CN216951599U - Split type AT planet carrier - Google Patents
Split type AT planet carrier Download PDFInfo
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- CN216951599U CN216951599U CN202122732549.8U CN202122732549U CN216951599U CN 216951599 U CN216951599 U CN 216951599U CN 202122732549 U CN202122732549 U CN 202122732549U CN 216951599 U CN216951599 U CN 216951599U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
A split type AT planet carrier comprises a first carrier body and a second carrier body; the first frame body is provided with a plurality of first connecting pieces and a plurality of second connecting pieces; the plurality of first connecting pieces and the plurality of second connecting pieces penetrate through the first frame body and are connected with the second frame body; a plurality of matching pieces are arranged on one side of the second frame body, penetrate through the second frame body and are correspondingly matched and connected with the first connecting pieces one by one; the planet carrier also comprises a third connecting piece and a fourth connecting piece, one ends of the third connecting piece and the fourth connecting piece are connected with the second frame body, and the other ends of the third connecting piece and the fourth connecting piece are connected with the first frame body. The planet carrier reduces the machining process and greatly saves the radial space. The length of the first connecting piece or the fitting piece can be shortened to a great extent by adopting the matching of the first connecting piece and the fitting piece, the reliability of the planet carrier structure is improved, and the processing of radial characteristics of the planet carrier can be realized. The planet carrier has reasonable design, compact structure and convenient processing.
Description
Technical Field
The utility model relates to the technical field of vehicle transmission, in particular to a split type AT planet carrier.
Background
The AT automatic transmission is always favored by consumers because of good operation stability, comfort, smoothness and reliability. The planet carrier is an important component of a transmission mechanism of the gearbox, mainly plays a role in outputting rotating speed and torque, and has high strength requirement. The common structures include a double-side-plate integral type, a double-side-plate split type and a single-side-plate type. Although the double-side plate is good in integral rigidity, if the mode of integral casting is adopted, a large amount of cutting machining is needed, and if the final structure is obtained by adopting split casting and a welding method, because defects are easy to occur in the welding process, the internal stress of the planet carrier exists and needs to be eliminated in time, otherwise, the strength of the planet carrier is affected.
At present, the split type planet carrier does not need welding, the left planet carrier and the right planet carrier are cast in a split mode on the left and the right of a symmetry plane of a planet shaft hole, then the two planet carriers are connected through bolts, and finally the four pins are added to correct axial rotation errors of the two half planet carriers.
SUMMERY OF THE UTILITY MODEL
Aiming AT the problems in the prior art, the utility model provides a split type AT planet carrier.
The utility model is realized by the following technical scheme:
a split type AT planet carrier comprises a first carrier body and a second carrier body; the first frame body is provided with a plurality of first connecting pieces and a plurality of second connecting pieces; the plurality of first connecting pieces and the plurality of second connecting pieces penetrate through the first frame body and are connected with the second frame body;
a plurality of matching pieces are arranged on one side of the second frame body, penetrate through the second frame body and are correspondingly matched and connected with the first connecting pieces one by one;
the planet carrier also comprises a third connecting piece and a fourth connecting piece, one ends of the third connecting piece and the fourth connecting piece are connected with the second frame body, and the other ends of the third connecting piece and the fourth connecting piece are connected with the first frame body.
Preferably, the first connecting pieces are pin pieces with internal threads at one end, and external threads are arranged at one end of the matching piece; the plurality of matching pieces penetrate through the second frame body, and the external threads of the matching pieces are in threaded connection with the internal threads.
Preferably, the plurality of second connecting pieces penetrate through the first frame body and are in threaded connection with the second frame body.
Preferably, the third connecting piece and the fourth connecting piece are in transition fit with the second frame body.
Preferably, the third connecting piece and the fourth connecting piece are in clearance fit with the first frame body.
Preferably, the plurality of first connecting pieces and the planet shaft holes on the first frame body are arranged at intervals along the circumferential direction of the first frame body; the plurality of first connecting pieces and the planetary shaft holes on the first frame body are uniformly distributed along the circumferential direction of the first frame body.
Preferably, the plurality of second connecting pieces are arranged along the center of the first frame in a centrosymmetric manner.
Preferably, the plurality of first connecting pieces are in transition fit with the first frame body and the second frame body.
Preferably, the third connecting piece and the fourth connecting piece are cylindrical pins, and the diameter of the third connecting piece is not equal to that of the fourth connecting piece.
Preferably, the first frame body is provided with a first pin hole and a second pin hole, and the first pin hole and the second pin hole are respectively connected with the third connecting piece and the fourth connecting piece.
Compared with the prior art, the utility model has the following beneficial technical effects:
a split type AT planet carrier is provided with a first connecting piece and a matching piece which are mutually matched and connected on a first support body and a second support body respectively, so that the machining procedures are reduced, and meanwhile, the radial space is greatly saved. Under the condition that the planet carriers on the two sides are thick, the length of the first connecting piece or the length of the matching piece can be shortened to a great extent by adopting the matching of the first connecting piece and the matching piece, and the reliability of the planet carrier structure is improved. The third connecting piece and the fourth connecting piece can be radially positioned, so that the planet carrier can be conveniently processed according to radial characteristics.
Furthermore, a plurality of first connecting pieces are pin pieces with internal threads at one end, external threads are arranged at one ends of the matching pieces, the matching pieces penetrate through the second support body, the external threads of the matching pieces are in threaded connection with the internal threads, and the first support body and the second support body are fixed into a whole through threaded matching, so that the planet carrier can be conveniently processed after the planet carrier is assembled.
Further, a plurality of second connecting pieces run through first support body, with second support body threaded connection, accomplish the fixed of first support body and second support body through a plurality of second connecting pieces in the box assembling course of working to after accomplishing the processing, the screw hole that leaves can regard as hoist and mount screw hole to use, has improved the utilization ratio of processed characteristic greatly when reducing the cutting process volume.
Furthermore, the third connecting piece and the fourth connecting piece are in transition fit with the second frame body and in clearance fit with the first frame body, so that the assembling process of the planet carrier is more convenient and faster.
Furthermore, the planet shaft holes on the first connecting pieces and the first support body are uniformly distributed along the circumferential interval of the first support body, so that the stress of the planet carrier in all directions is uniform after the first support body is connected with the second support body and in the use process.
Furthermore, a plurality of second connecting pieces are arranged along the circle center of the first frame body in a centrosymmetric manner, so that the stress of the planet frame in all directions can be uniform in the box-closing machining process after the first frame body is connected with the second frame body.
Furthermore, a plurality of first connecting pieces are in transition fit with the first frame body and the second frame body, so that the axial deviation in the machining process can be corrected.
Furthermore, the third connecting piece and the fourth connecting piece are cylindrical pins, and the diameter of the third connecting piece is not equal to that of the fourth connecting piece, so that the possibility of misassembly can be effectively prevented, the process of marking or scribing after box closing processing is omitted, and the accurate assembly of workers on an assembly site is facilitated.
Furthermore, a first pin hole and a second pin hole are formed in the first frame body, so that the third connecting piece and the fourth connecting piece can be connected with the first frame body more conveniently and quickly.
Drawings
FIG. 1 is a left side view of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 1;
fig. 4 is a cross-sectional view taken along plane B-B of fig. 1.
In the figure: 1. the frame comprises a first frame body, a second frame body, 11, a first connecting piece, 12, a second connecting piece, 13, a first pin hole, 14, a second pin hole, 21, a matching piece, 22, a third connecting piece, 23 and a fourth connecting piece.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.
As shown in fig. 1 to 4, a split AT planet carrier includes a first carrier 1 and a second carrier 2; be equipped with a plurality of first connecting pieces 11 and a plurality of second connecting piece 12 on the first support body 1, be equipped with four first connecting pieces 11 in this embodiment, with the even interval setting of the circumference of first support body 1 in the planet shaft hole on the first support body 1. The first connecting member 11 is a non-standard pin member having an internal thread at one end. First connecting piece 11 runs through first support body 1 and is connected with second support body 2, first connecting piece 11 and first support body 1 transition fit.
In this embodiment, two second connecting members 12 are provided, the second connecting members 12 may adopt a bolt structure having an inner hexagonal head, the two second connecting members 12 are arranged in a central symmetry manner along the center of the first frame body 1, and the two second connecting members 12 and the two first connecting members 11 along the diameter direction are on the same diameter of the first frame body 1. The second connecting member 12 penetrates the first frame body 1, is connected with the second frame body 2, and can be in threaded connection with the second frame body 2.
One side of the second frame body 2 is provided with a plurality of matching pieces 21, in this embodiment, four matching pieces 21 are arranged, and the four matching pieces 21 penetrate through the second frame body 2 and are connected with the first connecting piece 11; the fitting member 21 may have a screw structure having an inner hexagonal shape, and when one end of the first connecting member 11 is provided with an inner thread, it is screw-coupled to the position of the inner thread. The planet carrier also comprises a third connecting piece 22 and a fourth connecting piece 23, and the third connecting piece 22 and the fourth connecting piece 23 adopt a cylindrical pin structure. One end of the third connector 22 and the fourth connector 23 is connected to the second frame body 2, and the other end is connected to the first frame body 1. The diameter of the third connection 22 is not equal to the diameter of the fourth connection 23. The third connecting piece 22 and the fourth connecting piece 23 are in transition fit with the second frame body 2 and in clearance fit with the first frame body 1. The first frame body 1 is further provided with a first pin hole 13 and a second pin hole 14, and the first pin hole 13 and the second pin hole 14 are respectively connected with a third connecting piece 22 and a fourth connecting piece 23.
The utility model aims to introduce a novel split type AT planet carrier structure. The split type planet carrier aims to simplify the design of the existing split type planet carrier, not only can be used for processing axial characteristics, but also can be used for processing radial characteristics when the box closing processing is carried out, and in addition, the split type planet carrier is still applicable when the size of the planet carrier is larger.
The planet carrier structure of the present invention is shown in fig. 1, the first carrier 1 has four planet axle holes and matched elastic cylindrical pin holes, and also has four uniformly distributed non-standard pins, i.e. a first connecting member 11, and the four non-standard pins have two functions, one of which is: because split type planet carrier needs both sides separately to process, leads to probably the out-of-tolerance to the higher planet shaft hole of position degree requirement, consequently corrects the axial deviation that probably appears with four nonstandard round pins with both sides planet carrier transition fit, its two: one end of the non-standard pin piece is provided with an internal thread hole, and the first support body 1 and the second support body 2 are connected into a whole together through matching with a bolt on the second support body 2, namely the matching piece 21. The first frame body 1 is also provided with four holes, two of which are bolt through holes, namely unthreaded holes for mounting the second connecting piece 12; the other two are cylindrical pin holes, i.e., a first pin hole 13 and a second pin hole 14. The four holes are technological process characteristics, as the planet shaft holes, the splines and the bearing positioning surfaces have higher requirements on form and position tolerance, if the characteristics are separately processed, the problems of eccentricity, difficult assembly and the like exist in the final planet carrier, and therefore the characteristics need to process the planet carriers on two sides after the two sides are combined, two bolts, namely two second connecting pieces 12 are arranged to fix the left and right planet carriers into a whole for processing axial characteristics, and as radial characteristics exist, two cylindrical pins, namely a third connecting piece 22 and a fourth connecting piece 23 are arranged for radial positioning. Considering convenient assembling, first support body and second support body need unscrew two bolts when the assembly, in order to prevent the dress from turning over, consequently set up two cylindric locks that the diameter is not of uniform size.
According to the utility model, the first frame body 1 and the second frame body 2 are fixed by two bolts, namely the second connecting piece 12, in the box closing processing process, and the left threaded holes can be used as hoisting threaded holes after the processing is finished, so that the utilization rate of processed characteristics is greatly improved while the cutting processing amount is reduced. The requirement of radial positioning during mould assembling processing is met by processing two pin holes, namely the first pin hole 13 and the second pin hole 14, in addition, the possibility of misassembly is prevented by designing two cylindrical pins with different sizes, namely the third connecting piece 22 and the fourth connecting piece 23, the process of marking or scribing after mould assembling processing is omitted, and the correct assembly of workers on an assembly site is facilitated. The design by four larger diameter non-standard pin members, i.e. the first connecting member 11, achieves two major functions: the first frame body 1 and the second frame body 2 are in transition fit to achieve the functions of radial positioning and elimination of machining errors, so that the position degree of a planet shaft hole cannot meet the design requirements; two, for fitting 21 provides the screw hole, both fix first support body 1 and second support body 2 as a whole through screw-thread fit, because hexagon socket head cap bolt and nonstandard round pin are on same axis, compare present split type planet carrier and saved the processing of bolt via hole on the planet carrier of one side, very big saving radial space when reducing the process. Under the condition that planet carriers on two sides are thick, if only the planet carriers on two sides are connected through bolts, longer bolts need to be selected, and in the working process, the strength of the bolts is a huge risk point. And the adoption of the cooperation of the non-standard pins and the bolts can greatly shorten the length of the bolts and improve the reliability of the planet carrier structure.
The working process of the planet carrier structure is as follows: in order to ensure that the planet shaft holes, the bearing matching surfaces and the splines meet the design requirements, the machining is divided into the machining before the planet carriers on two sides are combined into a box and the machining after the planet carriers are combined into the box. Firstly, planet carriers on two sides are connected through two hexagon socket head cap bolts, then two standard cylindrical pins are used for radial positioning, and the connected planet carriers are subjected to box closing processing. And (5) assembling after finishing the machining of the planetary shaft hole, the bearing matching surface and the spline. At the moment, the two hexagon socket head cap screws are detached, the left threaded holes are used as later hoisting threaded holes, and the two cylindrical pins are still reserved for preliminary positioning as the planet carriers on the two sides. The matching mode of the two cylindrical pins and the planet carriers on the two sides is as follows: the left planet carrier is in transition fit, and the right planet carrier is in clearance fit. In actual assembly, the assembly is carried out from the right side to the left side, firstly, a planet shaft and related parts are arranged in a right planet carrier, a thrust washer, a planet wheel and a gear ring are sequentially arranged, then, the left planet carrier with two cylindrical pins is assembled in an assembly, finally, four non-standard pins are assembled in the assembly through transition fit, and a hexagon head bolt is screwed in the other side of the assembly to complete the whole assembly process.
Claims (10)
1. A split type AT planet carrier is characterized by comprising a first carrier body (1) and a second carrier body (2); a plurality of first connecting pieces (11) and a plurality of second connecting pieces (12) are arranged on the first frame body (1); the plurality of first connecting pieces (11) and the plurality of second connecting pieces (12) penetrate through the first frame body (1) and are connected with the second frame body (2);
a plurality of matching pieces (21) are arranged on one side of the second frame body (2), and the matching pieces (21) penetrate through the second frame body (2) and are correspondingly matched and connected with the first connecting pieces (11) one by one;
the planet carrier also comprises a third connecting piece (22) and a fourth connecting piece (23), one end of the third connecting piece (22) and one end of the fourth connecting piece (23) are connected with the second frame body (2), and the other end of the third connecting piece (22) and the other end of the fourth connecting piece (23) are connected with the first frame body (1).
2. The split AT planet carrier according to claim 1, wherein the first connecting members (11) are pin members with an internal thread AT one end and the mating member (21) is provided with an external thread AT one end; the plurality of matching parts (21) penetrate through the second frame body (2), and the external threads of the matching parts are in threaded connection with the internal threads.
3. The split AT planet carrier according to claim 1, wherein the second connecting members (12) penetrate through the first carrier body (1) and are in threaded connection with the second carrier body (2).
4. A split AT planet carrier according to claim 1, characterised in that the third (22) and fourth (23) connection members are transition fitted to the second carrier body (2).
5. A split AT planet carrier according to claim 1, characterised in that the third (22) and fourth (23) connecting members are clearance fitted to the first carrier body (1).
6. The split AT planet carrier according to claim 1, wherein the first connecting members (11) and the planet shaft holes on the first carrier body (1) are arranged AT intervals along the circumferential direction of the first carrier body (1); the planetary shaft holes in the first connecting pieces (11) and the first support body (1) are uniformly distributed along the circumferential direction of the first support body (1).
7. The split AT planet carrier according to claim 1, wherein the second connecting members (12) are arranged in a central symmetry along a circle center of the first carrier body (1).
8. The split AT planet carrier according to claim 1, wherein the first connectors (11) are transition fitted to the first carrier body (1) and the second carrier body (2).
9. A split AT planet carrier as claimed in claim 1, wherein the third (22) and fourth (23) connecting members are cylindrical pins, the diameter of the third connecting member (22) not being equal to the diameter of the fourth connecting member (23).
10. The split AT planet carrier according to claim 9, wherein the first frame body (1) is provided with a first pin hole (13) and a second pin hole (14), and the first pin hole (13) and the second pin hole (14) are respectively connected with a third connecting piece (22) and a fourth connecting piece (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122732549.8U CN216951599U (en) | 2021-11-09 | 2021-11-09 | Split type AT planet carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122732549.8U CN216951599U (en) | 2021-11-09 | 2021-11-09 | Split type AT planet carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951599U true CN216951599U (en) | 2022-07-12 |
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ID=82305193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122732549.8U Active CN216951599U (en) | 2021-11-09 | 2021-11-09 | Split type AT planet carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951599U (en) |
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2021
- 2021-11-09 CN CN202122732549.8U patent/CN216951599U/en active Active
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