CN114878076B - Dynamic balance testing device of flexible rotor - Google Patents
Dynamic balance testing device of flexible rotor Download PDFInfo
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- CN114878076B CN114878076B CN202210806992.1A CN202210806992A CN114878076B CN 114878076 B CN114878076 B CN 114878076B CN 202210806992 A CN202210806992 A CN 202210806992A CN 114878076 B CN114878076 B CN 114878076B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
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Abstract
The invention belongs to the technical field of dynamic balance test of flexible rotors, and discloses a dynamic balance test device of a flexible rotor, which comprises a base, wherein a rotor support frame is arranged at the top of the base, a power control box is arranged on one side of the base, and the rotor support frame comprises: the fixed point support frame is provided with a driver and a first sensor, and the first sensor is used for measuring the unbalance of the flexible rotor at the fixed point support frame; the cruise support frame is provided with a second sensor for measuring the unbalance of the flexible rotor at the non-fixed point support frame; a servo driving device is arranged in the power control box and drives the cruising support frame to reciprocate on the base so as to measure the unbalance amount of the flexible rotor at the non-fixed point support frame. The invention has the beneficial effects that: the unbalance amount of the flexible rotor can be measured by traversing the length of the flexible rotor by one time through the cruise support frame, so that the measuring times of the unbalance amount of the flexible rotor are reduced.
Description
Technical Field
The invention belongs to the technical field of dynamic balance testing of flexible rotors, and particularly relates to a dynamic balance testing device of a flexible rotor.
Background
Flexible rotor concept as the capacity of the unit increases, the axial size of the unit rotor increases. The thin and long rotor has increased flexibility, so that the critical rotation speed is greatly reduced, and the working rotation speed exceeds the first-order critical rotation speed or the second-order and third-order critical rotation speeds. Such rotors are known as flexible rotors.
The balance process is dynamic balance, and the unbalanced amount and phase of the unbalanced rotor are measured and corrected to eliminate the unbalance so that the unbalanced centrifugal force is not produced during rotation of the rotor.
For the flexible rotor, because the working rotating speed of the rotor is far lower than the critical rotating speed, the flexural deformation of the rotating axis of the rotor is very small and can be ignored, the centrifugal inertia force caused by the unbalance amount of each section of the rotor can be simplified to any two cross sections on the rotor, namely, the dynamic balancing process of the rotor can be completed by utilizing two balancing surfaces at two ends of the flexible rotor, if the two end surfaces of the rotor cannot be additionally provided with dynamic balancing blocks, the dynamic balancing is carried out by arranging balancing rings for mounting the dynamic balancing blocks at two ends of the motor rotor.
The working rotating speed of the flexible rotor motor rotor is higher than the first-order critical rotating speed and lower than the second-order critical rotating speed; the thin and long rotor is called as a flexible rotor, when the flexible rotor rotates, under the action of centrifugal force caused by unbalance, elastic deformation can be generated, namely, the rotation axis can generate obvious deformation, the deformation degree can also change along with the rotation speed, and through test and verification, the first-order vibration type curve of the flexible rotor is parabolic, and the second-order vibration type curve of the flexible rotor is S-shaped; dynamic balancing for flexible rotors is a very complex process.
Among the prior art, to the dynamic balance test of flexible rotor, mainly carry out the subregion with the rotor and support and carry out preliminary dynamic balance and measure, then adjust the support position according to preliminary dynamic balance measurement result, so adjust repeatedly until the dynamic balance measurement finishes, wherein:
the Chinese invention patent CN202111335652.7 discloses a four-side dynamic balance method of a flexible rotor of a 2-pole asynchronous motor, which solves the problem of how to quickly finish the dynamic balance of the flexible rotor of the 2-pole asynchronous motor with higher rotating speed by using a common dynamic balance machine; aiming at the flexible rotor of the 2-pole asynchronous motor, a dynamic balancing method of four balancing surfaces is adopted, the four balancing surfaces on the flexible rotor are positioned by utilizing a 1-order vibration mode characteristic curve and a 2-order vibration mode characteristic curve of the flexible rotor of the 2-pole asynchronous motor, and two ends of the rotor are respectively provided with 2 balancing rings to carry out dynamic balancing by a method of enveloping a vibration mode peak value on the 2-order vibration mode characteristic curve.
In the patent, the fourth step and the fifth step of the test method are to adopt a measurement method of carrying out partition support on the rotor to carry out preliminary dynamic balance measurement, then adjusting the support position according to the preliminary dynamic balance measurement result, and repeating the adjustment until the dynamic balance measurement is finished.
The testing method has the technical problems that repeated measurement and debugging are needed to determine the dynamic balance result of the flexible rotor, a large amount of time and calculation are needed, and time and labor are wasted.
Disclosure of Invention
The objectives to be achieved by the present invention are: the dynamic balance measuring method solves the technical problems that the dynamic balance result of the flexible rotor needs to be determined through repeated measurement and debugging, a large amount of time and calculation are needed, and time and labor are wasted in the conventional dynamic balance measuring technology.
In order to achieve the above object, the present invention provides a dynamic balance testing apparatus of a flexible rotor.
The invention adopts the following specific technical scheme:
the utility model provides a dynamic balance testing arrangement of flexible rotor, includes the base, and the top of base is equipped with the rotor support frame, and one side of base is equipped with the power control box, the rotor support frame includes:
the fixed point support frame is provided with a driver and a first sensor, the driver is used for driving the flexible rotor to rotate to carry out dynamic balance measurement, and the first sensor is used for measuring the unbalance of the flexible rotor at the fixed point support frame;
the cruise support frame is provided with a second sensor for measuring the unbalance of the flexible rotor at the non-fixed point support frame;
a servo driving device is arranged in the power control box and drives the cruise support frame to reciprocate on the base so as to measure the unbalance amount of the flexible rotor at the non-fixed point support frame;
and a controller is also arranged in the power control box and used for controlling the fixed point support frame, the cruise support frame and the servo driving device to measure the unbalance amount of the flexible rotor, calculating and recording in real time, and adjusting the position of the cruise support frame in real time according to the calculation result.
As a further improvement of the invention, the number of the fixed point supporting frames is three, the number of the cruising supporting frames is two, and one cruising supporting frame is arranged between the adjacent fixed point supporting frames.
As a further improvement of the invention, the second sensor comprises a first detection block and a second detection block of two semicircular rings, and the first detection block and the second detection block are closed to form a complete circular ring-shaped detection ring.
As a further improvement of the present invention, the first detection block and the second detection block each include a main detection ring and a secondary detection ring, the main detection ring is provided with a bending portion and a vibration strain gauge, the secondary detection ring is provided with a support ring and a detection sheet, the support ring fixes the detection sheet on the main detection ring, one end of the detection sheet is attached to the vibration strain gauge, the other end is attached to the flexible rotor, and the vibration of the flexible rotor is transmitted to the vibration strain gauge, so that the unbalance measurement is realized.
As a further improvement of the present invention, the bending portion is formed in a zigzag shape, the bending portion and the vibration strain gauge are provided with four, and are uniformly distributed inside the circumference of the detection main ring, and the bending portion and the vibration strain gauge are arranged at intervals.
As a further improvement of the invention, steel balls are arranged on the contact surface of the detection main ring and the flexible rotor, so that the contact surface of the detection main ring and the flexible rotor is in rolling contact.
As a further improvement of the invention, the driver is provided with a motor and two direction-changing wheels, a synchronous pulley is fixed at the end part of the flexible rotor, and the motor drives the flexible rotor to rotate under the guidance of the direction-changing wheels through a synchronous belt.
As a further improvement of the invention, the cruise support frame is fixed on a guide rail at the top of the base, and the servo driving device is connected with the bottom of the cruise support frame through a ball screw to drive the cruise support frame to reciprocate on the base.
As a further improvement of the present invention, the cruise support frame is provided with a position sensor, and the controller obtains detection results of the position sensor and the second sensor, and sends a control instruction to the servo driving device according to the detection results to control the cruise support frame to move to a specified position for detection.
As a further improvement of the invention, the number of the servo driving devices is equal to that of the cruise support frames, and the servo driving devices correspond to the cruise support frames one by one.
The invention has the positive effects that:
1. the unbalance amount of the flexible rotor can be measured by traversing the length of the flexible rotor by one time through the cruise support frame, so that the measuring times of the unbalance amount of the flexible rotor are reduced, and the measuring time is saved.
2. The unbalance measurement is carried out on each position of the flexible rotor through the length of the flexible rotor traversed once by the cruise support frame, and compared with the prior art, the unbalance position and the unbalance amount of the flexible rotor can be accurately given.
Drawings
FIG. 1 is a schematic three-dimensional structure diagram of a dynamic balance testing device of a flexible rotor according to the present invention;
FIG. 2 is an enlarged view of the dynamic balance testing apparatus M of a flexible rotor of the present invention shown in FIG. 1;
FIG. 3 is a front view of the dynamic balance testing apparatus of a flexible rotor of the present invention shown in FIG. 2, with a servo drive shown in cross-section;
FIG. 4 is a top view of the dynamic balance testing apparatus of a flexible rotor of the present invention shown in FIG. 3, with the servo drive shown in cross-section;
FIG. 5 is a left side view of the dynamic balance testing apparatus of a flexible rotor shown in FIG. 3 in accordance with the present invention;
FIG. 6 is a cross-sectional view at A-A of the dynamic balance testing apparatus of a flexible rotor of the present invention shown in FIG. 3;
FIG. 7 is a schematic structural view of a closed front side of a second sensor of the dynamic balance testing device of a flexible rotor shown in FIG. 1;
FIG. 8 is a schematic view of the reverse configuration of the second sensor of the dynamic balance testing device of a flexible rotor shown in FIG. 1 when closed;
fig. 9 is a schematic position diagram of a second sensor dividing line of the dynamic balance testing device of the flexible rotor shown in fig. 1.
Illustration of the drawings: 1-a base, 101-a first ball screw, 1011-a second ball screw, 102-a first rail, 103-a second rail, 2-a driver, 201-a first guide hole, 202-a second guide hole, 3-a first fixed point support, 301-a first gland, 302-a first bracket, 303-a second bracket, 4-a first cruise support, 401-a second slide, 5-a power control box, 501-a controller, 502-a first motor, 503-a second motor, 6-a third fixed point support, 7-a second cruise support, 701-a first slide, 8-a second fixed point support, 9-a motor, 10-a fixed plate, 11-a turning wheel, 12-a support chassis, 13-a hinge shaft, 14-a gland, 15-a support top frame, 16-a press block, 17-a hydraulic push rod, 18-a second sensor, 1801-a bend, 1802-a detection main ring, 1803-a detection piece, 1804-vibration strain gauge, 1805-support ring, 1806-detection secondary ring, 1807-reinforcement sheet, 1808-wireless transmitter, 19-buckle, 20-first sensor, 21-chassis adjusting device, 22-locking handle, 23-chassis, 24-adjusting cylinder, 25-guide rail, 26-synchronous pulley, 27-flexible rotor.
Detailed Description
The invention is described in detail below with reference to the following figures and specific embodiments:
the specific embodiment is as follows:
in the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
The first embodiment is as follows:
as shown in fig. 1, a dynamic balance testing device of flexible rotor, including base 1, the top of base 1 is equipped with rotor support frame, and one side of base 1 is equipped with power control box 5, and rotor support frame includes:
the fixed point support frame is provided with a driver and a first sensor, the driver is used for driving the flexible rotor to rotate to carry out dynamic balance measurement, and the first sensor is used for measuring the unbalance amount of the flexible rotor at the fixed point support frame;
specifically, as shown in fig. 1, 2 and 5, the number of the fixed point supports is three, which are a first fixed point support 3, a second fixed point support 8 and a third fixed point support 6, a first cruise support 4 is arranged between the first fixed point support 3 and the second fixed point support 8, a second cruise support 7 is arranged between the second fixed point support 8 and the third fixed point support 6, wherein a driver 2 is arranged on a side surface of the first fixed point support 3, the driver 2 includes a motor 9 and two direction-changing wheels 11, a synchronous pulley 26 is fixed at an end of the flexible rotor 27, the motor 9 drives the synchronous pulley 26 to rotate under the guidance of the direction-changing wheels 11 through a synchronous belt, and then drives the flexible rotor 27 to rotate for dynamic balance detection.
Specifically, as shown in fig. 2 and 5, taking the first fixed point support frame 3 as an example, the fixed point support frame includes a bottom frame 23, a bottom frame adjusting device 21 is disposed on a side surface of the bottom frame 23, and is used for adjusting a height of the bottom frame 23 to meet different measurement requirements, a support bottom frame 12 is disposed on a top portion of the bottom frame 23, the support bottom frame 12 is hinged to a support top frame 15 through a hinge shaft 13, a hydraulic push rod 17 is disposed on the support top frame 15, a press block 16 is connected to a bottom portion of the hydraulic push rod 17, the support bottom frame 12 is provided with a first sensor 20, the first sensor 20 includes three parts respectively fixed to a first press cover 301, a first bracket 302 and a second bracket 303, the first press cover 301, the first bracket 302 and the second bracket 303 are used for fixing and supporting a flexible rotor 27, a buckle 19 is disposed on a non-hinged end of the support top frame 15, and when the support bottom frame 12 and the support top frame 15 are closed, the buckle 19 is locked by the buckle 19.
The cruise support frame is provided with a second sensor for measuring the unbalance of the flexible rotor at the non-fixed point support frame;
specifically, as shown in fig. 1, 2 and 6, taking the first cruise support frame 4 as an example, the cruise support frame also includes a bottom frame 23, a bottom frame adjusting device 21 is disposed on a side surface of the bottom frame 23 and used for adjusting the height of the bottom frame 23 to meet different measurement requirements, a supporting bottom frame 12 is disposed on the top of the bottom frame 23, the supporting bottom frame 12 is hinged to a supporting top frame 15 through a hinge shaft 13, a hydraulic push rod 17 is disposed on the supporting top frame 15, a pressing block 16 is connected to the bottom of the hydraulic push rod 17, and a difference from fixed point supporting is that the cruise support frame is provided with a second sensor 18, as shown in fig. 9, the second sensor 18 is divided into two parts at a dividing line E, the upper part is connected to the pressing block 16, the lower part is fixed to the supporting bottom frame 12, and when the supporting bottom frame 12 and the supporting top frame 15 are closed, the two parts of the second sensor 18 are also closed into a complete ring shape.
A servo driving device is arranged in the power control box 5 and drives the cruise support frame to reciprocate on the base so as to measure the unbalance amount of the flexible rotor at the non-fixed point support frame;
and a controller is also arranged in the power control box and used for controlling the fixed point support frame, the cruise support frame and the servo driving device to measure the unbalance amount of the flexible rotor, calculating and recording in real time, and adjusting the position of the cruise support frame in real time according to the calculation result.
Specifically, as shown in fig. 3, 4 and 5, a servo driving device is arranged in the power control box 5, and the servo driving device includes a controller 501, two ball screws, a first motor 502 and a second motor 503, where the two ball screws are respectively a first ball screw 101 and a second ball screw 1011, the first motor 502 is connected to a second slide carriage 401 at the bottom of the first cruise support frame 4 through the ball screws 101, the first cruise support frame 4 is driven to reciprocate on the first guide rail 102 and the second guide rail 103 by driving the second slide carriage 401, the second motor 503 is connected to a first slide carriage 701 at the bottom of the second cruise support frame 7 through the ball screws 1011, and the second cruise support frame 7 is driven to reciprocate on the first guide rail 102 and the second guide rail 103 by driving the first slide carriage 701;
the bottom of the second cruising support frame 7 and the bottom of the first cruising support frame 4 are both provided with a position sensor, the controller 501 obtains detection results of the position sensor and the second sensor, sends a control instruction to the servo driving device according to the detection results, controls the first motor 502 and the second motor 503, and drives the second cruising support frame 7 and the first cruising support frame 4 to move to specified positions for detection.
In the design scheme, the unbalance amount of each part of the flexible rotor can be measured by traversing the length of the flexible rotor once through the cruise support frame, so that the measuring times of the unbalance amount of the flexible rotor are reduced, and the measuring time is saved. The length of the flexible rotor is traversed once by the cruise support frame, unbalance measurement is carried out on each position of the flexible rotor, and compared with the prior art, the unbalance position and the unbalance amount of the flexible rotor can be accurately and quickly given.
Example two:
on the basis of the first embodiment, as shown in fig. 7, 8 and 9, the second sensor 18 is divided into two parts at the dividing line E, the upper part is a first detecting block connected with the pressing block 16, the lower part is a second detecting block fixed with the supporting base frame 12, and when the supporting base frame 12 and the supporting top frame 15 are closed, the two parts of the second sensor 18 are also closed into a complete ring shape.
The first detection block and the second detection block respectively comprise a main detection ring 1802 and a secondary detection ring 1806, the main detection ring 1802 is provided with a bending portion 1801 and a vibration strain piece 1804, the secondary detection ring 1806 is provided with a support ring 1805 and a detection piece 1803, the support ring 1805 fixes the detection piece 1803 on the main detection ring 1802, one end of the detection piece 1803 is attached to the vibration strain piece 1804, the other end of the detection piece 1803 is attached to the flexible rotor, vibration of the flexible rotor 27 is transmitted to the vibration strain piece 1804, and unbalance measurement of the flexible rotor 27 is achieved.
Further, the bending portion 1801 is formed in a zigzag shape, the bending portion 1801 and the vibration strain piece 1804 are provided in four, and are uniformly distributed on the inner side of the circumference of the detection main ring 1802 closed in a complete ring shape, and the bending portion 1801 and the vibration strain piece 1804 are arranged alternately.
Furthermore, steel balls are arranged on the contact surfaces of the detection main ring 1802 and the flexible rotor 27, so that the contact surfaces of the detection main ring 1802 and the flexible rotor 27 are matched in a rolling contact manner, and the cruise support frame can slide on the flexible rotor 27 conveniently.
Example three:
on the basis of the first embodiment or the second embodiment, the driver 2 is provided with an electric motor 9 and two direction-changing wheels 11 which are fixed on a fixed plate 10, a synchronous pulley 26 is fixed at the end of a flexible rotor 27, the electric motor 9 drives the synchronous pulley 26 to rotate under the guidance of the direction-changing wheels 11 through a synchronous belt, and further drives the flexible rotor 27 to rotate, the fixed plate 10 is further provided with a first guide hole 201 and a second guide hole 202, the two direction-changing wheels 11 are driven by an adjusting cylinder 24 to move for adjusting the wrap angle of the synchronous belt to a synchronous belt path, wherein the servo driving device comprises a controller 501, two ball screws, a first electric motor 502 and a second electric motor 503, the two ball screws are respectively a first ball screw 101 and a second ball screw 1011, the first electric motor 502 is connected with a second sliding seat 401 at the bottom of the first cruise support frame 4 through the ball screws 101, the second slide carriage 401 is driven to drive the first cruising support frame 4 to reciprocate on the first guide rail 102 and the second guide rail 103, the second motor 503 is connected with the first slide carriage 701 at the bottom of the second cruising support frame 7 through a ball screw 1011, and the first slide carriage 701 is driven to drive the second cruising support frame 7 to reciprocate on the first guide rail 102 and the second guide rail 103.
Furthermore, the fixed point support frame is also provided with a locking handle for locking the fixed point support frame at a specified position during initial adjustment.
The foregoing has outlined broadly some of the aspects and features of the various embodiments, which should be construed to be merely illustrative of various potential applications. Other beneficial results can be obtained by applying the disclosed information in a different manner or by combining various aspects of the disclosed embodiments. Other aspects and a more complete understanding may be obtained by referring to the detailed description of the exemplary embodiments taken in conjunction with the accompanying drawings, based on the scope defined by the claims.
The above examples illustrate the present invention in detail. It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions, deletions, and substitutions which may be made by those skilled in the art within the spirit of the present invention are also within the scope of the present invention.
Claims (6)
1. The utility model provides a dynamic balance testing arrangement of flexible rotor, includes the base, and the top of base is equipped with rotor support frame, and one side of base is equipped with power control box, its characterized in that, rotor support frame includes:
the fixed point support frame is provided with a driver and a first sensor, the driver is used for driving the flexible rotor to rotate to carry out dynamic balance measurement, and the first sensor is used for measuring the unbalance of the flexible rotor at the fixed point support frame;
the cruise support frame is provided with a second sensor for measuring the unbalance of the flexible rotor at the non-fixed point support frame;
a servo driving device is arranged in the power control box and drives the cruise support frame to reciprocate on the base so as to measure the unbalance amount of the flexible rotor at the non-fixed point support frame;
the power control box is also internally provided with a controller which is used for controlling the fixed point support frame, the cruise support frame and the servo driving device to measure the unbalance amount of the flexible rotor, calculating and recording in real time and adjusting the position of the cruise support frame in real time according to the calculation result;
the second sensor comprises a first detection block and a second detection block of two semicircular rings, and the first detection block and the second detection block are closed to form a complete annular detection ring;
the first detection block and the second detection block respectively comprise a main detection ring and an auxiliary detection ring, the main detection ring is provided with a bending part and a vibration strain gauge, the auxiliary detection ring is provided with a support ring and a detection piece, the support ring fixes the detection piece on the main detection ring, one end of the detection piece is attached to the vibration strain gauge, the other end of the detection piece is attached to the flexible rotor, vibration of the flexible rotor is transmitted to the vibration strain gauge, and unbalance measurement is achieved;
the bending parts are zigzag, four bending parts and four vibration strain gauges are uniformly distributed on the inner side of the circumference of the detection main ring, and the bending parts and the vibration strain gauges are arranged at intervals;
and steel balls are arranged on the contact surface of the detection main ring and the flexible rotor, so that the contact surface of the detection main ring and the flexible rotor is in rolling contact.
2. The dynamic balance testing device of the flexible rotor as claimed in claim 1, wherein there are three fixed point supports, there are two cruise supports, and a cruise support is provided between adjacent fixed point supports.
3. The dynamic balance testing device of the flexible rotor as claimed in any one of claims 1 to 2, wherein the driver is provided with an electric motor and two direction-changing wheels, a synchronous pulley is fixed at the end of the flexible rotor, and the electric motor drives the flexible rotor to rotate under the guidance of the direction-changing wheels through the synchronous belt.
4. The dynamic balance testing device of the flexible rotor as claimed in claim 3, wherein the cruise support frame is fixed on the guide rail on the top of the base, and the servo driving device is connected with the bottom of the cruise support frame through a ball screw to drive the cruise support frame to reciprocate on the base.
5. The dynamic balance testing device of the flexible rotor as claimed in claim 4, wherein the cruise support frame is provided with a position sensor, the controller obtains detection results of the position sensor and the second sensor, and sends a control command to the servo driving device according to the detection results to control the cruise support frame to move to a specified position for detection.
6. The dynamic balance testing device of the flexible rotor as claimed in claim 5, wherein the number of the servo driving devices is equal to the number of the cruise support frames, and the servo driving devices correspond to the cruise support frames one by one.
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| JP2001304985A (en) * | 2000-04-25 | 2001-10-31 | Nissan Motor Co Ltd | Torque-measuring apparatus |
| CN202869741U (en) * | 2012-11-06 | 2013-04-10 | 上海电机学院 | Gantry type automatic detection and correction equipment for dynamic balance of shaft under test |
| CN103528726A (en) * | 2013-11-01 | 2014-01-22 | 哈尔滨工业大学 | Cross-beam-type six-dimensional force sensor with overload protection function |
| CN104764563A (en) * | 2015-04-09 | 2015-07-08 | 西安电子科技大学 | High-speed main shaft complete machine intelligent dynamic balance device |
| CN104848990A (en) * | 2015-05-22 | 2015-08-19 | 西安电子科技大学 | Ultra-precision dynamic balancing device applicable to micro rotor |
| CN105865714A (en) * | 2016-03-31 | 2016-08-17 | 西安电子科技大学 | Rotor imbalance measurement device based on grating scale feedback signal |
| CN111157219A (en) * | 2019-11-26 | 2020-05-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Rotating shaft balance for propeller power influence wind tunnel test |
| CN211205638U (en) * | 2019-12-27 | 2020-08-07 | 无锡超通智能制造技术研究院有限公司 | Ultra-precise laser automatic de-weighting dynamic balancing machine of micro turbojet engine rotor |
| CN212432420U (en) * | 2020-07-29 | 2021-01-29 | 广西恒达电机科技有限公司 | Dynamic balance testing machine for motor rotor |
| CN112082687A (en) * | 2020-08-26 | 2020-12-15 | 东北电力大学 | Inter-dimensional decoupling three-dimensional wireless passive sensor |
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