CN111237388A - Transmission shaft structure and vehicle - Google Patents
Transmission shaft structure and vehicle Download PDFInfo
- Publication number
- CN111237388A CN111237388A CN201811444927.9A CN201811444927A CN111237388A CN 111237388 A CN111237388 A CN 111237388A CN 201811444927 A CN201811444927 A CN 201811444927A CN 111237388 A CN111237388 A CN 111237388A
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- transmission shaft
- mass block
- shaft structure
- mass
- structure according
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Classifications
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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
- F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
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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
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/04—Frequency effects
-
- 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
- F16F2232/00—Nature of movement
- F16F2232/02—Rotary
Abstract
The invention provides a transmission shaft structure and a vehicle, the transmission shaft structure comprises a transmission shaft body, and further comprises a mass distribution adjusting mechanism arranged on the transmission shaft body, wherein the mass distribution adjusting mechanism is provided with a mechanism base body constructed with a guide sliding part, a mass block arranged on the mechanism base body and configured to be guided by the guide sliding part to slide along the radial direction of the transmission shaft body, and a driving control part fixedly arranged relative to the mechanism base body and arranged corresponding to the mass block, and the driving control part can form acting force applied on the mass block to drive the mass block to slide due to receiving an external control signal. The transmission shaft structure can effectively avoid resonance of the transmission shaft in use, and can improve the NVH performance of a vehicle using the transmission shaft.
Description
Technical Field
The invention relates to the technical field of transmission, in particular to a transmission shaft structure. Meanwhile, the invention also relates to a vehicle applying the transmission shaft structure.
Background
With the improvement of automobile technology and the improvement of living standard of people, the requirements of people on automobile dynamic property and riding comfort are higher and higher, and good NVH performance is always the target of people.
The transmission shaft is used as one of main transmission parts of the rear-drive vehicle, the transmission shaft rotates at a high speed in the driving process of the vehicle, when the rotation frequency of the transmission shaft is consistent with the inherent modal frequency of the transmission shaft, the transmission shaft can resonate, the vibration of the whole vehicle is further increased, the transmission shaft can be fatigued and damaged in serious conditions, traffic accidents are caused, and even unreasonable consequences are caused. Therefore, how to effectively prevent the transmission shaft from generating resonance motion becomes an effective means for improving the NVH performance, but the prior art does not have a structure for preventing resonance when the transmission shaft rotates.
Disclosure of Invention
In view of the above, the present invention is directed to a transmission shaft structure, which can effectively prevent the transmission shaft from resonance in the using process.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a transmission shaft structure, includes the transmission shaft body, still including locating the last quality distribution adjustment mechanism of transmission shaft body, just quality distribution adjustment mechanism has:
a mechanism base body on which a slide guide is configured;
the mass block is arranged on the mechanism base body and is configured to have sliding along the radial direction of the transmission shaft body under the guidance of the guide and slide part;
and the driving control part is fixedly arranged relative to the mechanism base body and is arranged corresponding to the mass block, and the driving control part can form acting force applied to the mass block to drive the mass block to slide due to the fact that the driving control part is connected with an external control signal.
Further, the mass block is made of a ferrous material, and the driving control part is an excitation coil unit.
Further, the two excitation coil units are respectively arranged at two ends of the mass block in the sliding direction.
Further, the guide sliding part is a guide groove, and the mass block is arranged in the guide groove in a sliding mode.
Furthermore, the transmission shaft body comprises an outer ring, an inner ring positioned in the outer ring, and a plurality of connecting plates connected between the outer ring and the inner ring, and the mass distribution adjusting mechanism is arranged between the outer ring and the inner ring.
Further, the mass distribution adjusting mechanism is a plurality of circumferentially spaced rings around the transmission shaft body.
Further, each mass distribution adjusting mechanism is arranged around the transmission shaft body uniformly in the circumferential direction.
Further, the mechanism base body is composed of the transmission shaft body.
Further, the transmission shaft body is made of a non-ferrous material.
Further, the transmission shaft body is made of a polyurethane glass fiber composite material.
Compared with the prior art, the invention has the following advantages:
according to the transmission shaft structure, the mass block is arranged in a sliding mode, the driving control part can drive the mass block to slide, the rotating frequency of the transmission shaft can be consistent with the natural modal frequency of the transmission shaft in the rotating process when the transmission shaft is used, and when resonance is likely to occur, the mass block is driven to slide, so that the natural frequency of the transmission shaft is changed, and therefore the transmission shaft can be effectively prevented from resonance.
In addition, in the transmission shaft structure, the mass block is an iron block, the drive control part adopts the excitation coil, and the transmission shaft structure is simple in structure, easy to design and manufacture and convenient to control. The guide sliding part is designed into a guide groove, and the sliding arrangement of the mass block can be facilitated. The mass distribution adjusting mechanism is positioned inside the transmission shaft, the installation of the transmission shaft on the vehicle can not be influenced, the mass distribution adjusting mechanism is a plurality of the mass distribution adjusting mechanisms arranged at intervals in the axial direction of the ring, and the transmission shaft is made of nonferrous materials, so that the sliding control effect on the mass block can be ensured.
The invention also provides a vehicle, and the transmission shaft structure is applied to the vehicle.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment 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 structural diagram of a transmission shaft structure according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a mass distribution adjusting mechanism according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a mass according to a first embodiment of the present invention;
description of reference numerals:
1-a transmission shaft body, 2-an outer ring magnet exciting coil unit, 3-an inner ring magnet exciting coil unit, 4-a mass block, 5-a mechanism base body and 6-a guide groove;
101-outer ring, 102-inner ring, 103-connecting plate;
401-lugs;
501-frame, 502-brace.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
The embodiment relates to a transmission shaft structure, which integrally comprises a transmission shaft body and a mass distribution adjusting mechanism arranged on the transmission shaft body, wherein the mass distribution adjusting mechanism is provided with a mechanism base body with a guide sliding part, a mass block which is arranged on the mechanism base body and is configured to slide along the radial direction of the transmission shaft body under the guidance of the guide sliding part, and a drive control part which is fixedly arranged relative to the mechanism base body and is arranged corresponding to the mass block, and the drive control part can also form acting force applied to the mass block to drive the mass block to slide due to receiving an external control signal.
Based on the above integral structure, it should be noted that the transmission shaft structure of the present embodiment is generally applied to a rear-drive vehicle to serve as one of main transmission components of the vehicle, and the transmission shaft structure of the present embodiment is provided with the above integral structure, so as to prevent the transmission shaft from resonating during the rotation process, thereby avoiding the resonance of the transmission shaft from bringing adverse effects to the driving and riding of the vehicle.
Of course, the transmission shaft structure of the present embodiment can be applied to other devices that require a transmission shaft structure to transmit power and control the vibration of the transmission shaft, besides being one of the components on the vehicle. When the transmission shaft structure of the present embodiment is used in other devices, the specific structure, use, and the like of the transmission shaft structure are the same as those described below in the present embodiment, and the inventors will not describe the structure again.
In the present embodiment, an exemplary structure of the propeller shaft structure as described above in its entirety is shown in fig. 1 and fig. 2, and at this time, as a preferred structural form, the propeller shaft body 1 constituting the main structure of the propeller shaft of the present embodiment specifically includes an outer ring 101, an inner ring 102 located in the outer ring 101, and a plurality of connecting plates 103 connected between the outer ring 101 and the inner ring 102. Meanwhile, the mass distribution adjusting mechanism is located between the outer ring 101 and the inner ring 102 and is disposed inside the transmission shaft body 1.
Wherein, for the result of use of guaranteeing the mass distribution adjustment mechanism, the inside mass distribution adjustment mechanism of transmission shaft body 1 also is a plurality of that ring transmission shaft body 1's circumference interval arranged for this embodiment, and each preferred mass distribution adjustment mechanism also should be ring transmission shaft body 1's circumference evenly arranged. At this time, the mass distribution adjusting mechanisms may be specifically provided as four, for example, which are uniformly distributed, and in order to facilitate the arrangement of each mass distribution adjusting mechanism, the connecting plates 103 for connecting the outer ring 101 and the inner ring 102 may be divided into two into one group, and four groups may be provided corresponding to the four mass distribution adjusting mechanisms, whereby each mass distribution adjusting mechanism may be provided between the two connecting plates 103 of the corresponding group.
In the present embodiment, for each component of the mass distribution adjusting mechanism, the mass block 4 is made of ferrous material, and the driving control part can be designed as the excitation coil unit. At the same time, the mechanism base 5 for forming the aforementioned slide guide and for sliding the mass 4 is formed in particular by an outer frame 501 and a support plate 502 fastened in the frame 501. The overall shape of the frame 501 is consistent with the cross-sectional shape of the space sandwiched by the two connecting plates 103 for accommodating the mass distribution adjusting mechanism, so that the mass distribution adjusting mechanism can be reliably mounted in the transmission shaft body 1. The two support plates 502 are respectively arranged on two sides, the guide and slide part is a guide groove 6 formed between the two support plates 502, and meanwhile, the mass block 4 is also embedded in the guide groove 6 in a sliding manner and can slide along the guide groove 6.
In order to ensure the driving effect on the mass block 4, the two excitation coil units constituting the driving control portion of the present embodiment are also respectively arranged at two ends of the mass block 4 in the sliding direction, and for convenience of description, the excitation coil units at two ends may be respectively referred to as an outer ring excitation coil unit 2 and an inner ring excitation coil unit 3 according to the distance relationship with the outer ring 101 or the inner ring 102. The outer ring field coil unit 2 and the inner ring field coil unit 3 may be implemented by using an existing field coil structure, and after being disposed on the transmission shaft body 1, they may be electrically connected to an external control power source, such as a vehicle controller, through a wire and a brush structure.
Of course, in addition to using the iron mass block 4 and setting the two excitation coil units, in this embodiment, the mass block 4 may also be set to have a structure with magnetism and a constant magnetic pole direction, and at this time, the excitation coil unit may be set to be only one residing at one end thereof, and the magnetism of the magnetic field generated by the excitation coil unit may be changed by controlling the current in the excitation coil unit, so as to realize the attraction or repulsion driving of the mass block 4.
In addition, as a possible embodiment for the sliding arrangement of the mass block 4, as shown in fig. 3, for example, lugs 401 having grooves may be respectively provided on two opposite sides of the mass block 4, and the grooves at the respective side lugs 401 are fitted on the support plates 502 on the corresponding sides, thereby guiding the sliding of the mass block 4.
In this embodiment, because of the excitation coil structure adopted by the drive control portion, in order to ensure the drive control effect on the mass block 4, the drive shaft body 1 is preferably made of a non-ferrous material, and the non-ferrous material may be, for example, a polyurethane glass fiber composite material, so that the forming of the drive shaft body 1 is facilitated, and meanwhile, the good structural strength, rigidity and toughness of the whole drive shaft can be ensured. Of course, the transmission shaft body 1 may be made of an alloy having good physical properties, other than the polyurethane-glass fiber composite material, and it is also possible to make the transmission shaft body 1 still iron, other than using a non-iron material.
Note that, in this embodiment, in addition to the above-described structure including the frame 501 and the stay 502, the mechanism base 5 may be formed of the propeller shaft body 1 itself. In this case, the outer ring 101 and a part of the inner ring 102, and each set of connecting plates 103 form a so-called "base" of the mass distribution adjusting mechanism, and the above-mentioned guide groove 6 can be formed by enclosing two connecting plates 103 of each set, and the lugs 401 on both sides of the mass 4 slide along the connecting plates 103 on both sides, and the depth of the grooves on the lugs 401 is also adapted according to the parallel or intersecting shape between the connecting plates 103 on both sides, so as to ensure that the mass 4 can slide back and forth in the radial space between the outer ring 101 and the inner ring 102.
Corresponding to the transmission shaft body 1 constituting the mechanism base 5, the outer ring field coil unit 2 and the inner ring field coil unit 3 may be respectively and fixedly disposed in the outer ring 101 and the inner ring 102, and the two field coil structures are still electrically connected to an external control power source by using a conducting wire and a brush structure.
In addition to disposing the mass distribution adjusting mechanism inside the transmission shaft body 1, it is also possible to select to dispose the mass distribution adjusting mechanism outside the transmission shaft body 1 in this embodiment, and as a feasible manner, for example, the mechanism base 5 may be fixedly connected to the outer circumferential surface of the outer ring 101, so as to dispose the mass distribution adjusting mechanism outside the transmission shaft body 1. However, providing the mass distribution adjusting mechanism to the outside may affect the arrangement of the propeller shaft on the vehicle, and therefore this approach is not suitable.
Before the transmission shaft structure is used, the natural modal frequency of the transmission shaft can be obtained according to simulation calculation, and then a vehicle speed interval which may cause the rotation frequency of the transmission shaft to be consistent with the fixed modal frequency of the transmission shaft can be obtained according to the natural modal frequency, the vehicle transmission ratio, the tire circumference and other parameters. Therefore, when the transmission shaft is used along with a vehicle, when the vehicle speed enters the vehicle speed interval, the inner ring magnet exciting coil unit 3 is controlled to be electrified so as to attract the mass block 4 to slide in the radial direction. Because the natural modal frequency of the transmission shaft is mainly related to the rigidity and the mass distribution of the transmission shaft, the mass distribution of the transmission shaft is changed through the movement of the mass block 4, the rotating frequency of the transmission shaft can be prevented from being consistent with the natural modal frequency of the transmission shaft, and further resonance can be prevented from occurring, so that the comfort and the safety of vehicle driving are ensured.
And after the vehicle speed leaves the vehicle speed interval, the inner ring excitation coil unit 3 is controlled to be powered off, the outer ring excitation coil unit 2 is powered on, and the mass block 4 can slide to return under the attraction of the outer ring excitation coil unit 2 and the centrifugal force action of the mass block 4.
Example two
The present embodiment relates to a vehicle, and the transmission shaft structure as described in the first embodiment is applied to the vehicle. The vehicle of the embodiment can avoid the resonance of the transmission shaft in use by adopting the transmission shaft structure in the first embodiment, can improve the NVH performance of the vehicle using the transmission shaft, and has good practicability.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a transmission shaft structure, includes transmission shaft body (1), its characterized in that: still including locating the mass distribution adjustment mechanism on transmission shaft body (1), just mass distribution adjustment mechanism has:
a mechanism base body (5), wherein a guide sliding part is formed on the mechanism base body (5);
the mass block (4) is arranged on the mechanism base body (5) and is configured to be guided by the guide and slide part so as to have the function of sliding along the radial direction of the transmission shaft body (1);
and the driving control part is fixedly arranged relative to the mechanism base body (5) and is arranged corresponding to the mass block (4), and the driving control part can form acting force which is applied to the mass block (4) to drive the mass block (4) to slide due to the fact that the driving control part is received by an external control signal.
2. The propeller shaft structure according to claim 1, wherein: the mass block (4) is made of a ferrous material, the drive control part is an excitation coil unit, and the excitation coil unit is two arranged at two ends of the mass block (4) in the sliding direction respectively.
3. The propeller shaft structure according to claim 1, wherein: the guide sliding part is a guide groove (6), and the mass block (4) is arranged in the guide groove (6) in a sliding mode.
4. The propeller shaft structure according to any one of claims 1 to 3, wherein: the transmission shaft body (1) comprises an outer ring (101), an inner ring (102) located in the outer ring (101), and a plurality of connecting plates (103) connected between the outer ring (101) and the inner ring (102), and the mass distribution adjusting mechanism is arranged between the outer ring (101) and the inner ring (102).
5. The propeller shaft structure according to claim 4, wherein: the mass distribution adjusting mechanisms are arranged in a plurality of circumferential intervals around the transmission shaft body (1).
6. The propeller shaft structure according to claim 5, wherein: the mass distribution adjusting mechanisms are uniformly arranged around the circumference of the transmission shaft body (1).
7. The propeller shaft structure according to claim 4, wherein: the mechanism base body (5) is composed of the transmission shaft body (1).
8. The propeller shaft structure according to claim 4, wherein: the transmission shaft body (1) is made of nonferrous materials.
9. The propeller shaft structure according to claim 8, wherein: the transmission shaft body (1) is made of a polyurethane glass fiber composite material.
10. A vehicle, characterized in that: a propeller shaft structure according to any one of claims 1 to 9 applied to the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811444927.9A CN111237388B (en) | 2018-11-29 | 2018-11-29 | Transmission shaft structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811444927.9A CN111237388B (en) | 2018-11-29 | 2018-11-29 | Transmission shaft structure and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111237388A true CN111237388A (en) | 2020-06-05 |
| CN111237388B CN111237388B (en) | 2022-01-04 |
Family
ID=70879263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811444927.9A Active CN111237388B (en) | 2018-11-29 | 2018-11-29 | Transmission shaft structure and vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN111237388B (en) |
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| CN108443320A (en) * | 2018-04-02 | 2018-08-24 | 江苏理工学院 | A kind of variation rigidity radial permanent magnet bearing |
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| Publication number | Publication date |
|---|---|
| CN111237388B (en) | 2022-01-04 |
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