CN210600108U - Oil guiding and ventilating structure of secondary speed reducer of new energy automobile - Google Patents
Oil guiding and ventilating structure of secondary speed reducer of new energy automobile Download PDFInfo
- Publication number
- CN210600108U CN210600108U CN201920962339.8U CN201920962339U CN210600108U CN 210600108 U CN210600108 U CN 210600108U CN 201920962339 U CN201920962339 U CN 201920962339U CN 210600108 U CN210600108 U CN 210600108U
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- Prior art keywords
- labyrinth
- speed reducer
- oil
- oil guide
- shell
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 129
- 239000003921 oil Substances 0.000 claims abstract description 104
- 239000012208 gear oil Substances 0.000 claims abstract description 57
- 238000009423 ventilation Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a new energy automobile secondary reducer's oil guide ventilation structure, including setting up the labyrinth cavity in motor casing and speed reducer shell, the labyrinth cavity is including setting up motor casing middle shaft gear oil guide plate, motor casing input shaft gear oil guide plate, the motor casing owner that sets up in the motor casing subtract gear oil guide plate, the outside shelves oil board of motor casing labyrinth, the inside shelves oil guide plate of motor casing labyrinth and set up the speed reducer casing middle shaft gear oil guide plate, speed reducer casing input shaft gear oil guide plate, speed reducer casing owner that subtracts gear oil guide plate, the outside shelves oil board of speed reducer casing labyrinth, the inside shelves oil guide plate I of speed reducer casing labyrinth, the inside shelves oil guide plate II of speed reducer casing labyrinth. The utility model discloses can realize the inside oil-gas separation of reduction gear to reach and reduce reduction gear internal pressure, the purpose of oil spout phenomenon appears when preventing the high-speed operation of gear.
Description
Technical Field
The utility model belongs to the technical field of new energy automobile, specifically be a new energy automobile second reduction gear lead oil ventilation structure is related to.
Background
The speed reducer of the existing electric new energy automobile is developed vigorously, and particularly the secondary speed reducer occupies the mainstream market. Because the highest rotational speed of new energy automobile secondary reducer is higher than the rotational speed of traditional fuel vehicle derailleur far away, when the inside gear high-speed rotation of secondary reducer, the high-speed phenomenon of splashing will appear in the inside lubricating oil of its cavity, and under the condition that just is full of fluid at high pressure simultaneously, the conventional reduction gear of enclosing fender formula labyrinth structure will appear and last the oil spout phenomenon, causes the unable requirement of satisfying the ventilation and not leaking oil.
At present, in order to achieve the purposes of ventilation and oil leakage, the speed reducer structures on the market comprise the following three types:
1) a guard plate is fixed on the labyrinth of the shell through a bolt to form a labyrinth passage, and the reducer with the structure needs to be additionally provided with guard plates and bolt parts and a machining process of the shell;
2) a long pipe vent plug is additionally arranged on a conventional enclosure type labyrinth, and the reducer with the structure can cause the large occupied space of the reducer on the whole vehicle and influence the arrangement of the whole vehicle.
3) The oil-free area on the shell is provided with the valve core assembly type vent plug, and the speed reducer with the structure can cause the cavity of the speed reducer shell to have higher requirements and can increase the manufacturing cost of the speed reducer.
SUMMERY OF THE UTILITY MODEL
To the above prior art, the to-be-solved technical problem of the utility model lies in providing a can realize oil-gas separation and reduce new energy automobile second reduction gear's of reduction gear internal pressure oil drain ventilation structure.
In order to solve the technical problem, the utility model provides an oil guiding and ventilating structure of a new energy automobile secondary speed reducer, including setting up the labyrinth cavity in motor casing and speed reducer shell, the labyrinth cavity includes that the motor casing middle shaft gear oil guiding gusset that sets up in the motor casing, motor casing input shaft gear oil guiding gusset, motor casing main reduction gear oil guiding gusset, motor casing labyrinth outside gear oil board, motor casing labyrinth inside gear oil gusset and the speed reducer casing middle shaft gear oil guiding gusset that sets up in the speed reducer shell, speed reducer casing input shaft gear oil guiding gusset, speed reducer casing main reduction gear oil guiding gusset, speed reducer casing labyrinth outside gear oil board, speed reducer casing labyrinth inside gear oil gusset I, speed reducer casing labyrinth inside gear oil gusset II; a motor casing labyrinth first inner cavity and a motor casing labyrinth second inner cavity are arranged on two sides of the oil baffle plate in the motor casing labyrinth, a first air vent which can enable the motor casing labyrinth first inner cavity to be communicated with the motor casing oil cavity is arranged on the oil baffle plate outside the motor casing labyrinth, and an air vent which can be communicated with the motor casing labyrinth second inner cavity is also arranged on the motor casing; the two sides of the oil baffle plate I in the labyrinth of the speed reducer shell are provided with a third inner cavity of the labyrinth of the speed reducer shell and a second inner cavity of the labyrinth of the speed reducer shell, the two sides of the oil baffle plate II in the labyrinth of the speed reducer shell are provided with a second inner cavity of the labyrinth of the speed reducer shell and a first inner cavity of the labyrinth of the speed reducer shell, a second air port capable of communicating the first inner cavity of the labyrinth of the speed reducer shell and the oil baffle plate outside the labyrinth of the speed reducer shell is arranged between the main reduction gear oil guide plate of the speed reducer shell and the oil baffle plate outside the labyrinth of the speed reducer shell, and a third air.
Preferably, the oil guide rib plate of the intermediate shaft gear of the motor shell and the oil guide rib plate of the intermediate shaft gear of the reducer shell are both arranged to be arc shapes concentric with the intermediate shaft gear.
Preferably, the oil guide rib plate of the main reduction gear of the motor shell and the oil guide rib plate of the main reduction gear of the reducer shell are both arranged in an arc shape concentric with the main reduction gear.
Compared with the prior art, the beneficial effects of the utility model are that: through the labyrinth cavity that designs and the integrative casting shaping of second reduction gear casing in the second reduction gear casing, this labyrinth cavity designs to mainly constitute by leading oil gusset and fender oil gusset, sets up blow vent, air vent and cooling oil backward flow mouth simultaneously in the reasonable position on the labyrinth cavity, just so can realize the inside oil-gas separation of reduction gear to reach and reduce reduction gear internal pressure, the purpose that oil spout phenomenon appears when preventing that the high-speed operation of gear from. Meanwhile, through the labyrinth cavity design, the purposes of reducing the size of the speed reducer, saving the processing time and the assembly time of the shell, simplifying the shell structure and reducing the manufacturing cost can be realized.
Drawings
Fig. 1 is the utility model relates to a motor casing internal structure schematic diagram among new energy automobile second reduction gear's oil guide ventilation structure.
Fig. 2 is a schematic view of the internal structure of the corresponding speed reducer case in fig. 1.
Fig. 3 is a perspective view of a labyrinth portion of the reduction gear case in fig. 2.
FIG. 4 is a schematic diagram of oil-gas flow inside a forward gear of the two-stage speed reducer.
Fig. 5 is a schematic structural diagram of internal transmission components of the two-stage speed reducer.
Illustration of the drawings: 1-motor housing jackshaft gear oil guide rib plate, 2-motor housing input shaft gear oil guide rib plate, 3-motor housing main reduction gear oil guide rib plate, 4-motor housing labyrinth outer oil guide plate, 5-motor housing labyrinth inner oil guide rib plate, 6-first vent, 7-vent, 8-motor housing labyrinth first inner cavity, 9-motor housing labyrinth second inner cavity, 10-reducer housing jackshaft gear oil guide rib plate, 11-reducer housing input shaft gear oil guide rib plate, 12-reducer housing main reduction gear oil guide rib plate, 13-reducer housing labyrinth outer oil guide plate, 14-reducer housing labyrinth inner oil guide rib plate I, 15-reducer housing labyrinth inner oil guide rib plate II, 16-second vent, 17-reducer housing labyrinth first inner cavity, 18-a second inner cavity of a speed reducer shell labyrinth, 19-a third inner cavity of the speed reducer shell labyrinth, 20-a third air vent, 21-a cooling oil return port, 22-a lubricating oil flow direction thrown out by an input shaft gear, 23-a lubricating oil flow direction thrown out by an intermediate shaft gear, 24-a lubricating oil flow direction thrown out by a main reducing gear, 25-an oil-free impact area, 26-a differential bearing, 27-a differential, 28-the main reducing gear, 29-the intermediate shaft gear, 30-a gear and 31-the input shaft gear.
Detailed Description
The invention will be further described with reference to the drawings and preferred embodiments.
Fig. 1 to fig. 3 show that the utility model relates to a new energy automobile secondary reducer leads oily air-vent structure's structural schematic diagram, including setting up the labyrinth cavity in motor casing and speed reducer shell, this labyrinth cavity and motor casing and speed reducer shell integrated into one piece cast. Specifically, the labyrinth cavity comprises a motor shell intermediate shaft gear oil guide rib plate 1 arranged in a motor shell, a motor shell input shaft gear oil guide rib plate 2, a motor shell main reduction gear oil guide rib plate 3, a motor shell labyrinth external oil baffle plate 4, a motor shell labyrinth internal oil baffle plate 5, a speed reducer shell intermediate shaft gear oil guide rib plate 10 arranged in a speed reducer shell, a speed reducer shell input shaft gear oil guide rib plate 11, a speed reducer shell main reduction gear oil guide rib plate 12, a speed reducer shell labyrinth external oil baffle plate 13, a speed reducer shell labyrinth internal oil baffle plate I14 and a speed reducer shell labyrinth internal oil baffle plate II 15. The motor casing middle shaft gear oil guide rib plate 1, the motor casing input shaft gear oil guide rib plate 2, the motor casing main reduction gear oil guide rib plate 3, the motor casing labyrinth outer oil baffle plate 4, the reducer casing middle shaft gear oil guide rib plate 10, the reducer casing input shaft gear oil guide rib plate 11, the reducer casing main reduction gear oil guide rib plate 12 and the reducer casing labyrinth outer oil baffle plate 13 are arranged in a one-to-one correspondence manner; meanwhile, the motor casing intermediate shaft gear oil guide rib plate 1 and the reducer casing intermediate shaft gear oil guide rib plate 10 are both arranged to be arc shapes concentric with the intermediate shaft gear 29, and the motor casing main reduction gear oil guide rib plate 3 and the reducer casing main reduction gear oil guide rib plate 12 are both arranged to be arc shapes concentric with the main reduction gear 28; furthermore, the gear oil guide rib plate 2 of the motor shell input shaft can be sequentially connected with the motor shell labyrinth external oil baffle plate 4 and the motor shell main reduction gear oil guide rib plate 3, and the gear oil guide rib plate 11 of the reducer shell input shaft can be connected with the reducer shell labyrinth external oil baffle plate 13; in addition, a motor casing labyrinth first inner cavity 8 and a motor casing labyrinth second inner cavity 9 are arranged on two sides of the motor casing labyrinth inner oil baffle plate 5, a first vent 6 which can enable the motor casing labyrinth first inner cavity 8 to be communicated with the motor casing oil cavity is arranged on the motor casing labyrinth outer oil baffle plate 4, a vent hole 7 which can be communicated with the motor casing labyrinth second inner cavity 9 is also arranged on the motor casing, a speed reducer casing labyrinth third inner cavity 19 and a speed reducer casing labyrinth second inner cavity 18 are arranged on two sides of the speed reducer casing labyrinth inner oil baffle plate I14, a speed reducer casing labyrinth second inner cavity 18 and a speed reducer casing labyrinth first inner cavity 17 are arranged on two sides of the speed reducer casing labyrinth inner oil baffle plate II 15, a second vent 16 which can enable the speed reducer casing labyrinth first inner cavity 17 to be communicated with the speed reducer casing is arranged between the speed reducer casing main reducing gear oil guide plate 12 and the speed reducer casing labyrinth outer oil baffle plate 13, the oil baffle rib plate I14 in the labyrinth of the speed reducer shell is provided with a third vent hole 20 and a cooling oil return hole 21. Through the series of structural design, a labyrinth cavity is formed in the motor shell and the speed reducer shell.
The working principle of the utility model is as follows:
as shown in fig. 4 and 5, when the secondary speed reducer is in a high-speed forward gear, the lubricating oil thrown out from the input shaft gear 31 can be blocked by the oil guide rib plate 11 of the input shaft gear of the speed reducer housing, and the lubricating oil flows to the lower end of the oil cavity of the speed reducer along the structural characteristics of the oil guide rib plate 11 of the input shaft gear of the speed reducer housing (the flow direction of the lubricating oil thrown out from the input shaft gear is shown as 22 in fig. 4), so that the oil is prevented from directly entering the labyrinth cavity to generate an oil spraying phenomenon; most of lubricating oil thrown out by the gear 30 can be blocked by the oil guide rib plate 10 of the intermediate shaft gear of the speed reducer shell, and the lubricating oil flows to a differential bearing 26 arranged on the speed reducer shell along the arc-shaped structural characteristic of the oil guide rib plate 10 of the intermediate shaft gear of the speed reducer shell along the current direction (the flow direction of the lubricating oil thrown out by the intermediate shaft gear is shown as 23 in figure 4), so that the oil is prevented from directly entering a labyrinth cavity to generate an oil spraying phenomenon; the lubricating oil thrown out by the main reducing gear 28 can be blocked by the oil guide rib plate 3 of the main reducing gear of the motor casing, and the lubricating oil flows to the intermediate shaft gear 29 along the arc-shaped structural characteristic of the oil guide rib plate 3 of the main reducing gear of the motor casing (the flow direction of the lubricating oil thrown out by the main reducing gear is shown as 24 in figure 4), so that the oil is prevented from directly entering a labyrinth cavity to generate an oil spraying phenomenon; lubricating oil thrown out by the intermediate shaft gear 29 can be blocked by the intermediate shaft gear oil guide rib plate 1 of the motor casing, and the lubricating oil flows to the differential 27 along the arc-shaped structural characteristic of the intermediate shaft gear oil guide rib plate 1 of the motor casing to lubricate the planetary gear of the differential and a differential bearing 26 arranged on the motor casing, so that the oil is prevented from directly entering a labyrinth cavity to generate an oil injection phenomenon.
Meanwhile, through the combined action of the oil guide rib plate 1 of the middle shaft gear of the motor shell, the oil guide rib plate 2 of the input shaft gear of the motor shell, the oil guide rib plate 3 of the main reducing gear of the motor shell, the oil guide rib plate 4 outside the labyrinth of the motor shell, the oil guide rib plate 10 of the middle shaft gear of the reducer shell, the oil guide rib plate 11 of the input shaft gear of the reducer shell, the oil guide rib plate 12 of the main reducing gear of the reducer shell and the oil guide rib plate 13 outside the labyrinth of the reducer shell, an oil-free impact area 25 can be formed inside the reducer, thus, water vapor formed in the reducer can be converged in the oil-free impact area 25, and can enter the first inner cavity 17 of the labyrinth of the reducer shell through the second air vent 16, then enter the first inner cavity 8 of the motor shell, then enter the second inner cavity 18 of the labyrinth of the reducer shell, then enter the third inner cavity 19, and finally discharged to the outside of the decelerator through the vent hole 7.
Furthermore, after the speed reducer runs at a high speed for a long time, the temperature in the box body rises, lubricating oil in the speed reducer can be changed in quality to be atomized, oil bubbles are formed and enter the labyrinth cavity, at the moment, the oil guide rib plates 5 in the motor casing labyrinth in the labyrinth cavity, the oil guide rib plates 14 in the speed reducer casing labyrinth and the oil guide rib plates 15 in the speed reducer casing labyrinth have the function of cooling oil bubbles, oil gas can be discharged from the vent holes 7 under the action of the pressure in the speed reducer, the oil bubbles can be punctured like a screen mesh by the third vent hole 20 and the cooling oil return port 21, the oil gas bubbles entering the labyrinth cavity are broken and cooled and solidified into oil drops, and finally the oil drops can return to the oil cavity of the speed reducer through the first vent hole 6.
The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (3)
1. The utility model provides a new energy automobile secondary reducer leads oil ventilation structure, is including setting up the labyrinth cavity in motor casing and speed reducer shell, its characterized in that: the labyrinth cavity comprises a motor shell intermediate shaft gear oil guide rib plate (1), a motor shell input shaft gear oil guide rib plate (2), a motor shell main reduction gear oil guide rib plate (3), a motor shell labyrinth external oil baffle plate (4), a motor shell labyrinth internal oil baffle plate (5), a speed reducer shell intermediate shaft gear oil guide rib plate (10), a speed reducer shell input shaft gear oil guide rib plate (11), a speed reducer shell main reduction gear oil guide rib plate (12), a speed reducer shell labyrinth external oil baffle plate (13), a speed reducer shell labyrinth internal oil baffle plate I (14) and a speed reducer shell labyrinth internal oil baffle plate II (15) which are arranged in a speed reducer shell;
a motor casing labyrinth first inner cavity (8) and a motor casing labyrinth second inner cavity (9) are arranged on two sides of the oil baffle plate (5) in the motor casing labyrinth, a first air vent (6) capable of communicating the motor casing labyrinth first inner cavity (8) with the motor casing oil cavity is arranged on the oil baffle plate (4) outside the motor casing labyrinth, and an air vent (7) capable of communicating with the motor casing labyrinth second inner cavity (9) is further arranged on the motor casing;
the two sides of the oil baffle plate I (14) in the labyrinth of the speed reducer shell are provided with a third inner cavity (19) of the labyrinth of the speed reducer shell and a second inner cavity (18) of the labyrinth of the speed reducer shell, the two sides of the oil baffle plate II (15) in the labyrinth of the speed reducer shell are provided with a second inner cavity (18) of the labyrinth of the speed reducer shell and a first inner cavity (17) of the labyrinth of the speed reducer shell, a second vent (16) which can enable the first inner cavity (17) of the labyrinth of the speed reducer shell to be communicated with an oil cavity of the speed reducer shell is arranged between the main reduction gear oil guide plate (12) of the speed reducer shell and the oil baffle plate (13) outside the labyrinth of the speed reducer shell, and a third vent (20) and a cooling oil.
2. The oil guiding and ventilating structure of the secondary speed reducer of the new energy automobile according to claim 1, characterized in that: the motor shell intermediate shaft gear oil guide rib plate (1) and the reducer shell intermediate shaft gear oil guide rib plate (10) are both arranged to be arc shapes concentric with the intermediate shaft gear (29).
3. The oil guiding and ventilating structure of the secondary speed reducer of the new energy automobile according to claim 1, characterized in that: the motor shell main reduction gear oil guide rib plate (3) and the reducer shell main reduction gear oil guide rib plate (12) are both arranged to be arc shapes concentric with the main reduction gear (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962339.8U CN210600108U (en) | 2019-06-25 | 2019-06-25 | Oil guiding and ventilating structure of secondary speed reducer of new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962339.8U CN210600108U (en) | 2019-06-25 | 2019-06-25 | Oil guiding and ventilating structure of secondary speed reducer of new energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210600108U true CN210600108U (en) | 2020-05-22 |
Family
ID=70696307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920962339.8U Expired - Fee Related CN210600108U (en) | 2019-06-25 | 2019-06-25 | Oil guiding and ventilating structure of secondary speed reducer of new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210600108U (en) |
-
2019
- 2019-06-25 CN CN201920962339.8U patent/CN210600108U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 169, Meilin street, economic and Technological Development Zone, Nanchang City, Jiangxi Province Patentee after: Magna powertrain (Jiangxi) Co.,Ltd. Address before: No. 169, Meilin street, Changbei Economic and Technological Development Zone, Nanchang City, Jiangxi Province Patentee before: GETRAG (JIANGXI) TRANSMISSION Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |