CN207961432U - A kind of compound tensioning wheel - Google Patents
A kind of compound tensioning wheel Download PDFInfo
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- CN207961432U CN207961432U CN201721878693.XU CN201721878693U CN207961432U CN 207961432 U CN207961432 U CN 207961432U CN 201721878693 U CN201721878693 U CN 201721878693U CN 207961432 U CN207961432 U CN 207961432U
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- belt pulley
- support arm
- spring base
- belt
- spring
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Abstract
A kind of compound tensioning wheel, including bearing, lid, it is provided with spring between the bearing and lid, one end of the first support arm is fixedly connected with spring base, the other end of the first support arm is provided with the first belt pulley seat, the first belt pulley is fixedly connected on first belt pulley seat, first belt pulley passes through bearing and the first belt pulley seat rotatable engagement；One end of the second support arm is fixedly connected with spring base, and the other end of the second support arm is provided with the second belt pulley seat, and the second belt pulley is fixedly connected on second belt pulley seat, and second belt pulley passes through bearing and the second belt pulley seat rotatable engagement；The spring is provided in spring base, and the spring base and lid rotatable engagement, the spring base along the circumferential direction limit cooperation by spring and lid.The design not only increases tensioning wheel and adjusts the adjustment length to belt, reduces adjustment angle, and effectively improves belt train traveling comfort and level of NVH.
Description
Technical field
The utility model is related to a kind of dual pulley tensioning wheel more particularly to a kind of compound tensioning wheels, and it is particularly applicable to increase
The adjustment length range of big tensioning wheel, the adaptability and stability for improving tensioning wheel.
Background technology
Effect of the tensioning wheel in motor head accessory drive train be：Stable tension is provided, ensures the biography of attachment
Dynamic power；Each attachment installation site deviation and belt aging elongation are compensated, ensures the service life of belt.
Tensioning wheel plays the role of tightening belt by the certain angle of rotating arm.Because load becomes in its operational process
Change, Belt Length variation, spring, which is applied to support arm, makes belt wheel assembly keep impaction state to belt.To meet belt life week
Within the scope of phase（Belt aging extends）Tensioning wheel keeps impaction state, tensioning wheel that certain operating angle is needed to reach belt
This regulated quantity.When operating angle range is big, spring windup-degree is big, and the torque range released is also bigger, is unfavorable for whole
The reliability of a train.It is inadequate to Belt Length regulated quantity when operating angle is small, the service life of belt is influenced, especially
The arrangement form of one driving wheel, driven wheel, and big operating angle can not be designed by spacial influence tensioning wheel.Therefore
The prior art has the following disadvantages：1. it is small to be limited tensioning wheel operating angle by space, inadequate to belt regulated quantity.2. tensioning wheel work
It is big to make angular range, torque output variation is big.
China Patent Publication No. is CN202690922U, and publication date is that the utility model patent on January 23rd, 2013 discloses
The utility model is related to a kind of tensioning wheels in technical field of mechanical transmission, include the support plate of belt pulley and connection belt pulley,
It is equipped with bearing in the belt pulley, baffle ring is equipped between the bearing and support plate, belt pulley end face is fixed with dust-proof by axle bolt
Lid, the dustproof cover edge are foldable outwardly and are overlapped with pulley rim, and the support plate is equipped with spring supporting set and central shaft
Set and the two concentric, the spring supporting set is interior to be equipped with spring, and washer, the end of the support plate are equipped between the spring and support plate
Face is equipped with panel, and panel to spring supporting inner room is equipped with wearing plate, disk spring successively.Although the utility model can effectively open
Tight belt, but its there are still following defects：
1, the tensioning wheel operating angle of the utility model is smaller, causes it smaller to the regulated quantity of belt, when belt aging
After growth, tensioning wheel weakens the control of belt, causes belt train transmission vibration to increase, reduces the reliable of belt train
Property.
2, the tensioning wheel operating angle range in the utility model is big, and the angle of tensioning wheel is caused frequently to become in its stress
Change, reduces the stability of belt train.
Invention content
The purpose of the utility model is to overcome the low problems of reliability existing in the prior art, provide a kind of reliability
High, damping noise reduction compound tensioning wheel.
In order to achieve the above object, the technical solution of the utility model is：
A kind of compound tensioning wheel, including bearing, lid, spring is provided between the bearing and lid；
The bearing includes spring base, first support arm and second support arm, and one end and the spring base of the first support arm are fixed
Connection, the other end of the first support arm are provided with the first belt pulley seat, first are fixedly connected on first belt pulley seat
Belt pulley, first belt pulley pass through bearing and the first belt pulley seat rotatable engagement；
One end of the second support arm is fixedly connected with spring base, and the other end of the second support arm is provided with the second belt
Wheel seat is fixedly connected with the second belt pulley on second belt pulley seat, and second belt pulley passes through bearing and the second belt
Wheel seat rotatable engagement；
The spring is provided in spring base, and the spring base and lid rotatable engagement, the spring base pass through spring
Cooperation is along the circumferential direction limited with lid.
Angle a between the first support arm and second support arm is the first belt pulley seat central axes, spring base central axes institute
Angle between plane where plane and spring base central axes, the second belt pulley seat central axes；
The angle of angle a between the first support arm and second support arm is 45 degree of -135 degree.
First belt pulley is identical as the mounting height of the second belt pulley.
Difference of first belt pulley seat central axes to the minimum range and the first pulley radius of spring base outer circumference surface
More than or equal to 20 millimeters；
Difference of second belt pulley seat central axes to the minimum range and the second pulley radius of spring base outer circumference surface
More than or equal to 20 millimeters.
The distance of first belt pulley seat central axes to spring base central axes is in spring base central axes to the second belt pulley seat
0.5 times -2 times of the distance of axis.
Minimum range between the outer circumference surface of first belt pulley 4 and the outer circumference surface of the second belt pulley 5 is more than etc.
In 30 millimeters, first belt pulley and the second belt pulley are located at the both sides of belt to be tensioned.
The equal length of the first support arm and second support arm.
Compared with prior art, the beneficial effects of the utility model are：
1, two belt pulleys are designed on a tensioning wheel in a kind of compound tensioning wheel of the utility model, increase tensioning
The adjustment length of wheel, and rotation angle of the torque of the tensioning wheel output depending on tensioning wheel spring, in the skin for being tensioned same length
With when the design tensioning wheel spring rotation angle smaller, therefore within the scope of the entire life cycle of belt tensioning wheel export
Moment difference become smaller, effectively increase entire belt train traveling comfort, improve the reliability and NVH of belt train
It is horizontal.Therefore, the tensioning wheel adjustment of the design is longer to the adjustment length of belt, adjusts the angle smaller, effectively improves belt pulley
It is traveling comfort and level of NVH.
2, the length of the support arm in a kind of compound tensioning wheel of the utility model and the angle of arm room can be according to actual fortune
It is adjusted with situation, expands the scope of application of the design tensioning wheel, improve the specific aim that tensioning wheel is tensioned different trains.Cause
This, the design is applied widely, and tension effects are good, train stability is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of bearing in Fig. 1.
Fig. 3 is the sectional view of bearing in Fig. 1.
In figure：Bearing 1, spring abutment 11, first support arm 12, second support arm 13, the first belt pulley seat 14, the second belt pulley seat
15, lid 2, spring 3, the first belt pulley 4, the second belt pulley 5.
Specific implementation mode
The utility model is described in further detail below in conjunction with description of the drawings and specific implementation mode.
Referring to Fig. 1 to Fig. 3, a kind of compound tensioning wheel, including bearing 1, lid 2, it is arranged between the bearing 1 and lid 2
There is spring 3,
The bearing 1 includes spring base 11, first support arm 12 and second support arm 13, one end of the first support arm 12 and bullet
Spring abutment 11 is fixedly connected, and the other end of the first support arm 12 is provided with the first belt pulley seat 14, first belt pulley seat 14
On be fixedly connected with the first belt pulley 4, first belt pulley 4 passes through 14 rotatable engagement of bearing and the first belt pulley seat；
One end of the second support arm 13 is fixedly connected with spring base 11, and the other end of the second support arm 13 is provided with
Two belt pulley seats 15 are fixedly connected with the second belt pulley 5 on second belt pulley seat 15, and second belt pulley 5 passes through axis
It holds and 15 rotatable engagement of the second belt pulley seat；
The spring 3 is provided in spring base 11, the spring base 11 and 2 rotatable engagement of lid, the spring base 11
Cooperation is along the circumferential direction limited by spring 3 and lid 2.
Angle a between the first support arm 12 and second support arm 13 is 14 central axes of the first belt pulley seat, spring base 11
Angle between plane where plane where central axes and 11 central axes of spring base, 15 central axes of the second belt pulley seat；
The angle of angle a between the first support arm 12 and second support arm 13 is 45 degree of -135 degree.
First belt pulley 4 is identical as the mounting height of the second belt pulley 5.
Minimum range and first belt pulley 4 radius of first belt pulley seat, 14 central axes to 11 outer circumference surface of spring base
Difference be more than or equal to 20 millimeters；
Minimum range and second belt pulley 5 radius of second belt pulley seat, 15 central axes to 11 outer circumference surface of spring base
Difference be more than or equal to 20 millimeters.
The distance of first belt pulley seat, 14 central axes to 11 central axes of spring base is 11 central axes of spring base to the second belt
0.5 times -2 times of the distance of 15 central axes of wheel seat.
Minimum range between the outer circumference surface of first belt pulley 4 and the outer circumference surface of the second belt pulley 5 is more than etc.
In 30 millimeters, first belt pulley, 4 and second belt pulley 5 is located at the both sides of belt to be tensioned.
The equal length of the first support arm 12 and second support arm 13.
The principles of the present invention are described as follows：
Referring to Fig. 1, in the train of a simplest driving wheel and a driven wheel, 1274 millimeters of raw hide strip length,
Adjustment length of the tensioning wheel in belt belt service life need to be more than Belt Length 1% with belt tolerance and 18 millimeters；
If be tensioned using traditional single belt pulley tensioning wheel, due to being limited by space, tensioning wheel is made to work
Angle is only 10 °, and the variable quantity that tensioning wheel adjusts Belt Length is 11.3 millimeters, is less than 18 millimeters.It can be seen that traditional list
A belt pulley tensioning wheel cannot be satisfied the adjusting requirement to Belt Length within the belt life period, and shorten belt uses the longevity
Life.
And the compound tensioning wheel of the design is utilized, the equal length of first support arm 12 and second support arm 13 is also equal to traditional
The arm length of single belt pulley tensioning wheel, the operating angle with sample design tensioning wheel are 10 °, and tensioning wheel adjusts Belt Length
Variable quantity be 21 millimeters, disclosure satisfy that the requirement of the adjusting in the belt life period to Belt Length, extend making for belt
Use the service life.
The diameter of first belt pulley, 4 and second belt pulley 5 can first belt pulley and the second belt pulley it is straight
Diameter is typically chosen equal-sized belt pulley, the generally belt pulley of 74 millimeters of diameter.Diameter pulley is small, and rotating speed will increase
Height is unfavorable for bearing reliability；Diameter pulley is big, occupies greater room, is unfavorable for train arrangement.
First support arm 12 with the Design of length principle of second support arm 13 is that belt is not contacted with fixed component, while first
Angle between arm 12 and second support arm 13 minimizes to increase the belt regulated quantity of tensioning wheel.
NVH refers to Noise (noise), Vibration (vibration) and Harshness (sound vibration roughness), due to above three
Person is appearance simultaneously and interwoveness in the mechanical oscillation such as automobile, therefore often puts them on and studied together.
Embodiment 1：
A kind of compound tensioning wheel, including bearing 1, lid 2, are provided with spring 3 between the bearing 1 and lid 2, described
Bearing 1 includes spring base 11, first support arm 12 and second support arm 13, and one end of the first support arm 12 is fixed with spring base 11 to be connected
It connects, the other end of the first support arm 12 is provided with the first belt pulley seat 14, is fixedly connected on first belt pulley seat 14
First belt pulley 4, first belt pulley 4 pass through 14 rotatable engagement of bearing and the first belt pulley seat；The second support arm 13
One end is fixedly connected with spring base 11, and the other end of the second support arm 13 is provided with the second belt pulley seat 15, second skin
The second belt pulley 5 is fixedly connected on band wheel seat 15, second belt pulley 5 is matched by bearing and the rotation of the second belt pulley seat 15
It closes；The spring 3 is provided in spring base 11, and the spring base 11 and 2 rotatable engagement of lid, the spring base 11 pass through bullet
Spring 3 along the circumferential direction limits cooperation with lid 2；Angle a between the first support arm 12 and second support arm 13 is the first belt
Where plane where 14 central axes of wheel seat, 11 central axes of spring base and 11 central axes of spring base, 15 central axes of the second belt pulley seat
Angle between plane；The angle of angle a between the first support arm 12 and second support arm 13 is 45 degree of -135 degree；Described
One belt pulley 4 is identical as the mounting height of the second belt pulley 5.
Embodiment 2：
Embodiment 2 is substantially the same manner as Example 1, the difference is that：
Minimum range and first belt pulley 4 radius of first belt pulley seat, 14 central axes to 11 outer circumference surface of spring base
Difference be more than or equal to 20 millimeters；Minimum range and second of second belt pulley seat, 15 central axes to 11 outer circumference surface of spring base
The difference of 5 radius of belt pulley is more than or equal to 20 millimeters；The distance of first belt pulley seat, 14 central axes to 11 central axes of spring base is bullet
0.5 times -2 times of distance to 15 central axes of the second belt pulley seat of 11 central axes of spring abutment；The outer circumference surface of first belt pulley 4
Minimum range between the outer circumference surface of the second belt pulley 5 is more than or equal to 30 millimeters, first belt pulley, 4 and second belt
Wheel 5 is located at the both sides of belt to be tensioned.
Embodiment 3：
Embodiment 3 is substantially the same manner as Example 1, the difference is that：
Minimum range and first belt pulley 4 radius of first belt pulley seat, 14 central axes to 11 outer circumference surface of spring base
Difference be more than or equal to 20 millimeters；Minimum range and second of second belt pulley seat, 15 central axes to 11 outer circumference surface of spring base
The difference of 5 radius of belt pulley is more than or equal to 20 millimeters；The equal length of the first support arm 12 and second support arm 13.
Claims (7)
1. a kind of compound tensioning wheel, including bearing（1）, lid（2）, the bearing（1）With lid（2）Between be provided with spring
（3）, it is characterised in that：
The bearing（1）Including spring base（11）, first support arm（12）And second support arm（13）, the first support arm（12）One
End and spring base（11）It is fixedly connected, the first support arm（12）The other end be provided with the first belt pulley seat（14）, described
One belt pulley seat（14）On be fixedly connected with the first belt pulley（4）, first belt pulley（4）Pass through bearing and the first belt pulley
Seat（14）Rotatable engagement；
The second support arm（13）One end and spring base（11）It is fixedly connected, the second support arm（13）The other end be provided with
Second belt pulley seat（15）, second belt pulley seat（15）On be fixedly connected with the second belt pulley（5）, second belt pulley
（5）Pass through bearing and the second belt pulley seat（15）Rotatable engagement；
The spring（3）It is provided in spring base（11）It is interior, the spring base（11）With lid（2）Rotatable engagement, the spring
Seat（11）Pass through spring（3）With lid（2）Along the circumferential direction limit cooperation.
2. a kind of compound tensioning wheel according to claim 1, it is characterised in that：
The first support arm（12）With second support arm（13）Between angle a be the first belt pulley seat（14）Central axes, spring base
（11）Plane and spring base where central axes（11）Central axes, the second belt pulley seat（15）Folder between plane where central axes
Angle；
The first support arm（12）With second support arm（13）Between angle a angle be 45 degree -135 spend.
3. a kind of compound tensioning wheel according to claim 1 or 2, it is characterised in that：
First belt pulley（4）With the second belt pulley（5）Mounting height it is identical.
4. a kind of compound tensioning wheel according to claim 3, it is characterised in that：
First belt pulley seat（14）Central axes are to spring base（11）The minimum range of outer circumference surface and the first belt pulley（4）Half
The difference of diameter is more than or equal to 20 millimeters；
Second belt pulley seat（15）Central axes are to spring base（11）The minimum range of outer circumference surface and the second belt pulley（5）Half
The difference of diameter is more than or equal to 20 millimeters.
5. a kind of compound tensioning wheel according to claim 4, it is characterised in that：
First belt pulley seat（14）Central axes are to spring base（11）The distance of central axes is spring base（11）Central axes are to the second skin
Band wheel seat（15）0.5 times -2 times of the distance of central axes.
6. a kind of compound tensioning wheel according to claim 5, it is characterised in that：
First belt pulley（4）Outer circumference surface and the second belt pulley（5）Outer circumference surface between minimum range be more than etc.
In 30 millimeters, first belt pulley（4）With the second belt pulley（5）It is located at the both sides of belt to be tensioned.
7. a kind of compound tensioning wheel according to claim 4, it is characterised in that：
The first support arm（12）With second support arm（13）Equal length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721878693.XU CN207961432U (en) | 2017-12-28 | 2017-12-28 | A kind of compound tensioning wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721878693.XU CN207961432U (en) | 2017-12-28 | 2017-12-28 | A kind of compound tensioning wheel |
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| Publication Number | Publication Date |
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| CN207961432U true CN207961432U (en) | 2018-10-12 |
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| CN201721878693.XU Active CN207961432U (en) | 2017-12-28 | 2017-12-28 | A kind of compound tensioning wheel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965554A (en) * | 2017-12-28 | 2018-04-27 | 东风商用车有限公司 | A kind of compound tensioning wheel |
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- 2017-12-28 CN CN201721878693.XU patent/CN207961432U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965554A (en) * | 2017-12-28 | 2018-04-27 | 东风商用车有限公司 | A kind of compound tensioning wheel |
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