CN217784150U - Speed reducer, power assembly and vehicle - Google Patents
Speed reducer, power assembly and vehicle Download PDFInfo
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- CN217784150U CN217784150U CN202221978000.5U CN202221978000U CN217784150U CN 217784150 U CN217784150 U CN 217784150U CN 202221978000 U CN202221978000 U CN 202221978000U CN 217784150 U CN217784150 U CN 217784150U
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- intermediate shaft
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Abstract
The present disclosure relates to a speed reducer, a power assembly and a vehicle, the speed reducer includes: the gearbox comprises a reduction box body, wherein a main shaft, an intermediate shaft and a differential shaft are arranged in the reduction box body, and an intermediate shaft gear and a differential gear are respectively arranged on the intermediate shaft and the differential shaft; the oil shell is arranged in the speed reducer box body, and is provided with a liquid inlet so as to inject oil into the oil shell through the liquid inlet; at least a portion of the differential gear extends into the oil casing to agitate and splash oil within the oil casing as the differential gear rotates. It has solved the current oil stirring inefficiency when lubricating to reduction gear inner structure, and can cause a large amount of fluid losses problem.
Description
Technical Field
The disclosure relates to the technical field of vehicles, in particular to a speed reducer, a power assembly and a vehicle.
Background
At present, in a vehicle speed reducer, a lubricating structure is generally arranged to lubricate a main shaft, an intermediate shaft, a differential gear and the like of the speed reducer so as to avoid the subsequent normal use of the speed reducer from being influenced by the larger abrasion in use.
The existing speed reducer is lubricated generally by the following modes, one mode is that an oil pump and a filtering device are arranged, a lubricating oil circulation pipeline is arranged between the oil pump and the speed reducer and comprises an oil inlet pipe and an oil return pipe, the oil pump takes out lubricating oil in the speed reducer through the oil inlet pipe and sprays the taken-out lubricating oil to a kinematic pair in a shell through the oil return pipe so as to lubricate the speed reducer, but the required oil adding amount of the mode is large, and the waste of the lubricating oil can be caused.
In another mode, an input bearing mounting hole seat is arranged on the speed reducer shell, an input bearing cover is arranged at the position of the input bearing mounting hole on the speed reducer shell, an oil inlet groove along the radial direction is arranged on the upper half part of the input bearing mounting hole seat, an oil collecting area is arranged above an oil inlet of the oil inlet groove on the speed reducer shell, and the oil collecting area is communicated with the inside of the input bearing mounting hole seat through the oil inlet groove. The oil that splashes that the internal gear of reduction gear rotated the stirring hits on the inner wall of reduction gear casing, through arranging the oil collecting area in reduction gear casing oil feed tank periphery, the lubricating oil that gets into the oil collecting area can flow along the oil feed tank, reaches input bearing bottom rolling element, has realized the lubrication and the cooling to the reduction gear bearing. But this kind of reduction gear jackshaft arranges highly, and the required fuel charge is great just can guarantee jackshaft lubrication and splash lubrication such as bearing, stirs oily efficiency and is lower.
Therefore, there is a need for a speed reducer that can sufficiently lubricate the structure inside the speed reducer such as an intermediate shaft, and does not waste a large amount of oil.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reduction gear, power assembly and vehicle, it has solved the current oil stirring inefficiency when lubricating reduction gear inner structure, and can cause a large amount of fluid loss problems.
In order to achieve the above object, a first aspect of the present disclosure provides a speed reducer comprising:
the gearbox comprises a reduction box body, wherein a main shaft, an intermediate shaft and a differential shaft are arranged in the reduction box body, and an intermediate shaft gear and a differential gear are respectively arranged on the intermediate shaft and the differential shaft;
the oil shell is arranged in the speed reducer box body, and is provided with a liquid inlet so as to inject oil into the oil shell through the liquid inlet;
at least a portion of the differential gear extends into the oil casing to agitate and splash oil within the oil casing as the differential gear rotates.
Optionally, a liquid inlet on the oil casing is arranged at the bottom of the oil casing.
Optionally, the countershaft gear comprises a countershaft bull gear disposed on the countershaft;
when the axis position of the main shaft is higher than the axis position of the intermediate shaft, at least part of the large gear of the intermediate shaft is positioned in the oil shell;
wherein the oil casing comprises a first portion and a second portion, at least part of the differential gear being located within the first portion, at least part of the intermediate shaft gearwheel being located within the second portion.
Optionally, the first part is configured as a first oil casing and the second part is configured as a second oil casing, the first oil casing and the second oil casing being fixedly connected to each other.
Optionally, when the axial center position of the main shaft is lower than the axial center position of the intermediate shaft, the oil casing is configured as a third oil casing, and at least a part of the differential gear is located in the third oil casing.
Optionally, there is a gap between both sides of the differential gear in the axial direction and both side walls of the first portion of the oil casing.
Optionally, a gap between a side of the differential gear close to the intermediate shaft gearwheel and a side wall of the first portion close to the intermediate shaft gearwheel is 1-2.5mm;
and the gap between the other side of the differential gear and the other side wall of the first part is 2.5-3.5mm.
Optionally, a gap is formed between two sides of the large gear of the intermediate shaft and two side walls of the second part of the oil casing.
Optionally, the gap between the side of the countershaft gearwheel close to the differential gear and the side wall of the second part close to the differential gear is 2-2.5mm;
and the clearance between the other side of the large gear of the intermediate shaft and the side wall of the other side of the oil casing is 2-3mm.
Optionally, the countershaft gear further comprises a countershaft pinion gear disposed on the countershaft;
a gap is formed between the intermediate shaft pinion and the oil casing along a direction perpendicular to the top of the oil casing.
Optionally, the clearance between the countershaft pinion and the oil casing is 2-4mm.
Optionally, the oil casing is detachably fixed to the bottom of the reduction case.
Optionally, the oil casing is provided with a mounting column, the reduction gearbox body is provided with a mounting hole matched with the mounting column, and the oil casing is fixed to the mounting hole of the reduction gearbox body through the mounting column.
In a second aspect of the present disclosure, there is provided a power assembly including a retarder according to any one of the above embodiments.
In a third aspect of the present disclosure, a vehicle is provided, which includes the power assembly described in the above embodiment.
Through above-mentioned technical scheme, through the oil casing that sets up in the reducing gear box body to make differential gear's at least part stretch into in the oil casing after, through the inlet to the oiling in the oil casing, can soak the lubrication to differential gear, simultaneously when differential gear moves, under differential gear centrifugal force's effect, can stir outside the oil splash oil casing of the interior fluid splash of oil casing, in order to realize the splash lubrication to other structures in the reduction gear. In addition, due to the blocking of the oil shell, the invalid splashing of oil can be avoided to a certain extent, so that the loss of the oil is reduced, the oil adding amount is relatively reduced, and certain oil is saved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic view of the overall structure of a speed reducer provided by an embodiment of the present disclosure.
Fig. 2 is a schematic view of a partial gear shaft arrangement structure when a main shaft of a speed reducer provided by an embodiment of the present disclosure is higher than an intermediate shaft.
Fig. 3 is a schematic view of a partial gear shaft arrangement structure when a main shaft of a speed reducer provided by an embodiment of the disclosure is lower than an intermediate shaft.
Fig. 4 is a schematic structural diagram of an oil casing of a speed reducer provided by an embodiment of the disclosure.
Fig. 5 is a schematic structural diagram in a top view at an oil casing position of a speed reducer provided by an embodiment of the disclosure.
Fig. 6 is a schematic bottom view of an oil casing of a speed reducer according to an embodiment of the present disclosure.
Fig. 7 is a partial structural schematic diagram of a reduction gear box body of a speed reducer provided by an embodiment of the disclosure.
Description of the reference numerals
1. A reduction box body; 2. a main shaft; 3. an intermediate shaft; 31. an intermediate shaft gearwheel; 32. a countershaft pinion; 4. a differential shaft; 41. a differential gear; 5. an oil shell; 51. a first portion; 52. a second portion; 53. a liquid inlet; 6. mounting a column; 7. and (7) installing holes.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
The present disclosure provides a speed reducer, as shown in fig. 1, the speed reducer comprises a speed reducer case 1 and an oil casing 5, wherein a main shaft 2, an intermediate shaft 3 and a differential shaft 4 are respectively arranged in the speed reducer case 1, and an intermediate shaft 3 gear and a differential gear 41 are respectively fixedly arranged on the intermediate shaft 3 and the differential shaft 4. The oil casing 5 is arranged in the speed reducer box body, and a liquid inlet 53 is arranged on the oil casing 5 so as to inject oil into the oil casing 5 through the liquid inlet 53.
At least a portion of the differential gear 41 may extend into the oil casing 5 to agitate oil in the oil casing 5 and splash the oil out of the oil casing 5 when the differential gear 41 rotates.
By means of the arrangement of the oil casing 5, when the gears in the speed reducer run relatively, the differential gear 41 can stir up oil in the oil casing 5 under the action of centrifugal force, so that the oil can splash and lubricate other structures in the speed reducer sufficiently. In addition, because the oil casing 5 blocks, can avoid fluid to be invalid to splash to a certain extent, and annotate the liquid in to the oil casing 5 through inlet 53, only need inject a small amount of fluid into can make differential gear 41 stir the fluid that should pour into the bottom of oil casing 5 into, it stirs oily efficiency higher, and required fuel charge is also lower relatively, can save certain oil mass.
Wherein, the highest position that injects fluid into the oil casing 5 is less than the highest position of oil casing 5, so can avoid causing the loss of fluid, also avoid fluid too much and cause certain resistance to differential gear 41.
In some embodiments, as shown in fig. 4 and 6, the liquid inlet 53 on the oil casing 5 is arranged at the bottom of the oil casing 5.
Through setting up inlet 53 to the bottom of oil casing 5 after for can not directly pour into on the differential gear 41 when oiling at every turn, thereby can not produce direct resistance to differential gear 41, guarantee to make the normal operation of differential gear 41, and also can reduce certain oil stirring loss.
It should be noted that, the size of the liquid inlet 53 is controllable, for example, the size of the liquid inlet 53 at the bottom of the oil casing 5 can be set according to different needs, or a sealing plate matched with the liquid inlet 53 can be arranged at the position of the liquid inlet 53, so that the size of the liquid inlet 53 can be adjusted by adjusting the sealing plate according to needs, and thus, the size of the liquid inlet 53 is controlled according to needs, and loss of oil liquid is avoided.
In some embodiments, as shown in fig. 2, the counter gear 3 includes a counter gear wheel 31 fixedly disposed on the counter shaft 3, and when the axial position of the main shaft 2 in the speed reducer is higher than the axial position of the counter shaft 3, at least a portion of the counter gear wheel 31 is located in the oil casing 5.
Wherein the oil casing 5 comprises a first part 51 and a second part 52, at least part of the differential gear 41 being located in the first part 51 and at least part of the intermediate gear wheel 31 being located in the second part 52.
When the axle center position of the main shaft 2 in the speed reducer is higher than the axle center position of the intermediate shaft 3, namely the position of the main shaft 2 is higher than the position of the intermediate shaft 3, at least part of the differential gear 41 and at least part of the intermediate shaft big gear 31 can be respectively extended into the first part 51 and the second part 52 of the oil shell 5, so that the differential gear 41 and the intermediate shaft big gear 31 are simultaneously in an oil immersion state, and the condition that the lubrication of the intermediate shaft 3 gear is insufficient through splash lubrication is avoided. When the differential gear 41 and the intermediate shaft large gear 31 operate, the oil in the first portion 51 and the second portion 52 can be respectively stirred to achieve the effect of splash lubrication, so that the speed reducer achieves a better lubrication state. In addition, because the gear on the main shaft 2 generates oil churning loss in an oil immersion state, the gear on the main shaft 2 does not need to be immersed into the oil shell 5, and the oil churning loss is avoided.
In the present embodiment, as shown in fig. 4, the first portion 51 is configured as a first oil casing, the second portion 52 is configured as a second oil casing, and the first oil casing and the second oil casing are fixedly connected with each other, for example, by bolts or other connectors. Correspondingly, the bottoms of the first oil shell and the second oil shell are respectively provided with a liquid inlet 53, so that liquid is respectively injected into the first oil shell and the second oil shell through the liquid inlets 53.
Through the arrangement of the first oil casing and the second oil casing, the differential gear 41 and the intermediate shaft large gear 31 can be respectively and independently stirred to splash oil, and excessive interference between the differential gear and the intermediate shaft large gear is avoided.
It should be noted that, the first oil casing and the second oil casing may also be directly formed integrally, or may be connected by welding in the following step.
In other embodiments, as shown in fig. 3, when the axial position of the main shaft 2 in the reduction gear is lower than the axial position of the intermediate shaft, that is, the main shaft 2 is disposed at a position lower than the position of the intermediate shaft 3, at this time, the oil casing 5 is configured as a third oil casing 5, and at least a part of the differential gear 41 is located in the third oil casing 5.
Thus, since the intermediate shaft 3 is arranged at a higher position and the intermediate shaft gearwheel 31 is arranged at a higher position, at the moment, only the differential gear 41 needs to be at least partially extended into the third oil casing 5, so that the oil in the third oil casing 5 is stirred only by the differential gear 41 to realize splash lubrication.
In some embodiments, as shown in fig. 5, there is a gap between both sides of the differential gear 41 in the axial direction and both side walls of the first portion 51 of the oil casing 5.
Wherein, the clearance between one side of the differential gear 41 close to the intermediate shaft gearwheel 31 and the side wall of the first part 51 close to the intermediate shaft gearwheel 31 is 1-2.5mm, and the clearance between the other side of the differential gear 41 and the other side wall of the first part 51 is 2.5-3.5mm.
Through the gaps arranged between the two sides of the differential gear 41 and the side walls of the two sides of the first part 51, the differential gear 41 can be prevented from interfering with the first part 51 of the oil casing 5 during operation to influence the operation of the differential gear 41, and the differential gear 41 and the first part 51 of the oil casing 5 can be prevented from colliding and wearing. Simultaneously with differential gear 41 both sides and the clearance setting of first part 51 behind this scope, effectively avoid colliding with between differential gear 41 and the first part 51 outer wall, also avoid making the clearance setting too big, and cause certain space restriction.
In some embodiments, as shown in fig. 5, there is a gap between both sides of the countershaft large gear and both sides of the second portion 52 of the oil casing 5.
Wherein, the clearance between one side of the intermediate shaft gearwheel 31 close to the differential gear 41 and one side wall of the second part 52 close to the differential gear 41 is 2-2.5mm, and the clearance between the other side of the intermediate shaft gearwheel 31 and the other side wall of the oil casing 5 is 2-3mm.
Through the clearance that sets up between the lateral wall of counter shaft gear wheel 31 both sides and second part 52 both sides, avoid taking place to interfere with second part 52 of oil casing 5 when counter shaft gear wheel 31 moves, also avoid making counter shaft gear wheel 31 and second part 52 of oil casing 5 take place to collide with the wearing and tearing. Simultaneously with the clearance setting of jackshaft gear wheel 31 both sides and second part 52 behind this scope, can effectively avoid colliding with between jackshaft gear wheel 31 and the 52 outer walls of second part, also avoid making the too big of this clearance setting, and cause certain space restriction, and cause the problem of follow-up installation.
In some embodiments, as shown in fig. 2, the above-mentioned counter shaft 3 gear further comprises a counter shaft pinion 32 disposed on the counter shaft 3, and in the case where the position of the main shaft 2 in the reduction gearbox is higher than the position of the counter shaft 3, in the direction perpendicular to the top of the oil casing 5, there is a gap between the counter shaft pinion 32 and the oil casing 5, that is, there is a gap between the counter shaft pinion 32 and the second portion 52 of the oil casing 5, and the gap between the counter shaft pinion 32 and the oil casing 5 is 2-4mm.
Through the clearance that sets up between jackshaft pinion 32 and oil casing 5, can avoid jackshaft pinion 32 to collide with oil casing 5 when the operation takes place. In addition, after the clearance is set to the range, the delivery can be effectively prevented from colliding, and the problems that the oil filling amount is reduced and the lubrication is poor due to the fact that the clearance is too large are avoided.
In some embodiments, as shown in fig. 1 and 7, the oil casing 5 is detachably fixed to the bottom of the reduction case 1.
Through can dismantle the installation to reduction case 1 bottom with oil casing 5, can be convenient for follow-up when overhauing dismantle the processing such as to it. In addition, the oil casing 5 is installed at a position relatively avoiding the position of the complex structure at the bottom of the reduction case body 1, so that the oil casing 5 is convenient to install.
In the present embodiment, as shown in fig. 6 and 7, a plurality of mounting posts 6 are fixedly provided on the oil casing 5, mounting holes 7 matching with the mounting posts 6 are correspondingly provided at mounting positions on the reduction gear case 1, and the oil casing 5 is fixed to the mounting holes 7 of the reduction gear case 1 through the mounting posts 6.
By means of the installation columns 6 and the installation holes 7, the oil casing 5 can be conveniently fixed on the reduction box body 1, and the installation mode is convenient.
In addition, the oil casing 5 may also be fixed to the reduction gear box 1 by bolts or other connectors, which is not limited by the present disclosure.
Based on the same technical concept, the embodiment of the present disclosure further provides a power assembly, which includes the speed reducer involved in the above embodiments.
After the speed reducer is arranged in the power assembly, when the speed reducer operates, the structure in the speed reducer can be fully lubricated due to the arrangement of the oil shell 5 and other structures, and meanwhile, due to the blocking of the oil shell 5, in the process of splashing lubrication, invalid splashing of oil can be avoided, so that certain oil quantity is saved. In addition, because the oil enters the oil casing 5 through the liquid inlet 53 at the bottom of the oil casing 5, the differential gear 41 always stirs the oil at the bottom of the oil casing 5, so that the direct resistance of the oil to the gear can be reduced, and certain oil stirring loss is reduced, and the loss of the lubricating oil can be relatively reduced when the power assembly runs.
Based on the same technical concept, the embodiment of the present disclosure also provides a vehicle, which includes the powertrain referred to in the above embodiments.
After the power assembly is arranged in the vehicle, the vehicle is opened to enable the power assembly to work, when the speed reducer in the power assembly operates, due to the arrangement of structures such as an oil shell in the speed reducer, the structure in the speed reducer can be fully lubricated, invalid splashing of oil can be effectively avoided, and the oil quantity is saved. In addition, because the oil liquid of the speed reducer enters the oil shell 5 through the liquid inlet 53 at the bottom of the oil shell 5, the oil liquid at the bottom of the oil shell 5 is always stirred by the differential gear 41, the resistance of the oil liquid to the gear directly can be reduced, and certain oil stirring loss is reduced, so that the loss of lubricating oil can be reduced when a vehicle provided with the power assembly is started, and certain oil liquid is saved.
The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (15)
1. A speed reducer, comprising:
the reduction box body is internally provided with a main shaft, an intermediate shaft and a differential shaft, and the intermediate shaft and the differential shaft are respectively provided with an intermediate shaft gear and a differential gear;
the oil shell is arranged in the speed reducer box body, and is provided with a liquid inlet so as to inject oil into the oil shell through the liquid inlet;
at least a portion of the differential gear extends into the oil casing to agitate and splash oil within the oil casing as the differential gear rotates.
2. The speed reducer of claim 1, wherein the fluid inlet in the oil housing is disposed at a bottom of the oil housing.
3. The reducer according to claim 1, wherein the countershaft gear includes a countershaft bull gear disposed on the countershaft;
when the axis position of the main shaft is higher than the axis position of the intermediate shaft, at least part of the large gear of the intermediate shaft is positioned in the oil shell;
wherein the oil casing comprises a first portion and a second portion, at least part of the differential gear being located within the first portion, at least part of the intermediate shaft gearwheel being located within the second portion.
4. A retarder according to claim 3, wherein the first part is configured as a first oil casing and the second part is configured as a second oil casing, the first and second oil casings being fixedly connected to each other.
5. The speed reducer of claim 1, wherein when the axial center position of the main shaft is lower than the axial center position of the intermediate shaft, the oil casing is configured as a third oil casing, and at least a portion of the differential gear is located inside the third oil casing.
6. A speed reducer according to claim 3, wherein there is a gap between both sides of the differential gear in the axial direction and both side walls of the first portion of the oil casing.
7. A reducer according to claim 6, in which the clearance between the side of the differential gear wheel adjacent the intermediate shaft gearwheel and the side wall of the first portion adjacent the intermediate shaft gearwheel is 1-2.5mm;
and the gap between the other side of the differential gear and the other side wall of the first part is 2.5-3.5mm.
8. A reducer according to claim 3, in which there is clearance between both sides of the large gearwheel on the intermediate shaft and both sides of the second part of the oil casing.
9. A reducer according to claim 8, in which the gap between the side of the countershaft gearwheel close to the differential gear and the side wall of the second portion close to the differential gear is 2-2.5mm;
and the gap between the other side of the large gear of the intermediate shaft and the side wall of the other side of the oil shell is 2-3mm.
10. The reducer of claim 3, wherein the countershaft gear further comprises a countershaft pinion disposed on the countershaft;
a gap is formed between the intermediate shaft pinion and the oil casing along a direction perpendicular to the top of the oil casing.
11. A decelerator according to claim 10, wherein the clearance between the intermediate shaft pinion and the oil casing is 2-4mm.
12. The speed reducer of claim 1, wherein the oil casing is removably secured to the bottom of the speed reducer case.
13. The speed reducer according to claim 12, wherein the oil casing is provided with a mounting post, the reduction case body is provided with a mounting hole matching the mounting post, and the oil casing is fixed to the mounting hole of the reduction case body by the mounting post.
14. A power pack comprising a retarder according to any of claims 1 to 13.
15. A vehicle comprising the powertrain of claim 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221978000.5U CN217784150U (en) | 2022-07-27 | 2022-07-27 | Speed reducer, power assembly and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221978000.5U CN217784150U (en) | 2022-07-27 | 2022-07-27 | Speed reducer, power assembly and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217784150U true CN217784150U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221978000.5U Active CN217784150U (en) | 2022-07-27 | 2022-07-27 | Speed reducer, power assembly and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217784150U (en) |
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2022
- 2022-07-27 CN CN202221978000.5U patent/CN217784150U/en active Active
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