CN106807614A - A kind of torsional excitation device excited by electromagnetic actuators - Google Patents
A kind of torsional excitation device excited by electromagnetic actuators Download PDFInfo
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- CN106807614A CN106807614A CN201710050329.2A CN201710050329A CN106807614A CN 106807614 A CN106807614 A CN 106807614A CN 201710050329 A CN201710050329 A CN 201710050329A CN 106807614 A CN106807614 A CN 106807614A
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- electromagnetic actuators
- exciting
- brush
- force
- electricity polar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
Abstract
A kind of torsional excitation device excited by electromagnetic actuators, the center of the exciting arm of force is fixedly connected with the center of circle of exciting tub bottom surface, first electromagnetic actuators and the second electromagnetic actuators are separately fixed at the two ends of the exciting arm of force, positive electricity polar ring and negative electricity polar ring are arranged on and are fixed on the outer tube wall of exciting tub, positive electricity polar ring and negative electricity polar ring are connected by wire with the first electromagnetic actuators and the second electromagnetic actuators respectively, positive brush and negative brush are all fixed on brush base, positive brush is contacted with positive electricity polar ring, negative brush is contacted with negative electricity polar ring, positive brush and negative brush are connected to power supply, rotating shaft one end is fixedly connected on the circle centre position of exciting tub bottom surface.Rotating shaft is rotated by power source, and the exciting arm of force and frame are rotated together with due to being rigidly connected with rotary shaft with rotating shaft.The periodicity tangential force that actuator is produced causes cyclic torque in circle centre position so that rotating shaft is subject to torsional excitation.Always realize that countershaft applies the function of torsional excitation, simple and compact for structure, good reliability.
Description
Technical field
The present invention relates to mechanical field, particularly a kind of torsional excitation device excited by electromagnetic actuators.
Background technology
Many occasions all can carry out torsional oscillation loading using the mode countershaft part of torsional excitation in engineering, and such as engine is bent
The fatigue test of the rotary parts such as axle, steam turbine generator and marine shafting, twisting vibration experiment, carry out model analysis, vibration and ring
Should analyze, to understand the performance of these shafting componentses, simulate its dynamic performance under some operating modes, obtain correlation test number
According to.The residual stress of rotating shaft part is eliminated using the dynamic stress of torsion coupling resonance generation, it is right to be needed in implementation process
Rotating shaft applies torsional excitation, when motor rotation frequency is equal to the difference of natural bending frequency and torsional natural frequency, the torsion of applying
Excitation of shaking is equal to torsional natural frequency, theoretical by Torsion Coupling, and eccentrically weighted shaft can simultaneously excite flexural resonance, flexural resonance and torsion
Turn resonance mutually to strengthen, produce enough dynamic stress.At present use torsional activator have electromagnetic exciter, Pneumatic vibration exciter,
Hydraulic vibration exciter, but these exciter structures are complicated, reliability is not high, expensive, and maintenance cost is high, performance difficulty, difficult
Used with popularizing.
The content of the invention
It is an object of the invention to provide a kind of torsional excitation device excited by electromagnetic actuators, by rotary shaft and exciting
Rigidity of frame is connected, and the vibration arm of force is connected with rigidity of frame, and two actuators are connected firmly with exciting arm of force end respectively, respectively with the arm of force
Centered on the center of circle, both sides are symmetrically installed.Rotating shaft is rotated by power source, and the exciting arm of force and frame with rotary shaft due to rigidly connecting
Connect, rotated together with rotating shaft.The periodicity tangential force that actuator is produced causes cyclic torque in circle centre position so that rotating shaft is subject to
Torsional excitation.
The present invention reaches above-mentioned purpose by the following technical programs：
A kind of torsional excitation device excited by electromagnetic actuators, including rotating shaft, exciting tub, the exciting arm of force, positive electricity polar ring,
Negative electricity polar ring, the first electromagnetic actuators, the second electromagnetic actuators, positive brush, negative brush and brush base；
The center of the exciting arm of force is fixedly connected with the center of circle of exciting tub bottom surface, and the first electromagnetic actuators and the second electromagnetism are caused
Dynamic device is separately fixed at the two ends of the exciting arm of force,
Positive electricity polar ring and negative electricity polar ring are arranged on and are fixed on the outer tube wall of exciting tub, and positive electricity polar ring and negative electricity polar ring divide
Not Tong Guo wire be connected with the first electromagnetic actuators and the second electromagnetic actuators,
Positive brush and negative brush are all fixed on brush base, and positive brush is contacted with positive electricity polar ring, negative brush and negative electrode
Ring is contacted, and positive brush and negative brush are connected to power supply,
Rotating shaft one end is fixedly connected on the circle centre position of exciting tub bottom surface.
The exciting arm of force and it is separately mounted to first electromagnetic actuators at exciting arm of force two ends and second Electromagnetically actuated
Device is with the Central Symmetry that is centrally formed of the exciting arm of force, and then countershaft produces moment of torsion.
In addition to the junction of center and exciting tub, remaining two end portions is in hanging shape to the exciting arm of force
State.
It is of the invention to have the prominent advantages that：
Vibrator described in the design is made up of component of machine mostly, and reliability is high, simple and compact for structure, easy for installation
Simple and direct, parts intensity is high, is adapted to larger exciting scope, and the exciting arm of force is adjustable, and actuator arrangement mode is adjustable,
The exciting force and excited frequency of actuator are controlled by outside variable-frequency power sources, can be adjusted according to the actual conditions of experiment parts
Whole, flexibility is strong, low cost, and maintenance is easy, greatly expands the range of application of torsional activator.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the torsional excitation device excited by electromagnetic actuators of the present invention.
Fig. 2 is the structural representation of the torsional excitation device excited by electromagnetic actuators of the present invention.
Fig. 3 is the enlarged diagram of location A in Fig. 2.
Fig. 4 is the front view of the torsional excitation device excited by actuator of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is described further to technical scheme.
A kind of torsional excitation device excited by electromagnetic actuators, including rotating shaft 1, exciting tub 2, the exciting arm of force 3, positive electrode
Ring 6, negative electricity polar ring, the first electromagnetic actuators 4, the second electromagnetic actuators 5, positive brush 9, negative brush and brush base 7；
The center of the exciting arm of force 3 is fixedly connected with the center of circle of the bottom surface of exciting tub 2, and the first electromagnetic actuators 4 and second are electric
Magnetic actuator 5 is separately fixed at the two ends of the exciting arm of force 3,
Positive electricity polar ring 6 and negative electricity polar ring are arranged on and are fixed on the outer tube wall of exciting tub 2, positive electricity polar ring 6 and negative electrode
Ring is connected by wire 9 with the first electromagnetic actuators 4 and the second electromagnetic actuators 5 respectively,
Positive brush 9 and negative brush are all fixed on brush base 7, and positive brush 9 is contacted with positive electricity polar ring 6, negative brush with it is negative
Electrode retaining collar is contacted, and positive brush 9 and negative brush are connected to power supply,
The one end of rotating shaft 1 is fixedly connected on the circle centre position of the bottom surface of exciting tub 2.
Further, the exciting arm of force 3 and it is separately mounted to the He of the first electromagnetic actuators 4 at the two ends of the exciting arm of force 3
Second electromagnetic actuators 5 are with the Central Symmetry that is centrally formed of the exciting arm of force 3, and then countershaft 1 produces moment of torsion.
Further, the exciting arm of force 3 is in addition to the junction of center and exciting tub 2, remaining two end portions
In vacant state.
During work, rotating shaft 1 is rotated by power source, and rotating shaft 1 drives torsional excitation device to rotate, the first electromagnetic actuators 4,
The power line of the second electromagnetic actuators 5 is connected through the hole in exciting tub 2 by wire 9 with positive electricity polar ring 6 and negative electricity polar ring,
When rotating shaft 1 rotates, positive electricity polar ring 6 and negative electricity polar ring are remained and contacted with positive brush 9 and negative brush, so as to be caused to the first electromagnetism
Dynamic device 4, the second electromagnetic actuators 5 provide power supply and signal.First electromagnetic actuators 4, the connection power supply of the second electromagnetic actuators 5 are opened
Vibration is produced after dynamic so that the exciting arm of force 3 vibrates, and then countershaft 1 produces moment of torsion.First the 4, second electricity of electromagnetic actuators
The exciting force that magnetic actuator 5 is produced produces driving torque by the exciting arm of force 3, and rotating shaft 1 can be made to be subject to different size, frequency
Torsional excitation, so as to realize countershaft 1 apply torsional excitation function.The exciting frame is cylinder barrel shaped, positive electricity polar ring 6
It is coaxially mounted on the cylindrical outer wall face of cylinder barrel shaped exciting frame with negative electricity polar ring 15, one end of cylinder barrel shaped exciting frame sets
There are bottom surface or two ends to be designed with bottom surface.
The twisting vibration exported by torsional excitation device is applied in the rotating shaft 1 of the rotation of high rigidity, whenThe rotary frequency of rotating shaft 1 RateIt is equal toNatural bending frequencyWithTorsional natural frequencyDifference when, theoretical by torsion coupling resonance, a frequency is equal to reverses solid
The torsional excitation for having frequency can be while have excited flexural resonance, flexural resonance is mutually strengthened with torsional resonance, generation is enough
Dynamic stress eliminates the residual stress of high rigidity rotating shaft 1.
Claims (3)
1. a kind of torsional excitation device excited by electromagnetic actuators, it is characterised in that including rotating shaft, exciting tub, the exciting arm of force,
Positive electricity polar ring, negative electricity polar ring, the first electromagnetic actuators, the second electromagnetic actuators, positive brush, negative brush and brush base；
The center of the exciting arm of force is fixedly connected with the center of circle of exciting tub bottom surface, the first electromagnetic actuators and the second electromagnetic actuators
The two ends of the exciting arm of force are separately fixed at,
Positive electricity polar ring and negative electricity polar ring are arranged on and are fixed on the outer tube wall of exciting tub, and positive electricity polar ring and negative electricity polar ring lead to respectively
Wire is crossed to be connected with the first electromagnetic actuators and the second electromagnetic actuators,
Positive brush and negative brush are all fixed on brush base, and positive brush is contacted with positive electricity polar ring, and negative brush connects with negative electricity polar ring
Touch, positive brush and negative brush are connected to power supply,
Rotating shaft one end is fixedly connected on the circle centre position of exciting tub bottom surface.
2. the as claimed in claim 1 torsional excitation device excited by electromagnetic actuators, it is characterised in that the exciting arm of force with
And it is separately mounted to the first electromagnetic actuators and the second electromagnetic actuators being centrally formed with the exciting arm of force at exciting arm of force two ends
Central Symmetry, and then countershaft produces moment of torsion.
3. the torsional excitation device for being excited by electromagnetic actuators as claimed in claim 1, it is characterised in that the exciting arm of force is removed
Outside center and the junction of exciting tub, remaining two end portions is in vacant state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710050329.2A CN106807614B (en) | 2017-01-20 | 2017-01-20 | Torsional vibration exciter excited by electromagnetic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710050329.2A CN106807614B (en) | 2017-01-20 | 2017-01-20 | Torsional vibration exciter excited by electromagnetic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106807614A true CN106807614A (en) | 2017-06-09 |
| CN106807614B CN106807614B (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710050329.2A Active CN106807614B (en) | 2017-01-20 | 2017-01-20 | Torsional vibration exciter excited by electromagnetic actuator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA201200760A1 (en) * | 2010-07-13 | 2013-02-28 | Федеральное Государственное Бюджетное Учреждение Науки Институт Машиноведения Им. А.А. Благонравова Российской Академии Наук | Resonant engine of torsional oscillations |
| CN104032125A (en) * | 2013-12-17 | 2014-09-10 | 广西大学 | Method for exciting vibration time efficiency of transverse and torsional vibration coupling resonance by alternate torque |
| CN204535980U (en) * | 2015-05-04 | 2015-08-05 | 三峡大学 | Multiple degrees of freedom torsional vibration damper damping property test board |
| CN105527088A (en) * | 2016-01-18 | 2016-04-27 | 天津大学 | Fatigue test stand for torsion damper and fatigue test method thereof |
| CN106197915A (en) * | 2016-06-24 | 2016-12-07 | 北京航空航天大学 | A kind of position the method that oscillating aging controls timeliness part fatigue life |
| CN206578001U (en) * | 2017-01-20 | 2017-10-24 | 广西大学 | A kind of torsional excitation device excited by electromagnetic actuators |
-
2017
- 2017-01-20 CN CN201710050329.2A patent/CN106807614B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA201200760A1 (en) * | 2010-07-13 | 2013-02-28 | Федеральное Государственное Бюджетное Учреждение Науки Институт Машиноведения Им. А.А. Благонравова Российской Академии Наук | Resonant engine of torsional oscillations |
| CN104032125A (en) * | 2013-12-17 | 2014-09-10 | 广西大学 | Method for exciting vibration time efficiency of transverse and torsional vibration coupling resonance by alternate torque |
| CN204535980U (en) * | 2015-05-04 | 2015-08-05 | 三峡大学 | Multiple degrees of freedom torsional vibration damper damping property test board |
| CN105527088A (en) * | 2016-01-18 | 2016-04-27 | 天津大学 | Fatigue test stand for torsion damper and fatigue test method thereof |
| CN106197915A (en) * | 2016-06-24 | 2016-12-07 | 北京航空航天大学 | A kind of position the method that oscillating aging controls timeliness part fatigue life |
| CN206578001U (en) * | 2017-01-20 | 2017-10-24 | 广西大学 | A kind of torsional excitation device excited by electromagnetic actuators |
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| CN106807614B (en) | 2022-02-25 |
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