CN115493837A - Shafting characteristic research mechanism of three-degree-of-freedom controllable rigidity permanent magnet eddy coupling - Google Patents
Shafting characteristic research mechanism of three-degree-of-freedom controllable rigidity permanent magnet eddy coupling Download PDFInfo
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- CN115493837A CN115493837A CN202211250339.8A CN202211250339A CN115493837A CN 115493837 A CN115493837 A CN 115493837A CN 202211250339 A CN202211250339 A CN 202211250339A CN 115493837 A CN115493837 A CN 115493837A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
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- 229910052742 iron Inorganic materials 0.000 claims description 12
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides a three-degree-of-freedom controllable rigidity permanent magnet eddy current coupling shafting characteristic research mechanism which can be used for carrying out experimental research on the characteristics of a permanent magnet eddy current coupling shafting. The three-degree-of-freedom adjusting mechanism can change the sizes of parallel misalignment and angle misalignment of a main dynamic rotor shaft system and a driven dynamic rotor shaft system of the permanent magnet eddy current coupling shaft, so that the coupling rigidity is changed, and the influence of different coupling rigidities on the characteristics of the shaft systems is developed. Meanwhile, a square load adjustable mechanism is formed by combining a pair of permanent magnet eddy current couplings and the fan to provide adjustable square load for the permanent magnet eddy current couplings of the researched object. The whole mechanism provides adjustable rigidity and load for the characteristic research of the permanent magnet eddy current coupling shafting, provides a comprehensive high-efficiency feasible platform for the application research of the permanent magnet eddy current coupling, and greatly promotes the development and the practical application of the permanent magnet eddy current coupling. The research mechanism has the advantages of controllable rigidity, adjustable square load, non-centering and adjustable shafting, complete measurement and control data, multiple variable parameters, strong universality, compact structure and the like.
Description
Technical Field
The invention relates to the field of dynamic characteristics of permanent magnet eddy current coupling shafting, in particular to three-degree-of-freedom adjustable rigidity characteristic experimental research on a permanent magnet eddy current coupling.
Background
According to statistics, the misalignment causes more than 60% of rotary machine faults, the researched permanent magnet eddy current coupling is a non-physical contact transmission technology based on the eddy magnetic theory, and has the biggest characteristics of large misalignment tolerance, vibration reduction and isolation effects on misalignment of shafting transmission angles, misalignment of parallel angles and axial movement, and high-efficiency energy-saving effect on square loads. The change of the relative position between the driving rotor and the driven rotor of the permanent magnet eddy current coupling has important influence on the transmission characteristic of the shaft system and is directly related to various important parameters such as transmission load efficiency, vibration noise, misalignment tolerance rate, starting characteristic and the like. Therefore, an experimental platform for researching influence of relative position parameters of the permanent magnet eddy current coupler on transmission of the shaft system needs to be designed urgently, and the experimental platform has important significance on application and popularization of the permanent magnet eddy current coupler.
Disclosure of Invention
In view of the problems and the technical requirements, a three-degree-of-freedom controllable rigidity permanent magnet eddy current coupling shafting characteristic research mechanism is provided, and the relative position between a driving rotor and a driven rotor of the permanent magnet eddy current coupling can be changed through a three-degree-of-freedom adjusting mechanism, so that the magnetic coupling rigidity is changed; meanwhile, the permanent magnet eddy current coupling is connected with the adjustable square load mechanism to provide different load characteristics; the torque sensor, the rotating speed sensor and the vibration measuring sensor are arranged at different positions, so that the vibration state, the torque and the rotating speed of a shafting can be monitored; the combination of the platforms builds an experimental platform with comprehensive research contents for researching the characteristics of torque transmission, misalignment tolerance, vibration transmission and load matching of the permanent magnet eddy current coupling under different rigidity conditions, provides an experimental basis for determining the advantages of the permanent magnet eddy current coupling in shafting transmission, and achieves the purpose.
The invention provides a three-degree-of-freedom controllable rigidity permanent magnet eddy current coupling shafting characteristic research mechanism which comprises a three-degree-of-freedom adjusting mechanism, a driving rotor, a driven rotor, an output mechanism, a square load adjustable mechanism, a rotating speed sensor, a vibration measuring sensor and a control system. The three-degree-of-freedom adjusting mechanism is connected with the driving mechanism and the driving rotor of the permanent magnet eddy current coupling to realize displacement angle adjustment, so that the coupling rigidity between the driving rotor and the driven rotor is changed, the driven rotor is connected with the output mechanism and the square load adjustable mechanism, and the square load matching performance is realized.
The three-degree-of-freedom adjusting mechanism comprises an angle adjusting mechanism, a radial displacement adjusting mechanism, an axial displacement adjusting mechanism and an adapter plate; the adjusting mechanisms are connected in sequence through the adapter plate, the air gap between the driving rotor and the driven rotor of the permanent magnet eddy current coupler can be adjusted through the axial displacement adjusting mechanism, the change of the torque transmission coupling rigidity of the shafting is realized, the adjustment of the parallel misalignment of the shafting is realized through the radial displacement adjusting mechanism, the adjustment of the misalignment of the shafting is realized through the angle adjusting mechanism, the adopted angle and the radial adjusting platform are high in precision, the accurate adjustment of the misalignment of the shafting can be realized, and the coupling rigidity of the driving rotor and the driven rotor of the permanent magnet eddy current coupler can be fully changed through the ingenious combination of the three adjusting mechanisms. Thereby developing the shafting characteristic research.
The driving mechanism comprises a servo motor, a driving shaft, a driving mechanism angular contact ball bearing, a retainer ring, an end cover and a driving mechanism supporting seat, wherein the servo motor is matched with the input shaft by being fixed on the driving mechanism supporting seat;
the driving rotor comprises a driving yoke iron rotor and a copper rotor and is connected with the driving mechanism; the driven rotor comprises a driven yoke iron disc, a permanent magnet and a permanent magnet mounting disc and is connected with the output mechanism; the driving rotor and the driven rotor jointly form a permanent magnet eddy current coupling structure of a researched object, the permanent magnet of the driven rotor provides a magnetic field, the driving rotor rotates in the magnetic field to generate an alternating electromagnetic field, the alternating electromagnetic field is coupled with the permanent magnetic field to drive the driven rotor to rotate to transmit torque, and the distance between the driving rotor and the driven rotor is changed to change the coupling rigidity of the shafting transmission torque.
The output mechanism comprises an output shaft, an output mechanism bearing, an output mechanism end cover and an output mechanism supporting seat, wherein the output shaft is matched with the output mechanism supporting seat through an output mechanism angular contact ball bearing in the radial direction, the axial degree of freedom is limited through shaft shoulder design and the output mechanism end cover in the axial direction, and the output mechanism end cover is fixed on the output mechanism supporting seat through a bolt.
The square load adjustable mechanism comprises blades, a load permanent magnet mounting disc, a load permanent magnet, a load copper disc, a load yoke iron disc, a load shaft, a load angular contact ball bearing, a load end cover, a load axial driving device, a load mechanism supporting seat and a fixed torque sensor; the load permanent magnet mounting disc, the load permanent magnet, the load copper disc and the load yoke iron disc form a pair of permanent magnet eddy current couplings, the load permanent magnet mounting disc and the load permanent magnet are connected with the blades to form a load permanent magnet eddy current coupling driving rotor, the load copper disc and the load yoke iron disc are connected to form a load permanent magnet eddy current coupling driven rotor, and the load permanent magnet eddy current coupling driven rotor is arranged on the load axial driving device through the load shaft, the load angular contact ball bearing, the load end cover and the load mechanism supporting seat; the load permanent magnet eddy current coupling is controlled to move linearly, so that the clearance between a driving rotor and a driven rotor of the load permanent magnet eddy current coupling can be adjusted, the rotating speed of the blades is changed, and an adjustable square load is provided; and the fixed torque sensor is connected with a driven rotor of the load permanent magnet eddy current coupling to measure the load torque.
The rotating speed sensor can be placed at any part of the mechanism to measure the rotating speed, and is preferably fixed above the output mechanism supporting seat to measure the rotating speed of the output shaft; the vibration sensor is preferably fixed on the input mechanism supporting seat and the output mechanism supporting seat, the vibration of the input mechanism and the output mechanism is measured, the rotating speed, the torque and the vibration of the mechanism can be obtained through reasonable application of the sensor, an industrial personal computer, a plc, a motor driver and the torque sensor, the rotating speed sensor and the vibration measuring sensor form a measurement and control system, data interaction is realized between the upper computer and the lower computer through a shared memory, the motor and experimental data collection is realized through the measurement and control system, the collected experimental data is recorded and stored, and the measurement and control system is used as an important basis for key parameter performance research and evaluation.
The motor adopts a servo motor, the rotation of the motor is controlled through a motor driver, so that the rotating speed of an input shaft of the driving mechanism is controlled, the size of axial displacement output by the motor is controlled, the gap between the driving rotor and the driven rotor is controlled, and the coupling rigidity and the load are controlled.
The permanent magnet eddy current coupling shafting application research device has the advantages of wide application range, comprehensive research content and high research precision, can be widely applied to the application research of the permanent magnet eddy current coupling shafting, and promotes the development of the permanent magnet eddy current coupling.
Drawings
The present invention will be described with reference to the accompanying drawings. Wherein:
fig. 1 is a front view of a three-degree-of-freedom controllable rigidity permanent magnet eddy current coupler characteristic research mechanism provided by the invention.
Fig. 2 is a front view of a three-degree-of-freedom adjusting mechanism of a three-degree-of-freedom controllable stiffness permanent magnet eddy current coupler characteristic research mechanism provided by the invention.
Fig. 3 is a cross section of a driving mechanism of a characteristic research mechanism of a three-degree-of-freedom controllable-stiffness permanent magnet eddy current coupler system provided by the invention.
Fig. 4 is a cross section of the driving rotor and the driven rotor of the three-degree-of-freedom controllable-stiffness permanent magnet eddy current coupler characteristic research mechanism provided by the invention.
Fig. 5 is a cross-sectional view of an output mechanism of a three-degree-of-freedom controllable stiffness permanent magnet eddy current coupler characteristic research mechanism provided by the invention.
Fig. 6 is a cross-sectional view of a square load adjustable mechanism of a three-degree-of-freedom controllable stiffness permanent magnet eddy current coupler characteristic research mechanism provided by the invention.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the following described embodiments are exemplary only, and not restrictive.
As shown in fig. 1, the three-degree-of-freedom controllable rigidity permanent magnet eddy current coupler characteristic research mechanism includes a three-degree-of-freedom adjustment mechanism 1, a driving mechanism 2, a driving rotor 4, a driven rotor 5, an output mechanism 7, a square load adjustable mechanism 8, a torque sensor 10, a rotation speed sensor 6, a vibration measurement sensor 3, a shield 9, and an installation base plate 11. The driving rotor 4 and the driven rotor 5 form a pair of permanent magnet eddy current couplings to be researched, the driving mechanism 2 is arranged on the three-degree-of-freedom adjusting mechanism 1, and meanwhile, the driving mechanism 2 is connected with the driving rotor 4 to drive the driving mechanism to move, so that the three-degree-of-freedom adjusting mechanism 1 can adjust the displacement and the angle between the driving rotor 4 and the driven rotor 5, and the coupling rigidity adjustment is realized; the driven rotor 5 is coupled to a square load adjustable mechanism 8 through an output mechanism 7 so as to apply different loads to the driven rotor 5.
As shown in fig. 2, the three-degree-of-freedom adjusting mechanism 1 includes an axial displacement adjusting mechanism 12, an adapter plate 15, a radial displacement adjusting mechanism 13, and an angle adjusting mechanism 14; the axial displacement adjusting mechanism, the adapter plate 15, the radial displacement adjusting mechanism 13 and the angle adjusting mechanism 14 are sequentially connected to form a two-axis displacement and angle adjusting system, so that the accurate adjustment of shafting parallelism and angle misalignment and the change of coupling rigidity of the coupler are realized, the adjusting mode is simple and accurate, and the adjusting rigidity range is large.
As shown in fig. 3, the driving mechanism 2 includes a servo motor 16, a driving shaft 18, a driving mechanism angular contact ball bearing 19, a retainer ring 17, a driving mechanism end cover 20, and a driving mechanism support seat 21, the servo motor 16 is fixed on the driving mechanism support seat 21 and is matched with the input shaft 18, the input shaft 18 is radially matched with the driving mechanism support seat 21 through the driving mechanism angular contact ball bearing 19, and the axial motor end is limited in axial freedom degree by the retainer ring 17 and a shaft shoulder;
as shown in fig. 4, the driving rotor 4 includes a driving yoke rotor 22, a copper rotor 23; the driven rotor 5 comprises a permanent magnet 24, a permanent magnet mounting disc 25 and a driven yoke iron disc 26, and the driving rotor and the driven rotor jointly form a permanent magnet eddy current coupling structure of a researched object.
As shown in fig. 5, the output mechanism 7 includes an output shaft 27, an output mechanism bearing 28, an output mechanism end cover 29, and an output mechanism support base 30, the output shaft 27 is radially fitted to the output mechanism support base 30 through the output mechanism bearing 28, the axial degree of freedom is limited axially by a shoulder design and the output mechanism end cover 29, and the output mechanism end cover 29 is fixed to the output mechanism support base 30 through a bolt.
The square load adjustable mechanism 8 shown in fig. 6 comprises a blade 31, a load permanent magnet mounting disc 32, a load permanent magnet 33, a load copper disc 34, a load yoke iron disc 35, a load shaft 36, a load angular contact ball bearing 37, a load end cover 38, a load mechanism supporting seat 39, a load axial driving device 40, a z-shaped fixed plate 41, a left fixed plate 42 and a right fixed plate 43; the load permanent magnet mounting disc 32, the load permanent magnet 33, the load copper disc 34 and the load yoke iron disc 35 form a pair of load permanent magnet eddy current couplings, wherein the load permanent magnet mounting disc 32 and the load permanent magnet 33 are connected with the blades 31 to form a load permanent magnet eddy current coupling driving rotor; the load copper disc 34 and the load yoke iron disc 35 are connected to form a load permanent magnet eddy current coupling driven rotor and are installed in a load axial driving device 40 through a load shaft 36, a load angular contact ball bearing 37, a load end cover 38 and a load mechanism supporting seat 39; by controlling the load axial driving device 40 to move linearly, the gap between a driving rotor and a driven rotor of the load permanent magnet eddy current coupling can be adjusted, so that the rotating speed of the blade 31 is changed, and the adjustable square load is provided; one end of the torque sensor 10 is fixed on the loading mechanism supporting seat 39 through a z-shaped fixing plate 41, and the other end of the torque sensor 10 is connected with the load shaft 36 through a left fixing plate 42 and a right fixing plate 43 with bosses, so that the load shaft is fixed, the output shaft is loaded, and the load torque can be obtained in real time.
The protective cover 9 is arranged on the mounting bottom plate 11 through bolts, so that the safety of the experiment platform is ensured; the rotation speed sensor 6 is preferably fixed above the output mechanism supporting seat 30 through an adapter plate to measure the rotation speed of the output shaft; the vibration sensor 3 is preferably fixed to the driving mechanism support base 21 and the output mechanism support base 30, and measures the vibration of the input mechanism and the output mechanism.
The upper computer sends an instruction to control the rotating speed of the motor 16, the setting of the rotating speed is the setting of the rotating speed difference of the permanent magnet eddy current coupling, and the rotating speed difference changes the transmission torque and changes along with the change of the transmission torque; adjusting a displacement and angle adjusting platform, and setting the sizes of the parallel misalignment and the misalignment of the angle of a shaft system; issuing a command to control a load axial driving system, and setting the size of an air gap between a load driving rotor and a load driven rotor so as to change the size of load torque; the communication between the sensor and the upper computer can obtain experimental data, so that subsequent processing and analysis are facilitated; therefore, the designed experimental platform can adjust the rotating speed difference and the air gap of the permanent magnet eddy coupling, can adjust the parallel misalignment and the angle misalignment of the shafting, can steplessly adjust the square load torque, and can measure the rotating speed, the torque and the vibration of the mechanism, so that the change of the air gap of the permanent magnet eddy coupling structure of the researched object can be realized, the research on the misalignment tolerance and the load matching characteristic of the shafting can be realized, and the experimental platform is comprehensive and reliable in research content.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.
Claims (1)
1. The three-degree-of-freedom controllable rigidity permanent magnet eddy current coupling shafting characteristic research mechanism is characterized by comprising a three-degree-of-freedom adjusting mechanism (1), a driving mechanism (2), a driving rotor (4), a driven rotor (5), an output mechanism (7), a square load adjustable mechanism (8), a rotating speed sensor (6) and a vibration measuring sensor (3); the driving rotor (4) and the driven rotor (5) are a pair of permanent magnet eddy current couplings to be researched, the three-degree-of-freedom adjusting mechanism (1) is connected with the driving mechanism (2) and the driving rotor (4) and is used for adjusting relative position parameters between the driving rotor (4) and the driven rotor (5) so as to realize coupling rigidity adjustment, the driven rotor (5) is connected with the output mechanism (7) and the square load adjusting mechanism (8), the square load adjusting mechanism (8) provides adjustable loads for the driven rotor (5), experimental research can be developed under different loads, and the rotating speed sensor (6) and the vibration sensor (3) are used for measuring the rotating speed and vibration of the mechanism;
the three-degree-of-freedom adjusting mechanism (1) comprises: an angle adjusting mechanism (12), a radial displacement adjusting mechanism (13), an axial displacement adjusting mechanism (14) and an adapter plate (15); the angle adjusting mechanism (12) and the radial displacement adjusting mechanism (13) are integrated with the axial displacement adjusting mechanism (14) through the adapter plate (15), and relative position parameters such as axial, radial and angle between the driving rotor (4) and the driven rotor (5) can be controlled, so that the coupling rigidity between the driving rotor (4) and the driven rotor (5) is changed, and the adjustment of different coupling rigidities of the researched permanent magnet eddy current coupling is realized;
the square load adjustable mechanism (8) is characterized by comprising blades (31), a load permanent magnet mounting disc (32), a load permanent magnet (33), a load copper disc (34), a load yoke iron disc (35), a load shaft (36), a load angular contact ball bearing (37), a load end cover (38), a load mechanism supporting seat (39), a load axial driving device (40) and a fixed torque sensor (10); the load permanent magnet mounting disc (32), the load permanent magnet (33), the load copper disc (34) and the load yoke iron disc (35) form a pair of load permanent magnet eddy current couplings, wherein the load permanent magnet mounting disc (32) and the load permanent magnet (33) are connected with the blades (31) to form a load permanent magnet eddy current coupling driving rotor; the load copper disc (34) and the load yoke iron disc (35) are connected to form a load permanent magnet eddy current coupling driven rotor, and the load permanent magnet eddy current coupling driven rotor is installed in a load axial driving device (40) through a load shaft (36), a load angular contact ball bearing (37), a load end cover (38) and a load mechanism supporting seat (39); the load axial driving device (40) is controlled to move linearly, so that the gap between a driving rotor and a driven rotor of the load permanent magnet eddy current coupling can be adjusted, the rotating speed of the blades (31) is changed, and an adjustable square load is provided; and the fixed torque sensor (10) is connected with a driven rotor of the load permanent magnet eddy coupling to measure the load torque.
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| CN202211250339.8A CN115493837B (en) | 2022-10-13 | 2022-10-13 | Three-degree-of-freedom rigidity-controllable permanent magnet eddy current coupler shafting characteristic research mechanism |
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| CN202211250339.8A CN115493837B (en) | 2022-10-13 | 2022-10-13 | Three-degree-of-freedom rigidity-controllable permanent magnet eddy current coupler shafting characteristic research mechanism |
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2022
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