CN211371173U - Compact multi-speed transmission and vehicle - Google Patents
Compact multi-speed transmission and vehicle Download PDFInfo
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- CN211371173U CN211371173U CN201920765089.9U CN201920765089U CN211371173U CN 211371173 U CN211371173 U CN 211371173U CN 201920765089 U CN201920765089 U CN 201920765089U CN 211371173 U CN211371173 U CN 211371173U
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Abstract
The utility model provides a derailleur and vehicle of many grades of compact, including input shaft, output shaft, gear auxiliary unit, first jackshaft gear train, second jackshaft gear train and central axle. The gear pair comprises an input/output gear and a gear pair of a common gear, a second input gear and a gear pair of a first input gear, a gear pair of a central input gear and a first central gear, a gear pair of a second central gear and a central output gear, and a gear pair of a second output gear and a first output gear, wherein the gear ratios of the five gear pairs are different, and the five gear pairs are combined with clutch operation of three clutches, so that the five gear pairs have the purpose of switching eight gears. Therefore, the length dimension of the transmission is reduced relative to the prior transmission in structural arrangement, the space for installing the transmission is saved, and the production cost of the transmission is reduced.
Description
Technical Field
The utility model relates to a derailleur field especially relates to transmission and vehicle of many grades of compact.
Background
The transmission is a set of transmission devices for coordinating the rotational speed of the engine and/or the motor with the actual running speed of the wheels for optimum performance of the engine and/or the motor. The transmission can produce different transmission ratios between the engine and/or the electric machine and the wheels during driving of the vehicle. However, in the conventional eight-gear automobile, the eight-gear transmission needs to be engaged by eight sets of gear pairs, so as to achieve the eight-gear shift. The size of the existing transmission is large, the power transmission path of the existing eight-gear transmission is not unique, the gear shifting mechanism is mostly a synchronizer or a shifting fork structure, and when the gear shifting is carried out, the time gap of the gear shifting is long.
SUMMERY OF THE UTILITY MODEL
Therefore, a compact multi-gear transmission needs to be provided, and the problem that the size of the existing transmission is large is solved.
To achieve the above object, the inventors provide a compact multi-speed transmission comprising an input shaft, an output shaft, a gear pair unit, a first countershaft gear set, a second countershaft gear set and a central shaft; the input shaft is provided with a first input gear, the output shaft is provided with a first output gear, the central shaft is provided with a first central gear and a second central gear, the driving part of the gear pair unit is arranged on the input shaft and/or the central shaft, and the gear pair unit is positioned between the first input gear and the first central gear; the linkage part of the gear pair unit is arranged on a main shaft of a first intermediate shaft gear set, the first intermediate shaft gear set is used for being meshed with a first input gear, a driving part of the gear pair unit and a first central gear respectively to form gear pair transmission, and the second intermediate shaft gear set is used for being meshed with a second central gear and a first output gear respectively to form gear pair transmission; the gear pair unit is used for transmitting the power of the input shaft to the first intermediate shaft gear set and/or transmitting the power on the first intermediate shaft gear set to the central shaft; a first clutch is arranged on an input shaft between the first input gear and the gear pair unit, a first clutch end of the first clutch is arranged on the first input gear, and a second clutch end of the first clutch is arranged on the gear pair unit; a second clutch is arranged on a central shaft between the gear pair unit and the first central gear, a first clutch end of the second clutch is arranged on the gear pair unit, and a second clutch end of the second clutch is arranged on the first central gear; a third clutch is arranged on the output shaft between the second central gear and the first output gear, a first clutch end of the third clutch is arranged on the second central gear, and a second clutch end of the third clutch is arranged on the first output gear; the rotating speed of the input shaft is greater than, equal to or less than that of the output shaft.
Further, the first countershaft gear set includes a drive countershaft, a second input gear and a central input gear; the second input gear and the central input gear are sequentially arranged on the transmission intermediate shaft, the second input gear is meshed with the first input gear, and the central input gear is meshed with the first central gear.
Further, the gear pair unit includes a common gear and an input-output gear; the common gear is arranged on the input shaft and/or the central shaft, the common gear is positioned between the first input gear and the first central gear, the input and output gear is arranged on the transmission intermediate shaft, the input and output gear is positioned between the second input gear and the central input gear, and the input and output gear is meshed with the common gear.
Further, the gear pair unit comprises a first transmission gear, a second transmission gear, a first linkage gear and a second linkage gear; the first transmission gear is arranged on the input shaft, the first linkage gear is arranged on the central shaft, the second transmission gear is arranged on a transmission intermediate shaft between the second input gear and the second linkage gear, and the second linkage gear is arranged on the transmission intermediate shaft between the second transmission gear and the central input gear; the first clutch is located between the first transmission gear and the first input gear, the second clutch is located between the first linkage gear and the first central gear, the first transmission gear and the second transmission gear are meshed with each other, and the first linkage gear and the second linkage gear are meshed with each other.
Further, the number of the transmission intermediate shafts is multiple, and the multiple transmission intermediate shafts are arranged around the input shaft.
Further, the second countershaft gear set includes an output countershaft, a central output gear, and a second output gear; the central output gear and the second output gear are sequentially arranged on the output intermediate shaft, the central output gear is meshed with the second central gear, and the second output gear is meshed with the first output gear.
Further, the number of the output intermediate shafts is multiple, and the multiple output intermediate shafts are arranged around the output shaft.
The gearbox further comprises a shell, wherein the shell is used for accommodating the input shaft, the output shaft, the central shaft, the first intermediate shaft gear set and the second intermediate shaft gear set, and the gear pair on the input shaft, the output shaft and the central shaft.
The inventor also provides a vehicle with a compact multi-gear transmission, which comprises the transmission and a vehicle body, wherein the transmission is the transmission in the above; the transmission is connected with an engine and/or a motor in the vehicle body and used for switching the rotating speed and the torque of the engine and/or the motor of the vehicle body.
Different from the prior art, the power transmission path of the technical scheme is as follows: the gear shifting device comprises an input shaft, a first intermediate shaft gear set, a central shaft, a second intermediate shaft gear set and an output shaft, namely power is input through the input shaft and is finally output through the output shaft, and the purpose of gear shifting is achieved through gear pairs and clutches on the shafts. The central axis of the input shaft, the central axis of the output shaft and the central axis of the central shaft are collinear, the central axis of the main shaft of the first intermediate shaft gear set is parallel to the central axis of the input shaft, and the central axis of the main shaft of the second intermediate shaft gear set is parallel to the central axis of the output shaft in the same way, so that the length size of the transmission is reduced compared with the existing transmission in structural arrangement, the area of the cross section is not increased, the overall size of the transmission is reduced, the space for installing the transmission is saved, and the production cost of the transmission is reduced.
Drawings
FIG. 1 is a schematic illustration of a gear pair unit comprising a set of gear pairs of a compact multiple speed transmission according to one embodiment;
FIG. 2 is a schematic illustration of a compact multiple speed transmission having two gear pairs as a gear pair unit in accordance with an exemplary embodiment;
FIG. 3 is a schematic illustration of a vehicle having a compact, multiple speed transmission according to a second embodiment.
Description of reference numerals:
1. a transmission; 2. a vehicle body;
10. an input shaft; 11 a first input gear;
20. an output shaft; 21. a first output gear;
30. a gear sub unit; 301. a common gear; 302. an input output gear;
311. a first drive gear; 312. a second transmission gear; 313. a first linkage gear;
314. a second linkage gear;
40. a first countershaft gear set; 41. a transmission intermediate shaft; 42. a second input gear;
43. a central input gear;
50. a second countershaft gear set; 51. an output intermediate shaft; 52. a central output gear;
53. a second output gear;
60. a central shaft; 61. a first sun gear; 62. a second sun gear;
70. a first clutch; 80. a second clutch; 90. a third clutch; 100. a housing;
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
The first embodiment,
Referring to fig. 1 and 2, the present embodiment provides a compact multi-speed transmission, which includes an input shaft 10, an output shaft 20, a gear pair unit 30, a first countershaft gear set 40, a second countershaft gear set 50, and a central shaft 60. The first input gear 11 is mounted on the input shaft, the first output gear 21 is mounted on the output shaft, and the first sun gear 61 and the second sun gear 62 are mounted on the central shaft. The gear pair unit comprises a driving part and a linkage part, the driving part is arranged on the input shaft and/or the central shaft, and the linkage part is arranged on the main shaft of the first central shaft gear set, so that the driving part and the linkage part form a gear pair to transmit power. The central axis of the input shaft, the central axis of the output shaft and the central axis of the central shaft are collinear, the central axis of the main shaft of the first intermediate shaft gear set is parallel to the central axis of the input shaft, and the central axis of the main shaft of the second intermediate shaft gear set is parallel to the central axis of the output shaft in the same way, so that the length size of the transmission is reduced compared with the existing transmission in structural arrangement, the area of the cross section is not increased, the overall size of the transmission is reduced, the space for installing the transmission is saved, and the production cost of the transmission is reduced.
A first clutch 70 is provided on the input shaft between the first input gear and the gear sub unit for clutching the first input gear and the gear sub unit. A second clutch 80 is provided on the central axis between the gear sub unit and the first sun gear, and is used for clutching the gear sub unit and the first sun gear. A third clutch 90 is arranged on the output shaft between the second sun gear and the first output gear, and is used for performing clutch operation on the second sun gear and the first output gear. Meanwhile, no matter the first clutch, the second clutch and the third clutch are in any closed state, the transmission only has one gear output, so that the only path of power transmission is realized.
In the present embodiment, the first clutch, the second clutch, and the third clutch may be any clutch structure such as a friction clutch, a torque converter (fluid coupling), a pneumatic clutch, a dog clutch, a synchronizer, or an electromagnetic clutch. Each clutch has two clutch ends, for example, the first clutch is operated to open or close through the first clutch end and the first input gear, and the first clutch is operated to open or close the common gear or the first transmission gear through the second clutch end, so as to realize the clutch operation of the two gear pairs.
The first countershaft gear set in this embodiment includes a drive countershaft 41, a second input gear 42 and a central input gear 43, and the gear pair unit includes a common gear 301 and an input output gear 302, the input output gear being mounted on the drive countershaft, the second input gear and the central input gear being sequentially disposed on the drive countershaft, the second input gear being disposed in meshing engagement with the first input gear, and the central input gear being disposed in meshing engagement with the first central gear. The common gear is arranged on the input shaft and/or the central shaft, the common gear is positioned between the first input gear and the first central gear, the input output gear is positioned between the second input gear and the central input gear, and the input output gear is meshed with the common gear.
Specifically, the first transmission path is: the first input gear is operated in an on state through the first clutch, and the common gear is operated in an off state, so that the power of the input shaft is transmitted into the transmission intermediate shaft through the gear pair of the first input gear and the second input gear. Meanwhile, the common gear is operated in an on state through the second clutch, and the first sun gear is operated in an off state, so that the power on the transmission intermediate shaft is transmitted to the central shaft through the gear pair of the common gear and the input and output gear.
The second transmission path is as follows: the first input gear is operated in an on state through the first clutch, and the common gear is operated in an off state, so that the power of the input shaft is transmitted into the transmission intermediate shaft through the gear pair of the first input gear and the second input gear. Meanwhile, the second clutch is used for carrying out off-state operation on the common gear and carrying out on-state operation on the first sun gear, so that the power on the transmission intermediate shaft is transmitted to the central shaft through the central input gear and the gear pair of the first sun gear.
The third transmission path is: the first input gear is operated in an off state and the common gear is operated in an on state by the first clutch, so that the power of the input shaft is transmitted to the transmission intermediate shaft via the gear pair of the common gear and the input/output gear. Meanwhile, the second clutch is used for carrying out on-state operation on the common gear, and the first sun gear is used for carrying out off-state operation, so that the power on the transmission intermediate shaft is directly transmitted to the central shaft through the common gear.
The fourth transmission path is: the first input gear is operated to be in a disengaged state and the common gear is operated to be in an engaged state by the first clutch, while the first sun gear is operated to be in an engaged state by the second clutch and the common gear is operated to be in an disengaged state, thereby allowing the power of the input shaft to be directly transmitted to the center shaft. That is, power is transmitted to the transmission intermediate shaft through the gear pair of the common gear and the input/output gear, and then transmitted to the central shaft through the gear pair of the central input gear and the first central gear.
Because the input and output gears are meshed with the common gear to form a gear pair, the second input gear is meshed with the first input gear to form a gear pair, the central input gear is meshed with the first central gear to form a gear pair, and the gear ratios of the three sets of gear pairs are different. Therefore, when power is transmitted to the central shaft, the rotating speeds of the central shaft are four, and the purpose of changing the rotating speeds of the three groups of gear pairs is achieved.
In yet another embodiment, the gear pair unit includes a first transmission gear 311, a second transmission gear 312, a first linkage gear 313 and a second linkage gear 314. The first transmission gear is arranged on the input shaft, the first linkage gear is arranged on the central shaft, the second transmission gear is arranged on a transmission intermediate shaft between the second input gear and the second linkage gear, and the second linkage gear is arranged on the transmission intermediate shaft between the second transmission gear and the central input gear. The first transmission gear and the second transmission gear are meshed with each other, and the first linkage gear and the second linkage gear are meshed with each other. Therefore, the first clutch is used for performing clutch operation on the first transmission gear and the first input gear, and the second clutch is used for performing clutch operation on the first linkage gear and the first central gear.
Specifically, the input shaft is provided with a first input gear and a first transmission gear, the transmission intermediate shaft is provided with a second input gear, a second transmission gear, a second linkage gear and a central input gear, wherein the second input gear is meshed with the first input gear to form a first input gear pair, the first transmission gear is meshed with the second transmission gear to form a second input gear pair, the second linkage gear and the first linkage gear on the central shaft form a first transmission gear pair, the central input gear and the first central gear on the central shaft form a second transmission gear pair, four groups of gear pairs are formed for transmission, and the gear ratios among the first input gear pair, the second input gear pair, the first transmission gear pair and the second transmission gear pair are different. Similarly, the clutch operation is carried out through the first clutch and the second clutch, so that the transmission between the four groups of gear pairs has four routes, the principle of the transmission is the same as that of the transmission, and the rotating speed on the central shaft has four changes.
In the embodiment, power on the central shaft is output through the second intermediate shaft gear set and the output shaft, or the output shaft is directly output, so that gear switching is realized. The second intermediate shaft gear set comprises an output intermediate shaft 51, a central output gear 52 and a second output gear 53, the central output gear and the second output gear are sequentially arranged on the output intermediate shaft, the central output gear is meshed with the second central gear, and the second output gear is meshed with the first output gear. A gear pair with a second central gear and a central output gear, and a gear pair with a second output gear and a first output gear. Thus, in conjunction with the second sun gear on the central shaft, there are two paths for power transmission between the second countershaft gearset and the output shaft.
Specifically, because the second sun gear is always in meshed transmission with the central output gear, the output intermediate shaft of the third clutch can be driven to rotate no matter the output intermediate shaft is in any state. The first transmission path is therefore: the second central gear is operated in an on state through the third clutch, and when the first output gear is operated in an off state, the power on the central shaft is directly transmitted to the output shaft. The second transmission path is as follows: when the third clutch is used for operating the second sun gear in an off state and the first output gear is used for operating the first output gear in an on state, the power on the second intermediate shaft gear set is transmitted to the output shaft through the gear pair of the second output gear and the first output gear. And because the gear ratio of the second sun gear to the sun output gear is different from the gear ratio of the second output gear to the first output gear, the output shaft has two rotation speeds for switching.
Through the above, it can be known that five or six gear pairs can be arranged in the whole transmission, the gear ratios of any two gear pairs of the five or six gear pairs are not equal, and the gear ratios in the embodiment are the gear ratios of the driving gear and the driven gear, so that the output shaft has eight rotational transformations by combining the four rotational speed switching of the middle input shaft, the first intermediate shaft gear set and the central shaft, the purpose that the rotational speed of the input shaft is not equal to the rotational speed of the output shaft is achieved, and the whole transmission achieves the effect of switching eight gears.
In the above embodiments, the number of the transmission intermediate shaft and the output intermediate shaft may be plural, such as two, three, or four. The plurality of transmission intermediate shafts and the plurality of output intermediate shafts can be respectively arranged around the input shaft and the output shaft, for example, the two transmission intermediate shafts can be respectively arranged at the upper position and the lower position of the input shaft, the two output intermediate shafts can be respectively arranged at the upper position and the lower position of the output shaft, and the plurality of transmission intermediate shafts or the plurality of output intermediate shafts have the same structure, for example, the same gear is arranged. Therefore, the loads of the input shaft and the output shaft can be distributed through the plurality of transmission intermediate shafts and the output intermediate shafts, and the bending strength of the input shaft, the transmission intermediate shafts, the output intermediate shafts and the output shaft is enhanced, so that the bearing capacity of the input shaft and the output shaft is improved, and the purpose of high load is achieved.
The embodiment further includes a housing 100, and the housing hermetically accommodates the input shaft, the output shaft, the central shaft, the first intermediate shaft gear set, the second intermediate shaft gear set, and the gear pair on the input shaft, the output shaft, and the central shaft. Prevent external dust, steam and the like from entering the shell, and prolong the service life of the transmission.
Example II,
Referring to fig. 3, the embodiment further provides a vehicle with a compact multi-gear transmission, which includes a transmission 1 and a vehicle body 2, the transmission is the transmission structure described in the first embodiment, the transmission is connected to an engine and/or a motor in the vehicle body, and the transmission is used for switching the rotation speed and the torque of the engine and/or the motor of the vehicle body. The vehicle body can be a mine vehicle body, a bus body, a car body, a truck body or a bus body and the like, and the transmission is connected through the shaft and can complete the action of shifting while clutching, so that the aim of shifting with high efficiency is fulfilled. The gear sets are all in a meshed state, the transmission ratio of the output shaft and the input shaft is changed through switching of the switching type double clutch, the problem that collision occurs between the gears is effectively avoided, and the service life of the transmission is prolonged and/or the service life of the whole vehicle is prolonged.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (9)
1. A compact, multiple-speed transmission characterized by: the gear pair unit comprises an input shaft, an output shaft, a gear pair unit, a first intermediate shaft gear set, a second intermediate shaft gear set and an intermediate shaft;
the input shaft is provided with a first input gear, the output shaft is provided with a first output gear, the central shaft is provided with a first central gear and a second central gear, the driving part of the gear pair unit is arranged on the input shaft and/or the central shaft, and the gear pair unit is positioned between the first input gear and the first central gear;
the linkage part of the gear pair unit is arranged on a main shaft of a first intermediate shaft gear set, the first intermediate shaft gear set is used for being meshed with a first input gear, a driving part of the gear pair unit and a first central gear respectively to form gear pair transmission, and the second intermediate shaft gear set is used for being meshed with a second central gear and a first output gear respectively to form gear pair transmission;
the gear pair unit is used for transmitting the power of the input shaft to the first intermediate shaft gear set and/or transmitting the power on the first intermediate shaft gear set to the central shaft;
a first clutch is arranged on an input shaft between the first input gear and the gear pair unit, a first clutch end of the first clutch is arranged on the first input gear, and a second clutch end of the first clutch is arranged on the gear pair unit;
a second clutch is arranged on a central shaft between the gear pair unit and the first central gear, a first clutch end of the second clutch is arranged on the gear pair unit, and a second clutch end of the second clutch is arranged on the first central gear;
a third clutch is arranged on the output shaft between the second central gear and the first output gear, a first clutch end of the third clutch is arranged on the second central gear, and a second clutch end of the third clutch is arranged on the first output gear;
the rotating speed of the input shaft is greater than, equal to or less than that of the output shaft.
2. A compact multiple speed transmission as defined in claim 1 wherein: the first countershaft gear set comprises a drive countershaft, a second input gear and a central input gear;
the second input gear and the central input gear are sequentially arranged on the transmission intermediate shaft, the second input gear is meshed with the first input gear, and the central input gear is meshed with the first central gear.
3. A compact multiple speed transmission as defined in claim 2 wherein: the gear pair unit comprises a common gear and an input and output gear;
the common gear is arranged on the input shaft and/or the central shaft, the common gear is positioned between the first input gear and the first central gear, the input and output gear is arranged on the transmission intermediate shaft, the input and output gear is positioned between the second input gear and the central input gear, and the input and output gear is meshed with the common gear.
4. A compact multiple speed transmission as defined in claim 2 wherein: the gear pair unit comprises a first transmission gear, a second transmission gear, a first linkage gear and a second linkage gear;
the first transmission gear is arranged on the input shaft, the first linkage gear is arranged on the central shaft, the second transmission gear is arranged on a transmission intermediate shaft between the second input gear and the second linkage gear, and the second linkage gear is arranged on the transmission intermediate shaft between the second transmission gear and the central input gear;
the first clutch is located between the first transmission gear and the first input gear, the second clutch is located between the first linkage gear and the first central gear, the first transmission gear and the second transmission gear are meshed with each other, and the first linkage gear and the second linkage gear are meshed with each other.
5. A compact multiple speed transmission as defined in claim 2 wherein: the number of the transmission intermediate shafts is multiple, and the multiple transmission intermediate shafts are arranged around the input shaft.
6. A compact multiple speed transmission as defined in claim 1 wherein: the second countershaft gear set includes an output countershaft, a central output gear, and a second output gear;
the central output gear and the second output gear are sequentially arranged on the output intermediate shaft, the central output gear is meshed with the second central gear, and the second output gear is meshed with the first output gear.
7. The compact, multiple speed transmission of claim 6, wherein: the number of output jackshafts is a plurality of, and a plurality of output jackshafts encircle the output shaft setting.
8. A compact multiple speed transmission as defined in claim 1 wherein: the gearbox is characterized by further comprising a shell, wherein the shell is used for accommodating the input shaft, the output shaft, the central shaft, the first intermediate shaft gear set, the second intermediate shaft gear set, the gear pair on the input shaft, the output shaft and the central shaft.
9. A vehicle with a compact multi-speed transmission is characterized by comprising the transmission and a vehicle body,
the transmission is as claimed in any one of claims 1 to 8;
the transmission is connected with an engine and/or a motor in the vehicle body and used for switching the rotating speed and the torque of the engine and/or the motor of the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765089.9U CN211371173U (en) | 2019-05-24 | 2019-05-24 | Compact multi-speed transmission and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920765089.9U CN211371173U (en) | 2019-05-24 | 2019-05-24 | Compact multi-speed transmission and vehicle |
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| CN211371173U true CN211371173U (en) | 2020-08-28 |
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| CN201920765089.9U Active CN211371173U (en) | 2019-05-24 | 2019-05-24 | Compact multi-speed transmission and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322362A (en) * | 2019-05-24 | 2020-06-23 | 福建中维动力科技股份有限公司 | Compact multi-speed transmission and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322362A (en) * | 2019-05-24 | 2020-06-23 | 福建中维动力科技股份有限公司 | Compact multi-speed transmission and vehicle |
| CN111322362B (en) * | 2019-05-24 | 2024-10-22 | 福建中维动力科技股份有限公司 | Compact multi-speed transmission and vehicle |
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