CN108412599B - Engine cooling fan with two-stage parallel torsional damper - Google Patents
Engine cooling fan with two-stage parallel torsional damper Download PDFInfo
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- CN108412599B CN108412599B CN201810204661.4A CN201810204661A CN108412599B CN 108412599 B CN108412599 B CN 108412599B CN 201810204661 A CN201810204661 A CN 201810204661A CN 108412599 B CN108412599 B CN 108412599B
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- Prior art keywords
- ring
- stage
- torsional vibration
- groove
- damping rubber
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- 238000001816 cooling Methods 0.000 title claims abstract description 21
- 238000013016 damping Methods 0.000 claims abstract description 63
- 238000004073 vulcanization Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pulleys (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an engine cooling fan with a two-stage parallel type torsional vibration damper, which comprises an input shaft, a driving disk, a driven disk, a fan hub disc, a groove-shaped ring, a first-stage torsional vibration damping rubber block, a first-stage inertial mass ring, a second-stage torsional vibration damping rubber ring, an L-shaped ring, bolts and screws, wherein the driving disk is fixedly connected with the input shaft through the bolts, the groove-shaped ring is fixedly connected with the driving disk through the bolts, the first-stage inertial mass ring is arranged in the groove-shaped ring, the first-stage torsional vibration damping rubber block is uniformly distributed in the groove-shaped ring along the circumferential direction, one side of the first-stage torsional vibration damping rubber block is bonded with the inner wall of the outer ring of the groove-shaped ring through vulcanization, and the other side of the first-stage torsional vibration damping rubber block is bonded with the first-stage inertial mass ring through vulcanization; the central hole of the L-shaped ring is assembled and connected with the inner ring of the groove-shaped ring through interference fit. The invention adopts a double-stage torsional vibration damping system, improves vibration damping, reduces the rigidity and the natural frequency of the hub, and more effectively reduces torsional vibration in a fan transmission system.
Description
Technical Field
The invention relates to an engine cooling fan, in particular to an engine cooling fan with a double-stage parallel torsional vibration damper.
Background
With the rapid development of the automobile industry in China, automobiles become an indispensable part of most families, and the requirements of people on the performance of the automobiles are continuously improved while the automobiles are used as vehicles, so that the research and development work of the automobile comfort is gradually paid attention to the automobile industry. The cooling system is one of sources of noise and vibration, the fan rotor comprises all rotating bodies such as blades, front and rear flange assemblies, a transmission shaft, a belt pulley and the like, the center of the fan rotor is hardly overlapped with the center of rotation, unbalanced centrifugal force can be generated when the rotor rotates, the rotor and a bearing simultaneously vibrate, bearing load is increased, bearing service life is shortened, and mechanical noise is increased. In addition, for cost reasons, direct driving modes are not used at all, namely, the fan is connected with the hub through bolts, and the engine crank pulley directly drives the fan to rotate. The distance between transmission shafts of some vehicle types is too small, the fan needs to be arranged at the crankshaft end and is directly driven by the crankshaft, thus torsional vibration of the engine is easy to be transmitted to the fan hub, if an effective vibration reduction system is not available, the fan hub and even the blades are easy to generate overlarge vibration amplitude, the stress received by the fan hub is larger, thereby reducing the fatigue life, and in addition, larger vibration stress and noise are easy to generate during resonance.
Disclosure of Invention
The present invention is directed to an engine cooling fan with a dual-stage parallel torsional vibration damper to solve the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an engine cooling fan with a two-stage parallel torsional vibration damper comprises an input shaft, a driving disk, a driven disk and a fan hub disk, wherein a fan made of plastic material is embedded in the fan hub disk, the fan is fixed with the fan hub disk during injection molding,
the driving disc is fixedly connected with the input shaft through the bolts, the groove-shaped ring is fixedly connected with the driving disc through the bolts, the first-stage inertia mass ring is arranged in the groove-shaped ring, the first-stage torsion vibration damping rubber blocks are uniformly distributed in the groove-shaped ring along the circumferential direction, one side of the first-stage torsion vibration damping rubber blocks is bonded with the inner wall of the outer ring of the groove-shaped ring through vulcanization, and the other side of the first-stage torsion vibration damping rubber blocks is bonded with the first-stage inertia mass ring through vulcanization; the center hole of L type ring passes through interference fit and the inner ring assembly connection of groove type ring, second grade torsion damping rubber ring is in axial one side and L type episulfide bonding, and opposite side is connected with the driven plate, driven plate and fan hub disc pass through bolt fixed connection.
Further, a friction ring with a friction coefficient lower than 0.1 is arranged between the driven disc and the peripheral wall of the outer ring of the groove-shaped ring.
Further, the friction ring is made of Teflon materials, so that the driven disc and the groove-shaped ring can rotate relatively, and meanwhile, the friction ring plays a certain supporting role on the driven disc.
Further, the inner wall of the outer ring of the groove-shaped ring is uniformly provided with a plurality of grooves for positioning each primary torsion damping rubber block along the circumferential direction.
Further, a plurality of holes are uniformly formed in the side ring surface of the side part of the L-shaped ring, and the secondary torsional vibration damping rubber is bonded on the side ring surface through ring vulcanization and is filled with the holes to form a plurality of bulges for increasing the shearing bonding force of the secondary torsional vibration damping rubber ring.
Further, a supporting convex ring is arranged on the secondary torsional vibration damping rubber ring, and the secondary torsional vibration damping rubber ring is bonded with the inner circular surface of the driven disc through the supporting convex ring to realize connection.
Further, a plurality of through holes for connecting the driving disc are formed in the end face of the inner ring along the circumferential direction.
Further, the middle part of the driving disc is provided with a plurality of bolt holes connected with the input shaft through bolts and a plurality of threaded holes connected with the groove-shaped ring through bolts.
Further, the outer edge of the driving disc is provided with an annular surface in an extending mode, and the annular surface is used for preventing damage caused by falling off of parts and impact of other parts due to degumming of the secondary torsion damping rubber ring.
Further, two side surfaces of the primary torsion damping rubber block along the axial direction of the groove-shaped ring are inner concave surfaces, and the contour line of the inner concave surfaces is adjusted according to the required inherent frequency or rigidity.
Compared with the prior art, the invention has the beneficial effects that:
the engine cooling fan adopts a secondary torsional vibration damping system, so that the vibration damping is improved, and the torsional vibration in a fan transmission system is effectively reduced; the parallel first-stage torsional vibration damping system is characterized in that a plurality of damping rubber circumferentially distributed blocks are used for adjusting the size of the damping rubber, so that the natural frequency of the first-stage torsional vibration damping system can be easily changed, and the damping rubber can be used as an active vibration damping system to reduce the amplitude of resonance; the two-stage vibration reduction system adopts a modularized structure, can be manufactured separately and assembled, improves the production efficiency, and meanwhile, the two-stage system and the driving disc are mutually protected, so that parts are effectively prevented from falling off and striking other parts.
Drawings
FIG. 1 is a schematic view of the cooling fan assembly of the present invention;
FIG. 2 is a schematic view in partial cross-section of an axle side of the hub assembly;
FIG. 3 is a schematic front view of the hub assembly;
FIG. 4 is a schematic cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic diagram of the structure of an active disc;
FIG. 6 is a schematic diagram of a primary torsional vibration damping system;
FIG. 7 is a schematic diagram of a slotted ring configuration;
FIG. 8 is a schematic diagram of a two-stage torsional vibration damping system;
FIG. 9 is a schematic structural view of an L-ring;
fig. 10 is a schematic structural view of a two-stage torsional vibration damping rubber ring.
The figure shows: 1-input shaft, 2-driving disk, 21-threaded hole, 22-ring surface, 3-groove type ring, 31-groove, 32-inner ring, 33-through hole, 34-outer ring, 4-first-stage torsion damping rubber block, 5-first-stage inertial mass ring, 6-second-stage torsion damping rubber ring, 61-supporting convex ring, 62-bulge, 7-L-shaped ring, 72-side ring surface, 71-hole, 8-bolt, 9-screw, 10-friction ring, 11-driven disk, 12-fan hub disk, 13-fan.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
As shown in fig. 1 to 4, an engine cooling fan with a two-stage parallel torsional damper comprises an input shaft 1, a driving disk 2, a driven disk 11, a fan hub disk 12, a groove ring 3, eight primary torsional damping rubber blocks 4, a primary inertial mass ring 5, a secondary torsional damping rubber ring 6, an L-shaped ring 7, a plurality of bolts 8, a plurality of screws 9 and a friction ring 10, wherein a fan 13 made of plastic materials is embedded in the fan hub disk 12, the fan 13 is fixed with the fan hub disk 12 during injection molding, the driving disk 2 is fixedly connected with the input shaft 1 through the bolts 8, the groove ring 3 is fixedly connected with the driving disk 2 through the screws 9, the primary inertial mass ring 5 is arranged in the groove ring 3, the primary torsional damping rubber blocks 4 are circumferentially uniformly distributed in the groove ring 3, one side of the primary torsional damping rubber blocks 4 is bonded with the inner wall of an outer ring 34 of the groove ring 3 through vulcanization, and the other side of the primary inertial mass ring 5 is bonded with vulcanization; the center hole of L type ring 7 passes through interference fit and the inner ring 32 assembly connection of groove ring 3, second grade torsion damping rubber ring 6 is in axial one side and L type ring 7 vulcanization bonding, opposite side and driven plate 11 are connected, driven plate 11 and the outer peripheral wall of the outer loop 34 of groove ring 3 between be equipped with friction ring 10 that coefficient of friction is less than 0.1, friction ring 10 be made by the teflon material for driven plate and groove ring both can relative rotation, the friction ring plays certain supporting role to driven plate 11 simultaneously, driven plate 11 and fan hub disc 12 pass through eight bolt fixed connection.
Eight grooves 31 for positioning each primary torsion damping rubber block 4 are uniformly formed in the inner wall of the outer ring 34 of the groove-shaped ring 3 along the circumferential direction, so that each primary torsion damping rubber block 4 does not fall off, and the groove-shaped ring 3, the primary torsion damping rubber block 4 and the primary inertia mass ring 5 form a primary torsion damping system; the secondary torsional vibration damping rubber ring 6 is provided with a supporting convex ring 61, the secondary torsional vibration damping rubber ring 6 is connected with the inner circular surface of the driven plate 11 through the supporting convex ring 61 in a bonding mode, the L-shaped ring 7, the secondary torsional vibration damping rubber ring 6, the driven plate 11, the fan hub disc 12 and the fan 13 form a secondary torsional vibration damping system, and the inner ring 32 is used for supporting a driving part L-shaped ring 7 of the secondary torsional vibration damping system.
The side ring surface 72 at the side part of the L-shaped ring 7 is uniformly provided with a plurality of holes 71, the secondary torsion damping rubber ring 6 is vulcanized and bonded on the side ring surface 72 and is filled with the holes 71 to form a plurality of bulges 62 for increasing the shearing bonding force of the secondary torsion damping rubber ring 6, and the shearing bonding force of the secondary torsion damping rubber ring 6 is increased.
The end surface of the inner ring 32 is provided with a plurality of through holes 33 along the circumferential direction for connecting with the driving disk 2, thereby forming a flange surface.
Four bolt holes which are connected with the input shaft 1 through bolts 8 and four threaded holes which are connected with the groove-shaped ring 3 through bolts 9 are formed in the middle of the driving disc 2.
The outer edge of the driving disc 2 is provided with an annular surface 22 in an extending mode, and the annular surface 22 is used for preventing damage caused by falling off of parts and impact of other parts due to degumming of the secondary torsional vibration damping rubber ring 6.
The two side surfaces of the primary torsional vibration damping rubber block 4 along the axial direction of the groove-shaped ring 3 are inner concave surfaces, and the contour line of the inner concave surfaces is adjusted according to the required inherent frequency or rigidity.
The working principle of the engine cooling fan with the two-stage parallel torsional vibration damper provided by the embodiment is as follows: the output end of the crankshaft of the engine is directly connected with the input shaft 1 or connected through a belt pulley to realize power input, torsional vibration of the crankshaft of the engine is transmitted to the cooling fan assembly, a primary vibration damping system consisting of a groove ring 3, a primary torsional vibration damping rubber block 4 and a primary inertia mass ring 5 and a secondary vibration damping system consisting of an L-shaped ring 7, a secondary torsional vibration damping rubber ring 6, a driven disc 11, a fan hub disc 12 and a fan 13 can absorb energy of torsional vibration input by the crankshaft of the engine, the vibration damping effect is realized, compared with a single-stage torsional vibration damper, the damping effect of the system is greatly improved, the rigidity of the hub can be reduced by adding the torsional vibration damper in the hub of the fan, the natural frequency of the fan and the hub assembly is reduced, the frequency of the main order of the crankshaft is avoided, and resonance is avoided.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The utility model provides an engine cooling fan with doublestage parallel torsional damper, includes input shaft (1), initiative dish (2), driven plate (11), fan hub disc (12), and fan hub disc (12) are embedded to have fan (13) that plastic materials made, fan (13) are in the same place with fan hub disc (12) are fixed, its characterized in that during injection moulding:
the novel high-speed vibration damper comprises a driving disc (2), an input shaft (1), a groove-shaped ring (3), a plurality of first-stage torsion vibration damper rubber blocks (4), a first-stage inertia mass ring (5), a second-stage torsion vibration damper rubber ring (6), an L-shaped ring (7), a plurality of bolts (8) and a plurality of screws (9), wherein the driving disc (2) is fixedly connected with the input shaft (1) through the bolts (8), the groove-shaped ring (3) is fixedly connected with the driving disc (2) through the screws (9), the first-stage inertia mass ring (5) is arranged in the groove-shaped ring (3), the first-stage torsion damper rubber blocks (4) are uniformly distributed in the groove-shaped ring (3) along the circumferential direction, one side of each first-stage torsion damper rubber block (4) is bonded with the inner wall of an outer ring (34) of the groove-shaped ring (3) through vulcanization, and the other side of each first-stage inertia mass ring (5) is uniformly provided with a plurality of grooves (31) for positioning each first-stage torsion damper rubber block (4) along the circumferential direction; the center hole of L type ring (7) passes through interference fit and inner ring (32) assembly connection of groove ring (3), second grade torsion damping rubber ring (6) are in axial one side and L type ring (7) vulcanization bonding, opposite side and driven plate (11) are connected, driven plate (11) pass through bolt fixed connection with fan hub disc (12), just driven plate (11) and the outer peripheral wall of outer loop (34) of groove ring (3) between be equipped with friction ring (10) that coefficient of friction is less than 0.1.
2. The engine cooling fan with a dual-stage parallel torsional vibration damper of claim 1, wherein: the friction ring (10) is made of Teflon material.
3. The engine cooling fan with a dual-stage parallel torsional vibration damper of claim 1, wherein: and a plurality of holes (71) are uniformly formed in a side ring surface (72) at the side part of the L-shaped ring (7), and the secondary torsional vibration damping rubber ring (6) is vulcanized and bonded on the side ring surface (72) and is filled with the holes (71) to form a plurality of bulges (62) for increasing the shearing bonding force of the secondary torsional vibration damping rubber ring (6).
4. The engine cooling fan with a dual-stage parallel torsional vibration damper of claim 1, wherein: the secondary torsional vibration damping rubber ring (6) is provided with a supporting convex ring (61), and the secondary torsional vibration damping rubber ring (6) is bonded with the inner circular surface of the driven disc (11) through the supporting convex ring (61) to realize connection.
5. The engine cooling fan with a dual-stage parallel torsional vibration damper of claim 1, wherein: the end face of the inner ring (32) is provided with a plurality of through holes (33) which are used for connecting the driving disc (2) along the circumferential direction.
6. The engine cooling fan with a dual-stage parallel torsional vibration damper of claim 1, wherein: the middle part of the driving disc (2) is provided with a plurality of bolt holes which are connected with the input shaft (1) through bolts (8), and a plurality of threaded holes which are connected with the groove-shaped ring (3) through bolts (9).
7. The engine cooling fan with a dual-stage parallel torsional vibration damper of claim 1, wherein: the outer edge of the driving disc (2) is provided with an annular surface (22) in an extending mode, and the annular surface is used for preventing damage caused by falling of parts and other parts due to degumming of the secondary torsion damping rubber ring (6).
8. The engine cooling fan with a dual-stage parallel torsional vibration damper of claim 1, wherein: the two side surfaces of the primary torsional vibration damping rubber block (4) along the axial direction of the groove-shaped ring (3) are inner concave surfaces, and the contour line of the inner concave surfaces is adjusted according to the required inherent frequency or rigidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204661.4A CN108412599B (en) | 2018-03-13 | 2018-03-13 | Engine cooling fan with two-stage parallel torsional damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204661.4A CN108412599B (en) | 2018-03-13 | 2018-03-13 | Engine cooling fan with two-stage parallel torsional damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108412599A CN108412599A (en) | 2018-08-17 |
| CN108412599B true CN108412599B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810204661.4A Active CN108412599B (en) | 2018-03-13 | 2018-03-13 | Engine cooling fan with two-stage parallel torsional damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108412599B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032249A (en) * | 2020-08-05 | 2020-12-04 | 华东交通大学 | Novel automobile transmission shaft rubber torsional damper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2425541A1 (en) * | 1978-05-12 | 1979-12-07 | Chausson Usines Sa | Antivibration mounting for engine cooling fan - has rubber sleeve and rings on tube on end of crankshaft extension |
| JP2004144253A (en) * | 2002-10-28 | 2004-05-20 | Nok Corp | Torque fluctuation absorbing damper |
| JP2004286077A (en) * | 2003-03-20 | 2004-10-14 | Nok Corp | Torque fluctuation absorbing damper |
| CN205225877U (en) * | 2015-12-16 | 2016-05-11 | 广西玉柴机器股份有限公司 | Integrated form engine damping fan |
| CN208010455U (en) * | 2018-03-13 | 2018-10-26 | 华南理工大学 | A kind of cooling fan of engine with the parallel torsional vibration damper of twin-stage |
-
2018
- 2018-03-13 CN CN201810204661.4A patent/CN108412599B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2425541A1 (en) * | 1978-05-12 | 1979-12-07 | Chausson Usines Sa | Antivibration mounting for engine cooling fan - has rubber sleeve and rings on tube on end of crankshaft extension |
| JP2004144253A (en) * | 2002-10-28 | 2004-05-20 | Nok Corp | Torque fluctuation absorbing damper |
| JP2004286077A (en) * | 2003-03-20 | 2004-10-14 | Nok Corp | Torque fluctuation absorbing damper |
| CN205225877U (en) * | 2015-12-16 | 2016-05-11 | 广西玉柴机器股份有限公司 | Integrated form engine damping fan |
| CN208010455U (en) * | 2018-03-13 | 2018-10-26 | 华南理工大学 | A kind of cooling fan of engine with the parallel torsional vibration damper of twin-stage |
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| Publication number | Publication date |
|---|---|
| CN108412599A (en) | 2018-08-17 |
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