CN218408387U - High-speed-ratio gearbox - Google Patents
High-speed-ratio gearbox Download PDFInfo
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- CN218408387U CN218408387U CN202222424656.9U CN202222424656U CN218408387U CN 218408387 U CN218408387 U CN 218408387U CN 202222424656 U CN202222424656 U CN 202222424656U CN 218408387 U CN218408387 U CN 218408387U
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Abstract
The utility model discloses a high-speed-ratio gearbox, which comprises a speed changer and a speed reducer which are arranged in a gearbox shell, wherein a driving motor is connected with the speed changer; the transmission system mainly comprises an input shaft, a main shaft, two intermediate shafts, an output shaft, six pairs of gear shifting gear pairs, a normally meshed gear pair and a primary reduction gear pair. A first gear shifting actuating mechanism and a second gear shifting actuating mechanism are installed on the main shaft. The speed reducer is composed of a first-stage reduction gear pair and is arranged at the power rear end of the gearbox. The utility model discloses have four and keep off the velocity ratio, one keeps off the moment of torsion ability reinforce, keeps off simple structure for four, the good reliability, compact structure has lightweight advantage concurrently.
Description
Technical Field
The utility model belongs to the technical field of automobile parts, a big velocity ratio gearbox is related to.
Background
At present, under the background of energy conservation, consumption reduction and electromotion, a gearbox is used as a key part assembly on an automobile, the application range of the gearbox is narrow, but the gearbox still plays an irreplaceable role in the field of heavy-load commercial vehicles such as dump trucks. The low-speed motor is mostly configured to traditional gearbox, uses the transmission system of low-speed motor as the power supply, and its output speed is low, and under the limited condition of derailleur speed ratio scope, whole output speed can not satisfy the market demand, and the solution can be followed motor and derailleur two aspects and optimized, an: the output rotating speed of the motor is improved, namely the high-speed motor can be used, but the sizes of related parts such as a rotor and a stator of the high-speed motor are increased compared with those of a lower-speed motor, which means that the weight is large, the cost is high, the rotating speed of the motor cannot be improved infinitely, and the rotating speed range of each type of motor is wide; and b, optimizing a transmission system of the transmission, wherein the transmission system can be integrated in structure, gears and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a big velocity ratio gearbox, the whole velocity ratio of increase gearbox, the high-speed little torque motor of adaptation have the characteristics that effectively reduce power assembly weight and cost.
The technical scheme adopted by the utility model is that the high-speed-ratio gearbox comprises a speed changer and a speed reducer which are arranged in a gearbox shell, and a driving motor is connected with the speed changer; the transmission shafting includes:
an input shaft; one end of the input shaft is connected with a driving motor, and the other end of the input shaft is provided with a normally meshed driving gear;
a main shaft; the main shaft and the input shaft are coaxially arranged, and a first-gear pair driven gear, a second-gear pair driven gear and a third-gear pair driven gear are sequentially arranged on the main shaft; the driven gear of the first gear pair, the driven gear of the second gear pair and the driven gear of the third gear pair are sleeved on the main shaft in a null manner;
a first intermediate shaft; a first-gear pair driving gear I, a second-gear pair driving gear I, a third-gear pair driving gear I and a normally meshed driven gear I are fixedly installed on the first intermediate shaft in sequence;
a second intermediate shaft; a first-gear pair driving gear II, a second-gear pair driving gear II, a third-gear pair driving gear II and a normally meshed driven gear II are fixedly mounted on the second intermediate shaft in sequence;
the first gear shifting actuating mechanism is arranged on the main shaft in a meshing sleeve mode and is positioned between the driven gear of the first gear pair and the driven gear of the second gear pair; the second gear shifting actuating mechanism meshing sleeve is arranged on the main shaft and is positioned between the driven gear of the third gear pair and the tail end of the input shaft;
the speed reducer consists of a primary speed reduction gear pair and is arranged at the power rear end of the gearbox; the first-gear pair driving gear I and the first-gear pair driving gear II are respectively meshed with a first-gear pair driven gear; a driving gear I of the secondary gear pair and a driving gear II of the secondary gear pair are respectively meshed with a driven gear of the secondary gear pair; the driving gear I and the driving gear II of the third-gear pair are respectively meshed with a driven gear of the third-gear pair; the normally meshed driven gear I and the normally meshed driven gear II are meshed with the normally meshed driving gear respectively.
Further, the first intermediate shaft and the second intermediate shaft are symmetrically arranged on two sides of the main shaft.
Furthermore, the first-stage reduction gear pair comprises an output-stage driving gear and an output-stage driven gear which are meshed with each other; the output stage driving gear is fixedly arranged on the main shaft, and the output stage driven gear is fixedly arranged on the output shaft.
Further, when the main shaft is connected with the input shaft, a direct gear is adopted, and the speed ratio range of the direct gear is 1.5-3.
Further, the transmission first gear ratio range is 12-28.
Further, each gear is a helical gear.
The utility model has the advantages that:
the utility model discloses a two jackshaft structures, the moment of torsion ability is strong. The utility model discloses have four and keep off the velocity ratio, one keeps off the moment of torsion ability reinforce, keeps off simple structure for four, and the good reliability, compact structure has lightweight advantage concurrently. The utility model discloses increase one-level gear pair at gearbox power front end, increase the whole velocity ratio of gearbox, the high-speed little torque motor of adaptation can effective control power assembly weight and cost.
Drawings
FIG. 1 is a schematic view of the overall structure of the high-speed ratio transmission of the present invention;
FIG. 2 is a diagram of the power transmission route of the big-ratio transmission case of the present invention under condition 1;
FIG. 3 is a power transmission route diagram of the big ratio transmission operating mode 2 of the present invention;
FIG. 4 is a diagram of the power transmission route of the big ratio transmission operating mode 3 of the present invention;
fig. 5 is the utility model discloses 4 power transmission route diagrams of big velocity ratio gearbox operating mode.
In the figure, 1, a driving motor, 2, an input shaft, 3, a normally meshed driving gear, 4, a first intermediate shaft, 5, a normally meshed driven gear I,6, a second gear shifting executing mechanism, 7, a driven gear of a third-gear pair, 8, a driving gear I of the third-gear pair, 9, a driving gear I of a second-gear pair; 10. the gear shifting device comprises a second gear pair driven gear, 11, a first gear shifting executing mechanism, 12, first gear pair driving gears I and 13, a first gear pair driven gear, 14, an output stage driving gear, 15, a main shaft, 16, an output stage driven gear, 17, an output shaft, 18, a second intermediate shaft, 19, first gear pair driving gears II and 20, a second gear pair driving gear II and 21, third gear pair driving gears II and 22 and a normally meshed driven gear II.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1: a high-speed-ratio gearbox comprises a speed changer and a speed reducer which are arranged in a gearbox shell, wherein a driving motor 1 is connected with the speed changer; the transmission shafting includes:
an input shaft 2; one end of the input shaft 2 is connected with the driving motor 1, and the other end is provided with a normally meshed driving gear 3;
a main shaft 15; the main shaft 15 is coaxially arranged with the input shaft 2, and a first-gear pair driven gear 13, a second-gear pair driven gear 10 and a third-gear pair driven gear 7 are sequentially arranged on the main shaft 15; the first gear pair driven gear 13, the second gear pair driven gear 10 and the third gear pair driven gear 7 are sleeved on the main shaft 15 in an empty way; the hollow gear is fixed by the rotation of the shaft, and the rotation of the gear can not drive the shaft to rotate; the gears are sleeved on the shaft in an idle mode, when the shaft rotates, the gears are not shifted to corresponding gears, and the idle gears in the corresponding power transmission lines cannot transmit power; when the gear is shifted, the gear shifting mechanism is fixedly connected with the corresponding gear, the gear drives the gear shifting mechanism to rotate, and the gear shifting mechanism drives the shaft to rotate to transmit power. The hollow gear can realize complete output of the power transmission line under the corresponding gear through gear shifting of the gear shifting mechanism.
A first intermediate shaft 4; a first-gear pair driving gear I12, a second-gear pair driving gear I9, a third-gear pair driving gear I8 and a normally meshed driven gear 15 are fixedly mounted on the first intermediate shaft 4 in sequence;
a second intermediate shaft 18; a first-gear pair driving gear II19, a second-gear pair driving gear II20, a third-gear pair driving gear II21 and a normally meshed driven gear II22 are fixedly mounted on the second intermediate shaft 18 in sequence; except for direct gear, power is output from the normally meshed driving gear 3, is input to the normally meshed driven gear I5 and the normally meshed driven gear II22 in a shunting manner, drives the two intermediate shafts to rotate, realizes the integrity of power transmission routes of other gears, and ensures that the power under the corresponding route is not interrupted after gear shifting.
The first gear shifting actuating mechanism 11 is arranged on the main shaft 15 in a meshing sleeve mode and is positioned between the driven gear 13 of the first gear pair and the driven gear 10 of the second gear pair; the second gear shifting actuating mechanism 6 is arranged on the main shaft 15 and positioned between the driven gear 7 of the third gear pair and the tail end of the input shaft 2; only one of the two gear shifting executing mechanisms works independently at the same time, namely when one gear shifting executing mechanism acts, the other gear shifting executing mechanism is in a neutral gear state. Therefore, the purpose that one gear shifting executing mechanism controls the gear shifting of the first gear and the second gear and the other gear shifting executing mechanism controls the gear shifting of the third gear and the fourth gear is achieved.
The speed reducer consists of a primary speed reduction gear pair and is arranged at the power rear end of the gearbox; the first-gear pair driving gear I12 and the first-gear pair driving gear II19 are respectively meshed with the first-gear pair driven gear 13; a driving gear I9 of the secondary gear pair and a driving gear II20 of the secondary gear pair are respectively meshed with a driven gear 10 of the secondary gear pair; the driving gear I8 of the third-gear pair and the driving gear II21 of the third-gear pair are respectively meshed with the driven gear 7 of the third-gear pair; the normally meshed driven gear I5 and the normally meshed driven gear II22 are meshed with the normally meshed driving gear 3 respectively to achieve power splitting.
The first intermediate shaft 4 and the second intermediate shaft 18 are symmetrically arranged on two sides of the main shaft, and are installed in a pressurizing mode through integrated shafts.
The first reduction gear pair includes an output stage driving gear 14 and an output stage driven gear 16 which are engaged with each other; an output stage drive gear 14 is fixedly mounted on the main shaft 15, and an output stage driven gear 16 is fixedly mounted on an output shaft 17.
When the main shaft 15 is connected with the input shaft 2, the direct gear is adopted, and the speed ratio range of the direct gear is 1.5-3.
The first gear speed ratio range of the gearbox is 12-28. Each gear is a helical gear.
The utility model discloses gearbox power transmission route has following 4:
working condition 1: as shown in fig. 2, the first shift actuator 11 is engaged with the first gear pair driven gear 13, the second shift actuator 6 is in neutral, the driving motor 1 outputs power, the power is sequentially split to the first intermediate shaft 4 and the second intermediate shaft 18 through the input shaft 2 and the normally meshed gear pair (normally meshed driven gear I5, normally meshed driven gear II22 and normally meshed driving gear 3), the first intermediate shaft 4 drives the first gear pair driving gear I12 to rotate, the second intermediate shaft 18 drives the first gear pair driving gear II19 to rotate, the power of the two first gear driving gears is combined and transmitted to the first gear pair driven gear 13, the power is output from the main shaft 15, and the power output from the main shaft 15 is transmitted to the output shaft 17 through the output stage driving gear 14 and the output stage driven gear 16 to output.
Working condition 2: as shown in fig. 3, the first gear shift actuator 11 is engaged with the driven gear 10 of the secondary gear pair, the second gear shift actuator 6 is in neutral, the driving motor 1 outputs power, the power is sequentially split to the first intermediate shaft 4 and the second intermediate shaft 18 through the input shaft 2 and the normally meshed gear pair (normally meshed driven gear I5, normally meshed driven gear II22 and normally meshed driving gear 3), the first intermediate shaft 4 drives the driving gear I9 of the secondary gear pair to rotate, the second intermediate shaft 18 drives the driving gear II20 of the secondary gear pair to rotate, the power of the two secondary driving gears is converged and transmitted to the driven gear 10 of the secondary gear pair, the power is output from the main shaft 15, and the power output by the main shaft 15 is transmitted to the output shaft 17 through the output-stage driving gear 14 and the output-stage driven gear 16 to output.
Working condition 3: as shown in fig. 4, the first shift actuator 11 is in a neutral gear, the second shift actuator 6 is engaged with the driven gear 7 of the third gear pair, the driving motor 1 outputs power, the power is sequentially split into the first intermediate shaft 4 and the second intermediate shaft 18 through the input shaft 2 and the normally meshed gear pair (the normally meshed driven gear I5, the normally meshed driven gear II22 and the normally meshed driving gear 3), the first intermediate shaft 4 drives the driving gear I8 of the third gear pair to rotate, the second intermediate shaft 18 drives the driving gear II21 of the third gear pair to rotate, the power of the two third gear driving gears is combined and transmitted to the driven gear 7 of the third gear pair, the power is output from the main shaft 15, and the power output from the main shaft 15 is transmitted to the output shaft 17 through the output-stage driving gear 14 and the output-stage driven gear 16 to output.
Working condition 4: as shown in fig. 5, the second shift actuator engages with the normally meshed driving gear, the first shift actuator is in neutral, the input shaft 2 is fixedly connected with the main shaft 15, and the power output by the power main shaft 15 and output by the driving motor 1 is transmitted to the output shaft 17 through the output stage driving gear 14 and the output stage driven gear 16.
Claims (6)
1. A high-speed-ratio gearbox is characterized by comprising a speed changer and a speed reducer which are arranged in a gearbox shell, wherein a driving motor (1) is connected with the speed changer; the transmission shafting includes:
an input shaft (2); one end of the input shaft (2) is connected with the driving motor (1), and the other end is provided with a normally meshed driving gear (3);
a main shaft (15); the main shaft (15) and the input shaft (2) are coaxially arranged, and a first-gear pair driven gear (13), a second-gear pair driven gear (10) and a third-gear pair driven gear (7) are sequentially arranged on the main shaft (15); the first gear pair driven gear (13), the second gear pair driven gear (10) and the third gear pair driven gear (7) are sleeved on the main shaft (15) in an empty way;
a first intermediate shaft (4); a first-gear pair driving gear I (12), a second-gear pair driving gear I (9), a third-gear pair driving gear I (8) and a normally meshed driven gear I (5) are fixedly mounted on the first intermediate shaft (4) in sequence;
a second intermediate shaft (18); a first-gear pair driving gear II (19), a second-gear pair driving gear II (20), a third-gear pair driving gear II (21) and a normally meshed driven gear II (22) are fixedly arranged on the second intermediate shaft (18) in sequence;
the first gear shifting actuating mechanism (11) is arranged on the main shaft (15) in a meshing sleeve mode and is positioned between the driven gear (13) of the first gear pair and the driven gear (10) of the second gear pair; the second gear shifting actuating mechanism (6) is arranged on the main shaft (15) in a meshing sleeve mode and is positioned between the driven gear (7) of the third gear pair and the tail end of the input shaft (2);
the speed reducer consists of a primary speed reduction gear pair and is arranged at the power rear end of the gearbox; a first gear auxiliary driving gear I (12) and a first gear auxiliary driving gear II (19) are respectively meshed with a first gear auxiliary driven gear (13); a driving gear I (9) and a driving gear II (20) of the secondary gear pair are respectively meshed with a driven gear (10) of the secondary gear pair; a driving gear I (8) of the third-gear pair and a driving gear II (21) of the third-gear pair are respectively meshed with a driven gear (7) of the third-gear pair; the normally meshed driven gear I (5) and the normally meshed driven gear II (22) are respectively meshed with the normally meshed driving gear (3).
2. A high ratio gearbox according to claim 1, in which the first intermediate shaft (4) and the second intermediate shaft (18) are arranged symmetrically on either side of the main shaft.
3. A high ratio gearbox according to claim 1 wherein said primary reduction gear set comprises an output stage drive gear (14) and an output stage driven gear (16) in mesh with each other; an output stage driving gear (14) is fixedly arranged on the main shaft (15), and an output stage driven gear (16) is fixedly arranged on an output shaft (17).
4. A high ratio gearbox according to claim 1 wherein the main shaft (15) is in direct gear engagement with the input shaft (2), the direct gear ratio being in the range 1.5 to 3.
5. A high ratio transmission according to claim 1, wherein the transmission first gear ratio range is 12 to 28.
6. A high ratio gearbox according to claim 1 wherein each gear is a helical gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222424656.9U CN218408387U (en) | 2022-09-14 | 2022-09-14 | High-speed-ratio gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222424656.9U CN218408387U (en) | 2022-09-14 | 2022-09-14 | High-speed-ratio gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218408387U true CN218408387U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222424656.9U Active CN218408387U (en) | 2022-09-14 | 2022-09-14 | High-speed-ratio gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218408387U (en) |
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2022
- 2022-09-14 CN CN202222424656.9U patent/CN218408387U/en active Active
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