CN2842395Y - Rotary magnetic-field type rotor combined torsional exciting device - Google Patents
Rotary magnetic-field type rotor combined torsional exciting device Download PDFInfo
- Publication number
- CN2842395Y CN2842395Y CN 200520122924 CN200520122924U CN2842395Y CN 2842395 Y CN2842395 Y CN 2842395Y CN 200520122924 CN200520122924 CN 200520122924 CN 200520122924 U CN200520122924 U CN 200520122924U CN 2842395 Y CN2842395 Y CN 2842395Y
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- motor
- stator
- torsional
- bearing
- rotor
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Abstract
The utility model relates to a transmission and control technology of shafting torsional excitation in an electric mechanical system, which provides a rotary magnetic field type rotor shafting torsional vibration exciter. The utility model is provided with a motor with a lengthened rotor shaft, and both ends of the motor are respectively provided with two rolling bearings. A housing body of a motor stator is provided with a stator rotating rod, and the rotating rod and a connecting rod are in universal connection. A main shaft of the motor is connected with an external shafting by a shaft coupling. An output signal of a signal generator is connected with an input end of a power amplifier, and an output end of the power amplifier is connected with a linear exciter. The linear vibration generated by the linear exciter enables the motor stator to generate torsional vibration by the connecting rod and the stator rotating rod. The utility model is characterized in that the torsional vibration can be superimposed on a rotating magnetic field generated by the stator by comparatively low cost, and a rotating moment generated by the rotor can generate a torsional moment simultaneously.
Description
Technical field
The utility model relates to the transmission and the control technology of electrical-mechanical system center shafting torsional vibration excitation.
Background technology
In industries such as Aeronautics and Astronautics, electric power, machinery, engine, the torsional oscillation of axle system is the problem of very significant.The torsional oscillation of axle system is controlled bad meeting and is caused catastrophic consequence.All be unable to do without torsional activator for the analysis of shafting torsional oscillation and the exploitation of vibroshock.The early stage torsional excitation device that occurs mainly is a mechanical type, as universal joint type, and eccentric mass type and rock type.Their shortcoming is that frequency range is narrow, power is little, parts wear and tear easily, processed complex.The 1970s and 1980s, begin to have occurred to have the torsional oscillation device of electromagnetism and hydraulic pressure excitation in the world.But these devices are except having limitation separately, all can not simulate the torsional vibration characteristic of the axle system of studying, and can not carry out the frequency adjusting damping performance test of dynamic shock absorber.Torsional activator in the practical application is usually operated at the state that axle system does not rotate, and is that actual working state is different with axle.For example utility model patent (200420023056.0) " torsional vibration damper performance test stand vibrator " realizes that by hydraulic way the rotation of axle system produces torsional excitation simultaneously, still this hydraulic system technical sophistication, cost height.At this situation, the utility model proposes the technical scheme that adopts the rotating magnetic field torsional activator, can realize that axle ties up to static and rotary state produces torsional excitation down.
Summary of the invention
The purpose of this utility model provides the rotor axial system torsional linear vibration exciter that also produces torsional oscillation moment on rotor in a kind of moment that rotates, this vibrator can axle system rotate or stationary state under work.
Describe below in conjunction with 1～2 pair of know-why of the present utility model of accompanying drawing.The revolving-field type rotor axial system torsional activator is made up of motor 1, bearing 2, bearing spider 3, shaft coupling 4, rotating rod of stator 5, link rod 6, linear vibration exciter 7, power amplifier 8, low frequency generator 9, electric machine speed regulation frequency converter 10, transfer switch 11, direct supply 13.Motor 1 is the three phase electric machine with elongated rotor axle.On the two ends of the elongated rotor axle of motor 1, rolling bearing 2-1 and rolling bearing 2-2 are installed respectively, make motor can lubricate rotation.On motor 1 stator case rotating rod of stator 5 is housed, rotating rod of stator 5 and 6 universal connections of link rod, promptly link rod 6 can freely rotate in low-angle with rotating rod of stator 5 junctions.Motor 1 main shaft is 12 to be connected by shaft coupling 4 and external shaft.The output signal of signal generator 9 connects the signal input part of power amplifier 8, and the output of power amplifier 8 connects linear vibration exciter 7, for linear vibration exciter 7 provides driving power.It is the twisting vibration at center that the straight-line oscillation that linear vibration exciter 7 produces produces with the rotor axis of electric stator of motor 1 by link rod 6 and rotating rod of stator 5.The rotation of motor 1 rotor is to be driven by the rotating magnetic field that stator produces, the twisting vibration that rotating magnetic field that motor 1 produces and motor stator produce superposes, also produce torsional oscillation moment in the time of the moment that rotates on the rotor, it is 12 that torsional oscillation moment passes to external shaft by motor shaft and shaft coupling 4, finishes the torsional vibration excitation effect thus.Signal generator 9 can produce the accumulation signal of specific waveforms, frequency, amplitude.Frequency converter 10 is for three phase electric machine provides power supply, regulates motor speeds by frequency converter 10, makes the rotor of motor 1 will be according to given rotational speed.Motor 1 supports by bearing 2 and bearing 3 thereof, and motor leaves equal can freely rotation of stator, rotor that pedestal can make motor 1.
When the armature spindle quiescent operation, any two direct supplys 13 that are connected make its electric current reach ratings (direct current) in the three-phase power line of motor 1, this moment, stator produced a fixed magnetic field, when stator twists, only produced torsional oscillation moment and moment without spin on rotor.Power change-over switch among Fig. 2 11 is switched to direct supply one side, can become the static shaft duty.
Description of drawings
Accompanying drawing 1 is a sketch for the utility model revolving-field type rotor axial system torsional activator axle.
Accompanying drawing 2 is each parts connected system figure of the utility model.
Embodiment
The structure of present embodiment connects each parts according to accompanying drawing 2 as shown in Figure 1 and Figure 2.Motor 1 is the three phase squirrel cage motor of extension shaft, the length optical axis bearing of motor shaft and the size of shaft coupling and decide, and the axial length of present embodiment is than the common electrical arbor two ends 50mm that extends respectively.Linear vibration exciter 7, power amplifier 8, low frequency generator 9, frequency converter 10, direct supply 13 are common apparatus and product, and two bearing 2-1,2-2 are ball bearing.Duty is divided into has rotation of axle system and axle system not to have the rotation two states.Axle system does not have when rotation: transfer switch 11 is switched to direct supply 13, and it is static that motor stator produces the stationary magnetic field axle.This moment, power amplifier 8 drove linear vibration exciter 7 vibrations according to testing requirements setting signal acoustical generator 9 output signal frequency, amplitude, and drove link rod 6 vibrations thus, made the stator of motor 1 produce twisting vibration.Regulate frequency, the amplitude of torsional oscillation by conditioning signal acoustical generator 9 output signal frequency, amplitude.The magnetic field that is produced by motor 1 stator twisting vibration makes rotor produce twisting motion, and the magnetic field twisting motion produces torsional oscillation moment on rotor.Axle is when being rotation work: transfer switch 11 is switched to frequency converter 10, make motor 1 drive axle system and rotate, thereby and be that rotating speed produces torsional oscillation moment identical when not having rotation with axle system by regulating frequency converter 10 regulating shafts.
Characteristics of the present utility model and usefulness are, utilize three phase electric machine and linear vibration exciter to produce the rotating magnetic field that is superimposed with torsional oscillation.The three phase electric machine that the utility model system adopts, linear vibration exciter, signal generator or the like all are the universal products, and required processing component is also very simple.Be implemented in the twisting vibration that superposes on the rotating magnetic field that stator produces with lower cost, thereby produce torsional moment when making rotor produce turning moment.
Claims (2)
1. revolving-field type rotor axial system torsional activator, by motor (1), bearing (2), bearing spider (3), shaft coupling (4), link rod (6), linear vibration exciter (7), power amplifier (8), low frequency generator (9), electric machine speed regulation frequency converter (10), transfer switch (11) is formed, it is characterized in that rolling bearing (2-1) and rolling bearing (2-2) being installed respectively at the motor with elongated rotor axle (1) two ends, on motor (1) stator case rotating rod of stator (5) is housed, rotating rod of stator (5) and universal connection of link rod (6), motor (1) main shaft is connected with external shaft system (12) by shaft coupling (4), the output signal of signal generator (9) connects the input end of power amplifier (8), the output of power amplifier (8) connects linear vibration exciter (7), for linear vibration exciter (7) provides driving power, the straight-line oscillation that linear vibration exciter (7) produces makes the stator of motor (1) produce twisting vibration by link rod (6) and rotating rod of stator (5).
2. according to claim 1 or described revolving-field type rotor axial system torsional activator, it is characterized in that described motor (1) is a three phase electric machine, motor (1) supports by bearing (2) and bearing (3) thereof, and motor leaves equal can freely rotation of stator, rotor that pedestal can make motor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122924 CN2842395Y (en) | 2005-11-01 | 2005-11-01 | Rotary magnetic-field type rotor combined torsional exciting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122924 CN2842395Y (en) | 2005-11-01 | 2005-11-01 | Rotary magnetic-field type rotor combined torsional exciting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2842395Y true CN2842395Y (en) | 2006-11-29 |
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ID=37446277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520122924 Expired - Lifetime CN2842395Y (en) | 2005-11-01 | 2005-11-01 | Rotary magnetic-field type rotor combined torsional exciting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2842395Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374216C (en) * | 2005-09-21 | 2008-03-12 | 天津大学 | Rotor axial system torsional activator |
| CN102564727A (en) * | 2011-12-29 | 2012-07-11 | 中国科学院长春光学精密机械与物理研究所 | Wind resistance simulation test device for aviation photoelectric measuring device |
-
2005
- 2005-11-01 CN CN 200520122924 patent/CN2842395Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374216C (en) * | 2005-09-21 | 2008-03-12 | 天津大学 | Rotor axial system torsional activator |
| CN102564727A (en) * | 2011-12-29 | 2012-07-11 | 中国科学院长春光学精密机械与物理研究所 | Wind resistance simulation test device for aviation photoelectric measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080312 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |