CN211202748U - Crankshaft torsion damper - Google Patents
Crankshaft torsion damper Download PDFInfo
- Publication number
- CN211202748U CN211202748U CN201921434950.XU CN201921434950U CN211202748U CN 211202748 U CN211202748 U CN 211202748U CN 201921434950 U CN201921434950 U CN 201921434950U CN 211202748 U CN211202748 U CN 211202748U
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- damping rubber
- rubber circle
- installation face
- belt pulley
- rubber ring
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Abstract
The utility model relates to a crankshaft torsional damper, including wheel hub, belt pulley and the damping rubber circle of assembly together, the damping rubber circle is the wave in week, be equipped with in wheel hub be the wave in week and with the medial surface assorted outside installation face of damping rubber circle, be equipped with on the belt pulley be the wave in week and with the inboard installation face of the lateral surface assorted of damping rubber circle, damping rubber circle centre gripping is between inboard installation face and outside installation face. The utility model has the advantages of through setting up corrugated damping rubber circle, reduced the possibility that stress concentration appears, reduced the shearing force that damping rubber circle received, improved bent axle torsional damper's reliability and life.
Description
Technical Field
The utility model relates to an automobile parts, concretely relates to crankshaft torsional damper.
Background
When an automobile engine works, the magnitude and direction of force acting on a crankshaft are periodically changed, the crankshaft can generate torsional vibration due to the swing of a flywheel with large moment of inertia, and the vibration can greatly influence the riding comfort of an automobile and even influence the operation of the whole power output and transmission system of the automobile; the crankshaft torsional vibration damper assembly has the functions of transmitting the crankshaft torque to accessories such as a water pump, a hydraulic pump, a generator and the like through a belt to drive the accessories to work, simultaneously weakening the torsional vibration of the crankshaft, reducing the harm of the torsional vibration of the crankshaft to an engine and reducing the vibration and noise of the whole vehicle.
The most widely used crankshaft torsional vibration damper is to add a layer of damping rubber ring between the belt pulley and the hub, when the engine runs, the shearing force generated by the torsional vibration makes the rubber ring shear and deform, the energy of the torsional vibration is converted into heat energy, and the torsional vibration of the crankshaft of the engine is weakened and eliminated. However, rubber in the existing crankshaft torsional vibration damper is in a cylindrical shape, torsional vibration of a crankshaft is completely converted into shearing force to act on the vibration damping rubber ring, the vibration damping rubber ring is easily subjected to fatigue damage due to the shearing force, the problems of degumming, rubber falling, rubber tearing and the like are caused, a belt pulley can suddenly fall off in the working process in severe cases, and serious safety accidents can be caused.
Disclosure of Invention
The utility model aims at providing a bent axle torsional damper to improve bent axle torsional damper's reliability and life.
A crankshaft torsional vibration damper, including wheel hub, belt pulley and the damping rubber circle of assembly together, the damping rubber circle is the wave in week, wheel hub is last be in week be the wave and with the medial surface assorted outside installation face of damping rubber circle, be equipped with on the belt pulley in week be the wave and with the inboard installation face of lateral surface assorted of damping rubber circle, damping rubber circle centre gripping in inboard installation face with between the installation face of the outside.
Further, the vibration reduction rubber ring is a rotational symmetric piece.
Further, the vibration reduction rubber ring is an equal wall thickness piece.
Further, the hub, the vibration reduction rubber ring and the belt pulley are fixedly connected together in an interference fit mode.
Further, the hub, the vibration reduction rubber ring and the belt pulley are fixedly connected together in a rubber vulcanization mode.
The utility model has the advantages that the wavy vibration damping rubber ring can reduce the shearing force borne by the vibration damping rubber ring, thereby reducing the possibility of damage of the vibration damping rubber ring, and improving the reliability and the service life of the crankshaft torsional vibration damper; meanwhile, the turning parts of the wavy vibration damping rubber rings are of smooth structures, so that the possibility of stress concentration is reduced, the possibility of damage of the vibration damping rubber rings is further reduced, the reliability and the service life of the crankshaft torsion damper are further improved, and the yield of the vibration damping rubber rings and the assembly success rate of the crankshaft torsion damper are improved.
Drawings
FIG. 1 is a schematic structural diagram of a crankshaft torsional vibration damper according to an embodiment;
FIG. 2 is a schematic view of a pulley;
FIG. 3 is a schematic structural view of a vibration damping rubber ring;
fig. 4 is a schematic structural view of the hub.
In the figure: 1-a hub; 2-a belt pulley; 3, a vibration damping rubber ring; 4-inside mounting surface; 5-outer mounting surface.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 4, the crankshaft torsion damper comprises a hub 1, a belt pulley 2 and a damping rubber ring 3 which are assembled together, wherein the damping rubber ring 3 is wavy in the circumferential direction, an outer side mounting surface 5 which is wavy in the circumferential direction and matched with the inner side surface of the damping rubber ring 3 is arranged on the hub 1, an inner side mounting surface 4 which is wavy in the circumferential direction and matched with the outer side surface of the damping rubber ring 3 is arranged on the belt pulley 2, the inner side mounting surface 4 surrounds the periphery of the outer side mounting surface 5, and the damping rubber ring 3 is clamped between the inner side mounting surface 4 and the outer side mounting surface 5.
In the present embodiment, the outer mounting surface 5 is the outer surface of the hub 1, and the inner mounting surface 4 is the inner surface of the pulley 2.
In the present embodiment, the damping rubber ring 3 is a rotationally symmetrical piece.
In the present embodiment, the damping rubber ring 3 is an equal wall thickness member.
As an implementation mode, the hub 1, the damping rubber ring 3 and the belt pulley 2 are fixedly connected together in an interference fit mode. As another realization mode, the hub 1, the damping rubber ring 3 and the belt pulley 2 are fixedly connected together through a rubber vulcanization mode.
The utility model discloses when torsional vibration takes place at engine work, bent axle, torsional vibration transmits bent axle torsional vibration damper, and wheel hub 1 produces torsional vibration, because outside installation face 5, inboard installation face 4 and damping rubber circle 3 all adopt the wave structure, and when wheel hub 1 produced torsional vibration, outside installation face 5 can follow circumference extrusion damping rubber circle 3, makes damping rubber circle 3 produce deformation, turns into thermal energy with torsional vibration's energy to torsional vibration has been weakened. The utility model can reduce the shearing force borne by the vibration damping rubber ring 3 by arranging the wavy vibration damping rubber ring 3, thereby reducing the possibility of the vibration damping rubber ring 3 being damaged, and improving the reliability and the service life of the crankshaft torsional vibration damper; meanwhile, the turning parts of the wavy damping rubber rings 3 are of smooth structures, so that the possibility of stress concentration is reduced, the possibility of damage of the damping rubber rings 3 is further reduced, the reliability and the service life of the crankshaft torsion damper are further improved, and the yield of the damping rubber rings 3 and the assembly success rate of the crankshaft torsion damper are improved.
Claims (5)
1. The utility model provides a crankshaft torsional damper, includes wheel hub (1), belt pulley (2) and damping rubber circle (3) that the assembly is together, its characterized in that: damping rubber circle (3) are the wave in circumference, be equipped with on wheel hub (1) in the circumference be the wave and with damping rubber circle (3) the medial surface assorted outside installation face (5), be equipped with on belt pulley (2) in the circumference be the wave and with damping rubber circle (3) the lateral surface assorted inboard installation face (4), damping rubber circle (3) centre gripping in inboard installation face (4) with between outside installation face (5).
2. The crankshaft torsional vibration damper of claim 1, wherein: the vibration reduction rubber ring (3) is a rotational symmetric piece.
3. The crankshaft torsional vibration damper of claim 1, wherein: the vibration reduction rubber ring (3) is a piece with equal wall thickness.
4. The crankshaft torsional vibration damper of claim 1, wherein: the wheel hub (1), the vibration reduction rubber ring (3) and the belt pulley (2) are fixedly connected together in an interference fit mode.
5. The crankshaft torsional vibration damper of claim 1, wherein: the wheel hub (1), the vibration reduction rubber ring (3) and the belt pulley (2) are fixedly connected together in a rubber vulcanization mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921434950.XU CN211202748U (en) | 2019-08-31 | 2019-08-31 | Crankshaft torsion damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921434950.XU CN211202748U (en) | 2019-08-31 | 2019-08-31 | Crankshaft torsion damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202748U true CN211202748U (en) | 2020-08-07 |
Family
ID=71888481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921434950.XU Active CN211202748U (en) | 2019-08-31 | 2019-08-31 | Crankshaft torsion damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202748U (en) |
-
2019
- 2019-08-31 CN CN201921434950.XU patent/CN211202748U/en active Active
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