A rear axle main reducer housing

Abstract

The utility model discloses a rear axle main speed reducer shell, including the shell body, the outer surface of shell body has integrative casting linear rib, and the surface of linear rib is provided with the circular arc rib that crosses, in the utility model, through integrative casting multiple linear ribs and multiple circular arc ribs on the outer surface of shell body, and multiple linear ribs and multiple circular arc ribs interlace into the reinforcing rib layer of net structure, can promote its pressure -bearing capacity and structural strength on the basis of original rear axle main speed reducer shell smooth surface, simultaneously, through the mounting hole of circular flange plate close to shell body, make the mounting ring set up on the circular flange plate and enter the mounting hole and weld fixedly, again by the reinforcing electrode of mounting ring periphery setting and the periphery welding fixed of mounting hole, compared with traditional direct welding fixed mode, can carry out double welding reinforcement to the installation of circular flange plate, eliminate the risk of leakage because of circular flange plate and main speed reducer shell junction place.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a rear axle main reducer housing. Background Technology

[0002] The rear axle main reducer housing, as the external housing component of the drive axle main reducer, plays an important role in fixing, supporting, and lubricating the main reducer.

[0003] Patent No. CN211649008U discloses a rear axle main reducer housing. Its features include an oil pump hole at the upper end of the housing, a flange face and reinforcing ribs at the lower end of the housing, and bolt mounting holes on the end face of the housing. A retaining ring is installed on the inner side of the large end plane, and two bolt bosses are designed on the inner side of the retaining ring. The housing has two reinforcing ribs, an oil filling hole at the upper end of the bearing hole, and a bearing mounting position at the lower end of the bearing hole. This technical solution, with the oil filling hole in the bearing hole, has a simple structure, is easy to operate, and effectively solves the problem of overheating in the main reducer housing.

[0004] In the above solution, the oil filling hole is designed on the bearing hole, which is simple in structure and easy to operate, and effectively solves the problem of easy overheating of the main reducer housing. However, since the surface of the main reducer housing in this solution is a smooth plane, when the main reducer housing is subjected to external force, it will cause the main reducer housing to dent due to the unsatisfactory pressure bearing effect. Secondly, the circular flange of the main reducer housing is directly welded and fixed. Since no reinforcement structure is set, there is a risk of leakage at the connection between the circular flange and the main reducer housing, which affects the reliability of the main reducer housing.

[0005] To address this issue, a rear axle main reducer housing is proposed, which has the advantages of good pressure resistance and prevention of flange weld leakage, thereby solving the problems mentioned in the background technology. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a rear axle main reducer housing.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a rear axle main reducer housing, comprising a housing body, wherein straight ribs are integrally cast on the outer surface of the housing body, and arc ribs are intersected on the surface of the straight ribs; a flange edge is welded at the edge of the housing body, and a mounting hole is provided on the top surface of the housing body; a circular flange is provided around the mounting hole, and the side of the circular flange facing the mounting hole is welded to the housing body through a mounting ring; a reinforcing rib is welded to the outer ring of the mounting ring, and the reinforcing rib is welded to the outer wall of the housing body; and a bearing mounting position is provided on the inner wall of the housing body.

[0008] As a further description of the above technical solution: multiple flange holes are provided on both the flange edge and the surface of the circular flange, and a clearance arc is provided at the edge of the circular flange corresponding to the flange holes of the circular flange.

[0009] As a further description of the above technical solution: the outer ring of the mounting ring is provided with a plurality of reinforcing welding rods, and the plurality of reinforcing welding rods are arranged around the center of the mounting ring.

[0010] As a further description of the above technical solution: the outer surface of the outer shell body is integrally formed with multiple straight ribs and multiple arc ribs, and the multiple straight ribs and multiple arc ribs are interwoven to form a reinforcing rib layer.

[0011] As a further description of the above technical solution: there are two bearing mounting positions, and the two bearing mounting positions are distributed on both sides inside the outer casing.

[0012] As a further description of the above technical solution: multiple clearance arcs are provided at the edge of the circular flange.

[0013] This utility model has the following beneficial effects: In this invention, multiple straight ribs and multiple arc ribs are integrally cast onto the outer surface of the housing body, and these ribs interweave to form a mesh-like reinforcing rib layer. This enhances the load-bearing capacity and structural strength of the original smooth surface of the rear axle main reducer housing. Furthermore, by placing the circular flange close to the mounting hole of the housing body, the mounting ring on the circular flange is inserted into the mounting hole and welded in place. The reinforcing welding rod around the mounting ring is then welded to the periphery of the mounting hole. Compared to the traditional direct welding method, this double welding reinforcement of the circular flange installation eliminates the risk of leakage at the connection between the circular flange and the main reducer housing. Attached Figure Description

[0014] Figure 1 This is a top view of the housing of a rear axle main reducer according to the present invention; Figure 2 This is a bottom view of the housing of a rear axle main reducer according to the present invention; Figure 3 This is a schematic diagram of the circular flange structure of the rear axle main reducer housing according to this utility model.

[0015] Legend: 1. Outer shell body; 2. Flange edge; 3. Circular flange; 4. Straight rib; 5. Arc rib; 6. Relief arc; 7. Mounting hole; 8. Bearing mounting position; 9. Mounting ring; 10. Reinforcing welding rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] According to an embodiment of the present invention, a rear axle main reducer housing is provided.

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-3 As shown, a rear axle main reducer housing according to an embodiment of the present invention includes a housing body 1. Straight ribs 4 are integrally cast on the outer surface of the housing body 1, and arc ribs 5 are intersected on the surface of the straight ribs 4. A flange edge 2 is welded to the edge of the housing body 1, and a mounting hole 7 is provided on the top surface of the housing body 1. A circular flange 3 is provided around the mounting hole 7, and the side of the circular flange 3 facing the mounting hole 7 is welded to the housing body 1 via a mounting ring 9. Reinforcing ribs are welded to the outer ring of the mounting ring 9, and the reinforcing ribs are welded to the outer wall of the housing body 1. A bearing mounting position 8 is provided on the inner wall of the housing body 1. By bringing the circular flange 3 close to the housing body 1... The mounting hole 7 causes the mounting ring 9 on the circular flange 3 to extend into the mounting hole 7 and be welded and fixed. Then, the reinforcing welding rod 10 on the periphery of the mounting ring 9 is welded and fixed to the periphery of the mounting hole 7. Compared with the traditional direct welding and fixing method, the installation of the circular flange 3 can be double-welded and reinforced, eliminating the risk of leakage at the connection between the circular flange 3 and the main reducer housing. At the same time, by integrally casting multiple straight ribs 4 and multiple arc ribs 5 on the outer surface of the housing body 1, and the multiple straight ribs 4 and multiple arc ribs 5 intertwine to form a mesh structure of reinforcing rib layer, the pressure bearing capacity and structural strength can be improved on the basis of the original smooth surface of the rear axle main reducer housing. In one embodiment, multiple flange holes are provided on the surfaces of the flange edge 2 and the circular flange 3. A clearance arc 6 is provided at the edge of the circular flange 3 corresponding to the flange holes of the circular flange 3. The flange holes of the flange edge 2 and the circular flange 3 facilitate the installation of the outer shell body 1.

[0019] In one embodiment, the outer ring of the mounting ring 9 is provided with a plurality of reinforcing welding rods 10, and the plurality of reinforcing welding rods 10 are arranged around the center of the mounting ring 9, so that secondary welding reinforcement can be performed on the basis of the original welding.

[0020] In one embodiment, the outer surface of the outer shell body 1 is integrally formed with a plurality of straight ribs 4 and a plurality of arc ribs 5, and the plurality of straight ribs 4 and the plurality of arc ribs 5 interweave to form a reinforcing rib layer. The reinforcing rib layer formed by the plurality of straight ribs 4 and the plurality of arc ribs 5 can improve the pressure-bearing performance of the outer shell body 1.

[0021] In one embodiment, there are two bearing mounting positions 8, which are distributed on both sides inside the housing body 1. The bearing mounting positions 8 facilitate the installation of the rear axle main reducer components of the vehicle.

[0022] In one embodiment, a plurality of clearance arcs 6 are provided at the edge of the circular flange 3. The plurality of clearance arcs 6 can make way for the overlapping part of the flange hole between the circular flange 3 and the flange edge 2, which is beneficial for the installation of the outer shell body 1.

[0023] Working principle: In use, by bringing the circular flange 3 close to the mounting hole 7 of the housing body 1, the mounting ring 9 on the circular flange 3 is inserted into the mounting hole 7 and welded to it. Then, the reinforcing welding rod 10 on the periphery of the mounting ring 9 is welded to the periphery of the mounting hole 7. Compared with the traditional direct welding method, the installation of the circular flange 3 can be double-welded and reinforced, eliminating the risk of leakage at the connection between the circular flange 3 and the main reducer housing. At the same time, by integrally casting multiple straight ribs 4 and multiple arc ribs 5 on the outer surface of the housing body 1, and the multiple straight ribs 4 and multiple arc ribs 5 intertwined to form a mesh structure of reinforcing rib layer, the pressure-bearing capacity and structural strength of the original smooth surface of the rear axle main reducer housing can be improved.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rear axle main reducer housing, comprising a housing body (1), characterized in that: The outer surface of the outer shell body (1) is integrally cast with straight ribs (4), and the surface of the straight ribs (4) is intersected with arc ribs (5). The edge of the outer shell body (1) is welded with a flange edge (2), and the top surface of the outer shell body (1) is provided with a mounting hole (7). The periphery of the mounting hole (7) is provided with a circular flange (3), and the side of the circular flange (3) facing the mounting hole (7) is welded to the outer shell body (1) through a mounting ring (9). The outer ring of the mounting ring (9) is welded with reinforcing ribs, and the reinforcing ribs are welded to the outer wall of the outer shell body (1). The inner wall surface of the outer shell body (1) is provided with a bearing mounting position (8).

2. The rear axle main reducer housing according to claim 1, characterized in that: Multiple flange holes are provided on the surface of the flange edge (2) and the circular flange (3), and a clearance arc (6) is provided at the edge of the circular flange (3) corresponding to the flange hole of the circular flange (3).

3. The rear axle main reducer housing according to claim 1, characterized in that: The outer ring of the mounting ring (9) is provided with a plurality of reinforcing welding rods (10), and the plurality of reinforcing welding rods (10) are arranged around the center of the mounting ring (9).

4. The rear axle main reducer housing according to claim 1, characterized in that: The outer surface of the outer shell body (1) is integrally formed with multiple straight ribs (4) and multiple arc ribs (5), and the multiple straight ribs (4) and multiple arc ribs (5) are interwoven to form a reinforcing rib layer.

5. The rear axle main reducer housing according to claim 1, characterized in that: There are two bearing mounting positions (8), and the two bearing mounting positions (8) are distributed on both sides inside the outer shell body (1).

6. The rear axle main reducer housing according to claim 2, characterized in that: The circular flange (3) has multiple clearance arcs (6) at its edge.

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