CN203656047U - Torsional vibration absorber - Google Patents
Torsional vibration absorber Download PDFInfo
- Publication number
- CN203656047U CN203656047U CN201420021535.2U CN201420021535U CN203656047U CN 203656047 U CN203656047 U CN 203656047U CN 201420021535 U CN201420021535 U CN 201420021535U CN 203656047 U CN203656047 U CN 203656047U
- Authority
- CN
- China
- Prior art keywords
- torsional vibration
- elastic ring
- hub
- crank shaft
- vibration absorber
- 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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Abstract
The utility model relates to a torsional vibration absorber. The torsional vibration absorber comprises a hub, an inertial body and an elastic ring; wherein the elastic ring which is arranged between the inertial body and the hub in a being compressed mode connects the inertial body and the hub. The torsional vibration absorber is characterized in that a ribbed belt groove is formed in an external wall surface of the inertial body and an external signal wheel which triggers blades is installed on the hub. According to the torsional vibration absorber, the elastic ring is served as a vibration damping element, so that torsional vibration of a crank shaft is attenuated due to molecular internal friction of the elastic ring when the crank shaft rotates in a high speed and generates twisting vibration, meanwhile torsional vibration characteristics of a shaft system are changed, torsional vibration amplitude of the crank shaft is reduced to be lower than 0.15 degree, the reliability and durability of the crank shaft are improved, and meanwhile the crank shaft rotating angle and the engine rotating speed can be confirmed through the external signal wheel.
Description
Technical field
The utility model relates to damper technique field, relates to or rather a kind of torshional vibration damper being arranged on automobile internal machine crankshaft.
Background technique
Torshional vibration damper has been widely used on internal-combustion engine, its wheel hub is arranged on the crankshaft front end of motor, coasting body is connected on wheel hub by elastomer, the torsional oscillation energy that when motor operation, axle system produces is converted into heat energy and cuts down by elastomeric internal damping, and the natural frequency of vibration and the vibration shape of the adjustable nodal axisn of the rotary inertia of coasting body and elastomeric flexibility system, thereby suppress the torsional oscillation earthquake intensity that axle is.The amplitude of the torsional vibration of engine shaft system, if be not weakened, will make component wear aggravation, noise increase, if resonated, also can cause, because of crankshaft breakdown, serious accident occurs.
The environmental protection of increasingly stringent and energy-conservation demand, the rotating speed of the bent axle of confirmation request motor and angle position, in order to the accurate control points fire time, but existing torshional vibration damper all can not meet this requirement.
Summary of the invention
The purpose of this utility model is, a kind of torshional vibration damper is provided, and can be accessory drive, cut down shafting torsional oscillation for motor provides axle, and can confirm rotating speed and the angle position of engine crankshaft.
To achieve these goals, the technical solution adopted in the utility model is: a kind of torshional vibration damper, comprise wheel hub, coasting body and elastic ring, elastic ring is arranged on by compression between coasting body and wheel hub and the two and couples together, it is characterized in that, the outer wall of coasting body is provided with multi-rib-belt groove, and the external signal wheel of band triggering blade is installed on wheel hub.
The utility model torshional vibration damper, using elastic ring as damping element, in the time that crankshaft high-speed rotation twists vibration, the interior frictional attenuation of elastic ring molecule the torsional oscillation of bent axle, also changed the torsional vibration characteristic of axle system simultaneously, crankshaft torsional vibrations amplitude is reduced to below 0.15 °, improved reliability and the durability of bent axle; Can take turns and confirm crank angle and engine speed by external signal simultaneously.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model torshional vibration damper.
Below in conjunction with accompanying drawing, the utility model is described in detail.
Embodiment
Referring to Fig. 1, torshional vibration damper comprises wheel hub 3, coasting body 1 and elastic ring 2.Elastic ring 2 is arranged between coasting body 1 and wheel hub 3 by compression, and the two couples together coasting body 1 and wheel hub 3, elastic ring 2 is rubber ring, in the time that crankshaft high-speed rotation twists vibration, the interior frictional attenuation of rubber molecule the torsional oscillation of bent axle, also the torsional vibration characteristic that has changed axle system, reduces to below 0.15 ° crankshaft torsional vibrations amplitude simultaneously, has improved reliability and the durability of bent axle.Coasting body 1 has corresponding rotary inertia, and its outer wall is provided with multi-rib-belt groove 11, and multi-rib-belt groove 11 is for coordinating with many wedges serpentine belt.The central position of wheel hub 3 is provided with center hole, and while assembling with engine crankshaft, both center lines are consistent.The wheel rim outer wall of wheel hub 3 is connected with elastic ring 2, and the external signal wheel 4 of band triggering blade is installed on wheel rim internal face, and the external signal wheel 4 that band triggers blade assembles and must locate by the requirement of engine piston top dead center.Hall type crankshaft position sensor comprises that band triggers the external signal wheel 4 of blade and is with the interior signal wheel that triggers blade, and interior signal wheel can be arranged on the bent axle of torshional vibration damper or motor.External signal wheel 4 parts as Hall type crankshaft position sensor, can confirm crank angle and engine speed by your formula crankshaft position sensor, are beneficial to the firing time of accurate control engine.
Claims (2)
1. a torshional vibration damper, comprise wheel hub (3), coasting body (1) and elastic ring (2), elastic ring (2) is arranged on by compression between coasting body (1) and wheel hub (3) and the two is coupled together, it is characterized in that, the outer wall of coasting body (1) is provided with multi-rib-belt groove (11), and the external signal wheel (4) of band triggering blade is installed on wheel hub (3).
2. torshional vibration damper according to claim 1, is characterized in that, described external signal wheel (4) is arranged on the wheel rim internal face of wheel hub (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021535.2U CN203656047U (en) | 2014-01-10 | 2014-01-10 | Torsional vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420021535.2U CN203656047U (en) | 2014-01-10 | 2014-01-10 | Torsional vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656047U true CN203656047U (en) | 2014-06-18 |
Family
ID=50922438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420021535.2U Expired - Fee Related CN203656047U (en) | 2014-01-10 | 2014-01-10 | Torsional vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021161345A1 (en) * | 2020-02-14 | 2021-08-19 | Hodek Vibration Technologies Pvt. Ltd. | Torsional vibration damper |
-
2014
- 2014-01-10 CN CN201420021535.2U patent/CN203656047U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021161345A1 (en) * | 2020-02-14 | 2021-08-19 | Hodek Vibration Technologies Pvt. Ltd. | Torsional vibration damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20160110 |