CN108999926B - Crankshaft torsion damper and crankshaft torsion damping structure - Google Patents
Crankshaft torsion damper and crankshaft torsion damping structure Download PDFInfo
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- CN108999926B CN108999926B CN201811011345.1A CN201811011345A CN108999926B CN 108999926 B CN108999926 B CN 108999926B CN 201811011345 A CN201811011345 A CN 201811011345A CN 108999926 B CN108999926 B CN 108999926B
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- crankshaft
- engine
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- spoke
- rim
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/124—Elastomeric springs
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
- F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a crankshaft torsion damper and a crankshaft torsion damping structure, which comprise a rotating wheel, wherein a damping rubber ring and an inertia ring are arranged on the rotating wheel, the damping rubber ring is positioned between the rotating wheel and the inertia ring, the rotating wheel comprises a hub connected with a crankshaft, a rim coaxially arranged with the hub and a spoke arranged between the hub and the rim, the spoke comprises a plurality of spokes uniformly distributed in the circumferential direction, and the spokes and the hub form an axial-flow impeller. The axial-flow impeller is formed by skillfully arranging the spoke structure, and the vibration reduction rubber ring of the crankshaft torsion damper is cooled in the working process of the engine.
Description
Technical Field
The invention relates to a crankshaft torsion vibration damping structure, in particular to a crankshaft torsion vibration damper and a crankshaft torsion vibration damping structure.
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 swinging of a flywheel with large moment of inertia, and the vibration can greatly influence the riding comfort of the automobile and even influence the operation of the whole power output and transmission system; the crankshaft torsional vibration damper has the functions of 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 common crankshaft torsional vibration damper in the prior art is a rubber crankshaft torsional vibration damper, which comprises a hub, an inertia ring and a vibration damping rubber ring positioned between the hub and the inertia ring, wherein the torque of a crankshaft is directly transmitted to the hub, the torque on the hub is transmitted to the inertia ring through the damping action of the vibration damping rubber ring, when the variation frequency of the gas explosion pressure in an engine cylinder is the same as or integral multiple of the self-vibration frequency of the crankshaft torsion, the resonance occurs, at the moment, the amplitude of the inertia ring of the crankshaft torsional vibration damper relative to the hub is increased, and the kneading amount of the vibration damping rubber ring is also increased. The vibration damping rubber ring is repeatedly and violently rubbed, so that the temperature of the vibration damping rubber ring is sharply increased, the risk of damage of the vibration damping rubber ring is increased, the phenomena of thermal aging and cracking of the vibration damping rubber ring are easily caused, and the belt pulley can fall off in the working process of the engine in serious cases.
Disclosure of Invention
The invention aims to provide a crankshaft torsion damper and a crankshaft torsion damping structure so as to cool a damping rubber ring of the crankshaft torsion damper in the working process of an engine.
The invention discloses a crankshaft torsion damper, which comprises a rotating wheel, wherein a damping rubber ring and an inertia ring are arranged on the rotating wheel, the damping rubber ring is positioned between the rotating wheel and the inertia ring, the rotating wheel comprises a hub, a rim and a spoke, the hub is used for being connected with a crankshaft, the rim is coaxially arranged with the hub, the spoke is arranged between the hub and the rim, the spoke comprises a plurality of spokes uniformly distributed in the circumferential direction, and the spokes and the hub form an axial-flow impeller.
Further, the vibration reduction rubber ring is sleeved on the rim, and the inertia ring is sleeved on the vibration reduction rubber ring.
Furthermore, one end of the spoke is fixedly connected with the hub, and the other end of the spoke is fixedly connected with the rim.
Furthermore, a belt groove is formed in the outer circumferential surface of the rim or the outer circumferential surface of the inertia ring.
The invention further provides a crankshaft torsional vibration damping structure which comprises an engine front cover, a crankshaft and the crankshaft torsional vibration damper, wherein one end of the crankshaft extends out of the engine front cover and is fixedly connected with the hub, the axial-flow type impeller is used for blowing air to the engine front cover, and gaps for airflow output by the axial-flow type impeller to pass through are formed between the rim and the engine front cover, between the spoke and the engine front cover, between the vibration damping rubber ring and the engine front cover and between the inertia ring and the engine front cover.
Further, a flow guide structure for guiding at least a part of the airflow output by the axial-flow type impeller to the vibration reduction rubber ring is arranged on the outer surface of the front engine cover.
Further, the flow guide structure is an annular groove arranged on the outer surface of the front cover of the engine.
Furthermore, a plurality of reinforcing ribs are uniformly distributed in the annular groove, and the plurality of reinforcing ribs extend along the radial direction of the annular groove.
Further, the section of the annular groove is arc-shaped.
The axial-flow impeller is formed by skillfully arranging the spoke structure, and the vibration reduction rubber ring of the crankshaft torsion damper is cooled in the working process of the engine.
Drawings
FIG. 1 is a schematic structural view of a crankshaft torsional vibration damping arrangement according to the present invention;
FIG. 2 is a cross-sectional view of a crankshaft torsional vibration damping arrangement according to the present invention;
FIG. 3 is a schematic structural view of the rotor;
FIG. 4 is a schematic view of the structure of an annular groove;
FIG. 5 is a schematic structural view of a crankshaft torsional vibration damper of the present invention.
In the figure: 1-crankshaft; 2, an engine front cover; 3, a hub; 4, a wheel rim; 5-spokes; 6-inertia ring; 7, a vibration damping rubber ring; 8-an annular groove; 9-a via hole; 10, oil sealing; 11-bolt; 12-a gasket; 13-reinforcing rib.
Detailed Description
The invention will be further explained with reference to the drawings.
The first embodiment is as follows:
as shown in fig. 3 and 5, the crankshaft torsion damper comprises a rotating wheel, a damping rubber ring 7 and an inertia ring 6 are mounted on the rotating wheel, the damping rubber ring 7 is located between the rotating wheel and the inertia ring 6, the damping rubber ring 7 can rotate along with the rotating wheel, the inertia ring 6 can rotate along with the damping rubber ring 7, the rotating wheel comprises a hub 3 connected with the crankshaft 1, a rim 4 coaxially arranged with the hub 3 and spokes arranged between the hub 3 and the rim 4, the spokes comprise a plurality of spokes 5 uniformly distributed in the circumferential direction, a channel for air flow to pass through is arranged between every two adjacent spokes 5, the spokes 5 and the hub 3 form an axial-flow impeller, the spokes 5 are axially twisted along the hub 3 from inside to outside, axial flow type blades can be formed, the torsion direction is matched with the rotation direction of a crankshaft, and the axial flow type impeller can blow air towards the direction of a front cover of an engine when the crankshaft torsion damper works. Damping rubber circle 7 cover is on rim 4, and inertia ring 6 covers is on damping rubber circle 7, and damping rubber circle 7 can be along with rim 4 rotates, and inertia ring 6 can rotate along with damping rubber circle 7. One end of the spoke 5 is fixedly connected with the hub 3, the other end of the spoke 5 is fixedly connected with the rim 4, and the hub 3, the spoke 5 and the rim 4 are formed in an integrated forming mode, such as casting; a belt groove is provided on the outer circumferential surface of the rim 4 or the inertia ring 6.
By adopting the technical scheme, in actual configuration, the torsion direction of the spokes is configured by matching the rotation direction of the crankshaft, so that the axial-flow impeller can blow air towards the direction of the front cover of the engine when the crankshaft torsion damper works. Therefore, the vibration damping rubber ring 7 of the crankshaft torsion damper can be cooled by air cooling by utilizing the airflow blown by the axial-flow impeller.
Example two
As shown in fig. 1, 2 and 4, a crankshaft torsional vibration damping structure includes an engine front cover 2, a crankshaft 1 and the crankshaft torsional vibration damper described in the first embodiment, one end of the crankshaft 1 extends out of the engine front cover 2 and is fixedly connected with a hub 3, an axial-flow impeller is used for blowing air to the engine front cover 2, and gaps for passing air flow output by the axial-flow impeller are respectively arranged between the rim 4 and the engine front cover 2, between a spoke and the engine front cover 2, between a damping rubber ring 7 and the engine front cover 2, and between an inertia ring 6 and the engine front cover 2, and the gaps form an air flow channel. The outer surface of the front engine cover 2 is provided with a flow guide structure for guiding at least a part of airflow output by the axial-flow impeller to the vibration reduction rubber ring 7, the flow guide structure is an annular groove 8 arranged on the outer surface of the front engine cover 2, the annular groove 8 and the crankshaft torsion vibration reduction structure are coaxially arranged, the molded line and the structural size of the section of the annular groove 8 are determined according to the size and the position of the axial-flow impeller and the size and the position of the vibration reduction rubber ring 7, and the air flow blowing to the vibration reduction rubber ring 7 can be increased. In order to ensure the strength and rigidity of the front engine cover 2, a plurality of reinforcing ribs 13 are uniformly distributed in the annular groove 8, the plurality of reinforcing ribs 13 extend along the radial direction of the annular groove 8, and the plurality of reinforcing ribs 13 are uniformly distributed along the circumferential direction of the annular groove 8.
In this embodiment, the cross section of the annular groove 8 is arc-shaped, the annular groove 8 is composed of an air outlet surface and a wind facing surface, the groove depth of which gradually increases along the direction of decreasing the diameter of the annular groove 8, the small diameter end of the air outlet surface is connected with the large diameter end of the wind facing surface, the wind facing surface faces the axial-flow impeller, at least a part of the airflow blown out by the axial-flow impeller enters the wind facing surface and enters the air outlet surface through the wind facing surface, one end of the damping rubber ring 7 faces the air outlet surface, at least a part of the airflow entering the air outlet surface is guided by the air outlet surface and blows towards the damping rubber ring 7, and the airflow direction is shown by hollow arrows in fig. 1 and 2.
As shown in fig. 2, in this embodiment, the hub 3 is sleeved on the end of the crankshaft 1 and is circumferentially fixed by a key connection, a threaded hole is coaxially formed in the end of the crankshaft 1, the bolt 11 penetrates through the hub 3 to be matched with the threaded hole, a gasket 12 is arranged between the head of the bolt 11 and the end surface of the hub 3, the hub 3 is fixed on the crankshaft 1 through the bolt 11 and the gasket 12, a step surface for axially limiting the hub 3 can also be arranged on the crankshaft 1, a through hole 9 for the crankshaft 1 to extend out is formed in the engine front cover 2, an oil seal 10 is arranged between the through hole 9 and the crankshaft 1, or an oil seal 10 is arranged between the through hole 9 and the hub 3.
By adopting the technical scheme, during actual configuration, the torsion direction of the spokes 5 is configured by matching with the rotation direction of the crankshaft 1, so that when the crankshaft torsion damper works, the axial-flow impeller can blow air to the direction of the front cover cap 2 of the engine, the air flow blown out by the axial-flow impeller passes through the air flow channel to cool the damping rubber ring 7 in an air cooling way, and meanwhile, the inertia ring 6 and the rim 4 in the air cooling way can be cooled; and set up the water conservancy diversion structure and can make more air currents blow to damping rubber circle 7, strengthened the air-cooled cooling to damping rubber circle 7.
Claims (1)
1. The utility model provides a bent axle twists reverse damping structure which characterized in that: including engine shroud, bent axle and bent axle torsional damper, bent axle torsional damper includes the runner, install damping rubber circle and inertia ring on the runner, damping rubber circle is located the runner with between the inertia ring, the runner including be used for with the bent axle link to each other wheel hub, with wheel hub coaxial setting's rim and setting are in wheel hub with spoke between the rim, the spoke includes many spokes evenly distributed in circumference, many the spoke with wheel hub constitutes axial-flow impeller, the one end of bent axle outwards stretch out in engine shroud and with wheel hub fixed connection, axial-flow impeller is used for to engine shroud bloies, the rim with between the engine shroud the spoke with between the engine shroud the damping rubber circle with between the engine shroud and inertia ring with all have the confession between the engine shroud the wheel hub is used for A gap through which an air flow output from the axial-flow impeller passes; the outer surface of the front engine cover is provided with a flow guide structure for guiding at least a part of airflow output by the axial-flow impeller to the vibration reduction rubber ring; the flow guide structure is an annular groove arranged on the outer surface of the front cover of the engine; a plurality of reinforcing ribs are uniformly distributed in the annular groove, and all the reinforcing ribs extend along the radial direction of the annular groove; the section of the annular groove is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811011345.1A CN108999926B (en) | 2018-08-31 | 2018-08-31 | Crankshaft torsion damper and crankshaft torsion damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811011345.1A CN108999926B (en) | 2018-08-31 | 2018-08-31 | Crankshaft torsion damper and crankshaft torsion damping structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108999926A CN108999926A (en) | 2018-12-14 |
| CN108999926B true CN108999926B (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811011345.1A Active CN108999926B (en) | 2018-08-31 | 2018-08-31 | Crankshaft torsion damper and crankshaft torsion damping structure |
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| CN (1) | CN108999926B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854711A (en) * | 2019-02-01 | 2019-06-07 | 宁波拓普集团股份有限公司 | A kind of balance shaft gear |
| CN115235776B (en) * | 2022-06-30 | 2023-08-18 | 潍柴动力股份有限公司 | Torsional vibration monitoring method, device and system for leaf spring damper shaft system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU674318B2 (en) * | 1993-05-07 | 1996-12-19 | Metaldyne, Llc | Dual mode damper |
| DE4448047B4 (en) * | 1994-07-20 | 2010-10-07 | Zf Sachs Ag | Dual mass flywheel for an internal combustion engine |
| US7166678B2 (en) * | 2004-03-31 | 2007-01-23 | The Gates Corporation | Rubber composition and vibration damper using the rubber composition |
| CN201100364Y (en) * | 2007-08-29 | 2008-08-13 | 朱恩德 | Energy-saving fly wheel for single jar diesel engine |
| CN201575104U (en) * | 2009-11-27 | 2010-09-08 | 潍柴动力股份有限公司 | Silicone oil shock absorber of engine |
| CN101886685A (en) * | 2010-07-19 | 2010-11-17 | 奇瑞汽车股份有限公司 | Vibration damper assembly |
| FR2995834B1 (en) * | 2012-09-25 | 2014-09-05 | Valeo Equip Electr Moteur | TRANSMISSION ASSEMBLY FOR MOTOR VEHICLE |
| CN103511544A (en) * | 2013-10-08 | 2014-01-15 | 潍柴动力股份有限公司 | Engine and heat dissipation device of silicone oil damper of engine |
| CN108316999A (en) * | 2018-03-13 | 2018-07-24 | 华南理工大学 | A kind of cooling fan of engine with bending compound vibration-damper |
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2018
- 2018-08-31 CN CN201811011345.1A patent/CN108999926B/en active Active
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| CN108999926A (en) | 2018-12-14 |
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