CN112392926A - Multi-stage planet carrier, multi-stage planet combined structure and multi-gear planet mechanism - Google Patents
Multi-stage planet carrier, multi-stage planet combined structure and multi-gear planet mechanism Download PDFInfo
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- CN112392926A CN112392926A CN202011423393.9A CN202011423393A CN112392926A CN 112392926 A CN112392926 A CN 112392926A CN 202011423393 A CN202011423393 A CN 202011423393A CN 112392926 A CN112392926 A CN 112392926A
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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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
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/62—Gearings having three or more central gears
- F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
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Abstract
The invention discloses a multi-stage planet carrier, a multi-stage planet combined structure and a multi-gear planetary mechanism. The multi-stage planet carrier is applied to multi-gear speed change, so that the size is smaller, and the structure is more compact.
Description
Technical Field
The invention relates to the field of transmission, in particular to a multi-stage planet carrier, a multi-stage planet combined structure and a multi-gear planet mechanism.
Background
Planetary mechanisms are widely used in planetary gearboxes, reducers or wheel reducers of vehicle drivelines. The planetary mechanism is a core component of the gearbox, generally comprises a sun gear, a planetary gear set (comprising a planetary gear and a planetary gear shaft), a gear ring, a planetary carrier and the like, is a transmission mechanism with a dynamic axis, realizes power transmission by virtue of a plurality of planetary gears, and has the advantages of small volume, large transmission ratio, compact structure, high efficiency, large bearing capacity, stable transmission and the like;
the planet carrier is one of the main components in the planetary mechanism, is a carrier of the planet wheel and the planet wheel shaft, bears most of the weight of the whole planetary transmission system, and the structural design of the planet carrier has great influence on the structure and transmission of the planetary mechanism. When the speed is changed by using the planetary mechanism, a plurality of planetary mechanisms including a plurality of planetary carriers are often used to perform a multi-speed change, and the structure is complicated and the size is large.
Disclosure of Invention
The invention aims to provide a multi-stage planet carrier which is applied to multi-gear speed change and can be smaller in size and more compact in structure. The invention also provides a multi-stage planet combination structure and a multi-gear planet mechanism applying the multi-stage planet carrier.
The invention discloses a multistage planet carrier, which comprises at least three planet plates and a plurality of connecting parts for connecting each adjacent planet plate, wherein a planet wheel set is arranged between each pair of adjacent planet plates, and each planet plate is provided with an installation part for installing a planet wheel shaft of the corresponding planet wheel set.
In some embodiments, the mounting portions of at least one pair of adjacent planet plates each comprise more than three shaft mounting holes corresponding to the planet shafts of more than three planet wheels, and the axes of the more than three shaft mounting holes are located on the same cylindrical surface and are distributed unevenly along the circumferential direction of the cylindrical surface.
In some embodiments, the three or more axle mounting holes include four axle mounting holes, and the four axle mounting holes are distributed in central symmetry.
In some embodiments, the plurality of planet plates comprises a first planet plate, a second planet plate, a third planet plate and a fourth planet plate which are arranged at intervals in sequence; the first planetary plate and the second planetary plate are respectively provided with a first shaft mounting hole group and a second shaft mounting hole group which are used for mounting two ends of a planetary wheel shaft of the first planetary wheel set, and the first shaft mounting hole group and the second shaft mounting hole group respectively comprise a plurality of corresponding shaft mounting holes; the second planet plate is also provided with a third shaft mounting hole group comprising a plurality of shaft mounting holes, and the plurality of shaft mounting holes of the third shaft mounting hole group and the plurality of shaft mounting holes of the second shaft mounting hole group are arranged in a staggered manner.
In some embodiments, a fourth axis mounting hole group including a plurality of axis mounting holes is formed in the third planet plate, and a fifth axis mounting hole group including a plurality of axis mounting holes is formed in the fourth planet plate; the third shaft mounting hole group, the fourth shaft mounting hole group and the shaft mounting hole blocked by the fifth shaft mounting hole are corresponding and coaxial, and the corresponding shaft mounting holes are the same in aperture size.
In some embodiments, the multi-stage planet carrier is integrally formed.
In some embodiments, the multi-stage planet carrier is cast.
The invention discloses a multi-stage planet combination structure in a second aspect, which comprises any one multi-stage planet carrier and a plurality of planet wheel sets arranged on the multi-stage planet carrier.
In some embodiments, the mounting portions of the planetary plates include shaft mounting holes, the shaft mounting hole of each planetary plate is matched with a planetary wheel shaft of a planetary wheel set corresponding to the planetary plate, at least one planetary plate is provided with a pin hole communicated with the shaft mounting hole and extending along the radial direction of the planetary plate and penetrating through the pin hole and a locking pin matched with the pin hole, and a planetary wheel shaft matched with the shaft mounting hole communicated with the pin hole is provided with a locking hole matched with the locking pin.
In some embodiments, an oil inlet hole for introducing lubricating oil is formed in the multistage planet carrier, a main flow channel extending in the axial direction and a plurality of sub flow channels intersecting with the main flow channel are formed in at least one planet wheel shaft of the planetary wheel set, the main flow channel is communicated with the oil inlet hole, and the sub flow channels penetrate through the outer peripheral surface of the planet wheel shaft where the main flow channel and the sub flow channels are located.
In some embodiments, the planetary shafts of the planetary gear sets are respectively provided with a main flow passage extending along the axial direction and a plurality of sub flow passages intersecting with the main flow passage, the multistage planetary carrier comprises a plurality of oil inlets arranged on the end surface of the multistage planetary carrier, and the plurality of oil inlets are communicated with the main flow passages on the planetary shafts of the planetary gear sets in a one-to-one correspondence manner.
In some embodiments, the planetary gear set is provided with a plurality of grooves on an end face of the planet wheel mounted on the at least one planet wheel shaft, the plurality of grooves extending in a radial direction of the planet wheel.
The invention discloses a multi-gear planetary mechanism in a third aspect, which comprises any one of the multi-stage planetary combination structures, a gear ring meshed with the planetary wheels of the plurality of planetary wheel sets, a rotating shaft and a plurality of sun wheels which are arranged on the rotating shaft and respectively correspond to the plurality of planetary wheel sets one by one, wherein the rotating shaft is selectively in driving connection with one of the plurality of sun wheels.
The multi-stage planet carrier provided by the invention is an integral planet carrier, a plurality of planet plates are arranged and are connected by using the connecting parts, and the planet wheel sets are arranged between each pair of adjacent planet plates, so that the formed multi-stage planet combination structure is more compact, and the formed multi-gear planet mechanism can reduce the volume and the space occupation.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a multi-stage planetary carrier according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the multi-stage planet carrier of the embodiment of FIG. 1;
FIG. 3 is a cross-sectional schematic view of another angle of the multi-stage planet carrier of the embodiment of FIG. 1;
FIG. 4 is a cross-sectional structural schematic view of yet another angle of the multi-stage planet carrier of the embodiment shown in FIG. 1;
FIG. 5 is a schematic view of another angle configuration of the multi-stage planet carrier of the embodiment of FIG. 1;
FIG. 6 is a cross-sectional view of the multi-stage planet carrier of FIG. 4 taken along line A-A;
FIG. 7 is a cross-sectional view of the multi-stage planet carrier of FIG. 4 taken along line B-B;
FIG. 8 is a cross-sectional view of the multi-stage carrier of FIG. 4;
FIG. 9 is a cross-sectional view of the multi-stage planet carrier of FIG. 4 taken along line D-D;
FIG. 10 is a cross-sectional structural view showing a partial structure of a multi-speed planetary mechanism according to an embodiment of the invention;
FIG. 11 is another angular cross-sectional schematic structural view of a partial structure of the multi-speed planetary mechanism shown in FIG. 10;
FIG. 12 is a schematic cross-sectional view of a multiple planetary mechanism in accordance with another embodiment of the present invention;
fig. 13 is a schematic view of a partial structure of an end face of the planetary gear of the multi-speed planetary mechanism shown in fig. 12;
fig. 14 is a schematic view of another angle of the partial structure of the end face of the planetary gear of the multi-stage planetary mechanism shown in fig. 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 12, the multi-stage planetary carrier of the present embodiment includes at least three planetary plates and a plurality of connecting portions connecting each adjacent planetary plate, each pair of adjacent planetary plates is used for mounting a planetary gear set, and each planetary plate is provided with a mounting portion for mounting a planetary gear shaft of the corresponding planetary gear set.
In the embodiment shown in fig. 1 to 12, the plurality of planetary plates includes a first planetary plate 11, a second planetary plate 12, a third planetary plate 13, and a fourth planetary plate 14, which are sequentially arranged at intervals. The plurality of connection portions include a first connection portion 21 connecting the first planetary plate 11 and the second planetary plate 12, a second connection portion 22 connecting the second planetary plate 12 and the third planetary plate 13, and a third connection portion 23 connecting the third planetary plate 13 and the fourth planetary plate 14. The first planetary plate 11 and the second planetary plate 12 are used for mounting the first planetary gear set 41, the second planetary plate 12 and the third planetary plate 13 are used for mounting the second planetary gear set 42, the third planetary plate 13 and the fourth planetary plate 14 are used for mounting the third planetary gear set 44. The first planetary plate 11 corresponds to the first planetary gear set 41, the first planetary plate 11 is provided with a mounting portion for mounting the planetary shafts of the first planetary gear set 41, the second planetary plate 12 corresponds to the first planetary gear set 41 and the second planetary gear set 42, the second planetary plate 12 is provided with a mounting portion for mounting the planetary shafts of the first planetary gear set 41 and the planetary shafts of the second planetary gear set 42, the third planetary plate 13 corresponds to the second planetary gear set 42 and the third planetary gear set 43, the third planetary plate 13 is provided with a mounting portion for mounting the planetary shafts of the second planetary gear set 42 and the planetary shafts of the third planetary gear set 32, the fourth planetary plate 14 corresponds to the third planetary gear set 43, and the fourth planetary plate 14 is provided with a mounting portion for mounting the planetary shafts of the third planetary gear set 3. The formed multi-gear planetary mechanism is more compact in structure and smaller in occupied space.
The multi-stage planet carrier of this embodiment is the integral planet carrier, and the multi-stage planet carrier of this embodiment can assembly forming, also can integrated into one piece. When the multi-stage planet carrier is integrally formed, the multi-stage planet carrier can be machined and formed, and can also be cast and formed. In the embodiment, the plurality of planetary plates are arranged and connected by the plurality of connecting parts, and the planetary wheel set is arranged between each pair of adjacent planetary plates, so that the formed multi-stage planetary combination structure is more compact, and the formed multi-gear planetary mechanism can reduce the volume and the space occupation.
In some embodiments, as shown in fig. 1 to 12, the mounting portions of at least one pair of adjacent planet plates each include three or more shaft mounting holes corresponding to the planet shafts of three or more planet wheels, and the axes of the three or more shaft mounting holes are located on the same cylindrical surface and are distributed unevenly along the circumferential direction of the cylindrical surface. When a plurality of planet wheels are applied to a planetary mechanism in the prior art, the plurality of planet wheels are generally uniformly distributed along the circumferential direction of the sun wheel, and at this time, the condition that the sum of the tooth numbers of the ring gear and the sun wheel is integral multiple of the number of the planet wheels needs to be met. When the multistage planet carrier of this embodiment is used to install a plurality of planet gears, a plurality of axle mounting holes are unevenly distributed, that is, a plurality of planet gears in which the planet gear axles are installed in the axle mounting holes are also unevenly distributed along the circumferential direction of the sun gear, so that the planet mechanism does not need to satisfy the condition that the sum of the number of teeth of the ring gear and the sun gear is an integral multiple of the number of the planet gears, the structure of the planet mechanism in the radial direction can be more compact, the assembly condition can be relaxed, and the design scheme of the ring gear, the sun gear and the planet gears of the.
In the illustrated embodiment, the mounting portions of the adjacent first planetary plate 11 and the second planetary plate 12 each include four shaft mounting holes for mounting two ends of the planetary shafts of the first planetary gear set 41, and the specific first planetary plate 11 includes a first shaft mounting hole set including a first plate first shaft mounting hole 111, a first plate second shaft mounting hole 112, a first plate third shaft mounting hole 113, a first plate fourth shaft mounting hole 114, and the second planetary plate 12 includes a second shaft mounting hole set including a second plate first shaft mounting hole 211, a second plate second shaft mounting hole 212, a second plate third shaft mounting hole 213, and a second plate fourth shaft mounting hole 214.
The mounting portion of the second planet plate 12 and the mounting portion of the third planet plate 13 which are adjacent to each other include four shaft mounting holes respectively used for mounting two ends of a planet shaft of the second planet wheel set 42, and the specific second planet plate 12 further includes a third shaft mounting hole group, the third shaft mounting hole group includes a second plate fifth shaft mounting hole 221, a second plate sixth shaft mounting hole 222, a second plate seventh shaft mounting hole 223, a second plate eighth shaft mounting hole 224, and the third planet plate 13 includes a fourth shaft mounting hole group, the fourth shaft mounting hole group includes a third plate first shaft mounting hole 311, a third shaft mounting hole 312, a third plate third shaft mounting hole 313, and a fourth shaft mounting hole 314.
The mounting portions of the adjacent third planet plates 13 and the adjacent fourth planet plates 14 each include four shaft mounting holes for mounting two ends of the planetary shafts of the third planetary gear set 43, specifically, in the illustrated embodiment, the shaft mounting holes of the third planet plates 12 for mounting the planetary shafts of the third planetary gear set 43 are the same as the shaft mounting holes for mounting the planetary shafts of the second planetary gear set 42, and include a third plate first shaft mounting hole 311, a third plate second shaft mounting hole 312, a third plate third shaft mounting hole 313, a third plate fourth shaft mounting hole 34, and the fourth planet plates 14 include a fourth plate first shaft mounting hole 411, a fourth plate second shaft mounting hole 412, a third plate third shaft mounting hole 313, and a fourth shaft mounting hole 314.
In some embodiments, as shown in fig. 1-2, the three or more axle mounting holes include four axle mounting holes, and the four axle mounting holes are distributed in a central symmetry manner. When a plurality of planet wheels are installed by using a multistage planet carrier with a plurality of shaft mounting holes distributed unevenly, the radial structure of the planet mechanism can be more compact, when the plurality of shaft mounting holes comprise four shaft mounting holes and four shaft mounting holes distributed in a central symmetry manner, the structure of the planet mechanism can be more balanced, and the requirement of realizing dynamic balance during working is easier to meet.
In some embodiments, as shown in fig. 1 to 4 and fig. 10 to 12, the plurality of planetary plates includes a first planetary plate 11, a second planetary plate 12, a third planetary plate 13 and a fourth planetary plate 14 which are sequentially arranged at intervals; the first planetary plate 11 and the second planetary plate 12 are respectively provided with a first shaft mounting hole group and a second shaft mounting hole group which are used for mounting two ends of a planetary gear shaft of the first planetary gear set, and the first shaft mounting hole group and the second shaft mounting hole group respectively comprise a plurality of corresponding shaft mounting holes; the second planet plate 12 is further provided with a third shaft mounting hole group comprising a plurality of shaft mounting holes, and the plurality of shaft mounting holes of the third shaft mounting hole group and the plurality of shaft mounting holes of the second shaft mounting hole group are arranged in a staggered manner. The plurality of shaft mounting holes of the first shaft mounting hole group correspond to the plurality of shaft mounting holes of the second shaft mounting hole group in position and size, and are used for mounting the first planetary gear group 41 together, the plurality of shaft mounting holes of the third shaft mounting hole group are used for mounting the second planetary gear group 42, and the plurality of shaft mounting holes of the third shaft mounting hole group and the plurality of shaft mounting holes of the second shaft mounting hole group are arranged in a staggered mode to enable the first planetary gear group 41 and the second planetary gear group 42 to be staggered in the circumferential direction, so that the dynamic balance effect of the multi-gear planetary mechanism using the multi-stage planetary carrier can be improved.
In some embodiments, as shown in fig. 1 to 4 and fig. 10 to 12, a fourth axis mounting hole set including a plurality of axis mounting holes is provided on the third planet plate 13, and a fifth axis mounting hole set including a plurality of axis mounting holes is provided on the fourth planet plate 14; the shaft mounting holes of the third shaft mounting hole group, the fourth shaft mounting hole group and the fifth shaft mounting hole group are corresponding and coaxial, and the corresponding shaft mounting holes are the same in aperture size. The arrangement can facilitate the processing of the third and fourth mounting hole groups, and at the same time, as shown in fig. 10 to 12, the planetary shafts of the second planetary gear set 42 and the third planetary gear set 43 may be integrated into a whole, such as the integrated planetary shaft 423 in the figure, so as to facilitate the installation of the second planetary gear set 42 and the third planetary gear set 43 when the multi-gear planetary mechanism is installed.
As shown in fig. 10 and 11, in some embodiments, a multi-stage planetary combination structure is further disclosed, and comprises the multi-stage planetary carrier and a plurality of planetary gear sets mounted on the multi-stage planetary carrier.
In some embodiments, as shown in fig. 10 to 12, the mounting portions of the planetary plates include shaft mounting holes, the shaft mounting hole of each planetary plate is matched with a planetary wheel shaft of a planetary wheel set corresponding to the planetary plate, at least one planetary plate is provided with a pin hole 511 and a locking pin 512, the pin hole 511 is communicated with the shaft mounting hole of the planetary plate, extends along the radial direction of the planetary plate and penetrates through the planetary plate, the locking pin 512 is matched with the pin hole 511, and a locking hole 513 is arranged on the planetary wheel shaft matched with the shaft mounting hole communicated with the pin hole 511 and matched with the locking pin 512. The arrangement helps to prevent the planet wheel shaft from moving in the axial direction, so that the formed multi-gear planetary mechanism structure is more reliable.
In some embodiments, as shown in fig. 10 and 12, an oil inlet 516 for introducing lubricating oil is provided on the multi-stage planet carrier, a main flow passage 514 extending in the axial direction and a plurality of sub flow passages 515 intersecting with the main flow passage 514 are provided on at least one planet shaft of the planetary gear set, the main flow passage 514 is communicated with the oil inlet 516, and the plurality of sub flow passages 515 penetrate through the outer peripheral surface of the planet shaft on which the main flow passage 514 is located. The lubricating oil is introduced into the oil inlet 516, can enter the main runner 514 of the planetary gear shaft and then flows out of the sub-runners 515 to lubricate structures such as a bearing, a planetary gear and a sun gear outside the planetary gear shaft, the intersecting form of the main runner 514 and the sub-runners 515 is set, the lubricating oil can rapidly flow to a part needing to be lubricated, meanwhile, the lubricating oil can be uniformly dispersed, lubrication of multiple parts of the multi-gear planetary mechanism is realized, and the lubricating effect of the multi-gear planetary mechanism is improved.
In some embodiments, as shown in fig. 10 and 12, the planetary shafts of the plurality of planetary gear sets are provided with a main flow passage 514 extending along the axial direction and a plurality of sub flow passages 515 intersecting with the main flow passage 514, the multi-stage planet carrier includes a plurality of oil inlets 516 provided on the end surface thereof, and the plurality of oil inlets 516 are in one-to-one correspondence communication with the main flow passages 514 on the planetary shafts of the plurality of planetary gear sets. As shown, the oil inlet 516 may be directly connected to the main flow channel 514 of the planetary gear shaft, or may be connected to the main flow channel 514 through an oil pipe 519. This embodiment is favorable to conveniently letting in lubricating oil and lubricates and improve lubricated effect to the multi-gear planetary mechanism.
In some embodiments, as shown in fig. 13 and 14, the end face of the planet wheel of the planetary wheel set mounted on at least one planet wheel shaft is provided with a plurality of grooves 81, and the plurality of grooves 81 extend along the radial direction of the planet wheel. The grooves 81 are arranged, lubricating oil flowing to the end face of the planet wheel can be guided, when the lubricating oil flows out from the sub-flow channel 515 of the planet wheel shaft as shown in fig. 12, the lubricating oil firstly enters the bearing of the planet wheel and is carried on the inner side, the grooves 81 can guide the lubricating oil, the lubricating oil is guided to the gear teeth of the planet wheel, the meshing between the planet wheel and the sun wheel and the gear ring is lubricated, and the lubricating effect is improved. The grooves 81 can be directly arranged on the end face of the planet wheel, or can be arranged on a separable plate 8 as shown in the figure, and then the plate 8 is arranged on the end face of the planet wheel, so that the plate 8 is convenient to replace.
In some embodiments, as shown in fig. 12, a multi-gear planetary mechanism is further disclosed, and the multi-gear planetary mechanism comprises the multi-stage planetary combination structure, a gear ring meshed with the planetary wheels of the plurality of planetary wheel sets, a rotating shaft and a plurality of sun wheels which are arranged on the rotating shaft and respectively correspond to the plurality of planetary wheel sets in a one-to-one mode, wherein the rotating shaft is selectively in driving connection with one of the plurality of sun wheels. In the embodiment shown in the figures, the ring gears comprise a first ring gear 61 meshing with the planet gears of the first set of planet gears 41, a second ring gear 62 meshing with the planet gears of the second set of planet gears 42, and a third ring gear 63 meshing with the planet gears of the third set of planet gears 43. The plurality of sun gears includes a first sun gear meshing with the planet gears of the first planetary gear set 41, a second sun gear 72 meshing with the planet gears of the second planetary gear set 42, and a third sun gear meshing with the planet gears of the third planetary gear set 43.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (13)
1. A multi-stage planet carrier is characterized by comprising at least three planet plates and a plurality of connecting parts for connecting each adjacent planet plate, wherein each pair of adjacent planet plates is used for mounting a planet wheel set, and each planet plate is provided with a mounting part for mounting a planet wheel shaft of the corresponding planet wheel set.
2. The multi-stage planet carrier of claim 1, wherein the mounting portions of at least one pair of adjacent planet plates each comprise more than three shaft mounting holes corresponding to the planet shafts of more than three planet wheels, and the axes of the more than three shaft mounting holes are located on the same cylindrical surface and are distributed unevenly along the circumferential direction of the cylindrical surface.
3. The multi-stage planet carrier of claim 2 wherein the three or more axle mounting holes comprise four axle mounting holes, the four axle mounting holes being arranged in central symmetry.
4. The multi-stage planet carrier according to claim 1, wherein the plurality of planet plates comprises a first planet plate (11), a second planet plate (12), a third planet plate (13) and a fourth planet plate (14) which are arranged at intervals in sequence; the first planetary plate (11) and the second planetary plate (12) are respectively provided with a first shaft mounting hole group and a second shaft mounting hole group which are used for mounting two ends of a planetary shaft of a first planetary gear set (41), and the first shaft mounting hole group and the second shaft mounting hole group respectively comprise a plurality of corresponding shaft mounting holes; the second planet plate (12) is further provided with a third shaft mounting hole group comprising a plurality of shaft mounting holes, and the plurality of shaft mounting holes of the third shaft mounting hole group and the plurality of shaft mounting holes of the second shaft mounting hole group are arranged in a staggered mode.
5. The multi-stage planet carrier according to claim 4, wherein the third planet plate (13) is provided with a fourth shaft mounting hole group comprising a plurality of shaft mounting holes, and the fourth planet plate (14) is provided with a fifth shaft mounting hole group comprising a plurality of shaft mounting holes; the third shaft mounting hole group, the fourth shaft mounting hole group and the shaft mounting hole blocked by the fifth shaft mounting hole are corresponding and coaxial, and the corresponding shaft mounting holes are the same in aperture size.
6. The multi-stage planet carrier according to any of claims 1 to 5, wherein the multi-stage planet carrier is integrally formed.
7. The multi-stage planet carrier of claim 6 wherein the multi-stage planet carrier is cast.
8. A multi-stage planetary composite structure comprising a multi-stage planetary carrier as claimed in any one of claims 1 to 7 and a plurality of planetary gear sets mounted on the multi-stage planetary carrier.
9. The multistage planetary combination structure as claimed in claim 8, wherein the mounting portions of the planetary plates comprise shaft mounting holes, the shaft mounting hole of each planetary plate is matched with a planetary wheel shaft of a planetary wheel set corresponding to the planetary plate, at least one planetary plate is provided with a pin hole (511) communicated with the shaft mounting hole and extending along the radial direction of the shaft mounting hole and a locking pin (512) matched with the pin hole (511), and a planetary wheel shaft matched with the shaft mounting hole communicated with the pin hole (511) is provided with a locking hole (513) matched with the locking pin (512).
10. The multistage planetary combination structure according to claim 8, wherein an oil inlet (516) for introducing lubricating oil is provided on the multistage planet carrier, a main flow passage (514) extending in the axial direction and a plurality of sub flow passages (515) intersecting with the main flow passage (514) are provided on at least one planet shaft of the planetary gear set, the main flow passage (514) is communicated with the oil inlet (516), and the plurality of sub flow passages (515) penetrate through the outer peripheral surface of the planet shaft on which the sub flow passages are located.
11. The multi-stage planetary combination structure according to claim 10, wherein the planetary shafts of the planetary gear sets are provided with a main flow passage (514) extending along the axial direction and a plurality of sub flow passages (515) intersecting the main flow passage (514), the multi-stage planetary carrier comprises a plurality of oil inlets (516) arranged on the end surface of the multi-stage planetary carrier, and the plurality of oil inlets (516) are communicated with the main flow passages (514) on the planetary shafts of the planetary gear sets in a one-to-one correspondence manner.
12. The multi-stage planetary combination according to claim 8, characterized in that the planetary set is provided with a plurality of recesses (81) on the end face of the planet wheels mounted on the at least one planet wheel shaft, the plurality of recesses (81) extending in the radial direction of the planet wheels.
13. A multi-speed planetary mechanism comprising the multi-stage planetary assembly structure as claimed in any one of claims 8 to 12, a ring gear engaged with the planetary wheels of the plurality of planetary wheel sets, a rotating shaft, and a plurality of sun gears mounted on the rotating shaft in one-to-one correspondence with the plurality of planetary wheel sets, respectively, the rotating shaft being selectively drivingly connected to one of the plurality of sun gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011423393.9A CN112392926B (en) | 2020-12-08 | 2020-12-08 | Multi-stage planet carrier, multi-stage planet combination structure and multi-gear planet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011423393.9A CN112392926B (en) | 2020-12-08 | 2020-12-08 | Multi-stage planet carrier, multi-stage planet combination structure and multi-gear planet mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112392926A true CN112392926A (en) | 2021-02-23 |
| CN112392926B CN112392926B (en) | 2022-05-10 |
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| CN202011423393.9A Active CN112392926B (en) | 2020-12-08 | 2020-12-08 | Multi-stage planet carrier, multi-stage planet combination structure and multi-gear planet mechanism |
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