A high load-bearing capacity military heavy truck steering knuckle

Abstract

This utility model relates to the field of steering knuckle technology and discloses a high-load-bearing military heavy-duty truck steering knuckle, including a fixed shell with a second connection hole inside; multiple steering knuckle arms, the outer walls of which are fixedly connected to both sides of the fixed shell, each steering knuckle arm having a first connection hole inside; multiple metal cylinders, each metal cylinder being slidably connected to the inner wall of the first connection hole, each metal cylinder having a disassembly component on its outer wall; and a load-bearing component located at the connection between the steering knuckle arms and the fixed shell, the load-bearing component including multiple support plates, the outer walls of which are fixedly connected to the connection between the fixed shell and the steering knuckle arms, each support plate being a triangular structure. In this utility model, the synergistic effect of the triangular support plates, reinforcing ribs, and corner fixing plates, along with the detachable and replaceable metal cylinder structure, enhances the product's economic practicality and overall load-bearing capacity.

Description

Technical Field

[0001] This utility model relates to the field of steering knuckle technology, and in particular to a high-load-bearing military heavy truck steering knuckle. Background Technology

[0002] Military heavy trucks, as core equipment for battlefield mobility and material transport, must bear extremely heavy loads in harsh conditions such as off-road and muddy terrain. The steering knuckle, as a key component connecting the wheels, axles, and steering system, directly determines vehicle handling safety and mission reliability through its load-bearing capacity and torsional stiffness. Because military scenarios place extremely high demands on component durability and stability, steering knuckle performance degradation or failure can lead to vehicle malfunction and mission delays. Therefore, developing highly reliable steering knuckles is crucial for improving the support capabilities of military heavy trucks.

[0003] Most existing steering knuckles are integrally cast structures, consisting of a steering arm, a fixed housing, a kingpin hole, and a wheel hub mounting base. During operation, the steering arm transmits steering torque to achieve wheel steering, while the wheel hub mounting base bears the wheel load and transmits it to the axle. To improve strength, high-strength alloys are often used for integral molding, with key parts reinforced by thickening the walls or welding simple flat plate reinforcements to meet the requirements of normal operating conditions.

[0004] Existing steering knuckles cannot achieve a wide and uniform load distribution, and their overall load-bearing capacity and torsional stiffness are difficult to adapt to complex working conditions. Due to the limitations of the integrated structure, the load is concentrated at the connection between the steering arm and the fixed housing, and around the kingpin hole, resulting in excessively high local stress. Under long-term heavy loads or off-road driving, fatigue cracks are prone to occur, leading to a decrease in torsional stiffness, steering lag, and even structural fracture, seriously affecting vehicle safety and reliability. Therefore, a high-load-bearing military heavy-duty truck steering knuckle is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high load-bearing capacity military heavy truck steering knuckle, which aims to improve the problem of stress concentration at the connection between the steering knuckle arm and the fixed shell of the traditional steering knuckle and the need to scrap and replace the entire component after the key load-bearing components are worn.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-load-bearing military heavy-duty truck steering knuckle includes:

[0008] A fixed shell, wherein a second connection hole is provided inside the fixed shell;

[0009] Multiple ram horn arms, the outer walls of the multiple ram horn arms are fixedly connected to both sides of the fixed shell, and each ram horn arm has a connection hole inside;

[0010] Multiple metal cylinders, each of which is slidably connected to the inner wall of the first connection hole, and each of which is provided with a disassembly assembly on its outer wall;

[0011] A load-bearing assembly located at the connection between the ram's horn arm and the fixed shell.

[0012] As a further description of the above technical solution:

[0013] The load-bearing component includes multiple support plates, the outer walls of which are fixedly connected to the connection between the fixed shell and the ram's horn arm, and each support plate is a triangular structure.

[0014] As a further description of the above technical solution:

[0015] Vertically intersecting reinforcing ribs are fixedly connected between two adjacent support plates, and the reinforcing ribs are used to disperse the surface stress of the support plates.

[0016] As a further description of the above technical solution:

[0017] Each corner of the fixed shell and the ram's horn arm is fixedly connected with a corner fixing plate, and each corner fixing plate is a triangular structure.

[0018] As a further description of the above technical solution:

[0019] Each of the disassembly components includes a connecting ring, the inner wall of which is fixedly connected to the outer wall of the metal cylinder, and the connecting ring is located on the opposite side of the two ram's horn arms.

[0020] As a further description of the above technical solution:

[0021] Each of the connecting rings is internally threaded with a plurality of bolts arranged in a ring array, with one end of each bolt penetrating the connecting ring and extending into the interior of the ram's horn arm.

[0022] As a further description of the above technical solution:

[0023] Each bolt is fitted with a rubber pad on its outer wall, and the multiple rubber pads are in contact with the outer surface of the connecting ring.

[0024] This utility model has the following beneficial effects:

[0025] In this invention, the synergistic effect of the triangular support plate, reinforcing ribs, and corner fixing plates achieves a wide and even distribution of load, significantly enhancing the overall load-bearing capacity and torsional stiffness of the steering knuckle. Furthermore, the detachable and replaceable metal cylinder structure facilitates maintenance and reduces costs, effectively solving the problems of stress concentration at the connection between the steering knuckle arm and the fixed housing, and the need for complete replacement of key load-bearing components after wear in traditional steering knuckles. This enhances the product's economic practicality and overall load-bearing capacity. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a high-load-bearing military heavy truck steering knuckle proposed in this utility model;

[0027] Figure 2 for Figure 1 Enlarged structural diagram at point A in the diagram;

[0028] Figure 3 This is a schematic diagram of the metal cylinder structure of a high-load-bearing military heavy truck steering knuckle proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the connecting ring structure of a high load-bearing capacity military heavy truck steering knuckle proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the bolt structure of a high-load-bearing military heavy truck steering knuckle proposed in this utility model.

[0031] Legend:

[0032] 1. Fixed shell; 2. Ox horn arm; 3. Support plate; 4. Reinforcing rib; 5. Corner fixing plate; 6. Metal cylinder; 7. Connecting ring; 8. Connecting hole one; 9. Bolt; 10. Rubber pad; 11. Connecting hole two. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 and Figure 2 One embodiment of this utility model is a high-load-bearing military heavy-duty truck steering knuckle, comprising:

[0035] The fixed housing 1 is usually cast from high-strength alloy steel (such as 35CrMo) to ensure its basic load-bearing capacity and impact resistance. It serves as the base of the entire steering knuckle and is used to connect the vehicle suspension system and integrate various functional components. The fixed housing 1 has a connecting hole 2 11 for installing the kingpin, which provides a core support point for the stable operation of the entire steering component.

[0036] Multiple steering arms 2, which are key components for transmitting steering torque and bearing road impact, are firmly fixed to both sides of the fixed shell 1 by high-frequency welding or integral casting to form a high-rigidity integral structure. Each steering arm 2 has a precision-machined connection hole 8 inside, which is used to accommodate and guide the metal cylinder 6, providing a precise pivot for steering movement.

[0037] Multiple metal cylinders 6, typically made of GCr15 bearing steel and hardened to achieve extremely high hardness and wear resistance, are connected to the inner wall of the connecting hole 8 by an interference fit or precision sliding. They are used to directly bear and transmit the huge radial load from the connecting parts, while also protecting the main body of the yoke arm 2 from wear as vulnerable parts, thus extending the overall service life. Each metal cylinder 6 is equipped with a disassembly assembly on its outer wall, enabling quick replacement and ensuring the high uptime of the military heavy truck.

[0038] The load-bearing component is located at the connection between the weakest structural element, the ram's horn arm 2, and the fixed shell 1. It is used to solve the problem of stress concentration at the root and achieves the effect of fundamentally improving torsional stiffness.

[0039] The load-bearing component includes multiple support plates 3. The outer walls of the multiple support plates 3 are fixedly connected to the connection between the fixed shell 1 and the ram's horn arm 2 by high-strength welding. Each support plate 3 is a triangular structure with optimal mechanical properties. This structure is used to effectively transfer the bending stress borne by the ram's horn arm 2 to the fixed shell 1, avoiding local stress overload. Vertically intersecting reinforcing ribs 4 are fixedly connected between two adjacent support plates 3. The reinforcing ribs 4, together with the multiple support plates 3, form a mesh-like stress dispersion system, which distributes the load more evenly on the entire load-bearing structure, thereby expanding the stress dispersion range. At the same time, corner fixing plates 5, which are also used to reinforce the structure, are fixedly connected at multiple corners between the fixed shell 1 and the ram's horn arm 2. Each corner fixing plate 5 is a triangular structure, which is used to reinforce the geometric discontinuities in the connection area and prevent the generation of fatigue cracks caused by stress concentration.

[0040] Reference Figures 3-5Each disassembly component includes a connecting ring 7. The inner wall of each connecting ring 7 is fixedly connected to the outer wall of the metal cylinder 6 by welding or heat fitting. The connecting ring 7 serves as a flange for disassembly operations, located on opposite sides of the two jack arms 2, providing a solid platform for applying disassembly force. Each connecting ring 7 is internally threaded with multiple 12.9 grade high-strength bolts 9 arranged in a circular array. One end of each bolt 9 passes through the connecting ring 7 and extends into the interior of the jack arm 2, used to fix and disassemble the metal cylinder 6 by tightening or loosening, achieving the purpose of convenient maintenance. The outer wall of each bolt 9 is fitted with a rubber pad 10 made of oil-resistant nitrile rubber. The multiple rubber pads 10 are in contact with the outer surface of the connecting ring 7, and under high-frequency vibration, they cooperate with the bolts 9 to lock and prevent loosening, playing an auxiliary role in shock absorption, buffering, sealing and dust prevention.

[0041] Working principle: During product use, the two ends of the connector are respectively placed in the connecting holes 8 inside the ram's horn arm 2, and are tightly fitted with the inner wall of the high-strength metal cylinder 6. The excellent rigidity and strength of the metal cylinder 6 itself provide a solid load-bearing foundation for the connector, which is the first step to achieve high load-bearing capacity. When military heavy trucks travel on complex road conditions, enormous forces are transmitted to the boom arm 2, causing bending stress. During this process, multiple support plates 3, with their optimal triangular structure for mechanical stability, effectively transfer and disperse the bending stress, which would otherwise be concentrated at the root of the boom arm 2, to a wider surface area of ​​the fixed shell 1. To further enhance the stress dispersion effect, vertically intersecting reinforcing ribs 4 are fixedly connected between adjacent support plates 3. These reinforcing ribs 4 transmit and homogenize the dispersed force among multiple support plates 3 again, forming a mesh structure that works together to bear the load, thereby expanding the range of force dispersion, ensuring the uniformity of stress distribution under ultimate load, and avoiding local overload. In addition, corner fixing plates 5, which are also triangular in structure, are added. These corner fixing plates 5 are specially reinforced at each connecting corner, enhancing the overall structural integrity and load-bearing capacity of the product, solving the problem of stress concentration at the root in traditional structures, improving the torsional stiffness of the boom arm 2 and the overall structural strength, and enhancing the overall load-bearing capacity of the product.

[0042] Considering that the metal cylinder 6 is the main load-bearing and moving contact component, it will wear due to friction during use. Maintenance personnel can loosen the multiple bolts 9 fixed on the connecting ring 7. Since one end of the bolt 9 passes through the connecting ring 7 and extends into the inside of the steering arm 2, after loosening, the connecting ring 7 and the metal cylinder 6 fixed to it can be slid out of the connecting hole 8 and replaced. The rubber pad 10 sleeved on the outer wall of each bolt 9 can provide a certain preload and buffering effect when tightened, which solves the problem of the entire steering knuckle being scrapped due to the wear of local vulnerable parts, avoids the high cost of whole replacement, and saves the use and maintenance costs of the entire product life cycle.

Claims

1. A high load capacity military heavy-duty truck steering knuckle, characterized in that, include: A fixed shell (1) is provided inside the fixed shell (1); Multiple ram horn arms (2) are fixedly connected to both sides of the fixed shell (1) on their outer walls. Each ram horn arm (2) has a connecting hole (8) inside. Multiple metal cylinders (6), each of the metal cylinders (6) is slidably connected to the inner wall of the connection hole (8), and each of the metal cylinders (6) is provided with a disassembly assembly on the outer wall; The support assembly is located at the connection between the ram's horn arm (2) and the fixed shell (1).

2. The high load capacity military heavy duty truck steering knuckle according to claim 1, characterized in that: The load-bearing component includes multiple support plates (3), the outer walls of which are fixedly connected to the connection between the fixed shell (1) and the ram's horn arm (2), and each support plate (3) is a triangular structure.

3. The high load capacity military heavy duty truck steering knuckle of claim 2, wherein: Vertically intersecting reinforcing ribs (4) are fixedly connected between two adjacent support plates (3), and the reinforcing ribs (4) are used to disperse the surface stress of the support plates (3).

4. A high-load-bearing military heavy-duty truck steering knuckle according to claim 3, characterized in that: Each corner of the fixed shell (1) and the ram's horn arm (2) is fixedly connected with a corner fixing plate (5), and each corner fixing plate (5) is a triangular structure.

5. A high-load-bearing military heavy-duty truck steering knuckle according to claim 1, characterized in that: Each of the disassembly components includes a connecting ring (7), the inner wall of which is fixedly connected to the outer wall of the metal cylinder (6), and the connecting ring (7) is located on the opposite side of the two ram's horn arms (2).

6. A high-load-bearing military heavy-duty truck steering knuckle according to claim 5, characterized in that: Each of the connecting rings (7) is threaded with a plurality of bolts (9) arranged in a ring array inside, with one end of each bolt (9) penetrating the connecting ring (7) and extending into the interior of the ram's horn arm (2).

7. A high-load-bearing military heavy-duty truck steering knuckle according to claim 6, characterized in that: Each of the bolts (9) is fitted with a rubber pad (10) on its outer wall, and the multiple rubber pads (10) are in contact with the outer surface of the connecting ring (7).

Images