Motor rotor dynamic balance testing device

Abstract

The utility model belongs to the field of motor testing, and particularly relates to a dynamic balance testing device for a motor rotor, which solves the problems of low efficiency and poor stability in the prior art, and comprises a base and a plurality of detection plates, two supporting legs and a fixing block are fixedly connected to the top of the base through bolts, a fixing frame is welded to the top of the fixing block, a movable frame is welded to the top of a sliding seat, a testing frame is welded to the tops of the two supporting legs together, and a plurality of pressure sensors are installed on the testing frame. Through the arrangement of the large gear, the driving gears and other structures, the driving gears drive the large gear to rotate, then the three driving gears rotate synchronously, the three transmission rods move synchronously, the clamping time is saved, meanwhile, it can be guaranteed that the rotor is clamped and fixed to the center position, the working quality is guaranteed, and the working efficiency is improved.

Description

Technical Field

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

[0002] At present, the motor dynamic balancing test is a test method used to evaluate and adjust the balance performance of the motor rotor, aiming to reduce the vibration and noise generated by the motor during operation and improve the performance and reliability of the motor. When performing the motor dynamic balancing test, it is necessary to comply with relevant safety operating procedures. For example, the stator must be placed stably and firmly before the motor rotor is installed to prevent it from tipping over.

[0003] The prior art has an authorization announcement number of CN 218628805 U, and the utility model discloses a motor rotor dynamic balancing test device. Through the combination of T-slots, movable frames, movable plates and positioning screws, the position of the movable plates can be adjusted to adapt to shafts of different lengths and stably clamp the workpiece to be tested. The shaft can be clamped according to its diameter using a matching plate, an adjusting bolt and a clamping arc plate. The drive motor drives the connecting frame and the mounting cylinder to rotate, so that the rotor can rotate stably in the middle bracket, and the friction pad in contact with it is used to detect wear to evaluate the degree of balance. At the same time, the pressure sensor monitors the change in spring force to test the dynamic balance state of the rotor;

[0004] However, this patent fixes the rotor by rotating three adjusting bolts. When testing, it is time-consuming to rotate the three adjusting bolts separately, and it is difficult to ensure that the rotor is clamped in the center position. The efficiency is low and the detection accuracy is poor. Utility Model Content

[0005] The utility model aims to provide a motor rotor dynamic balance test device to solve the problems of low efficiency and poor stability.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor rotor dynamic balancing test device, comprising a base and a plurality of detection plates, the top of the base is slidably equipped with a sliding seat, the top of the base is fixedly connected with two support legs and a fixed block by bolts, the top of the fixed block is welded with a fixed frame, the top of the sliding seat is welded with a mobile frame, the tops of the two support legs are jointly welded with a test frame, a plurality of pressure sensors are installed on the test frame, the pressure sensor and the detection plate are jointly fixedly connected with a detection spring, one side of the detection plate is fixedly connected with a friction pad, the top of the base is fixedly connected with a support seat by bolts, the top of the support seat is installed with a driving motor, and the fixed frame and the mobile frame are both provided with a clamping device;

[0007] The clamping device includes a large gear, three rotating shafts, three driving gears, three transmission rods, three clamping plates, three rack plates, and three clamping screws. The two large gears are rotatably installed in the fixed frame and the movable frame respectively, the six rotating shafts are rotatably installed in the fixed frame and the movable frame respectively, the six transmission rods are slidably assembled in the fixed frame and the movable frame respectively, the six clamping screws are rotatably installed in the fixed frame and the movable frame respectively, one side of the clamping plate is fixedly connected to one side of the transmission rod, the driving gear is fixedly sleeved on the outer circumferential surface of the rotating shaft, the rack plate and one side of the transmission rod are jointly fixedly connected with a connecting rod, and the transmission rod is threadedly sleeved on the outer circumferential surface of the clamping screw.

[0008] Preferably, four fixing seats are welded to the bottom of the base, support screws are rotatably mounted on the internal threads of the fixing seats, and a support plate is welded to the bottom of the support screws.

[0009] Preferably, an annular groove is formed on both the fixed frame and the movable frame, and the large gear is rotatably mounted inside the annular groove.

[0010] Preferably, a clamping thread groove is formed on the transmission rod, and the clamping screw is threadably connected to the inside of the clamping thread groove.

[0011] Preferably, three slide grooves are provided on the fixed frame and the movable frame, the transmission rod is slidably connected inside the slide grooves, the large gear is meshed with the driving gear, and the rack plate is meshed with the driving gear.

[0012] Preferably, a supporting thread groove is formed on the fixing seat, and the supporting screw is threadably connected inside the supporting thread groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model adopts the arrangement of structures such as a large gear and a driving gear. The driving gear drives the large gear to rotate, thereby making the three driving gears rotate synchronously, and the three transmission rods move synchronously, saving clamping time, and also ensuring that the rotor is clamped and fixed in the center position, thereby ensuring work quality and improving work efficiency.

[0015] 2. The utility model arranges structures such as support screws and support plates. The support screws are rotated to move the support plates, thereby adjusting the height of the base. At the same time, the four support plates are adjusted separately, so that the support plates can support different heights, thereby ensuring that the base is still level when used on an uneven surface, thereby ensuring stable operation of the detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the large gear and the clamping plate of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the fixing seat of the utility model.

[0019] In the figure: 1. base; 2. fixed frame; 3. mobile frame; 4. test frame; 5. sliding seat; 6. pressure sensor; 7. detection spring; 8. detection plate; 9. support plate; 10. support seat; 11. driving motor; 12. large gear; 13. rotating shaft; 14. driving gear; 15. rack plate; 16. clamping plate; 17. clamping screw; 18. transmission rod; 19. fixed seat; 20. supporting screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3A motor rotor dynamic balancing test device comprises a base 1 and several detection plates 8. The top of the base 1 is slidably equipped with a sliding seat 5. The top of the base 1 is fixedly connected with two support legs and a fixed block by bolts. A fixed frame 2 is welded on the top of the fixed block. A mobile frame 3 is welded on the top of the sliding seat 5. A test frame 4 is welded on the tops of the two support legs. Several pressure sensors 6 are installed on the test frame 4. A detection spring 7 is fixedly connected to the pressure sensor 6 and the detection plate 8. A friction pad is fixedly connected to one side of the detection plate 8. The top of the base 1 is fixedly connected with a support seat 10 by bolts. A driving motor 11 is installed on the top of the support seat 10. A clamping device is provided on both the fixed frame 2 and the mobile frame 3. The clamping device comprises a large gear 12, three rotating shafts 13, three driving gears 14, three transmission rods 18, three clamping plates 16, three rack plates 15, three clamping screws 17, two large gears 12 are rotatably mounted inside the fixed frame 2 and the mobile frame 3 respectively, the six rotating shafts 13 are rotatably mounted inside the fixed frame 2 and the mobile frame 3 respectively, the six transmission rods 18 are slidably assembled inside the fixed frame 2 and the mobile frame 3 respectively, the six clamping screws 17 are rotatably mounted inside the fixed frame 2 and the mobile frame 3 respectively, one side of the clamping plate 16 is fixedly connected to one side of the transmission rod 18, the driving gear 14 is fixedly sleeved on the outer circumferential surface of the rotating shaft 13, the rack plate 15 and one side of the transmission rod 18 are jointly fixedly connected with a connecting rod, and the transmission rod 18 is threadedly sleeved on the outer circumferential surface of the clamping screw 17. Through the arrangement of the large gear 12, the driving gear 14 and other structures, the driving gear 14 drives the large gear 12 to rotate, and then the three driving gears 14 rotate synchronously, so that the three transmission rods 18 move synchronously, saving clamping time, and at the same time ensuring that the rotor is clamped and fixed at the center position, ensuring work quality, and improving work efficiency.

[0022] See also Figure 1-3 Four fixing seats 19 are welded at the bottom of the base 1, and a support screw 20 is rotatably installed on the internal thread of the fixing seat 19. A support plate 9 is welded at the bottom of the support screw 20. Through the arrangement of the support screw 20, the support plate 9 and other structures, the support screw 20 is rotated to move the support plate 9, so that the height of the base 1 can be adjusted. At the same time, the four support plates 9 are adjusted separately, so that the support plates 9 can support different heights, so as to ensure that the base 1 is still level when used on an uneven plane, and ensure the stable operation of the detection work.

[0023] See also Figure 1-3, an annular groove is provided on the fixed frame 2 and the movable frame 3, the large gear 12 is rotatably installed inside the annular groove, a clamping thread groove is provided on the transmission rod 18, and the clamping screw 17 is threadedly connected inside the clamping thread groove, three slide grooves are provided on the fixed frame 2 and the movable frame 3, the transmission rod 18 is slidably connected inside the slide groove, the large gear 12 is meshed with the driving gear 14, the rack plate 15 is meshed with the driving gear 14, a supporting thread groove is provided on the fixed seat 19, and the supporting screw 20 is threadedly connected inside the supporting thread groove.

[0024] The specific implementation process of the utility model is as follows: according to the different lengths of the rotor shaft body, the position of the sliding seat 5 is changed and the positioning screw is used to position the sliding seat 5, driving the mobile frame 3 to be in the corresponding position to adapt to the length of the shaft body to ensure stable load-bearing and clamping thereof, the rotor and the shaft body pass through the mobile frame 3, the test frame 4 and the fixed frame 2 in sequence, and are fixed on the output shaft of the driving motor 117, and are clamped by the clamping plate 16 at the same time, and rotated under the action of the clamping plate 16, and the friction degree of the friction pad is observed after the rotation is completed, and the dynamic balance state of the rotor is intuitively obtained, and the pressure sensor 6 under the test spring is connected to the data processor installed on the base 1, and the initial force data is compared with the force data of the pressure sensor 6 during the rotation of the rotor, so that the test of the dynamic balance state is more accurate;

[0025] Further, the clamping screw 17 is rotated, the clamping screw 17 drives the transmission rod 18 to move, the transmission rod 18 drives the rack plate 15 to move through the connecting rod, the rack plate 15 moves so that the driving gear 14 rotates, the driving gear 14 drives the large gear 12 to rotate, the large gear 12 makes the other two driving gears 14 rotate synchronously, and then makes the other two rack plates 15 move synchronously, that is, the three transmission rods 18 move synchronously, driving the three clamping plates 16 to move synchronously, so as to clamp the rotor shaft;

[0026] Specifically, rotating the support plate 9 drives the support screw 20 to rotate. Due to the threaded advancement principle of the support thread groove and the support screw 20, the support screw 20 rotates and moves at the same time. The separate adjustment of the four support plates 9 can achieve the leveling of the base 1 and ensure the stability of the device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor rotor dynamic balancing test device, comprising a base (1) and a plurality of detection plates (8), characterized in that: The top of the base (1) is slidably equipped with a sliding seat (5), the top of the base (1) is fixedly connected to two supporting legs and a fixed block by bolts, the top of the fixed block is welded with a fixed frame (2), the top of the sliding seat (5) is welded with a moving frame (3), the tops of the two supporting legs are welded with a test frame (4), a plurality of pressure sensors (6) are installed on the test frame (4), the pressure sensors (6) and the detection plate (8) are fixedly connected with a detection spring (7), one side of the detection plate (8) is fixedly connected with a friction pad, the top of the base (1) is fixedly connected to a support seat (10) by bolts, the top of the support seat (10) is installed with a driving motor (11), and the fixed frame (2) and the moving frame (3) are both provided with a clamping device; The clamping device comprises a large gear (12), three rotating shafts (13), three driving gears (14), three transmission rods (18), three clamping plates (16), three rack plates (15), and three clamping screws (17); the two large gears (12) are rotatably mounted inside the fixed frame (2) and the movable frame (3), respectively; the six rotating shafts (13) are rotatably mounted inside the fixed frame (2) and the movable frame (3), respectively; the six transmission rods (18) are slidably mounted on the fixed frame (2) and the movable frame (3), respectively; (2) and the inside of the movable frame (3), the six clamping screws (17) are rotatably installed in the inside of the fixed frame (2) and the movable frame (3), one side of the clamping plate (16) is fixedly connected to one side of the transmission rod (18), the driving gear (14) is fixedly sleeved on the outer peripheral surface of the rotating shaft (13), the rack plate (15) and one side of the transmission rod (18) are commonly fixedly connected with a connecting rod, and the transmission rod (18) is threadedly sleeved on the outer peripheral surface of the clamping screw (17).

2. A motor rotor dynamic balancing test device according to claim 1, characterized in that: Four fixing seats (19) are welded to the bottom of the base (1), a support screw (20) is rotatably mounted on the internal thread of the fixing seat (19), and a support plate (9) is welded to the bottom of the support screw (20).

3. The motor rotor dynamic balancing test device according to claim 1, characterized in that: The fixed frame (2) and the movable frame (3) are both provided with an annular groove, and the large gear (12) is rotatably mounted inside the annular groove.

4. The motor rotor dynamic balancing test device according to claim 1, characterized in that: The transmission rod (18) is provided with a clamping thread groove, and the clamping screw rod (17) is threadedly connected inside the clamping thread groove.

5. The motor rotor dynamic balancing test device according to claim 1, characterized in that: The fixed frame (2) and the movable frame (3) are both provided with three slide grooves, the transmission rod (18) is slidably connected inside the slide grooves, the large gear (12) and the driving gear (14) are meshed, and the rack plate (15) and the driving gear (14) are meshed.

6. The motor rotor dynamic balancing test device according to claim 2, characterized in that: The fixing seat (19) is provided with a supporting thread groove, and the supporting screw rod (20) is threadedly connected inside the supporting thread groove.

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