CN101713450A - Belt drive - Google Patents
Belt drive Download PDFInfo
- Publication number
- CN101713450A CN101713450A CN200910205207A CN200910205207A CN101713450A CN 101713450 A CN101713450 A CN 101713450A CN 200910205207 A CN200910205207 A CN 200910205207A CN 200910205207 A CN200910205207 A CN 200910205207A CN 101713450 A CN101713450 A CN 101713450A
- Authority
- CN
- China
- Prior art keywords
- counterweight
- wheel
- circumference
- drive unit
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
- F16H7/023—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts with belts having a toothed contact surface or regularly spaced bosses or hollows for slipless or nearly slipless meshing with complementary profiled contact surface of a pulley
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
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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
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Gear Transmission (AREA)
Abstract
The present invention relates to belt drive. The system (1) has a drive wheel (2) and an output wheel (3) e.g. oil pump toothed wheel, connected together via a drive unit (4) e.g. toothed belt. An additional/gear wheel (9) stands in connection with a balance shaft wheel (10) such that the balance wheel is propelled by the additional/gear wheel. A counterweight (11) is designed with a circumference-filling out element (17) with an outer diameter such that a peripheral speed of the counterweight together with the circumference-filling out element and a running speed of the drive unit are different.
Description
Technical field
The present invention relates to drive system, especially for the drive system of explosive motor.
Background technique
The present invention relates to drive system, drive system especially for explosive motor, this drive system comprises actuation gear and at least one driven gear that links together by at least one drive unit, and be arranged on auxiliary wheel (further wheel) on the same axle with driven gear, and be arranged on the trunnion shaft the balance arbor wheel be arranged on identical trunnion shaft on counterweight, auxiliary wheel is connected to the balance arbor wheel so that auxiliary wheel driven equilibrium arbor wheel, and counterweight and circumference potted element are arranged on band and drive in the plane and the drive unit permanent joint.
This drive system is known.For example, this drive system can be used for driving auxiliary unit, and as oil pump, for example the rotation that will distribute to the actuation gear of bent axle by drive unit is delivered to the driven gear of distributing to auxiliary unit, so that drive described oil pump.It also is known that this drive system is used in the main driving (bent axle/camshaft) of explosive motor, yet wherein electric motor also is like this by the system that drive unit (for example cingulum) drives circulation roller screw mandrel (recirculating ball screw) (band driving, electric motor driven power steering system).
Endless chain or tape loop particularly cingulum are used as drive unit basically.The tooth rotating band is advantageously used for the drive unit of motor vehicle and explosive motor basically.Particularly, the use of cingulum has tangible increase, and cingulum also can be called synchronous band, promptly in a humid environment for comprising the synchronous band of oil.Be contained in the housing that comprises oiling agent or oil in this drive system.For example, actuation gear is the gear of distributing to bent axle and rotating in oil groove.These " wet running " cingulums for example not only are used for main driving but also are used to drive auxiliary unit such as oil pump.Under main situation about driving, use exquisite relatively and expensive clamping system tensioning cingulum.For the cost reason, be used for the main current driving auxiliary unit that is not used in of those clamping systems that drives." wet operation " cingulum drives and does not have a suitable pre-tensioning, yet, have quite impaired dynamic characteristic, for example from actuation gear to the driven gear transfer of torque, cause the cingulum service life shorter.In " the worst situation " or drive system operating trouble of drive system, drive unit or cingulum depart under specific circumstances or deflect away from the gear groove in the location.This causes cingulum to jump tooth and causes control loss in the drive system.
The vibration of bouncing of the tooth on this external intermeshed gear causes the running noise of not expecting.Tooth bounces the vibration nature and also the service life of gear and drive system is had injurious effects.
Therefore tensioning suitably of drive unit so that guarantee the peace and quiet running of drive unit, and is not rocked and serious wearing and tearing.Often use the clamping system of pre-tensioning drive unit for this reason.This comprises the finger wheel tension device (finger tensioning device) that for example has conventional wheel, conventional wheel rotatably is supported in the free end that rotates finger wheel and the zone between actuation gear and driven gear and pushes down drive unit, so that give the pre-tensioning of drive unit expectation.
Although this clamping system on the side (being also referred to as strand (strand)) of the drive unit of tension device is used for preventing to rock and support is contacted with tension device by pre-tensioning, so that clamping system moves more smoothly, although but shortcoming is the tensioning maintenance drive unit tension of drive unit, drive unit rocks in another burst meeting away from tension device between actuation gear and driven gear.Rocking the counterweight that can cause the rotation on drive unit and the trunnion shaft carries out accident and contacts.This can be by providing corresponding to second tension device of first tension device and eliminating away from pushing down drive unit on one of tension device.Yet this has the member that clamping system that shortcoming promptly causes comprises greater number, and this increases weight, receptance and the cost of clamping system significantly.
For preventing the contact of not expecting between drive unit and configuration, the i.e. not controlled joint of the counterweight in drive unit, the claimant finds that the counterweight on trunnion shaft can be arranged in the plane of drive unit, and counterweight is set to wheel shape, engages with drive unit.Such improvement is proved to be success in practice, because this expressly produces the controlled permanent joint of the wheel shape counterweight of trunnion shaft in drive unit.Yet, this perceive gear do not expect bounce vibration.
Summary of the invention
Therefore target of the present invention provides the drive system of the above-mentioned type, prevents that although this drive system is of compact construction gear from bouncing vibration and avoiding above-mentioned shortcoming simultaneously.
According to the present invention, this target realizes by a kind of drive system especially for explosive motor, this drive system comprises actuation gear and at least one driven gear that links together by drive unit, and be arranged on auxiliary wheel on the same axle with driven gear, and balance arbor wheel and be arranged on counterweight on the same trunnion shaft with the balance arbor wheel, auxiliary wheel is connected to the balance arbor wheel so that by auxiliary wheel driven equilibrium arbor wheel, the counterweight that is arranged in the band driving plane engages with drive unit, counterweight and the design of circumference potted element have common outer diameter, so that the peripheral velocity of counterweight and circumference potted element is different from the running speed of drive unit.
Actuation gear, driven gear and drive unit form a unit that is called " band drives " together, should " band drives " be placed in the common plane that is called " band drives the plane ".Auxiliary wheel and balance arbor wheel form the unit that is called " wheel drive " together, and this wheel drive is placed in the common wheel drive plane.Wheel drive plane and band drive the plane and are set parallel to each other.The wheel drive plane can be arranged on before or after the band driving plane in background of the present invention.Drive system for example can be used for driving the oil hydraulic pump of coolant pump, oil pump, petrolift, mechanical supercharger, alternator or power steering system.
In drive system according to the present invention, guarantee to use existing trunnion shaft to depart from and so guide driver by counterweight and circumference potted element.This is directed at the controlled joint of generation in the drive unit and prevents moving of drive unit not expecting in the horizontal.Only be necessary counterweight and circumference potted element are positioned on the trunnion shaft at this.Therefore the level and smooth guiding of drive unit realizes by extremely simple mode.In addition, the circumference potted element is particularly conducive to and prevents that oil from spilling.
In addition, the wheel that comprises balance arbor wheel and auxiliary wheel to or gear mesh between vibration unexpectedly reduce, therefore the scope that a pair of gear relative to each other moves freely reduces, and has for example promptly reduced any backlash, and meshed gears keeps together and do not move.
Counterweight can with the integrated formation of balance arbor wheel.This has reduction receptance and low-dimensional is accomplished advantage originally, because have particularly moving member of less parts.Yet counterweight also might be formed on the balance arbor wheel.In this case, counterweight can enter and be with the mode that drives the plane to stretch out the wheel drive plane.
Counterweight and balance arbor wheel preferably can form two parts separated from one another.For example these can separated from one anotherly reappose and can be along trunnion shaft each interval certain distance in this case.It is feasible that counterweight is improved to circular arc embodiment, for example might design the circumference potted element and cover so that form the circular portion that can link together for the corresponding circular arc that is fit to.Provide the combination of composite (for example plastics) and iron and steel in notion according to the present invention ideally aspect this, have only iron and steel or have only composite (for example plastics) to form counterweight and circumference potted element.
Counterweight and circumference potted element advantageously have rounded periphery.This guarantees that band between counterweight and driven gear drives the uniform guiding of drive unit in the plane and therefore guarantees the level and smooth running of drive unit and do not rock.
Counterweight has the function of enhancing with the circumference potted element, and this composition has the compact structure of the easy running feature of drive unit.
The imbalance of counterweight preferably obtains by depression in the counterweight or otch in this case.In its size with in distributing, these depressions or otch are formed on wittingly by this way and produce predetermined imbalance in the counterweight.This means to be compared to conventional counterweight, the imbalance of this counterweight produces by asymmetrical profile, realizes that imbalance keeps circular profile (counterweight and circumference potted element) simultaneously.
Be the backlash of compensation between auxiliary wheel and balance arbor wheel, for example, auxiliary wheel advantageously supports against the balance arbor wheel.
This support unexpectedly is different from the running speed that promptly is greater than or less than drive unit with counterweight and the peripheral velocity that is arranged on the circumference potted element on the counterweight and realizes, so that the balance arbor wheel supports with respect to auxiliary wheel.This can set by the diameter of counterweight and circumference potted element wittingly.Must consider the thickness of drive unit at this.The diameter of counterweight and circumference potted element is necessary can not be excessive, is pressed on the drive unit in order to avoid cross the important place.If diameter is too small, drive unit will no longer be supported on the excircle of counterweight and circumference potted element on the other hand, and this infringement is led and can be caused rocking.Thereby the such mode of peripheral velocity that forms member to interact by the frictional engagement with drive unit and also can cause being different from the running speed of drive unit is regulated the diameter of counterweight and circumference potted element.
In addition, drive unit can be by particularly with respect at least one the auxiliary tension device tensioning on one of the drive unit of balance arbor wheel location.
Other favourable improvement of the present invention are disclosed in the following description of drawings.
Description of drawings
Fig. 1 is schematically illustrated according to drive system of the present invention;
Fig. 2 illustrates the perspective view of the trunnion shaft that provides balance arbor wheel and carrying counterweight;
Fig. 3 is shown specifically the example of circumference potted element.
Embodiment
In various accompanying drawings, identical parts provide identical reference character, and these parts are only described once basically for this reason.
Fig. 1 illustrates drive system 1.Drive system 1 comprises actuation gear 2 and the driven gear 3 that links together by drive unit 4.These form together and are placed on a band driving 5 in the common band driving plane.
Shown in example embodiment in actuation gear 2 be the gear of the bent axle (not shown) of distributing to explosive motor, after this be called crankshaft gear 2.Driven gear 3 is a gear of distributing to the oil pump of auxiliary unit such as motor vehicle, after this is called oil pump gear 3.Drive unit 4 is set to cingulum 4, is also referred to as synchronous band.Cingulum 4 comprise have tooth 7 flank 6 is arranged and with respect to the outside 8 that flank 6 is arranged.
The auxiliary wheel 9 that is connected to balance arbor wheel 10 is arranged on the (not shown) coaxially with oil pump gear 3.Balance arbor wheel 10 is arranged on the trunnion shaft 16 (not shown among Fig. 1, as to see Fig. 2).Auxiliary wheel 9 and balance arbor wheel 10 form the wheel drive that is placed in the wheel drive plane together.The wheel drive plane parallel drives plane positioning in band, drives plane bias with respect to band.
Be any imbalance that the compensation explosive motor causes, trunnion shaft 16 at least one counterweight 11 of carrying.Yet, do not depart from the scope of the present invention counterweight 11 and can also only distribute to balance arbor wheel 10, but particularly can formation integrated with it.Counterweight 11 with oil pump gear 3, crankshaft gear 2, and cingulum 4 be positioned at band at least and drive in the plane, this is labor more hereinafter.
In this example embodiment, in the view shown in Fig. 1, the wheel drive plane positioning is before band drives the plane.Yet, for not departing from the scope of the present invention, depend on that the space of drive system 1 and any other member is provided with, the wheel drive plane can also be positioned at band and drive after the plane.
In the bearing region between counterweight 11 and oil pump gear 3, the outside 8 of the excircle 12 of counterweight 11 (with circumference potted element 17) contact cingulum 4 is so that the cingulum 4 in this zone between counterweight 11 and oil pump gear 3 is by these members (band drives the plane) guiding.As shown in the figure, cingulum 4 shifts to or controllably is partial to driven gear 3 by counterweight 11.
For realizing the tensioning of cingulum 4, band driving 5 also has the tension device 13 of the reverse pulley 14 that can be routine in this example embodiment.This pushes down the outside 8 of cingulum 4 by finger wheel.If along with time cingulum 4 extends in the vertical, finger wheel supports so that can regulate reverse pulley 14 further to push down cingulum 4, so that increase the tensioning of cingulum 4 once more.
Working principle by the drive system 1 of example shown is described hereinafter.
The oil pump gear 3 that drives as driven gear 3 by drive unit 4 or cingulum 4 as the crankshaft gear 2 of actuation gear 2.For example, gear 2 and gear 3 both rotate in the clockwise direction.With oil pump gear 3 be positioned at one on the axle auxiliary wheel 9 or gear 9 with oil pump gear 3 unequal angular velocity rotations, and driven equilibrium arbor wheel 10.Balance arbor wheel 10 is for example rotation in the counterclockwise direction therefore.Counterweight 11 is arranged on the trunnion shaft 16 with balance arbor wheel 10, therefore for example in the counterclockwise direction to rotate with balance arbor wheel 10 unequal angular velocity.
In a preferred embodiment, regulate the girth of the diameter for example reduce counterweight and circumference potted element 17 and the member that therefore forms, so that poor for unequal angular velocity (with respect to trunnion shaft 16 and balance arbor wheel 10) generation between the running speed of the peripheral velocity (counterweight 11 is with circumference potted element 17) of the member that forms and cingulum 4.Auxiliary wheel 9 and balance arbor wheel 10 relative to each other support by the friction that produces between counterweight 11 and circumference potted element 17 and cingulum 4.This for example is used for eliminating or reduces backlash between auxiliary wheel 9 and balance arbor wheel 10 at least.This prevents or reduces any vibration of not expecting of gear mesh 9,10 at least or bounce vibration and the more level and smooth operation of generation.
Fig. 2 illustrates the front end of the trunnion shaft 16 of carrying balance arbor wheel 10 and counterweight 11.Shown in example embodiment in counterweight 11 be set to the circular arc projection, this circular arc projection be arranged on the one hand on the exposed end face 18 of balance arbor wheel 10 and with respect to this on the axle side end face 19 of balance arbor wheel 10.The part of counterweight 11 is arranged on the wheel drive plane before and relatively partly in band driving plane in this regard.Circumference potted element 17 is distributed to the part that is arranged on the counterweight 11 in the band driving plane so that form member, and this member has the excircle of formation suitably.Design circumference potted element 17 suitably so that it fills the remainder of the whole circumference of circular incision by circular arc counterweight 11.
In a preferred embodiment, the part that is arranged on the counterweight 11 on the exposed end face 18 of balance arbor wheel 10 can be equal to and is arranged on the circular arc design that band drives the relative part of the counterweight 11 in the plane, this part may have wideer design, particularly so that cooperate drive unit 4.Yet the both sides of counterweight 11 are provided with the design of different circular arc so that see that the opposite side that is greater than or less than counterweight 11 also is feasible on the circumferencial direction of a side of counterweight.Circumference potted element 17 can be to be matched with this design so that produce common excircle (whole circle).
Yet essence of the present invention is to regulate the outer diameter of the member that therefore counterweight 11 promptly form with the outer diameter of circumference potted element 17, so that the peripheral velocity of the member that forms is different from the running speed of cingulum 4.Because balance arbor wheel 10 is driven by auxiliary wheel or gear 9, both and counterweight 11 have unequal angular velocity with circumference potted element 17.Peripheral velocity can also be called band net spee (belt web speed).
Claims (3)
1. the drive system especially for explosive motor (1), described drive system (1) comprises actuation gear (2) and at least one driven gear (3) that links together by drive unit (4), and be arranged on auxiliary wheel (9) on the same axle with driven gear (3), and balance arbor wheel (10) and be arranged on counterweight (11) on the same trunnion shaft with balance arbor wheel (10), auxiliary wheel (9) is connected to balance arbor wheel (10) so that by auxiliary wheel (9) driven equilibrium arbor wheel (10), the counterweight (11) that is arranged in the band driving plane (5) engages with drive unit (4)
Wherein counterweight (11) and circumference potted element (17) design together has outer diameter so that the peripheral velocity of counterweight (11) and circumference potted element (17) is different from the running speed of drive unit (4).
2. drive system as claimed in claim 1, it is characterized in that, balance arbor wheel (10) supports with respect to auxiliary wheel (9), and the diameter of counterweight (11) and circumference potted element (17) makes the peripheral velocity of counterweight (11) and circumference potted element (17) greater than the running speed of drive unit (4).
3. drive system as claimed in claim 1, it is characterized in that, balance arbor wheel (10) supports with respect to auxiliary wheel (9), and the diameter of counterweight (11) and circumference potted element (17) makes the peripheral velocity of counterweight (11) and circumference potted element (17) less than the running speed of drive unit (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810042643 DE102008042643B4 (en) | 2008-10-07 | 2008-10-07 | belt drive |
| DE102008042643.1 | 2008-10-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101713450A true CN101713450A (en) | 2010-05-26 |
| CN101713450B CN101713450B (en) | 2014-02-26 |
Family
ID=41820866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910205207.1A Expired - Fee Related CN101713450B (en) | 2008-10-07 | 2009-09-30 | Belt drive |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101713450B (en) |
| DE (1) | DE102008042643B4 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3548673A (en) * | 1969-06-17 | 1970-12-22 | Us Army | Antibacklash gear train |
| US4556026A (en) * | 1983-08-31 | 1985-12-03 | Mazda Motor Corporation | Multiple-displacement engine |
| CN1174948A (en) * | 1996-05-20 | 1998-03-04 | 奥迪股份公司 | Device for balancing inertia moment of reciprocative piston in internal combustion engine |
| US6655340B2 (en) * | 2001-10-01 | 2003-12-02 | General Motors Corporation | Engine with balancer for second order pitching couple |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008011673B4 (en) * | 2008-02-28 | 2010-07-22 | Ford Global Technologies, LLC, Dearborn | Traction drive for driving an accessory of an internal combustion engine and use of such a traction mechanism drive |
-
2008
- 2008-10-07 DE DE200810042643 patent/DE102008042643B4/en not_active Expired - Fee Related
-
2009
- 2009-09-30 CN CN200910205207.1A patent/CN101713450B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3548673A (en) * | 1969-06-17 | 1970-12-22 | Us Army | Antibacklash gear train |
| US4556026A (en) * | 1983-08-31 | 1985-12-03 | Mazda Motor Corporation | Multiple-displacement engine |
| CN1174948A (en) * | 1996-05-20 | 1998-03-04 | 奥迪股份公司 | Device for balancing inertia moment of reciprocative piston in internal combustion engine |
| US6655340B2 (en) * | 2001-10-01 | 2003-12-02 | General Motors Corporation | Engine with balancer for second order pitching couple |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101713450B (en) | 2014-02-26 |
| DE102008042643B4 (en) | 2013-01-17 |
| DE102008042643A1 (en) | 2010-04-15 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20200930 |