Long-shaft rotor dynamic balance test de-weight all-in-one machine and test de-weight method

Abstract

The invention discloses a long-shaft rotor dynamic balance testing and de-weighting all-in-one machine and method, and relates to the technical field of rotating machinery dynamic balance correction. The all-in-one machine comprises a machine table, a dynamic balance testing device, a weight removing device and a jacking mechanism. The dynamic balance testing device is provided with a belt driving mechanism capable of swinging and pressing down and a supporting mechanism with adjustable height and distance, and is used for driving and supporting the long-shaft rotor to rotate so as to complete a dynamic balance test. And the de-weight device is provided with a clamping mechanism for fixing the rotor and a drilling mechanism capable of accurately positioning, and is used for executing de-weight processing. The jacking mechanism is arranged between the testing device and the weight removing device and used for automatically transferring the rotor from the supporting mechanism to the clamping mechanism after testing is completed. By integrating testing and de-weighting functions and utilizing the jacking mechanism to realize automatic transfer between stations, the problems of strenuous carrying, low efficiency and non-uniform benchmark of the long-shaft rotor in the traditional separation process are solved, full-process automation is realized, and the production efficiency and the correction precision are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of dynamic balancing correction technology for rotating machinery, and in particular to an integrated machine for dynamic balancing testing and weight removal of a long-shaft rotor and a method for testing and weight removal. Background Technology

[0002] Dynamic balancing testing and calibration are key processes in the manufacturing and maintenance of rotating machinery. Their purpose is to eliminate centrifugal forces generated by uneven mass distribution in the rotor, thereby reducing vibration and noise during equipment operation and extending the service life of the machinery. For long-shaft rotors, which have a large length-to-diameter ratio and weight, higher requirements are placed on the accuracy of dynamic balancing and the calibration process.

[0003] In existing technologies, the dynamic balancing test and weight removal correction of long-shaft rotors are usually completed in two separate stages at two independent workstations. A typical process flow is as follows: First, the long-shaft rotor is hoisted onto the support frame of the dynamic balancing testing machine and driven to rotate. Sensors measure the magnitude and phase of its imbalance. After the test, the operator needs to unload the rotor from the testing machine and transport it to another physically separate weight removal workstation using a crane, forklift, or manually. Then, at the weight removal workstation, the rotor is re-clamped and positioned. Based on the test report, the phase point is manually or semi-automatically located, and drilling or milling is performed to remove material, achieving balance correction.

[0004] This separate process has several drawbacks: the long-shaft rotor itself is heavy and bulky, and the multiple hoisting, handling, and transfer between different workstations is not only time-consuming and labor-intensive, increasing labor intensity and operational risks, but also restricts overall production efficiency. Multiple clamping operations make it difficult to ensure complete consistency between the testing and machining benchmarks, potentially introducing secondary positioning errors and affecting the final calibration accuracy. Furthermore, the separation of processes leads to production interruptions, increasing equipment and personnel waiting time, and making continuous, automated assembly line operations difficult. Therefore, for the dynamic balancing of long-shaft rotors, an integrated solution is needed that can combine testing and calibration functions, reduce intermediate handling steps, and improve the degree of automation and accuracy of the operation. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a long-shaft rotor dynamic balancing test and de-weighting integrated machine, comprising a machine base; a dynamic balancing test device mounted on the machine base for driving and supporting the rotation of the long-shaft rotor to perform dynamic balancing tests; a de-weighting device mounted on the machine base for de-weighting the tested long-shaft rotor; and a lifting mechanism disposed between the dynamic balancing test device and the de-weighting device for transferring the tested long-shaft rotor from the dynamic balancing test device to the processing station of the de-weighting device.

[0006] Compared with existing technologies, by adopting the above technical solution, the traditionally separate testing and de-weighing stations are integrated into the same equipment, and the automatic connection and workpiece transfer between the two are realized through the lifting mechanism. This fundamentally eliminates the handling link of the long shaft rotor between processes, and improves production efficiency and automation level.

[0007] Furthermore, the dynamic balancing testing device includes a support mechanism and a first drive mechanism. The support mechanism is mounted on the machine base to support the long-shaft rotor, and the first drive mechanism is used to drive the supported rotor to rotate. A lifting mechanism is used to lift and transfer the rotor from the support mechanism.

[0008] Compared with existing technologies, by adopting the above technical solution, the support mechanism provides a stable benchmark for testing, the first drive mechanism provides rotational power, and the two work together to complete the test, while the lifting mechanism realizes a seamless transition from the testing station to the processing station.

[0009] Furthermore, the first drive mechanism includes a drive source, a drive belt, a swing arm assembly, and at least one output pulley. The output pulley is mounted on the swing arm and engages with the drive belt, and the swing arm can swing to press or disengage the drive belt from the surface of the long shaft rotor to drive its rotation or stop.

[0010] Compared with existing technologies, by adopting the above technical solution, the contact state between the transmission belt and the rotor is controlled by a swingable swing arm assembly, which realizes rapid switching between driving and separation, and the structure is simple and reliable.

[0011] Furthermore, the support mechanism includes at least one set of support rollers for supporting the long shaft rotor, and an adjustment assembly for adjusting the height of the support rollers.

[0012] Compared with existing technologies, by adopting the above technical solution, the support roller provides low-resistance rotational support for the rotor, while the adjustable height design allows the equipment to adapt to rotors of different diameters, ensuring that the drive belt has appropriate contact and transmission effects, thus enhancing the versatility of the equipment.

[0013] Furthermore, the support mechanism also includes an abutment component, which includes an abutment roller that can abut against the axial end face of the long shaft rotor to limit the axial movement of the long shaft rotor.

[0014] Compared with existing technologies, by adopting the above technical solution, the abutment rollers provide axial constraints from both ends of the rotor, effectively preventing axial displacement caused by external forces during rotation testing or processing, and ensuring the stability of dynamic balance testing and the positioning accuracy of drilling and weight removal.

[0015] Furthermore, the weight-removing device includes a clamping mechanism and a drilling mechanism. The clamping mechanism is used to fix the long-shaft rotor during processing, and the drilling mechanism is used to drill holes in the rotor to remove weight. A lifting mechanism transfers the rotor into the clamping mechanism.

[0016] Compared with existing technologies, by adopting the above technical solution, the clamping mechanism ensures the rigid fixation of the workpiece during processing, the drilling mechanism performs precise weight removal, and the two work together with the lifting mechanism to complete the entire process from receiving to processing without manual intervention.

[0017] Furthermore, the clamping mechanism includes a support structure disposed on the lifting mechanism, and a pressing mechanism disposed opposite to the support structure. The support structure is used to support the long-shaft rotor, and the pressing mechanism is used to press the rotor onto the support structure.

[0018] Compared with existing technologies, by adopting the above technical solution, an automatic clamping solution is formed by combining the lifting action of the lifting mechanism with the pressing action of the pressing mechanism. The solution has a compact structure and stable clamping force.

[0019] Furthermore, the drilling mechanism includes a drill bit and a drive module. The drive module is used to drive the drill bit to the target de-point position of the long-shaft rotor.

[0020] Compared with existing technologies, by adopting the above technical solution, the drive module can realize the positioning of the drill bit in multiple dimensions and can automatically move the drill bit to the unbalance point according to the dynamic balance test results, thereby realizing automated weight removal processing.

[0021] Furthermore, the drilling mechanism also includes a suction pipe linked to the drill bit, and an industrial vacuum cleaner connected to the suction pipe.

[0022] Compared with existing technologies, by adopting the above technical solution, while drilling to remove weight, the generated metal debris is removed in real time by using a suction pipe and an industrial vacuum cleaner, thus maintaining a clean working environment and improving operational safety.

[0023] A method for removing weight during dynamic balancing testing of a long-shaft rotor, applied to the aforementioned integrated machine, includes: placing the long-shaft rotor on a dynamic balancing testing device for testing; after the test is completed, transferring the rotor from the dynamic balancing testing device to a weight removal device via a lifting mechanism; and performing weight removal processing on the rotor via the weight removal device.

[0024] Compared with existing technologies, by adopting the above technical solution, this method integrates testing, transfer, and processing into a continuous automated process with simple steps, reduced manual intervention and workpiece turnaround time, and is suitable for mass production.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By integrating the dynamic balancing test device, the weight removal device and the automatic transfer lifting mechanism into one unit, the entire process of testing and calibration of the long shaft rotor is automated, avoiding the handling of workpieces between processes, improving production efficiency and reducing labor intensity.

[0026] 2. The support mechanism adopts height-adjustable support rollers and axially limiting abutment rollers, combined with a swing-down belt drive, which not only ensures the stability and accuracy of rotor rotation during testing, but also provides adaptability to rotors of different specifications.

[0027] 3. The weight-removing device uses the lifting mechanism and the pressing mechanism to automatically clamp the weight, and the drilling mechanism with precise positioning performs the weight removal, realizing the unification of the test benchmark and the processing benchmark, and ensuring the accuracy of dynamic balance correction. Attached Figure Description

[0028] Figure 1 It is a 3D view of the all-in-one machine, mainly showing the overall structure; Figure 2 The main exhibit showcases the overall structure of the dynamic balancing device and the weight-reducing device; Figure 3 The main focus is on showcasing the overall structure of the dynamic balancing device; Figure 4 It is a three-dimensional view of the dynamic balancing device from another perspective, mainly showing its specific structure; Figure 5 This is a partial view of the dynamic balancing device, mainly showing the first drive mechanism and the support mechanism; Figure 6 This is a partial view of the dynamic balancing device, mainly showing the specific structure of the support mechanism; Figure 7 The main focus is on showcasing the second adjustment component; Figure 8 It is a three-dimensional view of the weight-reducing device, mainly showing its specific structure; Figure 9 The main exhibit is the drilling mechanism.

[0029] Explanation of reference numerals in the attached drawings: 11. First motor; 111. Power pulley; 112. Driven pulley; 113. Tensioner pulley; 114. First adjusting cylinder; 115. Sliding pair; 116. Mounting plate; 117. First output pulley; 118. Second output pulley; 119. Transmission belt; 21. First cylinder; 211. Swing arm; 222. Swing drive cylinder; 223. Swing connector; 224. First rotating shaft; 31 31. Moving plate; 32. Abutting roller; 33. Supporting roller; 34. Second adjusting cylinder; 35. Adjusting plate; 36. Slide plate; 37. Locking component; 50. Machine base; 501. Chain drive module; 61. Support plate; 62. Support platform; 63. Lifting cylinder; 64. Lifting platform; 71. Lowering plate; 72. Lowering cylinder; 73. Second rotating shaft; 74. Drill bit; 75. Drive module; 8. Industrial vacuum cleaner. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] The embodiments illustrated in the accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of protection of this application. Other implementation methods obtained by those skilled in the art based on the described embodiments without inventive effort are all within the scope of protection of this application.

[0032] This embodiment uses a long-shaft rotor as the processing object to illustrate the working process and structural coordination of the integrated machine. Its core concept lies in integrating two independent processes—dynamic balancing testing and weight reduction calibration—into the same equipment and connecting them through an automatic transfer mechanism, thereby avoiding the need to move the long-shaft rotor between workstations.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The integrated machine mainly includes a machine base 50, a dynamic balancing testing device, a weight-removing device, and a lifting mechanism connecting the two. The dynamic balancing testing device is responsible for driving and supporting the rotation of the long-shaft rotor to detect its imbalance and phase; the lifting mechanism is responsible for automatically lifting the long-shaft rotor from the testing station and transferring it to the weight-removing station after the test is completed; the weight-removing device is responsible for clamping and fixing the long-shaft rotor and drilling holes at the designated imbalance points to remove the weight.

[0034] Reference Figure 1 , Figure 2 and Figure 3 The dynamic balancing test device is fixedly installed on the machine base 50 and mainly consists of a first drive mechanism and a support mechanism.

[0035] Reference Figure 4-7The first drive mechanism drives the long-shaft rotor to rotate, allowing sensors to collect dynamic balance data. It employs a swing-down belt drive scheme. This mechanism includes a first motor 11 as the drive source. The first motor 11 is fixed to the machine base 50, and its output shaft is connected to a power pulley 111. A transmission belt 119 surrounds the power pulley 111, multiple driven pulleys 112, and a tension pulley 113, forming a basic transmission circuit. A first adjustment assembly controls the tension of the transmission belt 119. It includes a first adjustment cylinder 114, a sliding pair 115 consisting of a slide rail and a slider, and a mounting plate 116. The tension pulley 113 is rotatably mounted on the mounting plate 116, which is fixed to the slider of the sliding pair 115. By controlling the extension and retraction of the first adjustment cylinder 114, the mounting plate 116 can be driven to move along the sliding pair 115, thereby displacing the tension pulley 113 and adjusting the tension of the transmission belt 119. To achieve contact and separation between the transmission belt 119 and the long-shaft rotor, a swing arm assembly is designed into this mechanism. The swing arm assembly includes a swing arm 211 that can swing about a pivot. At both ends of the swing arm 211, a first output pulley 117 and a second output pulley 118 are respectively mounted, and a drive belt 119 is also fitted onto these two output pulleys. A swing drive cylinder 222 is the power source for the swing arm 211; its cylinder body is fixed to the machine base 50, and its piston rod is hinged to a first rotating shaft 224 via a swing connector 223. The first rotating shaft 224 is a square-section shaft, fixedly connected to the swing arm 211 to prevent relative rotation. When the swing drive cylinder 222 is activated, it drives the first rotating shaft 224 to rotate via the swing connector 223, thereby driving the entire swing arm 211 to swing about its mounting point. In this embodiment, there are two driven pulleys 112. The two driven pulleys 112 are arranged near the first output pulley 117, and the two driven pulleys 112 and the first output pulley 117 are arranged in a triangle to constrain the transmission belt 119 to always be tightly wrapped on the two output pulleys.

[0036] Reference Figure 4-7 When dynamic balancing testing is required, the swing drive cylinder 222 pushes the swing arm 211 downwards, causing the transmission belt 119 spanning between the first output pulley 117 and the second output pulley 118 to press against the cylindrical surface of the long-shaft rotor. Driven by the first motor 11, the transmission belt 119 drives the long-shaft rotor to rotate through friction. After the test, the swing drive cylinder 222 retracts, the swing arm 211 lifts, the transmission belt 119 disengages from the rotor, and the rotor stops rotating. This design achieves rapid switching of drive contact and provides smooth belt drive, suitable for rotors of different diameters.

[0037] Reference Figure 4-7The support mechanism is used to support the long-shaft rotor during testing and provide a stable support reference for its rotation. In this embodiment, the support mechanism has two sets of identical structures arranged symmetrically, supporting both ends of the rotor respectively. Each set of support mechanisms is independently set on a movable plate 31. The core of each set of support mechanisms is the support rollers 33 used to support the weight of the rotor. Typically, two support rollers 33 are provided, with their axes parallel to the axis of the long-shaft rotor, and the rotor is placed on a V-shaped or parallel bracket formed by the two rollers. To accommodate rotors of different diameters and ensure that the drive belt 119 has a suitable downward pressure contact point, the height of the support rollers 33 is adjustable.

[0038] Reference Figure 4-7 The second adjustment assembly is responsible for this function and includes a second adjustment cylinder 34, an adjustment plate 35, a sliding plate 36, and a locking element 37. Two sliding plates 36 are provided, fixed at intervals on the moving plate 31, each with a vertically oriented sliding groove. A corresponding insert shaft is provided on the adjustment plate 35, allowing it to slide up and down along the sliding groove of the sliding plate 36. Two support rollers 33 are rotatably mounted on the adjustment plate 35. The second adjustment cylinder 34 is mounted on the moving plate 31, and its output shaft is fixedly connected to the adjustment plate 35, used to drive the adjustment plate 35 to rise and fall. Once in position, it can be mechanically locked using the locking element 37 to ensure support rigidity. To prevent axial movement of the long-shaft rotor during rotation testing, which would affect test accuracy, an abutment assembly is also provided on the support mechanism. The abutment assembly includes an abutment roller 32 mounted on the adjustment plate 35 via a bracket. The axis of this abutment roller 32 is perpendicular to the rotor axis, and its wheel surface can abut against the end face of the long-shaft rotor. Since both ends of the support mechanism are equipped with abutment rollers 32, they form axial constraints on the rotor from both ends, effectively eliminating the influence of axial thrust that may be generated by belt drive. To automatically sense whether the rotor is in place, a through-beam sensor is installed on the top of the slide plate 36, with its transmitter and receiver installed face to face. When the long-shaft rotor is placed into the support roller 33, the light path of the through-beam sensor is interrupted, and the system determines that testing can begin based on this. In addition, to accommodate long-shaft rotors of different lengths, the machine base 50 is equipped with a spacing adjustment mechanism. In this embodiment, a chain drive module 501 is used, which can drive the two moving plates 31 to move towards or away from each other, thereby adjusting the spacing between the two sets of support mechanisms.

[0039] The weight-reducing device is also set on the machine base 50, located on one side or behind the dynamic balancing test device, and is mainly responsible for drilling and correcting the rotor whose imbalance has been measured.

[0040] Reference Figure 8The clamping mechanism, used to securely fix the long-shaft rotor during drilling, consists of a lifting mechanism and a pressing mechanism. The lifting mechanism serves as a bridge between the testing and de-weighting processes. It includes a support plate 61, the bottom of which slides on the machine base 50 via a slide bar and groove, allowing it to slide on the machine base 50 for coarse adjustment. The lifting mechanism also includes a support platform 62 horizontally fixed to the support plate 61, a lifting platform 64 driven by a lifting cylinder 63, and a support structure fixed to the lifting platform 64. The support structure has an arc-shaped groove matching the rotor's shape, specifically including a plate or block with an arc-shaped groove for support, used to receive the rotor. The pressing mechanism is vertically opposite the support structure, forming a clamping pair. It includes a pressing plate 71 that can swing around a second rotating shaft 73, and a pressing cylinder 72 that drives the pressing plate 71. The pressing cylinder 72 is fixedly mounted on the lifting platform 64. After the rotor is lifted into place by the lifting mechanism, the pressing cylinder 72 is activated, pushing the pressing plate 71 to rotate around the shaft, so that its other end presses against the rotor and fixes it in the arc-shaped groove of the support structure.

[0041] Reference Figure 9 The drilling mechanism is the execution unit for the material removal operation. It includes a drill bit 74 and a drive module 75 that drives the drill bit 74 to perform multi-axis movements. Based on the magnitude and phase information of the imbalance given by the dynamic balancing test system, the control system can calculate the location where the material needs to be removed. The drive module 75 drives the drill bit 74 to move to that point, and then performs the drilling operation. To further optimize the working environment, the drilling mechanism can also integrate a dust collection pipe and connect to an industrial vacuum cleaner 8 to remove metal debris in real time during drilling.

[0042] A method for weight reduction in dynamic balancing testing of a long-shaft rotor using the aforementioned integrated machine includes the following steps: Step 1: Loading and Testing. Based on the rotor length, adjust the spacing between the two sets of support mechanisms using the adjusting mechanism. Place the long-shaft rotor onto the support rollers 33 at both ends. The through-beam sensor detects the rotor's positioning. The second adjusting cylinder 34 adjusts the support height and locks it with the locking element 37, with the end-abutting rollers 32 pressing against the rotor's end face. The swing drive cylinder 222 drives the swing arm 211 downwards, causing the transmission belt 119 to press against the rotor. The first motor 11 starts, driving the rotor to rotate, and the external dynamic balancing measurement system performs the test.

[0043] Step 2: Automatic Transfer. Upon completion of the test, the first motor 11 stops, and the swing arm 211 lifts, disengaging the transmission belt 119 from the rotor. The lifting cylinder 63 drives the lifting platform 64 to rise, where the support structure lifts the long shaft rotor, disengaging it from the support rollers 33.

[0044] Step 3: Clamping and Weight Removal. The lifting mechanism takes over the rotor and lifts it to the weight removal station. The pressing cylinder 72 actuates, driving the pressing plate 71 to press down and secure the rotor to the support structure. Based on the test results, the drilling mechanism, driven by the drive module 75, moves the drill bit 74 to the designated point to perform drilling and weight removal. The dust suction pipe simultaneously removes debris.

[0045] Step 4: Reset and Unloading. After weight reduction, drill bit 74 is reset, lower pressure plate 71 is released, lifting platform 64 descends, and rotor is placed back on support roller 33. The operator can then lift the corrected rotor away, completing the entire process.

[0046] The implementation principle of this application is as follows: Through integrated mechanical design, the rotary drive and support functions required for dynamic balancing testing, and the fixing and processing functions required for weight reduction and correction, are integrated onto the same machine tool 50. A belt drive scheme with swingable downward pressure is used to solve the spatial interference problem between rotary drive and workpiece transfer. The automatic connection between the long-shaft rotor and the weight reduction station is achieved through the cooperation of a liftable support mechanism with end-face positioning and an automatically transferable lifting and clamping mechanism. This method and equipment avoid the physical handling of the long-shaft rotor between processes, improve production efficiency and operational safety through automation, and ensure the consistency of the benchmark and processing accuracy of dynamic balancing testing and weight reduction and correction.

[0047] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A long-shaft rotor dynamic balancing test and weight removal integrated machine, characterized in that, include: Machine (50); A dynamic balancing test device is installed on the machine base (50) to drive and support the rotation of the long shaft rotor for dynamic balancing testing; A weight-removal device is installed on the machine base (50) and is used to remove weight from the long shaft rotor after the test is completed; A lifting mechanism is provided between the dynamic balancing test device and the weight removal device, and is used to transfer the long shaft rotor that has completed the dynamic balancing test from the dynamic balancing test device to the processing station of the weight removal device.

2. The integrated machine for dynamic balancing and weight removal of a long-shaft rotor according to claim 1, characterized in that, The dynamic balancing testing device includes: A support mechanism is provided on the machine base (50) for supporting the long shaft rotor; A first drive mechanism is used to drive the long-shaft rotor supported by the support mechanism to rotate; The lifting mechanism is used to lift and transfer the long-shaft rotor from the support mechanism.

3. The long-shaft rotor dynamic balancing test and weight removal integrated machine according to claim 2, characterized in that, The first driving mechanism includes: Driver source; The transmission belt (119) is driven by the drive source; A swing arm assembly having a swingable swing arm (211); At least one output pulley is mounted on the swing arm (211) and meshes with the drive belt (119); The swing arm (211) can swing to press the transmission belt (119) against the surface of the long shaft rotor to drive it to rotate, and can swing to disengage the transmission belt (119) from the long shaft rotor.

4. The integrated machine for dynamic balancing and weight removal of a long-shaft rotor according to claim 2, characterized in that, The supporting structure includes: At least one set of support rollers (33) is provided for supporting the long shaft rotor; The support mechanism also includes an adjustment component for adjusting the height of the support roller (33).

5. The integrated machine for dynamic balancing and weight removal of a long-shaft rotor according to claim 2, characterized in that, The support mechanism further includes an abutment component, which includes an abutment roller (32) that can abut against the axial end face of the long shaft rotor to limit the axial movement of the long shaft rotor.

6. The integrated machine for dynamic balancing and weight removal of a long-shaft rotor according to claim 1, characterized in that, The weight reduction device includes: A clamping mechanism for fixing the long-shaft rotor during processing; A drilling mechanism is used to drill holes in the long-shaft rotor to reduce its weight. The lifting mechanism transfers the long-shaft rotor into the clamping mechanism.

7. The integrated machine for dynamic balancing and weight removal of a long-shaft rotor according to claim 6, characterized in that, The clamping mechanism includes: The support structure provided on the lifting mechanism is used to support the long shaft rotor; A pressing mechanism, disposed opposite to the support structure, is used to press the long shaft rotor onto the support structure.

8. The integrated machine for dynamic balancing and weight removal of a long-shaft rotor according to claim 6, characterized in that, The drilling mechanism includes: Drill bit (74); A drive module (75) is used to drive the drill bit (74) to the target de-point position of the long-shaft rotor.

9. A long-shaft rotor dynamic balancing test and weight removal integrated machine according to claim 8, characterized in that, The drilling mechanism also includes a suction pipe that is linked to the drill bit (74) and an industrial vacuum cleaner (8) connected to the suction pipe.

10. A method for weight reduction in dynamic balancing testing of a long-shaft rotor, applied to an integrated dynamic balancing and weight reduction machine for a long-shaft rotor as described in any one of claims 1-9, characterized in that, Includes the following steps: The long-shaft rotor is placed on the dynamic balancing test device for dynamic balancing test; After the test is completed, the long shaft rotor is transferred from the dynamic balancing test device to the weight removal device by the lifting mechanism. The long-shaft rotor is de-weighted using the de-weighting device.

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