the above solution, the rotating mechanism includes a test frame, a second motor is fixedly connected to the left side of the test frame, a wheel is fixedly connected to the output end of the second motor, a belt is rotatably connected inside the wheel, and a roller is fixedly connected to the right side of the wheel.

[0009] With the above technical solution, the number of rotating wheels is set to three, one rotating wheel is fixed to the second motor, and the other two rotating wheels are connected to one side of the rollers inside the test frame; the number of rollers is set to four, with two on one side, respectively distributed inside the test frame and the moving frame and rotatably connected.

[0010] As a further improvement to the above solution, the test frame is located on top of the base, and the bottom of the test frame is fixedly connected to the top of the base.

[0011] As a further improvement to the above scheme, the number of the rotating wheels is set to three, and the three rotating wheels are connected by belt drive. The rotating wheels are rotatably connected to the inside of the test frame.

[0012] As a further improvement to the above solution, the lifting mechanism includes a connecting plate, a second hydraulic rod is fixedly connected to the bottom of the inner wall of the connecting plate, a support plate is fixedly connected to the telescopic end of the second hydraulic rod, a placement plate is provided on the top of the support plate, a motor rotor is provided on the top of the placement plate, and a third motor is fixedly connected to the bottom of the support plate.

[0013] The above technical solution involves a mounting plate that directly supports the motor rotor. The rotor is placed on top, and the bottom connects to the output of a third motor. Height adjustment is achieved by using a second hydraulic rod for lifting, and rotation is achieved by the third motor, allowing for the swapping of the rotor's two sides and avoiding the inconvenience and errors of manually flipping the rotor.

[0014] As a further improvement to the above solution, the connecting plate is located on the left side of the movable frame, the right side of the connecting plate is fixedly connected to the left side of the movable frame, and the output end of the third motor is fixedly connected to the bottom of the placement plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention utilizes a first motor, a second hydraulic rod, and a third hydraulic rod. The first motor drives the moving frame for lateral alignment, the second hydraulic rod controls the rotor's lifting and lowering, the first hydraulic rod automatically presses the rotor, and the second motor drives the rotor to rotate. The entire process eliminates the need for manual adjustment of the rotor position, pressing to fix it, or pushing to rotate. Simply placing the rotor on the placement plate starts the process. This not only reduces the tedium of manual operation but also avoids detection errors caused by inaccurate alignment or uneven pressing pressure. Furthermore, it reduces the labor intensity of operators and improves overall detection efficiency.

[0017] This invention features a placement plate, which is driven by a third motor to automatically switch the rotor between its two sides. This allows for rapid switching of the detection surfaces, avoiding potential damage from manual rotor flipping and shortening the interval between detections on both sides. It enables comprehensive detection of the rotor's full circumference balance, making it particularly suitable for scenarios where both sides of the rotor require high balance accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the test frame structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the roller structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the lifting mechanism of this utility model;

[0022] Figure 5 This utility model Figure 1 Schematic diagram of cross-section structure.

[0023] Explanation of key symbols:

[0024] 1. Base; 2. First motor; 3. Lead screw; 4. Rotating mechanism; 41. Test frame; 42. Second motor; 43. Rotating wheel; 44. Belt; 45. Roller; 5. Moving frame; 6. Connecting frame; 7. First hydraulic rod; 8. Test pressure plate; 9. Lifting mechanism; 91. Connecting plate; 92. Second hydraulic rod; 93. Support plate; 94. Placement plate; 95. Motor rotor; 96. Third motor. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example:

[0027] Please combine Figure 1-5 This embodiment of an automatic rotor balancing device for a motor includes a base 1. A first motor 2 is fixedly connected to the right side of the base 1. A lead screw 3 is fixedly connected to the output end of the first motor 2. A rotating mechanism 4 is provided on the top left side of the base 1. A movable frame 5 is threadedly connected to the surface of the lead screw 3. A connecting frame 6 is fixedly connected to the rear end of the movable frame 5. A first hydraulic rod 7 is fixedly connected to the top of the connecting frame 6. A test pressure plate 8 is fixedly connected to the telescopic end of the first hydraulic rod 7. A lifting mechanism 9 is provided on the top of the base 1. When the first motor 2 is started, it drives the lead screw 3 to rotate. Since the movable frame 5 is threadedly connected to the lead screw 3 and its bottom slides along the groove at the top of the base 1, the movable frame 5 will move smoothly laterally along the groove. The connecting frame 6 fixed on its right side will adjust its position accordingly until the distance between the movable frame 5 and the test frame 41 is adapted to the rotor length.

[0028] The top of the base 1 has a groove, and the bottom surface of the movable frame 5 is slidably connected to the groove on the top of the base 1.

[0029] The rotating mechanism 4 includes a test frame 41. A second motor 42 is fixedly connected to the left side of the test frame 41. A rotating wheel 43 is fixedly connected to the output end of the second motor 42. A belt 44 is rotatably connected inside the rotating wheel 43. A roller 45 is fixedly connected to the right side of the rotating wheel 43. When the second motor 42 is powered on, its output end drives one of the rotating wheels 43 fixed to it to rotate. The belt 44 drives the other two rotating wheels 43 to rotate synchronously and in the same direction, thereby driving the pressed motor rotor 95 to rotate as well, for subsequent balance testing.

[0030] The test rack 41 is located on top of the base 1, and the bottom of the test rack 41 is fixedly connected to the top of the base 1.

[0031] There are three rotating wheels 43, which are connected by a belt 44 and rotated inside the test frame 41.

[0032] The lifting mechanism 9 includes a connecting plate 91. A second hydraulic rod 92 is fixedly connected to the bottom of the inner wall of the connecting plate 91. A support plate 93 is fixedly connected to the telescopic end of the second hydraulic rod 92. A placement plate 94 is provided on the top of the support plate 93. A motor rotor 95 is provided on the top of the placement plate 94. A third motor 96 is fixedly connected to the bottom of the support plate 93. First, the motor rotor 95 to be tested is placed stably on the placement plate 94. Then, the second hydraulic rod 92 below the placement plate 94 is activated to extend upward so as to drive the placement plate 94 and the motor rotor 95 on the top to rise synchronously.

[0033] The connecting plate 91 is located on the left side of the movable frame 5, and the right side of the connecting plate 91 is fixedly connected to the left side of the movable frame 5. The output end of the third motor 96 is fixedly connected to the bottom of the placement plate 94.

[0034] The implementation principle of the automatic balancing device for motor rotors in this embodiment is as follows: First, the motor rotor 95 to be tested is placed stably on the placement plate 94. The second hydraulic rod 92 below the placement plate 94 is activated, causing it to extend upwards to drive the placement plate 94 and the motor rotor 95 on top to rise synchronously. Then, the first motor 2 is started, driving the lead screw 3 to rotate. Since the moving frame 5 is threadedly connected to the lead screw 3 and its bottom slides along the top groove of the base 1, the moving frame 5 will move smoothly laterally along the groove. The connecting frame 6 fixed on its right side will adjust its position accordingly until the distance between the moving frame 5 and the test frame 41 matches the rotor length. After alignment, the second hydraulic rod 92 is controlled to retract, causing the placement plate 94 and the motor rotor 95 to slowly descend, so that the two sides of the rotor are accurately placed on the rollers 45 inside the test frame 41 and the moving frame 5, ensuring that the rotor axis is consistent with the rotation axis of the rollers 45. Then, the connecting frame 6... The first hydraulic rod 7 at the top extends and retracts downward, pushing the test plate 8 at the bottom to slowly descend, pressing the rotor tightly and stably onto the roller 45 to prevent the rotor from shifting or jumping during rotation. After fixing, the second motor 42 is powered on and its output drives one of the fixed rollers 43 to rotate. Through the belt 44, the other two rollers 43 are driven to rotate synchronously and in the same direction, thereby driving the pressed motor rotor 95 to rotate as well, for subsequent balance testing. Then, the first hydraulic rod 7 is controlled to drive the test plate 8 to rise, and the second hydraulic rod 92 drives the placement plate 94 to rise, releasing the pressure and support on the rotor. Then, the third motor is started, and its output directly drives the placement plate 94 to rotate around the axis, driving the motor rotor 95 at the top to complete the two-sided swap. After the swap is in place, the steps of lowering and placing, fixing the plate, and driving the rotation are repeated to carry out the balance test on the other side of the rotor.

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An automatic rotor balancing device for an electric motor, characterized in that, The base includes a base (1), a first motor (2) is fixedly connected to the right side of the base (1), a lead screw (3) is fixedly connected to the output end of the first motor (2), a rotating mechanism (4) is provided on the top left side of the base (1), a movable frame (5) is threadedly connected to the surface of the lead screw (3), a connecting frame (6) is fixedly connected to the rear end of the movable frame (5), a first hydraulic rod (7) is fixedly connected to the top of the connecting frame (6), a test pressure plate (8) is fixedly connected to the telescopic end of the first hydraulic rod (7), and a lifting mechanism (9) is provided on the top of the base (1).

2. The automatic rotor balancing device for a motor as described in claim 1, characterized in that: The top of the base (1) is provided with a groove, and the bottom surface of the movable frame (5) is slidably connected to the groove on the top of the base (1).

3. The automatic rotor balancing device for a motor as described in claim 1, characterized in that: The rotating mechanism (4) includes a test frame (41), a second motor (42) is fixedly connected to the left side of the test frame (41), a rotating wheel (43) is fixedly connected to the output end of the second motor (42), a belt (44) is rotatably connected inside the rotating wheel (43), and a roller (45) is fixedly connected to the right side of the rotating wheel (43).

4. The automatic rotor balancing device for a motor as described in claim 3, characterized in that: The test frame (41) is located on top of the base (1), and the bottom of the test frame (41) is fixedly connected to the top of the base (1).

5. The automatic rotor balancing device for a motor as described in claim 3, characterized in that: The number of the rotating wheels (43) is set to three, and the three rotating wheels (43) are connected by a belt (44) for transmission. The rotating wheels (43) are rotatably connected to the inside of the test frame (41).

6. The automatic rotor balancing device for a motor as described in claim 1, characterized in that: The lifting mechanism (9) includes a connecting plate (91), a second hydraulic rod (92) is fixedly connected to the bottom of the inner wall of the connecting plate (91), a support plate (93) is fixedly connected to the telescopic end of the second hydraulic rod (92), a placement plate (94) is provided on the top of the support plate (93), a motor rotor (95) is provided on the top of the placement plate (94), and a third motor (96) is fixedly connected to the bottom of the support plate (93).

7. The automatic rotor balancing device for a motor as described in claim 6, characterized in that: The connecting plate (91) is located on the left side of the movable frame (5), and the right side of the connecting plate (91) is fixedly connected to the left side of the movable frame (5). The output end of the third motor (96) is fixedly connected to the bottom of the placement plate (94).

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