Automobile main speed reducer shell structure

Abstract

The utility model provides an automobile main speed reducer shell structure which comprises a first shell body and a second shell body which are communicated with each other, the first shell body is provided with an oil storage groove, lubricating oil is stored in the oil storage groove, the second shell body is provided with a pair of first limiting parts, and the first limiting parts are used for limiting tapered roller bearings. A second limiting part is further arranged in the second shell, the second limiting part is arranged between the first limiting parts, a stirring part is arranged in the second limiting part, the second limiting part and the oil storage tank are communicated with each other, and the stirring part is used for stirring lubricating oil in the second limiting part. According to the utility model, the stirring piece is arranged in the second shell, and the oil storage tank is communicated with the second limiting part, so that the stirring piece stirs the lubricating oil in the second limiting part to form splashed oil, and the splashed lubricating oil fully lubricates the tapered roller bearing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile main reducer, specifically, relate to a kind of automobile main reducer shell structure. BACKGROUND

[0002] Main reducer shell is mainly used to install and fix main reducer gear set (including driving bevel gear and driven bevel gear), differential assembly and related bearing, bear power transmission, support and protect internal component function. The main lubrication mode in main reducer shell is splash lubrication, i.e. through the rotation of gear or bearing, oil is brought up and splashed to the components around. The bearing of driving bevel gear shaft usually adopts two tapered roller bearings (face to face or back to back configuration), since the position of two tapered roller bearings in reducer shell is different, one is close to gear meshing area, and the other is away from oil splash range, the bearing away from oil source can not be covered by oil, and tapered roller bearing and driving bevel gear adopt interference fit, in the case of more close, it can also cause oil passage of tapered roller bearing to be blocked, so that the other bearing also can not be lubricated enough, thus an automobile main reducer shell structure is proposed. SUMMARY

[0003] (I) technical problem to be solved

[0004] To solve the above problems, the utility model provides a kind of automobile main reducer shell structure, splash lubrication structure is arranged in the second shell body, so that the tapered roller bearing away from oil is lubricated enough.

[0005] (II) technical scheme

[0006] A kind of automobile main reducer shell structure, including the first shell body and the second shell body of intercommunication, the first shell body is used to install main reducer gear set and differential assembly, the second shell body is used to install driving bevel gear shaft, the first shell body is equipped with oil storage groove, oil storage groove stores lubricating oil, the second shell body is equipped with a pair of first limiting portion, first limiting portion is used for limiting tapered roller bearing in first limiting portion;Second limiting portion is also provided in the second shell body, and second limiting portion is arranged between first limiting portion, and second limiting portion is used for setting stirring member in second limiting portion, second limiting portion and oil storage groove are mutually communicated, and stirring member is used to stir lubricating oil in second limiting portion, and tapered roller bearing is lubricated by splash lubricating oil.

[0007] Further, oil guide opening is provided between oil storage groove and second shell body, and guide oil channel is provided between oil guide opening and second limiting portion, so that lubricating oil enters second limiting portion.

[0008] Further, second limiting portion adopts annular groove.

[0009] Further, the second shell is internally provided with a guide surface, the guide surface comprises a first end portion and a second end portion, the first end portion is towards the second limiting portion, the second end portion is towards the first limiting portion, and the first end portion to the second end portion is arc-shaped transition.

[0010] Further, the second limiting portion is provided with an oil bleeding hole, the oil bleeding hole is used for confirming the position of the lubricating oil.

[0011] Further, the stirring piece adopts stirring blades, and the stirring blades are fixedly connected with the driving bevel gear shaft.

[0012] Further, the oil injection pipeline is arranged on the outer periphery of the first shell, the oil injection pipeline is communicated with the oil storage groove, and the lubricating oil is injected into the oil storage groove from the oil injection pipeline.

[0013] Further, the negative pressure pump comprises an inlet and an outlet, the inlet is communicated with the oil storage groove, the outlet is communicated with the oil guide hole, and when the liquid level of the lubricating oil in the oil storage groove is lower than the oil guide hole, the lubricating oil in the oil storage groove flows into the second shell.

[0014] Further, the first limiting portion adopts a limiting groove, and the tapered roller bearing is in interference fit in the limiting groove.

[0015] Further, the connecting portion is provided with a second semicircular opening, the first semicircular opening and the second semicircular opening are butted, and the mounting hole of the differential bearing is formed.

[0016] (Three) beneficial effects

[0017] The utility model provides a kind of automobile main reducer shell structure, by the oil storage groove of first shell and the conduction of second shell, the stirring piece in second shell carries out splash lubrication to the tapered roller bearing far from oil source, targeted improvement is carried out for the uneven lubrication of local, and reasonable utilization existing condition, the oil storage groove in first shell and second limiting portion are interconnected, so that the gear and bearing in first shell and second shell are simultaneously lubricated, with good practicality. DETAILED DESCRIPTION

[0018] Figure 1 It is the top view of the utility model;

[0019] Figure 2 It is Figure 1 The sectional view of a-a (not set up connecting portion state);

[0020] Figure 3 It is Figure 1 The sectional view of b-b (set up connecting portion state);

[0021] Figure 4 It is Figure 1 The sectional view of c-c;

[0022] Figure 5 for Figure 2 sectional view at d-d;

[0023] Figure 6 for Figure 2 sectional view at e-e.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1, first housing; 11, oil storage tank; 111, oil guide; 12, first semicircular opening; 13, pump housing; 14, oil injection pipeline; 2, second housing; 21, first limiting part; 22, second limiting part; 221, oil outlet; 23, stirring blade; 24, guide surface; 241, first end part; 242, second end part; 3, connecting part; 31, second semicircular opening; 4, bolt; 5, mounting hole. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.

[0027] Referring to Figures 1 to 6 A shell structure of automobile main reducer includes first housing 1 and second housing 2 that communicate with each other, first housing 1 is used to install main reducer gear set and differential assembly, second housing 2 is used to install driving bevel gear shaft, first housing 1 is equipped with oil storage tank 11, second housing 2 is equipped with a pair of first limiting part 21, first limiting part 21 is used to limit conical roller bearing in it;Second housing 2 is also equipped with second limiting part 22, second housing 2 is equipped with oil guide 111 between first limiting part 21, oil guide 111 and oil storage tank 11 are communicated, oil guide 111 to second limiting part 22 is equipped with guide oil channel, so that lubricating oil is guided into second limiting part 22, second limiting part 22 is arranged between two first limiting parts 21, second limiting part 22 is used to set stirring member, when lubricating oil is filled to the height higher than the height of oil guide 111, lubricating oil in oil storage tank 11 is injected into second housing 2, stirring member is used to stir lubricating oil, and two conical roller bearings can be lubricated by splashing lubricating oil.The utility model solves the problem of insufficient lubrication of conical roller bearing far away from oil source by the setting of oil storage tank 11 and stirring member, and the second limiting part 22 and oil storage tank 11 are mutually penetrated by using existing conditions, without additionally setting oil injection member, reducing the stacking of structure, achieving lightweight design, and having good practicability.

[0028] The first limiting part 21 adopts a limiting groove, and the second limiting part 22 adopts an annular groove. The limiting groove and the annular groove are through in the middle, a guide surface 24 is arranged between the limiting groove and the annular groove, the guide surface 24 comprises a first end portion 241 and a second end portion 242, the first end portion 241 is towards the second limiting part 22, the second end portion 242 is towards the first limiting part 21, the diameter of the first end portion 241 is greater than the diameter of the second end portion 242, and the first end portion 241 and the second end portion 242 are arc-shaped transition, when the tapered roller bearing is in the limiting groove, lubricating oil can enter the inside of the tapered roller bearing under the guidance of the guide surface 24.

[0029] The second limiting part 22 is provided with a first end face (the first end face is coplanar with the first end portion 241 of the guide surface 24), and the second limiting part 22 is provided with an oil vent 221, the oil vent 221 is opened and closed through a rubber plug, the position of the oil vent 221 is 2-3 cm away from the first end face, the oil vent 221 is close to the side of the tapered roller bearing which is prone to lubrication deficiency, and the user can confirm that the lubricating oil enters the second limiting part 22 and that the liquid level of the lubricating oil can stir sufficient lubricating oil drops by flowing out of the oil vent 221.

[0030] The stirring part adopts a stirring blade 23, the stirring blade 23 is fixedly connected with the driving bevel gear shaft, so that the stirring blade 23 and the driving bevel gear shaft move synchronously, and the lubricating oil is splashed to the tapered roller bearing far away from the first shell 1.

[0031] The utility model also includes oil injection pipeline 14, oil injection pipeline 14 annularly surround the periphery of first shell 1, oil injection pipeline 14 communicates oil storage tank 11, and lubricating oil is injected into oil storage tank 11 from oil injection pipeline 14, and this structure makes lubricating oil flow along the periphery of first shell 1 while passing through oil injection pipeline, and has the effect of heat dissipation and cooling.

[0032] The utility model also includes negative pressure pump, and the pump shell 13 of negative pressure pump is separately arranged at one side of first shell 1 in this embodiment, impeller is arranged in pump shell 13, the impeller is connected with the output end of rotary motor, the inlet of negative pressure pump communicates oil storage tank 11, and the outlet communicates oil guide hole 111, and the setting of negative pressure pump can be used for the case that the liquid level of lubricating oil in oil storage tank 11 is lower than oil guide hole 111, at this time, the lubricating oil in oil storage tank 11 can flow to the second shell 2 under the action of negative pressure. In addition, the utility model can also use the existing structure driving bevel gear shaft as rotary motor output end, the driving bevel gear shaft is connected with the impeller, and the effect of negative pressure suction is realized.

[0033] The utility model also includes connecting portion 3, first shell 1 is equipped with first semicircular opening 12, connecting portion 3 is equipped with second semicircular opening 31, when installing, differential bearing is placed in first semicircular opening 12 first, then second semicircular opening 31 and first semicircular opening 12 are abutted and docked, are connected through bolt 4, make differential bearing fixed in mounting hole 5.

[0034] Although the present disclosure discloses as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present disclosure.

Claims

1. An automobile main reducer housing structure comprising a first housing (1) and a second housing (2) which are communicated with each other, the first housing (1) being used for mounting a main reducer gear set and a differential assembly, the second housing (2) being used for mounting a driving bevel pinion shaft, characterized in that: The first shell (1) is provided with an oil storage groove (11) for storing lubricating oil, and the second shell (2) is provided with a pair of first limiting portions (21) for limiting the tapered roller bearings.

2. The housing structure for a main speed reducer of an automobile according to claim 1, wherein: The oil storage groove (11) and the second shell (2) are provided with an oil guide opening (111), and the oil guide opening (111) is provided with a guide oil channel between the second limiting portion (22), so that the lubricating oil enters the second limiting portion (22).

3. The housing structure for a main speed reducer of an automobile according to claim 1, wherein: The second limiting portion (22) adopts an annular groove.

4. The housing structure for a main speed reducer of an automobile according to claim 1, characterized in that: The second shell (2) is provided with a guide surface (24) including a first end portion (241) and a second end portion (242), the first end portion (241) faces the second limiting portion (22), and the second end portion (242) faces the first limiting portion (21), and the first end portion (241) and the second end portion (242) are arc-shaped.

5. The automotive final drive housing structure of claim 1, wherein: The second limiting portion (22) is provided with an oil outlet (221) for confirming the position of the lubricating oil.

6. The automotive main reducer housing structure according to claim 1, characterized by: The stirring piece adopts a stirring blade (23), and the stirring blade (23) is fixedly connected with the driving bevel gear shaft.

7. The automotive final drive housing structure of claim 1, wherein: Further comprising an oil injection pipeline (14) arranged on the outer periphery of the first shell (1), the oil injection pipeline (14) communicates with the oil storage groove (11), and the lubricating oil is injected into the oil storage groove (11) from the oil injection pipeline (14).

8. The automotive main reducer housing structure according to claim 2, characterized by: Further comprising a negative pressure pump including an inlet and an outlet, the inlet communicates with the oil storage groove (11), and the outlet communicates with the oil guide opening (111), so that when the liquid level of the lubricating oil in the oil storage groove (11) is lower than the oil guide opening (111), the lubricating oil in the oil storage groove (11) flows into the second shell (2).

9. The automotive main reducer housing structure according to claim 1, characterized by: The first limiting portion (21) adopts a limiting groove, and the tapered roller bearing is interference fit in the limiting groove.

10. The automotive main reducer housing structure according to claim 1, characterized by: Further comprising a connecting portion (3), the first shell (1) is provided with a first semicircular opening (12), the connecting portion (3) is provided with a second semicircular opening (31), the first semicircular opening (12) and the second semicircular opening (31) are butted to form a mounting hole (5) of the differential bearing.

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