Heavy truck axle housing

Abstract

This utility model belongs to the field of axle housing technology and discloses a heavy-duty truck axle housing, including an axle housing body, a flange connected to the axle housing body, a mounting base, an upper leaf spring seat, and a lower leaf spring seat connected to the axle housing body. The upper leaf spring seat and the lower leaf spring seat are respectively provided with upper mounting holes and lower mounting holes, and are respectively provided with upper leaf spring filling and reinforcing surfaces and lower leaf spring filling and reinforcing surfaces. The upper leaf spring seat is connected to a large arc transition rib, which is connected to the axle housing body. The upper leaf spring seat is also connected to a flange side transition rib, which is connected to the axle housing body. The lower leaf spring seat is connected to a connecting rib, which is connected to the axle housing body. This utility model enhances the overall structural strength of the axle housing, enabling the axle housing to stably bear loads under complex working conditions such as heavy loads and bumps, avoiding the problem of fatigue cracks or even fracture failure at the contact point between the axle housing and the leaf spring seat, and improving the load-bearing capacity and service life of the axle housing.

Description

Technical Field

[0001] This utility model relates to the field of axle housing technology, and in particular to an axle housing for heavy trucks. Background Technology

[0002] As the core load-bearing component of the axle assembly, the axle housing of heavy-duty trucks undertakes critical functions such as vehicle load transfer, suspension support, and power transmission. In actual operation, the contact area between the axle housing and the leaf spring seat is subjected to alternating stress, road impacts, and heavy loads over long periods, making it highly susceptible to fatigue cracks and even fracture failure. This not only affects the normal operation of the vehicle but also poses significant safety hazards. With the logistics and transportation industry's increasing demands for vehicle reliability and uptime, traditional axle housing structures can no longer meet the requirements of high-strength, high-frequency use, necessitating enhanced design to improve their load-bearing capacity and durability. Utility Model Content

[0003] The present invention aims to provide a heavy-duty truck axle housing to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A heavy-duty truck axle housing includes an axle housing body connected to a flange, a mounting base, an upper leaf spring seat, and a lower leaf spring seat. The upper and lower leaf spring seats are respectively provided with an upper mounting hole and a lower mounting hole. The upper and lower leaf spring seats are respectively provided with an upper leaf spring filling and reinforcing surface and a lower leaf spring filling and reinforcing surface. The upper leaf spring seat is connected to a large-arc transition rib, which is connected to the axle housing body. The upper leaf spring seat is also connected to a flange-side transition rib, which is connected to the axle housing body. The lower leaf spring seat is connected to a connecting rib, which is connected to the axle housing body.

[0006] Preferably, the bridge housing body is connected to a reinforcing rib, and the reinforcing rib is connected to the upper leaf spring seat.

[0007] Preferably, the bridge housing body is connected to a second connecting rib, and the two ends of the second connecting rib are respectively connected to the mounting base and the large arc transition rib.

[0008] Preferably, the connection between the large arc transition rib and the bridge shell body adopts a smooth transition design.

[0009] Preferably, the bridge housing body is formed by stamping from a rigid material.

[0010] Preferably, the inner walls of both the upper and lower mounting holes are provided with a thread-locking coating.

[0011] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0012] (1) This technical solution improves the fatigue resistance and wear resistance of the contact area with the leaf spring by setting up a filling and strengthening surface for the upper and lower leaf springs, effectively reducing the risk of fracture. By setting up large arc transition ribs, flange side transition ribs, and connecting ribs, the stress distribution path is optimized, which can reasonably disperse the road impact force and heavy load transmitted to the contact area between the axle housing and the leaf spring seat, significantly reducing stress concentration, enhancing the overall structural strength of the axle housing, and enhancing the fatigue resistance of the structure. This allows the axle housing to still bear load stably under complex working conditions such as heavy load and bumps, avoiding the problem of fatigue cracks or even fracture failure at the contact area between the axle housing and the leaf spring seat, improving the load-bearing capacity and service life of the axle housing, and ensuring the safe and stable operation of the vehicle under complex working conditions.

[0013] (2) By setting reinforcing ribs, the stress borne by the upper leaf spring seat can be effectively distributed to other areas of the axle housing body, changing the stress transmission path and reducing local stress peaks. The reinforcing ribs, together with the axle housing body and the upper leaf spring seat, form a stable triangular support structure, which is like adding a "skeleton" to the axle housing, enhancing its resistance to deformation, thereby preventing cracks or even breakage in the connection area between the axle housing and the upper leaf spring seat, greatly improving the reliability and durability of the heavy truck axle housing under complex working conditions, extending its service life, and reducing the downtime and maintenance time and costs caused by axle housing failure.

[0014] (3) By setting the second connecting rib, a stable triangular stress transmission network can be constructed, which can effectively improve the overall structural strength and fatigue resistance of the axle shell. The second connecting rib enhances the rigidity of the weak areas of the axle shell. Together with the large circular arc transition rib, it can improve the structural stability of the axle shell under extreme working conditions such as heavy load and bumps, reduce the risk of fracture, ensure the safety of vehicle operation, and reduce maintenance costs and downtime.

[0015] (4) By adopting a smooth transition design at the connection between the large circular arc transition rib and the bridge shell body, stress can be uniformly transmitted along a continuous and smooth curved surface, avoiding stress from suddenly accumulating at the connection, reducing the problem of premature material failure caused by stress concentration, enhancing the structural toughness of the connection area between the large circular arc transition rib and the bridge shell body, and enabling the bridge shell to maintain reliable performance under long-term high-intensity use.

[0016] (5) By setting the bridge shell body formed by stamping of rigid material, the bridge shell can be endowed with excellent deformation resistance and load-bearing performance due to the high strength and high hardness of the material itself, and can effectively resist bending, torsional stress and road impact load under heavy load conditions.

[0017] (6) By setting the thread anti-loosening coating, the friction of the thread contact surface can be increased, forming a stable mechanical locking effect, avoiding the failure of the connection between the leaf spring seat and the axle housing body due to bolt loosening, improving the connection reliability, reducing the risk of axle housing failure caused by bolt loosening, ensuring the safe operation of the vehicle under complex road conditions, and reducing maintenance and repair costs and downtime. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention;

[0019] Figure 2 This is a partial top view of the present invention;

[0020] Figure 3 This is a partial bottom view of the present invention;

[0021] Figure reference numerals: 1. Bridge housing body; 2. Flange plate; 3. Flange side transition rib; 4. Upper leaf spring seat; 5. Large arc transition rib; 6. Connecting rib II; 7. Mounting seat; 8. Reinforcing rib; 9. Lower leaf spring seat; 10. Connecting rib I; 11. Upper mounting hole; 12. Upper leaf spring filling and reinforcing surface; 13. Lower mounting hole; 14. Lower leaf spring filling and reinforcing surface. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0023] like Figure 1-3 The diagram shows a heavy-duty truck axle housing, comprising a housing body 1, which is formed by stamping from a rigid material. Flanges 2 are connected to both ends of the housing body 1. A mounting seat 7 is connected to the top center of the housing body 1. Upper leaf spring seats 4 and lower leaf spring seats 9 are connected to the upper and lower sides of the housing body 1 near the flanges 2, respectively. Upper leaf spring seats 4 and lower leaf spring seats 9 are respectively provided with upper mounting holes 11 and lower mounting holes 13, and the inner walls of both upper mounting holes 11 and lower mounting holes 13 are coated with a thread-locking coating. When the heavy-duty truck axle housing is in operation, the vertical load formed by the vehicle's own weight and the weight of the cargo is transmitted to the leaf springs through the frame. The load is then distributed to the housing body 1 by the leaf springs, which are fixed to the upper and lower mounting holes 13 on the upper and lower leaf spring seats 9 by bolts.

[0024] like Figure 1-3As shown, the upper leaf spring seat 4 and the lower leaf spring seat 9 are respectively provided with an upper leaf spring filling reinforcement surface 12 and a lower leaf spring filling reinforcement surface 14, which fill the upper and lower leaf spring surfaces respectively. With high wear resistance and high strength, this reduces wear and fatigue damage at the contact points between the leaf spring and the seat surface. A large arc transition rib 5 is connected to the side of the upper leaf spring seat 4 away from the flange 2. The large arc transition rib 5 is connected to the outer wall of the axle housing body 1, and the connection between the large arc transition rib 5 and the axle housing body 1 adopts a smooth transition design. A connecting rib 6 is connected to the axle housing body 1, with its left and right ends connected to the large arc transition rib 5 and the mounting seat 7 respectively. A flange-side transition rib 3 is connected to the side of the upper leaf spring seat 4 near the flange 2, and the flange-side transition rib 3 is connected to the axle housing body 1. A reinforcing rib 8 is connected to the side wall of the axle housing body 1, and the reinforcing rib 8 is connected to the bottom wall of the upper leaf spring seat 4. A connecting rib 10 is connected to the side of the lower leaf spring seat 9 away from the flange 2, and the connecting rib 10 is connected to the axle housing body 1. The large arc transition rib 5, flange side transition rib 3, connecting rib 10, connecting rib 2 6, and reinforcing rib 8 work together to optimize the stress transmission path and disperse the load in the stress concentration area through a reasonable structural layout and smooth transition design.

[0025] The specific implementation process is as follows:

[0026] During use, in the assembly stage, first clean the axle housing body 1 to ensure that there is no oil or impurities at any connection point. Pass bolts with thread-locking coating through the upper and lower mounting holes 13 of the upper and lower leaf spring seats 9 and secure them to the leaf springs, utilizing the high friction of the thread-locking coating to ensure a tight connection. Connect the half-shaft and other components via flange 2.

[0027] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A heavy duty truck axle housing characterized by: The axle housing body (1) is connected to a flange plate (2). The axle housing body (1) is connected to a mounting base (7), an upper leaf spring seat (4), and a lower leaf spring seat (9). The upper leaf spring seat (4) and the lower leaf spring seat (9) are respectively provided with an upper mounting hole (11) and a lower mounting hole (13). The upper leaf spring seat (4) and the lower leaf spring seat (9) are respectively provided with an upper leaf spring filling and reinforcing surface (12) and a lower leaf spring filling and reinforcing surface (14). The upper leaf spring seat (4) is connected to a large arc transition rib (5). The large arc transition rib (5) is connected to the axle housing body (1). The upper leaf spring seat (4) is connected to a flange side transition rib (3). The flange side transition rib (3) is connected to the axle housing body (1). The lower leaf spring seat (9) is connected to a connecting rib (10). The connecting rib (10) is connected to the axle housing body (1).

2. A heavy duty truck axle housing as set forth in claim 1 wherein: The bridge housing body (1) is connected to a reinforcing rib (8), which is connected to the upper leaf spring seat (4).

3. A heavy duty truck axle housing as set forth in claim 1 wherein: The bridge shell body (1) is connected to a connecting rib (6), and the two ends of the connecting rib (6) are respectively connected to the mounting base (7) and the large arc transition rib (6).

4. A heavy-duty truck axle housing as described in claim 1, characterized in that: The connection between the large circular arc transition rib (5) and the bridge shell body (1) adopts a smooth transition design.

5. A heavy-duty truck axle housing as described in claim 1, characterized in that: The bridge shell body (1) is formed by stamping with rigid material.

6. A heavy-duty truck axle housing as described in claim 1, characterized in that: The inner walls of the upper mounting hole (11) and the lower mounting hole (13) are both provided with a thread-locking coating.

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