CN205207538U - Dual mass flywheel based on cam mechanism - Google Patents
Dual mass flywheel based on cam mechanism Download PDFInfo
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- CN205207538U CN205207538U CN201521027716.7U CN201521027716U CN205207538U CN 205207538 U CN205207538 U CN 205207538U CN 201521027716 U CN201521027716 U CN 201521027716U CN 205207538 U CN205207538 U CN 205207538U
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- mass flywheel
- cam follower
- cam
- center
- spring
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Abstract
The utility model discloses a dual mass flywheel based on cam mechanism, include a mass flywheel, the 2nd mass flywheel and reverse damping mechanism, reverse damping mechanism and lie in the installation cavity between a mass flywheel and the 2nd mass flywheel. Reversing damping mechanism and including elasticity return component group and cam rotor, elasticity return component group includes spring sleeve, straight spring, gyro wheel, return mechanism, connecting piece and linear guide, and straight spring one end stretches into the one end of spring sleeve, and the other end is connected with a mass flywheel, and the other end of spring sleeve is equipped with the gyro wheel, and the gyro wheel can roll on return mechanism, and return mechanism fixes the outer wall at cam rotor, two linear guide set up in spring sleeve both sides for the spring sleeve slides along linear guide, and linear guide fixes on the connecting piece, and the connecting piece is fixed on a mass flywheel. The utility model provides an engine be in under idling operating mode or the high -speed operating mode that operates dual mass flywheel twist reverse damping effect variation to and long arc spring's wear problem.
Description
Technical field
The utility model relates to mechanical transmission fields, is specifically related to a kind of double mass flywheel based on cam mechanism.
Background technique
In car transmissions, usually use double mass flywheel to realize torsion damping function, such as, between the engine and the gearbox double mass flywheel is installed.
In some machine driven systems, double mass flywheel also can be used to realize torsion damping function.
Double mass flywheel forms primarily of three parts: be arranged at first mass flywheel of power source as motor side, be arranged at the second mass flywheel of speed change gear such as automotive transmission side, and first torsion damping mechanism between mass flywheel and the second mass flywheel, torsional vibration damper is generally configured to make double mass flywheel have the long arc shape form of springs of large corner.
The long arc shape spring double mass flywheel structure of LUK company of Germany be at present the product of double mass flywheel maturation.Compress arc spring when double mass flywheel first mass flywheel is rotated by power source such as engine-driving, driven the second mass flywheel by the arc spring compressed, thus the moment of torsion of motor is delivered to the second mass flywheel.The arranging of this double mass flywheel can reduce the natural frequency of power source as motor and speed changer vibration system, to avoid producing resonance when idle, and improves the vibration under nominal situation.At present, many researchers all study, improve the double mass flywheel of similar structure, such as the Ph.D. Dissertation of Wuhan University of Technology Zhao light in 2013.
But power source is if motor is under High Rotation Speed operating mode, and double mass flywheel High Rotation Speed, is crushed on the guiding groove of the first mass flywheel due to the effect of centrifugal force by the long arc shape elastic element of the transmitting torque by compressing in double mass flywheel.Double mass flywheel rotating speed is higher, and the centrifugal force that long arc shape spring is subject to is larger, and it is got rid of the impacting force be pressed on guiding groove and the surface friction drag be therefore subject to is also larger.This causes long arc shape elastic element not to be further compressed, thus loses torsion damping effect, and system vibration noise is large.And the manufacture of long arc shape spring is also much more difficult than straight spring.
Chinese patent 201310608654.8, discloses a kind of double mass flywheel, has done improvement to the long arc shape spring structure of LUK company.For being arranged in series two torsional vibration dampers between two quality of double mass flywheel, external damper torsional stiffness is greater than internal vibration dampers, and during torsion, the internal vibration dampers that the external damper band dynamic stiffness that rigidity is larger is less reverses.Owing to have employed long arc shape spring, this double mass flywheel is still faced with and problem like LUK company long arc shape spring-like.
" noise and vibration control " periodical " Review Study of double mass flywheel (DMF) " describes the type of double mass flywheel, and radial double mass flywheel wherein refers to spring radial direction or is similar to the structural type of radial arrangement.Adopt spring housing's mounting spring between first mass flywheel and the second mass flywheel, although this scheme solve long arc shape spring in high-speed rotation with the friction problem of other parts, its mechanism's relative complex.
Summary of the invention
The purpose of this utility model is to provide a kind of double mass flywheel based on cam mechanism, solves motor and is in idling operation or under the operating mode that runs up, the torsion damping deleterious of double mass flywheel, and the wear problem of long arc shape spring.
The technical solution realizing the utility model object is: a kind of double mass flywheel based on cam mechanism, comprise the first mass flywheel and the second mass flywheel that be arranged in parallel, cavity between first mass flywheel and the second mass flywheel is installation cavity, also comprise torsion damping mechanism, in the installation cavity of torsion damping mechanism between the first mass flywheel and the second mass flywheel.
Described torsion damping mechanism comprises elastic recoil element group and cam follower, cam follower is fixed on the center of the second mass flywheel, several elastic recoil element groups are evenly distributed on around cam follower, and be connected with cam follower, each elastic recoil element group comprises spring spool, straight spring, roller, return mechanism, two links and two linear rails, straight spring is disposed radially, straight spring one end stretches into one end of spring spool, the other end is connected with the first mass flywheel, the other end of spring spool is provided with roller, roller rolls on return mechanism, return mechanism is fixed on cam follower outer wall, two linear rails are arranged on spring spool both sides, and make spring spool linearly slide, linear rail is separately fixed on link, and link is fixed on the first mass flywheel.
Further, described cam follower is triangle, and three sides of a triangle are circular arc, and the center of radius of curvature is towards cam follower center.
Further, above-mentioned elastic recoil element group is three groups, and return mechanism is arc, and the center of its centre of radius and cam follower is reverse, and the circular arc limit of return mechanism and cam follower is connected.
Further, the circular arc limit of described return mechanism and cam follower
middle partbe connected.
Further, also comprise three fixing pins, fixing pin is evenly distributed on the second mass flywheel, and when the relative rotation of the first mass flywheel and the second mass flywheel is 50 °-65 °, fixing pin contacts with link.
Further, described link is hollow member, towards the side at cam follower center without baffle plate, the height of fixing pin is lower than link height, when the relative rotation of the first mass flywheel and the second mass flywheel is 50 °-65 °, fixing pin proceeds to the cavity of link, encounters the sidewall of link, limits relatively rotating of the first mass flywheel and the second mass flywheel.
Further, also comprise cam follower spider, a shaft support bearing, bearing and center pad, cam follower spider is arranged on the center of cam follower, bearing is provided with between cam follower spider and cam follower, one shaft support bearing is arranged on cam follower spider center, cam follower spider is provided with center pad near the end face of the second mass flywheel, and cam follower spider and center pad are fixed on the first mass flywheel.
Further, also comprise Cam gasket, Cam gasket is arranged between cam follower and the second mass flywheel.
Compared with prior art, its remarkable advantage is the utility model: (1), owing to adding torsion damping mechanism, when power source is as under motor is in various operating mode, can both obtain better torsion damping effect.
(2) adopt the convenient manufacture of straight spring, and extend working life.
(3) corner torque is non-linear relation, i.e. non-linear rigidity, is Low rigidity during little torsion angle, is high rigidity, more meets the demand of system of vehicle transmission vibration isolation during large windup-degree.
(4) friction caused because centrifugal force causes the distortion of long arc shape spring under avoiding High Rotation Speed operating mode, wearing and tearing.
Accompanying drawing explanation
Fig. 1 is the shaft side figure (having concealed the first mass flywheel in figure) observed from engine end of the double mass flywheel based on cam mechanism of the present utility model.
Fig. 2 is the shaft side figure (having concealed the second mass flywheel in figure) observed from speed changer end of the double mass flywheel based on cam mechanism of the present utility model.
Fig. 3 is the sectional view of the double mass flywheel based on cam mechanism of the present utility model.
Fig. 4 is the link schematic diagram of the double mass flywheel based on cam mechanism of the present utility model.
Fig. 5 is the partial schematic diagram of the elastic recoil element group of the double mass flywheel based on cam mechanism of the present utility model.
Fig. 6 is cam follower and the return mechanism schematic diagram of the double mass flywheel based on cam mechanism of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Composition graphs 1-Fig. 6, a kind of double mass flywheel based on cam mechanism, comprise the first mass flywheel 1 and the second mass flywheel 17 be arranged in parallel, cavity between first mass flywheel 1 and the second mass flywheel 17 is installation cavity, also comprise torsion damping mechanism, in the installation cavity of torsion damping mechanism between the first mass flywheel 1 and the second mass flywheel 17.
Described torsion damping mechanism comprises elastic recoil element group and cam follower 18, cam follower 18 is fixed on the center of the second mass flywheel 17, several elastic recoil element groups are evenly distributed on around cam follower 18, and be connected with cam follower 18, elastic recoil element group comprises spring spool 3, straight spring 4, roller 7, return mechanism 5, two links 2 and two linear rails 6, straight spring 4 is disposed radially, one end of spring spool 3 is stretched in straight spring 4 one end, the other end is connected with the first mass flywheel 1, the other end of spring spool 3 is provided with roller 7, roller 7 can roll on return mechanism 5, return mechanism 5 is fixed on cam follower 18 outer wall, two linear rails 6 are arranged on spring spool 3 both sides, make spring spool 3 linearly guide rail 6 slide, linear rail 6 is fixed on link 2, and link 2 is fixed on the first mass flywheel 1.
Further, described cam follower 18 is triangle, and three sides of a triangle are circular arc, and the center of radius of curvature is towards cam follower 18 center.
Further, above-mentioned elastic recoil element group is three groups, and return mechanism 5 is arc, and the center of its centre of radius and cam follower 18 is reverse, and return mechanism 5 is connected with the circular arc limit of cam follower 18.
Further, described return mechanism 5 is connected with the middle part on the circular arc limit of cam follower 18.
Further, also comprise three fixing pins 16, fixing pin 16 is evenly distributed on the second mass flywheel 17, and when the relative rotation of the first mass flywheel 1 and the second mass flywheel 17 is 50 °-65 °, fixing pin 16 contacts with link 2.
Further, described link 2 is hollow member, towards the side at cam follower 18 center, without baffle plate, the height of fixing pin 16 is lower than link 2 height, and when the relative rotation of the first mass flywheel 1 and the second mass flywheel 17 is 50 °-65 °, fixing pin 16 proceeds to the cavity of link 2, encounter the sidewall of link 2, limit relatively rotating of the first mass flywheel 1 and the second mass flywheel 17.
Further, also comprise cam follower spider 22, shaft support bearing 11, bearing 20 and center pad 10, cam follower spider 22 is arranged on the center of cam follower 18, bearing 20 is provided with between cam follower spider 22 and cam follower 18, one shaft support bearing 11 is arranged on cam follower spider 22 center, cam follower spider 22 is provided with center pad 10 near the end face of the second mass flywheel 17, and cam follower spider 22 and center pad 10 are fixed on the first mass flywheel 1.
Further, also comprise Cam gasket 8, Cam gasket 8 is arranged between cam follower 18 and the second mass flywheel 17.
Embodiment 1
To be arranged between the motor of automobile and speed changer, realize reducing motor, transmission system torsional vibration natural frequency and avoid producing when idling speed the function of resonance, and realize the function of vibration damping at automobile running working condition.
Composition graphs 1-Fig. 6, a kind of double mass flywheel based on cam mechanism, comprise the first mass flywheel 1 and the second mass flywheel 17 be arranged in parallel, cavity between first mass flywheel 1 and the second mass flywheel 17 is installation cavity, also comprise torsion damping mechanism, in the installation cavity of torsion damping mechanism between the first mass flywheel 1 and the second mass flywheel 17.First mass flywheel 1 is connected with power source motor car engine output shaft, i.e. active flywheel, and the second mass flywheel 17 is connected with automobile clutch, i.e. driven flywheel 17.
Described torsion damping mechanism comprises elastic recoil element group and cam follower 18, cam follower 18 is fixed on the center of the second mass flywheel 17 by rivet, three elastic recoil element groups are evenly distributed on around cam follower 18, and be connected with cam follower 18, elastic recoil element group comprises spring spool 3, straight spring 4, roller 7, return mechanism 5, two links 2 and two linear rails 6, straight spring 4 is disposed radially, one end of spring spool 3 is stretched in straight spring 4 one end, and the other end is connected by directional post 23 and the first mass flywheel 1.The other end of spring spool 3 is connected with roller 7 by bearing pin 28, and one end of pivot pin 28 adopts cotter pin 27 to pin, and avoids pivot pin to come off.Roller 7 can roll on return mechanism 5, and return mechanism 5 is fixed on cam follower 18 outer wall by rivet.Two linear rails 6 are arranged on spring spool 3 both sides, and spring spool 3 is connected by pivot pin 26 slide block with linear rail 6, make spring spool 3 linearly guide rail 6 slide, and retrain straight spring 4 and be only radially out of shape.Linear rail 6 is fixed on link 2 by rivet, and link 2 is fixed on the first mass flywheel 1 by rivet.
Described cam follower 18 is triangle, and three sides of a triangle are circular arc, and the center of radius of curvature is towards cam follower 18 center.
Above-mentioned elastic recoil element group is three groups, and return mechanism 5 is arc, and the center of its centre of radius and cam follower 18 is reverse, and return mechanism 5 is fixed on the middle part on the circular arc limit of cam follower 18.Roller 7 by return mechanism 5 indirectly-acting, is changed its radial position by rolling on cam follower 18, thus also determines the compression stroke of straight spring 4 on cam follower 18.
Also comprise three fixing pins 16, fixing pin 16 is evenly distributed on the second mass flywheel 17, and when the relative rotation of the first mass flywheel 1 and the second mass flywheel 17 is 50 °-65 °, fixing pin 16 contacts with link 2.Described link 2 is hollow member, towards the side at cam follower 18 center without baffle plate, the height of fixing pin 16 is lower than link 2 height, when the relative rotation of the first mass flywheel 1 and the second mass flywheel 17 is 50 °-65 °, fixing pin 16 proceeds to the cavity of link 2, encounter the sidewall of link 2, limit relatively rotating of the first mass flywheel 1 and the second mass flywheel 17.
Also comprise cam follower spider 22, one shaft support bearing 11, bearing 20 and center pad 10, cam follower spider 22 is arranged on the center of cam follower 18, cam follower spider 22 is provided with several crank shaft bolt holes, for being connected with bent axle, bearing 20 is provided with between cam follower spider 22 and cam follower 18, one shaft support bearing 11 is arranged on cam follower spider 22 center, center pad 10 is provided with between cam follower spider 22 and the second mass flywheel 17, the axial position of constraint bearing 20, by rivet, cam follower spider 22 and center pad 10 are fixed on the first mass flywheel 1.
Also comprise Cam gasket 8, Cam gasket 8 is arranged between cam follower 18 and the second mass flywheel 17, the axial position of constraint bearing 20.
Claims (8)
1. the double mass flywheel based on cam mechanism, it is characterized in that: comprise the first mass flywheel (1) and the second mass flywheel (17) that be arranged in parallel, cavity between first mass flywheel (1) and the second mass flywheel (17) is installation cavity, also comprise torsion damping mechanism, torsion damping mechanism is positioned at the installation cavity between the first mass flywheel (1) and the second mass flywheel (17);
Described torsion damping mechanism comprises elastic recoil element group and cam follower (18), cam follower (18) is fixed on the center of the second mass flywheel (17), several elastic recoil element groups are evenly distributed on cam follower (18) around, and be connected with cam follower (18), each elastic recoil element group comprises spring spool (3), straight spring (4), roller (7), return mechanism (5), two links (2) and two linear rails (6), straight spring (4) is disposed radially, one end of spring spool (3) is stretched in straight spring (4) one end, the other end is connected with the first mass flywheel (1), the other end of spring spool (3) is provided with roller (7), roller (7) is in the upper rolling of return mechanism (5), return mechanism (5) is fixed on cam follower (18) outer wall, two linear rails (6) are arranged on spring spool (3) both sides, and make spring spool (3) linearly guide rail (6) slip, linear rail (6) is separately fixed on link (2), and link (2) is fixed on the first mass flywheel (1).
2. the double mass flywheel based on cam mechanism according to claim 1, is characterized in that: described cam follower (18) is triangle, and three sides of a triangle are circular arc, and the center of radius of curvature is towards cam follower (18) center.
3. the double mass flywheel based on cam mechanism according to claim 2, it is characterized in that: above-mentioned elastic recoil element group is three groups, return mechanism (5) is arc, the center of its centre of radius and cam follower (18) is reverse, and return mechanism (5) is connected with the circular arc limit of cam follower (18).
4. the double mass flywheel based on cam mechanism according to claim 3, is characterized in that: described return mechanism (5) is connected with the middle part on the circular arc limit of cam follower (18).
5. the double mass flywheel based on cam mechanism according to claim 2, it is characterized in that: also comprise three fixing pins (16), fixing pin (16) is evenly distributed on the second mass flywheel (17), when the relative rotation of the first mass flywheel (1) and the second mass flywheel (17) is 50 °-65 °, fixing pin (16) contacts with link (2).
6. the double mass flywheel based on cam mechanism according to claim 5, it is characterized in that: described link (2) is hollow member, towards the side at cam follower (18) center without baffle plate, the height of fixing pin (16) lower than link (2) highly, when the relative rotation of the first mass flywheel (1) and the second mass flywheel (17) is 50 °-65 °, fixing pin (16) proceeds to the cavity of link (2), encounter the sidewall of link (2), limit relatively rotating of the first mass flywheel (1) and the second mass flywheel (17).
7. the double mass flywheel based on cam mechanism according to claim 1, it is characterized in that: also comprise cam follower spider (22), one shaft support bearing (11), bearing (20) and center pad (10), cam follower spider (22) is arranged on the center of cam follower (18), bearing (20) is provided with between cam follower spider (22) and cam follower (18), one shaft support bearing (11) is arranged on cam follower spider (22) center, cam follower spider (22) is provided with center pad (10) near the end face of the second mass flywheel (17), cam follower spider (22) and center pad (10) are fixed on the first mass flywheel (1).
8. the double mass flywheel based on cam mechanism according to claim 1, is characterized in that: also comprise Cam gasket (8), and Cam gasket (8) is arranged between cam follower (18) and the second mass flywheel (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027716.7U CN205207538U (en) | 2015-12-11 | 2015-12-11 | Dual mass flywheel based on cam mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027716.7U CN205207538U (en) | 2015-12-11 | 2015-12-11 | Dual mass flywheel based on cam mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207538U true CN205207538U (en) | 2016-05-04 |
Family
ID=55845257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521027716.7U Withdrawn - After Issue CN205207538U (en) | 2015-12-11 | 2015-12-11 | Dual mass flywheel based on cam mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207538U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317925A (en) * | 2015-12-11 | 2016-02-10 | 南京理工大学 | Dual mass flywheel based on cam mechanism |
| CN108119605A (en) * | 2017-12-22 | 2018-06-05 | 宁波宏协股份有限公司 | A kind of double mass flywheel with sliding shoe formula centrifugal pendulum |
| CN115095631A (en) * | 2022-07-11 | 2022-09-23 | 中国核动力研究设计院 | High-rotational-inertia flywheel with guiding and positioning structure |
-
2015
- 2015-12-11 CN CN201521027716.7U patent/CN205207538U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317925A (en) * | 2015-12-11 | 2016-02-10 | 南京理工大学 | Dual mass flywheel based on cam mechanism |
| CN108119605A (en) * | 2017-12-22 | 2018-06-05 | 宁波宏协股份有限公司 | A kind of double mass flywheel with sliding shoe formula centrifugal pendulum |
| CN115095631A (en) * | 2022-07-11 | 2022-09-23 | 中国核动力研究设计院 | High-rotational-inertia flywheel with guiding and positioning structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160504 Effective date of abandoning: 20170929 |
|
| AV01 | Patent right actively abandoned |