CN210371831U - Combined crankshaft torsion damper - Google Patents
Combined crankshaft torsion damper Download PDFInfo
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- CN210371831U CN210371831U CN201921138491.0U CN201921138491U CN210371831U CN 210371831 U CN210371831 U CN 210371831U CN 201921138491 U CN201921138491 U CN 201921138491U CN 210371831 U CN210371831 U CN 210371831U
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- spring
- ring
- damping device
- hub
- vibration damper
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- 238000013016 damping Methods 0.000 claims abstract description 38
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims 8
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
The utility model discloses a combined type bent axle torsional damper, including outer wheel hub, interior hub, spring damping device and rubber formula damping device, spring damping device sets up between outer wheel hub and interior hub, rubber formula damping device demountable installation is in spring damping device's bottom surface, through spring-rubber combined type damping structure, plays effectual inhibitory action simultaneously to the high frequency of bent axle and low-frequency vibration to and absorb the noise that low-frequency vibration produced effectively, spring damping device and rubber formula damping device adopt detachable coaxial placing, under the prerequisite of guaranteeing the axiality between damping device and outer wheel hub and the interior hub, the replacement cost that reduces whole bent axle torsional damper is changed to solitary one-level damping device, has improved work efficiency. The utility model is used for automobile crankshaft's damping.
Description
Technical Field
The utility model relates to a damping system technical field of automobile engine bent axle, in particular to combined type bent axle torsional damper.
Background
In the operation process of an automobile engine, when the engine reaches a certain rotating speed, particularly when the engine is accelerated and decelerated, the torque output by the engine is suddenly changed greatly, so that the engine is not uniform in operation, the vibration frequency and the noise of the engine are increased along with the mechanical movement of a piston, noise pollution is caused, and the service life of a crankshaft and the overall performance of the engine are greatly reduced after long-term operation.
At present, most of crankshaft vibration dampers used on automobiles adopt single-stage or double-stage rubber vibration damping structures, can play an effective vibration damping effect on high-frequency vibration, but cannot effectively absorb low-frequency vibration and reduce noise generated by the low-frequency vibration. Thereby influencing the overall service performance and service life of the automobile engine and the NVH performance and driving comfort of the automobile.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: a composite crankshaft torsional vibration damper is provided which achieves effective absorption of high frequency and low frequency vibrations and reduction of noise generated by low frequency vibrations.
The utility model provides a solution of its technical problem is:
a combined type crankshaft torsional vibration damper comprises an outer hub, an inner hub, a spring type vibration damper and a rubber type vibration damper, wherein the spring type vibration damper is arranged between the outer hub and the inner hub, and the rubber type vibration damper is detachably arranged on the bottom surface of the spring type vibration damper;
the spring type vibration damper comprises a spring placing shell, two arc-shaped springs and a flange plate, wherein the spring placing shell is an annular shell with a hollow middle part, the spring placing shell is sleeved in an outer hub, the flange plate is coaxially connected with the lower end of the inner hub, the flange plate is arranged in the spring placing shell, an annular inner groove is formed in the spring placing shell, two bosses with central symmetry are arranged in the inner groove, the two arc-shaped springs are arranged in the inner groove in a central symmetry manner, two lugs with central symmetry are connected to the periphery of the flange plate, one arc-shaped spring is arranged between one boss and one lug, the other arc-shaped spring is arranged between the other boss and the other lug, one end of each spring is abutted against the boss, and the other end of each spring is abutted against the lug;
the rubber type vibration damper comprises an outer ring, a rubber ring and a bottom cover, wherein the bottom cover is a middle convex annular shell, the bottom cover is coaxially connected with the bottom of the flange plate, the rubber ring is arranged between the inner peripheral wall of the outer ring and the outer peripheral wall of the bottom cover, and the outer ring is sleeved on the bottom cover through the rubber ring.
As a further improvement of the above scheme, the bottom surface of the bottom cover is provided with a plurality of first through holes, and the plurality of first through holes are annularly arranged around the axis of the bottom cover at intervals.
As a further improvement of the above aspect, the first through hole is elliptical.
As a further improvement of the scheme, the rubber ring and the outer ring are vulcanized into a whole and are in interference fit with the outer peripheral wall of the bottom cover.
As a further improvement of the scheme, the middle of the flange plate is arranged in a downward protruding mode, an annular friction plate and a positioning ring are arranged between the inner edge of the bottom of the spring placing shell and the bottom of the flange plate, the friction plate and the inner edge are in interference fit with the bottom of the flange plate, the outer edge of the friction plate is fixed with the positioning fit ring, and the positioning ring and the inner edge body of the bottom of the spring placing shell are fixed in a matched mode.
As a further improvement of the scheme, a sealing ring is further arranged between the inner edge of the bottom of the spring placing shell and the bottom of the flange plate, the sealing ring is fixed on the lower surface of the friction plate, and the inner edge of the sealing ring is in interference fit with the bottom of the flange plate.
As a further improvement of the above scheme, a shaft sleeve is coaxially arranged in the middle of the outer hub, and the outer hub is sleeved on the outer peripheral wall of the inner hub through the shaft sleeve.
As a further improvement of the scheme, a positioning step is arranged on the outer peripheral wall of the inner hub, and an annular gasket is arranged between the positioning step and the upper end of the shaft sleeve.
As a further improvement of the above scheme, a plurality of second through holes are formed in the side lugs.
The utility model has the advantages that: through spring-rubber combined type damping structure, play effectual inhibitory action simultaneously to the high frequency of bent axle and low frequency vibration to and absorb the noise that low frequency vibration produced effectively, spring damping device and rubber formula damping device adopt detachable coaxial placing, under the prerequisite of guaranteeing the axiality between damping device and outer wheel hub and the interior hub, the replacement of solitary one-level damping device reduces the replacement cost of whole bent axle torsional damper, has improved work efficiency.
The utility model is used for the bent axle damping on the car.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is an exploded view of an embodiment of the invention;
fig. 2 is a bottom schematic view of an embodiment of the invention;
fig. 3 is a schematic view of the top of an embodiment of the invention;
fig. 4 is a schematic structural diagram of a spring type vibration damping device according to an embodiment of the present invention;
fig. 5 is a cross-sectional view of an embodiment of the invention;
fig. 6 is a partially enlarged view of fig. 5.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. The utility model provides an each technical feature can the interactive combination under the prerequisite of conflict each other.
With reference to fig. 1 to 6, this is an embodiment of the invention, in particular:
a combined type crankshaft torsional vibration damper comprises an outer hub 100, an inner hub 200, a spring type vibration damper 300 and a rubber type vibration damper 400, wherein the spring type vibration damper 300 is arranged between the outer hub 100 and the inner hub 200, and the rubber type vibration damper 400 is detachably arranged on the bottom surface of the spring type vibration damper 300;
the spring type vibration damper 300 comprises a spring placing shell 310, two arc-shaped springs 320 and a flange plate 330, wherein the spring placing shell 310 is an annular shell with a hollow middle part, the spring placing shell 310 is sleeved in an outer hub 100, the flange plate 330 is coaxially connected with the lower end of an inner hub 200, the flange plate 330 is arranged in the spring placing shell 310, an annular inner groove 311 is arranged in the spring placing shell 310, two bosses 312 with central symmetry are arranged in the inner groove 311, the two arc-shaped springs 320 are arranged in the inner groove 311 in central symmetry, two lugs 331 with central symmetry are connected with the outer periphery of the flange plate 330, one arc-shaped spring 320 is arranged between one boss 312 and one lug 331, the other arc-shaped spring 320 is arranged between the other boss 312 and the other lug 331, one end of the spring is abutted to the boss 312, the other end of the spring is abutted against the lug 331;
the rubber type vibration damping device 400 comprises an outer ring 410, a rubber ring 420 and a bottom cover 430, wherein the bottom cover 430 is a convex annular shell, the bottom cover 430 is coaxially connected with the bottom of the flange plate 330, the rubber ring 420 is arranged between the inner peripheral wall of the outer ring 410 and the outer peripheral wall of the bottom cover 430, the outer ring 410 is sleeved on the bottom cover 430 through the rubber ring 420, the rubber ring 420 and the outer ring 410 are vulcanized into a whole, and the whole is in interference fit with the outer peripheral wall of the bottom cover 430.
When the engine works, the phenomenon that the crankshafts generate periodic relative torsion among the crank throws under the action of the periodically changed torque is called torsional vibration, and is called torsional vibration for short. When the frequency of change of the engine torque is the same as or an integral multiple of the natural frequency of the crankshaft, resonance occurs. The torsional amplitude is increased during resonance, the abrasion of a transmission mechanism is increased, the power of an engine is reduced, and even a crankshaft is broken. In order to reduce torsional vibration of the crankshaft, a torsional damper is provided in the front stage of the crankshaft where the torsional amplitude is the largest. When the engine works, the inner hub 200 is connected with the front end of a crankshaft of the engine in a matching way, the outer edge of the outer hub 100 is connected with a belt in a matching way, the whole shock absorber rotates together with the crankshaft and vibrates together, when the engine runs unevenly, the vibration frequency of the engine per se is increased along with the mechanical movement of a piston, at the moment, the crankshaft has larger torsional vibration transmitted to the inner hub 200 of the torsional shock absorber due to the sudden change of the rotating speed of the crankshaft, so that the inner hub 200 generates torsional vibration, the flange plate 330 fixedly connected with the inner hub 200 vibrates along with the torsional vibration of the inner hub 200, and the edge lug 331 on the flange plate 330 compresses the arc spring 320, and the torsional vibration of the crankshaft is subjected to primary damping at the position due to the elastic deformation of the arc spring 320. In addition, the bottom cover 430 fixedly coupled to the inner hub 200 also generates torsional vibration along with the inner hub 200, and since the outer ring 410 lags behind the bottom cover 430, relative movement occurs therebetween, causing the rubber ring 420 to rub back and forth, and the vibration energy is absorbed by the inner frictional damping of the rubber ring 420, where the torsional vibration of the crankshaft is secondarily damped. For the high-frequency torsional vibration of the crankshaft, the inner friction damping provided by the rubber ring 420 and the elastic damping provided by the small deformation amount of the arc-shaped spring 320, so the vibration damping device can realize the quick and effective vibration damping effect on the high-frequency torsional vibration of the crankshaft. For low-frequency torsional vibrations of the crankshaft, the large deformation amount of the arc spring 320 can provide large elastic damping to effectively damp the torsional vibrations, so that effective damping of the low-frequency torsional vibrations of the crankshaft can be realized. The spring-rubber composite vibration damping structure plays an effective inhibiting role on high-frequency and low-frequency vibration of the crankshaft at the same time, and effectively absorbs noise generated by the low-frequency vibration. And the spring type vibration damper and the rubber type vibration damper are arranged in a detachable coaxial mode, on the premise that the coaxiality between the vibration damper and the outer hub and the coaxiality between the vibration damper and the inner hub are guaranteed, the replacement cost of the whole crankshaft torsion damper is reduced through replacement of the single one-stage vibration damper, and the working efficiency is improved.
In a further preferred embodiment, a plurality of first through holes 431 are provided in the bottom surface of the bottom cover 430, and the plurality of first through holes 431 are arranged at intervals in a ring shape around the axis of the bottom cover 430. The first through hole 431 has an elliptical shape. Because the hysteresis quality of the rubber ring 420 and the outer ring 410 and the outer peripheral wall of the bottom cover 430 rub to and fro to generate heat energy, at the moment, the elliptical first through hole 431 on the bottom cover 430 can play a good heat dissipation effect, thereby greatly reducing the thermal fatigue of the rubber ring 420 during working and prolonging the service life of the rubber ring 420.
Further as a preferred embodiment, the middle of the flange plate 330 is provided with a downward protrusion, an annular friction plate 340 and a positioning ring 350 are arranged between the inner edge of the bottom of the spring placing casing 310 and the bottom of the flange plate 330, the friction plate 340 and the inner edge are in interference fit with the bottom of the flange plate 330, the outer edge of the friction plate 340 is fixed with the positioning ring, and the positioning ring 350 is fixed with the inner edge of the bottom of the spring placing casing 310 in a matching manner. The friction plate 340 prevents the flange 330 from directly contacting the spring placement housing 310 during operation. The relative rotation can take place for the casing 310 is placed to ring flange 330 and spring, can place the bottom of casing 310 through friction disc 340 and play the effect of shutoff to the spring, avoid the foreign matter to enter into the spring and place in the casing 310 to influence the normal work of arc spring 320, also can reduce the frictional force that produces between ring flange 330 and the spring place casing 310, the fixed mounting of friction disc 340 can be convenient for to holding ring 350.
Further as a preferred embodiment, a sealing ring 360 is further arranged between the inner edge of the bottom of the spring placing shell 310 and the bottom of the flange 330, the sealing ring 360 is fixed on the lower surface of the friction plate 340, and the inner edge of the sealing ring 360 is in interference fit with the bottom of the flange 330. The friction plate 340 is further fixedly mounted by the seal ring 360, and the sealing performance is also improved.
In a further preferred embodiment, a sleeve 110 is coaxially disposed in the middle of the outer hub 100, and the outer hub 100 is fitted to the outer peripheral wall of the inner hub 200 via the sleeve 110. The sleeve 110 reduces friction between the inner wall of the outer hub 100 and the inner hub 200, and improves the coaxiality of the inner hub 200 and the outer hub 100.
Further, in a preferred embodiment, a positioning step 210 is provided on the outer circumferential wall of the inner hub 200, and an annular spacer 111 is provided between the positioning step 210 and the upper end of the boss 110. The positioning step 210 serves to limit the boss 110 and also limits the entire spring type damper device 300 and the outer hub 100, thereby preventing displacement in the axial direction of the inner hub 200.
In a further preferred embodiment, a second through hole 332 is formed in the lug 331, and a plurality of second through holes 332 are provided. On the premise of ensuring the structural rigidity of the flange 330, the light weight of the shock absorber is realized, the second through holes 332 in the lug 331 can achieve a good heat dissipation effect, the thermal fatigue of internal parts of the shock absorber is reduced, and the service life of the crankshaft torsion shock absorber is prolonged.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (9)
1. A combined crankshaft torsional vibration damper is characterized in that: the damping device comprises an outer hub (100), an inner hub (200), a spring type damping device (300) and a rubber type damping device (400), wherein the spring type damping device (300) is arranged between the outer hub (100) and the inner hub (200), and the rubber type damping device (400) is detachably mounted on the bottom surface of the spring type damping device (300);
the spring type vibration damper (300) comprises a spring placing shell (310), two arc-shaped springs (320) and a flange plate (330), wherein the spring placing shell (310) is an annular shell with a hollow middle part, the spring placing shell (310) is sleeved in an outer hub (100), the flange plate (330) is coaxially connected with the lower end of an inner hub (200), the flange plate (330) is arranged in the spring placing shell (310), an annular inner groove (311) is formed in the spring placing shell (310), two bosses (312) with central symmetry are arranged in the inner groove (311), the two arc-shaped springs (320) are arranged in the inner groove (311) in a central symmetry manner, two lugs (331) with central symmetry are connected to the periphery of the flange plate (330), one arc-shaped spring (320) is arranged between one of the bosses (312) and one of the lugs (331), the other arc-shaped spring (320) is arranged between the other boss (312) and the other lug (331), one end of the spring is abutted against the boss (312), and the other end of the spring is abutted against the lug (331);
the rubber type vibration damping device (400) comprises an outer ring (410), a rubber ring (420) and a bottom cover (430), wherein the bottom cover (430) is a convex annular shell, the bottom cover (430) is coaxially connected with the bottom of the flange plate (330), the rubber ring (420) is arranged between the inner peripheral wall of the outer ring (410) and the outer peripheral wall of the bottom cover (430), and the outer ring (410) is sleeved on the bottom cover (430) through the rubber ring (420).
2. The compound crankshaft torsional vibration damper of claim 1, wherein: the bottom surface of the bottom cover (430) is provided with a plurality of first through holes (431), and the first through holes (431) are arranged around the axis of the bottom cover (430) at intervals in a ring shape.
3. The compound crankshaft torsional vibration damper of claim 2, wherein: the first through hole (431) is oval.
4. The compound crankshaft torsional vibration damper of claim 1, wherein: the rubber ring (420) and the outer ring (410) are vulcanized into a whole, and the whole is in interference fit with the outer peripheral wall of the bottom cover (430).
5. The compound crankshaft torsional vibration damper of claim 1, wherein: the middle part of ring flange (330) is down protruding setting be equipped with annular friction disc (340) and holding ring (350) between the bottom of the inward flange of spring placement casing (310) bottom and ring flange (330), the bottom interference fit of friction disc (340) and inward flange and ring flange (330), the outward flange and the location fit ring of friction disc (340) are fixed, the cooperation of the internal flange body of casing (310) bottom is placed with the spring to holding ring (350) is fixed.
6. The compound crankshaft torsional vibration damper of claim 5, wherein: still be equipped with sealing washer (360) between the bottom of the internal edge of spring placement shell (310) bottom and ring flange (330), sealing washer (360) are fixed at the lower surface of friction disc (340), the internal edge and ring flange (330) bottom interference fit of sealing washer (360).
7. The compound crankshaft torsional vibration damper of claim 1, wherein: the middle part of the outer hub (100) is coaxially provided with a shaft sleeve (110), and the outer hub (100) is sleeved on the peripheral wall of the inner hub (200) through the shaft sleeve (110).
8. The compound crankshaft torsional vibration damper of claim 7, wherein: the outer peripheral wall of the inner hub (200) is provided with a positioning step (210), and an annular gasket (111) is arranged between the positioning step (210) and the upper end of the shaft sleeve (110).
9. The compound crankshaft torsional vibration damper of claim 1, wherein: a plurality of second through holes (332) are formed in the edge lug (331), and the second through holes (332) are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138491.0U CN210371831U (en) | 2019-07-18 | 2019-07-18 | Combined crankshaft torsion damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138491.0U CN210371831U (en) | 2019-07-18 | 2019-07-18 | Combined crankshaft torsion damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371831U true CN210371831U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921138491.0U Expired - Fee Related CN210371831U (en) | 2019-07-18 | 2019-07-18 | Combined crankshaft torsion damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210371831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500381A (en) * | 2019-07-18 | 2019-11-26 | 佛山科学技术学院 | A kind of combined type crankshaft tortional vibration damper |
-
2019
- 2019-07-18 CN CN201921138491.0U patent/CN210371831U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500381A (en) * | 2019-07-18 | 2019-11-26 | 佛山科学技术学院 | A kind of combined type crankshaft tortional vibration damper |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 |