CN101713450B - Belt drive - Google Patents
Belt drive Download PDFInfo
- Publication number
- CN101713450B CN101713450B CN200910205207.1A CN200910205207A CN101713450B CN 101713450 B CN101713450 B CN 101713450B CN 200910205207 A CN200910205207 A CN 200910205207A CN 101713450 B CN101713450 B CN 101713450B
- Authority
- CN
- China
- Prior art keywords
- counterweight
- wheel
- circumference
- drive unit
- gear
- 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.)
- Expired - Fee Related
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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 linking together by least one drive unit, and be arranged on the auxiliary wheel (further wheel) on same axle with driven gear, and be arranged on the balance arbor wheel on trunnion shaft and be arranged on the counterweight on identical trunnion shaft, auxiliary wheel is connected to balance arbor wheel so that auxiliary wheel driven equilibrium arbor wheel, and counterweight and circumference potted element are arranged on band and drive in plane and drive unit permanent joint.
This drive system is known.For example, this drive system can be used for driving auxiliary unit, as oil pump, for example, by drive unit, the rotation of distributing to the actuation gear of bent axle is delivered to the driven gear of distributing to auxiliary unit, to drive described oil pump.It is also known that the main driving (bent axle/camshaft) of explosive motor is used to this drive system, yet wherein electric motor for example, is also like this by the system of drive unit (cingulum) driving 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 substantially.Tooth rotating band is advantageously used for the drive unit of motor vehicle and explosive motor substantially.Particularly, the use of cingulum has obvious increase, and cingulum also can be called Timing Belt, in a humid environment for comprising oily Timing Belt.In this drive system, be contained in the housing that comprises oiling agent or oil.For example, actuation gear is the gear of distributing to bent axle and rotating in oil groove.These " wet running " cingulums are for example not only for main driving but also for driving auxiliary unit as oil pump.The in the situation that of main driving, use relatively exquisite and expensive clamping system tensioning cingulum.For cost reason, for the current driving auxiliary unit that is not used in of those clamping systems of main driving." wet operation " cingulum drive and do not have suitable pre-tensioner, yet, there is quite impaired dynamic characteristic, for example from actuation gear to driven gear transfer of torque, cause 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 in location, deflect away from gear groove.This causes cingulum jump tooth and cause the control loss in drive system.
The rattling of the tooth on this external intermeshing gear causes less desirable running noise.Tooth rattling also has injurious effects to the service life of gear and drive system naturally.
Therefore tensioning suitably of drive unit, to guarantee the peace and quiet running of drive unit, and does not rock and serious wearing and tearing.Often use the clamping system of pre-tensioner drive unit for this reason.This comprises the finger wheel tension device (finger tensioning device) for example with conventional wheel, conventional wheel is rotatably supported on to rotate in the free end of finger wheel and the region between actuation gear and driven gear pushes down drive unit, to give the pre-tensioner of drive unit expectation.
Although be used for preventing from rocking and support is contacted with tension device by pre-tensioner towards this clamping system in a side (also referred to as thigh (strand)) of the drive unit of tension device, so that clamping system moves more smoothly, although but the tensioning that shortcoming is drive unit keeps drive unit tension, drive unit rocks in another burst of meeting away from tension device between actuation gear and driven gear.Rock and can cause drive unit to carry out unexpected contact with the counterweight of rotation on trunnion shaft.This can be by providing corresponding to the second tension device of the 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 cause comprises greater number, this increases weight, receptance and the cost of clamping system significantly.
For preventing the less desirable contact between drive unit and configuration, the i.e. not controlled joint of the counterweight in drive unit, 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 successfully in practice, because this expressly produces the controlled permanent joint of the wheel shape counterweight of trunnion shaft in drive unit.Yet, at this, perceive the less desirable rattling of gear.
Summary of the invention
Therefore target of the present invention is to provide the drive system of the above-mentioned type, prevents that gear rattling from avoiding above-mentioned shortcoming simultaneously although this drive system is of compact construction.
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 linking together by drive unit, and be arranged on the auxiliary wheel on same axle with driven gear, and balance arbor wheel and be arranged on the counterweight on same trunnion shaft with balance arbor wheel, auxiliary wheel is connected to balance arbor wheel so that by auxiliary wheel driven equilibrium arbor wheel, being arranged on band drives the counterweight in plane to engage with drive unit, counterweight and circumference potted element are designed with 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 a common plane that is called " band drives plane ".Auxiliary wheel forms the unit that is called " wheel drive " together with balance arbor wheel, and this wheel drive is placed in a common wheel drive plane.Wheel drive plane and band drive plane to be set parallel to each other.Before or after in background of the present invention, wheel drive plane can be arranged on band driving plane.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 by counterweight and circumference potted element and so guide driver.This is directed at and in drive unit, produces controlled joint and prevent drive unit less desirable movement in the horizontal.At this, be only necessary counterweight and circumference potted element to be positioned on trunnion shaft.Therefore the level and smooth guiding of drive unit realizes by extremely simple mode.In addition, 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, for example, reduced any backlash, and meshed gears keeps together and do not move.
Counterweight can with the integrated formation of balance arbor wheel.This has advantages of the receptance of reduction and low maintenance cost, because have particularly moving member of less parts.Yet counterweight is also likely formed on balance arbor wheel.In this case, counterweight can enter to be with and drive the mode of plane to stretch out 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 spaced from each other a distance along trunnion shaft in this case.It is feasible that counterweight is improved to circular arc embodiment, for example, likely design circumference potted element for corresponding applicable circular arc lid is to form the circular portion that can link together.The party's face ideally concept according to the present invention provide composite (for example plastics) and iron and steel combination, only have iron and steel or only have composite (for example plastics) to form counterweight and circumference potted element.
Counterweight and circumference potted element advantageously have rounded periphery.This guarantees that the band between counterweight and driven gear drives the uniform guiding of drive unit in plane also therefore guarantee the level and smooth running of drive unit and do not rock.
Counterweight has the function of enhancing together with 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 the depression in counterweight or otch in this case.In its size with in distributing, these depressions or otch are formed on wittingly by this way and in counterweight, produce predetermined imbalance.This means and be compared to conventional counterweight, the imbalance of this counterweight produces by asymmetrical profile, realizes imbalance and retains circular profile (counterweight and circumference potted element) simultaneously.
For the backlash of compensation between auxiliary wheel and balance arbor wheel, for example, auxiliary wheel advantageously supports against balance arbor wheel.
This support is unexpectedly different from counterweight and the peripheral velocity that is arranged on the circumference potted element in counterweight the running speed realization that is greater than or less than drive unit, so that balance arbor wheel supports with respect to auxiliary wheel.This can set by the diameter of counterweight and circumference potted element wittingly.At this, must consider the thickness of drive unit.The diameter of counterweight and circumference potted element must can not be excessive, in order to avoid be pressed on drive unit heavily.If diameter is too small on the other hand, drive unit will no longer be supported on the excircle of counterweight and circumference potted element, and this infringement is led and can cause rocking.Thereby regulate the diameter of counterweight and circumference potted element in the interact such mode of peripheral velocity that forms member and also can cause being different from the running speed of drive unit of the frictional engagement by with drive unit.
In addition, drive unit can be by particularly at least one auxiliary tension device tensioning on one of the drive unit with respect to balance arbor wheel location.
In following accompanying drawing explanation, other favourable improvement of the present invention are disclosed.
Accompanying drawing explanation
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 substantially for this reason.
Fig. 1 illustrates drive system 1.Drive system 1 comprises actuation gear 2 and the driven gear 3 linking together by drive unit 4.These form together and are placed on a band driving 5 in common band driving plane.
Shown in example embodiment in actuation gear 2 for distributing to the gear of the bent axle (not shown) of explosive motor, be after this called crankshaft gear 2.Driven gear 3, for to distribute to auxiliary unit as the gear of the oil pump of motor vehicle, is after this called oil pump gear 3.Drive unit 4 is set to cingulum 4, also referred to as Timing Belt.Cingulum 4 comprise have tooth 7 have flank 6 and with respect to the outside 8 that has flank 6.
The auxiliary wheel 9 that is connected to balance arbor wheel 10 is arranged on axle (not shown) coaxially with oil pump gear 3.Balance arbor wheel 10 is arranged on trunnion shaft 16 (not shown in Fig. 1, to see Fig. 2).Auxiliary wheel 9 forms and is placed on the wheel drive in wheel drive plane together with balance arbor wheel 10.Wheel drive plane parallel drives plane positioning in band, with respect to band, drives plane bias.
For any imbalance that 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 is at least positioned at band and drives in plane together with oil pump gear 3, crankshaft gear 2 and cingulum 4, and this is at labor more below.
In this example embodiment, in the view shown in Fig. 1, wheel drive plane positioning is before band drives plane.Yet, for not departing from the scope of the present invention, depend on the spatial placement of drive system 1 and any other member, after wheel drive plane can also be positioned at band driving plane.
In bearing region between counterweight 11 and oil pump gear 3, the outside 8 of the excircle 12 of counterweight 11 (together with circumference potted element 17) contact cingulum 4, so that the cingulum 4 in this region between counterweight 11 and oil pump gear 3 is by these members (band drives plane) guiding.As shown in the figure, cingulum 4 is shifted to or is controllably partial to driven gear 3 by counterweight 11.
For realizing the tensioning of cingulum 4, in this example embodiment, band driving 5 also has the tension device 13 of the reverse pulley 14 that can be routine.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 to can regulate reverse pulley 14 further to push down cingulum 4, to again increase the tensioning of cingulum 4.
The velocity ratio of the driving 5 of design band and gear drive is so that trunnion shaft 16 rotates with the angular velocity identical with bent axle but be contrary with crankshaft direction.Counterweight 11 designs together with circumference potted element 17 at its outer diameter so that the peripheral velocity of the member forming (counterweight 11 and circumference potted element 17; Fig. 2) be different from the running speed of cingulum 4, so that balance arbor wheel 10 supports with respect to auxiliary wheel 9.
Below describing by the working principle of the drive system 1 of example shown.
The oil pump gear 3 driving 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.Be positioned at together auxiliary wheel 9 or a gear 9 on axle with oil pump gear 3 and rotate with the angular velocity identical with oil pump gear 3, and driven equilibrium arbor wheel 10.Balance arbor wheel 10 is for example rotation in the counterclockwise direction therefore.Counterweight 11 is arranged on trunnion shaft 16 together with balance arbor wheel 10, therefore for example in the counterclockwise direction with the angular velocity rotation identical with balance arbor wheel 10.
In a preferred embodiment, regulate the girth of the member for example reduce the diameter of counterweight and circumference potted element 17 and therefore to form, so that poor for identical angular velocity (with respect to trunnion shaft 16 and balance arbor wheel 10) generation between the peripheral velocity (counterweight 11 is together with circumference potted element 17) of the member forming and the running speed of cingulum 4.Auxiliary wheel 9 and balance arbor wheel 10 relative to each other support by the friction producing between counterweight 11 and circumference potted element 17 and cingulum 4.This is for example used for eliminating or at least reducing the backlash between auxiliary wheel 9 and balance arbor wheel 10.This prevents or at least reduces any less desirable vibration or the rattling of gear mesh 9,10 and produce more level and smooth operation.
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 circular arc projection, this circular arc projection be arranged on the one hand in 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.A part for counterweight 11 is arranged on wheel drive plane before and relatively partly in band driving plane in this regard.Circumference potted element 17 is distributed to and is arranged on the part of the counterweight 11 in band driving plane to form member, and this member has the excircle of formation suitably.Design suitably circumference potted element 17 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 in the exposed end face 18 of balance arbor wheel 10 can be equal to and is arranged on the designed arc-shaped appearance that band drives the relative part of the counterweight 11 in plane, this part may have wider design, particularly to coordinate drive unit 4.Yet the both sides of counterweight 11 are provided with different designed arc-shaped appearances so that the opposite side that is greater than or less than counterweight 11 at the circumferencial direction of a side of counterweight is also feasible.Circumference potted element 17 can be to be matched with this design to produce common excircle (whole circle).
Yet essence of the present invention is can regulate the outer diameter of counterweight 11 together with circumference potted element 17 so the outer diameter of the member forming, so that the peripheral velocity of the member forming 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 identical angular velocity together with circumference potted element 17.Peripheral velocity can also be called band net spee (belt web speed).
Claims (4)
1. a drive system (1), described drive system (1) comprises actuation gear (2) and at least one driven gear (3) linking together by drive unit (4), and be arranged on the auxiliary wheel (9) on same axle with driven gear (3), and balance arbor wheel (10) and be arranged on the counterweight (11) on 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), being arranged on band drives the counterweight (11) in plane (5) to engage with drive unit (4)
Wherein counterweight (11) is identical with circumference potted element (17) 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 counterweight (11) makes counterweight (11) and the peripheral velocity of circumference potted element (17) be greater than the running speed of drive unit (4) with the diameter of circumference potted element (17).
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 counterweight (11) makes counterweight (11) and the peripheral velocity of circumference potted element (17) be less than the running speed of drive unit (4) with the diameter of circumference potted element (17).
4. drive system as claimed in claim 1, is characterized in that, described drive system (1) is for explosive motor.
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 CN101713450A (en) | 2010-05-26 |
| CN101713450B true 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 |
|---|---|
| CN101713450A (en) | 2010-05-26 |
| 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 | ||
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| 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 |