CN109356997B - Novel pure electric reduction gearbox - Google Patents
Novel pure electric reduction gearbox Download PDFInfo
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- CN109356997B CN109356997B CN201811324780.XA CN201811324780A CN109356997B CN 109356997 B CN109356997 B CN 109356997B CN 201811324780 A CN201811324780 A CN 201811324780A CN 109356997 B CN109356997 B CN 109356997B
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- reduction gearbox
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- 230000009467 reduction Effects 0.000 title claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 64
- 238000005461 lubrication Methods 0.000 claims description 58
- 230000001050 lubricating effect Effects 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 12
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000007667 floating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02008—Gearboxes; Mounting gearing therein characterised by specific dividing lines or planes of the gear case
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to a novel pure electric reduction gearbox, which comprises a reduction gearbox shell, wherein the reduction gearbox shell comprises a reduction gearbox front shell and a reduction gearbox end cover which are matched with each other, and a cavity for installing and working a transmission part is formed after the reduction gearbox front shell and the reduction gearbox end cover are combined together; the transmission part comprises an output shaft, an input shaft and a planetary mechanism, wherein the planetary mechanism comprises a sun gear with an external tooth structure and a gear ring with an internal tooth structure, which are coaxially arranged, a plurality of planetary gears meshed with the gear ring and the internal and external tooth structures of the sun gear are arranged between the sun gear and the gear ring, the end parts of the planetary gears are connected through a planetary carrier to realize linkage, the planetary carrier is integrally formed with the output shaft, and the sun gear is connected with the input shaft. The invention has the advantages that: through adopting integrated into one piece's mode with planet carrier and output shaft, can effectually guarantee the coaxial precision of both, avoid coaxial deviation, also reduced machining precision and assembly precision moreover.
Description
Technical Field
The invention belongs to the field of automobile part machining, and particularly relates to a novel pure electric reduction gearbox.
Background
The planetary gear reducer is also called a planetary reducer, and the servo reducer. In the family of speed reducers, the planetary speed reducer has the advantages of small volume, high transmission efficiency, wide speed reduction range, high precision and the like, and is widely applied to transmission systems of servo motors, stepping motors, direct current motors and the like. The device has the function of mainly reducing the rotating speed, increasing the torque and reducing the rotation inertia ratio of the load/motor on the premise of ensuring precise transmission.
For example, patent CN108019472a discloses a planetary reducer, wherein an end cover is fixed at the right end of the box body, and a fixed gear is fixedly installed at the center of the inner end surface of the end cover; the middle part of the inner cavity of the box body is provided with a planet carrier through a third bearing and a fourth bearing, and the left end of the inner cavity of the box body is provided with an output shaft gear through a fifth bearing; the input gear shaft is concentrically inserted into the central cavities of the end cover fixed gear and the output shaft gear through the first bearing and the second bearing; the planetary carrier is symmetrically provided with a first planetary gear, a second planetary gear and a third planetary gear, the first planetary gear is meshed with the fixed gear, the second planetary gear is meshed with the input gear shaft, and the third planetary gear is meshed with the output gear; the power is input from the input gear shaft and output from the output shaft gear. The invention has compact structure, large speed ratio, concentric transmission of input and output, higher transmission precision and higher mechanical efficiency.
The planetary reducer in the structure has certain defects: the planet carrier and the output shaft adopt a split structure, and are both arranged on the inner wall of the box body through bearings, the coaxiality of the planet carrier and the output shaft is required to be ensured to be consistent in the working process, and the structure is adopted, when the planetary gear is assembled, the planet carrier, the output shaft and the bearing can have high coaxiality, the assembling precision requirement is high, in addition, the machining precision of the planet carrier, the output shaft and the bearing is also high, and the machining difficulty is high correspondingly; in addition, due to the structural specificity, namely the number of gears meshed with each other, lubrication is often required to ensure smooth operation of the gear set during use. The traditional mode is that a plurality of lubricating oil holes are needed to lubricate gear sets at different positions, the distribution positions of the oil holes are more, an oil way is complex, and lubrication is inconvenient.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel pure electric reduction gearbox which can reduce the requirements on assembly precision and processing difficulty and is convenient to lubricate.
In order to solve the technical problems, the technical scheme of the invention is as follows: the novel pure electric reduction gearbox has the innovation points that: comprising
The gearbox comprises a gearbox shell, a transmission component and a transmission component, wherein the gearbox shell comprises a gearbox front shell and a gearbox end cover which are matched with each other, a T-shaped inner cavity is formed in the gearbox front shell, the gearbox front shell is connected with the gearbox end cover through bolts, and a cavity for installing and working the transmission component is formed after the gearbox front shell and the gearbox end cover are combined;
The transmission part comprises an output shaft, an input shaft and a planetary mechanism, wherein through holes for accommodating the input shaft and extending out of the output shaft are respectively formed in an end cover of the reduction box and a front shell of the reduction box, a pair of tapered bearings for being attached to an inner cavity of the front shell of the reduction box are sleeved on the outer wall of the output shaft, the planetary mechanism comprises a sun gear with an external tooth structure and a gear ring with an internal tooth structure, which are coaxially arranged, the gear ring is pressed on the inner wall of the front shell of the reduction box, a plurality of planet gears meshed with the gear ring and the internal tooth structure of the sun gear are arranged between the sun gear and the gear ring, the end parts of the planet gears are connected through a planet carrier to realize linkage, the planet carrier is integrally formed with the output shaft, the sun gear is connected with the input shaft, a pair of roller bearings attached to the inner wall of the planet carrier and the inner wall of the end cover are sleeved on the outer wall of the input shaft, a lubricating cavity A and a lubricating cavity B are respectively formed on one side of the output shaft, the caliber of the lubricating cavity A is larger than the inner ring of the roller bearing, a plurality of planet gears meshed with the internal tooth structure of the gear bearing are arranged on the outer side of the sun gear and the inner side of the bearing, the planet carrier is also connected with the lubricating cavity A, the planet carrier is provided with a strong lubrication hole C is formed on the side of the central shaft, which is in a side of the lubricating cavity C, which is in close to the lubricating cavity C, and is formed on the side of the central shaft C, which is in close to the lubricating cavity C, and the side of the central shaft is in communication with the lubricating cavity C;
The lubrication system comprises a lubrication oil duct, an oil inlet of the lubrication oil duct is communicated with an oil inlet nozzle, an oil outlet of the lubrication oil duct extends between two conical bearings, a part of lubricating oil flows into a lubrication cavity A in an output shaft from a gap of one conical bearing, flows into a lubrication cavity B respectively and enters a space between a sun wheel and an input shaft through a roller bearing to form a lubrication branch oil duct, another part of lubricating oil flows into a planet carrier from a gap of the other conical bearing, enters a central shaft of a planet wheel from a lubrication hole E on the planet carrier, forms a lubrication main oil duct from the central shaft, and an oil blocking mechanism is further arranged at the side end of the planet carrier.
Further, the connection between the front shell of the reduction gearbox and the end cover of the reduction gearbox is as follows: one end of the end cover of the reduction gearbox, which is close to the front shell of the reduction gearbox, is provided with an annular installation bulge embedded into the inner cavity of the front shell of the reduction gearbox, and the inner wall of the front shell of the reduction gearbox is provided with an annular positioning groove corresponding to the installation bulge.
Further, the sun gear is connected with the input shaft through a spline.
Further, the oil blocking mechanism is as follows: an annular oil retainer extending towards the direction of the output shaft is arranged at one end of the planet carrier close to the output shaft, and the oil retainer is positioned at the outer side of the central shaft of each planet wheel, so that the end face of the planet carrier forms a conical surface structure.
The invention has the advantages that: according to the invention, the planet carrier and the output shaft are integrally formed, so that the coaxial precision of the planet carrier and the output shaft can be effectively ensured, the coaxial deviation is avoided, and the machining precision and the assembly precision are reduced.
To the connection between gearbox front shroud and the gearbox end cover, adopt the cooperation between installation arch and the constant head tank to realized the quick location installation between gearbox front shroud and the gearbox end cover, moreover, this kind of assembly method makes when installing other parts, like the cooperation point that all can install arch and constant head tank such as output shaft, input shaft etc. is the datum point installation, makes things convenient for the assembly of whole part.
Through with the ring gear pressure equipment on the inner wall of gearbox front housing, improved the axiality of planet carrier and ring gear, effectual assurance coaxial precision between them avoids coaxial deviation, has also reduced the processing degree of difficulty and assembly degree of difficulty moreover.
The sun gear is centered in a spline connection mode with the input shaft, so that the sun gear can have a larger floating space, and uniform loading of the planetary gear train is ensured.
The reduction gearbox mechanism is integrally transformed into an oil duct, the traditional lubrication mode is improved, the main oil duct and the branch oil duct are designed to be lubricated bidirectionally, and the lubrication efficiency is improved through the two-way lubrication of the main oil duct and the branch oil duct.
To the setting of keeping off oily mechanism, then avoid lubricating oil to directly flow out in the clearance between planet carrier and the front shell inner wall of speed reducer, cooperation lubrication cavity C, lubrication hole E simultaneously, under high-speed operation, oil forced entering planet wheel pinhole along the conical surface because of the effect of centrifugal force flows, and then needle bearing and antifriction pad's lubrication effect is better.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic diagram of the novel electric-only reduction gearbox of the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a B-B cross-sectional view of fig. 2.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present invention and are not intended to limit the invention to the embodiments described.
1-3, A novel pure electric reduction gearbox lubrication system, wherein the reduction gearbox comprises
The gearbox shell comprises a gearbox front shell 1 and a gearbox end cover 2 which are matched with each other, a T-shaped inner cavity is formed in the gearbox front shell 1, the gearbox front shell 1 and the gearbox end cover 2 are connected through bolts 3, and a cavity for installing and working a transmission part is formed after the gearbox front shell 1 and the gearbox end cover 2 are combined together.
The connection between the front shell 1 of the reduction gearbox and the end cover 2 of the reduction gearbox is as follows: the end of the end cover 2 of the reduction gearbox, which is close to the front shell 1 of the reduction gearbox, is provided with an annular mounting bulge 4 embedded into the inner cavity of the front shell 1 of the reduction gearbox, and meanwhile, the inner wall of the front shell 1 of the reduction gearbox is provided with an annular positioning groove 5 corresponding to the mounting bulge 4, and a sealing ring is further arranged between the mounting bulge 4 and the inner wall of the front shell 1 of the reduction gearbox so as to ensure the sealing effect between the front shell 1 of the reduction gearbox and the end cover 2 of the reduction gearbox. For the connection between the gearbox front casing 1 and the gearbox end cover 2, the cooperation between the installation bulge 4 and the positioning groove 5 is adopted, so that the rapid positioning installation between the gearbox front casing 1 and the gearbox end cover 2 is realized, and in addition, the assembly mode enables the installation of other parts, such as an output shaft, an input shaft and the like, to be convenient for the installation of the whole parts by taking the cooperation point of the installation bulge and the positioning groove as a datum point.
The transmission part comprises an output shaft 7a, an input shaft 6 and a planetary mechanism, through holes for accommodating the input shaft 6 and extending out of the output shaft 7a are respectively formed in a gearbox end cover 2 and a gearbox front shell 1, a pair of conical bearings 8 for fitting the inner cavity of the gearbox front shell 1 are sleeved on the outer wall of the output shaft 6, the planetary mechanism comprises a sun gear 9 with an external tooth structure and a gear ring 10 with an internal tooth structure, which are coaxially arranged, the planetary mechanism is arranged on the inner wall of the gearbox front shell 1 in a pressed mode, through the pressing of the gear ring 10 on the inner wall of the gearbox front shell, coaxiality of a planet carrier and the gear ring is improved, coaxial precision of the planet carrier and the gear ring is effectively guaranteed, coaxial deviation is avoided, machining difficulty and assembly difficulty are also reduced, a plurality of planet gears 11 meshed with the internal tooth structure and the external tooth structure of the gear ring 10 and the sun gear 9 are arranged between the sun gear 9 and the gear ring 10, the end portions of the planet gears 11 are connected through a planet carrier 7b, the planet carrier 7b is integrally formed with the output shaft 7a, the sun gear 9 is connected with the input shaft 6, and a pair of bearings 13 for fitting the inner wall 7b of the gearbox end cover 2 are sleeved on the outer wall of the input shaft 6. Through adopting integrated into one piece's mode with planet carrier 7b and output shaft 7a, can effectually guarantee the coaxial precision of both, avoid coaxial deviation, also reduced machining precision and assembly precision.
The sun gear 9 is connected with the input shaft 6 through a spline. The sun gear 9 is centered in a spline connection manner with the input shaft 6, so that the sun gear 9 can have a larger floating space, and uniform loading of the planetary gear train is ensured.
The planetary gear 11 comprises a central shaft 28 and a rotary gear 29 sleeved outside the central shaft 28, a lubrication cavity C24 is arranged on one side of the central shaft 28 close to the planet carrier 7B, a lubrication hole D30 communicated with the lubrication cavity C24 is arranged on the side wall of the central shaft 28, and a lubrication hole E31 communicated with the lubrication cavity C24 on the central shaft 28 of each planetary gear 11 in a one-to-one correspondence manner is arranged on the planet carrier 7B.
The lubrication system comprises a lubrication oil pan 25, an oil inlet of the lubrication oil pan 25 is communicated with the oil inlet nozzle 25, an oil outlet 32 of the lubrication oil pan 25 extends between two cone bearings 8, a part of lubrication oil flows into a lubrication cavity A21 in the output shaft 7a from a gap of one cone bearing 8 and flows into a lubrication cavity B22 respectively through a roller bearing 13 to enter between the sun gear 9 and the input shaft 6 to form a lubrication branch oil passage, the lubrication oil in the lubrication cavity B22 flows out from an oil outlet 27, the other part of lubrication oil flows into a planet carrier 7B from a gap of the other cone bearing 8 and flows into a lubrication cavity C24 of a central shaft 28 of the planet wheel 11 from a lubrication hole E31 on the planet carrier 7B, lubricates the central shaft 28 and a rotary gear 29 from a lubrication hole D30 of the central shaft 28, forms a lubrication main oil passage, meanwhile, the part of lubrication oil flows into the lubrication oil pan 25 along with the rotation of the planetary mechanism from a gap between the planet carrier 7B and an inner cavity of a front shell 1 of a reduction gearbox, and an oil retaining mechanism is arranged at the side end of the planet carrier 7B. Through improving traditional lubrication mode, through the cooperation of a lubricating oil tray and two oil ducts of lubricated oil branch way, lubricated main oil duct to utilize the effect of centrifugal force that produces when planetary mechanism rotates, only need a lubricating nipple can lubricate all gear train in the reducing gear box, reduce lubricating nipple and lubricated oil circuit, convenient lubrication. The reduction gearbox mechanism is integrally transformed into an oil duct, the traditional lubrication mode is improved, the main oil duct and the branch oil duct are designed to be lubricated bidirectionally, and the lubrication efficiency is improved through the two-way lubrication of the main oil duct and the branch oil duct.
The oil blocking mechanism is as follows: an annular oil deflector 23 extending in the direction of the output shaft 7a is provided at one end of the carrier 7b near the output shaft 7a, and the oil deflector 23 is located outside the central axis of each planet wheel 11. To the setting of keeping off oily mechanism, then avoid lubricating oil to directly flow out in the clearance between planet carrier 7b and the inner wall of shell 1 before the speed reducer, cooperation lubrication cavity C, lubrication hole E simultaneously, under high-speed operation, oil forced entering planet wheel pinhole along the conical surface because of centrifugal force effect flows, and then needle bearing and antifriction pad's lubrication effect is better.
Because of the pumping effect of the tapered bearing, pressure can be formed in a cavity between the oil seal and the tapered roller bearing, and a special oil way can be added on the shell to guide lubricating oil back into the shell according to the traditional design. According to the structure, the oil passing hole is formed in the radial direction of the planet frame shaft, so that the problem that the cone bearing guides oil into the planet frame shaft and simultaneously plays a part of lubricating function on the inner ball bearing is solved.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. Novel pure electric reduction gearbox, its characterized in that: the speed reduction box comprises a speed reduction box shell, wherein the speed reduction box shell comprises a speed reduction box front shell and a speed reduction box end cover which are matched with each other, a T-shaped inner cavity is formed in the speed reduction box front shell, the speed reduction box front shell is connected with the speed reduction box end cover through bolts, and a cavity for installing and working a transmission part is formed after the speed reduction box front shell and the speed reduction box end cover are combined together;
The transmission part comprises an output shaft, an input shaft and a planetary mechanism, wherein through holes for accommodating the input shaft and extending out of the output shaft are respectively formed in an end cover of the reduction box and a front shell of the reduction box, a pair of tapered bearings for being attached to an inner cavity of the front shell of the reduction box are sleeved on the outer wall of the output shaft, the planetary mechanism comprises a sun gear with an external tooth structure and a gear ring with an internal tooth structure, which are coaxially arranged, the gear ring is press-mounted on the inner wall of the front shell of the reduction box, a plurality of planet gears meshed with the gear ring and the internal tooth structure of the sun gear are arranged between the sun gear and the gear ring, the end parts of the planet gears are connected through a planet carrier to realize linkage, the planet carrier is integrally formed with the output shaft, the sun gear is connected with the input shaft, a pair of roller bearings attached to the inner wall of the planet carrier and the inner wall of the end cover are sleeved on the outer wall of the input shaft, a lubricating cavity A and a lubricating cavity B are respectively formed on one side of the output shaft, the caliber of the lubricating cavity A is larger than the inner ring of the roller bearing, a plurality of planet gears communicated with the lubricating cavity A are also formed on the outer side of the tapered bearings, a plurality of planet gears communicated with the lubricating cavity A are formed on the side of the planet carrier, which is communicated with the lubricating cavity C is formed on the side of the central shaft C, which is communicated with the central shaft C, and the central shaft C communicated with the lubricating cavity C is formed on the side of the lubricating cavity C;
The lubrication system comprises a lubrication oil duct, an oil inlet of the lubrication oil duct is communicated with an oil inlet nozzle, an oil outlet of the lubrication oil duct extends between two conical bearings, a part of lubricating oil flows into a lubrication cavity A in an output shaft from a gap of one conical bearing and flows into a lubrication cavity B respectively and enters a space between a sun wheel and an input shaft through a roller bearing to form a lubrication branch oil duct, another part of lubricating oil flows into a planet carrier from a gap of the other conical bearing and enters a central shaft of a planet wheel from a lubrication hole E on the planet carrier and forms a lubrication main oil duct from a central shaft, and an oil blocking mechanism is further arranged at the side end of the planet carrier.
2. The novel electric-only reduction gearbox according to claim 1, wherein: the connection between the front shell of the reduction gearbox and the end cover of the reduction gearbox is as follows: one end of the end cover of the reduction gearbox, which is close to the front shell of the reduction gearbox, is provided with an annular installation bulge embedded into the inner cavity of the front shell of the reduction gearbox, and the inner wall of the front shell of the reduction gearbox is provided with an annular positioning groove corresponding to the installation bulge.
3. The novel electric-only reduction gearbox according to claim 1, wherein: the sun gear is connected with the input shaft through a spline.
4. The novel electric-only reduction gearbox according to claim 1, wherein: the oil blocking mechanism comprises: an annular oil retainer extending towards the direction of the output shaft is arranged at one end of the planet carrier close to the output shaft, and the oil retainer is positioned at the outer side of the central shaft of each planet wheel, so that the end face of the planet carrier forms a conical surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324780.XA CN109356997B (en) | 2018-11-08 | 2018-11-08 | Novel pure electric reduction gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324780.XA CN109356997B (en) | 2018-11-08 | 2018-11-08 | Novel pure electric reduction gearbox |
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| Publication Number | Publication Date |
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| CN109356997A CN109356997A (en) | 2019-02-19 |
| CN109356997B true CN109356997B (en) | 2024-09-06 |
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| CN201811324780.XA Active CN109356997B (en) | 2018-11-08 | 2018-11-08 | Novel pure electric reduction gearbox |
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| CN (1) | CN109356997B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112728050B (en) * | 2019-10-28 | 2025-07-01 | 常州易控汽车电子股份有限公司 | A coaxial planetary gear reducer with shell cooling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201509123U (en) * | 2009-08-31 | 2010-06-16 | 比亚迪股份有限公司 | A hub motor system and its lubrication system |
| CN206439354U (en) * | 2016-12-27 | 2017-08-25 | 綦江齿轮传动有限公司 | Hub reduction planetary mechanism speed changer for pure electric system |
| CN209818691U (en) * | 2018-11-08 | 2019-12-20 | 江苏汤臣汽车零部件有限公司 | Novel pure electric reduction gearbox |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3468709B2 (en) * | 1999-02-01 | 2003-11-17 | ダイハツ工業株式会社 | Lubrication structure of planetary gear |
| CN205479154U (en) * | 2016-03-01 | 2016-08-17 | 彭世昌 | Planet gear of electricelectric motor car |
| CN206439344U (en) * | 2016-12-20 | 2017-08-25 | 中国第一汽车股份有限公司 | Odd-side planetary gear train assembly after a kind of heavy multi-speed transmission |
-
2018
- 2018-11-08 CN CN201811324780.XA patent/CN109356997B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201509123U (en) * | 2009-08-31 | 2010-06-16 | 比亚迪股份有限公司 | A hub motor system and its lubrication system |
| CN206439354U (en) * | 2016-12-27 | 2017-08-25 | 綦江齿轮传动有限公司 | Hub reduction planetary mechanism speed changer for pure electric system |
| CN209818691U (en) * | 2018-11-08 | 2019-12-20 | 江苏汤臣汽车零部件有限公司 | Novel pure electric reduction gearbox |
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| CN109356997A (en) | 2019-02-19 |
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