CN212455431U - Speed reduction mechanism, transmission case, and drive device - Google Patents
Speed reduction mechanism, transmission case, and drive device Download PDFInfo
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- CN212455431U CN212455431U CN202020912681.XU CN202020912681U CN212455431U CN 212455431 U CN212455431 U CN 212455431U CN 202020912681 U CN202020912681 U CN 202020912681U CN 212455431 U CN212455431 U CN 212455431U
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Abstract
The utility model discloses a reduction gears, gearbox and drive arrangement. The speed reducing mechanism includes: a first reduction gear, a second reduction gear and an output shaft assembly; the output shaft assembly comprises a first output shaft and a second output shaft which are coaxially matched, and the first output shaft can rotate relative to the second output shaft; the first speed reduction device is in transmission connection with the first output shaft, and the second speed reduction device is in transmission connection with the second output shaft. The first output shaft and the second output shaft in the speed reducing mechanism are matched together and can have different rotating speeds and torques under the driving of the two speed reducing devices, and the first output shaft and the second output shaft can be respectively connected with different parts to carry out independent transmission, so that different outputs of the same speed reducing mechanism and high integration of the speed reducing mechanism are realized.
Description
Technical Field
The utility model relates to a mechanical transmission technical field, concretely relates to reduction gears, gearbox and drive arrangement.
Background
The vehicle dual-motor drive system is generally classified into a torque coupling type, a rotational speed torque coupling type, a hub dual-motor type, and a wheel-side dual-motor type. In the conventional wheel-side double-motor driving device, motors are arranged independently or symmetrically, speed reducers are arranged independently or simply in parallel, and the driving device is generally large in size in the wheel track direction and is generally used for large commercial vehicles such as buses. However, it is difficult to apply the variable speed drive system to a general small car or a small device. Therefore, how to improve the integration and the performance of the conventional transmission system becomes a technical problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reduction gears, gearbox and drive arrangement to solve among the prior art reduction gears integrated level low, be difficult to be applied to the problem of small-size device.
In order to achieve the above object, the present invention provides a reduction gear, including: a first reduction gear, a second reduction gear and an output shaft assembly;
the output shaft assembly comprises a first output shaft and a second output shaft which are coaxially matched, and the first output shaft can rotate relative to the second output shaft;
the first speed reduction device is in transmission connection with the first output shaft, and the second speed reduction device is in transmission connection with the second output shaft.
Optionally, a thrust bearing is arranged between the first output shaft and the second output shaft, one end of the thrust bearing abuts against the first output shaft, and the other end of the thrust bearing abuts against the second output shaft;
the first output shaft rotates relative to the second output shaft through the thrust bearing.
Optionally, the first output shaft has a first mating end shaft, the second output shaft has a second mating end shaft, the second mating end shaft is formed with an inner concave circular groove, the first mating end shaft is inserted into the inner concave circular groove,
the thrust bearing is sleeved on the first matching end shaft, one end of the thrust bearing is abutted against a shaft shoulder of the first matching end shaft, and the other end of the thrust bearing is abutted against the end part of the second matching end shaft.
Optionally, a rolling bearing is arranged between the first matching end shaft and the second matching end shaft, an inner ring of the rolling bearing is sleeved on the outer circumferential surface of the first matching end shaft, and an outer ring of the rolling bearing is matched with the circular inner surface of the inner concave circular groove.
Optionally, the rolling bearing is a needle bearing.
Optionally, the first reduction gear and the second reduction gear are both multi-speed transmission.
The utility model discloses a gearbox, including the casing and the utility model discloses a reduction gears, reduction gears set up in the casing.
Optionally, a support bearing is disposed on each of the first output shaft and the second output shaft, and the support bearing is disposed on the housing.
The utility model also provides a drive arrangement, including first driver part and second driver part and the utility model discloses a gearbox, first decelerator with first driver part transmission is connected, second decelerator with the transmission of second driver part is connected.
Optionally, the first drive component and the second drive component are respectively located at two ends of the gearbox;
and a connecting line of the circle center of the shaft end of the first driving part, the circle center of the shaft end of the output shaft assembly and the circle center of the shaft end of the second driving part in a plane forms a preset included angle.
The utility model discloses following beneficial effect has: the transmission power of the two speed reducing devices in the speed reducing mechanism can respectively drive the two output shafts of the output shaft assembly, the first output shaft and the second output shaft are matched together, different rotating speeds and torques can be achieved under the driving of the two speed reducing devices, the first output shaft and the second output shaft can be respectively connected with different parts to conduct independent transmission, and therefore different outputs of the same speed reducing mechanism and high integration of the speed reducing mechanism are achieved.
The advantages of the gearbox, the driving device and the speed reducing mechanism are the same compared with the prior art, and are not described again.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic cross-sectional view of a transmission case according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of the position of the output shaft assembly of FIG. 1;
FIG. 3 is an exploded schematic view of FIG. 2;
fig. 4 is a schematic cross-sectional view of a driving device according to an embodiment of the present invention;
fig. 5 is a side schematic view of the drive arrangement of fig. 4.
Description of reference numerals:
10-a first reduction gear;
20-a second reduction;
30-an output shaft assembly; 31-a first output shaft; 311-a first mating end shaft; 32-a second output shaft; 321-a second mating end shaft; 322-inner concave circular groove; 33-a thrust bearing; 34-rolling bearings; 35-support bearings;
40-a housing; 50-a first drive component; 51-second drive member.
Detailed Description
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, the present embodiment first provides a reduction mechanism, including: a first reduction gear unit 10, a second reduction gear unit 20, and an output shaft assembly 30; the output shaft assembly 30 comprises a first output shaft 31 and a second output shaft 32 which are coaxially arranged in a matching manner, and the first output shaft 31 can rotate relative to the second output shaft 32; the first reduction gear unit 10 is in driving connection with a first output shaft 31, and the second reduction gear unit 20 is in driving connection with a second output shaft 32.
The transmission power of two speed reducing devices (a first speed reducing device 10 and a second speed reducing device 20) in the speed reducing mechanism can respectively drive two output shafts (a first output shaft 31 and a second output shaft 32) of an output shaft assembly 30, the first output shaft 31 and the second output shaft 32 are matched together and can have different rotating speeds and torques under the driving of the two speed reducing devices, the first output shaft 31 and the second output shaft 32 can be respectively connected with different parts (in the embodiment, the parts connected with the first output shaft 31 and the second output shaft 32 are wheels) to carry out independent transmission, so that different outputs of the same speed reducing mechanism and high integration of the speed reducing mechanism are realized.
With reference to fig. 2 and 3, in the present embodiment, a thrust bearing 33 is further disposed between the first output shaft 31 and the second output shaft 32, one end of the thrust bearing 33 abuts against the first output shaft 31, and the other end abuts against the second output shaft 32; the first output shaft 31 rotates relative to the second output shaft 32 via a thrust bearing 33. The arrangement of the thrust bearing 33 can reduce the friction between the first output shaft 31 and the second output shaft 32 at different rotating speeds, and reduce the abrasion and heat generation problems of the first output shaft 31 and the second output shaft 32. The thrust bearing 33 mainly receives the axial force of the first output shaft 31 and the second output shaft 32.
Further, the first output shaft 31 has a first matching end shaft 311, the second output shaft 32 has a second matching end shaft 321, the second matching end shaft 321 is formed with an inner concave circular groove 322, the first matching end shaft 311 is inserted into the inner concave circular groove 322, the thrust bearing 33 is sleeved on the first matching end shaft 311, one end of the thrust bearing 33 abuts against a shaft shoulder of the first matching end shaft 311, and the other end abuts against an end portion of the second matching end shaft 321. Through the nested setting of second cooperation stub axle 321 and second cooperation stub axle 321, further reduced the axial dimension after both cooperations, saved installation space, thrust bearing 33 sets up on the shaft shoulder of first cooperation stub axle 311 moreover, and stability is stronger.
Further, a rolling bearing 34 is disposed between the first mating end shaft 311 and the second mating end shaft 321, an inner ring of the rolling bearing 34 is sleeved on an outer circumferential surface of the first mating end shaft 311, and an outer ring of the rolling bearing 34 is matched with a circular inner surface of the inner concave circular groove 322. By providing the rolling bearing 34, the coaxiality of the first output shaft 31 and the second output shaft 32 can be further improved, and the overall stability of the reduction mechanism can be enhanced. The rolling bearing 34 mainly receives the radial force of the first output shaft 31 and the second output shaft 32.
As the rolling bearing 34, a roller bearing may be used, and preferably, the roller of the roller bearing is a cylindrical roller, that is, the rolling bearing 34 is a needle bearing. The type of the needle bearing can be selected according to the actual installation size.
In the present embodiment, the first reduction gear unit 10 and the second reduction gear unit 20 are both multi-speed transmission, i.e., are subjected to multiple gear changes. The specific arrangement of the gears is not described in detail here, and the skilled person can set the transmission ratio according to the actual requirements.
The present embodiment further provides a transmission including a case 40 and the speed reducing mechanism of the present embodiment, the speed reducing mechanism being provided in the case 40. It will be apparent to those skilled in the art that the speed reducing mechanism of the present embodiment can be applied to other transmission systems as required. The housing 40 may be formed of two parts, and the reduction mechanism is enclosed therein by fitting with each other, and the housing 40 not only has a function of protecting the reduction mechanism, but also sets the mounting positions of the respective gear shafts in the reduction mechanism.
Wherein, the first output shaft 31 and the second output shaft 32 are both provided with a support bearing 35, and the support bearing 35 is arranged on the housing 40. The support bearing 35 can ensure the stability of the rotation of the first output shaft 31 and the second output shaft 32, and the support bearing 35 can be a tapered roller bearing. Because the first output shaft 31 and the second output shaft 32 are coaxially matched by adopting the rolling bearing 34 and the thrust bearing 33, the speed reducing mechanism is more convenient to arrange the shell 40, the problem that the support bearing 35 cannot be supported by the shell 40 is solved, and the differential working condition of the left output end and the right output end can be realized.
Referring to fig. 4, the present embodiment further provides a driving device, which includes a first driving component 50, a second driving component 51 and the transmission provided in the present embodiment, wherein the first speed reducer 10 is in transmission connection with the first driving component 50, and the second speed reducer 20 is in transmission connection with the second driving component 51. The first driving member 50 and the second driving member 51 may be both motors, and driving members of other energy forms such as hydraulic motors may be selected according to requirements.
Wherein the first drive member 50 and the second drive member 51 are located at two ends of the gearbox, respectively; referring to fig. 5, a connection line of the circle center of the shaft end of the first driving part 50, the circle center of the shaft end of the output shaft assembly 30 and the circle center of the shaft end of the second driving part 51 in a plane forms a predetermined included angle β. The preset included angle beta can be set according to actual installation requirements so as to achieve reasonable space distribution.
The driving device can be used for a new energy electric vehicle, the first output shaft 31 and the second output shaft 32 are respectively connected with two wheels, and power transmission paths of the two wheels are shown in the arrow direction in fig. 4, so that the wheels can realize different rotating speeds, and the vehicle can turn. And the driving device has compact structure, can effectively reduce the size of the driving device in the wheel track direction, and is favorable for carrying the whole vehicle. Of course, the drive device can also be used for other devices which need to transmit different rotating speeds and torques.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. A speed reducing mechanism, comprising: a first reduction gear (10), a second reduction gear (20), and an output shaft assembly (30);
the output shaft assembly (30) comprises a first output shaft (31) and a second output shaft (32) which are coaxially arranged in a matched mode, and the first output shaft (31) can rotate relative to the second output shaft (32);
the first speed reduction device (10) is in transmission connection with the first output shaft (31), and the second speed reduction device (20) is in transmission connection with the second output shaft (32).
2. The reduction mechanism according to claim 1, wherein a thrust bearing (33) is provided between the first output shaft (31) and the second output shaft (32), one end of the thrust bearing (33) abutting against the first output shaft (31) and the other end abutting against the second output shaft (32);
the first output shaft (31) rotates relative to the second output shaft (32) through the thrust bearing (33).
3. The reduction mechanism according to claim 2, wherein the first output shaft (31) has a first engagement end shaft (311), the second output shaft (32) has a second engagement end shaft (321), the second engagement end shaft (321) is formed with an inner concave circular groove (322), and the first engagement end shaft (311) is inserted into the inner concave circular groove (322);
the thrust bearing (33) is sleeved on the first matching end shaft (311), one end of the thrust bearing (33) abuts against a shaft shoulder of the first matching end shaft (311), and the other end of the thrust bearing (33) abuts against the end of the second matching end shaft (321).
4. The reduction mechanism according to claim 3, wherein a rolling bearing (34) is disposed between the first mating end shaft (311) and the second mating end shaft (321), an inner ring of the rolling bearing (34) is fitted over an outer circumferential surface of the first mating end shaft (311), and an outer ring of the rolling bearing (34) is fitted over a circular inner surface of the inner concave circular groove (322).
5. The reduction mechanism according to claim 4, characterized in that the rolling bearing (34) is a needle bearing.
6. The reduction mechanism according to claim 1, characterized in that the first reduction gear (10) and the second reduction gear (20) are each a multi-speed transmission.
7. A gearbox comprising a housing (40) and a reduction mechanism according to any one of claims 1 to 6, said reduction mechanism being disposed within said housing (40).
8. Gearbox according to claim 7, characterised in that a support bearing (35) is arranged on both the first output shaft (31) and the second output shaft (32), which support bearing (35) is arranged on the housing (40).
9. A drive arrangement, characterized by a first drive member (50) and a second drive member (51) and a gearbox according to any of claims 7-8, the first reduction (10) being in driving connection with the first drive member (50) and the second reduction (20) being in driving connection with the second drive member (51).
10. A drive arrangement according to claim 9, characterised in that the first drive member (50) and the second drive member (51) are located at each end of the gearbox;
and the connection line of the circle center of the shaft end of the first driving component (50), the circle center of the shaft end of the output shaft component (30) and the circle center of the shaft end of the second driving component (51) in a plane forms a preset included angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020912681.XU CN212455431U (en) | 2020-05-26 | 2020-05-26 | Speed reduction mechanism, transmission case, and drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020912681.XU CN212455431U (en) | 2020-05-26 | 2020-05-26 | Speed reduction mechanism, transmission case, and drive device |
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| Publication Number | Publication Date |
|---|---|
| CN212455431U true CN212455431U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020912681.XU Active CN212455431U (en) | 2020-05-26 | 2020-05-26 | Speed reduction mechanism, transmission case, and drive device |
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| CN (1) | CN212455431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023522814A (en) * | 2022-02-21 | 2023-06-01 | 浙江吉利控股集団有限公司 | Vehicle power transmission system and vehicle power system |
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2020
- 2020-05-26 CN CN202020912681.XU patent/CN212455431U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023522814A (en) * | 2022-02-21 | 2023-06-01 | 浙江吉利控股集団有限公司 | Vehicle power transmission system and vehicle power system |
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