CN111927921A - Planetary gear type centrifugal pendulum vibration absorber - Google Patents
Planetary gear type centrifugal pendulum vibration absorber Download PDFInfo
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- CN111927921A CN111927921A CN202010793235.6A CN202010793235A CN111927921A CN 111927921 A CN111927921 A CN 111927921A CN 202010793235 A CN202010793235 A CN 202010793235A CN 111927921 A CN111927921 A CN 111927921A
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- pendulum
- planetary gear
- assembly
- sub
- shaft sleeve
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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
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/1464—Masses connected to driveline by a kinematic mechanism or gear system
- F16F15/1478—Masses connected to driveline by a kinematic mechanism or gear system with a planetary 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)
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Abstract
The invention discloses a planetary gear type centrifugal pendulum absorber, wherein at least one pendulum sub-assembly is arranged on a shaft sleeve plate, planetary gears with the same number as the pendulum sub-assemblies are arranged on the shaft sleeve plate, volute springs are arranged in the planetary gears, outer gears of the planetary gears are meshed with a middle plate gear of the pendulum sub-assembly, and the motion trail of the pendulum sub-assembly is controlled by the motion of the planetary gears. The invention has the advantages that the working track of the pendulum bob of the centrifugal pendulum is limited by utilizing the planetary gear structure, so that the pendulum bob can only work on the track generating the vibration reduction effect, and the generation of knocking abnormal sound is prevented.
Description
Technical Field
The invention relates to a torsional damper of an automobile power assembly system, in particular to a planetary gear type centrifugal pendulum damper.
Background
The centrifugal pendulum vibration absorber is mainly applied to a power assembly system of an automobile, and is usually mounted on a part between an engine and a gearbox, so that the vibration absorbing and noise reducing functions are provided for the automobile.
The existing centrifugal pendulum vibration absorber needs a pendulum bob to freely swing in the process of playing a vibration absorbing effect due to the structural characteristics of the centrifugal pendulum vibration absorber, and if the centrifugal pendulum vibration absorber is well matched with the pendulum bob, the centrifugal pendulum vibration absorber generally has good vibration absorbing performance under the high-speed state of an engine. However, due to the flexible swing of the pendulum, in a working interval with a low rotating speed, such as when an engine starts, and due to factors such as a relatively low centrifugal force and large engine vibration, the pendulum cannot ensure an ideal motion trajectory, and problems such as knocking abnormal sound and poor vibration damping effect due to irregular motion can be caused. Along with the continuous improvement of the requirement on the comfort of the whole vehicle, a more stable and reliable centrifugal pendulum shock absorber needs to be provided to meet the requirement.
Chinese patent (CN 102141113B) discloses a centrifugal pendulum damper, which is implemented by movably connecting a plurality of pendulums to a first disk to realize a centrifugal pendulum function, and because the pendulums and the first disk are not well constrained and positioned, under the conditions of low centrifugal force and high rotational speed fluctuation of the centrifugal pendulum caused by low rotational speed working conditions such as engine starting, flameout, and downhill, the problems of poor damping effect, abnormal sound and the like caused by the fact that the pendulums do not move according to an ideal working trajectory can occur.
This is where the present application needs to be focused on.
Disclosure of Invention
The invention aims to provide a planetary gear type centrifugal pendulum damper to improve the working stability and damping performance of a centrifugal pendulum.
In order to solve the technical problems, the invention provides a planetary gear type centrifugal pendulum absorber, wherein at least one pendulum sub-assembly is arranged on a shaft sleeve plate, planetary gears with the same number as that of the pendulum sub-assemblies are arranged on the shaft sleeve plate, a volute spiral spring is arranged in each planetary gear, an outer gear of each planetary gear is meshed with a middle plate gear of each pendulum sub-assembly, and the motion trail of each pendulum sub-assembly is controlled by the motion of each planetary gear. The pendulum bob can only work on a track generating a vibration reduction effect, and the generation of knocking abnormal sound is prevented.
The pendulum bob sub-assembly is characterized in that an inner flanging, an outer flanging and a volute spring limiting surface are arranged on the volute spring, the outer flanging penetrates through a volute spring mounting hole of the planetary gear, the inner flanging is embedded into a volute spring fixing shaft of the planetary gear, the volute spring is installed in a volute spring mounting groove of the planetary gear, the outer flanging moves in a swing angle space of the planetary gear, and when the pendulum bob sub-assembly moves to a limit position, the volute spring limiting surface is in contact with the planetary gear limiting surface to control the motion track of the pendulum bob sub-assembly.
The planetary gear is also provided with a sliding step and a sliding surface, the sliding step clamps the upper end surface and the lower end surface of the shaft sleeve plate to axially position the planetary gear, and the sliding surface is in contact with the inner hole surface of the semicircular hole of the shaft sleeve plate to generate damping and ensure the normal operation of the planetary gear in the centrifugal pendulum operation; the intermediate plate gear of the pendulum sub-assembly drives the planet gear to move, and the planet gear drives the volute spiral spring to generate extra rigidity and damping in the process of back-and-forth rotation.
The pendulum sub-assembly comprises at least one middle plate and at least one pendulum weight, a mass block and a middle plate gear are arranged on the middle plate, and the mass block adjusts the overall mass of the pendulum sub-assembly according to requirements.
The pendulum sub-assembly is assembled with the shaft sleeve plate through at least one roller, and the rollers respectively penetrate through the shaft sleeve plate and the fixing holes in the pendulum weights.
The shaft sleeve plate is provided with a shaft sleeve plate semicircular hole and a groove, and an outward flange of the volute spiral spring is embedded into the groove for fixing.
The structure of the invention has the following excellent effects:
1) the working track of the pendulum bob of the centrifugal pendulum is limited by utilizing the planetary gear structure, so that the pendulum bob can only work on the track generating the vibration reduction effect, and the generation of knocking abnormal sound is prevented;
2) the scroll spring is utilized to provide extra rigidity and damping for the centrifugal pendulum bob, and a larger optimization space is provided in the whole vehicle matching process;
3) the application is applied to the structures of parts for transferring power, such as a dual-mass flywheel, a clutch, a hydraulic torque converter and the like, reduces the vibration noise of a power assembly, and prolongs the service life of the parts.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of an assembly according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the assembly of FIG. 1 taken along line A-A;
FIG. 3 is a partial schematic view of a pendulum sub-assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a center plate of a pendulum sub-assembly of an embodiment of the present invention;
FIG. 5 is a schematic view of a planetary gear according to an embodiment of the present invention;
FIG. 6 is a schematic view of a wrap spring according to an embodiment of the present invention;
1-a shaft sleeve plate;
101-shaft sleeve plate semicircular hole; 102-a groove;
2-a roller; 3-a weight swing block;
4-a middle plate;
401-rivet holes; 402-a mass;
403-intermediate plate gear;
5-rivet pin;
6-a planetary gear;
601-an outer gear; 602-wrap spring stationary shaft;
603-sliding steps; 604-planetary gear spacing face;
605-scroll spring mounting groove; 606-a sliding surface;
607-swing angle space; 608-volute spring mounting hole;
7-a volute spiral spring;
701-inward flanging; 702-flanging;
703-volute spring stop surface.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic sectional view of an assembly of the present invention, fig. 2 is a schematic sectional view of the assembly of fig. 1 taken along the direction a-a, fig. 3 is a partial schematic sectional view of the assembly of the present invention, fig. 4 is a schematic sectional view of an intermediate plate part of the present invention, fig. 5 is a schematic sectional view of a planetary gear part of the present invention, and fig. 6 is a schematic sectional view of a spiral spring part of the present invention.
As shown in fig. 1 and 2, the planetary gear type centrifugal pendulum vibration absorber includes a shaft sleeve plate 1, a roller 2, pendulum weights 3, an intermediate plate 4, rivet pins 5, a planetary gear 6, and a volute spiral spring 7, in this embodiment, two intermediate plates 4, two pendulum weights 3, and four rivet pins 5 are riveted through rivet holes 401 to form a pendulum sub-assembly, and in this embodiment, four pendulum sub-assemblies form a centrifugal pendulum vibration absorber.
As shown in fig. 3, the pendulum sub-assembly is assembled with a shaft sleeve plate 1 through two rollers 2, and the rollers 2 respectively pass through kidney-shaped holes arranged on the shaft sleeve plate 1 and the pendulum weights 3.
The spiral spring 7 is assembled in the planetary gear 6, and as shown in fig. 6, the spiral spring 7 is provided with an inward flange 701, an outward flange 702 and a spiral spring limit surface 703. As shown in fig. 5, the planetary gear 6 is provided with an external gear 601, a scroll spring fixing shaft 602, a sliding step 603, a planetary gear limiting surface 604, a scroll spring mounting groove 605, a sliding surface 606, a swing angle space 607, a scroll spring mounting hole 608, an outward flange 702 passing through the scroll spring mounting hole 608, an inward flange 701 embedded in the scroll spring fixing shaft 602, and the whole scroll spring 7 is mounted in the scroll spring mounting groove 605.
As shown in fig. 1, a shaft sleeve plate semicircular hole 101 and a groove 102 are formed in a shaft sleeve plate 1, two end faces, namely an upper end face and a lower end face, are arranged in the material thickness direction of the shaft sleeve plate 1, and the distance between the two end faces is the material thickness of the shaft sleeve plate. As shown in fig. 4, the middle plate 4 is provided with a mass 402 and a middle plate gear 403, and the mass 402 adjusts the overall mass of the pendulum sub-assembly according to the requirement. The planetary gear 6 assembled with the volute spiral spring 7 is arranged in the shaft sleeve plate semicircular hole 101, the outward turned edge 702 is embedded into the groove 102 and fixed, the sliding step 603 clamps the upper end face and the lower end face of the shaft sleeve plate 1 to play a role in axial positioning of the planetary gear 6, the sliding surface 606 is in contact with the inner hole surface of the shaft sleeve plate semicircular hole 101 to generate damping and ensure normal work of a planetary gear structure in centrifugal pendulum work, the outer gear 601 on the planetary gear 6 is meshed with the middle plate gear 403, and the pendulum sub-assembly is ensured to have a stable motion track through planetary gear motion. During the motion of the pendulum assembly, the planet gear 6 is driven by the middle plate gear 403, the scroll spring 7 is driven by the planet gear 6 to generate rigidity in the process of back and forth rotation, the outward flange 703 on the scroll spring 7 moves in the swing angle space 607, and when the pendulum assembly moves to the limit position, the scroll spring limiting surface 703 is in contact with the planet gear limiting surface 604 to limit the motion space of the pendulum assembly.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a planetary gear formula centrifugation pendulum shock absorber, is equipped with at least one pendulum sub-assembly on the axle sleeve board, its characterized in that: planetary gears with the same number as the pendulum bob subassemblies are mounted on the shaft sleeve plate, volute spiral springs are mounted in the planetary gears, outer gears of the planetary gears are meshed with gears of a middle plate of the pendulum bob subassemblies, and the motion of the planetary gears controls motion tracks of the pendulum bob subassemblies.
2. The planetary gear centrifugal pendulum absorber of claim 1, wherein: the pendulum bob sub-assembly is characterized in that an inner flanging, an outer flanging and a volute spring limiting surface are arranged on the volute spring, the outer flanging penetrates through a volute spring mounting hole of the planetary gear, the inner flanging is embedded into a volute spring fixing shaft of the planetary gear, the volute spring is installed in a volute spring mounting groove of the planetary gear, the outer flanging moves in a swing angle space of the planetary gear, and when the pendulum bob sub-assembly moves to a limit position, the volute spring limiting surface is in contact with the planetary gear limiting surface to control the motion track of the pendulum bob sub-assembly.
3. The planetary gear centrifugal pendulum absorber according to claim 1 or 2, wherein: the pendulum bob sub-assembly is characterized in that the planetary gear is further provided with a sliding step and a sliding surface, the sliding step clamps the upper end surface and the lower end surface of the shaft sleeve plate to axially position the planetary gear, the sliding surface is in contact with an inner hole surface of a semicircular hole of the shaft sleeve plate, the intermediate plate gear of the pendulum bob sub-assembly drives the planetary gear to move, and the planetary gear drives the volute spiral spring to generate extra rigidity and damping in the process of back-and-forth rotation.
4. The planetary gear centrifugal pendulum absorber of claim 1, wherein: the pendulum sub-assembly comprises at least one middle plate and at least one pendulum weight, a mass block and a middle plate gear are arranged on the middle plate, and the mass block adjusts the overall mass of the pendulum sub-assembly according to requirements.
5. The planetary gear centrifugal pendulum absorber of claim 4, wherein: the pendulum sub-assembly is assembled with the shaft sleeve plate through at least one roller, and the rollers respectively penetrate through the shaft sleeve plate and the fixing holes in the pendulum weights.
6. The planetary gear centrifugal pendulum absorber of claim 1, wherein: the shaft sleeve plate is provided with a shaft sleeve plate semicircular hole and a groove, and an outward flange of the volute spiral spring is embedded into the groove for fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793235.6A CN111927921A (en) | 2020-08-10 | 2020-08-10 | Planetary gear type centrifugal pendulum vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793235.6A CN111927921A (en) | 2020-08-10 | 2020-08-10 | Planetary gear type centrifugal pendulum vibration absorber |
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| Publication Number | Publication Date |
|---|---|
| CN111927921A true CN111927921A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010793235.6A Pending CN111927921A (en) | 2020-08-10 | 2020-08-10 | Planetary gear type centrifugal pendulum vibration absorber |
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| CN (1) | CN111927921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251106A (en) * | 2021-06-24 | 2021-08-13 | 常州数加机械有限公司 | Double-mass flywheel with overload protection function and vehicle |
-
2020
- 2020-08-10 CN CN202010793235.6A patent/CN111927921A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251106A (en) * | 2021-06-24 | 2021-08-13 | 常州数加机械有限公司 | Double-mass flywheel with overload protection function and vehicle |
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