CN110230675A - A kind of bi-directional association formula tensioner apparatus - Google Patents
A kind of bi-directional association formula tensioner apparatus Download PDFInfo
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- CN110230675A CN110230675A CN201910418729.3A CN201910418729A CN110230675A CN 110230675 A CN110230675 A CN 110230675A CN 201910418729 A CN201910418729 A CN 201910418729A CN 110230675 A CN110230675 A CN 110230675A
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- tensioner arm
- arm
- tensioner
- bushing
- boss
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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
- F16H7/0831—Means for varying tension of belts, ropes, or chains with vibration damping means of the dry friction type
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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
- F16H7/0836—Means for varying tension of belts, ropes, or chains with vibration damping means of the fluid and restriction type, e.g. dashpot
-
- 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
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
- F16H7/1218—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the dry friction type
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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
- F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
- F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
- F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
- F16H7/1236—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the fluid and restriction type, e.g. dashpot
-
- 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
- F16H2007/0842—Mounting or support of tensioner
-
- 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
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
- F16H2007/0865—Pulleys
-
- 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
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0893—Circular path
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention belongs to new-energy automobile design field more particularly to a kind of bi-directional association formula tensioner apparatus.Comprising: pedestal, pedestal includes annular base plate and pivoting device, and pivoting device is arranged on annular base plate；Cooperation is equipped with the first tensioner arm on the pivoting device, and the first tensioner arm can be rotated around the axial line of pivoting device；Cooperation is equipped with the second tensioner arm on first tensioner arm, and the second tensioner arm is pivotably mounted on the first tensioner arm by bushing；First tensioner arm and the second tensioner arm are by the first damping unit realization bi-directional association, and one end of the first damping unit is connect with the first tensioner arm, the other end is connect with the second tensioner arm；The second damping unit is additionally provided between first tensioner arm and the pedestal.Flexible variable caused by quickly compensation belt is due to when elastic state switches rapidly can be achieved in the present invention, maintains belt tension to stablize, and reduce the vibration and noise of system, it is ensured that MGU effectively and stably works in different modes.
Description
Technical field
The invention belongs to new-energy automobile design field more particularly to a kind of bi-directional association formula tensioner apparatus.
Background technique
Global energy crisis deepens constantly, and environmental pollution increasingly sharpens, the regulation driving being increasingly stringenter, traditional power
Gradually using the technologies such as MHEV(48V-BSG), HEV, PHEV, RE, EV and FLEX, wherein 48V-BSG can be in traditional IC E(
Combustion engine) on upgrade and reach the rate of economizing gasoline of 10%-14%.The technical costs is low simultaneously, the period is short, is that OEM is extensive both at home and abroad at present
The technology path used.The technology has used electronic/power generation all-in-one machine (MGU:Motor Generator Unit), bi-directional association
Formula stretcher (BSG) and high-performance belt.
BSG accessory drive system usually has there are four types of operating mode: electric boosted, starting, energy regenerating and automatic start-stop,
Several modes often mutually switch, and operating condition is complicated, and the belt band section for being mounted on the two sides MGU is caused to be frequently necessary to switch rapidly
Elastic state maintains the stabilization of belt tension to generate different flexible variables.Meanwhile NVH is improved in order to reach
(Noise, Vibration, Harshness) performance often needs to reduce vibration, the noise etc. of belt band section using damping unit.
In order to existing damping unit there are the problem of, improve service life, traditional BSG accessory drive system is frequently with two
A unidirectional automatic tensioner with damping mechanism.This method meets maintenance to a certain extent, and belt tension is stable wants
It asks, but suffers from the drawback that at high cost using two stretchers, 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, and NVH complaint is more, is unable to satisfy projected life；Pilled-in selvedge tension is different when MGU is as starting motor
Chang great, if the Bearing with wheel service life will be influenced whether by not limiting the cornerite of pilled-in selvedge stretcher；In tetra- kinds of mode conversions of MGU
During, the variation of pilled-in selvedge and slack list with segment length is very fast, and two independent stretchers can not achieve quick compensation, to protect
The required appropriate tension of card system.
Such as a kind of Patent Office of the People's Republic of China's Dual directional tightener and automobile applied to BSG train disclosed on January 18th, 2019
The invention patent mandate of engine system, authorizes Publication No. CN106122400B, and stretcher swings setting using two
Tensioner arms, internal connected by torsional spring generate elasticity tension, and realization is bilateral to motor to be tensioned, and is adapted at left and right sides of motor
Since the edge slack of different working condition driving belt exchanges.But its stretcher compensation corresponding speed is limited, and tensioner arms are stablized
Property is limited.
Summary of the invention
It is slow to solve existing stretcher response speed, it cannot achieve quickly compensation to ensure appropriate tension etc. needed for system
Problem, the present invention provides a kind of bi-directional association formula tensioner apparatus.It will realize following purpose: one, improving the benefit to belt
Speed is repaid, realizes that flexible variable caused by quickly compensation belt is due to when elastic state switches rapidly maintains belt tension steady
It is fixed, it is ensured that system is able to maintain appropriate tension in the process of running；Two, absorption and sluggish are realized by the setting of damping unit
The impact of tight arm, the vibration of reduction system and noise and the stability for ensuring single unit system, to improve service life；Three, facilitate whole
Body device is fixedly mounted, and improves applicability and practicability.
To achieve the above object, the invention adopts the following technical scheme:
A kind of bi-directional association formula tensioner apparatus, comprising:
Pedestal, pedestal include annular base plate and pivoting device, and pivoting device is arranged on annular base plate；
Cooperation is equipped with the first tensioner arm on the pivoting device, and the first tensioner arm can be rotated around the axial line of pivoting device；
Cooperation is equipped with the second tensioner arm on first tensioner arm, and the second tensioner arm is pivotably mounted on first by bushing
On tight arm；
First tensioner arm and the second tensioner arm pass through the first damping unit realization bi-directional association, one end of the first damping unit
It is connect with the first tensioner arm, the other end is connect with the second tensioner arm；
The second damping unit is additionally provided between first tensioner arm and the pedestal.
Preferably, the pivoting device includes the hollow round table for being fixedly mounted on annular base plate upper surface and fixed peace
Preload rotary table mounted in the hollow round table upper surface；The hollow round table is equal with the internal diameter of rotary table is pre-tightened and is coaxially disposed.
Preferably, second damping unit includes pre- clamping hub, damping sheet, the first cover board and spring part；Pre- Pian tight liner
The hollow round table outer end face of the inner headed face of set and the pedestal pivoting device keeps the pivot of concentricity to cooperate；The damping sheet,
The middle part hollow out of first cover board and spring part, and be respectively provided with one and keep the logical of concentricity cooperation with pedestal hollow round table periphery
Hole, each through-hole internal diameter are equal；The damping sheet is arranged between the first cover board and the pedestal of the first tensioner arm；First cover board
It is set between the spring part and the damping sheet；The spring part is any one in butterfly spring or waveform spring,
And it is set between the annular base plate of the pedestal and the first cover board with precompressed state, spring part generates lasting axis
To normal pressure.
Preferably, first tensioner arm include can around pedestal pivoting device center rotate bottom plate, to pacify
Fill the first tensioning wheel first boss, the second boss to connect the first damping unit and the third to install the second tensioner arm
Boss；The bottom plate outer is that triangle is cyclic annular, and the inner headed face of bottom plate is coaxially set in the periphery of the preload rotary table of the pedestal
On, and can be rotated around the center of the pedestal pivoting device；The bottom plate upper surface is circumferentially uniformly arranged first boss, second convex
Platform and third boss.
Preferably, second tensioner arm is divided into first arm of force and second arm of force, first arm of force and second arm of force it is interior
End handover and junction is equipped with pivoting hole, bushing is set on pivoting hole, and the first tensioner arm passes through the lining that is mounted on pivoting hole
Pivotable connection is realized in the third boss cooperation of set and first tensioner arm；The outer end of first arm of force is connected equipped with tensioner arm
The outer end in hole, second arm of force is equipped with tensioning wheel erecting bed.
Preferably, first Damping rotation shaft includes Hydraulic Elements and helical spring；The both ends of the Hydraulic Elements point
Not She You the first mounting hole and the second mounting hole, the first mounting hole is by the second boss of bolt and the first tensioner arm with pivotable
Mode be connected, the second mounting hole by bolt with the tensioner arm connecting hole on first arm of force of the second tensioner arm with pivotable
Mode be connected.
Preferably, there are two the bushing sets, respectively the first bushing and the second bushing, the first bushing and the second bushing
Be oppositely arranged up and down, may be pivotally mounted to the second tensioner arm pivoting hole and first tensioner arm third boss it
Between；First bushing and the second bushing shapes and sizes are identical, and cross section is L shape, and pair of the first bushing and the second bushing
Title center is overlapped with the third boss axial line of the first tensioner arm；First bushing and the second bushing interference are installed on pivoting hole
Between third boss.
Preferably, being equipped with can rotate relative to first boss axial line the in the first boss of first tensioner arm
One tensioning wheel；The tensioning wheel erecting bed of second tensioner arm is equipped with the second tensioning that can be rotated relative to tensioning wheel erecting bed
Wheel；The upper surface of first tensioning wheel and the second tensioning wheel flushes.
Preferably, the annular base plate is equipped with the through-hole of one with the cooperation of MGU motor case, and it is bolted peace
On MGU casing.
The beneficial effects of the present invention are:
1) bi-directional association formula tensioner apparatus of the present invention is, it can be achieved that quickly compensation belt when elastic state switches rapidly due to drawing
The flexible variable risen maintains belt tension to stablize, and reduces slip risk, and provide sufficient resistance in time by double damping units
Buddhist nun's torque absorbs the impact with sluggish tensioner arm, the vibration and noise of system is reduced, to guarantee that MGU has in different modes
It imitates and steadily works, improve the dynamic response of auto NVH performance and system；
2) pedestal of this programme is bolted, and is convenient for space layout, and can be by changing bolt hole position to be adapted to
Different motor head accessory wheel system layout, to help to optimize the rational deployment and vehicle's center of gravity cloth in enging cabin
Office, promotes the lightweight process of automobile.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the parts explosion of Fig. 1；
Fig. 3 is the structural schematic diagram of the first tensioner arm；
Fig. 4 is the structural schematic diagram of pedestal；
Fig. 5 is the structural schematic diagram of the second tensioner arm；
Fig. 6 is the cross-sectional view in the middle part of the second damping unit；
Fig. 7 is the BSG train schematic diagram under automatic start-stop mode or energy regenerating motor mode；
Fig. 8 is the BSG train schematic diagram under starting motor mode or assistant mode；
In figure: bi-directional association formula tensioner apparatus 1, belt 3, driving wheel 4, pedestal 20, annular base plate 21, pivots loadwheel 2
Device 22, hollow round table 23, preload rotary table 24, the first tensioner arm 30, first boss 31, bottom plate 32, second boss 33, third are convex
Platform 34, the first damping unit 40, the first mounting hole 41, Hydraulic Elements 42, helical spring 43, the tensioning of the second mounting hole 44, second
Arm 50, pressure ring 51, the first bushing 52, the second bushing 53, tensioner arm connecting hole 54, first arm of force 55, pivoting hole 56, second arm of force
57, tensioning wheel erecting bed 58, the second tensioning wheel 60, the second damping unit 70, the second cover board 71, pre- clamping hub 72, damping sheet 73,
First cover board 74, spring part 75, the first tensioning wheel 80.
Specific embodiment
Further clear detailed description explanation is made to the present invention below in conjunction with specific embodiment and Figure of description.This
Field those of ordinary skill will realize the present invention based on these explanations.In addition, being related in following the description
The embodiment of the present invention be generally only the present invention a part embodiment, instead of all the embodiments, it is clear that this field
Technical staff can carry out various modification and variations without departing from the spirit and scope of the present invention to the invention, if in this way, originally
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to packet to these modifications and variations of invention
Including including these modification and variations.Therefore, based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made is worked, should fall within the scope of the present invention.
Embodiment
A kind of bi-directional association formula tensioner apparatus 1 as shown in Figures 1 to 6 comprising:
Pedestal 20, the first tensioner arm 30, the second tensioner arm 50, the first damping unit 40 and the second damping unit 70；
The pedestal 20 is to carry and install all parts comprising annular base plate 21 and pivoting device 22；
The 21 middle part hollow out of annular base plate is equipped with the through-hole of one with the cooperation of MGU motor case, and is bolted on MGU
On motor case, the limiting groove of the rectangle of four same shapes is averagely arranged in 21 outer of annular base plate；
The pivoting device 22 is arranged in 21 upper surface of annular base plate, is made of preload rotary table 24 and hollow round table 23, empty
Heart rotary table 23 is arranged in 21 upper surface of annular base plate, is fixedly mounted, and pre-tightens rotary table 24 and be fixedly mounted on hollow round table 23
Upper surface；
The preload rotary table 24 is coaxially disposed with hollow round table 23, internal diameter is equal, is pre-tightened 24 outer diameter of rotary table and is less than hollow round table 23
Outer diameter；
First tensioner arm 30 is set on pivoting device 22, and the first tensioner arm 30 can be rotated around 22 axle center of pivoting device；
First tensioner arm 30 include can around 22 center of pedestal pivoting device rotate bottom plate 32, to install the first tensioning wheel
80 first boss 31, the second boss 33 to connect the first damping unit 70 and the third to install the second tensioner arm 50
Boss 34, bottom plate 32 are used to cooperate the installation that is arranged of pivoting device 22, and inner headed face is coaxially set in the pedestal and pre-tightens circle
On the periphery of platform 24, and it can be rotated around the center of the pedestal pivoting device 22；
32 outer of bottom plate is cyclic annular in triangle, and lower end surface and damping sheet 73 keep concentricity cooperation, is arranged circumferentially the
One boss 31, second boss 33 and third boss 34, three of them boss is arranged at the upper surface of bottom plate 32, and base plate is equipped with
One through-hole cooperated with preload rotary table 24；
The level cross-sectionn of the first boss 31, second boss 33 and third boss 34 is circle；
The first tensioning wheel 80 that can be rotated relative to 31 axial line of first boss, second boss 33 are installed in the first boss 31
Pivotable connection is realized by the first mounting hole 41 of bolt and the first damping unit 40；
Second tensioner arm 50 is set on the third boss 34 of the first tensioner arm 30, and the second tensioner arm 50 can be with respect to third
34 center of boss is rotated；
Second tensioner arm 50 is illustrated in figure 5 a longer shaped piece, and the second tensioner arm 50 is divided into along its length direction
One arm of force 55 and second arm of force 57, first arm of force 55 and second arm of force, 57 inner end mutually join, and inner end joint is equipped with through-hole type
Pivoting hole 56, the outer end of first arm of force 55 is equipped with tensioner arm connecting hole 54, and the outer end of second arm of force 57 is equipped with tensioning wheel installation
Platform 58；
Second tensioner arm 50 is by being mounted on the first bushing 52 of pivoting hole 56, the second bushing 53 and the first tensioner arm 30
The cooperation of third boss 34, which is realized, to be pivotably mounted, and the second tensioner arm 50 can be with respect to the third boss of the first tensioner arm 30 after installation
34 centers are rotated；
First bushing 52 is identical with the shapes and sizes of the second bushing 53, and cross section is L-type, and the first bushing 52 and
The symmetrical centre of two bushings is overlapped with the axial line of the third boss 34 of the first tensioner arm 30, is then pivotly set in first
Between the third boss 34 of tensioner arm 30 and the pivoting hole 56 of the second tensioner arm 50；On first bushing 52 and the second bushing 53
Under it is positioned opposite, the supporting surface of the flange upper surface of the first bushing 52 and the first tensioner arm third boss 34 cooperates, second
The flange upper surface of bushing 53 then cooperates with the end face of a pressure ring 51；
The pressure ring 51 is a cylindrical body for having through-hole, to realize the axial limit of first bushing 52 and the second bushing 53
Position；
The tensioning wheel erecting bed 58 is equipped with the second tensioning wheel 60 that can be rotated relative to tensioning wheel erecting bed 58；
First damping unit 40 includes Hydraulic Elements 42 and helical spring 43, and the first damping unit 40 can generate damping force
And spring force, for absorbing the vibratory impulse with sluggish tensioner arm；
The Hydraulic Elements 42 are a piston-type hydro pressure damping element, are respectively equipped with the first mounting hole at the both ends of Hydraulic Elements 42
41 and second mounting hole 44, the first mounting hole 41 by the second boss 33 of bolt and the first tensioner arm 30 pivotally
It is connected, the second mounting hole 44 passes through the tensioner arm connecting hole 54 on 50 first arm of force 55 of bolt and the second tensioner arm pivotably
Mode is connected；
The helical spring 43 is installed on the first mounting hole 41 and second of Hydraulic Elements 42 in assembly with precompressed state
Between mounting hole 44；
First tensioner arm 30 and second tensioner arm 50 are obtained by the first damping unit 40 realization bi-directional association
Damping friction torque and spring torque；
Second damping unit 70 from top to bottom successively includes pre- clamping hub 72, damping sheet 73, the first cover board 74 and spring part
75, elastic component between pedestal 20 and the first tensioner arm 30 persistently to generate axial normal pressure；
The spring part 75 is preferably any one in waveform spring or butterfly spring, and spring part 75 as shown in Figure 2 is waveform
Spring；
The periphery of the hollow round table 23 of the pivoting device 22 of the inner headed face and pedestal 20 of the pre- clamping hub 72 keeps same
The pivot of axis degree cooperates, and the flange face of the pre- clamping hub 72 and the periphery bottom plate with first tensioner arm 30 respectively
32 upper surface and inner headed face cooperation；
For first cover board, the 74 outer arrangement there are four the rectangular boss that shape is identical, size is identical and downwardly convex, rectangle is convex
Limiting groove on platform and 20 annular base plate 21 of pedestal cooperates, and 74 middle part hollow out of the first cover board, inner ring end face and pedestal
20 23 outer ring end face of hollow round table keeps concentricity cooperation；
The damping sheet 73 is arranged between the first cover board 74 and the pedestal of the first tensioner arm 30, and damping sheet 73 is wear-resistant material,
It is to increasing friction force, raising damping force；
The annular base plate of pedestal 20 is arranged in precompressed state for the spring part 75, i.e. waveform spring in the present embodiment
21 and first between cover board 74, to generate lasting axial normal pressure；
The hollow round table 23 of 20 pivoting device 22 of the pre- clamping hub 72 and pedestal is interference fitted, the inner circle end face of pre- clamping hub 72
Cooperate with the circle end face of hollow round table 23, the shaft shoulder and circle end face of pre- clamping hub 72 are then matched with 30 end face of the first tensioner arm
It closes, i.e., the 32 inner circle end face of bottom plate and upper surface interference of the circle end face of pre- clamping hub 72 and shaft shoulder end face and the second tensioner arm 50
Cooperation, 32 lower end surface of bottom plate of the second tensioner arm 50 is contacted with damping sheet 73；
72 upper end of pre- clamping hub is additionally provided with the second cover board 71, and the second cover board 71 is a cylindrical body for having through-hole, to reality
The now axial limiting of pre- clamping hub 72, and the inner circle end face of the second cover board 71 and the circle end face cooperation for pre-tightening rotary table 24；
When second damping unit 70 works: waveform spring is mounted on 20 annular base plate of pedestal first with precompressed state
21 and first between cover board 74, can produce lasting pretightning force；When the work of whole bi-directional association formula tensioner apparatus 1, damping
Plate 73 and pre- clamping hub 72 can be rotated relative to the bottom plate 32 of the first tensioner arm 30 and the first cover board 74 of the second damping unit 70, and
Frictional resistance is generated under the pretightning force effect of waveform spring and forms frictional damping, and damping sheet can compensate for this waveform spring
73, the abrasion variable quantity of the bottom plate 32 of pre- 72 flange face of clamping hub and the first tensioner arm 30, it is ensured that can produce lasting normal pressure.
The upper surface of first tensioning wheel 80 and the second tensioning wheel 60 flushes and two end faces can be protected always at work
It holds in the same plane, and parallel with 21 end face of annular base plate of pedestal 20.
When use:
As shown in Figure 7 and Figure 8, the train layout for a typical FEAD system (front end accessory drive system) when static
Figure, which has driving wheel 4(such as crank wheel), belt 3, loadwheel 2(such as air-conditioning belt wheel), MGU motor and bi-directional association formula
Tensioner apparatus 1 forms, and when FEAD works, can compensate MGU motor two sides belt rapidly by bi-directional association formula tensioner apparatus 1
The 3 flexible variables with section maintain the tension appropriate of belt 3, guarantee that whole system efficiently switches and stablize in different modes fortune
Turn；
Four kinds of operating modes of MGU motor are frequently necessary to switch mutually, and operating condition is complicated, and the belt 3 of MGU motor two sides is with section
When being frequently necessary to switch elastic state rapidly, this can cause very big impact to system, the stability of system be influenced, in order to solve
The problem, the present invention in bi-directional association formula tensioner apparatus 1 guarantee 3 tension with section of MGU motor two sides belt can obtain rapidly
It must compensate, maintain to stablize, and arrange the first damping unit 40 and the second damping unit 70, the vibration of attenuation factor improves NVH
Performance, wherein the working principle of this bi-directional association formula tensioner apparatus 1 is as follows:
When being in automatic start-stop mode or energy recuperation mode, MGU motor is tight with section as driving link, left side belt 3
Side, right side belt 3 are slack list with section.At this moment, the first tensioning wheel 80 of the first tensioner arm 30 is born from 3 tension of pilled-in selvedge belt
Effect is moved along the direction far from MGU motor center, pushes the bottom plate 32 of the first tensioner arm 30 around 20 pivoting device 22 of pedestal
23 center rotating of hollow round table push the second tensioner arm 50 around the and under the connecting rod effect of the first damping unit 40
The center rotating of the third boss 34 of one tensioner arm 30, the then 60 bias MGU motor of the second tensioning wheel on the second tensioner arm 50
Right side belt 3 with section, suitably increase the tension of this section.
When being in start-up mode or electric boosted mode, MGU motor is with section as Passive part, left side belt 3
Slack list, right side belt 3 are pilled-in selvedge with section.At this moment, the second tensioning wheel 60 of the second tensioner arm 50 bears the work of 3 tension of pilled-in selvedge belt
With being moved along far from the direction of MGU motor center, push the second tensioner arm 50 around the third boss 34 of the first tensioner arm 30
Center rotating push the bottom plate 32 of the first tensioner arm 30 around pedestal 20 and under the connecting rod effect of the first damping unit 40
23 center rotating of hollow round table of pivoting device 22, the first tensioning wheel being then fitted into 30 first boss 31 of the first tensioner arm
The left side belt 3 of 80 bias MGU motors suitably increases the tension of this section with section.
Claims (9)
1. a kind of bi-directional association formula tensioner apparatus characterized by comprising
Pedestal, pedestal include annular base plate and pivoting device, and pivoting device is arranged on annular base plate；
Cooperation is equipped with the first tensioner arm on the pivoting device, and the first tensioner arm can be rotated around the axial line of pivoting device；
Cooperation is equipped with the second tensioner arm on first tensioner arm, and the second tensioner arm is pivotably mounted on first by bushing
On tight arm；
First tensioner arm and the second tensioner arm pass through the first damping unit realization bi-directional association, one end of the first damping unit
It is connect with the first tensioner arm, the other end is connect with the second tensioner arm；
The second damping unit is additionally provided between first tensioner arm and the pedestal.
2. a kind of bi-directional association formula tensioner apparatus according to claim 1, which is characterized in that the pivoting device includes
The hollow round table for being fixedly mounted on annular base plate upper surface and the preload rotary table for being fixedly mounted on the hollow round table upper surface；
The hollow round table is equal with the internal diameter of rotary table is pre-tightened and is coaxially disposed.
3. a kind of bi-directional association formula tensioner apparatus according to claim 2, which is characterized in that second damping unit
Including pre- clamping hub, damping sheet, the first cover board and spring part；The inner headed face of pre- clamping hub is hollow with the pedestal pivoting device
Rotary table outer end face keeps the pivot cooperation of concentricity；The middle part hollow out of the damping sheet, the first cover board and spring part, and be respectively provided with
One keeps the through-hole of concentricity cooperation with pedestal hollow round table periphery, and each through-hole internal diameter is equal；The damping sheet setting exists
Between first cover board and the pedestal of the first tensioner arm；First cover board is set between the spring part and the damping sheet；
The spring part is any one in butterfly spring or waveform spring, and is set in the pedestal with precompressed state
Between annular base plate and the first cover board, spring part generates lasting axial normal pressure.
4. a kind of bi-directional association formula tensioner apparatus according to claim 1, which is characterized in that the first tensioner arm packet
Include can around pedestal pivoting device center rotate bottom plate, to install the first tensioning wheel first boss, to connect first
The second boss of damping unit and the third boss to install the second tensioner arm；The bottom plate outer is that triangle is cyclic annular, bottom plate
Inner headed face be coaxially set on the periphery of preload rotary table of the pedestal, and can be revolved around the center of the pedestal pivoting device
Turn；The bottom plate upper surface is circumferentially uniformly arranged first boss, second boss and third boss.
5. a kind of bi-directional association formula tensioner apparatus according to claim 4, which is characterized in that second tensioner arm point
For first arm of force and second arm of force, the inner end of first arm of force and second arm of force joins and junction is equipped with pivoting hole, and bushing is arranged
On pivoting hole, the first tensioner arm is cooperated real by the third boss of the bushing and first tensioner arm that are mounted on pivoting hole
Existing pivotable connection；The outer end of first arm of force is equipped with tensioner arm connecting hole, and the outer end of second arm of force is equipped with tensioning wheel erecting bed.
6. a kind of bi-directional association formula tensioner apparatus according to claim 5, which is characterized in that first Damping rotation shaft
Including Hydraulic Elements and helical spring；The both ends of the Hydraulic Elements are respectively equipped with the first mounting hole and the second mounting hole, and first
Mounting hole is pivotally connected by bolt with the second boss of the first tensioner arm, and the second mounting hole passes through bolt and institute
The tensioner arm connecting hole stated on second first arm of force of tensioner arm is pivotally connected.
7. a kind of bi-directional association formula tensioner apparatus according to claim 5, which is characterized in that the bushing is equipped with two
A, respectively the first bushing and the second bushing, the first bushing and the second bushing are oppositely arranged up and down, may be pivotally mounted to described
Between second tensioner arm pivoting hole and the third boss of first tensioner arm；First bushing and the second bushing shape and big
Small identical, cross section is L shape, and the third boss axial line of the symmetrical centre of the first bushing and the second bushing and the first tensioner arm
It is overlapped；First bushing and the second bushing interference are installed between pivoting hole and third boss.
8. a kind of bi-directional association formula tensioner apparatus according to claim 5, which is characterized in that first tensioner arm
The first tensioning wheel that can be rotated relative to first boss axial line is installed in first boss；The tensioning wheel of second tensioner arm is pacified
It fills platform and is equipped with the second tensioning wheel that can be rotated relative to tensioning wheel erecting bed；The upper end of first tensioning wheel and the second tensioning wheel
Face flushes.
9. a kind of bi-directional association formula tensioner apparatus according to claim 1, which is characterized in that the annular base plate is set
There are the through-hole of one with the cooperation of MGU motor case, and is mounted by means of bolts on MGU casing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910418729.3A CN110230675A (en) | 2019-05-20 | 2019-05-20 | A kind of bi-directional association formula tensioner apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910418729.3A CN110230675A (en) | 2019-05-20 | 2019-05-20 | A kind of bi-directional association formula tensioner apparatus |
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| CN110230675A true CN110230675A (en) | 2019-09-13 |
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| CN111720502A (en) * | 2020-07-10 | 2020-09-29 | 宁波丰茂远东橡胶有限公司 | Two-way tensioning device |
| EP4060205A4 (en) * | 2019-11-14 | 2023-08-23 | Gates Corporation | Dual-arm tensioner |
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Application publication date: 20190913 |