CN219975250U - Herringbone gear electric speed reducer and electric automobile - Google Patents
Herringbone gear electric speed reducer and electric automobile Download PDFInfo
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- CN219975250U CN219975250U CN202321336549.9U CN202321336549U CN219975250U CN 219975250 U CN219975250 U CN 219975250U CN 202321336549 U CN202321336549 U CN 202321336549U CN 219975250 U CN219975250 U CN 219975250U
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- gear
- intermediate shaft
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- herringbone
- speed reducer
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a herringbone gear electric speed reducer and an electric automobile, comprising a speed reducer shell provided with an inner cavity, wherein the speed reducer shell is formed by butting a left shell and a right shell, and an input shaft transmission assembly, a middle shaft transmission assembly and an output shaft transmission assembly are sequentially arranged in the inner cavity from left to right; the input shaft transmission assembly comprises an input shaft; the intermediate shaft transmission assembly comprises an intermediate shaft and an intermediate shaft transmission gear sleeved on the intermediate shaft; the output shaft transmission assembly comprises a differential mechanism and an output gear sleeved on the differential mechanism; the input shaft is meshed with the intermediate shaft transmission gear for transmission; the intermediate shaft is meshed with the output gear for transmission; the input shaft, the intermediate shaft transmission gear and the output gear are all herringbone gears.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment manufacturing, relates to a speed reducer, and in particular relates to a herringbone gear electric speed reducer and an electric automobile.
Background
The electric drive system of the pure electric passenger car generally consists of a driving motor, a motor controller and an electric speed reducer, and the existing electric speed reducer adopts a two-stage parallel shaft helical gear transmission structure, so that the parallel shaft helical gear speed reducer has the characteristics of simple structure, easiness in assembly, controllable cost and the like, but the requirements of the pure electric passenger car on the power density and the endurance mileage of the electric drive system are higher and higher, so that the improvement of the torque density must be considered when the electric speed reducer is designed.
The existing parallel shaft helical gear reducer has the problem that the design life of gears and bearings is required to be considered in design, so when the gear center distance and the tooth width of the large-torque reducer are large, tapered roller bearings are required to be selected for supporting the intermediate shaft and the output shaft in order to meet the axial force requirement, and if the axial force of the input shaft is large, deep groove ball bearings with large diameters are required to be selected for supporting, namely the existing parallel shaft helical gear electric reducer cannot be further optimized greatly in design, cannot meet the power density lifting requirement of an electric drive system, and needs to be improved.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the utility model aims to provide a herringbone gear electric speed reducer and an electric automobile, so as to solve the technical problem that the parallel shaft helical gear speed reducer in the prior art cannot meet the power density lifting requirement of an electric drive system.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the herringbone gear electric speed reducer comprises a speed reducer shell provided with an inner cavity, wherein the speed reducer shell is formed by butting a left shell and a right shell, and an input shaft transmission assembly, a middle shaft transmission assembly and an output shaft transmission assembly are sequentially arranged in the inner cavity from left to right;
the input shaft drive assembly includes an input shaft;
the intermediate shaft transmission assembly comprises an intermediate shaft and an intermediate shaft transmission gear sleeved on the intermediate shaft;
the output shaft transmission assembly comprises a differential mechanism and an output gear sleeved on the differential mechanism;
the input shaft is meshed with the intermediate shaft transmission gear for transmission; the intermediate shaft is meshed with the output gear for transmission; the axis of the input shaft, the axis of the intermediate shaft and the axis of the differential mechanism are arranged in parallel;
the input shaft, the intermediate shaft transmission gear and the output gear are all herringbone gears.
The utility model also has the following technical characteristics:
specifically, the two ends of the intermediate shaft are also sleeved with intermediate shaft bearings; input shaft bearings are sleeved at two ends of the input shaft; output shaft bearings are arranged at two ends of the differential mechanism.
Still further, the herringbone gear comprises a gear body, a first oblique gear ring and a second oblique gear ring, wherein the first oblique gear ring and the second oblique gear ring are arranged on the outer circumference of the gear body, the first oblique gear ring and the second oblique gear ring are symmetrically arranged relative to the central plane of the gear body, the spiral angles of the first oblique gear ring and the second oblique gear ring are opposite in rotation direction, and the tooth parts of the first oblique gear ring and the second oblique gear ring are correspondingly arranged.
Further, the herringbone gear comprises a first gear, a second gear and a connecting bolt, a first through hole is formed in the first gear, a second through hole is formed in the second gear, the first through hole and the second through hole are coaxially arranged, and the first gear and the second gear are connected through the connecting bolt penetrating through the first gear and the second gear;
the outer circumference of the first gear is provided with a third oblique gear ring, the outer circumference of the second gear is provided with a fourth oblique gear ring, the third oblique gear ring and the fourth oblique gear ring are symmetrically arranged relative to the center plane of the herringbone gear, the spiral angles of the third oblique gear ring and the fourth oblique gear ring are opposite in rotation direction, and the tooth parts of the third oblique gear ring and the fourth oblique gear ring are correspondingly arranged.
Furthermore, the input shaft bearing, the intermediate shaft bearing and the output shaft bearing are deep groove ball bearings.
Further, a processing tool retracting groove is formed in the outer wall of the gear body between the first inclined gear ring and the second inclined gear ring.
The utility model also provides an electric automobile, and the herringbone gear electric speed reducer is arranged on the electric automobile.
Compared with the prior art, the utility model has the following technical effects:
(1) The utility model adopts a two-stage parallel shaft herringbone gear structure design, namely, the input shaft is meshed with the intermediate shaft transmission gear for transmission, the intermediate shaft is meshed with the output gear for transmission, the structure is simple, the operation is convenient, the electric speed reducer adopts herringbone gear for transmission, and as the herringbone gear transmission engagement does not generate axial force or generates small axial force, the electric speed reducer can be supported by a deep groove ball bearing, and the service life requirement of the bearing is met, thereby meeting the torque density lifting requirement of the electric speed reducer.
(2) Compared with the existing bevel gear reducer supported by the conical bearing, the herringbone gear reducer provided by the utility model has the characteristics of large axial overlap ratio, large transmission bearing capacity, high transmission efficiency, good noise performance, high reliability and high torque density.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic structural view of an integrated herringbone gear;
fig. 3 is a schematic structural view of a combined herringbone gear.
The reference numerals in the figures represent:
1. a speed reducer housing; 2. an input shaft drive assembly; 3. an intermediate shaft transmission assembly; 4. an output shaft drive assembly; 5. a gear body; 6. a first gear; 7. a second gear; 8. a connecting bolt; 21. an input shaft; 22. an input shaft bearing; 31. an intermediate shaft; 32. a countershaft transmission gear; 33. a middle shaft bearing; 41. a differential; 42. an output gear, 43, output shaft bearing; 51. a first bevel gear ring; 52. a second bevel gear ring; 61. a third bevel gear ring; 71. a fourth bevel gear ring; 101. a left housing; 102. and a right shell.
The following examples illustrate the utility model in further detail.
Detailed Description
The following specific embodiments of the present utility model are provided, and it should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical scheme of the present utility model fall within the protection scope of the present utility model.
In describing the present utility model in terms of orientations, the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate orientations or positional relationships merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating
Or (b)
Implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Unless otherwise indicated, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
The components of the present utility model are commercially available unless otherwise specified.
Example 1
According to the technical scheme, as shown in fig. 1 to 3, the embodiment provides a herringbone gear electric speed reducer, which comprises a speed reducer shell 1 provided with an inner cavity, wherein the speed reducer shell 1 is formed by butting a left shell 101 and a right shell 102, and an input shaft transmission assembly 2, an intermediate shaft transmission assembly 3 and an output shaft transmission assembly 3 are sequentially arranged in the inner cavity from left to right;
the input shaft drive assembly 2 includes an input shaft 21;
the intermediate shaft transmission assembly 3 comprises an intermediate shaft 31 and an intermediate shaft transmission gear 32 sleeved on the intermediate shaft 31;
the output shaft transmission assembly 4 comprises a differential 41 and an output gear 42 sleeved on the differential 41;
the input shaft 21 is meshed with the intermediate shaft transmission gear 32; the intermediate shaft 31 is meshed with the output gear 42 for transmission; the axis of the input shaft 21, the axis of the intermediate shaft 31 and the axis of the differential 41 are arranged in parallel;
the input shaft 21, intermediate shaft 31, intermediate shaft drive gear 32 and output gear 42 are all herringbone gears.
As a preferable scheme of the embodiment, two ends of the intermediate shaft 31 are also sleeved with intermediate shaft bearings 33; input shaft bearings 22 are sleeved at two ends of the input shaft 21; output shaft bearings 43 are sleeved on two ends of the differential 41.
As a preferable mode of the present embodiment, the herringbone gear adopts an integral structure including the gear body 5 and the first and second bevel gears 51 and 52 provided on the outer circumference of the gear body 5, the first and second bevel gears 51 and 52 are provided with respect to the center plane symmetry of the gear body 5, the helix angles of the first and second bevel gears 51 and 52 are rotated in opposite directions, and the tooth portions of the first and second bevel gears 51 and 52 are provided correspondingly.
As a preferred scheme of the embodiment, the herringbone gear adopts a combined structure, and comprises a first gear 6, a second gear 7 and a connecting bolt 8, wherein a first through hole is formed in the first gear 6, a second through hole is formed in the second gear 7, the first through hole and the second through hole are coaxially arranged, and the first gear 6 and the second gear 7 are connected through the connecting bolt 8 penetrating through the first gear and the second gear;
the outer circumference of the first gear 6 is provided with a third bevel gear 61, the outer circumference of the second gear 7 is provided with a fourth bevel gear 71, the third bevel gear 61 and the fourth bevel gear 71 are symmetrically arranged about the herringbone gear center plane, the helix angles of the third bevel gear 61 and the fourth bevel gear 71 are rotated in opposite directions, and the teeth of the third bevel gear 61 and the fourth bevel gear 71 are correspondingly arranged.
As a preferable aspect of the present embodiment, a machining relief groove 53 is provided on the outer wall of the gear body between the first helical gear ring 51 and the second helical gear ring 52 of the integrated herringbone gear.
As a preferable aspect of the present embodiment, the input shaft bearing 22, the intermediate shaft bearing 33, and the output shaft bearing 43 are all deep groove ball bearings.
According to the use requirement, the input shaft and the intermediate shaft can be integrated, interference and welding modes; the intermediate shaft transmission gear and the output gear can be integrated, in interference fit, welded and in a bolt connection mode.
Example 2
The embodiment provides an electric automobile, which is provided with the herringbone gear electric speed reducer disclosed in embodiment 1.
The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model; various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The herringbone gear electric speed reducer comprises a speed reducer shell (1) provided with an inner cavity, wherein the speed reducer shell (1) is formed by butt joint of a left shell (101) and a right shell (102), and is characterized in that an input shaft transmission assembly (2), an intermediate shaft transmission assembly (3) and an output shaft transmission assembly (4) are sequentially arranged in the inner cavity from left to right;
the input shaft transmission assembly (2) comprises an input shaft (21);
the intermediate shaft transmission assembly (3) comprises an intermediate shaft (31) and an intermediate shaft transmission gear (32) sleeved on the intermediate shaft (31);
the output shaft transmission assembly (4) comprises a differential mechanism (41) and an output gear (42) sleeved on the differential mechanism (41);
the input shaft (21) is in meshed transmission with the intermediate shaft transmission gear (32); the intermediate shaft (31) is meshed with the output gear (42) for transmission; the axis of the input shaft (21), the axis of the intermediate shaft (31) and the axis of the differential (41) are arranged in parallel;
the input shaft (21), the intermediate shaft (31), the intermediate shaft transmission gear (32) and the output gear (42) are all herringbone gears.
2. The herringbone gear electric speed reducer according to claim 1, characterized in that the two ends of the intermediate shaft (31) are also sleeved with intermediate shaft bearings (33); input shaft bearings (22) are sleeved at two ends of the input shaft (21); output shaft bearings (43) are arranged at two ends of the differential mechanism (41).
3. The herringbone gear electric speed reducer according to claim 1, wherein the herringbone gear comprises a gear body (5) and a first oblique gear ring (51) and a second oblique gear ring (52) which are arranged on the outer circumference of the gear body (5), the first oblique gear ring (51) and the second oblique gear ring (52) are symmetrically arranged with respect to the center plane of the gear body (5), the spiral angles of the first oblique gear ring (51) and the second oblique gear ring (52) are opposite in rotation direction, and the teeth of the first oblique gear ring (51) and the second oblique gear ring (52) are correspondingly arranged.
4. The herringbone gear electric speed reducer according to claim 1, wherein the herringbone gear comprises a first gear (6), a second gear (7) and a connecting bolt (8), a first through hole is formed in the first gear (6), a second through hole is formed in the second gear (7), the first through hole and the second through hole are coaxially arranged, and the first gear (6) and the second gear (7) are connected through the connecting bolt (8) penetrating through the first gear and the second gear;
the outer circumference of the first gear (6) is provided with a third oblique gear ring (61), the outer circumference of the second gear (7) is provided with a fourth oblique gear ring (71), the third oblique gear ring (61) and the fourth oblique gear ring (71) are symmetrically arranged about the center plane of the herringbone gear, the spiral angles of the third oblique gear ring (61) and the fourth oblique gear ring (71) are opposite in rotation direction, and the tooth parts of the third oblique gear ring (61) and the fourth oblique gear ring (71) are correspondingly arranged.
5. A herringbone gear electric reducer as claimed in claim 3, characterized in that a machining relief (53) is provided on the outer wall of the gear body between the first (51) and second (52) bevel gear.
6. The herringbone gear motor-reducer according to claim 2, wherein the input shaft bearing (22), the intermediate shaft bearing (33) and the output shaft bearing (43) are deep groove ball bearings.
7. An electric automobile, characterized in that the electric automobile is provided with the herringbone gear electric speed reducer according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336549.9U CN219975250U (en) | 2023-05-29 | 2023-05-29 | Herringbone gear electric speed reducer and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336549.9U CN219975250U (en) | 2023-05-29 | 2023-05-29 | Herringbone gear electric speed reducer and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219975250U true CN219975250U (en) | 2023-11-07 |
Family
ID=88590718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321336549.9U Active CN219975250U (en) | 2023-05-29 | 2023-05-29 | Herringbone gear electric speed reducer and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219975250U (en) |
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2023
- 2023-05-29 CN CN202321336549.9U patent/CN219975250U/en active Active
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