CN201218309Y - Continuous belt-drive apparatus - Google Patents

Continuous belt-drive apparatus Download PDF

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Publication number
CN201218309Y
CN201218309Y CNU2006900000354U CN200690000035U CN201218309Y CN 201218309 Y CN201218309 Y CN 201218309Y CN U2006900000354 U CNU2006900000354 U CN U2006900000354U CN 200690000035 U CN200690000035 U CN 200690000035U CN 201218309 Y CN201218309 Y CN 201218309Y
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CN
China
Prior art keywords
draught wheel
transmission device
continuous band
band transmission
wheel
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Expired - Fee Related
Application number
CNU2006900000354U
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Chinese (zh)
Inventor
雷纳·普夫卢格
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Schaeffler Technologies AG and Co KG
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FAG Kugelfischer AG and Co OHG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • 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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H2035/003—Gearings comprising pulleys or toothed members of non-circular shape, e.g. elliptical gears
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The utility model relates to a continuous belt transmission device (1) which is provided with a winding piece (4), at least one driving drawer roller (2) and at least one driven drawer roller (3), wherein at least one of the drawer rollers (2, 3) is of a non-circular shape. The utility model puts forward that the vibration characteristic of the winding piece (4) can be particularly and profitably influenced through choosing the certain winding angle (alpha) and the constant contact length of the winding piece (4) on at least one of the non-circular-shaped drawer rollers (2, 3), and therefore, the vibration characteristic of the continuous belt transmission device (1) is influenced. Therefore, according to the adjustment to the winding angle (alpha) and the contact length of the winding piece (4) on at least one of the non-circular-shaped drawer rollers (2, 3), the winding angle and the contact length in any rotating position of the drawer rollers (2, 3) are almost constant.

Description

The continuous band transmission device
Technical field
The present invention relates to a kind of continuous band transmission device, have a twisting member, at least one initiative traction wheel and a passive draught wheel, wherein, the non-circular formation of at least one draught wheel.
Background technique
Particularly use belt or chain transmission on automobile, wherein the bent axle transmission opens and closes the camshaft of internal combustion engine intake valve or exhaust valve.
Belt or chain transmission occur vibrating owing to duration of work torque ripple or angular velocity and rotating speed change, and this vibration has increased the load of belt or chain transmission from its that aspect.Therefore this vibration causes the noise that can hear unfriendly in resonance region.Relevant therewith working life and the efficient thereof that has improved the continuous band transmission device produces the frictional force of negative influence.In addition, rate of fault rises and has reduced driving comfortability on the automobile for example.
Different measures is disclosed for effectively eliminating this problem.Known have at least one initiatively and/or the non-circular formation of passive draught wheel and/or eccentric support.By the imbalance that additional nonuniformity produces the continuous band transmission device, thus critical resonance region is transferred to a glitch-free scope (DE 195 20 508A1, DE 202 20 367U1) by this measure.
In addition, DE 195 20 508A1 disclose gear non-circular formation and/or eccentric support or draught wheel and belt, and particularly tooth belt is combined, and tooth belt utilizes different longitudinal elasticities to constitute from its that aspect.The document further proposes, and itself is known and be arranged on non-circular formation of Idle wheel and/or the eccentric support that continuous band transmission device idle running section upper spring loads with a kind of, can realize resonant transfer equally thus.
In addition, undocumented German patent application 10 2,004 025 936.4 proposes a kind of continuous band transmission device that has as the internal-combustion engine of belt or chain formation twisting member, and it is by the drive wheel or the follower guiding of bent axle and at least one camshaft of the auxiliary unit of the internal-combustion engine and/or the transmission of wanting.In this case, the non-circular or eccentric formation of at least one drive wheel or drive wheel or steering wheel and/or have at least two hitch rolls basically, wherein, these hitch rolls have a vibration damping equipment or two vibration damping equipments interconnect.
DE 202 20 367U1 propose in addition, the load torque or the vibration cause of fluctuation are eliminated on a continuous band transmission device thus by internal-combustion engine, it is the draught wheel that the continuous band transmission device has a non-circular section bar, wherein, non-circular section bar moves ahead and the position, angle of return phase constitutes like this with respect to the position, angle of second draught wheel and the degree of the non-circular section bar degree of eccentricity, make non-circular section bar apply the torque of a kind of opposite fluctuation and correction to second draught wheel, it reduces or eliminates basically the load torque of fluctuation from its that aspect.Therefore attempt position, angle by the non-circular draught wheel and the second circular draught wheel and the degree by the degree of eccentricity vibration damping is produced special influence.
In addition, US 4,865, and 577 disclose the non-circular chain transmission with non-circular sprocket wheel.For the fluctuation with the chain bending part drops to bottom line, propose basically sprocket wheel is provided with so each other, layman's point and inlet point that chain is corresponded to each other on two sprocket wheels are not on the common tangent line.
Utilize these disclosed measures can obtain undoubtedly to have advantage ground influence the operation of continuous band transmission device and efficient and to the definite resonant transfer of driving comfortability of automobile with this continuous band transmission device.However, these measures still bring other spendings to a certain extent simultaneously, particularly these measures for example with the combined situation of the belt of known so-called camshaft vibration damper itself and/or senior cord under.
Therefore industry is making great efforts to find other to have the solution of advantage, so that effectively and at low cost eliminate alleged vibrational excitation problem.
Summary of the invention
Therefore purpose of the present invention is, provide a kind of be used to reduce vibration on the continuous band transmission device, unlike the prior art, particularly can be simply and the solution that has advantage especially of low-cost realization.
The present invention is based on this understanding,, can particularly advantageously influence the twisting member and the therefore vibration characteristics of continuous band transmission device promptly by selecting definite winding angle α of twisting member on the draught wheel of at least one non-circular formation.
Therefore the present invention relates to a kind of continuous band transmission device, has a twisting member, at least one initiative traction wheel and a passive draught wheel, wherein, and the non-circular formation of at least one draught wheel.For realizing this purpose, winding angle α and contact length on the draught wheel of at least one non-circular formation are adjusted like this, make it all almost constant on any rotational position of draught wheel.
Determine that in view of the above best winding angle α can be according to condition
α＝360°/OZ
Measure especially easily, wherein, OZ is the sequence number of employed non-circular draught wheel or second, third, the 4th or the sequence number of n level draught wheel.
Have first of advantage according to the present invention and constitute, to partial draught wheel, promptly oval-shaped draught wheel adjustment winding angle α=180 °.
Constitute draught wheel according to second, wherein, adjust the multiple of winding angle α=120 ° or its integer with third level (triangle), but best winding angle α=120 °.
Have the draught wheel of a fourth stage (quadrangle) according to the 3rd mode of execution, wherein, adjust the multiple of winding angle α=90 ° or its integer, but best winding angle α=180 °.
The draught wheel of level V (pentagon) is adjusted the multiple of winding angle α=72 ° or its integer, but best winding angle α=144 °.
In contrast to this, the draught wheel of the 6th grade (hexagon) is adjusted the multiple of winding angle α=60 ° or its integer at last, but best winding angle α=120 °.
Special way is a kind of continuous band transmission device that bent axle is connected with the camshaft of three cylinder IC engines, what have advantage is draught wheel has α=120 ° or its integral multiple as the draught wheel of the third level (triangle) on camshaft winding angle, but best winding angle α=120 °, and the circular formation of the draught wheel of bent axle.
And for four-cylinder internal combustion engine, have advantage be, the draught wheel of camshaft has the multiple of winding angle α=90 ° or its integer as the draught wheel of the fourth stage (quadrangle), but best winding angle α=180 °, perhaps the draught wheel of bent axle constitutes as the draught wheel of the second level (ellipse), has winding angle α=180 °.
For five-cylinder internal combustion engine, the draught wheel of camshaft is for realizing according to effect of the present invention, have the multiple of winding angle α=72 ° or its integer as the draught wheel of level V (pentagon), but best winding angle α=144 ° of formations, and the draught wheel of bent axle is circular constitutes.
And for six-cylinder engine, the draught wheel of camshaft has the multiple of winding angle α=60 ° or its integer as the draught wheel of the 6th grade (hexagon), but best winding angle α=120 °, perhaps the draught wheel of bent axle constitutes as the draught wheel of the third level (triangle), multiple with winding angle α=120 ° or its integer, but best winding angle α=120 °.
The present invention is last further to be proposed, the winding angle α of continuous band transmission device or contact length particularly according to purpose can pass through the draught wheel that participated in really sizing than and/or by select its each other spacing and/or by adjusting as auxiliary members such as steering wheel, turning roll or hitch roll and/or guide rails.
Consider traditional continuous band transmission device, the major advantage of the solution of the continuous band transmission device that is proposed is that this device can be simply with realization at low cost and very effective aspect the minimizing vibration.In addition, it is combined with the known and top measure of having inquired in detail own that the measure on the continuous band transmission device that is proposed also can have advantage ground, so that further improve desired effects.
Description of drawings
The present invention is described in detail by embodiment shown in the drawings below.Wherein:
Fig. 1 illustrates a kind of continuous band transmission device of simple formation, has an initiative traction wheel and a driven draught wheel;
Fig. 2 illustrates the draught wheel (prior art) that a kind of traditional continuous band transmission device is at least one the non-circular formation on first rotational position;
Fig. 3 illustrates Fig. 2 draught wheel (prior art) that is on second rotational position;
Fig. 4 illustrates the draught wheel that is in a non-circular formation on first rotational position according to continuous band transmission device of the present invention; And
Fig. 5 illustrates Fig. 4 draught wheel that is on second rotational position.
Embodiment
The continuous band transmission device 1 that schematically illustrates among Fig. 1 has an initiative traction wheel 2 and a driven draught wheel 3 in the simplest formation that can imagine, they are twined by an endless twisting member 4 as the transmission of torque part.Both be suitable for chain as twisting member 4 and also be suitable for belt, preferably tooth belt.
If continuous band transmission device 1 for example is the continuous band transmission device of an internal-combustion engine that is not shown specifically, draught wheel 2 is connected with the inverted cam axle effect of internal-combustion engine with draught wheel 3 with the actuating cam axle of internal-combustion engine so.
As further finding out from Fig. 1, draught wheel 2 is equivalent to oval-shaped non-circular formation in known mode own mainly as partial draught wheel 2.As top and introduction, only this measure just can influence desired reduction vibration to a certain extent, method is the mechanical vibration excitation that was originally changed the continuous band transmission device 1 that causes by internal-combustion engine or its torque ripple or angular velocity and rotating speed, by the imbalance that comes from the continuous band transmission device 1 that at least one draught wheel 2 alleged non-circular formations produce, have the stack of advantage ground and reduce.But facts have proved that consequent vibration reduces still not enough and needs to improve.
Find now through research, by selecting winding angle α and the contact length of twisting member 4 at least one non-circular draught wheel 2 and/or 3, can particularly advantageously influence the vibration characteristics of twisting member 4 and therefore influence as the vibration characteristics of the continuous band transmission device 1 of system unit.
Fig. 2 and 3 illustrates the non-circular draught wheel 2 in the second level (ellipse) that a traditional continuous band transmission device 1 for example is connected with the effect of internal-combustion engine active bent axle respectively, utilize the twisting member 4 that twines draught wheel 2 to be on two typical rotational position, wherein, draught wheel 2 present clockwise direction rotations.
As being not difficult as seen from the figure, under rotation status shown in two kinds of draught wheel 2, adjust this winding angle α 1And α 2, make its difference that produces twisting member twine arc length degree or contact length, it causes the length fluctuation of twisting member 4 on the continuous band transmission device 1 idle running section 5 particularly again from their that aspects, and the tension force on its traction section 6 then remains unchanged.The reason that this fluctuation length change on the idle running section 5 is unfavorable vibration.
For eliminating this situation, according to the present invention winding angle α and the contact length of twisting member on the draught wheel 2 of at least one non-circular formation adjusted like this, make it all almost constant on any rotational position of draught wheel 2.Figure 4 and 5 are illustrated in of the present invention the setting and adopt the draught wheel 2 that same twisting member 4 twines to be on two typical rotational position.
Be winding angle α=180 determined of draught wheel 2 adjustment of the second level (ellipse) ° in view of the above, this winding angle causes all having the constant winding angle α with the constant contact length of twisting member on the one hand on any rotational position of draught wheel 2, and no matter is all to realize the constant as far as possible twisting member of tightening 4 in idle running section 5 or on traction section 6 on the other hand.Therefore unfavorable vibration on the twisting member 4 is avoided with having advantage.
But on the second level draught wheel 2 that the present invention is not confined to shown in the front and introduce in detail, but comprising in view of the above also having the the the 3rd, the 4th, the 5th, the 6th or the traction piece 2 and 3 of all non-circular moulding of n level, its mode of execution is here introduced no longer in detail.
In the framework of alleged research, for example concerning the known third level (triangle) draught wheel 2 itself, winding angle α=120 ° prove has advantage especially.In contrast to this, also can adjust the multiple of this winding angle α integer, in view of the above winding angle α=240 ° for example.But preferred winding angle α=120 ° is because efficient decreases during winding angle α=240 of being adjusted under this concrete condition °.
Concerning having the continuous band transmission device 1 of the fourth stage (quadrangle) draught wheel 2, prove the multiple that is suitable for winding angle α=90 ° or its integer, preferably winding angle α=180 °.
If use the draught wheel 2 of level V (pentagon), the multiple of winding angle α=72 ° or its integer so advantageously, preferably winding angle α=144 °.
On the draught wheel 2 of the 6th grade (hexagon), be suitable for the winding angle of α=60 ° or its integral multiple, but best winding angle α=120 °.
Be especially easily, therefore can be according to condition until the best winding angle α of the selected separately draught wheel 2 of n level
α＝360°/OZ
Measure, wherein, notion OZ is employed non-circular draught wheel 2 or second, third, the 4th or the sequence number of n level draught wheel 2.
The α of winding angle separately of twisting member and alleged contact length according to purpose pass through the draught wheel 2,3 that participated in really sizing than and/or by select its each other spacing and/or by not being shown specifically but known auxiliary member adjust as steering wheel, turning roll or guide rail.
In addition, except draught wheel 2, draught wheel 3 also can constitute according to above-mentioned condition, and it is specially adapted to continuous band transmission device 1 that bent axle is connected with the camshaft (not being shown specifically) of internal-combustion engine.
Though there is the possibility of calculating the imaginary best winding angle α that measures each selected draught wheel 2,3 according to above-mentioned condition, but the test relevant with the continuous band transmission device 1 of internal-combustion engine shows, for obtaining the big as far as possible effectiveness in vibration suppression of expectation, the draught wheel 2 of arbitrary number of level and 3 can have selectively combination mutually.
For example find in view of the above, for continuous band transmission device 1 optimal results that bent axle is connected with the camshaft of three cylinder IC engines be, the draught wheel 3 of camshaft has the multiple of winding angle α=120 ° or its integer as the draught wheel 3 of the third level (triangle), but best winding angle α=120 °, and the draught wheel 2 circular formations (not being shown specifically) of bent axle.
For the reason of simplifying, depend on internal combustion (IC) engine cylinder number (promptly four, five and six-cylinder engine) below, other have the formation scheme of advantage especially in the mode of tabulating continuous band transmission device 1 to be shown except such scheme.Numerical value in the round parentheses represents to calculate separately the winding angle α of mensuration in this regard, but not preferred.
Figure Y20069000003500131
Reference numeral
1 continuous belt-drive apparatus
The traction wheel of 2 traction wheels or bent axle
The traction wheel of 3 traction wheels or camshaft
4 traction pieces
5 idle running sections
6 traction sections
α, α 1, α 2Winding angle

Claims (17)

1. continuous band transmission device (1), have a twisting member (4), at least one initiative traction wheel (2) and at least one passive draught wheel (3), wherein, the non-circular formation of at least one draught wheel (2,3), it is characterized in that the winding angle (α) on the draught wheel of described at least one non-circular formation (2,3) can be according to condition
α＝360°/OZ
Measure, wherein, OZ is employed non-circular draught wheel (2,3) or second, third, the 4th or the sequence number of n level draught wheel (2,3).
2. by the described continuous band transmission device of claim 1, it is characterized in that, is that oval draught wheel (2,3) is adjusted winding angle α=180 ° to partial draught wheel.
3. by the described continuous band transmission device of claim 1, it is characterized in that, is the winding angle that triangle draught wheel (2,3) is adjusted α=120 ° or its integral multiple to the draught wheel of the third level.
4. by the described continuous band transmission device of claim 1, it is characterized in that, is the winding angle that tetragonal draught wheel (2,3) is adjusted α=90 ° or its integral multiple to the draught wheel of the fourth stage.
5. by the described continuous band transmission device of claim 4, it is characterized in that winding angle α=180 °.
6. by the described continuous band transmission device of claim 1, it is characterized in that, is the winding angle that pentagon draught wheel (2,3) is adjusted α=72 ° or its integral multiple to the draught wheel of level V.
7. by the described continuous band transmission device of claim 6, it is characterized in that winding angle α=144 °.
8. by the described continuous band transmission device of claim 1, it is characterized in that, is the winding angle that hexagon draught wheel (2,3) is adjusted α=60 ° or its integral multiple to the 6th grade draught wheel.
9. by the described continuous band transmission device of claim 8, it is characterized in that winding angle α=120 °.
10. by one of claim 1-9 described continuous band transmission device, this continuous band transmission device is connected a bent axle with the camshaft of three cylinder IC engines, it is characterized in that, the draught wheel of camshaft (3) is the winding angle that triangle draught wheel (3) has α=120 ° or its integral multiple as the draught wheel of the third level, and the draught wheel of bent axle (2) is circular constitutes.
11. by one of claim 1-9 described continuous band transmission device, this continuous band transmission device is connected a bent axle with the camshaft of four-cylinder internal combustion engine, it is characterized in that, the draught wheel of camshaft (3) is the winding angle that tetragonal draught wheel (3) has α=90 ° or its integral multiple as the draught wheel of the fourth stage, perhaps the draught wheel of bent axle (2) constitutes as the draught wheel (2) of the second level (ellipse), has winding angle α=180 °.
12. by the described continuous band transmission device of claim 11, this continuous band transmission device is connected a bent axle with the camshaft of four-cylinder internal combustion engine, it is characterized in that the draught wheel of camshaft (3) is the winding angle that tetragonal draught wheel (3) has α=180 ° as the draught wheel of the fourth stage.
13. by one of claim 1-9 described continuous band transmission device, this continuous band transmission device is connected a bent axle with the camshaft of five-cylinder internal combustion engine, it is characterized in that, the draught wheel of camshaft (3) is the winding angle that pentagon draught wheel (3) has α=72 ° or its integral multiple as the draught wheel of level V, and the draught wheel of bent axle (2) is circular constitutes.
14. by the described continuous band transmission device of claim 13, this continuous band transmission device is connected a bent axle with the camshaft of five-cylinder internal combustion engine, it is characterized in that the draught wheel of camshaft (3) is the winding angle that pentagon draught wheel (3) has α=144 ° as the draught wheel of level V.
15. by one of claim 1-9 described continuous band transmission device, this continuous band transmission device is connected a bent axle with the camshaft of six-cylinder engine, it is characterized in that, the draught wheel of camshaft (3) is the winding angle that hexagon draught wheel (3) has α=60 ° or its integral multiple as the 6th grade draught wheel, perhaps the draught wheel of bent axle (2) constitutes as the draught wheel (2) of the third level (triangle), has the winding angle of α=120 ° or its integral multiple.
16. by the described continuous band transmission device of claim 15, this continuous band transmission device is connected a bent axle with the camshaft of six-cylinder engine, it is characterized in that the draught wheel of camshaft (3) is the winding angle that hexagon draught wheel (3) has α=120 ° as the 6th grade draught wheel.
17. by the described continuous band transmission device of claim 1, it is characterized in that, winding angle (α) can pass through the draught wheel (2,3) that participated in really sizing than and/or by select its each other spacing and/or by adjusting as auxiliary members such as steering wheel, turning roll or guide rails.
CNU2006900000354U 2005-07-05 2006-06-16 Continuous belt-drive apparatus Expired - Fee Related CN201218309Y (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005031297.7 2005-07-05
DE200510031297 DE102005031297A1 (en) 2005-07-05 2005-07-05 Closed loop drive for e.g. three-cylinder-internal combustion engine, has looping unit, whose angle and contact length are adjusted at noncircular designed tensioning pulleys, so that they are nearly constant in rotation position of pulleys
US60/707,291 2005-08-11

Publications (1)

Publication Number Publication Date
CN201218309Y true CN201218309Y (en) 2009-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2006900000354U Expired - Fee Related CN201218309Y (en) 2005-07-05 2006-06-16 Continuous belt-drive apparatus

Country Status (3)

Country Link
CN (1) CN201218309Y (en)
BR (1) BRPI0612683A2 (en)
DE (1) DE102005031297A1 (en)

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DE102005031297A1 (en) 2007-01-25
BRPI0612683A2 (en) 2010-11-30

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