Automobile rear axle structure with high pressure resistance

Abstract

The utility model belongs to the technical field of automobile rear axles, and particularly relates to a high-pressure-resistance automobile rear axle structure which comprises a rear axle body, a shaft sleeve arranged on one side of the rear axle body, a limiting groove formed in the shaft sleeve, an upper axle housing arranged at the top of the shaft sleeve, a first bolt hole formed in the upper axle housing, a fixing hole formed in the upper axle housing and a lower axle housing arranged at the bottom of the shaft sleeve. A limiting pin is arranged in the lower axle housing, and a second bolt hole is formed in the lower axle housing. The left protective shell, the right protective shell, the fixing bolts and the fixing holes are used in cooperation, the left protective shell and the right protective shell can be conveniently connected and installed, the overall structural strength of the protective shell can be improved, the wear-resisting and corrosion-resisting performance of the protective shell can be improved by arranging the wear-resisting layer on the outer wall of the protective shell, and the service life of the protective shell is prolonged. And meanwhile, the anti-extrusion layer and the reinforcing ribs are arranged in the anti-extrusion structure to be used in cooperation, the internal structural strength of the anti-extrusion structure can be improved, and therefore the anti-extrusion performance of the whole structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile rear axles, in particular to an automobile rear axle structure with strong pressure resistance. Background Art

[0002] The rear axle of a car refers to the bridge at the back of the car. If it is a front-axle driven vehicle, the rear axle is just a follower axle and only serves to carry the load. Generally, there is a transfer case in front of the rear axle. The rear axle also includes a drive shaft, transmission gears, etc. The rear of a multi-axle truck is also divided into a driven rear axle and a non-driven rear axle. The non-driven rear axle is the part that has no drive shaft connection and does not belong to the drive wheel. It is generally only found in heavy trucks with more than 3 axles and tractor heads.

[0003] The prior art has the following deficiencies: The prior art is disclosed as CN202221800821.X, which is a pressure-resistant automobile rear axle structure, comprising an upper bridge shell and a lower bridge shell, wherein the upper bridge shell and the lower bridge shell are welded to form a rear axle, wherein the middle parts of the upper bridge shell and the lower bridge shell form a accommodating cavity, and annular connecting frames are welded on both sides of the middle parts of the upper bridge shell and the lower bridge shell; a front cover is welded on the outer surface of one of the annular connecting frames, and both sides of the front cover are connected to U-shaped reinforcement seats through connecting pieces, and the U-shaped reinforcement seats are welded to the surfaces of the upper bridge shell and the lower bridge shell; a rear cover is welded on the outer surface of the other annular connecting frame, and both sides of the rear cover are connected to triangular reinforcement members through connecting pieces, and the triangular reinforcement members are welded to the surfaces of the upper bridge shell and the lower bridge shell.

[0004] The above-mentioned rear axle structure design is relatively simple, the support and protection mechanism for the drive connecting shaft is relatively simple, the support compressive strength is relatively weak, and it is easy to be damaged by a strong force, affecting the safe working and use effect. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a rear axle structure of an automobile with strong pressure resistance to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rear axle structure of an automobile with strong pressure resistance, comprising a rear axle body, a shaft sleeve is provided on one side of the rear axle body, a limiting groove is provided on the shaft sleeve, an upper bridge shell is provided on the top of the shaft sleeve, a first bolt hole is provided on the upper bridge shell, a fixing hole is provided on the upper bridge shell, a lower bridge shell is provided on the bottom of the shaft sleeve, a limiting pin is provided inside the lower bridge shell, a second bolt hole is provided on the lower bridge shell, and a protective shell is provided outside the upper bridge shell.

[0007] As a preferred technical solution of the utility model, a plurality of limit grooves are provided, and the limit grooves are evenly and symmetrically distributed on the upper and lower sides of the shaft sleeve.

[0008] As a preferred technical solution of the utility model, the upper bridge housing and the lower bridge housing have the same size and structure, and the inner diameters of the upper bridge housing and the lower bridge housing are matched with the outer diameter of the shaft sleeve.

[0009] As a preferred technical solution of the utility model, a plurality of the first bolt holes and a plurality of the second bolt holes are provided, and the sizes and positions of the first bolt holes and the second bolt holes correspond to each other.

[0010] As a preferred technical solution of the utility model, a plurality of limit pins are provided, the outer diameter of the limit pins is matched with the inner diameter of the limit slot, and the limit pins are movably plugged into the limit slot.

[0011] As an optimal technical solution of the utility model, the protective shell includes a left protective shell, a right protective shell, fixing bolts, a wear-resistant layer, an anti-extrusion layer and reinforcing ribs. The left protective shell is arranged on one side of the upper bridge shell, and the right protective shell is arranged on the other side of the upper bridge shell. A fixing bolt is arranged on the top of the left protective shell, a wear-resistant layer is arranged on the upper surface of the left protective shell, an anti-extrusion layer is arranged on one side of the wear-resistant layer, and reinforcing ribs are arranged inside the anti-extrusion layer. The left protective shell has the same structural dimensions as the right protective shell, and the fixing bolts are fixedly connected to the fixing holes.

[0012] As a preferred technical solution of the utility model, the wear-resistant layer is made of chromium carbide material, and the reinforcing ribs are made of carbon steel material.

[0013] Compared with the prior art, the utility model provides a rear axle structure of an automobile with strong pressure resistance, which has the following beneficial effects:

[0014] The automobile rear axle structure with strong pressure resistance can facilitate protective connection of the shaft sleeve and improve the connection and installation stability by arranging an upper bridge shell, a lower bridge shell, a limit groove, a limit pin, a first bolt hole and a second bolt hole for coordinated use. A left protective shell, a right protective shell, fixing bolts and fixing holes are arranged for coordinated use, which can facilitate the connection and installation of the left protective shell and the right protective shell and improve the overall structural strength. A wear-resistant layer is arranged on the outer wall of the protective shell to improve its wear resistance and corrosion resistance to prevent it from being easily damaged by external forces. An anti-extrusion layer and reinforcing ribs are arranged inside it for coordinated use to improve its internal structural strength, thereby improving the compression resistance of the overall structure and preventing it from being easily deformed and damaged by external forces, which is convenient for better long-term working use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the protective cover of the utility model;

[0017] Figure 3 This is a schematic diagram of the front structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the left protective cover of the utility model.

[0019] In the figure: 1. rear axle body; 2. bushing; 3. limit groove; 4. upper bridge shell; 5. first bolt hole; 6. fixing hole; 7. lower bridge shell; 8. limit pin; 9. second bolt hole; 10. protective shell; 1001. left protective shell; 1002. right protective shell; 1003. fixing bolt; 1004. wear-resistant layer; 1005. anti-extrusion layer; 1006. reinforcing rib. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 In this embodiment: a rear axle structure of an automobile with strong pressure resistance includes a rear axle body 1, a shaft sleeve 2 is arranged on one side of the rear axle body 1, a limiting groove 3 is arranged on the shaft sleeve 2, an upper bridge shell 4 is arranged on the top of the shaft sleeve 2, a first bolt hole 5 is arranged on the upper bridge shell 4, a fixing hole 6 is arranged on the upper bridge shell 4, a lower bridge shell 7 is arranged on the bottom of the shaft sleeve 2, a limiting pin 8 is arranged inside the lower bridge shell 7, a second bolt hole 9 is arranged on the lower bridge shell 7, and a protective shell 10 is arranged outside the upper bridge shell 4.

[0022] In this embodiment, a plurality of limit grooves 3 are provided, and the limit grooves 3 are evenly and symmetrically distributed on the upper and lower sides of the sleeve 2, which is convenient for connecting the limit pins 8 and improving the stability of the connection and installation; the upper bridge shell 4 and the lower bridge shell 7 have the same size and structure, and the inner diameter size of the upper bridge shell 4 and the lower bridge shell 7 is adapted to the outer diameter size of the sleeve 2, which is convenient for protecting them and can improve their structural strength; a plurality of first bolt holes 5 and second bolt holes 9 are provided, and the size and position of the first bolt holes 5 and the second bolt holes 9 correspond to each other, which is convenient for connection and installation and convenient for work and use; a plurality of limit pins 8 are provided, and the outer diameter size of the limit pin 8 is adapted to the inner diameter size of the limit groove 3, and the limit pin 8 is movably plugged into the limit groove 3, which is convenient for limiting connection and improving the stability of connection and installation; the protective shell 10 includes a left protective shell 1001, a right protective shell 1002, and a fixing bolt 100 3. Wear-resistant layer 1004, anti-extrusion layer 1005 and reinforcing rib 1006. The left protective shell 1001 is arranged on one side of the upper bridge shell 4, and the right protective shell 1002 is arranged on the other side of the upper bridge shell 4. A fixing bolt 1003 is arranged on the top of the left protective shell 1001, and a wear-resistant layer 1004 is arranged on the upper surface of the left protective shell 1001. An anti-extrusion layer 1005 is arranged on one side of the wear-resistant layer 1004, and reinforcing rib 1006 is arranged inside the anti-extrusion layer 1005. The left protective shell 1001 has the same structural dimensions as the right protective shell 1002, and the fixing bolt 1003 is fixedly connected to the fixing hole 6 to facilitate improving its structural strength and prevent it from being easily damaged; the wear-resistant layer 1004 is made of chromium carbide material, and the reinforcing rib 1006 is made of carbon steel material, which can improve the structural strength of the protective shell 10, thereby facilitating improving the overall structural strength.

[0023] The working principle and use process of the utility model are as follows: the operator can dock and install the upper bridge shell 4 and the lower bridge shell 7 with the shaft sleeve 2, so that the limit pins 8 inside the upper bridge shell 4 and the lower bridge shell 7 can be inserted and limited with the upper limit groove 3 on the shaft sleeve 2, thereby improving the connection stability; the upper bridge shell 4 and the lower bridge shell 7 can be connected and installed by inserting the bolts into the first bolt hole 5 and the second bolt hole 9, thereby improving the structural strength and the protection effect of the shaft sleeve 2; the left protective shell 1001 and the right protective shell 1002 are docked and installed with the outside of the upper bridge shell 4 and the lower bridge shell 7, and the fixing bolts 1003 are connected to the fixing holes 6 to facilitate their fixed installation and improve the installation and use stability, thereby further improving the structural strength of the overall structure and preventing it from being easily damaged by external forces.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rear axle structure of an automobile with strong pressure resistance, comprising a rear axle body (1), wherein a shaft sleeve (2) is provided on one side of the rear axle body (1), and characterized in that: The shaft sleeve (2) is provided with a limiting groove (3), the top of the shaft sleeve (2) is provided with an upper bridge housing (4), the upper bridge housing (4) is provided with a first bolt hole (5), the upper bridge housing (4) is provided with a fixing hole (6), the bottom of the shaft sleeve (2) is provided with a lower bridge housing (7), a limiting pin (8) is provided inside the lower bridge housing (7), the lower bridge housing (7) is provided with a second bolt hole (9), and the upper bridge housing (4) is provided with a protective shell (10) outside.

2. The automobile rear axle structure with strong pressure resistance according to claim 1, characterized in that: A plurality of the limiting grooves (3) are provided, and the limiting grooves (3) are evenly and symmetrically distributed on the upper and lower sides of the shaft sleeve (2).

3. The automobile rear axle structure with strong pressure resistance according to claim 1, characterized in that: The upper bridge housing (4) and the lower bridge housing (7) have the same size and structure, and the inner diameters of the upper bridge housing (4) and the lower bridge housing (7) are compatible with the outer diameter of the shaft sleeve (2).

4. The automobile rear axle structure with strong pressure resistance according to claim 1, characterized in that: A plurality of the first bolt holes (5) and the second bolt holes (9) are provided, and the first bolt holes (5) and the second bolt holes (9) correspond in size and position.

5. The automobile rear axle structure with strong pressure resistance according to claim 1, characterized in that: A plurality of the limit pins (8) are provided, the outer diameter of the limit pins (8) is matched with the inner diameter of the limit slot (3), and the limit pins (8) are movably plugged into the limit slot (3).

6. The automobile rear axle structure with strong pressure resistance according to claim 1, characterized in that: The protective shell (10) comprises a left protective shell (1001), a right protective shell (1002), fixing bolts (1003), a wear-resistant layer (1004), an anti-extrusion layer (1005) and reinforcing ribs (1006); the left protective shell (1001) is arranged on one side of the upper bridge shell (4); the right protective shell (1002) is arranged on the other side of the upper bridge shell (4); a fixing bolt (1003) is arranged on the top of the left protective shell (1001); a wear-resistant layer (1004) is arranged on the upper surface of the left protective shell (1001); an anti-extrusion layer (1005) is arranged on one side of the wear-resistant layer (1004); a reinforcing rib (1006) is arranged inside the anti-extrusion layer (1005); the left protective shell (1001) and the right protective shell (1002) have the same structural dimensions; and the fixing bolts (1003) are fixedly connected to the fixing holes (6).

7. The automobile rear axle structure with strong pressure resistance according to claim 6, characterized in that: The wear-resistant layer (1004) is made of chromium carbide material, and the reinforcing rib (1006) is made of carbon steel material.

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