CN216279262U - Planet gear shaft of differential mechanism - Google Patents
Planet gear shaft of differential mechanism Download PDFInfo
- Publication number
- CN216279262U CN216279262U CN202120475006.XU CN202120475006U CN216279262U CN 216279262 U CN216279262 U CN 216279262U CN 202120475006 U CN202120475006 U CN 202120475006U CN 216279262 U CN216279262 U CN 216279262U
- Authority
- CN
- China
- Prior art keywords
- gear shaft
- shaft body
- planet
- lubricating oil
- planet gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 15
- 238000003801 milling Methods 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 abstract description 25
- 239000003921 oil Substances 0.000 abstract description 24
- 238000005461 lubrication Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Abstract
The utility model aims to provide a planet gear shaft of a differential mechanism, which can enable the lubrication between the planet gear shaft and a planet gear to be more sufficient. The planetary gear shaft comprises a gear shaft body with a cylindrical structure, and is characterized in that oil passing channels communicated with the end face of the gear shaft body and the central position of the gear shaft body are arranged at the end parts of the two ends of the gear shaft body. The end parts of the two ends of the planet gear shaft of the differential mechanism respectively penetrate through the shaft holes of the corresponding planet gears to be fixedly connected with the shell, and lubricating oil in the differential mechanism shell can enter the oil passing channel to lubricate the planet gear shaft and the planet gears in the working process; meanwhile, lubricating oil can penetrate through the oil passage and enter a cavity formed between the planetary gear and the differential shell to take away heat and abrasive dust generated in the friction process, so that cleaner lubricating oil can enter the lubricating oil again to form virtuous circle, and the purposes of meeting the lubricating requirement and reducing faults are achieved.
Description
Technical Field
The utility model belongs to the technical field of electric automobile transmission system application, and particularly relates to a planetary gear shaft of a differential mechanism.
Background
The new energy automobile has been developed greatly as an important development strategy of the country under the support of the policies of the country and governments at all levels. The electric vehicle has rapid power response and high motor rotating speed, and the rotating parts rub against each other to generate a large amount of heat and abrasive dust under the condition of high torque and high rotating speed transmitted by the differential mechanism. As the torque and the rotating speed of the new energy automobile are continuously improved, the problem that a planet gear shaft inside a differential mechanism of the differential mechanism is burnt and even broken is more and more.
In order to cool and lubricate and prevent the shaft teeth from burning in time, the friction part of the differential mechanism needs to have good lubrication environment so as to achieve the purposes of reducing friction, reducing abrasion and realizing lubrication and cooling, so the design of the lubrication structure is particularly critical. The friction between the mating parts of the planetary gear shafts and the planetary gears is severe and requires more perfect lubrication.
Disclosure of Invention
The utility model aims to provide a planet gear shaft of a differential mechanism, which can enable the lubrication between the planet gear shaft and a planet gear to be more sufficient.
The planetary gear shaft comprises a gear shaft body with a cylindrical structure, and is characterized in that oil passing channels communicated with the end face of the gear shaft body and the central position of the gear shaft body are arranged at the end parts of the two ends of the gear shaft body.
The end parts of the two ends of the planet gear shaft of the differential mechanism respectively penetrate through the shaft holes of the corresponding planet gears and are fixedly connected with the shell, the differential mechanism shell, the half axle gear, the planet gear shaft and the planet gear in the shell jointly form the main body part of the differential mechanism assembly, and lubricating oil in the shell can enter the oil passing channel to lubricate the planet gear shaft and the planet gear in the working process; meanwhile, lubricating oil can penetrate through the oil passage and enter a cavity formed between the planetary gear and the differential shell to take away heat and abrasive dust generated in the friction process, so that cleaner lubricating oil can enter the lubricating oil again to form virtuous circle, and the purposes of meeting the lubricating requirement and reducing faults are achieved.
Specifically, the planet gear shaft has the following two structures:
1. the end part of the gear shaft body is provided with opposite and parallel milling planes, and the milling planes are parallel to the axial direction of the gear shaft body. The cross section of the end part of the gear shaft body is a drum-shaped structure formed by two opposite arcs and two opposite straight lines, the two arc parts are contacted with the inner wall of the shaft hole of the planetary gear to support and limit the planetary gear, and a certain gap is formed between the milling plane and the shaft hole of the planetary gear to form the oil passing channel. The gear shaft body with the structure is convenient to process and high in strength, and the section of the oil passing channel can be designed to be large so as to facilitate the passing of lubricating oil.
2. The end surface of the gear shaft body is provided with a spiral groove extending along the axial direction of the gear shaft body, and the groove is the oil passing channel. When the planetary gear rotates, the lubricating oil in the shell can be stirred, so that the lubricating oil is forced to flow along the spiral groove (namely the oil passing channel), the speed of the lubricating oil flowing through the oil channel is increased, the lubricating oil at the oil passing channel can be updated more quickly, and better lubrication is realized.
Further, the rotation direction of the spiral grooves at the two ends of the gear shaft body is opposite, so that lubricating oil can flow through the oil passing channels at the two ends in opposite directions, and the lubricating oil at one end of the gear shaft body is prevented from flowing to the other end after being lubricated, and the lubricating effect is prevented from being influenced.
The end part of the planet gear shaft is provided with the oil passing channel with a unique structure, so that lubricating oil can flow through the oil passing channel during working, the planet gear shaft and the planet gear are lubricated more fully, and the problems of burn and shaft breakage of the planet gear shaft caused by insufficient lubrication are effectively avoided.
Drawings
Fig. 1 is a sectional view of a pinion shaft of embodiment 1.
Fig. 2 is a side view of the pinion shaft of embodiment 1.
Fig. 3 is a structural sectional view of the differential main body in embodiment 1.
Fig. 4 is a schematic structural view of the differential main body in embodiment 1.
Fig. 5 is a schematic structural view of the pinion shaft of embodiment 2.
The figures are numbered: 1. a gear shaft body; 11. milling a plane; 12. a helical groove; 2. a planetary gear shaft; 3. a planetary gear; 4. a housing; 5. and a side gear.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Example 1:
the present embodiment proposes a pinion shaft of a differential gear capable of making lubrication between the pinion shaft and the pinion gear more sufficient.
As shown in fig. 1 and 2, the planetary gear shaft of the present embodiment includes a gear shaft body 1 having a cylindrical structure, and oil passages communicating an end surface of the gear shaft body 1 with a central position of the gear shaft body 1 are provided at end portions of both ends of the gear shaft body 1. Specifically, the end of the gear shaft body 1 is provided with opposite and parallel milling planes 11, the milling planes 11 being parallel to the axial direction of the gear shaft body 1.
As shown in fig. 3 and 4, the ends of the planet gear shaft 2 of the differential gear respectively pass through the corresponding shaft holes of the planet gears 3 and are fixedly connected with the differential case 4, the side gear 5 in the case 4, the planet gear shaft 2 and the planet gears 3 jointly form the main body part of the differential assembly, the cross section of the end part of the gear shaft body 1 is a drum-shaped structure formed by two opposite arcs and two opposite straight lines, the two arcs are in contact with the inner wall of the shaft hole of the planet gear 3 and are used for supporting and limiting the planet gear 3, and a certain gap is formed between the milling plane 11 and the shaft hole of the planet gear 3 to form the oil passing channel. Lubricating oil in the shell 4 can enter the oil passing channel, and plays a role in lubricating the planetary gear shaft 2 and the planetary gear 3 in the working process; meanwhile, lubricating oil can penetrate through the oil passage and enter a cavity formed between the planetary gear 3 and the differential case 4, and heat and abrasive dust generated in the friction process are taken away, so that cleaner lubricating oil can enter the lubrication again, a virtuous cycle is formed, and the purposes of meeting the lubricating requirement and reducing faults are achieved.
Example 2:
as shown in fig. 5, unlike embodiment 1, in this embodiment, the oil passing channel is a spiral groove 12 provided on the end surface of the gear shaft body 1, the spiral groove 12 extends in the axial direction of the gear shaft body 1, and the rotation directions of the spiral grooves 12 at both ends of the gear shaft body 1 are opposite.
When the planetary gear 3 rotates, the lubricating oil in the shell 4 is stirred, so that the lubricating oil is forced to flow along the spiral groove (namely, the oil passing channel), the speed of the lubricating oil flowing through the oil passing channel is increased, the lubricating oil at the oil passing channel can be updated more quickly, and better lubrication is realized. Because the rotation directions of the spiral grooves 12 at the two ends of the gear shaft body 1 are opposite, the lubricating oil can flow through the oil passing channels at the two ends in opposite directions, and the lubricating oil at one end of the gear shaft body 1 is prevented from flowing to the other end after being lubricated, so that the lubricating effect is prevented from being influenced.
The utility model has been described in connection with the accompanying drawings, it is to be understood that the utility model is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the utility model is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (3)
1. The utility model provides a planetary gear axle of differential mechanism, includes the gear shaft body of cylindrical structure, its characterized in that, the both ends tip of gear shaft body is equipped with the oily passageway of intercommunication gear shaft body terminal surface department with gear shaft body central point department, the tip of gear shaft body is equipped with relative and parallel milling plane, milling plane is on a parallel with the axial of gear shaft body.
2. The planet shaft for a differential according to claim 1, wherein the end surface of the gear shaft body is provided with a helical groove extending in the axial direction of the gear shaft body.
3. The planet shaft of a differential according to claim 2, wherein the spiral grooves of the both ends of the shaft body are rotated in opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120475006.XU CN216279262U (en) | 2021-03-05 | 2021-03-05 | Planet gear shaft of differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120475006.XU CN216279262U (en) | 2021-03-05 | 2021-03-05 | Planet gear shaft of differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216279262U true CN216279262U (en) | 2022-04-12 |
Family
ID=81000768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120475006.XU Active CN216279262U (en) | 2021-03-05 | 2021-03-05 | Planet gear shaft of differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216279262U (en) |
-
2021
- 2021-03-05 CN CN202120475006.XU patent/CN216279262U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103080610B (en) | Fluid pressure generation device and drive unit | |
| CN109109640B (en) | Coaxial independent electric drive bridge and electric automobile | |
| CN210978405U (en) | Two-gear speed reducer of new energy automobile | |
| JP2976204B1 (en) | Lubrication structure in differential equipment | |
| JP2019533410A (en) | Input shaft structure with motor and reduction gear connected | |
| CN216279262U (en) | Planet gear shaft of differential mechanism | |
| CN219888692U (en) | Oil cooling lubricating structure of electric drive car differential mechanism | |
| CN210526275U (en) | Integrated electric drive assembly mechanism | |
| CN210739271U (en) | Forced lubrication single-planet-row gear mechanism | |
| CN112576718A (en) | High-power full-time transfer case differential mechanism and vehicle | |
| CN215634842U (en) | Bearing structure for coaxial arrangement of input shaft and output shaft | |
| CN113175520B (en) | Lubrication heat dissipation structure of sun gear | |
| CN212106889U (en) | Motor shaft and coaxial centering surface lubricating oil groove of reduction gear shaft of electric drive assembly | |
| CN212804168U (en) | Self-sealing differential mechanism structure lubricating system | |
| CN213206520U (en) | Lubricating structure for speed reducing motor input shaft spline | |
| CN201056162Y (en) | Full time transfer gear of vehicle | |
| CN110686054A (en) | Two speed reducer of new energy automobile | |
| CN207961480U (en) | A kind of differential casing with oil-way | |
| CN113389884A (en) | Planetary gear reducer and car | |
| CN114103613A (en) | Cooling and lubricating structure of electric shaft driving system, electric shaft driving system and automobile | |
| CN220015977U (en) | Differential mechanism, gearbox assembly and vehicle | |
| CN211720418U (en) | Motor shaft and coaxial centering structure of reduction gear axle in electric drive assembly | |
| CN220378828U (en) | Shafting supporting structure | |
| CN220416147U (en) | Novel differential mechanism structure | |
| CN217582922U (en) | Lubricating structure of input shaft and motor driving shaft of speed reducer and vehicle with lubricating structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |