CN201206609Y - Crankshaft torsion shock-absorber for automobile engine - Google Patents
Crankshaft torsion shock-absorber for automobile engine Download PDFInfo
- Publication number
- CN201206609Y CN201206609Y CNU2008200221945U CN200820022194U CN201206609Y CN 201206609 Y CN201206609 Y CN 201206609Y CN U2008200221945 U CNU2008200221945 U CN U2008200221945U CN 200820022194 U CN200820022194 U CN 200820022194U CN 201206609 Y CN201206609 Y CN 201206609Y
- Authority
- CN
- China
- Prior art keywords
- belt pulley
- engine crankshaft
- wheel hub
- automobile engine
- hub
- 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
Links
- 239000006096 absorbing agent Substances 0.000 title abstract description 6
- 230000035939 shock Effects 0.000 abstract 3
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Abstract
The utility model discloses an engine crankshaft torsion shock absorber which comprises a hub (3), a rubber ring (4) and a belt pulley (5). The shock absorber is characterized in that a ring-shaped protrusion (9) is formed on the rubber ring (4), a cavity (8) and a reinforcing rib (7) are formed at one end of the hub (3), and the belt pulley (5) adopts a double-row structure (6) in which the addendum circles of the two rows of gear teeth are the same in diameter. The protrusion and the reinforcing rib increase the contact areas between the hub and the belt pulley and between the hub and the rubber ring and increase the strength of the hub, so that the engine crankshaft shock absorber can greatly improve the torsion property of the automobile engine crankshaft, reduce the vibration of the crankshaft and overcome the problems caused by the crankshaft torsion, such as the decrease in rigidity and strength of the engine crankshaft, the aggravation of eccentric wear of the cylinder due to the wear damage to the timing gear or synchronous belt, and the like.
Description
Technical field
The utility model relates to the engine crankshaft transmission device, the torsion vibration absorber in particularly a kind of engine crankshaft transmission device.
Background technique
Bent axle in the motor car engine is an a kind of torsional elasticity system, itself has certain natural frequency of vibration, when engine operation, the size and Orientation that acts on the power on the bent axle all is periodically variable, bent axle can be because of the swing of the bigger flywheel of rotary inertia, and the generation torsional vibration, when energizing frequency becomes multiple to concern with the natural frequency of vibration of bent axle, the torsional vibration of bent axle just aggravates because of resonance takes place, and causes strength of crankshaft impaired even fracture, timing gear or a series of problems such as toothed belt wearing and tearing aggravation and cylinder eccentric wear thereof.
Summary of the invention
The purpose of this utility model is exactly for the defective that prior art exists, a kind of automobile engine crankshaft twist vibration damper that can weaken crankshaft vibration that provides are provided.
For the utility model that achieves the above object adopts following technological scheme:
The automobile engine crankshaft twist vibration damper, comprise timing gear that are connected in crankshaft end and the wheel hub that connects thereon, connect rubber ring and the belt pulley that matches on the wheel hub successively, it is characterized in that: rubber ring is provided with at least one annular protrusion, is respectively equipped with the shape that adapts and cooperate with annular protrusion on wheel hub and the belt pulley.According to above-mentioned basic technical scheme, can be provided with cavity at an end of wheel hub, be provided with one group of stiffening rib in the cavity, belt pulley adopts two-row structure, and the top circle of the row of two in the belt pulley gear teeth adopts identical diameter.
The convex annular that is provided with in the rubber ring cooperates with wheel hub and belt pulley, can increase their area of contact, improves damping effect.When using two row's belts on the belt pulley simultaneously, for alleviating the weight of wheel hub, go back simultaneously otherwise the crankshaft front end length of increase motor, end at wheel hub can be provided with cavity, be provided with one group of stiffening rib in the cavity, be used for strengthening the rigidity of wheel hub, for ease of the processing of belt pulley and the layout of solution engine accessory power rating, belt pulley adopts double belt grooves, and the top circle of the belt pulley both sides gear teeth adopts identical diameter.
Advantage of the present utility model is: the torsional vibration characteristic that improves this motor has been played positive effect, it can make the maximum stress of bent axle reduce about 1/3, consumed the torsional vibration energy of bent axle, whole crankshaft torsion amplitude is reduced, the bent axle resonance speed is shifted to higher rotating speed, avoided in normal revolution, occurring resonance phenomenon, weakened the resonance of automobile engine crankshaft in a word greatly, overcome and produce a series of problems such as the impaired even fracture of intensity, timing gear or toothed belt wearing and tearing aggravation cylinder eccentric wear because of crankshaft torsional vibrations.
Description of drawings:
Fig. 1 is a sectional view of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, the motor car engine torsion vibration absorber is installed on the timing gear 2 of bent axle 1 front end.Described vibration damper is made up of wheel hub 3, rubber ring 4, belt pulley 5, and wheel hub 3 is fixed on the timing gear 2, and timing gear are fixed on the front end of bent axle 1 again, and wheel hub 3 outer hoops have rubber ring 4, and belt pulley 5 binds round on wheel hub 3 across rubber ring 4.The periphery of wheel hub is provided with the projection 9 of twice circular arc, is respectively equipped with on wheel hub 3 and the belt pulley 5 and 9 shapes that adapt of convex annular (groove or projection).Projection 9 direction can be to the axle center, also can be outside, and the quantity of projection can the 1-5 road, generally in the 2-3 road.
Right-hand member at wheel hub 3 is provided with cavity 8, is provided with one group of stiffening rib 7 in the cavity 8, is used for strengthening the rigidity of wheel hub, and alleviates the weight of wheel hub, does not increase the crankshaft front end length of motor simultaneously.Belt pulley 5 adopts two-row structure 6, and the top circle of the row of two in the belt pulley gear teeth adopts identical diameter.So that the layout of the processing of belt pulley and solution engine accessory power rating.
When engine operation, bent axle 1 vibration that can twist, in bent axle 1 nose angle amplitude maximum, for reducing vibration, bent axle 1 front end is equipped with belt pulley 5, belt pulley 5 is equivalent to inertia disk greatly because of rotary inertia, its rotating speed is more even with respect to bent axle 1 and wheel hub 3, bent axle 1 is when working stroke, its suffered piston rod active force and rotating speed is very fast, driving belt pulley 5 by wheel hub 3 pulling rubber rings 4 rotates, when remaining stroke,, bent axle 1 rotates because of driving piston rod, rotating speed is lower, and then belt pulley 5 drives bent axle 1 rotation because of rotating speed spurs rubber ring 4 soon than bent axle 1, thereby between belt pulley 5 and wheel hub 3 relative angular vibrations has just been arranged, produced the torsional deflection of positive and negative direction alternate in the rubber ring 4, thereby the interior molecules friction that produces has consumed torsional vibration energy, and the torsional amplitudes of whole bent axle is reduced, and the bent axle resonance speed is shifted to higher rotating speed and avoids occurring resonance in normal revolution.
Claims (5)
1, automobile engine crankshaft twist vibration damper, comprise the timing gear (2) and the company's wheel hub (3) thereon that are connected in bent axle (1) end, connect rubber ring (4) and the belt pulley (5) that matches on the wheel hub (3) successively, it is characterized in that: rubber ring (4) is provided with at least one annular protrusion (9), is respectively equipped with the shape that adapts and cooperate with annular protrusion (9) on wheel hub (3) and the belt pulley (5).
2, automobile engine crankshaft twist vibration damper as claimed in claim 1 is characterized in that: an end of wheel hub (3) is provided with cavity (8).
3, automobile engine crankshaft twist vibration damper as claimed in claim 2 is characterized in that: be provided with one group of stiffening rib (7) in the cavity (8) of wheel hub (3).
4, as claim 2 or 3 described automobile engine crankshaft twist vibration dampers, it is characterized in that: belt pulley (5) adopts two-row structure (6).
5, automobile engine crankshaft twist vibration damper as claimed in claim 4 is characterized in that: the top circle of the row of two in the belt pulley gear teeth adopts identical diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200221945U CN201206609Y (en) | 2008-05-09 | 2008-05-09 | Crankshaft torsion shock-absorber for automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200221945U CN201206609Y (en) | 2008-05-09 | 2008-05-09 | Crankshaft torsion shock-absorber for automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206609Y true CN201206609Y (en) | 2009-03-11 |
Family
ID=40465672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200221945U Expired - Fee Related CN201206609Y (en) | 2008-05-09 | 2008-05-09 | Crankshaft torsion shock-absorber for automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206609Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886685A (en) * | 2010-07-19 | 2010-11-17 | 奇瑞汽车股份有限公司 | Vibration damper assembly |
| CN102748130A (en) * | 2012-06-13 | 2012-10-24 | 东风朝阳朝柴动力有限公司 | Multifunctional accessory transmission output device of diesel engine |
| CN104612828A (en) * | 2015-02-12 | 2015-05-13 | 广西玉柴机器股份有限公司 | Hydraulic connector of crankshaft of engine |
-
2008
- 2008-05-09 CN CNU2008200221945U patent/CN201206609Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886685A (en) * | 2010-07-19 | 2010-11-17 | 奇瑞汽车股份有限公司 | Vibration damper assembly |
| CN102748130A (en) * | 2012-06-13 | 2012-10-24 | 东风朝阳朝柴动力有限公司 | Multifunctional accessory transmission output device of diesel engine |
| CN104612828A (en) * | 2015-02-12 | 2015-05-13 | 广西玉柴机器股份有限公司 | Hydraulic connector of crankshaft of engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20140509 |