CN215908357U - Connection structure of gearbox input shaft and gearbox - Google Patents
Connection structure of gearbox input shaft and gearbox Download PDFInfo
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- CN215908357U CN215908357U CN202122519490.4U CN202122519490U CN215908357U CN 215908357 U CN215908357 U CN 215908357U CN 202122519490 U CN202122519490 U CN 202122519490U CN 215908357 U CN215908357 U CN 215908357U
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- input shaft
- planet carrier
- gearbox
- transmission
- planetary gear
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Abstract
The utility model relates to an automatic transmission technical field especially relates to a connection structure and gearbox of gearbox input shaft, and this connection structure of gearbox input shaft includes input shaft and planetary gear set of coaxial setting, planetary gear set includes the planet carrier, the planet carrier with input shaft key connection, the cover is equipped with and is used for the gasket on the input shaft, the thickness of gasket basis remaining space width adjustment after the part assembly on the input shaft. The input shaft and the planet carrier are connected in a key connection mode, the axial position of the planetary gear set can be adjusted within a small distance range while the input shaft and the planet carrier are in transmission connection, and it needs to be explained that the number of the gaskets can be multiple, and the thicknesses of the gaskets are adjusted to absorb residual gaps generated by machining tolerances and assembly tolerances of all parts sleeved on the input shaft through the arrangement of the gaskets.
Description
Technical Field
The present disclosure relates to the field of automatic transmissions, and more particularly, to a transmission input shaft connection structure and a transmission.
Background
An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual driving speed of wheels, and is used for exerting the best performance of the engine. The transmission can generate different gear ratios between an engine and wheels during the running process of the automobile, and the transmission of the rotating speeds of different gears is realized.
The manual transmission mainly comprises gears and a rotating shaft, and the speed change and torque change are generated by different gear combinations; the automatic transmission AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and achieves the purposes of speed and torque changing through a hydraulic transmission and gear combination mode.
Among them, the automatic transmission has advantages of comfortable driving, reducing fatigue of driver, etc., and has become a development direction of modern car configuration. The automatic transmission utilizes a planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the change of vehicle speed, and a driver only needs to operate the accelerator pedal to control the vehicle speed, so that the driver can watch road traffic with full attention without being confused by gear shifting.
The mode of connecting gearbox input shaft and planetary gear set planet carrier that uses at present is welded connection's mode, although welded connection's mode work is very reliable and stable, but because the input shaft length of gearbox is generally very long, it can go on that welding planet carrier and input shaft need dedicated welding equipment, not only the construction is inconvenient, and the cost also can increase, and now because the part in the gearbox all has production and assembly tolerance's existence, so when the equipment gearbox, the part that cup joints on the input shaft can produce the space of different degree on the axial direction, the reliability of whole gearbox work and the life-span of gearbox are influenced very much, after planet carrier and input shaft welding are in the same place, the planet carrier and rather than the part of cup jointing on the input shaft in the axial simultaneously all can be more difficult to adjust.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a transmission input shaft connecting structure and a transmission.
In a first aspect, the present disclosure provides a connection structure of gearbox input shaft, including coaxial arrangement's input shaft and planetary gear set, planetary gear set includes the planet carrier, the planet carrier with the input shaft key joint, the cover is equipped with on the input shaft and is used for the gasket, the thickness basis of gasket spare space width adjustment after the part assembly on the input shaft.
Optionally, the planetary gear set further comprises a limiting plate, wherein the limiting plate is arranged on the outer periphery of the input shaft and is supported on one side of the planet carrier.
Optionally, planetary gear set still includes the sun gear, the planet carrier is kept away from one side of sun gear is equipped with bearing structure, the cover is equipped with two sets of bearings on the input shaft, wherein a set of the bearing sets up the planet carrier with between the bearing structure, another group the bearing sets up between planet carrier and the sun gear.
Optionally, the bearing is provided at an oil passage of the input shaft.
Optionally, the spacer is disposed to avoid an oil passage of the input shaft.
Optionally, the input shaft is splined to the planet carrier.
Optionally, the limiting plate and the input shaft are integrally formed.
Optionally, the bearing is a thrust bearing.
In a second aspect, the present disclosure provides a gearbox comprising a connection arrangement as described above.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the connecting structure of the input shaft of the gearbox, which is provided by the disclosure, can ensure that the input shaft and the planet carrier are connected in a key connection mode, can ensure that the axial position of the planetary gear set can be adjusted within a smaller distance range while ensuring the transmission connection, can ensure that the arrangement of parts inside the gearbox is more flexible, can adjust the axial position of the planetary gear set in time according to the actual processing tolerance and the assembly tolerance of the parts inside the gearbox, and needs to be explained that the number of the gaskets can be multiple, and the thicknesses of the gaskets are adjusted to absorb the residual gaps generated by the processing tolerance and the assembly tolerance of all the parts sleeved on the input shaft through the arrangement of the gaskets, so that all the parts sleeved on the input shaft can be ensured to be closely matched in the axial direction, and the situation that the parts are damaged due to collision during working caused by the assembly clearance is prevented, the smooth operation of gearbox work can be guaranteed, the life of gearbox can also be prolonged, the maintenance cost in gearbox later stage is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a connection structure of an input shaft of a transmission according to an embodiment of the present disclosure.
Wherein, 1, an input shaft; 11. an oil passage; 2. a planetary gear set; 21. a planet carrier; 22. a sun gear; 3. a gasket; 4. a limiting plate; 5. a bearing; 6. a support structure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual driving speed of wheels, and is used for exerting the best performance of the engine. The transmission can generate different gear ratios between an engine and wheels during the running process of the automobile, and the transmission of the rotating speeds of different gears is realized.
The manual transmission mainly comprises gears and a rotating shaft, and the speed change and torque change are generated by different gear combinations; the automatic transmission AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and achieves the purposes of speed and torque changing through a hydraulic transmission and gear combination mode.
Among them, the automatic transmission has advantages of comfortable driving, reducing fatigue of driver, etc., and has become a development direction of modern car configuration. The automatic transmission utilizes a planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the change of vehicle speed, and a driver only needs to operate the accelerator pedal to control the vehicle speed, so that the driver can watch road traffic with full attention without being confused by gear shifting.
The mode of connecting gearbox input shaft and planetary gear set planet carrier that uses at present is welded connection's mode, though welded connection's mode work is very stable and reliable, but with planet carrier and input shaft welding back as an organic whole, because planetary gear set supports on its bearing structure, its itself and bearing structure relatively fixed, can't adjust the axial position of input shaft at any time according to the demand again this moment and adapt to the size and the position of other parts, planet carrier between input shaft and the planetary gear set leads to the connection and the overall arrangement of part to be unable nimble to be adjusted for welded connection's mode.
Based on this, this embodiment provides a connection structure of a transmission input shaft and a transmission, by connecting the input shaft and a planet carrier in a key connection manner, the input shaft and the planet carrier can be connected in a transmission manner, and the axial position of a planetary gear set can be adjusted within a smaller distance range, so that the arrangement of parts inside the transmission is more flexible, the axial position of the planetary gear set can be adjusted in time according to the actual machining tolerance and assembly tolerance of the parts inside the transmission, it should be noted that the number of the gaskets can be multiple, the respective thicknesses of the multiple gaskets are adjusted to absorb the residual gaps generated by the machining tolerance and the assembly tolerance of all the parts sleeved on the input shaft, all the parts sleeved on the input shaft can be ensured to be tightly matched in the axial direction, and the situation that the parts are damaged due to the assembly gap when in work is prevented, the smooth operation of gearbox work can be guaranteed, the life of gearbox can also be prolonged, the maintenance cost in gearbox later stage is reduced. This is illustrated in detail by the following specific examples:
referring to fig. 1, the connection structure of the input shaft of the transmission provided by the embodiment includes an input shaft 1 and a planetary gear set 2 which are coaxially arranged, the planetary gear set 2 includes a planet carrier 21, the planet carrier 21 is in key connection with the input shaft 1, a gasket 3 is sleeved on the input shaft 1, and the thickness of the gasket 3 is adjusted according to the width of a gap left after the parts on the input shaft 1 are assembled.
The input shaft 1 and the planet carrier 21 are connected in a key connection mode, so that the axial position of the planetary gear set 2 can be adjusted within a smaller distance range while the transmission connection of the input shaft 1 and the planet carrier 21 is ensured, the arrangement of parts inside the gearbox is more flexible, the axial position of the planetary gear set 2 can be adjusted in time according to the actual processing tolerance and the assembly tolerance of the parts inside the gearbox, it needs to be explained that the number of the gaskets 3 can be multiple, the thicknesses of the gaskets 3 are adjusted through the arrangement of the gaskets 3 to absorb the residual gaps generated by the processing tolerance and the assembly tolerance of all the parts sleeved on the input shaft 1, all the parts sleeved on the input shaft 1 can be ensured to be closely matched in the axial direction, and the situation that the parts are damaged due to collision during working caused by the assembly clearance is prevented, the smooth operation of gearbox work can be guaranteed, the life of gearbox can also be prolonged, the maintenance cost in gearbox later stage is reduced.
Continuing to refer to fig. 1, this connection structure still includes limiting plate 4, limiting plate 4 is the ring form setting in input shaft 1 periphery side, and limit planet carrier 21 along its axial displacement, it should be noted that, limiting plate 4 and input shaft 1 integrated into one piece, limiting plate 4 can restrict planet carrier 21 along the ascending removal of axial direction on input shaft 1 effectively, guarantee reliability and stability that planet carrier 21 and input shaft 1 transmission are connected, simultaneously, through limiting plate 4 and input shaft 1 integrated into one piece's setting, can make limiting plate 4 and input shaft 1 use same material and heat treatment mode, guarantee limiting plate 4's intensity, can also reduce the part number that cup joints on the input shaft 1.
In some embodiments, the planetary gear set 2 further includes a sun gear 22, a supporting structure 6 is disposed on a side of the planet carrier 21 away from the sun gear 22, two sets of bearings 5 are sleeved on the input shaft 1, one set of bearings 5 is disposed between the planet carrier 21 and the supporting structure 6, the other set of bearings 5 is disposed between the planet carrier 21 and the sun gear 22, where the bearings 5 are thrust bearings, and the bearings 5 can stabilize the planet carrier 21 when the rotation speed of the input shaft 1 is transmitted, reduce wear of parts at the connecting structure, and reduce maintenance cost at the later stage of the transmission.
In a further embodiment, the bearing 5 is arranged at the oil duct 11 of the input shaft 1, and the bearing 5 can utilize the gap of the bearing to communicate the oil duct 11 on the input shaft 1 with the oil duct in the cavity, so that the smooth oil duct in the gearbox can be ensured while the supporting and the work of reducing the abrasion of parts are completed.
With continued reference to fig. 1, the gasket 3 is disposed to avoid the oil passage 11 of the input shaft 1, so as to ensure smooth oil passage in the transmission and normal operation of a lubricating system and a cooling system in the transmission.
During concrete implementation, input shaft 1 and planet carrier 21 splined connection, the mode of splined connection can make things convenient for input shaft 1 to adjust on axial direction more to splined connection also can guarantee the stable transmission work of input shaft 1 and planet carrier 21.
The present disclosure also provides a gearbox comprising a connection structure as described above.
The specific implementation manner and implementation principle are the same as those of the above embodiments, and can bring the same or similar technical effects, and are not described in detail herein, and reference may be made to the description of the connection structure embodiment of the transmission input shaft.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a connection structure of gearbox input shaft, its characterized in that, input shaft (1) and planetary gear set (2) including coaxial setting, planetary gear set (2) include planet carrier (21), planet carrier (21) with input shaft (1) key-type connection, the cover is equipped with on input shaft (1) and is used for gasket (3), the thickness of gasket (3) basis remaining space width adjustment after the part assembly on input shaft (1).
2. The transmission input shaft connecting structure according to claim 1, further comprising a stopper plate (4), the stopper plate (4) being provided on an outer peripheral side of the input shaft (1) and supported on one side of the carrier (21).
3. A connection arrangement for a gearbox input shaft according to claim 2, characterised in that the planetary gear set (2) also comprises a sun gear (22), that the side of the planet carrier (21) remote from the sun gear (22) is provided with a support structure (6), that the input shaft (1) is fitted with two sets of bearings (5), one set of which bearings (5) is arranged between the planet carrier (21) and the support structure (6), and the other set of which bearings (5) is arranged between the planet carrier (21) and the sun gear (22).
4. A transmission input shaft connection according to claim 3, characterized in that the bearing (5) is provided at an oil channel (11) of the input shaft (1).
5. The transmission input shaft connecting structure according to claim 1, wherein the spacer (3) is provided avoiding the oil passage (11) of the input shaft (1).
6. A transmission input shaft connection according to claim 1, characterised in that the input shaft (1) is splined to the planet carrier (21).
7. The connection structure of a transmission input shaft according to claim 2, characterized in that the stopper plate (4) is integrally formed with the input shaft (1).
8. A transmission input shaft connection according to claim 3, characterised in that the bearing (5) is a thrust bearing.
9. A transmission comprising a transmission input shaft coupling structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122519490.4U CN215908357U (en) | 2021-10-19 | 2021-10-19 | Connection structure of gearbox input shaft and gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122519490.4U CN215908357U (en) | 2021-10-19 | 2021-10-19 | Connection structure of gearbox input shaft and gearbox |
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| Publication Number | Publication Date |
|---|---|
| CN215908357U true CN215908357U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122519490.4U Active CN215908357U (en) | 2021-10-19 | 2021-10-19 | Connection structure of gearbox input shaft and gearbox |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753298A (en) * | 2023-08-14 | 2023-09-15 | 江苏速豹动力科技有限公司 | Planet row limiting device and equipment using same |
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2021
- 2021-10-19 CN CN202122519490.4U patent/CN215908357U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753298A (en) * | 2023-08-14 | 2023-09-15 | 江苏速豹动力科技有限公司 | Planet row limiting device and equipment using same |
| CN116753298B (en) * | 2023-08-14 | 2023-11-14 | 江苏速豹动力科技有限公司 | Planet row limiting device and equipment using same |
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