CN109185439B - Electric automobile fixed shaft type two-gear gearbox splash lubrication system - Google Patents
Electric automobile fixed shaft type two-gear gearbox splash lubrication system Download PDFInfo
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- CN109185439B CN109185439B CN201811280767.9A CN201811280767A CN109185439B CN 109185439 B CN109185439 B CN 109185439B CN 201811280767 A CN201811280767 A CN 201811280767A CN 109185439 B CN109185439 B CN 109185439B
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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
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
- F16H57/0452—Oil pans
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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
- F16H57/0457—Splash lubrication
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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
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
A splash lubrication system of a fixed-shaft type two-gear gearbox of an electric automobile relates to the field of lubrication of vehicle transmission machinery; comprises a box body and a box cover; the opening ends of the box body and the box cover are butted to form a closed cavity; a first oil collecting pool, a second oil collecting pool and a box body oil guide groove are arranged in the box body; the first oil collecting pool is arranged in the middle of the first middle through hole and the first output through hole; the second oil collecting pool is arranged at the top of the first middle through hole; the box body oil guide groove is arranged at the top of the first input through hole; a third oil collecting tank and a tank cover oil guide groove are arranged in the tank cover; the third oil collecting pool and the box cover oil guide groove are both arranged on the inner wall of the top of the box cover; the third oil collecting pool is arranged right above the second output through hole; the box cover oil guide groove is arranged above the second input through hole; the invention effectively improves the splash lubrication flow and meets the lubrication requirement of each shaft bearing when the gearbox continuously operates.
Description
Technical Field
The invention relates to the field of vehicle transmission mechanical lubrication, in particular to a splash lubrication system for a fixed-shaft type two-gear gearbox of an electric automobile.
Background
The gearbox is a key part of an electric automobile transmission system. In view of cost reduction and system complexity, the current electric automobile widely adopts a shaft drive structure, namely, each drive axle is provided with an electric motor, the electric motor inputs driving force into a gear box arranged at the middle section of the drive axle, the left side and the right side of the gear box are respectively provided with an output end, and the power is output to left and right wheels through half shafts. The gearbox plays the key roles of transmission, speed reduction, speed change and differential speed of wheels on two sides.
The electric automobile gearbox has the characteristic of few gears because the motor has a wider constant-torque rotating speed range, the two-gear gearbox is widely applied to medium and large electric automobiles at present, and the fixed-shaft type two-gear gearbox has the advantages of simple structure, good reliability and production inheritance, and is a more common structural form.
The related calculation and analysis show that a gear splash lubrication mode can be adopted on the fixed-shaft type two-gear gearbox of the electric automobile within 100kW of rated power, so that mechanisms such as a lubrication pump and a valve are omitted, and the requirements of integration, miniaturization and light weight of transmission parts of the electric automobile are met.
In the design of a conventional splash lubrication system, oil is stirred when a gear of a gearbox rotates, is stored in tooth surfaces, a top gap and a side gap space and is driven by a rotating gear, and splashes to internal parts of a box body for lubrication due to centrifugal action. In the lubricating mode, oil splashes and flows down along the surfaces of the parts under the action of gravity, so that the flow direction of the splashed oil cannot be effectively planned, and the parts such as a bearing, a differential and the like which need to be fully lubricated cannot be lubricated.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the splash lubrication system for the fixed-shaft type two-gear gearbox of the electric automobile, which effectively improves the splash lubrication flow and meets the lubrication requirement of bearings of each shaft when the gearbox continuously operates.
The above purpose of the invention is realized by the following technical scheme:
a fixed-shaft two-gear gearbox splash lubrication system of an electric automobile comprises a box body and a box cover; the box body and the box cover are both of hollow semi-shell structures which are vertically placed; the opening ends of the box body and the box cover are butted to form a closed cavity; the bottom of the cavity is filled with external lubricating liquid; the box body is provided with a first input through hole, a first middle through hole and a first output through hole; the first middle through hole is arranged in the middle of the box body; the first input through hole is horizontally arranged on one side of the first middle through hole; the first output through hole is horizontally arranged on the other side of the first middle through hole; the first middle through hole is correspondingly butted with the external middle oil stirring gear; the first input through hole is correspondingly butted with an external input oil stirring gear; the first output through hole is correspondingly butted with an external output oil stirring gear; the external input oil mixing gear is in meshed butt joint with the external middle oil mixing gear; the external middle oil mixing gear is in meshing butt joint with the external output oil mixing gear.
In the splash lubrication system for the fixed-shaft type two-gear gearbox of the electric automobile, a first oil collecting tank, a second oil collecting tank and a box body oil guide groove are arranged in the box body; the first oil collecting pool, the second oil collecting pool and the box body oil guide groove are all arranged on the inner wall of the top of the box body; the first oil collecting pool is arranged in the middle of the first middle through hole and the first output through hole; the second oil collecting pool is arranged at the top of the first middle through hole; the oil guide groove of the box body is arranged at the top of the first input through hole.
In the splash lubrication system for the fixed-shaft type two-gear gearbox of the electric automobile, an included angle between the first oil collecting tank and the axis of the first middle through hole is 40-60 degrees along the vertical direction; the included angle between the second oil collecting pool and the axis of the first middle through hole along the vertical direction is 8-15 degrees; the oil guide groove of the box body and the axis of the first input through hole form an included angle of 45-60 degrees along the vertical direction.
In the splash lubrication system for the fixed-shaft type two-gear gearbox of the electric automobile, a second input through hole, a second middle through hole and a second output through hole are formed in the positions, corresponding to the box body, of the box cover; the second middle through hole is correspondingly butted with the external middle oil stirring gear; the second input through hole is correspondingly butted with an external input oil stirring gear; the second output through hole is correspondingly butted with an external output oil stirring gear; the external input oil mixing gear is in meshed butt joint with the external middle oil mixing gear; the external middle oil mixing gear is in meshing butt joint with the external output oil mixing gear.
In the above described fixed-shaft two-gear transmission splash lubrication system for an electric vehicle, a third oil collecting tank and a tank cover oil guide tank are arranged inside a tank cover; the third oil collecting pool and the box cover oil guide groove are both arranged on the inner wall of the top of the box cover; the third oil collecting pool is arranged right above the second output through hole; the oil guide groove of the box cover is arranged above the second input through hole.
In the fixed-shaft two-gear transmission splash lubrication system for the electric automobile, the box cover oil guide groove and the box body oil guide groove are arranged correspondingly; when the box body and the box cover are butted to form a closed cavity, the box cover oil guide groove and the box body oil guide groove are butted to form a herringbone integral oil guide groove; the herringbone integral oil guide groove is downwards inclined from the butt joint position of the box body and the box cover to two sides; the inclination angle is 5-10 degrees.
In the above splash lubrication system for the fixed-shaft two-gear transmission of the electric vehicle, the lubrication process of the splash lubrication system is as follows:
the external input oil stirring gear is immersed in external lubricating liquid; the external input oil mixing gear rotates clockwise relative to the box body to drive the external middle oil mixing gear to rotate anticlockwise and drive the external output oil mixing gear to rotate clockwise; the herringbone integral oil guide groove formed by the box cover oil guide groove and the box body oil guide groove realizes the collection of lubricating liquid sputtered by an externally input oil stirring gear; the first oil collecting pool and the second oil collecting pool are used for collecting lubricating liquid sputtered by the external middle oil stirring gear; the third oil collecting pool collects the lubricating liquid sputtered by the external output oil stirring gear.
In the splash lubrication system for the fixed-shaft type two-gear transmission of the electric automobile, oil guide pipes are arranged on two sides of a herringbone integral oil guide groove formed by the box cover oil guide groove and the box body oil guide groove; the lubricating liquid collected by the herringbone integral oil guide groove is guided into a bearing of an external input oil stirring gear to realize lubrication; oil guide pipes are arranged at the bottoms of the first oil collecting pool and the second oil collecting pool, so that lubricating liquid collected by the first oil collecting pool and the second oil collecting pool is guided to the bearing of the external middle oil stirring gear to realize lubrication; and the bottom of the third oil collecting pool is provided with an oil guide pipe, so that the lubricating liquid collected by the third oil collecting pool is guided into the bearing of the external output oil stirring gear to realize lubrication.
In the splash lubrication system for the fixed-shaft type two-gear gearbox of the electric automobile, the first oil collecting pool, the second oil collecting pool and the third oil collecting pool are all spoon-shaped structures; the oil collecting pool comprises a vertical wall, a bottom plate, a baffle wall and a side wall; wherein, the vertical wall is a vertically placed plate-shaped structure; the top end of the vertical wall is fixedly connected with the inner wall of the top end of the box body or the box cover; one end of the upper surface of the bottom plate is fixedly connected with the bottom end of the vertical wall; the retaining wall is vertically fixed at the opposite end of the upper surface of the bottom plate; the side wall is fixedly arranged between the vertical wall and the retaining wall; and the side wall realizes the sealing of the side surface of the bottom plate.
In the splash lubrication system for the fixed-shaft type two-gear gearbox of the electric automobile, the inclined angle of the bottom plate is upwards fixedly connected with the vertical wall; the included angle between the bottom plate and the horizontal direction is 5-10 degrees.
Compared with the prior art, the invention has the following advantages:
(1) the design that the oil guide grooves, the oil collecting pool, the oil baffle plate and the oil duct are additionally arranged on the box body and the box cover is adopted, so that splashed oil is effectively collected, the flow direction of the collected lubricating oil is effectively planned, and the lubrication of bearings in the two gear boxes is realized;
(2) the oil guide device adopts a herringbone oil guide groove structure design, so that oil splashed by the oil stirring gear is respectively guided to the bearings on the two sides of the box body, and the problem that the bearings which are far away in the axial direction cannot be lubricated due to the fact that the oil stirring gear is offset to one side of the box body is solved;
(3) the invention adopts the method that the rib-shaped bulges are cast on the outer wall surfaces of the box body and the box cover parts, and the lubricating oil channel is formed by drilling the oil channel in the rib-shaped bulges, thereby realizing the integration of the lubricating system and the light weight of the box body;
(4) the oil stirring gear adopts the arrangement mode that the oil collecting pool is arranged in the circumferential direction of the oil stirring gear, the length of the oil pool positioned in front of the oil splashing path in the direction of the axis of the gear is shortened, and the oil pool positioned in front of the oil splashing path is prevented from shielding the oil pool positioned behind the oil splashing path;
(5) the invention adopts the oil collecting tank with the spoon-shaped structure, and the bottom plate of the oil collecting tank inclines towards the inlet direction of the lubricating pipeline, thereby improving the flowing speed of the splashing lubricating oil and increasing the lubricating flow.
Drawings
FIG. 1 is a top plan view of the splash lubrication system of the present invention;
FIG. 2 is a schematic view of the internal structure of the case according to the present invention;
FIG. 3 is a schematic view of the internal structure of the case cover according to the present invention;
FIG. 4 is a schematic view of a chevron-shaped integral oil guide groove according to the present invention;
FIG. 5 is a schematic view of an oil sump according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
aiming at the structural characteristics of the two-half type split-box structure of the three-shaft two-gear fixed-shaft gearbox, the invention designs an integrated lubricating system which can effectively collect oil splashed by the gears and guide the oil splashed by the gears to the bearing part by arranging the structures such as the oil collecting pool, the oil guide groove, the oil duct pipeline and the like on the wall surfaces of the box body and the box cover part, thereby meeting the lubricating requirements of the parts such as the gearbox bearing and the like.
As shown in fig. 1, which is a top view of a splash lubrication system, it can be known that a fixed-shaft two-gear transmission splash lubrication system for an electric vehicle includes a case 2 and a case cover 1; the box body 2 and the box cover 1 are both of hollow semi-shell structures which are vertically arranged; the opening ends of the box body 2 and the box cover 1 are butted to form a closed cavity; the bottom of the cavity is filled with external lubricating liquid;
as shown in fig. 2, which is a schematic diagram of the internal structure of the case, it can be seen that the case 2 is provided with a first input through hole 21, a first middle through hole 22 and a first output through hole 23; wherein, the first middle through hole 22 is arranged in the middle of the box body 2; the first input through hole 21 is horizontally arranged at one side of the first middle through hole 22; the first output through hole 23 is horizontally arranged at the other side of the first middle through hole 22; wherein, the first middle through hole 22 is correspondingly butted with an external middle oil stirring gear; the first input through hole 21 is correspondingly butted with an external input oil stirring gear; the first output through hole 23 is correspondingly butted with an external output oil stirring gear; the external input oil mixing gear is in meshed butt joint with the external middle oil mixing gear; the external middle oil mixing gear is in meshing butt joint with the external output oil mixing gear.
A first oil collecting pool 24, a second oil collecting pool 25 and a box body oil guide groove 26 are arranged in the box body 2; the first oil collecting pool 24, the second oil collecting pool 25 and the box body oil guide groove 26 are all arranged on the inner wall of the top part of the box body 2; the first oil sump 24 is arranged at the middle position between the first middle through hole 22 and the first output through hole 23; the second oil sump 25 is arranged at the top position of the first middle through hole 22; the tank oil guide groove 26 is provided at a top position of the first input through hole 21. The included angle between the first oil collecting pool 24 and the axis of the first middle through hole 22 along the vertical direction is 40-60 degrees; the included angle between the second oil collecting pool 25 and the axis of the first middle through hole 22 along the vertical direction is 8-15 degrees; the included angle between the oil guide groove 26 of the box body and the axis of the first input through hole 21 along the vertical direction is 45-60 degrees.
As shown in fig. 3, which is a schematic view of the internal structure of the case cover, it can be seen that a second input through hole 11, a second middle through hole 12 and a second output through hole 13 are formed in the case cover 1 at positions corresponding to the case body 2; the second middle through hole 12 is correspondingly butted with an external middle oil stirring gear; the second input through hole 11 is correspondingly butted with an external input oil stirring gear; the second output through hole 13 is correspondingly butted with an external output oil stirring gear; the external input oil mixing gear is in meshed butt joint with the external middle oil mixing gear; the external middle oil mixing gear is in meshing butt joint with the external output oil mixing gear.
A third oil collecting pool 14 and a box cover oil guide groove 15 are arranged in the box cover 1; the third oil collecting pool 14 and the box cover oil guide groove 15 are both arranged on the inner wall of the top of the box cover 1; wherein, the third oil collecting pool 14 is arranged right above the second output through hole 13; the cover oil guide groove 15 is provided above the second input through hole 11.
As shown in fig. 4, which is a schematic view of a herringbone integral oil guide groove, it can be seen that the tank cover oil guide groove 15 and the tank body oil guide groove 26 are correspondingly disposed; when the box body 2 and the box cover 1 are butted to form a closed cavity, the box cover oil guide groove 15 and the box body oil guide groove 26 are butted to form a herringbone integral oil guide groove; the herringbone integral oil guide groove is downward inclined from the butt joint position of the box body 2 and the box cover 1 to two sides; the inclination angle is 5-10 degrees. The herringbone integral oil guide groove divides oil splashed by an external input oil stirring gear into two ways, and the two ways of oil are respectively guided to bearings on two sides of the input oil stirring gear. And because the herringbone slot plates are respectively inclined to the bearings at two sides by 5-10 degrees, the flow speed of oil in the slot is improved, and the lubricating flow is increased.
The lubricating process of the splash lubrication system is as follows:
the external input oil stirring gear is immersed in external lubricating liquid; the external input oil mixing gear rotates clockwise relative to the box body 2 to drive the external middle oil mixing gear to rotate anticlockwise and drive the external output oil mixing gear to rotate clockwise; lubricating oil attached to the tooth surface of the gear splashes tangentially along the rotating direction due to the centrifugal action, most of the oil splashes to an oil collecting tank arranged in the circumferential direction of the gear and the wall of an accessory box when the lubricating oil is blocked by a vertical wall 31 and guided downwards by a bottom plate 32, and the oil collecting tank can collect the oil splashed into or flowing into along the wall of the box; the oil guide pipe is arranged at the bottom of the oil collecting pool and leads to a bearing to be lubricated, and the oil collected by the oil collecting pool can be guided to the bearing; meanwhile, the lubricating system is also provided with a herringbone oil guide groove which inclines towards the bearing directions at two sides near the external input oil stirring gear which is offset from the oil stirring gear and is far away from the bearing,
the herringbone integral oil guide groove formed by the box cover oil guide groove 15 and the box body oil guide groove 26 realizes the collection of lubricating liquid sputtered by an externally input oil stirring gear; the first oil collecting pool 24 and the second oil collecting pool 25 are used for collecting lubricating liquid sputtered by the external middle oil stirring gear; the third oil collecting pool 14 collects the lubricating liquid sputtered by the externally output oil stirring gear.
Oil guide pipes are arranged on two sides of the herringbone integral oil guide groove formed by the box cover oil guide groove 15 and the box body oil guide groove 26; the lubricating liquid collected by the herringbone integral oil guide groove is guided into a bearing of an external input oil stirring gear to realize lubrication; oil guide pipes are arranged at the bottoms of the first oil collecting pool 24 and the second oil collecting pool 25, so that lubricating liquid collected by the first oil collecting pool 24 and the second oil collecting pool 25 is guided to a bearing of an external middle oil stirring gear to realize lubrication; an oil guide pipe is arranged at the bottom of the third oil collecting pool 14, so that the lubricating liquid collected by the third oil collecting pool 14 is guided into a bearing of an external output oil stirring gear to realize lubrication. The sump floor 32 is inclined toward the inlet of the oil conduit to accelerate the flow of oil and increase the flow of lubrication. The wall plate of the oil collecting pool close to the gear is designed into an arc concentric with the gear, and the gap between the bottom plate 32 and the addendum circle of the gear is 5-8 mm; the outer arc section of the bottom plate 32 close to the addendum circle of the gear adopts a post-casting milling process to avoid the interference of the wall bottom plate 32 with the gear due to hypertrophy.
As shown in fig. 5, the oil sumps are schematic, and it can be seen that the first oil sump 24, the second oil sump 25 and the third oil sump 14 are all scoop-shaped structures; the oil collecting pool comprises a vertical wall 31, a bottom plate 32, a baffle wall 33 and a side wall 34; wherein, the vertical wall 31 is a vertically placed plate-shaped structure; the top end of the vertical wall 31 is fixedly connected with the inner wall of the top end of the box body 2 or the box cover 1; one end of the upper surface of the bottom plate 32 is fixedly connected with the bottom end of the vertical wall 31; a blocking wall 33 is vertically fixed at an opposite end of the upper surface of the bottom plate 32; the side wall 34 is fixedly arranged between the vertical wall 31 and the blocking wall 33; and the side walls 34 effect a seal against the sides of the bottom panel 32. The bottom plate 32 is fixedly connected with the vertical wall 31 in an upward inclined mode; the bottom plate 32 is angled from the horizontal by 5-10. The oil collecting pool is arranged in the circumferential direction of the oil stirring gear and at a position higher than the bearing roller to be lubricated.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (3)
1. The utility model provides an electric automobile fixed shaft type two-gear gearbox lubricating system that splashes which characterized in that: comprises a box body (2) and a box cover (1); the box body (2) and the box cover (1) are both hollow semi-shell structures which are vertically arranged; the box body (2) is butted with the opening end of the box cover (1) to form a closed cavity; the bottom of the cavity is filled with external lubricating liquid; a first input through hole (21), a first middle through hole (22) and a first output through hole (23) are formed in the box body (2); wherein, the first middle through hole (22) is arranged in the middle of the box body (2); the first input through hole (21) is horizontally arranged at one side of the first middle through hole (22); the first output through hole (23) is horizontally arranged at the other side of the first middle through hole (22); the first middle through hole (22) is correspondingly butted with an external middle oil stirring gear; the first input through hole (21) is correspondingly butted with an external input oil stirring gear; the first output through hole (23) is correspondingly butted with an external output oil stirring gear; the external input oil mixing gear is in meshed butt joint with the external middle oil mixing gear; the external intermediate oil mixing gear is in meshing butt joint with the external output oil mixing gear;
a first oil collecting pool (24), a second oil collecting pool (25) and a box body oil guide groove (26) are arranged in the box body (2); the first oil collecting pool (24), the second oil collecting pool (25) and the box body oil guide groove (26) are all arranged on the inner wall of the top of the box body (2); the first oil collecting pool (24) is arranged in the middle position between the first middle through hole (22) and the first output through hole (23); the second oil collecting pool (25) is arranged at the top position of the first middle through hole (22); the box body oil guide groove (26) is arranged at the top of the first input through hole (21);
an included angle between the first oil collecting pool (24) and the axis of the first middle through hole (22) along the vertical direction is 40-60 degrees; the included angle between the second oil collecting pool (25) and the axis of the first middle through hole (22) along the vertical direction is 8-15 degrees; the included angle between the oil guide groove (26) of the box body and the axis of the first input through hole (21) along the vertical direction is 45-60 degrees;
a second input through hole (11), a second middle through hole (12) and a second output through hole (13) are formed in the box cover (1) and the box body (2) in corresponding positions; the second middle through hole (12) is correspondingly butted with an external middle oil stirring gear; the second input through hole (11) is correspondingly butted with an external input oil stirring gear; the second output through hole (13) is correspondingly butted with an external output oil stirring gear; the external input oil mixing gear is in meshed butt joint with the external middle oil mixing gear; the external intermediate oil mixing gear is in meshing butt joint with the external output oil mixing gear;
a third oil collecting pool (14) and a box cover oil guide groove (15) are arranged in the box cover (1); the third oil collecting pool (14) and the box cover oil guide groove (15) are both arranged on the inner wall of the top of the box cover (1); the third oil collecting pool (14) is arranged right above the second output through hole (13); the box cover oil guide groove (15) is arranged above the second input through hole (11);
the box cover oil guide groove (15) and the box body oil guide groove (26) are correspondingly arranged; when the box body (2) and the box cover (1) are butted to form a closed cavity, the box cover oil guide groove (15) and the box body oil guide groove (26) are butted to form a herringbone integral oil guide groove; the herringbone integral oil guide groove is downwards inclined from the butt joint position of the box body (2) and the box cover (1) to two sides; the inclination angle is 5-10 degrees;
the lubricating process of the splash lubrication system comprises the following steps:
the external input oil stirring gear is immersed in external lubricating liquid; the external input oil mixing gear rotates clockwise relative to the box body (2) to drive the external middle oil mixing gear to rotate anticlockwise and drive the external output oil mixing gear to rotate clockwise; the box cover oil guide groove (15) and the box body oil guide groove (26) form a herringbone integral oil guide groove for collecting lubricating liquid sputtered by an externally input oil stirring gear; the first oil collecting pool (24) and the second oil collecting pool (25) are used for collecting lubricating liquid sputtered by the external middle oil stirring gear; the third oil collecting pool (14) collects the lubricating liquid sputtered by the externally output oil stirring gear;
oil guide pipes are arranged on two sides of a herringbone integral oil guide groove formed by the box cover oil guide groove (15) and the box body oil guide groove (26); the lubricating liquid collected by the herringbone integral oil guide groove is guided into a bearing of an external input oil stirring gear to realize lubrication; oil guide pipes are arranged at the bottoms of the first oil collecting pool (24) and the second oil collecting pool (25) to guide the lubricating liquid collected by the first oil collecting pool (24) and the second oil collecting pool (25) to the bearing of the external middle oil stirring gear to realize lubrication; an oil guide pipe is arranged at the bottom of the third oil collecting pool (14), so that the lubricating liquid collected by the third oil collecting pool (14) is guided into a bearing of an external output oil stirring gear to realize lubrication.
2. The splash lubrication system for the fixed-shaft two-gear gearbox of the electric automobile according to claim 1, characterized in that: the first oil collecting pool (24), the second oil collecting pool (25) and the third oil collecting pool (14) are all spoon-shaped structures; the oil collecting pool comprises a vertical wall (31), a bottom plate (32), a baffle wall (33) and a side wall (34); wherein the vertical wall (31) is a vertically placed plate-shaped structure; the top end of the vertical wall (31) is fixedly connected with the inner wall of the top end of the box body (2) or the box cover (1); one end of the upper surface of the bottom plate (32) is fixedly connected with the bottom end of the vertical wall (31); the retaining wall (33) is vertically fixed at the opposite end of the upper surface of the bottom plate (32); the side wall (34) is fixedly arranged between the vertical wall (31) and the blocking wall (33); and the side wall (34) realizes the sealing of the side surface of the bottom plate (32).
3. The splash lubrication system for the fixed-shaft two-gear gearbox of the electric automobile according to claim 2, characterized in that: the bottom plate (32) is fixedly connected with the vertical wall (31) in an upward inclined angle; the included angle between the bottom plate (32) and the horizontal direction is 5-10 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280767.9A CN109185439B (en) | 2018-10-30 | 2018-10-30 | Electric automobile fixed shaft type two-gear gearbox splash lubrication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280767.9A CN109185439B (en) | 2018-10-30 | 2018-10-30 | Electric automobile fixed shaft type two-gear gearbox splash lubrication system |
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| Publication Number | Publication Date |
|---|---|
| CN109185439A CN109185439A (en) | 2019-01-11 |
| CN109185439B true CN109185439B (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811280767.9A Active CN109185439B (en) | 2018-10-30 | 2018-10-30 | Electric automobile fixed shaft type two-gear gearbox splash lubrication system |
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| CN114135654A (en) * | 2021-11-25 | 2022-03-04 | 智新科技股份有限公司 | Lubricating oil directional distribution device and speed reducer |
| CN114321342B (en) * | 2021-11-30 | 2023-12-05 | 江苏汇智高端工程机械创新中心有限公司 | Driving axle lubricating structure |
| CN114370494B (en) * | 2022-01-17 | 2024-05-31 | 上海电气集团股份有限公司 | Automobile reduction gearbox and automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008014406A (en) * | 2006-07-06 | 2008-01-24 | Jatco Ltd | Automatic transmission |
| CN101413578B (en) * | 2008-11-04 | 2010-12-08 | 常州市瑞泰工程机械有限公司 | Combined lubrication gear box |
| CN203082191U (en) * | 2013-02-28 | 2013-07-24 | 上海中科深江电动车辆有限公司 | Lubricating system for speed changing box of electric automobile |
| CN203670721U (en) * | 2013-11-29 | 2014-06-25 | 北京南口轨道交通机械有限责任公司 | Gear case body |
| CN204099560U (en) * | 2014-08-12 | 2015-01-14 | 宿州市祁南工贸有限责任公司 | A kind of spiral bevel gear cylinder gear speed reducer cooling and lubricating system |
| CN204114080U (en) * | 2014-08-29 | 2015-01-21 | 上海振华重工(集团)股份有限公司 | Retarder and slow speed turbine stage bearing-lubricating device thereof |
| CN107882962A (en) * | 2016-09-28 | 2018-04-06 | 中车北京南口机械有限公司 | The casing of the gear-box of rail traffic vehicles |
| CN207278842U (en) * | 2017-09-01 | 2018-04-27 | 郑州机械研究所有限公司 | Lightweight gear housing with lubricating oil auto oil-collecting distribution function |
| CN207470751U (en) * | 2017-10-30 | 2018-06-08 | 宁波上中下自动变速器有限公司 | Lubrication assembly, retarder and automobile |
| CN107701708A (en) * | 2017-11-17 | 2018-02-16 | 金陵科技学院 | A kind of speed changer precisely application lubricating oil supplementary structure |
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