CN202914694U - Connection structure of input shaft and output shaft of gearbox - Google Patents
Connection structure of input shaft and output shaft of gearbox Download PDFInfo
- Publication number
- CN202914694U CN202914694U CN 201220484131 CN201220484131U CN202914694U CN 202914694 U CN202914694 U CN 202914694U CN 201220484131 CN201220484131 CN 201220484131 CN 201220484131 U CN201220484131 U CN 201220484131U CN 202914694 U CN202914694 U CN 202914694U
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- CN
- China
- Prior art keywords
- tapered roller
- input shaft
- roller bearing
- bearing hole
- output shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- General Details Of Gearings (AREA)
Abstract
The utility model discloses a connection structure of an input shaft and an output shaft of a gearbox. The connection structure comprises a tapered roller bearing inner ring assembly and a cone bearing hole, the tapered roller bearing inner ring assembly is fixedly sleeved on an input shaft end portion or an output shaft end portion, the cone beating hole is arranged on the output shaft end portion or the input shaft end portion, the diameter of the cone bearing hole is gradually reduced from one end close to the shaft end portion to the other end, and the cone bearing hole is sleeved outside the tapered roller bearing inner ring assembly and just forms a complete tapered roller bearing structure with the tapered roller bearing inner ring assembly. According to the structure, original tapered roller bearing outer rings are omitted and replaced by an inner wall of the bearing hole, so that the condition of cracking of the current tapered roller bearing outer rings can be effectively avoided, simultaneously, the bearing hole is designed to be a cone bearing hole, the position of the shaft, which has a small diameter, is just one small diameter end of the cone bearing hole, accordingly, the problem of over-small wall thickness of the bearing hole can be avoided, and strength of the shaft end portions is improved.
Description
Technical field
The utility model relates to engine mission manufacturing machine technical field, particularly a kind of input shaft of gearbox and the linkage structure between the output shaft.
Background technique
Gearbox is the intermediary that the power of motor is passed to wheel, in the process of automobile running, can realize that wheel and motor have different gear ratio coupling by gearbox, by gearbox switch different gears can so that engine operation under its best power performance state.
Gearbox comprises for connecting engine and transmits the input shaft and the output shaft that links to each other with wheel drive shaft of engine power, input shaft and output shaft operated by rotary motion are on two relative sides of gearbox, for input shaft and output shaft are supported simultaneously, general way is by stretch into cylinder-shaped bearing hole of processing, end of the inner end of gearbox at input shaft at present, then the outer ring with tapered roller bearing is arranged in the described cylinder-shaped bearing hole, and with cylinder-shaped bearing hole interference fit, inner ring assembly with roller and roller cage is sleeved on the end that output shaft extend into gearbox inside, and with this end interference fit, then by the inner ring of tapered roller bearing and the end that the end of output shaft is sleeved on input shaft that cooperates of outer ring, thereby realize that input shaft and output shaft can support rotation mutually in the relatively turnable while.
But because thinner with the outer ring of tapered roller bearing of cylindrical hole interference fit on the gearbox casing input shaft, tapered roller bearing long-term run up and bear in the situation of larger radial load can cause rocking of bearing outer ring, cause some positions, tapered roller bearing outer ring to contact with bearing hole inwall point, this can be easy to cause the cracking of tapered roller bearing internal ring, bearing outer ring behind the cracking will rock in bearing hole, this not only can cause the vibrations of gearbox casing integral body, also can cause simultaneously the roller of bearing to damage; In addition, because input shaft stretches into end one end of casing gear need to be installed, thereby input shaft is designed to multidiameter shaft, as shown in fig. 1, offers columniform bearing hole 1 in the input shaft end, this bearing hole should be able to be allowed inner ring and its interference fit of tapered roller bearing, this can cause the less position wall thickness of diameter of input shaft to become very thin, and such as the A position among Fig. 1, this can reduce input shaft intensity herein, the through hardening phenomenon when carrying out carburizing and quenching, occurs easily, cause this place to become hard and crisp.
Therefore, how can provide the linkage structure of a kind of gearbox input shaft and output shaft, with the cracking of the bearing outer ring of avoiding tapered roller bearing, and the intensity that improves shaft end is the technical problem that present those skilled in the art need solution badly.
The model utility content
The purpose of this utility model provides the linkage structure of a kind of gearbox input shaft and output shaft, to avoid the easily problem of cracking of present tapered roller bearing outer ring, can improve the intensity of shaft end simultaneously.
For solving the problems of the technologies described above, the utility model provides the linkage structure of a kind of gearbox input shaft and output shaft, is used for the gearbox input shaft and is connected the interior end connection of gearbox with output shaft, it is characterized in that, comprising:
Fixed cover is located at the tapered roller bearing internal ring assembly of described input shaft or output shaft end;
Be opened in the conical bearing hole of another shaft end, the diameter in described conical bearing hole is reduced to the other end gradually by the end close to shaft end, it is outside that described conical bearing borehole jack is loaded on described tapered roller bearing internal ring assembly, and just with the tapered roller bearing structure of described tapered roller bearing internal ring assembly complete.
Preferably, described tapered roller bearing internal ring assembly fixed cover is located at described output shaft end, and described conical bearing hole is opened in the end of described input shaft.
Preferably, also comprise the shoe cream room that is opened in described input shaft inside, the end that the opening end of described shoe cream room and described conical bearing bore dia are less is connected, and the bottom of shoe cream room of living in communicates with oil inlet hole in the described input shaft.
Preferably, be connected for circular arc chamfering between the bottom of described shoe cream room and its sidewall.
Preferably, also comprise the guiding conical surface that is arranged at the larger end of described conical bearing bore dia, the larger end in the less end of described guiding conical surface diameter and described conical bearing hole links to each other.
Can be found out by this technological scheme, in the utility model the outer ring of original tapered roller bearing is saved, and the bearing hole of the end of input shaft or output shaft directly is processed into the conical bearing hole adaptive with the tapered roller bearing internal ring assembly, like this so that bearing hole has played the effect of tapered roller bearing outer ring and bearing positioning hole simultaneously, owing to saved original tapered roller bearing outer ring, the substitute is the inwall of bearing hole, thereby the situation that runs up and bear the outer ring cracking that also can not occur tapered roller bearing in the situation of larger radial load at tapered roller bearing; Simultaneously because the bearing hole in the utility model is the conical bearing hole, and the diameter in conical bearing hole is progressively reduced to the other end by an end that approaches with shaft end, compare and cylindrical hole of the prior art, owing to do not need to be inserted in the tapered roller bearing outer ring, and just be the less end of conical bearing bore dia at the less position of shaft diameter, thereby the situation that can avoid diameter is less on input shaft or the output shaft position to make its wall thickness become very thin because offering bearing hole occurs, thereby improves the intensity of end.
Description of drawings
Fig. 1 is the structure of tapered roller bearing;
Fig. 2 is prior art middle (center) bearing pore structure;
The bearing hole structure that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the cone structure schematic representation of bearing hole;
The overall schematic of the gearbox input shaft that Fig. 5 provides for the utility model embodiment and the linkage structure of output shaft.
Embodiment
The utility model core purpose provides the linkage structure of a kind of gearbox input shaft and output shaft, this linkage structure is processed into the conical bearing hole adaptive with the tapered roller bearing internal ring assembly with the bearing hole of motor input shaft or output shaft end, so not only can improve the intensity of shaft end, also save simultaneously the tapered roller bearing outer ring with the bearing hole interference fit, thereby avoided the cracking of tapered roller bearing outer ring in running.
In order to make those skilled in the art person understand better the utility model scheme, the utility model is described in further detail below in conjunction with drawings and embodiments.
Please refer to Fig. 1, Fig. 1 is the structure of tapered roller bearing, tapered roller bearing comprises tapered roller bearing outer ring 10 and tapered roller bearing internal ring assembly S, and wherein tapered roller bearing internal ring assembly S comprises tapered roller bearing internal ring 8, is arranged at the roller cage 6 on the tapered roller bearing internal ring 8 and is arranged on roller 7 in the roller cage 6.Track when tapered roller bearing outer ring 10 is mainly tapered roller bearing internal ring assembly S and provides roller 7 to roll and realize simultaneously to tapered roller bearing internal ring assembly S axially and location radially.
Please also refer to Fig. 3 and Fig. 5, the bearing hole structure that provides for the utility model embodiment of Fig. 3 wherein, the overall schematic of the gearbox input shaft that Fig. 5 provides for the utility model embodiment and the linkage structure of output shaft.
The linkage structure of gearbox input shaft provided by the utility model and output shaft is used for the gearbox input shaft and is connected the interior end connection of gearbox with output shaft, and this linkage structure comprises:
Fixed cover is located at the tapered roller bearing internal ring assembly S of input shaft 02 or output shaft 05 end, the tapered roller inner ring assembly S that mentions in the utility model comprises tapered roller bearing internal ring 8, be arranged at the roller cage 6 on the tapered roller bearing internal ring 8 and be arranged on roller 7 in the roller cage 6, and the fixing sheathed end interference fit that refers to tapered roller bearing internal ring 8 and input shaft 02 or output shaft 05 in the present embodiment;
Be opened in the conical bearing hole 01 of another shaft end, and the diameter in this conical bearing hole 01 is reduced to its other end gradually by the end close to shaft end, this conical bearing hole 01 is sleeved on the outside of tapered roller bearing internal ring assembly S, and just with the tapered roller bearing structure of tapered roller bearing internal ring assembly S complete, in course of working, the internal surface in conical bearing hole 01 is had relatively high expectations, please refer to Fig. 4, provided respectively desirable conical surface M among Fig. 4, conical surface L allowable and forbidding conical surface N, wherein the conical surface is the forbidding cone shape hole with respect to the cone shape hole of the outside depression of cone shape hole, because the surface of this bearing hole can cause the rapid wearing of roller two ends, reduce the working life of gearbox, as long as it is cone shape hole allowable that the difference of its peak and minimum point is no more than 0.005mm, the internal surface of desirable cone shape hole should be the plane that roughness meets the demands to the conical surface with respect to the inwardly protruded cone shape hole of cone shape hole.
The roughness on the surface in the conical bearing hole 01 in above-described embodiment and hardness requirement all must reference circle taper roller bearing outer ring standard make, and because conical bearing hole 01 is adaptive with tapered roller bearing internal ring assembly S, thereby it can well realize the axial and location radially of tapered roller bearing internal ring assembly S.
As can be seen from the above embodiments, adopt in the utility model and process the conical bearing hole 01 adaptive with tapered roller bearing internal ring assembly S at input shaft 02 or output shaft 05, like this so that bearing hole has played the effect of tapered roller bearing outer ring 10 and bearing positioning hole simultaneously, owing to saved original tapered roller bearing outer ring 10, the substitute is the inwall in conical bearing hole 01, thereby run up and bear at tapered roller bearing and tapered roller bearing outer ring 10 also can not occur in the situation of larger radial load and contact with the bearing hole internal point, thereby also just fundamentally avoided the situation of tapered roller bearing outer ring cracking; Simultaneously because the bearing hole in the utility model is conical bearing hole 01, and the diameter in conical bearing hole 01 is progressively reduced to the other end by the end close to shaft end, as shown in Figure 3, owing to do not need to be inserted in tapered roller bearing outer ring 10, and just be the less end of conical bearing hole 01 diameter at the less position of shaft diameter, thereby the situation that can avoid diameter is less on input shaft 02 or the output shaft 05 position to make its wall thickness become very thin because offering bearing hole occurs, thereby improve the intensity of shaft end, such as the B place among Fig. 3, because axle head has changed tapered bearing hole 01 into by original cylindrical hole 1, thereby its wall thickness is wanted obviously greater than the A place among Fig. 2.
In assembly process, owing to saved the assembling of tapered roller bearing outer ring 10, thereby also improve assembling speed, improved manufacturing efficiency.
Tapered roller bearing internal ring assembly S fixed cover in the present embodiment is located at output shaft 05 end, accordingly, conical bearing hole 01 is opened in the end of input shaft 02, the bearing inner race assembly S of output shaft 05 is set in the conical bearing hole 01 of input shaft 02 end, the tapered roller bearing structure of complete, thus the input shaft 02 of realizing gearbox stretches into being connected of casing inner end with output shaft 05.
In order further to optimize the technical solution of the utility model, present embodiment has also been offered shoe cream room 04 in the inside of input shaft 02, the end that the opening end of this shoe cream room 04 and conical bearing hole 01 diameter are less is connected, and the bottom of this shoe cream room 04 communicates with the oil inlet hole 09 of input shaft 02 inside.Arranging of this shoe cream room 04 will improve the lubrication state of tapered roller bearing greatly, lubricant oil in the shoe cream room 04 can provide lubricated for tapered roller bearing endlessly, the simultaneously setting of this shoe cream room 04 is also for the processing of bearing hole provides convenience, and this shoe cream room 04 can also be as the withdrawing space of the emery wheel of processing conical bearing hole 01 internal surface in course of working.
In order to reduce the in the course of the work undue concentration of stress, between the bottom of the shoe cream room 04 in the present embodiment and its sidewall for circular arc chamfering is connected, like this can dispersive stress, the working life of improving input shaft 02.
In order to make things convenient for tapered roller bearing internal ring assembly S to be sleeved in the conical bearing hole, preferably be provided with the guiding conical surface 03 at the larger end of conical bearing hole 01 diameter in this enforcement, and should the guiding conical surface 03 a diameter less end and conical bearing hole 01 a larger end links to each other, tapered roller bearing internal ring assembly S is overlapped more fast to be installed in the conical bearing hole 01, improve installation efficiency, the simultaneously setting of this guiding conical surface 03 has also made things convenient for the processing in conical bearing hole 01, the emery wheel that this guiding conical surface 03 can guarantee to process conical bearing hole 01 internal surface axially moves freely conical bearing hole 01, avoids the collision of course of working medium plain emery wheel and conical bearing hole 01 internal surface.
More than the linkage structure of gearbox input shaft provided by the utility model and output shaft is described in detail.Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall into the protection domain of the utility model claim.
Claims (5)
1. the linkage structure of a gearbox input shaft and output shaft is used for gearbox input shaft (02) and is connected 05 with output shaft) extend into the end connection in the gearbox, it is characterized in that, comprising:
Fixed cover is located at the tapered roller bearing internal ring assembly (S) of described input shaft (02) or output shaft (05) end;
Be opened in the conical bearing hole (01) of another shaft end, the diameter in described conical bearing hole (01) is reduced to the other end gradually by the end close to shaft end, described conical bearing hole (01) is set in described tapered roller bearing internal ring assembly (S) outside, and just with the tapered roller bearing structure of described tapered roller bearing internal ring assembly (S) complete.
2. the linkage structure of gearbox input shaft according to claim 1 and output shaft, it is characterized in that, described tapered roller bearing internal ring assembly (S) fixed cover is located at described output shaft (05) end, and described conical bearing hole (01) is opened in the end of described input shaft (02).
3. the linkage structure of gearbox input shaft according to claim 2 and output shaft, it is characterized in that, also comprise and be opened in the inner shoe cream room (04) of described input shaft (02), the end that the opening end of described shoe cream room (04) and described conical bearing hole (01) diameter are less is connected, and the bottom of described shoe cream room (04) communicates with oil inlet hole (09) in the described input shaft (02).
4. the linkage structure of gearbox input shaft according to claim 3 and output shaft is characterized in that, is connected for circular arc chamfering between the bottom of described shoe cream room (04) and its sidewall.
5. the linkage structure of gearbox input shaft according to claim 2 and output shaft, it is characterized in that, also comprise the guiding conical surface (03) that is arranged at the larger end of described conical bearing hole (01) diameter, the larger end in the less end of the described guiding conical surface (03) diameter and described conical bearing hole (01) links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220484131 CN202914694U (en) | 2012-09-20 | 2012-09-20 | Connection structure of input shaft and output shaft of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220484131 CN202914694U (en) | 2012-09-20 | 2012-09-20 | Connection structure of input shaft and output shaft of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914694U true CN202914694U (en) | 2013-05-01 |
Family
ID=48163013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220484131 Expired - Fee Related CN202914694U (en) | 2012-09-20 | 2012-09-20 | Connection structure of input shaft and output shaft of gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914694U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015523A (en) * | 2016-07-01 | 2016-10-12 | 东风商用车有限公司 | Direct-gear gear mechanism |
-
2012
- 2012-09-20 CN CN 201220484131 patent/CN202914694U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015523A (en) * | 2016-07-01 | 2016-10-12 | 东风商用车有限公司 | Direct-gear gear mechanism |
| CN106015523B (en) * | 2016-07-01 | 2018-04-17 | 东风商用车有限公司 | A kind of direct gear gear mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20180920 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |