CN106969086B - A kind of magnetorheological torsional vibration damper for engine - Google Patents
A kind of magnetorheological torsional vibration damper for engine Download PDFInfo
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- CN106969086B CN106969086B CN201710186570.8A CN201710186570A CN106969086B CN 106969086 B CN106969086 B CN 106969086B CN 201710186570 A CN201710186570 A CN 201710186570A CN 106969086 B CN106969086 B CN 106969086B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
- F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
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- General Engineering & Computer Science (AREA)
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- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of magnetorheological torsional vibration damper for engine, including magnetorheological torsional vibration damper main structure and including voltage adaptive controlling module, voltage adaptive controlling module includes first annular shell, control transformer, voltage comparator, first collector ring, second collector ring, AC-DC converter and adaptive brush assembly of electric, voltage comparator has first input end, second input terminal, third input terminal, 4th input terminal and output end, first collector ring and the second collector ring are separately positioned on the lateral wall of first annular shell, the first annular cavity of left end opening is provided on first annular shell, the opening of first annular cavity is provided with the first cover board for being open and being covered；Advantage be can automatic adjusument damping force, be of relatively low cost, frequent big load rigid shock, powered stable will not be generated to inertia annulus, and energy loss is smaller.
Description
Technical field
The present invention relates to a kind of dampers, more particularly, to a kind of magnetorheological torsional vibration damper for engine.
Background technique
Elasticity of torsion system of the crankshaft as engine, is usually in turn connected to form by several crank throws.In engine
In the operating of the high speed of (such as diesel engine), inevitably there is certain natural frequency of vibration in crankshaft, and crankshaft can bear gas pressure
Power generate disturbance torque, and the size and Orientation of disturbance torque be it is periodically variable, lead to crank throw instantaneous angular velocity
Variation.Since crankshaft rear end is equipped with flywheel, flywheel inertia is very big, therefore flywheel instantaneous angular velocity is regarded as uniformly, bent at this time
It turns and just generates opposite torsionoscillation, i.e. torsional oscillation to flywheel.When disturbance torque is equal with the natural frequency of vibration of crankshaft, crankshaft is just produced
Raw resonance, makes engine power incur loss, and is aggravated by the gear wear that crankshaft drives, or even crankshaft is made to fracture because of resonance.
Currently, mainly by crankshaft mounting dampers absorb the energy of its torsional oscillation, avoid generating resonance.Publication No.
A kind of magnetorheological torsional vibration damper for engine is disclosed for the Chinese invention patent of CN102168736A, which includes annular
Shell, inertia annulus, annular antifriction bush and ring shaped conductive coil, the side wall on toroidal shell are provided with coaxial annular
Chamber, inertia annulus, annular antifriction bush and loop coil are co-axially located in annular compartment, annular antifriction bush and annular chamber
The outer wall of room is fixedly connected, and inertia annulus is located in annular antifriction bush, and inertia annulus axle is to fixation, but inertia annulus can be opposite
It is rotated in annular antifriction bush along central shaft, ring shaped conductive coil is mounted in inertia annulus, and ring shaped conductive coil takes electricity
End is contacted with antifriction bush always, and magnetorheological fluid is full of in the gap of annular compartment and inertia annulus.Annular antifriction bush is connected to
Conducting wire, the conducting wire are drawn outside toroidal shell by insulated conduit.In vibration damping, crankshaft pass through toroidal shell inner hole, power supply with
Conducting wire is connected as ring shaped conductive coil and provides operating voltage, and ring shaped conductive coil generates magnetic field and control magnetic current and liquid flow after being powered
Dynamic characteristic realizes the adjustment to crankshaft damping due to rotation power.
But above-mentioned magnetorheological torsional vibration damper for engine has the following problems: one, the damper is only executing agency,
Itself can not control changes of magnetic field according to the real-time speed conditions of engine, it is necessary to it is real to be equipped with detecting and controlling system detection engine
When revolving speed, and control power supply and generate corresponding voltage signal to realize that magnetic field changes, thus system bulky complex leads to vibration damping system
System higher cost；Two, ring shaped conductive coil and annular antifriction bush use contact way to take power, and inertia annulus opposed annular subtracts
Mill lining set can rotate, so (there are gaps in most of region, and part is again for the fit system being necessarily gap-matched between the two
Contact electricity getting), and crankshaft has the circular runout of periodically big intensity in high-speed cruising, can generate to inertia annulus frequent
Big load rigid shock, on the one hand will lead to the wear-out failure of inertia annulus, reduce service life, another aspect inertia annulus with
The clearance fit of annular antifriction bush is under actual working environment, since contact area real-time change will lead to power supply instability
Problem；Three, the clearance fit of inertia annulus and annular antifriction bush can be such that inertia annulus and annular anti-attrition serves as a contrast in actual operation
It covers surface and covers one layer of damping liquid film, since damping fluid is insulating liquid, input current is a large amount of by that can generate when damping liquid film
Heat hinders electric current to pass through, increase energy loss.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind can automatic adjusument damping force, be of relatively low cost, no
Frequent big load rigid shock, powered stable, and the magnetorheological torsion of the lesser engine of energy loss can be generated to inertia annulus
Shake damper.
The technical scheme of the invention to solve the technical problem is: a kind of magnetorheological torsional vibration damper for engine,
Including magnetorheological torsional vibration damper main structure, the magnetorheological torsional vibration damper for engine further includes voltage adaptive controlling mould
Block, the voltage adaptive controlling module include first annular shell, control transformer, voltage comparator, the first collector ring, second
Collector ring, AC-DC converter and adaptive brush assembly of electric, the voltage comparator have first input end, the second input terminal,
Third input terminal, the 4th input terminal and output end, first collector ring and second collector ring are separately positioned on institute
On the lateral wall for the first annular shell stated, the first annular cavity of left end opening is provided on the first annular shell,
The opening of the first annular cavity is provided with the first cover board for being open and being covered；The control transformer is mounted on
In the first annular cavity, the control transformer have primary coil and secondary coil, the primary coil and
The secondary coil is ring-type, and the primary coil has first input end and the second input terminal, the secondary wire
Circle has the first output end and second output terminal, and the first input end of the primary coil and first collector ring connect
It connects, the second input terminal of the primary coil is connected with second collector ring, and the right side of the secondary coil is by interior
To being disposed with the first conducting ring, the second conducting ring, third conducting ring and the 4th conducting ring outside, first conducting ring,
Second conducting ring, the third conducting ring and the 4th conducting ring is not in contact with each other, first conducting ring,
The right side of second conducting ring, the third conducting ring and the 4th conducting ring is in the same plane, institute
The first conducting ring stated is connected by the first conductor wire with the secondary coil, and second conducting ring is conductive by second
Line is connected with the secondary coil, and the third conducting ring is connected by third conductor wire with the secondary coil, institute
The 4th conducting ring stated is connected by the 4th conductor wire with the first output end of the secondary coil, the secondary coil position
Coil turn between the second output terminal of first conductor wire and the secondary coil is its total number of coils
A quarter, the secondary coil are located between the second output terminal of second conductor wire and the secondary coil
Coil turn is 2/4ths of its total number of coils, and the secondary coil is located at the third conductor wire and time
Coil turn between the second output terminal of grade coil is 3/4ths of its total number of coils.The adaptive brush assembly of electric
Comprising retainer and three adaptive units, the retainer is arranged in the first annular cavity, the holding
There are three installing port, installing port described in three is radially extended along the first annular cavity for setting on frame, per adjacent two
Angle between a installing port is that adaptive unit described in 120 degree, three corresponds three installing ports described in being mounted on
Interior, the adaptive unit includes spring and brush, the outside of one end of the spring and the first annular cavity
Wall is fixedly connected, and the other end of the spring is fixedly connected with the brush, and the brush stress can be in the peace
Moving radially along the first annular cavity in mouth, original state are filled, the brush connects with first conducting ring
Touching, the spring are in nature stretched condition, and when the brush stress is mobile, the spring is compressed, described
Brush is successively contacted with second conducting ring, the third conducting ring and the 4th conducting ring；Described in three
The first input end of the spring of adaptive unit and the voltage comparator, the second input terminal and third input terminal correspond
Connection, the 4th input terminal of the voltage comparator are connected with the second output terminal of the secondary coil, the voltage
The output end of comparator is connected with the input terminal of the AC-DC converter, the output end of the AC-DC converter with it is described
Magnetorheological torsional vibration damper main structure be connected as its provide operating voltage.
The magnetorheological torsional vibration damper main structure includes the second toroidal shell, inertia annulus, the first magnet exciting coil
With the second magnet exciting coil, the left end of second toroidal shell is connected with the right end of the first annular shell, described
Be provided with the second annular cavity of right-end openings on second toroidal shell, the opening of second annular cavity be provided with by
Its second cover board covered that is open, is provided with first annular installation cavity on the inner sidewall of second annular cavity, described
First magnet exciting coil is mounted in the first annular installation cavity, and the is provided on the lateral wall of second annular cavity
Second ring installation cavity, second magnet exciting coil are mounted in the annular installation cavity of described second, and the inertia annulus is set
It sets in second annular cavity, is provided with first annular groove on the left side of the inertia annulus, described
It is provided with the first rubber washer in one annular groove, the bottom of first rubber washer and second annular cavity connects
It touches, is provided with second annular groove on the right side of the inertia annulus, is provided with second in the second annular groove
Rubber washer, second rubber washer and second cover board contact, the inertia annulus and second ring
Be filled with magnetorheological fluid between shape cavity, the output end of the AC-DC converter respectively with first magnet exciting coil and
The second magnet exciting coil connection.
The first wear ring, the inside of second annular cavity are attached on the lateral wall of second annular cavity
The second wear ring, the inner wall of the inertia annulus and second wear ring contact, the inertial circle are attached on wall
The outer wall of ring and first wear ring contact.In the structure, by the setting of the first wear ring and the second wear ring, reduce
The friction of inertia rings and the second toroidal shell that damper naturally droops when starting, prevents the metallics in inertia rings long-term
Abrasion falls off in work, pollutes magnetorheological fluid.
Compared with the prior art, the advantages of the present invention are as follows setting voltage adaptive controlling module is passed through, before the engine is started up,
First collector ring and the second collector ring access external communication electricity, make voltage adaptive controlling module be powered, in low speed after engine start
When rotation, the centrifugal force that brush generates under the induced effect of crankshaft is not enough to overcome the elastic force of spring, and brush rests at this time
Initial position is contacted with the first conducting ring, at this point, the coiling of a quarter the number of turns is in work in the secondary coil of control transformer
Make state, output voltage is minimum, is gradually increased as speed of crankshaft increases centrifugal force to the elastic force for overcoming spring, at this point, spring
It is compressed, brush is mobile to spring direction, connects in spring moving process according to real-time revolving speed, brush or with the second conducting ring
Touching, either contacts with third conducting ring or contacts with the 4th conducting ring, and the secondary coil for controlling transformer is in effectively work
Number of turns increase, output voltage becomes larger, and thus voltage adaptive controlling module can increase defeated with the increase of actual engine speed
Voltage out, three road voltages of voltage adaptive controlling module output export wherein two-way or the above phase of two-way after over-voltage comparator
Same voltage guarantees voltage stabilization, electricity to AC-DC conversion module to reduce voltage adaptive controlling module with the deviation of crankshaft vibration
Comparator output voltage is pressed to provide stable work electricity for magnetorheological torsional vibration damper main structure after AC-DC conversion module
Pressure makes magnetorheological torsional vibration damper main structure generate the strong and weak magnetic field of corresponding size input voltage, changes damping force, thus originally
Invention can automatic adjusument damping force, be of relatively low cost that cost is relatively low, it is rigid to generate frequent big load to inertia annulus
Property impact, powered stable, and energy loss is smaller.
Detailed description of the invention
Fig. 1 is the cross-sectional view of magnetorheological torsional vibration damper for engine of the invention；
Fig. 2 is the structure chart of the adaptive brush assembly of electric of magnetorheological torsional vibration damper for engine of the invention；
When Fig. 3 slowly runs for crankshaft, the adaptive brush assembly of electric of magnetorheological torsional vibration damper for engine of the invention
State diagram；
When Fig. 4 is that crankshaft high-speed rotates, the adaptive brush assembly of electric of magnetorheological torsional vibration damper for engine of the invention
State diagram.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one: as shown, a kind of magnetorheological torsional vibration damper for engine, including magnetorheological torsional vibration damper main body
Structure, magnetorheological torsional vibration damper for engine further include voltage adaptive controlling module, and voltage adaptive controlling module includes first annular shell
Body 1, control transformer 2, voltage comparator 3, the first collector ring 4, the second collector ring 5, AC-DC converter 6 and adaptive brush
Component, voltage comparator 3 have first input end, the second input terminal, third input terminal, the 4th input terminal and output end, first
Collector ring 4 and the second collector ring 5 are separately positioned on the lateral wall of first annular shell 1, are provided with a left side on first annular shell 1
The first annular cavity 7 of end opening, the opening of first annular cavity 7 are provided with the first cover board 8 for being open and being covered；Control
Transformer 2 is mounted in first annular cavity 7, and control transformer 2 has primary coil 21 and secondary coil 22, primary coil 21
It is ring-type with secondary coil 22, primary coil 21 has first input end and the second input terminal, and secondary coil 22 has first
Output end and second output terminal, the first input end of primary coil 21 and the connection of the first collector ring 4, the second of primary coil 21 are defeated
Enter end and the connection of the second collector ring 5, it is conductive that the right side of secondary coil 22 is disposed with the first conducting ring 9, second from inside to outside
Ring 10, third conducting ring 11 and the 4th conducting ring 12, the first conducting ring 9, the second conducting ring 10, third conducting ring 11 and the 4th are led
Electric ring 12 is not in contact with each other, the right side position of the first conducting ring 9, the second conducting ring 10, third conducting ring 11 and the 4th conducting ring 12
In on same plane, the first conducting ring 9 is connected by the first conductor wire 13 and secondary coil 22, and the second conducting ring 10 passes through second
Conductor wire 14 and secondary coil 22 connect, and third conducting ring 11 is connected by third conductor wire 15 and secondary coil 22, and the 4th leads
Electric ring 12 is connected by the 4th conductor wire 16 with the first output end of secondary coil 22, and secondary coil 22 is located at the first conductor wire 13
Coil turn between the second output terminal of secondary coil 22 is a quarter of its total number of coils, and secondary coil 22 is located at
Coil turn between second conductor wire 14 and the second output terminal of secondary coil 22 is 2/4ths of its total number of coils, secondary
Coil turn of the grade coil 22 between third conductor wire 15 and the second output terminal of secondary coil 22 is its total number of coils
3/4ths.Adaptive brush assembly of electric includes retainer 17 and three adaptive units, and retainer 17 is arranged first annular
In cavity 7, installing port 18 there are three settings on retainer 17, three radially extending along first annular cavity 7 of installing port 18, often
Angle between two neighboring installing port 18 is 120 degree, and three adaptive unit one-to-one correspondence are mounted in three installing ports 18,
Adaptive unit includes spring 19 and brush 20, and one end of spring 19 is fixedly connected with the lateral wall of first annular cavity 7, spring
19 other end is fixedly connected with brush 20,20 stress of brush can in installing port 18 moving radially along first annular cavity 7,
Original state, brush 20 are contacted with the first conducting ring 9, and spring 19 is in nature stretched condition, when 20 stress of brush is mobile, bullet
Spring 19 is compressed, and brush 20 is successively contacted with the second conducting ring 10, third conducting ring 11 and the 4th conducting ring 12；Three adaptive
The spring 19 of unit and the first input end, the second input terminal and third input terminal of voltage comparator 3 connect one to one, voltage
4th input terminal of comparator 3 is connected with the second output terminal of secondary coil 22, and the output end and AC-DC of voltage comparator 3 turn
The input terminal of parallel operation 6 connects, and the output end and magnetorheological torsional vibration damper main structure of AC-DC converter 6 are connected as its offer
Operating voltage.
Embodiment two: as shown, a kind of magnetorheological torsional vibration damper for engine, including magnetorheological torsional vibration damper main body
Structure, magnetorheological torsional vibration damper for engine further include voltage adaptive controlling module, and voltage adaptive controlling module includes first annular shell
Body 1, control transformer 2, voltage comparator 3, the first collector ring 4, the second collector ring 5, AC-DC converter 6 and adaptive brush
Component, voltage comparator 3 have first input end, the second input terminal, third input terminal, the 4th input terminal and output end, first
Collector ring 4 and the second collector ring 5 are separately positioned on the lateral wall of first annular shell 1, are provided with a left side on first annular shell 1
The first annular cavity 7 of end opening, the opening of first annular cavity 7 are provided with the first cover board 8 for being open and being covered；Control
Transformer 2 is mounted in first annular cavity 7, and control transformer 2 has primary coil 21 and secondary coil 22, primary coil 21
It is ring-type with secondary coil 22, primary coil 21 has first input end and the second input terminal, and secondary coil 22 has first
Output end and second output terminal, the first input end of primary coil 21 and the connection of the first collector ring 4, the second of primary coil 21 are defeated
Enter end and the connection of the second collector ring 5, it is conductive that the right side of secondary coil 22 is disposed with the first conducting ring 9, second from inside to outside
Ring 10, third conducting ring 11 and the 4th conducting ring 12, the first conducting ring 9, the second conducting ring 10, third conducting ring 11 and the 4th are led
Electric ring 12 is not in contact with each other, the right side position of the first conducting ring 9, the second conducting ring 10, third conducting ring 11 and the 4th conducting ring 12
In on same plane, the first conducting ring 9 is connected by the first conductor wire 13 and secondary coil 22, and the second conducting ring 10 passes through second
Conductor wire 14 and secondary coil 22 connect, and third conducting ring 11 is connected by third conductor wire 15 and secondary coil 22, and the 4th leads
Electric ring 12 is connected by the 4th conductor wire 16 with the first output end of secondary coil 22, and secondary coil 22 is located at the first conductor wire 13
Coil turn between the second output terminal of secondary coil 22 is a quarter of its total number of coils, and secondary coil 22 is located at
Coil turn between second conductor wire 14 and the second output terminal of secondary coil 22 is 2/4ths of its total number of coils, secondary
Coil turn of the grade coil 22 between third conductor wire 15 and the second output terminal of secondary coil 22 is its total number of coils
3/4ths.Adaptive brush assembly of electric includes retainer 17 and three adaptive units, and retainer 17 is arranged first annular
In cavity 7, installing port 18 there are three settings on retainer 17, three radially extending along first annular cavity 7 of installing port 18, often
Angle between two neighboring installing port 18 is 120 degree, and three adaptive unit one-to-one correspondence are mounted in three installing ports 18,
Adaptive unit includes spring 19 and brush 20, and one end of spring 19 is fixedly connected with the lateral wall of first annular cavity 7, spring
19 other end is fixedly connected with brush 20,20 stress of brush can in installing port 18 moving radially along first annular cavity 7,
Original state, brush 20 are contacted with the first conducting ring 9, and spring 19 is in nature stretched condition, when 20 stress of brush is mobile, bullet
Spring 19 is compressed, and brush 20 is successively contacted with the second conducting ring 10, third conducting ring 11 and the 4th conducting ring 12；Three adaptive
The spring 19 of unit and the first input end, the second input terminal and third input terminal of voltage comparator 3 connect one to one, voltage
4th input terminal of comparator 3 is connected with the second output terminal of secondary coil 22, and the output end and AC-DC of voltage comparator 3 turn
The input terminal of parallel operation 6 connects, and the output end and magnetorheological torsional vibration damper main structure of AC-DC converter 6 are connected as its offer
Operating voltage.
In the present embodiment, magnetorheological torsional vibration damper main structure includes the second toroidal shell 23, inertia annulus 24, first
Magnet exciting coil 25 and the second magnet exciting coil 26, the left end of the second toroidal shell 23 are connected with the right end of first annular shell 1, and second
The second annular cavity of right-end openings is provided on toroidal shell 23, the opening of the second annular cavity is provided with its vent cover
The second cover board 27 firmly is provided with first annular installation cavity, the installation of the first magnet exciting coil 25 on the inner sidewall of the second annular cavity
In first annular installation cavity, the second annular installation cavity, the second magnet exciting coil 26 are provided on the lateral wall of the second annular cavity
It is mounted in the second annular installation cavity, inertia annulus 24 is arranged in the second annular cavity, sets on the left side of inertia annulus 24
It is equipped with first annular groove, the first rubber washer 28, the first rubber washer 28 and the second annular are provided in first annular groove
The bottom of cavity connects, and is provided with second annular groove on the right side of inertia annulus 24, and the is provided in second annular groove
Two rubber washers 29, the second rubber washer 29 and the connection of the second cover board 27, are filled between inertia annulus 24 and the second annular cavity
There is magnetorheological fluid, the output end of AC-DC converter 6 is connect with the first magnet exciting coil 25 and the second magnet exciting coil 26 respectively.
Embodiment three: as shown, a kind of magnetorheological torsional vibration damper for engine, including magnetorheological torsional vibration damper main body
Structure, magnetorheological torsional vibration damper for engine further include voltage adaptive controlling module, and voltage adaptive controlling module includes first annular shell
Body 1, control transformer 2, voltage comparator 3, the first collector ring 4, the second collector ring 5, AC-DC converter 6 and adaptive brush
Component, voltage comparator 3 have first input end, the second input terminal, third input terminal, the 4th input terminal and output end, first
Collector ring 4 and the second collector ring 5 are separately positioned on the lateral wall of first annular shell 1, are provided with a left side on first annular shell 1
The first annular cavity 7 of end opening, the opening of first annular cavity 7 are provided with the first cover board 8 for being open and being covered；Control
Transformer 2 is mounted in first annular cavity 7, and control transformer 2 has primary coil 21 and secondary coil 22, primary coil 21
It is ring-type with secondary coil 22, primary coil 21 has first input end and the second input terminal, and secondary coil 22 has first
Output end and second output terminal, the first input end of primary coil 21 and the connection of the first collector ring 4, the second of primary coil 21 are defeated
Enter end and the connection of the second collector ring 5, it is conductive that the right side of secondary coil 22 is disposed with the first conducting ring 9, second from inside to outside
Ring 10, third conducting ring 11 and the 4th conducting ring 12, the first conducting ring 9, the second conducting ring 10, third conducting ring 11 and the 4th are led
Electric ring 12 is not in contact with each other, the right side position of the first conducting ring 9, the second conducting ring 10, third conducting ring 11 and the 4th conducting ring 12
In on same plane, the first conducting ring 9 is connected by the first conductor wire 13 and secondary coil 22, and the second conducting ring 10 passes through second
Conductor wire 14 and secondary coil 22 connect, and third conducting ring 11 is connected by third conductor wire 15 and secondary coil 22, and the 4th leads
Electric ring 12 is connected by the 4th conductor wire 16 with the first output end of secondary coil 22, and secondary coil 22 is located at the first conductor wire 13
Coil turn between the second output terminal of secondary coil 22 is a quarter of its total number of coils, and secondary coil 22 is located at
Coil turn between second conductor wire 14 and the second output terminal of secondary coil 22 is 2/4ths of its total number of coils, secondary
Coil turn of the grade coil 22 between third conductor wire 15 and the second output terminal of secondary coil 22 is its total number of coils
3/4ths；Adaptive brush assembly of electric includes retainer 17 and three adaptive units, and retainer 17 is arranged first annular
In cavity 7, installing port 18 there are three settings on retainer 17, three radially extending along first annular cavity 7 of installing port 18, often
Angle between two neighboring installing port 18 is 120 degree, and three adaptive unit one-to-one correspondence are mounted in three installing ports 18,
Adaptive unit includes spring 19 and brush 20, and one end of spring 19 is fixedly connected with the lateral wall of first annular cavity 7, spring
19 other end is fixedly connected with brush 20,20 stress of brush can in installing port 18 moving radially along first annular cavity 7,
Original state, brush 20 are contacted with the first conducting ring 9, and spring 19 is in nature stretched condition, when 20 stress of brush is mobile, bullet
Spring 19 is compressed, and brush 20 is successively contacted with the second conducting ring 10, third conducting ring 11 and the 4th conducting ring 12；Three adaptive
The spring 19 of unit and the first input end, the second input terminal and third input terminal of voltage comparator 3 connect one to one, voltage
4th input terminal of comparator 3 is connected with the second output terminal of secondary coil 22, and the output end and AC-DC of voltage comparator 3 turn
The input terminal of parallel operation 6 connects, and the output end and magnetorheological torsional vibration damper main structure of AC-DC converter 6 are connected as its offer
Operating voltage.
In the present embodiment, magnetorheological torsional vibration damper main structure includes the second toroidal shell 23, inertia annulus 24, first
Magnet exciting coil 25 and the second magnet exciting coil 26, the left end of the second toroidal shell 23 are connected with the right end of first annular shell 1, and second
The second annular cavity of right-end openings is provided on toroidal shell 23, the opening of the second annular cavity is provided with its vent cover
The second cover board 27 firmly is provided with first annular installation cavity, the installation of the first magnet exciting coil 25 on the inner sidewall of the second annular cavity
In first annular installation cavity, the second annular installation cavity, the second magnet exciting coil 26 are provided on the lateral wall of the second annular cavity
It is mounted in the second annular installation cavity, inertia annulus 24 is arranged in the second annular cavity, sets on the left side of inertia annulus 24
It is equipped with first annular groove, the first rubber washer 28, the first rubber washer 28 and the second annular are provided in first annular groove
The bottom of cavity contacts, and is provided with second annular groove on the right side of inertia annulus 24, and the is provided in second annular groove
Two rubber washers 29, the second rubber washer 29 and the contact of the second cover board 27, are filled between inertia annulus 24 and the second annular cavity
There is magnetorheological fluid, the output end of AC-DC converter 6 is connect with the first magnet exciting coil 25 and the second magnet exciting coil 26 respectively.
In the present embodiment, be attached with the first wear ring 30 on the lateral wall of the second annular cavity, the second annular cavity it is interior
The second wear ring 31, the inner wall of inertia annulus 24 and the contact of the second wear ring 31, the outer wall of inertia annulus 24 are attached on side wall
It is contacted with the first wear ring 30.
Claims (3)
1. a kind of magnetorheological torsional vibration damper for engine, including magnetorheological torsional vibration damper main structure, it is characterised in that described
Magnetorheological torsional vibration damper for engine further include voltage adaptive controlling module, the voltage adaptive controlling module includes first annular
Shell, control transformer, voltage comparator, the first collector ring, the second collector ring, AC-DC converter and adaptive brush assembly of electric,
The voltage comparator has first input end, the second input terminal, third input terminal, the 4th input terminal and output end, described
The first collector ring and second collector ring be separately positioned on the lateral wall of the first annular shell, described the
The first annular cavity of left end opening is provided on one toroidal shell, the opening of the first annular cavity is provided with it
Be open the first cover board covered；
The control transformer is mounted in the first annular cavity, the control transformer have primary coil and
Secondary coil, the primary coil and the secondary coil are ring-type, and the primary coil has first input end
With the second input terminal, the secondary coil has the first output end and second output terminal, and the first of the primary coil is defeated
Entering end to connect with first collector ring, the second input terminal of the primary coil is connected with second collector ring,
The right side of the secondary coil is disposed with the first conducting ring, the second conducting ring, third conducting ring and the 4th from inside to outside
Conducting ring, first conducting ring, second conducting ring, the third conducting ring and the 4th conducting ring are mutual
It does not contact, first conducting ring, second conducting ring, the third conducting ring and the 4th conducting ring
Right side is in the same plane, and first conducting ring is connected by the first conductor wire with the secondary coil, described
The second conducting ring connect with the secondary coil by the second conductor wire, the third conducting ring passes through third conductor wire
It is connected with the secondary coil, the first output that the 4th conducting ring passes through the 4th conductor wire and the secondary coil
End connection, the secondary coil are located at the line between the second output terminal of first conductor wire and the secondary coil
The a quarter that the number of turns is its total number of coils is enclosed, the secondary coil is located at second conductor wire and the secondary
Coil turn between the second output terminal of coil is 2/4ths of its total number of coils, and the secondary coil is located at described
Third conductor wire and the secondary coil second output terminal between coil turn be its total number of coils four/
Three；
The adaptive brush assembly of electric includes retainer and three adaptive units, and the retainer is arranged in described the
In one annular cavity, setting is there are three installing port on the retainer, and installing port described in three is along described first annular
Cavity radially extends, and the angle between each adjacent two installing port is that adaptive unit described in 120 degree, three corresponds
It is mounted in three installing ports, the adaptive unit includes spring and brush, one end of the spring and institute
The lateral wall for the first annular cavity stated is fixedly connected, and the other end of the spring is fixedly connected with the brush, described
Brush stress can in the installing port moving radially along the first annular cavity, original state, the electricity
Brush is contacted with first conducting ring, and the spring is in nature stretched condition, when the brush stress is mobile, institute
The spring stated is compressed, the brush successively with second conducting ring, the third conducting ring and the described the 4th
Conducting ring contact；The first input end of the spring of adaptive unit described in three and the voltage comparator, the second input
End and third input terminal connect one to one, and the second of the 4th input terminal of the voltage comparator and the secondary coil
Output end connection, the output end of the voltage comparator are connected with the input terminal of the AC-DC converter, the AC-
The output end of DC converter and the magnetorheological torsional vibration damper main structure are connected as it and provide operating voltage.
2. a kind of magnetorheological torsional vibration damper for engine according to claim 1, it is characterised in that the magnetorheological torsion
Damper main body structure of shaking includes the second toroidal shell, inertia annulus, the first magnet exciting coil and the second magnet exciting coil, and described the
The left end of second ring shell is connected with the right end of the first annular shell, is provided with right end on second toroidal shell
Second annular cavity of opening, the opening of second annular cavity are provided with the second cover board for being open and being covered, institute
First annular installation cavity is provided on the inner sidewall for the second annular cavity stated, first magnet exciting coil is mounted on described
In first annular installation cavity, it is provided with the second annular installation cavity on the lateral wall of second annular cavity, described second
Magnet exciting coil is mounted in the annular installation cavity of described second, and second annular cavity is arranged in the inertia annulus
It is interior, it is provided with first annular groove on the left side of the inertia annulus, is provided with first in the first annular groove
The bottom of rubber washer, first rubber washer and second annular cavity contacts, the right side of the inertia annulus
It is provided with second annular groove on end face, the second rubber washer, second rubber are provided in the second annular groove
Rubber gasket and second cover board contact, filled with magnetorheological between the inertia annulus and second annular cavity
Liquid, the output end of the AC-DC converter are connect with first magnet exciting coil and second magnet exciting coil respectively.
3. a kind of magnetorheological torsional vibration damper for engine according to claim 2, it is characterised in that second annular
It is attached with the first wear ring on the lateral wall of cavity, is attached with the second wear ring on the inner sidewall of second annular cavity,
The inner wall of the inertia annulus and second wear ring contact, the outer wall of the inertia annulus and described first resistance to
Bull ring contact.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710186570.8A CN106969086B (en) | 2017-03-27 | 2017-03-27 | A kind of magnetorheological torsional vibration damper for engine |
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| CN201710186570.8A CN106969086B (en) | 2017-03-27 | 2017-03-27 | A kind of magnetorheological torsional vibration damper for engine |
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| CN106969086A CN106969086A (en) | 2017-07-21 |
| CN106969086B true CN106969086B (en) | 2018-12-04 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623080B (en) * | 2020-05-13 | 2021-07-23 | 嘉兴学院 | Engine torsional vibration damper based on magnetorheological grease |
| CN114658800A (en) * | 2020-12-23 | 2022-06-24 | 长城汽车股份有限公司 | Vibration absorbing device, transmission system and vehicle |
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| CN106969086A (en) | 2017-07-21 |
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