Water-cooling electric-drive bidirectional-drive speed reducer shell

Abstract

The utility model discloses a water-cooling electric-drive two-way drive speed reducer shell which comprises a left shell body and a right shell body, the left shell body and the right shell body are buckled to form a cavity, and a speed reducer shaft gear set, a middle shaft gear set and an input shaft gear set are installed in the cavity. The axis height of the input shaft gear set is larger than the axis height of the intermediate shaft gear set and the axis height of the speed reducer shaft gear set. A first oil blocking rib plate is arranged on the upper portion of the inner wall of the left shell, a second oil blocking rib plate is arranged on the upper portion of the inner wall of the right shell, and the first oil blocking rib plate and the second oil blocking rib plate are both close to a speed reducer shaft gear set. And the guide rod is used for guiding oil to flow to the speed reducer shaft gear set, the input shaft gear set and the intermediate shaft gear set from the upper part of the cavity. The utility model has the characteristics of compact structure, good lubricating effect, high suitability and the like, and eliminates the defect of relatively poor one-way driving suitability.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a water-cooled electric drive two-way drive reducer housing. Background Art

[0002] At present, most reducers still adopt the gear type. The gear type reducer mainly relies on different transmission ratios of gears to change the speed of the driving wheel. In order to reduce the friction between gears, an oil film needs to be formed between the working surfaces of the gears to relatively separate the working surfaces, thereby improving the working efficiency and service life of the gear mechanism.

[0003] Active lubrication needs to add an additional oil pump as the driving mechanism for the lubricating oil to achieve. Although ideal lubrication effects can be achieved, the following problems are also brought: (1) After adding the oil pump, the kinetic energy loss will be increased, and the overall transmission efficiency of the reducer will be reduced; (2) A large number of gears need to be arranged inside the housing of the reducer, and the space is very compact. After adding the oil pump and the corresponding oil guide plate groove structure, the layout design difficulty of the reducer will be greatly increased, and at the same time, the weight of the reducer will also increase; (3) In order to reduce the energy consumption of the oil pump, active lubrication usually needs to correspond the displacement and working conditions of the oil pump, which requires an additional control system. This not only increases the design difficulty, but also brings relevant reliability risks to the reducer itself due to the responsiveness and reliability of the oil pump.

[0004] Therefore, it is necessary to develop a splash oil structure that can improve the lubrication situation inside the reducer without active lubrication, ensure good splash lubrication in a reducer with a relatively large geometric size, and at the same time ensure a high transmission efficiency of the entire transmission system.

[0005] In addition, with the continuous development of the new energy vehicle industry, more and more vehicle manufacturers are eager for the electric drive to be compatible with the front and rear axle layouts of the whole vehicle at the same time. However, at present, the vast majority of electric drives on the market only meet the one-way drive, which has certain limitations. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a water-cooled electric drive two-way drive reducer housing with a compact structure, good lubrication effect and high adaptability aiming at the disadvantages of relatively poor adaptability of the existing one-way drive.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0008] A water-cooled electric drive two-way drive reducer housing, comprising: a left housing and a right housing, a cavity is formed by fastening between the left housing and the right housing, a reducer shaft gear set, an intermediate shaft gear set and an input shaft gear set are installed in the cavity, and the axial center height of the input shaft gear set is higher than the axial center heights of the intermediate shaft gear set and the reducer shaft gear set; a first oil baffle plate is provided on the upper part of the inner wall of the left housing, a second oil baffle plate is provided on the upper part of the inner wall of the right housing, and both the first oil baffle plate and the second oil baffle plate are close to the reducer shaft gear set for guiding oil to flow from the upper part of the cavity to the reducer shaft gear set, the input shaft gear set and the intermediate shaft gear set.

[0009] As a further improvement of the present invention, the first oil baffle plate is arranged in a "U" - shaped structure between the input shaft gear set, the intermediate shaft gear set and the reducer shaft; the second oil baffle plate is in a - shaped structure, one end of the second oil baffle plate is butted against the reducer shaft gear set, and the other end of the second oil baffle plate is butted against the intermediate shaft gear set.

[0010] As a further improvement of the present invention, a left input bearing installation position for installing the input shaft gear set is provided on the left housing, a third oil guide groove is provided on the side of the left input bearing installation position, and the third oil guide groove is butted against the side of the first oil baffle plate; a window is provided above the side of the first oil baffle plate; the oil thrown out by the reducer shaft gear set is drained by the first oil baffle plate and flows through the window into the third oil guide groove to achieve lubrication of the input shaft gear set.

[0011] As a further improvement of the present invention, a left intermediate bearing installation position for installing the intermediate shaft gear set is provided on the left housing, a second oil guide groove is provided on the top of the left intermediate bearing installation position, and the second oil guide groove is butted against the bottom of the first oil baffle plate; the oil thrown out by the reducer shaft gear set is drained to the second oil guide groove through the bottom of the first oil baffle plate to achieve lubrication of the intermediate shaft gear set.

[0012] As a further improvement of the present invention, an oil sump and a left differential bearing installation position for installing the reducer shaft gear set are provided on the left housing, the oil sump is located on the top of the left differential bearing installation position, and the left differential bearing installation position and the left input bearing installation position are respectively located on opposite sides of the first oil baffle plate; the oil thrown out by the reducer shaft gear set is drained to the oil sump through the side of the first oil baffle plate to achieve continuous lubrication of the reducer shaft gear set.

[0013] As a further improvement of the present utility model, a first oil guiding groove is provided on the left housing. The first oil guiding groove communicates with the left differential bearing installation position, and the first oil guiding groove is located at the side of the oil collecting groove. The oil discharged by the reducer shaft gear set is drained through the side of the first oil retaining rib plate, flows across the oil collecting groove and then into the first oil guiding groove, so as to realize continuous lubrication of the reducer shaft gear set.

[0014] As a further improvement of the present utility model, a right input bearing installation position for installing the input shaft gear set is provided on the right housing. A fourth oil guiding groove is provided at the side of the right input bearing installation position, and one end of the fourth oil guiding groove is butted against the second oil retaining rib plate; the oil discharged by the reducer shaft gear set is drained into the fourth oil guiding groove through the second oil retaining rib plate, so as to realize lubrication of the input shaft gear set.

[0015] As a further improvement of the present utility model, a right differential bearing installation position for installing the reducer shaft gear set is provided on the right housing. A ninth oil guiding groove is provided at the side of the right differential bearing installation position, and the other end of the ninth oil guiding groove is butted against the second oil retaining rib plate; the oil discharged by the reducer shaft gear set is drained into the ninth oil guiding groove through the second oil retaining rib plate, so as to realize continuous lubrication of the reducer shaft gear set.

[0016] As a further improvement of the present utility model, a fifth oil guiding groove is further provided at the side of the right differential bearing installation position. The oil discharged by the reducer shaft gear set returns to the right differential bearing installation position through the ninth oil guiding groove, so as to realize continuous lubrication of the reducer shaft gear set.

[0017] As a further improvement of the present utility model, a right intermediate bearing installation position for installing the intermediate shaft gear set is provided on the right housing. A sixth oil guiding groove and a seventh oil guiding groove are respectively provided on both sides of the right intermediate bearing installation position. The seventh oil guiding groove is butted against the right input bearing installation position, and the oil in the right input bearing installation position enters the right intermediate bearing installation position through the seventh oil guiding groove; the oil discharged by the reducer shaft gear set returns to the right input bearing installation position through the sixth oil guiding groove, so as to realize lubrication of the intermediate shaft gear set.

[0018] Compared with the prior art, the advantages of the present utility model are as follows:

[0019] The water-cooled electric drive two-way drive reducer housing of the present utility model realizes electric drive two-way drive through the reducer shaft gear set, the intermediate shaft gear set and the input shaft gear set. By arranging a first oil baffle plate and a second oil baffle plate near the reducer shaft gear set, the oil discharged by the reducer shaft gear set is redirected from the upper part of the cavity to the reducer shaft gear set, the input shaft gear set and the intermediate shaft gear set, increasing the contact area between the oil and the reducer housing, which is beneficial to the heat dissipation of the housing surface, and realizing passive lubrication of the reducer shaft gear set, the input shaft gear set and the intermediate shaft gear set. On the basis of passive lubrication, the electric drive can simultaneously meet the two-way drive, meet the requirements of the front and rear axle layout of the whole vehicle, and save components such as electronic oil pumps and oil coolers, greatly saving the cost of the electric drive and reducing the development difficulty of the electric drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural principle diagram of the water-cooled electric drive two-way drive reducer housing in a specific embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural principle diagram of the left side of the reducer when the electric drive rotates forward in a specific embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural principle diagram of the lubricating oil path of the left housing of the reducer when the electric drive rotates forward in a specific embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural principle diagram of the right side of the reducer when the electric drive rotates forward in a specific embodiment of the present utility model;

[0024] Figure 5 It is a schematic structural principle diagram of the lubricating oil path of the right housing of the reducer when the electric drive rotates forward in a specific embodiment of the present utility model;

[0025] Figure 6 It is a schematic structural principle diagram of the left side of the reducer when the electric drive rotates reversely in a specific embodiment of the present utility model;

[0026] Figure 7 It is a schematic structural principle diagram of the lubricating oil path of the left housing of the reducer when the electric drive rotates reversely in a specific embodiment of the present utility model;

[0027] Figure 8 It is a schematic structural principle diagram of the right side of the reducer when the electric drive rotates reversely in a specific embodiment of the present utility model;

[0028] Figure 9 It is a schematic structural principle diagram of the lubricating oil path of the right housing of the reducer when the electric drive rotates reversely in a specific embodiment of the present utility model;

[0029] Legend Explanation: 1. Left housing; 2. Left input bearing; 201. Left input bearing mounting position; 3. Input shaft; 4. Right input bearing; 41. Right input bearing mounting position; 5. Left intermediate bearing; 51. Left intermediate bearing mounting position; 6. Intermediate shaft; 7. Right intermediate bearing; 71. Right intermediate bearing mounting position; 8. Left output bearing; 9. Reducer; 91. Left differential bearing mounting position; 92. Right differential bearing mounting position; 10. Main reduction gear ring; 11. Right output bearing; 12. Right housing; 13. First oil guiding groove; 14. Oil collecting groove; 15. First oil retaining rib plate; 16. Window; 17. Third oil guiding groove; 18. Second oil guiding groove; 19. Fourth oil guiding groove; 20. Second oil retaining rib plate; 21. Fifth oil guiding groove; 22. Sixth oil guiding groove; 23. Seventh oil guiding groove; 24. Eighth oil guiding groove; 25. Ninth oil guiding groove. Detailed Implementation Manner

[0030] The present utility model will be further described below in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but the protection scope of the present utility model is not limited thereby.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "side part", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0033] Embodiment

[0034] As Figures 1 to 9As shown in the figure, the water-cooled electric drive two-way drive reducer housing of the present utility model includes a left housing 1 and a right housing 12. A cavity is formed by buckling between the left housing 1 and the right housing 12. A reducer shaft gear set, an intermediate shaft gear set, and an input shaft gear set are installed in the cavity. The axial center height of the input shaft gear set is higher than the axial center heights of the intermediate shaft gear set and the reducer shaft gear set, and the axial center of the intermediate shaft gear set is located above the axial center of the reducer shaft gear set. The upper part of the inner wall of the left housing 1 is provided with a first oil baffle plate 15, and the upper part of the inner wall of the right housing 12 is provided with a second oil baffle plate 20. Both the first oil baffle plate 15 and the second oil baffle plate 20 are close to the reducer shaft gear set to guide the oil discharged by the reducer shaft gear set to flow from the upper part of the cavity to the reducer shaft gear set, the input shaft gear set, and the intermediate shaft gear set.

[0035] As Figure 1 shown in the figure, in this embodiment, the reducer shaft gear set includes a left output bearing 8, a reducer 9, a main reduction large gear ring 10, and a right output bearing 11. The reducer 9 is nested on the output shaft (not shown in the figure), the main reduction large gear ring 10 is nested outside the reducer 9, and the left output bearing 8 and the right output bearing 11 are respectively nested on both sides of the output shaft. The input shaft gear set includes a left input bearing 2, an input shaft 3, and a right input bearing 4. The input shaft 3 is integrally formed with the input shaft large gear ring. The intermediate shaft gear set includes a left intermediate bearing 5, an intermediate shaft 6, and a right intermediate bearing 7. The intermediate shaft 6 is integrally formed with the intermediate shaft large gear ring. The main reduction large gear ring 10 meshes with the intermediate shaft 6, and the intermediate shaft large gear ring meshes with the input shaft 3 to achieve electric drive two-way drive transmission. By setting the first oil baffle plate 15 and the second oil baffle plate 20, it is avoided that the oil is directly driven by the main reduction large gear ring 10 to flow to the intermediate shaft 6 and accumulate. After the oil splashes above the housing, it is guided to the bearing installation position of the input shaft 3 through the first oil baffle plate 15 and the second oil baffle plate 20 to lubricate the left input bearing 2 and the right input bearing 4.

[0036] In this embodiment, by arranging the first oil baffle plate 15 and the second oil baffle plate 20 near the reducer shaft gear set, the oil discharged by the main reduction large gear ring 10 is redirected from the upper part of the cavity to the reducer shaft gear set, the input shaft gear set, and the intermediate shaft gear set by the first oil baffle plate 15 and the second oil baffle plate 20. This increases the contact area between the oil and the reducer housing, which is beneficial to the heat dissipation of the housing surface, and realizes the passive lubrication of the reducer shaft gear set, the input shaft gear set, and the intermediate shaft gear set. On the basis of passive lubrication, the electric drive can simultaneously meet the two-way drive, meet the requirements of the front and rear axle layout of the whole vehicle, and save components such as an electronic oil pump and an oil cooler, greatly saving the cost of the electric drive and reducing the development difficulty of the electric drive.

[0037] As Figure 3 shown in the figure, the first oil baffle plate 15 is arranged in an approximate "U" shape structure between the input shaft gear set, the intermediate shaft gear set, and the reducer shaft gear to conduct oil diversion; AsFigure 5 As shown, the second oil baffle 20 is approximately in the shape of a character structure. One end of the second oil baffle 20 is docked with the reducer shaft gear set, and the other end of the second oil baffle 20 is docked with the intermediate shaft gear set to conduct oil flow.

[0038] As Figure 3 and Figure 7 shown, on the left housing 1, there is a left input bearing mounting position 201 for mounting the left input bearing 2. A third oil guide groove 17 is provided on the side of the left input bearing mounting position 201, and the third oil guide groove 17 is docked with the side of the first oil baffle 15. Correspondingly, a window 16 is provided above the side of the first oil baffle 15. The oil discharged by the main reduction gear ring 10 is drained by the first oil baffle 15 and flows through the window 16 into the third oil guide groove 17 to achieve lubrication of the input shaft gear set. As Figure 3 shown, in order to better achieve oil flow, a protrusion is provided at the end of the first oil baffle 15 close to the window 16 to conduct the oil flowing out of the window 16 to ensure that the oil enters the third oil guide groove 17 more smoothly.

[0039] As Figure 3 shown, on the left housing 1, there is a left intermediate bearing mounting position 51 for mounting the left intermediate bearing 5. A second oil guide groove 18 is provided at the top of the left intermediate bearing mounting position 51, and the second oil guide groove 18 is docked with the bottom of the first oil baffle 15. The oil discharged by the main reduction gear ring 10 is drained to the second oil guide groove 18 through the bottom of the first oil baffle 15 to achieve lubrication of the intermediate shaft gear set.

[0040] As Figure 3 shown, on the left housing 1, there is an oil sump 14 and a left differential bearing mounting position 91 for mounting the reducer shaft gear set. The oil sump 14 is located at the top of the left differential bearing mounting position 91. The left differential bearing mounting position 91 and the left input bearing mounting position 201 are respectively located on opposite sides of the first oil baffle 15. The oil discharged by the main reduction gear ring 10 is drained to the oil sump 14 through the side of the first oil baffle 15 to achieve continuous lubrication of the reducer shaft gear set.

[0041] Furthermore, a first oil guide groove 13 is provided on the left housing 1. The first oil guide groove 13 is communicated with the left differential bearing mounting position 91, and the first oil guide groove 13 is located on the side of the oil sump 14. The oil discharged by the reducer shaft gear set is drained through the side of the first oil baffle 15, crosses the oil sump 14 and then flows into the first oil guide groove 13 to achieve continuous lubrication of the reducer shaft gear set.

[0042] As Figure 5 and Figure 9As shown, the right housing 12 is provided with a right input bearing mounting position 41 for mounting the right input bearing 4, and a fourth oil guide groove 19 is provided on the side of the right input bearing mounting position 41, and the fourth oil guide groove 19 is butted with one end of the second oil baffle rib 20. The oil thrown out of the main reduction gear ring 10 is drained into the fourth oil guide groove 19 through the second oil baffle rib 20 to achieve lubrication of the input shaft gear set.

[0043] like Figure 5 and Figure 9 As shown, the right housing 12 is provided with a right differential bearing mounting position 92 for mounting the reducer shaft gear set, and a ninth oil guide groove 25 is provided on the side of the right differential bearing mounting position 92, and the ninth oil guide groove 25 is butted with the other end of the second oil baffle rib 20. The oil thrown out of the reducer shaft gear set flows through the second oil baffle rib 20 to the ninth oil guide groove 25 to achieve continuous lubrication of the reducer shaft gear set.

[0044] Furthermore, a fifth oil guide groove 21 is provided on the side of the right differential bearing installation position 92, and the oil thrown out by the main reduction gear ring 10 returns to the right differential bearing installation position 92 through the ninth oil guide groove 25 to achieve continuous lubrication of the reducer shaft gear set.

[0045] like Figure 5 and Figure 9 As shown, the right housing 12 is provided with a right intermediate bearing installation position 71 for installing the right intermediate bearing 7, and the right intermediate bearing installation position 71 is provided with a sixth oil guide groove 22 and a seventh oil guide groove 23 on both sides thereof. The seventh oil guide groove 23 is connected to the right input bearing installation position 41, and the oil in the right input bearing installation position 41 enters the right intermediate bearing installation position 71 through the seventh oil guide groove 23. The oil thrown out by the main reduction gear ring 10 returns to the right input bearing installation position 41 through the sixth oil guide groove 22 to achieve lubrication of the intermediate shaft gear set.

[0046] In this embodiment, Figure 2 As shown in FIG. 1 , when the electric drive rotates forward in the direction indicated by the arrow, the lubricating oil is thrown out through the main reduction gear ring 10 on the left housing 1 side. Figure 3 As shown by the middle arrow, part of the lubricating oil is blocked by the first oil baffle 15 above the inner wall of the left housing 1, falls back to the second oil guide groove 18, and is guided to the left intermediate bearing mounting position 51 on the left housing 1 to lubricate the left intermediate bearing 5; part of the oil slides to the third oil guide groove 17 through the window 16, enters the left input bearing mounting position 201, and lubricates the left input bearing 2; another part of the lubricating oil splashes to the top of the left housing 1 and falls into the upper oil collecting groove 14, and then flows from the oil collecting port of the oil collecting groove 14 to the reducer 9 to lubricate the reducer 9; another part of the lubricating oil slides across the oil collecting groove 14 in the direction of the arrow to the first oil guide groove 13, flows to the left differential bearing mounting position, and lubricates the bearing of the reducer 9.

[0047] like Figure 4As shown, when the electric drive rotates forward in the direction indicated by the arrow, on the right housing 12 side, part of the lubricating oil is thrown off by the main reduction large gear ring 10, as Figure 5 shown by the arrow in it. Part of the lubricating oil slides into the fifth oil guiding groove 21 and flows to the right differential bearing mounting position 92 to lubricate the bearings of the reducer 9. Part of the lubricating oil is thrown off by the intermediate shaft large gear ring. Under the diversion of the second oil baffle plate 20, it slides along the arrow direction into the fourth oil guiding groove 19 and flows to the right input bearing mounting position 41 to lubricate the right input bearing 4. And the oil flows into the right intermediate bearing mounting position 71 through the seventh oil guiding groove 23 to lubricate the right intermediate bearing 7. Part of the lubricating oil is blocked back by the second oil baffle plate 20 and flows into the sixth oil guiding groove 22 to enter the right intermediate bearing mounting position 71 to lubricate the right intermediate shaft bearing 7.

[0048] As Figure 6 shown, when the electric drive rotates reversely in the direction indicated by the arrow, on the left housing 1 side, as Figure 7 shown by the arrow in it, the lubricating oil is thrown off by the main reduction large gear ring 10. Part of the oil splashes above the left housing 1 and falls into the upper oil collecting groove 14, and then flows to the reducer 9 along the oil guiding direction of the oil collecting port of the oil collecting groove 14 to lubricate the reducer 9. Part of the oil flows into the third oil guiding groove 17 along the arrow direction and enters the left input bearing mounting position 201 to lubricate the left input bearing 2. Part of the oil flows into the eighth oil guiding groove 24 along the arrow direction and enters the left differential bearing mounting position 91 to lubricate the bearings of the reducer 9. Part of the oil flows into the second oil guiding groove 18 along the arrow direction and enters the left intermediate bearing mounting position 51 to lubricate the left intermediate bearing 5.

[0049] As Figure 8 shown, when the electric drive rotates reversely in the direction indicated by the arrow, on the right housing 12 side, as Figure 9 shown by the arrow in it, part of the lubricating oil is thrown off by the main reduction large gear ring 10 and slides along the arrow direction into the ninth oil guiding groove 25 and flows to the right differential bearing mounting position 92 to lubricate the bearings of the reducer 9. Part of the lubricating oil slides along the arrow direction into the fourth oil guiding groove 19, enters the right input bearing mounting position 41 to lubricate the right input bearing 4, and then flows into the right intermediate bearing mounting position 71 through the seventh oil guiding groove 23 to lubricate the right intermediate bearing 7.

[0050] Through the housing structure of this embodiment, the forward and reverse rotation conditions of the electric drive are realized, meeting the market demand for the electric drive to meet the front and rear axle arrangements of the whole vehicle at the same time, improving the diversification adaptation ability of the electric drive, and reducing the manufacturing cost of the whole vehicle.

[0051] The above is only the preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A water-cooled electric drive two-way drive reducer housing, characterized in that, Including: A left housing (1) and a right housing (12), a cavity is formed by fastening between the left housing (1) and the right housing (12), a speed reducer shaft gear set, an intermediate shaft gear set and an input shaft gear set are installed in the cavity, and the axial center height of the input shaft gear set is higher than the axial center heights of the intermediate shaft gear set and the speed reducer shaft gear set; a first oil baffle plate (15) is provided on the upper part of the inner wall of the left housing (1), a second oil baffle plate (20) is provided on the upper part of the inner wall of the right housing (12), and both the first oil baffle plate (15) and the second oil baffle plate (20) are close to the speed reducer shaft gear set for guiding oil to flow from the upper part of the cavity to the speed reducer shaft gear set, the input shaft gear set and the intermediate shaft gear set.

2. The water-cooled electric drive two-way drive reducer housing according to claim 1, characterized in that, The first oil baffle plate (15) is arranged in a "U" - shaped structure between the input shaft gear set, the intermediate shaft gear set and the reducer shaft gear; the second oil baffle plate (20) is in the shape of a structure, one end of the second oil baffle plate (20) is butted with the reducer shaft gear set, and the other end of the second oil baffle plate (20) is butted with the intermediate shaft gear set.

3. The water-cooled electric drive two-way drive reducer housing according to claim 2, wherein, A left input bearing mounting position (201) for mounting the input shaft gear set is provided on the left housing (1), a third oil guiding groove (17) is provided on the side of the left input bearing mounting position (201), and the third oil guiding groove (17) is butted against the side of the first oil baffle plate (15); a window (16) is provided above the side of the first oil baffle plate (15); the oil thrown out by the speed reducer shaft gear set is drained by the first oil baffle plate (15) and flows through the window (16) into the third oil guiding groove (17) to achieve lubrication of the input shaft gear set.

4. The water-cooled electric drive two-way drive reducer housing according to claim 3, characterized in that, A left intermediate bearing mounting position (51) for mounting the intermediate shaft gear set is provided on the left housing (1), a second oil guiding groove (18) is provided on the top of the left intermediate bearing mounting position (51), and the second oil guiding groove (18) is butted against the bottom of the first oil baffle plate (15); the oil thrown out by the speed reducer shaft gear set is drained to the second oil guiding groove (18) through the bottom of the first oil baffle plate (15) to achieve lubrication of the intermediate shaft gear set.

5. The water-cooled electric drive two-way drive reducer housing according to claim 4, characterized in that An oil collecting groove (14) and a left differential bearing mounting position (91) for mounting the speed reducer shaft gear set are provided on the left housing (1), the oil collecting groove (14) is located at the top of the left differential bearing mounting position (91), and the left differential bearing mounting position (91) and the left input bearing mounting position (201) are respectively located on opposite sides of the first oil baffle plate (15); the oil thrown out by the speed reducer shaft gear set is drained to the oil collecting groove (14) through the side of the first oil baffle plate (15) to achieve continuous lubrication of the speed reducer shaft gear set.

6. The water-cooled electric drive two-way drive reducer housing according to claim 5, characterized in that, A first oil guiding groove (13) is provided on the left housing (1), the first oil guiding groove (13) is communicated with the left differential bearing mounting position (91), and the first oil guiding groove (13) is located on the side of the oil collecting groove (14). The oil thrown out by the speed reducer shaft gear set is drained through the side of the first oil baffle plate (15), crosses the oil collecting groove (14) and then flows into the first oil guiding groove (13) to achieve continuous lubrication of the speed reducer shaft gear set.

7. The water-cooled electric drive two-way drive reducer housing according to any one of claims 1 to 6, characterized in that, The right housing (12) is provided with a right input bearing mounting position (41) for mounting the input shaft gear set. A fourth oil guide groove (19) is provided on the side of the right input bearing mounting position (41), and one end of the fourth oil guide groove (19) is butted against the second oil baffle plate (20); the oil discharged by the reducer shaft gear set is drained to the fourth oil guide groove (19) through the second oil baffle plate (20) to achieve lubrication of the input shaft gear set.

8. The water-cooled electric drive two-way drive reducer housing according to claim 7, characterized in that, The right housing (12) is provided with a right differential bearing mounting position (92) for mounting the reducer shaft gear set. A ninth oil guide groove (25) is provided on the side of the right differential bearing mounting position (92), and the other end of the ninth oil guide groove (25) is butted against the second oil baffle plate (20); the oil discharged by the reducer shaft gear set is drained to the ninth oil guide groove (25) through the second oil baffle plate (20) to achieve continuous lubrication of the reducer shaft gear set.

9. The water-cooled electric drive two-way drive reducer housing according to claim 8, characterized in that, A fifth oil guide groove (21) is further provided on the side of the right differential bearing mounting position (92). The oil discharged by the reducer shaft gear set returns to the right differential bearing mounting position (92) through the ninth oil guide groove (25) to achieve continuous lubrication of the reducer shaft gear set.

10. The water-cooled electric drive two-way drive reducer housing according to claim 8, characterized in that, The right housing (12) is provided with a right intermediate bearing mounting position (71) for mounting the intermediate shaft gear set. A sixth oil guide groove (22) and a seventh oil guide groove (23) are respectively provided on both sides of the right intermediate bearing mounting position (71). The seventh oil guide groove (23) is butted against the right input bearing mounting position (41), and the oil in the right input bearing mounting position (41) enters the right intermediate bearing mounting position (71) through the seventh oil guide groove (23); the oil discharged by the reducer shaft gear set returns to the right input bearing mounting position (41) through the sixth oil guide groove (22) to achieve lubrication of the intermediate shaft gear set.

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