CN212529191U - Oil distribution groove type rear axle housing - Google Patents
Oil distribution groove type rear axle housing Download PDFInfo
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- CN212529191U CN212529191U CN202020335865.4U CN202020335865U CN212529191U CN 212529191 U CN212529191 U CN 212529191U CN 202020335865 U CN202020335865 U CN 202020335865U CN 212529191 U CN212529191 U CN 212529191U
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- baffle
- rear axle
- oil
- driven bevel
- bevel gear
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Abstract
The utility model discloses a divide oil groove formula rear-axle housing, casing under the rear axle, first baffle and second baffle, the bottom of casing is equipped with the rear axle oil groove that is used for holding gear oil under the rear axle, first baffle and second baffle separate locate in the rear axle oil groove and both respectively with the inner wall fixed connection of casing under the rear axle, the bottom of first baffle and the bottom of second baffle all with gapped between the bottom of rear axle oil groove, driven bevel gear is rotatable to be located between first baffle and the second baffle, first baffle is located driven bevel gear tooth face side, the second baffle is located driven bevel gear's opposite side, the side of first baffle and the side of second baffle all with leave the interval between driven bevel gear's the side. The utility model discloses a divide oil groove formula rear-axle housing, reducible stirring oil loss promotes rear axle reduction gear efficiency, forms the orderly circulating lubrication system, ensures the lubricating efficiency and the cooling efficiency of gear oil.
Description
Technical Field
The utility model relates to a reduction gear rear axle housing especially relates to a divide oil groove formula rear axle housing.
Background
The rear axle speed reducer is a key part of a transmission system, and is used for lubricating and cooling a hyperboloid gear and a bearing by adopting gear oil, but the oil stirring resistance can reduce the transmission efficiency of the rear axle.
The fluid simulation analysis and the rear axle efficiency bench test show that: along with the increase of the working rotating speed, the larger the energy consumption of the gear oil stirring resistance moment is. The existing rear axle structure does not dredge and control the flowing of gear oil, and during working, the gear oil is stirred by the gear tooth surfaces and bolts on two sides of a driven bevel gear and is brought up, so that the oil level is fluctuated violently, the energy transmitted by an engine is consumed, and the kinetic energy and the heat energy of the gear oil are converted, and the transmission efficiency of the rear axle is low. The driven gear stirs the gear oil flow of the whole oil cavity, so that a large amount of oil generates violent fluctuation, and because the viscosity of the gear oil is higher, a large amount of kinetic energy is obtained in the gear stirring process, and the power of an engine is intercepted.
Disclosure of Invention
The utility model relates to a solve not enough among the prior art and accomplish, the utility model aims at providing a divide oil groove formula rear axle housing, reducible stirring oil loss promotes rear axle reduction gear efficiency, forms orderly circulating lubrication system, ensures the lubricating efficiency and the cooling efficiency of gear oil.
The utility model discloses a divide oil groove formula rear-axle housing, including rear axle lower casing, first baffle and second baffle, the bottom of rear axle lower casing is equipped with the rear axle oil groove that is used for holding gear oil, first baffle with the second baffle is located at the interval in the rear axle oil groove and both respectively with the inner wall fixed connection of rear axle lower casing, the bottom of first baffle with the bottom of second baffle all with gapped between the bottom of rear axle oil groove, driven bevel gear is rotatable to be located first baffle with between the second baffle, first baffle is located driven bevel gear tooth face side, the second baffle is located driven bevel gear's opposite side, the side of first baffle with the side of second baffle all with leave the interval between driven bevel gear's the side.
The utility model discloses a divide oil groove formula rear-axle housing can also be:
and the first baffle and the second baffle are fixedly welded with the lower rear axle shell.
The distance between the first baffle and the driven bevel gear is equal to or larger than 20 mm.
The distance between the second baffle and the driven bevel gear is equal to or larger than 20 mm.
The height of the top of the first baffle is greater than the height of the top of the rear axle lower shell at the installation position of the first baffle.
First baffle includes integrated into one piece's baffle upper portion and baffle lower part, the top of baffle lower part with the bottom fixed connection on baffle upper portion, the baffle lower part inlays to be located in the rear axle oil groove, the both sides wall of baffle lower part respectively with the inner wall fixed connection of casing under the rear axle, the bottom of baffle lower part with leave the clearance between the bottom of rear axle oil groove, both sides respectively around the bottom on baffle upper portion with both sides offset around the top of casing under the rear axle.
The utility model discloses a divide oil groove formula rear-axle housing, including rear axle lower casing, first baffle and second baffle, the bottom of rear axle lower casing is equipped with the rear axle oil groove that is used for holding gear oil, first baffle with the second baffle is located at the interval in the rear axle oil groove and both respectively with the inner wall fixed connection of rear axle lower casing, the bottom of first baffle with the bottom of second baffle all with gapped between the bottom of rear axle oil groove, driven bevel gear is rotatable to be located first baffle with between the second baffle, first baffle is located driven bevel gear tooth face side, the second baffle is located driven bevel gear's opposite side, the side of first baffle with the side of second baffle all with leave the interval between driven bevel gear's the side. Like this, the both sides of driven bevel gear in the rear axle oil groove respectively arrange a baffle (first baffle and second baffle), leave the clearance between the bottom inner wall of casing under two baffles and the rear axle to form the three groove of bottom intercommunication, gear oil can wherein flow, ensures the lubrication and the cooling action of gear oil. Rear axle reduction gear during operation, driven bevel gear operation, gear oil between two baffles is stirred by driven bevel gear and is thrown away, the oil level descends, because of the linker principle, the high gear oil of two baffle outside oil levels can flow to between two baffles through the bottom clearance, the gear oil that is thrown away by driven bevel gear rotation can splash and flow back, most can flow to the baffle outside, guarantee that the inboard oil level of baffle is in the low level, thereby form orderly circulation lubricating system, the lubricating efficiency and the cooling efficiency of gear oil have been guaranteed. Simultaneously, compare with the prior art that does not add the baffle, this structural design can eliminate the gear and rotate the stirring to the gear oil in the baffle outside, and the fluid volume that the gear stirring was taken up reduces, and the kinetic energy that fluid obtained reduces, and the loss of gear kinetic energy reduces to reduced the oil stirring loss, specific can reduce the oil stirring drag torque by 30%, rear axle reduction gear efficiency about promotes 4 thousandths. Compared with the prior art, the utility model discloses a divide oil groove formula rear-axle housing has following advantage: the oil stirring loss can be reduced, the efficiency of the rear axle reducer is improved, an ordered circulating lubrication system is formed, and the lubrication efficiency and the cooling efficiency of gear oil are ensured.
Drawings
Fig. 1 is the utility model relates to a structural schematic diagram of divide oil groove formula rear axle casing.
Fig. 2 is the utility model relates to a structural schematic diagram two of divide oil groove formula rear axle casing.
Fig. 3 is the utility model relates to a divide moment contrast map around optimization of oil groove formula rear axle casing.
Fig. 4 is the utility model relates to a boundary layer theoretical schematic diagram of oil separating tank formula rear axle casing.
Description of the figures
1 … lower rear axle casing 2 … first baffle 3 … second baffle
4 … driven bevel gear 5 … rear axle oil groove
Detailed Description
In the present invention, if directions (up, down, front, back, inside and outside) are described, the reference is made to the illustration in fig. 1. The following describes the oil separating tank type rear axle housing in further detail with reference to fig. 1 to 4.
The utility model relates to an oil-separating groove type rear axle shell, please refer to fig. 1 to 4, comprising a rear axle lower shell 1, a first baffle 2 and a second baffle 3, a rear axle oil groove 5 for containing gear oil is arranged at the bottom of the rear axle lower shell 1, the first baffle 2 and the second baffle 3 are arranged in the rear axle oil groove 5 at intervals and are respectively and fixedly connected with the rear axle lower shell 1, gaps are reserved between the bottom of the first baffle 2 and the bottom of the second baffle 3 and the bottom of the rear axle oil groove 5, the driven bevel gear 4 is rotatably arranged between the first baffle 2 and the second baffle 3, the first baffle 2 is positioned on the tooth surface side of the driven bevel gear 4, the second baffle 3 is positioned on the other side of the driven bevel gear 4, and a space is reserved between the side surface of the first baffle plate 2 and the side surface of the second baffle plate 3 and the side surface of the driven bevel gear. Like this, respectively arrange a baffle (first baffle 2 and second baffle 3) in the driven bevel gear 4's of rear axle oil groove 5 both sides, leave the clearance between the bottom inner wall of two baffles and rear axle lower casing 1 to form the three groove of bottom intercommunication, gear oil can wherein flow, ensures the lubrication and the cooling action of gear oil. Rear axle reduction gear during operation, driven bevel gear 4 operates, gear oil between two baffles is stirred by driven bevel gear 4 and is thrown away, the oil level descends, because of the linker principle, the high gear oil of two baffle outside oil levels can flow to between two baffles through the bottom clearance, the gear oil that is thrown away by driven bevel gear 4 rotation can splash and flow back to, most can flow to the baffle outside, guarantee that the inboard oil level of baffle is in the low level, thereby form orderly circulation lubricating system, the lubricating efficiency and the cooling efficiency of gear oil have been guaranteed. Simultaneously, compare with the prior art that does not add the baffle, this structural design can eliminate the gear and rotate the stirring to the gear oil in the baffle outside, and the fluid volume that the gear stirring was taken up reduces, and the kinetic energy that fluid obtained reduces, and the loss of gear kinetic energy reduces to reduced the oil stirring loss, specific can reduce the oil stirring drag torque by 30%, rear axle reduction gear efficiency about promotes 4 thousandths. Compared with the prior art, the utility model discloses a divide oil groove formula rear-axle housing has following advantage: the oil stirring loss can be reduced, the efficiency of the rear axle reducer is improved, an ordered circulating lubrication system is formed, and the lubrication efficiency and the cooling efficiency of gear oil are ensured.
The utility model discloses a divide oil groove formula rear-axle housing, on the basis of the technical scheme of preceding description, please refer to fig. 1 to fig. 4, can also be: and the first baffle 2 and the second baffle 3 are fixedly welded with the inner wall of the rear axle lower shell 1. Like this, two baffles adopt welding mode to fix on casing 1 under the rear axle, and the installation is simple, need not extra part installation, reduces part quantity, stable in structure.
The utility model discloses a divide oil groove formula rear-axle housing, on the basis of the technical scheme of preceding description, please refer to fig. 1 to fig. 4, can also be: the distance between the first baffle 2 and the driven bevel gear 4 is equal to or greater than 20 mm. Thus, the first shutter 2 is disposed as close as possible to the driven bevel gear 4, but a safety distance of 20mm or more is required.
The utility model discloses a divide oil groove formula rear-axle housing, on the basis of the technical scheme of preceding description, please refer to fig. 1 to fig. 4, can also be: the distance between the second baffle 3 and the driven bevel gear 4 is equal to or greater than 20 mm. Thus, the second shutter 3 is disposed as close as possible to the driven bevel gear 4, but a safety distance of 20mm or more is required.
The utility model discloses a divide oil groove formula rear-axle housing, on the basis of the technical scheme of preceding description, please refer to fig. 1 to fig. 4, can also be: the height of the top of the first baffle 2 is greater than the height of the top of the rear axle lower shell 1 at the installation position thereof. Thus, since the gear oil stirred up from the gear surface side of the driven bevel gear 4 is large and high, the height of the first baffle plate 2 is set high, which is beneficial to blocking the splashed gear oil and preventing the splashed gear oil from flowing back between the two baffle plates. On the basis of the technical solution described above, it is further preferable that the first baffle 2 includes an upper baffle portion and a lower baffle portion that are integrally formed, the top of the lower baffle portion is fixedly connected with the bottom of the upper baffle portion, the lower baffle portion is embedded in the rear axle oil groove 5, two side walls of the lower baffle portion are respectively fixedly connected with the inner wall of the rear axle lower housing 1, a gap is left between the bottom of the lower baffle portion and the bottom of the rear axle oil groove 5, and the front side and the rear side of the bottom of the upper baffle portion are respectively abutted to the front side and the rear side of the top of the rear axle lower housing 1. Like this, first baffle 2 designs for the shape of similar "T" shape, and the baffle lower part is inlayed and is established in rear axle oil groove 5, and baffle upper portion sets up in the top at rear axle lower casing 1 top, makes the height that highly surpasss rear axle lower casing 1 of first baffle, is favorable to blocking the gear oil that flies to splash back to length (fore-and-aft direction) on baffle upper portion surpasss the width (fore-and-aft direction) of rear axle oil groove 5, has further increased the baffle area that is used for blocking the gear oil that flies to splash back of first baffle 2.
Optimize front-to-back moment contrast (N · m) (as shown in fig. 3):
the theoretical basis for setting the baffle is a boundary layer theory, which specifically comprises the following steps:
boundary layer: the velocity v flows over the stationary plate and the fluid boundary adheres to the plate in a thin layer in which the velocity of the fluid gradually increases from zero at the plate to the highest velocity v, called the boundary layer, the boundary layer thickness being defined by the distance δ (x) from the plate face in the normal direction to the velocity 0.99v, as shown in fig. 4.
According to the boundary layer theory: when the gear stirs oil, also can form similar boundary layer between baffle and the gear, the oil speed of stirring just can reduce to zero at the baffle after adding the baffle for the oil in the baffle outside can not stirred by the gear. When the gear runs, the oil is driven to splash, and compared with the mode that no baffle is added, the oil amount brought by the gear stirring is reduced, the kinetic energy obtained by the oil is reduced, and the loss of the gear kinetic energy is reduced. Thereby reducing churning losses.
The above description is only for the specific embodiments of the present invention, but not for the scope of the present invention, all equivalent changes or modifications made according to the design spirit of the present invention should be considered as falling into the scope of the present invention.
Claims (6)
1. The utility model provides a divide oil groove formula rear axle casing which characterized in that: the rear axle oil groove is formed in the bottom of the rear axle lower shell, the first baffle and the second baffle are arranged in the rear axle oil groove at intervals and are fixedly connected with the inner wall of the rear axle lower shell respectively, a gap is formed between the bottom of the first baffle and the bottom of the second baffle and the bottom of the rear axle oil groove, the driven bevel gear is rotatably arranged between the first baffle and the second baffle, the first baffle is located on the tooth side of the driven bevel gear, the second baffle is located on the other side of the driven bevel gear, and a gap is formed between the side face of the first baffle and the side face of the second baffle and the side face of the driven bevel gear.
2. The oil distribution groove type rear axle shell as claimed in claim 1, wherein: and the first baffle and the second baffle are fixedly welded with the inner wall of the rear axle lower shell.
3. The oil distribution groove type rear axle shell as claimed in claim 1, wherein: the distance between the first baffle and the driven bevel gear is equal to or larger than 20 mm.
4. The oil distribution groove type rear axle shell as claimed in claim 1, wherein: the distance between the second baffle and the driven bevel gear is equal to or larger than 20 mm.
5. The oil-separating tank type rear axle housing as claimed in any one of claims 1 to 4, wherein: the height of the top of the first baffle is greater than the height of the top of the rear axle lower shell at the installation position of the first baffle.
6. The oil distribution groove type rear axle shell as claimed in claim 5, wherein: first baffle includes integrated into one piece's baffle upper portion and baffle lower part, the top of baffle lower part with the bottom fixed connection on baffle upper portion, the baffle lower part inlays to be located in the rear axle oil groove, the both sides wall of baffle lower part respectively with the inner wall fixed connection of casing under the rear axle, the bottom of baffle lower part with leave the clearance between the bottom of rear axle oil groove, both sides respectively around the bottom on baffle upper portion with both sides offset around the top of casing under the rear axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020335865.4U CN212529191U (en) | 2020-03-17 | 2020-03-17 | Oil distribution groove type rear axle housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020335865.4U CN212529191U (en) | 2020-03-17 | 2020-03-17 | Oil distribution groove type rear axle housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212529191U true CN212529191U (en) | 2021-02-12 |
Family
ID=74526815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020335865.4U Active CN212529191U (en) | 2020-03-17 | 2020-03-17 | Oil distribution groove type rear axle housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212529191U (en) |
-
2020
- 2020-03-17 CN CN202020335865.4U patent/CN212529191U/en active Active
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