CN211684521U - Asymmetric cross-section integral casting axle housing - Google Patents

Abstract

The utility model belongs to the technical field of the car, specific integral casting axle housing of asymmetric cross-section that says so. The axle housing comprises an axle housing body, a shaft head, an axle housing rear cover, a brake flange, a suspension upper cover plate and a suspension lower supporting plate. The height of the square sections on the two sides of the axle housing body is integrally moved downwards, and meanwhile, transition fillets between the axle packet in the middle of the axle housing and the square sections on the two sides are reduced, so that the mounting height of a suspension connecting piece and a frame is reduced, the height of a whole vehicle saddle is further reduced, and the mounting height of a vehicle is improved; through realizing the whole casting of axle housing with spindle nose, axle housing rear cover, braking flange, suspension upper cover plate, suspension bottom plate integration on the axle housing body for the axle housing assembly integrates the degree height, has solved the easy oil leak of traditional syllogic casting axle housing rear cover, the big problem of weight that the half shaft sleeve pipe depth of insertion overlength leads to.

Description

Asymmetric cross-section integral casting axle housing

Technical Field

The utility model belongs to the technical field of the car, specific integral casting axle housing of asymmetric cross-section that says so.

Background

The drive axle is located at the tail end of the automobile transmission system and is connected with the frame through an elastic suspension. In the prior art, a drive axle housing is generally of an upper and lower symmetrical structure, and the structure limits the installation height of a suspension connecting piece and a frame, so that the height of a chassis is influenced; at present, the passing height of the tractor is limited by laws and regulations, and the height of a chassis is urgently required to be reduced for increasing the cargo volume of the tractor, so that the loading height of the tractor is increased.

Disclosure of Invention

The utility model provides a simple structure's integral casting axle housing of asymmetric cross-section, this structure with axle housing body both sides side cross-section wholly move down, reduce the transition fillet of axle housing middle part bridge package and both sides side cross-section, guarantee simultaneously that bridge package center height and both sides wheel center height are unchangeable to reduced suspension connecting piece and frame height, and then reduced whole car saddle height, promote the vehicle facial make-up height, solved the above-mentioned problem that prior art exists.

The technical scheme of the utility model is explained as follows with the attached drawings:

an asymmetric cross-section integral type casting axle housing comprises an axle housing body 1, an axle head 2, an axle housing rear cover 3, a brake flange 4, a suspension upper cover plate 5 and a suspension lower supporting plate 6; the axle head 2, the axle housing rear cover 3, the brake flange 4, the suspension upper cover plate 5 and the suspension lower support plate 6 are integrated on the axle housing body 1; the distance H1 from the upper plane 1-1 of the axle housing body 1 to the center line 1-2 of the axle housing body 1 is 1/4 of the height H of the square section 7; transition round corners 8 of the bridge package in the middle of the axle housing body 1 and the square sections 7 on the two sides are 120 mm; the clearance H3 between the axle housing body 1 and the half shaft 16 is 5 mm.

And the upper part of the square section 7 of the axle housing body 1 is provided with a bulge 9.

The axle housing body 1 is provided with an external lightening hole 10 at a transition area close to the inner side of the braking flange 4.

The square section 7 of the axle housing body 1 is of an upper asymmetric structure and a lower asymmetric structure.

A first oil retaining wall 11 and a second oil retaining wall 12 are arranged on the axle housing body 1; the heights of the first oil retaining wall 11 and the second oil retaining wall 12 are both higher than the oil surface line 13; an auxiliary oil storage cavity 14 is formed between the first oil retaining wall 11 and the second oil retaining wall 12; the lower part of the first oil baffle wall 11 is provided with an oil through hole 15.

An oil filling hole 20 is formed in the axle housing rear cover 3; the height of the oil filling hole 20 is flush with the height of the oil surface line 13.

The utility model has the advantages that:

the utility model discloses a highly whole the moving down of square cross-section of 1 both sides of axle housing body, reduced the mounting height of suspension connecting piece, and then reduced whole car saddle height, promote the vehicle facial make-up height. Simultaneously, compare traditional syllogic casting axle housing, the utility model discloses the degree of integrating is high, has solved easy oil leak of bolted connection back lid, half shaft sleeve pipe depth of insertion overlength and the big problem of axle housing assembly weight that leads to.

Drawings

FIG. 1 is a schematic view of an asymmetric cross-section integral cast axle housing of the present invention;

FIG. 2 is a schematic structural view of a conventional cast axle housing;

FIG. 3 is a schematic view of a square cross-sectional structure of the axle housing body of the present invention;

FIG. 4 is a schematic cross-sectional view of the axle housing body of the present invention;

FIG. 5a is a schematic view of a weight-reducing structure of an inner transition region of a conventional brake flange;

fig. 5b is a schematic view of a weight reduction structure of the transition region at the inner side of the brake flange of the present invention;

FIG. 6 is a schematic diagram of the middle section structure of the present invention;

fig. 7 is a schematic view of the middle three-dimensional structure of the present invention.

In the figure: 1. an axle housing body; 1-1, upper plane; 1-2, center line; 1-3, lower plane; 2. a shaft head; 3. an axle housing rear cover; 4. a brake flange; 5. a suspension upper cover plate; 6. a suspension lower support plate; 7. a square cross section; 8. transition fillets; 9. a protrusion; 10. an external lightening hole; 11. a first oil baffle wall; 12. a second oil retaining wall; 13. frying noodles; 14. a secondary oil storage chamber; 15. an oil through hole; 16. a half shaft; 17. a main oil storage chamber; 18. an internal lightening hole; 19. a Chinese lute bag; 20. an oil filling hole.

Detailed Description

Referring to fig. 1, the asymmetric cross-section integral type casting axle housing comprises an axle housing body 1, a shaft head 2, an axle housing rear cover 3, a braking flange 4, a suspension upper cover plate 5 and a suspension lower supporting plate 6. Spindle nose 2, axle housing rear cover 3, braking flange 4, suspension upper cover plate 5, suspension bottom plate 6 all integrate on axle housing body 1, realize the whole casting of axle housing.

Referring to fig. 2, 3 and 4, the axle housing of the conventional drive axle is generally of an upper and lower symmetrical structure, that is, the distance from the upper plane 1-1 of the axle housing body 1 to the center line of the axle housing body 1 is equal to the distance from the lower plane 1-3 of the axle housing body 1 to the center line 1-2 of the axle housing body 1. The height of the square sections 7 on the two sides of the axle housing body 1 integrally moves downwards, and the distance H1 from the upper plane 1-1 of the axle housing body 1 to the center line 1-2 of the axle housing body 1 is only 1/4 of the height H of the square section 7, so that the height of the upper plane 1-1 of the axle housing body 1 is greatly reduced; meanwhile, the radius of the transition round angle 8 between the bridge package in the middle of the axle housing and the square cross sections 7 on the two sides is reduced from 250mm to 120mm, so that the height of a suspension connecting piece and a frame is reduced, and the loading height of a vehicle is improved; a lute-shaped bag 19 is arranged above the transition round angle 8. Meanwhile, in order to ensure the rotation space of the half shaft 16, the clearance between the half shaft 16 and the axle housing body 1 needs to be ensured to be at least 5 mm.

Referring to fig. 3 and 4, a local bulge 9 is designed on the upper part of the square section 7 of the axle housing body 1, so that the rotation space of the half shaft 16 is ensured, and meanwhile, the bulge 9 strengthens the rigidity and the strength of the axle housing body 1.

Referring to fig. 5a and 5b, the weight reduction structure of the axle housing body 1 close to the inner side transition area of the brake flange 4 is changed from the traditional inner weight reduction hole 18 to the outer weight reduction hole 10, so that the problem of poor blank sand removal manufacturability caused by metal removal of the inner cavity is solved.

Referring to fig. 6 and 7, since the square cross section of the axle housing body 1 adopts an upper and lower asymmetric arrangement structure, the lower oil storage cavity becomes large, and in order to reduce the filling amount of the lubricating oil, the utility model is provided with a first oil baffle wall 11 and a second oil baffle wall 12, the heights of the first oil baffle wall 11 and the second oil baffle wall 12 are both higher than the oil surface line 13, so as to prevent the lubricating oil of the drive axle from flowing to the wheel rim; an auxiliary oil storage cavity 14 is formed between the first oil baffle wall 11 and the second oil baffle wall 12, and an oil through hole 15 is formed in the lower portion of the first oil baffle wall 11, so that oil in the main oil storage cavity 17 can be communicated with oil in the auxiliary oil storage cavity 14, the oil is guaranteed to flow back to the main oil storage cavity 17 when the drive axle works, and further, the sufficient lubrication of parts such as gears, bearings and the like in the drive axle is guaranteed; be equipped with tank filler hole 20 on the axle housing rear cover 3, the height of tank filler hole 20 and the high parallel and level of oil level line 13 to make things convenient for the observation and the measurement of oil filling volume.

Claims (6)

1. An integral type cast axle housing with an asymmetric section is characterized by comprising an axle housing body (1), a shaft head (2), an axle housing rear cover (3), a brake flange (4), a suspension upper cover plate (5) and a suspension lower support plate (6); the axle head (2), the axle housing rear cover (3), the brake flange (4), the suspension upper cover plate (5) and the suspension lower support plate (6) are integrated on the axle housing body (1); the distance H1 from the upper plane (1-1) of the axle housing body (1) to the center line (1-2) of the axle housing body (1) is 1/4 of the height H of the square section (7); transition fillets (8) between the bridge package in the middle of the axle housing body (1) and the square sections (7) on the two sides are 120 mm; and the clearance H3 between the axle housing body (1) and the half shaft (16) is 5 mm.

2. An asymmetric-section one-piece cast axle housing as claimed in claim 1 in which the upper portion of the square section (7) of the axle housing body (1) is provided with a boss (9).

3. An asymmetric-section one-piece cast axle housing as claimed in claim 1 in which the transition area of the axle housing body (1) near the inside of the brake flange (4) is provided with external lightening holes (10).

4. An asymmetric-section one-piece cast axle housing as claimed in claim 1 in which the square section (7) of the axle housing body (1) is of upper and lower asymmetric construction.

5. An asymmetric-section integrally cast axle housing as claimed in claim 1, characterized in that said axle housing body (1) is provided with a first oil dam (11) and a second oil dam (12); the heights of the first oil retaining wall (11) and the second oil retaining wall (12) are both higher than the oil surface line (13); an auxiliary oil storage cavity (14) is formed between the first oil retaining wall (11) and the second oil retaining wall (12); the lower part of the first oil baffle wall (11) is provided with an oil through hole (15).

6. An asymmetric-section integrally cast axle housing as claimed in claim 5, characterised in that said axle housing rear cover (3) is provided with an oil filler hole (20); the height of the oil filling hole (20) is flush with the height of the oil surface line (13).

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