A high-speed rotor dynamic balancing adjusting device
By using a fixed component and an adjustable movable seat design for worm gear drive, the problem of unstable fixation in high-speed rotor dynamic balance adjustment is solved, achieving rotor stability and adaptability, and improving the reliability and accuracy of adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN ELECTRIC MACHINERY FACTORY (ZHENJIANG) CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-14
AI Technical Summary
In the process of dynamic balancing adjustment, existing high-speed rotors rely on springs for fixation, which leads to unstable fixed positions and makes it impossible to guarantee the stability and reliability of the rotor.
The fixed assembly employs a worm gear drive system. The worm gear drives the worm wheel, which in turn drives the rotating shaft, which in turn drives the rotating wheel. This achieves the self-locking retraction and fixation of the rotor by the fixed plate. Combined with the adjustable movable seat and support wheel design, the stability and adaptability of the rotor during the adjustment process are ensured.
It improves the stability and reliability of rotor dynamic balance adjustment, adapts to rotors of different sizes and shapes, reduces frictional resistance, and ensures detection accuracy and equipment safety.
Smart Images
Figure CN224499794U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rotor technology, specifically a high-speed rotor dynamic balancing adjustment device. Background Technology
[0002] High-speed rotors are core components of high-end equipment such as aero-engines, gas turbines, and centrifugal compressors, and their operational stability directly determines the performance, lifespan, and reliability of the entire machine. Mass imbalances in rotors caused by factors such as material inhomogeneity, assembly errors, and thermal deformation are the main causes of increased vibration and noise, and even catastrophic failures. Therefore, dynamic balancing technology is an indispensable key element in ensuring the safe and stable operation of high-speed rotors.
[0003] A search revealed a patent, CN218411547U, for example, a rotor dynamic balancing online adjustment device. This device includes a worktable with symmetrically fixed support frames on its upper surface. Support wheels are mounted on the outer surfaces of both support frames, and a rotor body is positioned between the outer surfaces of the two support wheels. In this invention, turning the crank can adjust the position of the sliding seat by adjusting the position of the sliding seat via a lead screw. The connection between the slider and the limiting groove, along with the first limiting rod, limits the sliding seat's movement, improving stability. An infrared positioning light assists in positioning the rotating seat and the shaft, ensuring alignment of the center. Pulling the pull plate allows the rotor to be clamped and fixed using a fixed plate through the spring's contraction and rebound. The rotating seat directly fixes the rotor end face, driving rotation. This adjustment device can adapt to irregularly shaped rotors for dynamic balancing, enhancing its practicality.
[0004] Currently, when performing dynamic balancing on high-speed rotors, the rotor is fixed only by a spring-driven fixing plate. However, high-speed rotors themselves vibrate during dynamic balancing, and springs, being elastic elements, possess flexible characteristics. Relying solely on a spring-driven fixing plate to fix the rotor results in repeated expansion and contraction of the spring under the influence of rotor vibration. This leads to unstable contact pressure between the fixing plate and the rotor, causing fluctuations in the rotor's fixed position and making it impossible to guarantee stable fixing of the rotor during the adjustment process. Utility Model Content
[0005] The purpose of this invention is to provide a high-speed rotor dynamic balancing adjustment device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-speed rotor dynamic balancing adjustment device, comprising a worktable, a base and a fixed seat fixedly installed on the top of the worktable, the fixed seat being disposed on both sides of the base, a first movable seat and a second movable seat being slidably installed inside the two fixed seats respectively, a support wheel being installed on the top of the first movable seat, an mounting plate being installed on the top of the second movable seat, and a fixing component being disposed on one side of the mounting plate;
[0007] The fixing assembly includes a rotating seat fixedly installed on one side of the mounting plate. The rotating seat has fixing plates evenly distributed in a circular array inside. One end of the fixing plate is fixedly connected to a slider. The slider is slidably installed on the inner wall of the slide groove. The slide groove is opened inside the rotating wheel. The rotating wheel is rotatably installed inside the mounting plate through the rotating assembly.
[0008] As a further preferred embodiment of this technical solution, the fixed plate and the rotating seat are slidably connected by a limiting shaft.
[0009] As a further preferred embodiment of this technical solution, the rotating assembly includes a rotating shaft fixedly installed on one side of the rotating wheel, a worm gear fixedly installed on the outer wall of the rotating shaft, a worm engaged with one side of the worm gear, and a rotating block fixedly installed at the top end of the worm.
[0010] When the rotor is fixed, rotating the rotating block drives the worm to rotate, the rotation of the worm drives the rotation of the worm wheel, the rotation of the worm wheel drives the rotation of the rotating shaft, and the rotation of the rotating shaft drives the rotating wheel to rotate, thereby causing several fixing plates to retract inward to fix the rotor. The fixing components have self-locking properties through the worm-driven worm wheel transmission, which can improve the stability and reliability of the rotor dynamic balance adjustment.
[0011] As a further preferred embodiment of this technical solution, the inner walls of both the first movable seat and the second movable seat are threadedly connected with first threaded rods, the bottom ends of the two first threaded rods are rotatably mounted inside the worktable, and a motor is installed at the bottom end of the first threaded rod.
[0012] As a further preferred embodiment of this technical solution, the two first threaded rods are connected by a pulley system.
[0013] As a further preferred embodiment of this technical solution, the inner wall of the mounting plate is threadedly connected to a second threaded rod, and the bottom of the second threaded rod is rotatably mounted inside the second movable seat.
[0014] When fixing the irregularly shaped rotor, the mounting plate can be moved to the top of the second movable seat by rotating the second threaded rod, thereby raising the position of the rotating seat, which facilitates fixing the irregularly shaped rotor and further improves the adaptability of the device.
[0015] As a further preferred embodiment of this technical solution, the base is internally equipped with rollers that are evenly distributed.
[0016] This invention provides a high-speed rotor dynamic balancing adjustment device, which has the following beneficial effects:
[0017] (1) By setting up a fixing component, when the rotor is dynamically balanced, the rotor is first placed on the top of the base, with one end placed on the top of the support wheel and the other end embedded in the rotating seat. Then, the rotating component drives the rotating wheel to rotate. When the rotating wheel rotates, the slider slides through the guide groove. The movement of the slider drives the movement of the fixing plate, causing several fixing plates to retract inward and fix it. Finally, the support wheel drives the rotor to rotate, thus realizing the adjustment of the rotor's dynamic balance. The device can ensure the stability of the rotor during the adjustment process through the above-mentioned fixing method.
[0018] (2) By setting up a rotating component, when the rotor is fixed, the rotating block drives the worm to rotate, the rotation of the worm drives the rotation of the worm wheel, the rotation of the worm wheel drives the rotation of the rotating shaft, and the rotation of the rotating shaft drives the rotating wheel to rotate, thereby driving several fixing plates to retract inward to fix the rotor. The fixing component has self-locking property through the worm-driven worm wheel transmission method, which can improve the stability and reliability of the rotor dynamic balance adjustment. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;
[0021] Figure 3 This is a schematic cross-sectional view of the mounting plate of this utility model.
[0022] Figure 4 This is a schematic diagram of the rotating wheel structure of this utility model.
[0023] In the diagram: 1. Workbench; 2. Base; 3. Fixed seat; 4. First movable seat; 5. Support wheel; 6. Second movable seat; 7. First threaded rod; 8. Motor; 9. Pulley assembly; 10. Mounting plate; 11. Rotating seat; 12. Second threaded rod; 13. Fixed plate; 14. Slider; 15. Slide groove; 16. Rotating wheel; 17. Rotating shaft; 18. Worm gear; 19. Worm; 20. Rotating block; 21. Roller. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0025] This utility model provides a technical solution: such as Figures 1 to 4 As shown, in this embodiment, a high-speed rotor dynamic balance adjustment device includes a workbench 1. A base 2 and a fixed seat 3 are fixedly installed on the top of the workbench 1. The fixed seat 3 is arranged on both sides of the base 2. A first movable seat 4 and a second movable seat 6 are slidably installed inside the two fixed seats 3 respectively. A support wheel 5 is installed on the top of the first movable seat 4. An installation plate 10 is installed on the top of the second movable seat 6. A fixing component is provided on one side of the installation plate 10.
[0026] The fixing assembly includes a rotating seat 11 fixedly installed on one side of the mounting plate 10. The interior of the rotating seat 11 has a ring array of evenly distributed fixing plates 13. One end of the fixing plate 13 is fixedly connected to a slider 14. The slider 14 is slidably installed on the inner wall of the slide groove 15. The slide groove 15 is opened inside the rotating wheel 16. The rotating wheel 16 is rotatably installed inside the mounting plate 10 through the rotating assembly.
[0027] The existing patent CN218411547U discloses an online rotor dynamic balancing adjustment device. This patent discloses the workbench 1, support wheel 5 and rotating seat 11 proposed in this application. The technical means will not be described in detail here.
[0028] By setting the fixed components, when the rotor is dynamically balanced, the rotor is first placed on the top of the base 2, with one end placed on the top of the support wheel 5 and the other end embedded in the rotating seat 11.
[0029] Then, the rotating assembly drives the rotating wheel 16 to rotate. When the rotating wheel 16 rotates, it is guided by the slide groove 15 to make the slider 14 slide. The movement of the slider 14 drives the movement of the fixed plate 13, causing several fixed plates 13 to retract inward and fix it.
[0030] Finally, the rotor is driven to rotate by the support wheel 5, thereby achieving the adjustment of the rotor's dynamic balance.
[0031] This device ensures the stability of the rotor during the adjustment process through the aforementioned fixing method.
[0032] like Figure 3 and Figure 4 As shown, the fixed plate 13 and the rotating seat 11 are slidably connected by a limiting shaft.
[0033] like Figures 1 to 4 As shown, the rotating assembly includes a rotating shaft 17 fixedly installed on one side of the rotating wheel 16, a worm gear 18 fixedly installed on the outer wall of the rotating shaft 17, a worm 19 meshing with one side of the worm gear 18, and a rotating block 20 fixedly installed at the top of the worm 19.
[0034] By setting up the rotating assembly, when the rotor is fixed, rotating the rotating block 20 drives the worm 19 to rotate, the rotation of the worm 19 drives the rotation of the worm wheel 18, the rotation of the worm wheel 18 drives the rotation of the rotating shaft 17, and the rotation of the rotating shaft 17 drives the rotating wheel 16 to rotate, thereby causing several fixing plates 13 to retract inward to fix the rotor. The fixing assembly has self-locking properties through the transmission method of the worm 19 driving the worm wheel 18, which can improve the stability and reliability of the rotor dynamic balance adjustment.
[0035] like Figures 1 to 4 As shown, the inner walls of the first movable seat 4 and the second movable seat 6 are both threadedly connected to the first threaded rod 7. The bottom ends of the two first threaded rods 7 are rotatably installed inside the worktable 1, and a motor 8 is installed at the bottom end of the first threaded rod 7.
[0036] When fixing the rotor, the first threaded rod 7 can be driven to rotate by the motor 8. The rotation of the first threaded rod 7 drives the first moving seat 4 or the second moving seat 6 to move within the fixed seat 3, thereby causing the support wheel 5 and the rotating seat 11 to move upward, which facilitates the fixing of rotors of different sizes and improves the adaptability of the device.
[0037] like Figure 2 As shown, the two first threaded rods 7 are connected by a pulley set 9.
[0038] The two first threaded rods 7 are driven synchronously by only one power source through the transmission of the pulley group 9.
[0039] like Figure 3 As shown, the inner wall of the mounting plate 10 is threaded with a second threaded rod 12, and the bottom of the second threaded rod 12 is rotatably mounted inside the second movable seat 6.
[0040] When fixing the irregular rotor, the mounting plate 10 can be moved to the top of the second movable seat 6 by rotating the second threaded rod 12, thereby raising the position of the rotating seat 11, which facilitates fixing the irregular rotor and further improves the adaptability of the device.
[0041] like Figure 2 As shown, rollers 21 are rotatably mounted inside the base 2, and the rollers 21 are evenly distributed.
[0042] Roller 21 replaces sliding friction with rolling friction, significantly reducing the resistance during rotor rotation. In dynamic balancing, the rotor needs to rotate at different speeds (including low speed) to detect imbalance. The low-friction design ensures that the motor or drive unit can easily drive the rotor, avoiding detection errors or equipment overload due to excessive resistance.
[0043] This utility model provides a high-speed rotor dynamic balancing adjustment device, the specific working principle of which is as follows:
[0044] When the rotor is dynamically balanced, the height of the first moving seat 4 or the second moving seat 6 is first adjusted according to the size of the rotor. The first threaded rod 7 can be driven to rotate by the motor 8. The rotation of the first threaded rod 7 drives the first moving seat 4 or the second moving seat 6 to move within the fixed seat 3, thereby causing the support wheel 5 and the rotating seat 11 to move upward.
[0045] Then, you can choose whether to raise the mounting plate 10 separately. You can move the mounting plate 10 to the top of the second movable seat 6 by rotating the second threaded rod 12, thereby raising the position of the rotating seat 11.
[0046] Then the rotor is placed on the top of the base 2, with one end resting on the top of the support wheel 5 and the other end embedded in the rotating seat 11;
[0047] Then, rotating the rotating block 20 drives the worm 19 to rotate, the rotation of the worm 19 drives the rotation of the worm wheel 18, the rotation of the worm wheel 18 drives the rotation of the rotating shaft 17, the rotation of the rotating shaft 17 drives the rotating wheel 16 to rotate, and when the rotating wheel 16 rotates, it is guided by the slide groove 15 to make the slider 14 slide. The movement of the slider 14 drives the movement of the fixed plate 13, causing several fixed plates 13 to retract inward and fix it.
[0048] Finally, the rotor is driven to rotate by the support wheel 5 to adjust the rotor's dynamic balance.
[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-speed rotor dynamic balancing device, comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly installed with a base (2) and a fixed seat (3). The fixed seat (3) is set on both sides of the base (2). The two fixed seats (3) are respectively slidably installed with a first movable seat (4) and a second movable seat (6). The top of the first movable seat (4) is equipped with a support wheel (5). The top of the second movable seat (6) is equipped with a mounting plate (10). A fixing component is provided on one side of the mounting plate (10). The fixing assembly includes a rotating seat (11) fixedly installed on one side of the mounting plate (10). The rotating seat (11) has fixing plates (13) evenly distributed in a ring array inside. One end of the fixing plate (13) is fixedly connected to a slider (14). The slider (14) is slidably installed on the inner wall of the slide groove (15). The slide groove (15) is opened inside the rotating wheel (16). The rotating wheel (16) is rotatably installed inside the mounting plate (10) through the rotating assembly.
2. The high-speed rotor dynamic balancing device according to claim 1, characterized in that: The fixed plate (13) and the rotating seat (11) are slidably connected by a limiting shaft.
3. The high-speed rotor dynamic balancing device according to claim 1, characterized in that: The rotating assembly includes a rotating shaft (17) fixedly installed on one side of the rotating wheel (16), a worm gear (18) fixedly installed on the outer wall of the rotating shaft (17), a worm (19) meshing with one side of the worm gear (18), and a rotating block (20) fixedly installed at the top of the worm (19).
4. The high-speed rotor dynamic balancing device according to claim 1, characterized in that: The inner walls of the first movable seat (4) and the second movable seat (6) are both threaded with a first threaded rod (7). The bottom ends of the two first threaded rods (7) are rotatably installed inside the worktable (1). A motor (8) is installed at the bottom end of the first threaded rod (7).
5. A high-speed rotor dynamic balancing adjustment device according to claim 4, characterized in that: The two first threaded rods (7) are connected by a pulley set (9).
6. The high-speed rotor dynamic balancing device according to claim 1, characterized in that: The inner wall of the mounting plate (10) is threaded with a second threaded rod (12), and the bottom of the second threaded rod (12) is rotatably mounted inside the second movable seat (6).
7. A high-speed rotor dynamic balancing adjustment device according to claim 1, characterized in that: The base (2) is equipped with rotatable rollers (21), which are evenly distributed.