CN106090156B - A kind of two-way tensioning apparatus of bi-directional association and belt variable damping unit - Google Patents
A kind of two-way tensioning apparatus of bi-directional association and belt variable damping unit Download PDFInfo
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- CN106090156B CN106090156B CN201610452916.XA CN201610452916A CN106090156B CN 106090156 B CN106090156 B CN 106090156B CN 201610452916 A CN201610452916 A CN 201610452916A CN 106090156 B CN106090156 B CN 106090156B
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- belt
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/0829—Means for varying tension of belts, ropes, or chains with vibration damping means
- F16H7/0838—Means for varying tension of belts, ropes, or chains with vibration damping means of the dissipating material type, e.g. elastomeric spring
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The present invention relates to a kind of tensioning apparatus, in particular to the two-way tensioning apparatus of a kind of bi-directional association and belt variable damping unit.The two-way tensioning apparatus of a kind of bi-directional association and belt variable damping unit, which includes: a pedestal；One first stretcher, first stretcher are rotatablely arranged at the pedestal；One second stretcher, second stretcher are rotatablely arranged at the pedestal；And one association belt variable damping unit, one end of the association belt variable damping unit is rotatably connected at first stretcher, another of the association belt variable damping unit is rotatably connected at second stretcher, and first stretcher and second stretcher are located at the two sides of the pedestal.Association belt variable damping unit can be compressed and be capable of providing variable damping.
Description
Technical field
The present invention relates to a kind of tensioning apparatus, in particular to the two-way tensioning of a kind of bi-directional association and belt variable damping unit
Device.
Background technique
Under energy source of car utilization efficiency increasingly higher demands, the weak mixed engine with start and stop technology has become master
Stream, is realized that the automobile of start and stop technology is typically necessary by belt driving and uses MGU motor.Function sheet possessed by MGU motor
Body, which determines it both, to be engine output, such as starting motor and assist motor work, and can be engine
Kinetic energy be converted to electric energy, such as consumption of engine power as energy regenerating electricity as electrical power generators and in engine retard
When machine works.In this way, just there are two driving sources: crankshaft pulley and MGU electrical machine belt pulley in belt transmission drive system.When this
When two driving sources alternately switch or work together (such as assist motor mode), will lead to the receding side of belt on MGU motor both sides with
Pilled-in selvedge is switched fast, and the variable quantity of Belt Length is very big.In order to guarantee the stable and effective fortune of entire belt driving transmission system
Row, is realized that the weak mixed engine of start and stop technology needs a kind of tensioning apparatus to ensure MGU motor in various modes by belt driving
The pilled-in selvedge of both sides belts and slack list can switch in time and keep appropriate tension when work or switching, prevent from skidding, avoid noise and
Drive transmission failure.
There are mainly four types of operating modes for automobile with MGU motor, are respectively: operating condition of the MGU motor as starting motor,
Start motor mode；Operating condition of the MGU motor as generator, i.e. generator mode；Work of the MGU motor as assist motor
Condition, i.e. assist motor mode；And operating condition of the MGU motor as energy regenerating motor, i.e. energy regenerating motor mode.These four
Operating condition has the characteristics that following:
The first, when being transformed into starting motor mode from idle stop, very big starting torque can be generated, belt will push
The stretcher of slack list is quickly moved toward stretcher loading direction when as generator mode, and this motor pattern will increase original hair
Pilled-in selvedge belt elongation under motor mode makes pilled-in selvedge of the MGU motor as generator when become slack list band in a very short period of time
Section has skidding if not installing automatic tensioner in the side, and noise even drives the risk of failure.
The second, when being transformed into starting motor mode from idle stop, the belt of slack list can be pushed quickly under generator mode
This side stretcher is moved toward stretcher loading direction, which quickly swings to its extreme position.The side stretcher at this time
Need the sluggish movement of biggish damping；And the pilled-in selvedge under generator mode will become slack list, this sideband section can be elongated, needs this
The elongation that side stretcher can quickly compensate belt just can guarantee that belt has enough tension, this side stretcher is needed to hinder at this time
Buddhist nun is relatively a little bit smaller, just can guarantee stretcher compensation speed.
Third, from starting motor mode or assist motor mode be transformed into energy regenerating motor mode when, belt can also push away
The stretcher of slack list quickly moves to it toward stretcher loading direction when movement is starts electric motor mode or assist motor mode
Extreme position, this motor pattern also will increase pilled-in selvedge belt variable quantity under this mode, make MGU as starting motor or power-assisted electricity
Pilled-in selvedge band section when machine fluffs, if not installing another automatic tensioner in the side, also has even driving failure of skidding
Risk.
So needing to be respectively mounted automatic tensioner in MGU motor two sides can solve according to above-mentioned three kinds of work characteristics
Problem, but there are following technical problems:
1, two stretcher costs will certainly be very high, and the belt tension of accessory system is high, and the amplitude of oscillation of stretcher is big, output
Torque decaying is fast, and the service life is short, is unable to satisfy projected life.
2, pilled-in selvedge tension is extremely big when MGU is as starting motor, will if do not limited pilled-in selvedge stretcher cornerite
Influence the Bearing with wheel service life.
3, when MGU is transformed into starter motor mode from idle stop, the variation of pilled-in selvedge and slack list with segment length is very fast, such as
Korean pine side stretcher compensation speed is insufficient, and system will have slip risk；If pilled-in selvedge stretcher belt wheel swing angle is excessive, it is
System also has slip risk.
4, when MGU is transformed into start-up mode from idle stop or energy regenerating motor mode is transformed into assistant mode, pine
While becoming pilled-in selvedge position, tensioner arm needs the next sluggish belt of enough dampings to shorten to quickly increase the tension of pilled-in selvedge and slow down and open
Tight impact of the arm to limiting device, and the tensioner arm that pilled-in selvedge becomes slack list position needs quickly to swing to compensate the elongation of belt.
5, when MGU is as starting electric motor mode, advancing side of belt tension is extremely big, and belt will push pilled-in selvedge stretcher past
Loading direction quickly moves, the belt so that v-belt contact angle on pilled-in selvedge stretcher becomes smaller or is detached from, if not to stretcher load side
Slip risk will be had by carrying out limitation system to movement position.
6, when MGU is as generator or energy regenerating motor mode, advancing side of belt tension is also very big, and belt will push tight
Side stretcher is quickly moved toward loading direction, the belt so that pilled-in selvedge cornerite becomes smaller or is detached from, if not to pilled-in selvedge stretcher load side
Slip risk will be had by carrying out limitation system to movement position.
7, when MGU is transformed into electric generator mode by starting motor mode, slack list becomes pilled-in selvedge position tensioner arm needs
Enough impacts for damping to prevent belt from shortening to quickly increase the tension of pilled-in selvedge He slow down tensioner arm to limiting device, and it is tight
While the tensioner arm for becoming slack list position needs quickly to swing to compensate the elongation of belt.
8, to reach stretcher slack list in each pattern switching of MGU, to become pilled-in selvedge stretcher swing speed slow, and pilled-in selvedge
Become slack list stretcher swing speed and want fast job requirement, needs two stretchers of the two sides MGU being associated together movement,
When can will become pilled-in selvedge by slack list in this way, the power of the tensioner travel of the side passes to the stretcher for becoming slack list side by pilled-in selvedge,
Accelerate the compensation ability that pilled-in selvedge becomes speed and Belt Length that stretcher when slack list is swung, and when slack list becomes pilled-in selvedge, two
Damping unit between stretcher generates larger damping, slows down the speed that slack list becomes the swing of pilled-in selvedge stretcher.
Summary of the invention
The present invention provides the two-way tensioning apparatus of a kind of bi-directional association and belt variable damping unit, can guarantee to have
The belt transmission drive system of MGU motor can be stablized under each operating condition and effectively run.
The technical solution adopted by the present invention to solve the technical problems is:
The two-way tensioning apparatus of a kind of bi-directional association and belt variable damping unit, the device include:
One pedestal；
One first stretcher, first stretcher are rotatablely arranged at the pedestal；
One second stretcher, second stretcher are rotatablely arranged at the pedestal；And
One end of one association belt variable damping unit, the association belt variable damping unit is rotatably connected at described the
One stretcher, another of the association belt variable damping unit are rotatably connected at second stretcher, and described first
Stretcher and second stretcher are located at the two sides of the pedestal.Association belt variable damping unit can be compressed and energy
It is enough that variable damping is provided.
The present invention relates to a kind of skins that electronic and power generation integrated motor (abbreviation MGU in the present invention) is mounted on internal combustion engine
Stretcher with driving transmission system, the motor have as starting motor, current generator, assist motor and energy regenerating electricity
Two or more function in four kinds of functions of machine.
The method is characterized in that two stretchers of the association two sides MGU, are two stretcher setting limit swing positions,
Variable damping device is integrated with stretcher elasticity, and two stretchers can generate damping alone and together.
Preferably, first stretcher include one first tensioner arm, one first tensioning wheel, one first damping unit and
One first position limiting structure, first tensioning wheel are rotatablely arranged at one end of first tensioner arm, first damping
Device is set on first tensioner arm, is rotatablely arranged at first tensioner arm by first damping unit
The pedestal, first position limiting structure are set on pedestal, the first position limiting structure for preventing first tensioner arm around
First damping unit rotation.
Preferably, second stretcher include one second tensioner arm, one second tensioning wheel, one second damping unit and
One second position limiting structure, second tensioning wheel are rotatablely arranged at one end of second tensioner arm, second damping
Device is set on second tensioner arm, is rotatablely arranged at second tensioner arm by second damping unit
The pedestal, second position limiting structure are set on pedestal, the second position limiting structure for preventing second tensioner arm around
Second damping unit rotation.
Preferably, first position limiting structure be block by being set on the outside of base end upper surface and with the block
First buffer unit of cooperation is formed, and the outer end face of the first buffer unit is adjacent with the first tensioner arm.First position limiting structure and institute
Base engagement is stated, limits first tensioner arm around the slewing area of the first rotating shaft.
Preferably, second position limiting structure be block by being set on the outside of base end upper surface and with the block
Second buffer unit of cooperation is formed, and the outer end face of the second buffer unit is adjacent with the second tensioner arm.Second position limiting structure and institute
Base engagement is stated, limits second tensioner arm around the slewing area of second shaft.
Preferably, including a Hookean spring and damping unit in the association belt variable damping unit.The association band can
When variable damping device is pressurized, which shortens, and increases belt tension.The damping unit can produce larger resistance when being pressurized
Buddhist nun's power, and smaller damping force is generated when restoring elongation.The damping force of the variable damping device can become with the variation of speed
Change, speed is faster, and damping force is bigger, and speed is slower, damps smaller.
Preferably, the association belt variable damping unit includes a spring damping structure, the both ends of spring damping structure
With one first mounting hole and one second mounting hole, first stretcher is rotatably connected at by first mounting hole
Spring damping structure, second stretcher are rotationally connect with spring damping structure by second mounting hole.It is described
First mounting hole and second mounting hole are located at the both ends of the spring damping structure.Have respectively in the two mounting holes
Metallic sheath and anti-friction bush.First stretcher connects the association belt variable damping unit by first mounting hole,
And it can freely be swung around its secure component and generate damping；Second stretcher connects the pass by second mounting hole
Associated variable damping device, and can freely be swung around its secure component and generate damping.
Preferably, the association belt variable damping unit includes one for fixing the first stretcher on the pedestal
First locked pin and one is for fixing the second stretcher in the second locked pin on the pedestal.
Preferably, the first buffer unit and the second buffer unit are elastomer, the block direction of the first position limiting structure
The side of tensioner arm is equipped with the slot matched with the first buffer unit outer profile, so that the first buffer unit be made to be fixed on block
On.
The invention has the advantages that:
1, it is stable and effective in each mode not only to meet the belt transmission drive system with MGU motor by the present invention
Work, and the axle load of two belt wheels of the tensioning apparatus is reduced, reduce the pivot angle of stretcher, extend whole system uses the longevity
Life；Its cornerite size that can limit MGU motor pilled-in selvedge tensioning wheel is minimized because of hubload mistake caused by high-tension
Height improves the service life of tension wheel shaft bearing；It can limit two respective extreme positions of stretcher, to prevent pilled-in selvedge
The phenomenon that tight device v-belt contact angle is too small or is detached from belt, is able to guarantee that entire belt drive system is non-slip；It is in MGU electricity
During machine two sides slack list and pilled-in selvedge are quickly converted, the tension and compensation pilled-in selvedge that can quickly improve slack list become skin behind slack list
The variation of strip length is able to guarantee that entire belt transmission drive system is non-slip；It can the belt on MGU motor both sides its
During middle one side becomes pilled-in selvedge by slack list, enough damping forces are provided to quickly increase the tension on the side, are absorbed and sluggish
The impact that stretcher is swung, reduces the vibration of system, noise and skidding；It can be wherein the one of the belt on MGU motor both sides
While quickly compensating the elongation of belt during becoming slack list by pilled-in selvedge；Two stretchers can generate damping alone and together,
The dynamic load of tensioner arm swing speed and system can be reduced, the stationarity of system work is improved.
2, the present invention associates two automatic tensioners, so that the power that slack list becomes pilled-in selvedge tensioner travel passes to
Pilled-in selvedge becomes the stretcher of slack list, accelerates the speed that pilled-in selvedge becomes the swing of slack list stretcher, considerably increases and become to Belt Length
The compensation ability of change, meanwhile, when pilled-in selvedge becomes slack list, the spring damping device for being associated with two stretchers generates larger damping, can
To quickly increase pilled-in selvedge tension.
3, the present invention can reduce original belt tension, guarantee system reliability, validity and comfort and improve system
Service life.
Detailed description of the invention
Shown in FIG. 1 is structural schematic diagram of the invention；
Shown in Fig. 2 is typical BSG train schematic diagram；
Shown in Fig. 3 is system shown in Figure 2 each component work and function under generator mode or energy regenerating motor mode
It can schematic diagram；
Shown in Fig. 4 is system shown in Figure 2 each component work and function signal under starting motor mode or assistant mode
Figure；
Shown in fig. 5 is concrete structure schematic diagram of the invention；
It is the specific schematic diagram of position limiting structure of the present invention shown in Fig. 6-a, 6-b and 6-c；
It is the structural schematic diagram that belt variable damping unit is associated in stretcher of the present invention shown in Fig. 7-a, 7-b；
Shown in Fig. 8 is the structural schematic diagram of two stretchers association belt variable damping unit of the invention.
In figure: two-way tensioning apparatus 1, the first stretcher 10, the first tensioner arm 11, the first tensioning wheel 12, the first damping dress
Set 13, the first position limiting structure 14, the first buffer unit 141, the first locked pin 142, first rotating shaft 15 and the second shaft 16, fastening
Component 19 and 29, the second stretcher 20, the second tensioner arm 21, the second tensioning wheel 22, the second damping unit 23, the second position limiting structure
24, the second buffer unit 241, the second locked pin 242 is associated with belt variable damping unit 30, the first mounting hole 31, second peace
Fill hole 32, spring damping structure 33, pedestal 40, hydraulic mechanism 81, spring 82；
Belt 2, crankshaft pulley 3, by driving attachment wheel 4, MGU motor 5, extreme position 8 and 9.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention will be further explained in detail.It answers
Work as understanding, implementation of the invention is not limited by the following examples, the accommodation in any form done to the present invention and/or
Change falls within the scope of the present invention.
Embodiment:
Fig. 1, a kind of two-way tensioning apparatus 1 shown in fig. 5, the two-way tensioning apparatus 1 include one first stretcher 10, one
Second stretcher 20, an an association belt variable damping unit 30 and pedestal 40, first stretcher 10 and second described
Tight device 20 is individually fixed in the pedestal 40, and can swing around respective first rotating shaft 15 and the second shaft 16.Described first
One end of stretcher 10 and one end of second stretcher 20 use secure component 19 and 29 and the association belt variable to hinder respectively
Buddhist nun's device 30 connects, and each hinged place can freely swing (see figure 8) around respective rotation center 27 and 28, in this way, described the
One stretcher 10 and second stretcher 20 associate.
First stretcher 10 includes one first tensioner arm 11, one first tensioning wheel 12 and one first damping unit 13,
First tensioning wheel 12 is rotatably fixed to one end of first tensioner arm 11, and first damping unit 13 is set to
On first tensioner arm 11, it is able to for first tensioner arm 11 being rotatably fixed to by first damping unit 13
The pedestal 40.First stretcher 10 further includes one first position limiting structure 14, and first position limiting structure 14 is by being arranged
Block on the outside of 40 end upper surface of pedestal and the first buffer unit 141 formation with block cooperation, the first buffer unit
141 outer end face is adjacent with the first tensioner arm 11 (as shown in Fig. 6-C), and first position limiting structure 14 is matched with the pedestal 40
It closes, limits first tensioner arm 11 around the slewing area of the first rotating shaft 15.
Specifically, second stretcher 20 includes one second tensioner arm 21, one second tensioning wheel 22 and one second damping
Device 23, second tensioning wheel 22 are rotatably fixed to one end of second tensioner arm 21, second damping unit
23 are set on second tensioner arm 21, are able to can be rotated second tensioner arm 21 by second damping unit 23
Ground is fixed on the pedestal 40.Second stretcher 20 further includes one second position limiting structure 24, and structure is tied with the first limit
Structure 14 is identical, second position limiting structure 24 be block from being set on the outside of 40 end upper surface of pedestal and with the block
The formation of the second buffer unit 241, the outer end face of the second buffer unit 241 is adjacent with the second tensioner arm 21 (such as Fig. 6-C institute
Show), and second position limiting structure 24 and the pedestal 40 cooperate, and are able to limit 21 ground of the second tensioner arm around described the
Two shafts, 16 slewing area.
According to shown in Fig. 6-a, 6-b and 6-c, the first buffer unit 141 and the second buffer unit 241 are elastomer,
The block of first position limiting structure 14 is equipped with the slot matched with 141 outer profile of the first buffer unit towards the side of tensioner arm, from
And be individually fixed in the first buffer unit 141 and the second buffer unit 241 on two blocks, two position limiting structures and pedestal into
When row cooperates, position limiting structure effect is abnormal sound caused by preventing from directly contacting as pedestal with the metalwork of tensioner arm,
It prevents from causing the destruction to two-way tensioning apparatus 1 due to the impact for directly contacting generation.Hole, the first tensioner arm are additionally provided on block
11 outside is equipped with porose convex block, and L-shaped first locked pin 142 is each passed through on the hole on convex block and the first buffer unit
Hole, be fixed on the second stretcher on the pedestal.The effect of locked pin 142 is to facilitate the installation and removal of belt.Equally
Ground also is provided with hole and the second locked pin 242 engaged therewith on the block of second position limiting structure 24.
According to Fig. 1 and Fig. 5, association belt variable damping unit 30 can be compressed and be capable of providing certain damping.
The association belt variable damping unit 30 includes a spring damping structure 33, secure component 19 and 29, spring damping structure 33
Both ends have one first mounting hole 31 and one second mounting hole 32.First stretcher 10 can by first mounting hole 31
It is rotationally connect with spring damping structure 33 around secure component 19, second stretcher 20 can by second mounting hole 32
Rotationally connect with spring damping structure 33 around secure component 29, be able in this way by first stretcher 10 flexibly, have resistance
Buddhist nun and be rotatably connected at second stretcher 20, realize first stretcher 10 and second stretcher 20
Association.
Shown in Fig. 2 is a typical FEAD system (front end accessory drive system), which has crankshaft pulley 3, skin
Band 2, by driving attachment wheel 4(such as air-conditioning belt wheel), MGU motor 5 and the two-way tensioning apparatus 1 composition, when work, pass through institute
It states two-way tensioning apparatus 1 and guarantees the tensioning and belt compensation requirement of whole system in different modes, enable the system to stablize
Ground operation.In each mode, to meet system requirements, mentality of designing of the invention is as described below:
Shown in Fig. 3 is generator mode or energy regenerating motor mode, positioned at 20 quilt of the second stretcher of pilled-in selvedge
Belt is pushed to extreme position 9 and no longer swings.At this moment, the second tensioning wheel 22 of second stretcher 20 is practical solid as one
Fixed idle pulley works in FEAD system, can pass through the maximum carrying specification of the second tensioning wheel 22 of second stretcher 20
Come determine second stretcher 20 the second tensioning wheel 22 cornerite, then calculate 9 accurate location of extreme position.
When starting motor mode or assist motor mode according to Fig.4, positioned at first stretcher 10 of pilled-in selvedge
Extreme position 8 is pushed to by belt no longer to swing.At this moment, the first tensioning wheel 12 of first stretcher 10 is practical as one
Fixed idle pulley works in FEAD system, can pass through the maximum carrying rule of the first tensioning wheel 12 of first stretcher 10
Model determines the cornerite of the first tensioning wheel 12 of first stretcher 10, then calculates 8 accurate location of extreme position.
Specifically, when slack list and pilled-in selvedge convert, when in order to guarantee that slack list becomes pilled-in selvedge described in described in the first stretcher 10
First tensioner arm, 11 swing speed is slow enough；When pilled-in selvedge becomes slack list, when in order to guarantee that pilled-in selvedge becomes slack list described in second tensioning
The swing speed of second tensioner arm 21 of device 20 is sufficiently fast, and best mode is exactly by first stretcher 10 and described
Second stretcher 20 associates, and the present invention is exactly based on the association belt variable damping unit 30 for first stretcher 10
It is associated with second stretcher 20.
Design principle of the invention is as described below:
1, two stretchers of the present invention, i.e., described first stretcher 10 and second stretcher 20 are in MGU electricity
It can individually or simultaneously be used as stretcher under 5 different mode of machine.Under any mode, if the stretcher of pilled-in selvedge is pulled to it
After extreme position, which is no longer swung, and is actually become an idle pulley and is worked in systems use.
2, two stretchers of the present invention, i.e., in the rotation of described first stretcher 10 and second stretcher 20
The heart is not overlapped, and specifically, first stretcher 10 is center of rotation rotation, second stretcher with the first rotating shaft 15
20 with second shaft 16 be center of rotation rotation.
3, the extreme position of the first tensioning wheel 12 of first stretcher 10, the full swing of first stretcher 10
Range (start-up mode input data).
4, the output of second stretcher 20: the minimum and maximum position of second tensioning wheel 22, from engine mould
The output of formula design obtains the stop position of first tensioning wheel 12.
5, the present invention using the association belt variable damping unit 30 by the stretcher on MGU motor both sides, i.e., described first
Stretcher 10 and second stretcher 20 associate and move together.
6, the association belt variable damping unit 30 includes the spring damping structure 33, and the spring damping structure 33 exists
What is generated when compression damps the damping for being greater than and generating when elongation, and compression is bigger, and damping is bigger, and compression is smaller, damps smaller.
7, in order to guarantee that the association belt variable damping unit 30 can be well adapted for first stretcher 10 and institute
The swing of the second stretcher 20 is stated, the association belt variable damping unit 30 has first mounting hole 31 and second peace
Fill hole 32, by first mounting hole 31 and second mounting hole 32 be able to by it is described be associated with belt variable damping unit 30 around
The oscillation center 28 of the oscillation center 27 of first mounting hole 31 and second mounting hole 32 rotate.
8, first stretcher 10 and second stretcher 20 are respectively by first damping unit 13 and described
Second damping unit 23 is independent to be generated damping or generates damping together, when which can reduce slack list and becomes pilled-in selvedge, described the
The swing angle and swing speed that one tensioner arm 11 and second tensioner arm 21 are generated because compensating belt, but also can drop
Impact force and stroke speed between low first position limiting structure 14 and second position limiting structure 24 and the pedestal 40.
9, the torque that MGU is exported when due to start-up mode is very big, and the belt tension in start-up mode pilled-in selvedge is also very big,
Therefore, the damping of first stretcher 10 should be greater than the damping of second stretcher 20 in slack list in this state.
10, it will lead to first position limiting structure on first stretcher 10 because of the switching of MGU motor different mode
Impact is had between 14 and second position limiting structure 24 and the pedestal 40 on second stretcher 20, so of the invention
First buffer unit 141 and second buffer unit 241 has also been devised, is able to the mill for preventing metal from directly contacting generation
Damage, abnormal sound and impact.
Working condition of the present invention under four kinds of different modes of MGU motor is as described below:
One, electric generator mode
When system is in generator mode, second stretcher 20 is pushed by 2 pilled-in selvedge tension of belt and reaches its limit
Position, so that second stretcher 20 is no longer swung, at this moment the second tensioning wheel 22 is described really as a fixed idle pulley
First stretcher 10 will carry out tension adjustment and Belt Length compensation as an automatic tensioner.
Two, start motor mode
When system is in starting motor mode, first tensioning 10 is pushed by 2 pilled-in selvedge tension of belt reaches its limit
Position, so that first stretcher 10 is no longer swung, at this moment the first tensioning wheel 12 is described really as a fixed idle pulley
Second stretcher 20 will carry out tension adjustment and Belt Length compensation as an automatic tensioner.
Three, start motor mould or assist motor Mode change is generator mode
First stretcher 10 is associated with the association of belt variable damping unit 30 simultaneously by described with second stretcher 20
And move together, the belt thrust during belt 2 capable of being become pilled-in selvedge from slack list causes second stretcher 20 to generate
Swing passes to first stretcher 10 for becoming slack list from pilled-in selvedge, guarantees described first that becomes slack list band section from pilled-in selvedge
Tight device 20 prevents from generating skidding and noise because slack list compensation speed is inadequate to the compensation speed with the elongation of section belt.It is described
The moment that the damping of the spring damping structure 33 can prevent power from transmitting on association belt variable damping unit 30, the spring resistance
Buddhist nun's structure 33 is compressed and is reduced the transmitting of swing by transition, and first stretcher 10 for causing pilled-in selvedge to become slack list compensates speed
Degree is insufficient and generates skidding and noise.
Four, electric generator mode or energy regenerating motor mode and assistant mode handoff procedure
First stretcher 10 is associated with the association of belt variable damping unit 30 simultaneously by described with second stretcher 20
And move together, the belt thrust during belt 2 capable of being become pilled-in selvedge from slack list causes first stretcher 10 to generate
Swing passes to second stretcher 20 for becoming slack list from pilled-in selvedge, guarantees described second that becomes slack list band section from pilled-in selvedge
Tight device 10 prevents from generating skidding and noise because slack list compensation speed is inadequate to the compensation speed with the elongation of section belt.It is described
The moment that the damping of the spring damping structure 33 can prevent power from transmitting on association belt variable damping unit 30, the spring resistance
Buddhist nun's structure 33 is compressed and is reduced the transmitting of swing by transition, and second stretcher 20 for causing pilled-in selvedge to become slack list compensates speed
Degree is insufficient and generates skidding and noise.
First stretcher 10 is all used as one automatic in a big chunk of the entire working life of transmission device
Tight device work, because the association belt variable damping unit 30 has the function of adaptive damping, therefore can hinder the association belt variable
The damping of Buddhist nun's device 30 is designed, and can be better ensured that between first stretcher 10 and second stretcher 20 in this way
Swing displacement and swing speed transmitting, be displaced first stretcher 10 and second stretcher 20 and absorb more
More vibrations improves the stationarity of system and avoids resonating.Second stretcher 20 is only in idle stop starting and power-assisted mould
Just automatic tensioner is used as to work when formula.From the foregoing, it the motion range of two stretchers and works as automatic tensioner
Time have very big difference.
Example can be understood from details described above, and design of the invention makes first stretcher 10 and second described
The tension that tight device 20 provides minimizes, and actually described first stretcher 10 and second stretcher 20 are used as needed
Automatic tensioner, or be pulled to limiting device and no longer swing, it works in systems really as a fixed idler.Specifically
Ground, the pedestal 40 are installed in the front end of MGU shell, and the inner ring circumference of the pedestal 40 is greater than the straight of 5 belt wheel of MGU motor
Diameter, outer ring circumference adapt to the size of starting motor/generator front end main body.In order to save cost, the pedestal 40 can directly collect
At on MGU motor, stretcher and integral vehicle cost can be reduced in this way, can also mitigate complete vehicle quality.
First stretcher 10 and second stretcher 20, first stretcher are mounted on the pedestal 40
10 work around the rotation center 27, and second stretcher 20 works around the rotation center 28.In addition, two in Fig. 3
A limiting device 8 and 9 limits the extreme displacement of first tensioning wheel 12 and second tensioning wheel 22.
The present invention is compared with other technologies, and main difference is as follows:
1, position limiting structure: the presence of first position limiting structure 14 and second position limiting structure 24 can make described first
The load that first tensioning wheel 12 of stretcher 10 and the second tensioning wheel 22 of second stretcher 20 are born is in model appropriate
In enclosing.Fig. 6 shows the working principle of the position limiting structure 14 or the position limiting structure 24, and the position limiting structure of Fig. 6-a bears tight
The resultant force F1 (tensioning device wheel on hubload) of flaw-piece band, which is greater than, to be acted on first stretcher 10 and hinders with belt variable is associated with
The power F2 of 30 junction of Buddhist nun's device.First stretcher 10 is limited in extreme position at this time, and the first tensioning wheel 12 is practical
It works in systems as a belt wheel.And at this moment second stretcher 20 can freely swing to adjust tension and compensation skin
The variable quantity of band.The resultant force F1 (hubload in tensioning device wheel) that the position limiting structure of Fig. 6-b bears pilled-in selvedge belt is less than effect
In first stretcher 10 and the power F2 for being associated with 30 junction of belt variable damping unit.Second stretcher 20 is limited at this time
In extreme position, the second tensioning wheel 22 works system in systems really as a belt wheel.And first stretcher 10 this
When can freely swing adjust tension and compensate belt variable quantity.Fig. 6-c shows buffer unit peace as an example
On the pedestal 40.
Two stretchers respectively independently generate damping: described since first stretcher 10 can be rotated around secure component 19
Second stretcher 20 is respective to be rotated around secure component 29, therefore first stretcher 10 and second stretcher 20 can
The structure for generating damping, i.e., described first damping unit 13 and second damping unit to be arranged on respective rotation center
23, allow first stretcher 10 and second stretcher 20 independently to generate damping.
Fig. 7-a, 7-b show a kind of concrete form of the invention, and generating damping principle is the positive pressure generated by disc spring 71
It forces on pressing plate 72, makes relative motion occurs between pressing plate 72 and bushing 73 to generate damping torque, according to train demand, described the
The damping of one damping unit 13 and second damping unit 23 may be designed as different, which can reduce slack list and become tight
Belt thrust makes stretcher generate the speed swung when side, guarantees that pilled-in selvedge becomes slack list stretcher and has sufficient time to compensate band
The elongation of section prevents train from skidding and noise and abnormal sound occur, due to reducing stretcher to ensure that slack list band section tension
Slack list becomes the speed of pilled-in selvedge stretcher swing, also just reduces tensioner arm to the shock dynamics and stroke speed of limiting device,
Prevent the abrasion of limiting device transition.Although above-mentioned two stretcher 10 and 20 independently generates damping, association is to be together
System provides damping.
The coupled movements of two stretchers: the association belt variable damping unit 30 can be spring like device.Fig. 8 is shown
A kind of concrete form of the invention, cardinal principle are the increase rotation centers 27,28 on two tensioner arms, are increased in two rotation centers
Add spring 82, when first tensioner arm 11 or second tensioner arm 21 are pushed by belt 2 by compressed spring 82, so that institute
The second tensioner arm 21 or first tensioner arm 11 is stated to be associated with and move together under spring promotion.
The spring damping structure 33 on the association belt variable damping unit 30: increasing in coupled movements mechanism can
Variable damping is arranged damping when compression damping is greater than elongation and damping increases with the increase of speed such as spring-like part.Fig. 8 shows
A kind of concrete form of the invention is gone out, main realization principle is to increase hydraulic mechanism 81 in the spring, is controlled by pressure
The damping that spring-compressed and elongation are can also be used other structures and substitute the damping mechanism according to train demand, in this way can be by skin
The belt thrust swing that causes another stretcher to generate during band becomes pilled-in selvedge from slack list passes to from pilled-in selvedge and becomes
That stretcher of slack list band section guarantees the stretcher for becoming slack list band section from pilled-in selvedge to the compensation speed extended with section belt
Degree prevents from generating skidding and noise because slack list stretcher compensation speed is inadequate, also can more preferably guarantee the stretcher course of work
In pivot angle so that either which stretcher compressed spring damping mechanism can generate very two tensioner arms during the work time
Big damping force reduces stretcher pivot angle.
The rotation center of the spring damping structure 33: to enable the spring damping structure 33 preferably to adapt to open
The variation of tight device position, prevents the spring damping structure 33 from losing spring pressure and tensioner arm because of moment of flexure during the motion
Between the power transmitted, needing to increase at spring mechanism both ends can be around the rotation center 27 and 28 of tensioner arm rotation, such energy
It enough allows the spring damping structure 33 to adapt to the variation of two tensioner arm angles very well, can preferably guarantee the spring damping structure
33 service life.
Above content is enumerating for specific embodiments of the present invention, for the equipment and structure of wherein not detailed description, is answered
When being interpreted as that the existing common apparatus in this field and universal method is taken to be practiced.
The above embodiment of the present invention is only to illustrate that technical solution of the present invention is used simultaneously, only the column of technical solution of the present invention
It lifts, the technical solution and its protection scope being not intended to restrict the invention.Using equivalent technologies mean, equivalent apparatus etc. to this hair
The improvement of technical solution disclosed in bright claims and specification is considered to be without departing from claims of the present invention
And range disclosed in specification.
Claims (5)
1. the two-way tensioning apparatus of a kind of bi-directional association and belt variable damping unit, it is characterised in that: the device includes:
One pedestal；
One first stretcher, first stretcher are rotatablely arranged at the pedestal；First stretcher includes one the
One tensioner arm, one first tensioning wheel, one first damping unit and one first position limiting structure, first tensioning wheel are rotationally set
It is placed in one end of first tensioner arm, first damping unit is set on first tensioner arm, passes through described first
First tensioner arm is rotatablely arranged at the pedestal by damping unit, and first position limiting structure is set on pedestal；
First position limiting structure is block from being set on the outside of base end upper surface and fills with the first buffering with the block
It sets to be formed, the outer end face of the first buffer unit is adjacent with the first tensioner arm, and the first position limiting structure and the base engagement limit institute
The first tensioner arm is stated around the slewing area of first rotating shaft；
One second stretcher, second stretcher are rotatablely arranged at the pedestal；And
One end of one association belt variable damping unit, the association belt variable damping unit is rotatably connected at described first
Tight device, the other end of the association belt variable damping unit are rotatably connected at second stretcher, first tensioning
Device and second stretcher are located at the two sides of the pedestal；
Second stretcher includes one second tensioner arm, one second tensioning wheel, one second damping unit and one second limit knot
Structure, second tensioning wheel are rotatablely arranged at one end of second tensioner arm, and second damping unit is set to institute
It states on the second tensioner arm, second tensioner arm is rotatablely arranged at by the pedestal, institute by second damping unit
The second position limiting structure is stated to be set on pedestal.
2. two-way tensioning apparatus according to claim 1, it is characterised in that: second position limiting structure is by being set to bottom
Seat end upper surface on the outside of block and with the block cooperation the second buffer unit formed, the outer end face of the second buffer unit with
Second tensioner arm is adjacent, the second position limiting structure and the base engagement, limits second tensioner arm and turns around the second shaft
Dynamic range.
3. two-way tensioning apparatus according to claim 1, it is characterised in that: include in the association belt variable damping unit
One Hookean spring and variable damping device.
4. two-way tensioning apparatus according to claim 1, it is characterised in that: the association belt variable damping unit includes one
The both ends of spring damping structure, spring damping structure have one first mounting hole and one second mounting hole, first stretcher
It is rotatably connected at spring damping structure by first mounting hole, second stretcher passes through second mounting hole
Rotationally it is connect with spring damping structure.
5. two-way tensioning apparatus according to claim 1, it is characterised in that: the association belt variable damping unit includes one
For fixing the first stretcher in the first locked pin and one on the pedestal for fixing the second stretcher in the pedestal
The second locked pin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610452916.XA CN106090156B (en) | 2016-06-21 | 2016-06-21 | A kind of two-way tensioning apparatus of bi-directional association and belt variable damping unit |
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| CN201610452916.XA CN106090156B (en) | 2016-06-21 | 2016-06-21 | A kind of two-way tensioning apparatus of bi-directional association and belt variable damping unit |
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| CN106090156B true CN106090156B (en) | 2018-12-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207328734U (en) * | 2017-06-28 | 2018-05-08 | 浙江鑫驱科技有限公司 | A kind of torque detecting apparatus of Moped Scooter |
| CN107654596A (en) * | 2017-09-06 | 2018-02-02 | 宁波丰茂远东橡胶有限公司 | The two-way tensioning apparatus of the big double damping structures of the free degree |
| CN107975573B (en) * | 2017-11-24 | 2021-05-04 | 重庆长安汽车股份有限公司 | Tensioning wheel with bidirectional adjusting function and engine front end wheel system |
| CN110529571A (en) * | 2018-05-24 | 2019-12-03 | 宁波丰茂远东橡胶有限公司 | Transmission belt tension equipment and its application |
| CN109695677B (en) * | 2019-03-07 | 2023-12-05 | 河北工业大学 | Automatic tensioner with gas-liquid reinforcement cylinder |
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| US6648783B1 (en) * | 1999-06-11 | 2003-11-18 | INA Wälzlager Schaeffler oHG | Tensioning device for traction means such as belts or chains |
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| CN106090156A (en) | 2016-11-09 |
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Address after: 315400 ce10, Far East Industrial City, Yuyao Economic Development Zone, Ningbo City, Zhejiang Province Patentee after: Zhejiang Fengmao Technology Co.,Ltd. Address before: 315400 ce10, Far East Industrial City, Yuyao Economic Development Zone, Ningbo City, Zhejiang Province Patentee before: Ningbo Fengmao Far-East Rubber Co.,Ltd. |