Main reducing gear and vehicle
阅读说明:本技术 主减速器和车辆 (Main reducing gear and vehicle ) 是由 于吉龙 高明臣 李海潮 肖鸿飞 周新华 于 2020-06-09 设计创作,主要内容包括:本发明公开了一种主减速器和车辆,主减速器包括:输入轴、十字轴、行星齿轮、第一输出齿轮、第二输出齿轮、第一输出轴、传动齿轮和第二输出轴,十字轴设置于输入轴上,行星齿轮可转动地设置于十字轴,第一输出齿轮与行星齿轮啮合,第二输出齿轮与行星齿轮啮合且与第一输出齿轮间隔设置,第二输出齿轮还选择性与输入轴传动,第一输出轴选择地与第一输出齿轮传动,第一输出轴在输入轴和第二输出齿轮传动时与第一输出齿轮断开传动,传动齿轮与第二输出齿轮啮合,传动齿轮固定于第二输出轴上。通过第二输出齿轮选择性地与输入轴传动,第一输出轴选择性地与第一输出齿轮传动,使得主减速器可以根据需求在两个驱动路径和一个驱动路径之间进行转换。(The invention discloses a main reducer and a vehicle, wherein the main reducer comprises: the cross shaft is arranged on the input shaft, the planetary gear is rotatably arranged on the cross shaft, the first output gear is meshed with the planetary gear, the second output gear is meshed with the planetary gear and is arranged at intervals with the first output gear, the second output gear is further selectively transmitted with the input shaft, the first output shaft is selectively transmitted with the first output gear, the first output shaft is disconnected from the first output gear during transmission of the input shaft and the second output gear, the transmission gear is meshed with the second output gear, and the transmission gear is fixed on the second output shaft. The first output shaft is selectively in transmission with the first output gear through the second output gear, so that the main speed reducer can be switched between two driving paths and one driving path according to requirements.)
1. A final drive for a vehicle, comprising:
an input shaft;
a spider disposed on the input shaft;
a planetary gear rotatably provided to the spider;
a first output gear meshed with the planetary gear;
a second output gear meshed with the planetary gear and spaced from the first output gear, the second output gear also selectively in transmission with the input shaft;
a first output shaft selectively in drive with the first output gear, the first output shaft being disconnected from drive with the first output gear when the input shaft and the second output gear are in drive;
a transmission gear meshed with the second output gear;
and the transmission gear is fixed on the second output shaft.
2. A final drive for a vehicle according to claim 1, further comprising: a first synchronization device disposed between the first output gear and the first output shaft to selectively engage and disengage the first output gear and the first output shaft.
3. A final drive of a vehicle according to claim 2, characterized in that an end portion of the first output shaft and an end portion of the first output gear are each provided with a spline that engages with the first synchronizing device, the first synchronizing device comprising: the meshing sleeve is matched with the spline of the first output shaft, and the shifting fork selectively shifts the meshing sleeve to be meshed with the spline of the first output gear.
4. A final drive for a vehicle according to claim 3, wherein the first output shaft is collinear with the axis of the input shaft and the end of the first output shaft is sleeved on the end of the input shaft.
5. A final drive for a vehicle according to claim 1, further comprising: a second synchronizer disposed between the input shaft and the second output gear to selectively engage and disengage the input shaft and the second output gear.
6. A final drive for a vehicle according to claim 5, characterized in that the second output gear is provided with splines towards a side of the second synchronizing device, which comprises: the meshing sleeve is matched with the spline of the input shaft, and the shifting fork selectively shifts the meshing sleeve to be meshed with the spline of the second output gear.
7. A final drive for a vehicle according to claim 1, wherein the first output gear and the second output gear are both sleeved on the input shaft with a bushing therebetween.
8. A final drive for a vehicle according to claim 1, characterized in that a thrust needle bearing is provided between the first output gear and the end of the first output shaft, the input shaft has a shoulder provided on one side of the second output gear, and a thrust needle bearing is provided between the shoulder and the second output gear.
9. A final drive for a vehicle according to claim 1, characterised in that the second output shaft is provided with a drive bevel gear, which meshes with a driven bevel gear.
10. A vehicle, characterized by comprising:
a front axle;
a mid-axle located on a rear side of the front axle;
a rear axle located at a rear side of the middle axle;
a final drive for a vehicle according to any of claims 1 to 9, the first output shaft being in drive connection with the rear axle and the second output shaft being in drive connection with the intermediate axle.
Technical Field
The invention relates to the technical field of speed reducers, in particular to a main speed reducer and a vehicle.
Background
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a final drive for a vehicle, in which a first output shaft is selectively driven with a first output gear by a second output gear, so that the final drive can be switched between two drive paths and one drive path as required.
The invention also provides a vehicle.
A final drive for a vehicle according to an embodiment of the first aspect of the invention includes: the cross shaft is arranged on the input shaft, the planetary gear is rotatably arranged on the cross shaft, the first output gear is meshed with the planetary gear, the second output gear is meshed with the planetary gear and is arranged at intervals with the first output gear, the second output gear is further selectively transmitted with the input shaft, the first output shaft is selectively transmitted with the first output gear, the first output shaft is disconnected from transmission with the first output gear when the input shaft and the second output gear are transmitted, the transmission gear is meshed with the second output gear, and the transmission gear is fixed on the second output shaft.
According to the main speed reducer provided by the embodiment of the invention, the second output gear is selectively in transmission with the input shaft, and the first output shaft is selectively in transmission with the first output gear, so that the main speed reducer can be switched between two driving paths and one driving path according to requirements. For example, when the whole vehicle runs in a full load mode, the main speed reducer has two driving paths, and the driving force of the vehicle is strong; when in an idling state, the main speed reducer is provided with a driving path, so that the oil consumption of the vehicle can be reduced.
According to some embodiments of the invention, the final drive further comprises: a first synchronization device disposed between the first output gear and the first output shaft to selectively engage and disengage the first output gear and the first output shaft.
According to some embodiments of the invention, an end of the first output shaft and an end of the first output gear are each provided with a spline that cooperates with the first synchronization device, the first synchronization device comprising: the meshing sleeve is matched with the spline of the first output shaft, and the shifting fork selectively shifts the meshing sleeve to be meshed with the spline of the first output gear.
According to some embodiments of the invention, the first output shaft is collinear with an axis of the input shaft, and an end of the first output shaft is sleeved on an end of the input shaft.
According to some embodiments of the invention, the final drive further comprises: a second synchronizer disposed between the input shaft and the second output gear to selectively engage and disengage the input shaft and the second output gear.
According to some embodiments of the invention, a side of the second output gear facing the second synchronization device is provided with splines, the second synchronization device comprising: the meshing sleeve is matched with the spline of the input shaft, and the shifting fork selectively shifts the meshing sleeve to be meshed with the spline of the second output gear.
According to some embodiments of the invention, the first output gear and the second output gear are both sleeved on the input shaft and provided with a bushing therebetween.
According to some embodiments of the invention, a thrust needle bearing is disposed between the first output gear and the end of the first output shaft, the input shaft has a shoulder disposed to one side of the second output gear, and a thrust needle bearing is disposed between the shoulder and the second output gear.
According to some embodiments of the invention, the second output shaft is provided with a drive bevel gear, which engages with a driven bevel gear.
A vehicle according to an embodiment of a second aspect of the invention includes: the rear axle is positioned at the rear side of the middle axle, the first output shaft is in transmission with the rear axle, and the second output shaft is in transmission with the middle axle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a final drive having two drive paths according to an embodiment of the present invention;
FIG. 2 is a partial schematic view A of FIG. 1;
FIG. 3 is a cross-sectional view of a final drive having one drive path according to an embodiment of the present invention;
fig. 4 is a partial schematic view B of fig. 3.
Reference numerals:
a main reducer S;
an
a
a bushing 41; a thrust needle bearing 42; a
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In the following, a final drive S according to an embodiment of the invention is described with reference to fig. 1-4, and the invention also proposes a vehicle, which may be a vehicle for transportation, having the final drive S described above.
As shown in fig. 1, a final drive S of a vehicle includes: an
On one hand, the
On the other hand, the
Thus, the
As shown in fig. 1, the final drive S further includes: a
Specifically, as shown in fig. 2, an end portion of the
Specifically, the
As shown in fig. 3, the final drive S further includes: a second synchronizing
Specifically, as shown in fig. 4, the
In addition, as shown in fig. 2, the
As shown in fig. 4, a thrust needle bearing 42 is provided between the
As shown in fig. 3, the
A vehicle according to an embodiment of a second aspect of the invention includes: the front axle, the middle axle, the rear axle and the main speed reducer S of the vehicle, wherein the middle axle is positioned at the rear side of the front axle, the rear axle is positioned at the rear side of the middle axle, the
Referring to fig. 1 and 2, a driving mode of the final drive S having two driving paths is described, wherein a power torque output by the engine of the whole vehicle is transmitted to a
Referring to fig. 3 and 4, a driving form of the final drive S having a driving path in which a power torque output from the engine of the vehicle is transmitted to the
Further, two tapered
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
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