High-torque heavy truck drive axle yoke

Abstract

The utility model relates to transmission shaft fork technical field discloses a high torsion heavy truck transmission shaft fork, including the connecting seat, the connecting seat outer wall is fixedly connected with the steering plug no.

Description

Technical Field

[0001] This utility model relates to the field of drive shaft fork technology, and in particular to a high-torque heavy-duty truck drive shaft fork. Background Technology

[0002] In heavy-duty truck transmission systems, the driveshaft fork is a core component connecting the driveshaft to key parts such as the steering plug and connector. It primarily functions to transmit the high torque output from the engine, directly impacting the vehicle's power transmission efficiency and driving safety. With increasing load demands and more complex road conditions in heavy-duty trucks, the driveshaft fork must operate continuously under long-term high torque and high-frequency vibration conditions. Its structural strength and stability become crucial factors in ensuring the reliable operation of the transmission system, thus placing higher technical demands on the driveshaft fork's torsional resistance, the rigidity of its connection points, and its overall durability.

[0003] In existing technologies, high-torque heavy-duty truck driveshaft forks are typically manufactured using an integral forging process. The main structure includes a fork body for connecting the driveshaft, a plug for the steering system, and a connector for docking with other components. Some products add a straight reinforcing structure to the outer wall of the fork body to improve the basic strength. The lubrication system usually adds grease through a simple oil injection hole, relying on the size of the oil injection hole itself to control the grease retention. No specific structural optimization is performed for the stress characteristics of the connection parts. The technical principle is mainly to meet the basic transmission function, without fully considering the stress dispersion and structural protection requirements under high torque conditions.

[0004] In practical applications, existing high-torque heavy-duty truck driveshaft forks are prone to structural deformation due to stress concentration at the connection between the steering plug and the connector during long-term high-torque transmission, as the lack of a specific reinforcement structure at this connection point can lead to cracking in severe cases. This not only affects the normal service life of the driveshaft fork but also causes power transmission interruption in the transmission system, adversely impacting the driving safety and operational stability of heavy-duty trucks. Consequently, it fails to meet the long-term reliable operation requirements under high-load conditions. Therefore, a high-torque heavy-duty truck driveshaft fork is proposed to address these issues. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a high-torque heavy-duty truck drive shaft fork, which aims to improve the problem in the prior art where the plug and connector are prone to deformation and cracking due to stress concentration under high-torque conditions.

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

[0007] A high-torque heavy-duty truck drive shaft fork includes a connecting seat. A steering plug one and a steering plug two are fixedly connected to the outer wall of the connecting seat. A lower kingpin is rotatably connected inside the steering plug one, and an upper kingpin is rotatably connected inside the steering plug two. A plurality of reinforcing components are provided on the outer wall of the connecting seat, and a connecting ring is provided inside the connecting seat.

[0008] Each of the reinforcing components includes multiple inclined reinforcing plates. The outer wall of each inclined reinforcing plate is disposed on the outer wall of the connecting seat. One side of one inclined reinforcing plate is fixedly connected to the outer wall of the first steering plug, and the outer wall of the other inclined reinforcing plate is fixedly connected to the outer wall of the second steering plug. A fixing plate is fixedly connected to the other side of each inclined reinforcing plate. The outer wall of the fixing plate is fixedly connected to the outer wall of the connecting seat. Connecting shafts are fixedly connected to both sides of the connecting seat. Both the first steering plug and the second steering plug are provided with an oil injection component.

[0009] As a further description of the above technical solution:

[0010] The oil injection assembly includes a guide tube, the outer wall of which is fixedly connected inside the first steering plug and the second steering plug.

[0011] As a further description of the above technical solution:

[0012] An oil injection port is provided inside the guide tube, and multiple connecting rods are fixedly connected inside the guide tube.

[0013] As a further description of the above technical solution:

[0014] A fixed housing is fixedly connected to the other side of the connecting rod, and a sliding column is slidably connected inside the fixed housing.

[0015] As a further description of the above technical solution:

[0016] A sealing plug is fixedly connected to the top of the sliding column, and the outer wall of the sealing plug is slidably connected to the inside of the oil injection port.

[0017] As a further description of the above technical solution:

[0018] A limiting disc is fixedly connected to the bottom end of the sliding column, and the outer wall of the limiting disc is slidably connected inside the fixed outer shell.

[0019] As a further description of the above technical solution:

[0020] A compression spring is provided inside the fixed housing. The top end of the compression spring is fixedly connected to the bottom end of the limiting disc, and the bottom end of the compression spring is fixedly connected to the inner wall of the fixed housing.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, an inclined reinforcing plate is provided between the steering plug and the connecting seat. Utilizing a triangular stabilizing structure, it is inclinedly arranged along the force transmission path to fit the contour of the connection area between the two, thereby enhancing the rigidity of the connection part. This solves the problem that the plug and the connecting seat are prone to deformation and cracking due to stress concentration under high torque conditions, and greatly improves the overall torsional and fatigue resistance of the drive shaft fork, ensuring the stability of the transmission system.

[0023] 2. In this utility model, during oil injection, the sealing plug is pressed by injection pressure, allowing the lubricating oil to be injected and smoothly enter the lubrication part of the drive shaft fork along the guide tube. After the oil injection is completed, the sealing plug is automatically reset and closed by the spring, blocking the backflow of lubricating grease. At the same time, it prevents external mud, sand and water vapor from entering the interior through the guide tube. This solves the problem of lubricating grease loss and contaminant intrusion that is easy to occur in traditional oil injection guide tubes, significantly improving the sealing performance and lubrication durability of the drive shaft fork lubrication system, and ensuring the long-term stable operation of key components. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a high-torque heavy-duty truck drive shaft fork proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the inclined reinforcing plate of a high-torque heavy-duty truck drive shaft fork proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the guide tube of a high-torque heavy-duty truck drive shaft fork proposed in this utility model.

[0027] Legend:

[0028] 1. Connecting seat; 2. Steering plug one; 3. Steering plug two; 4. Lower kingpin; 5. Upper kingpin; 6. Connecting ring; 7. Inclined reinforcing plate; 8. Fixing plate; 9. Connecting shaft; 10. Oil inlet; 11. Guide tube; 12. Sealing plug; 13. Sliding column; 14. Fixed housing; 15. Connecting rod; 16. Compression spring; 17. Restricting disc. Detailed Implementation

[0029] 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.

[0030] Reference Figure 1 and Figure 2This utility model provides an embodiment of a high-torque heavy-duty truck driveshaft fork, including a connecting seat 1. The connecting seat 1 is forged from high-strength alloy steel and has excellent tensile and torsional resistance, capable of withstanding the high load torque of the heavy-duty truck transmission system, providing a stable foundation support for the entire driveshaft fork. A steering plug 1 2 and a steering plug 2 3 are fixedly connected to the outer wall of the connecting seat 1. A lower kingpin 4 is rotatably connected inside the steering plug 1 2, and an upper kingpin 5 is rotatably connected inside the steering plug 2 3. The lower kingpin 4 is made of carburized steel and has undergone heat treatment such as quenching and tempering, resulting in high surface hardness and good core toughness. It is used to realize the rotation function of the steering plug 1 2, allowing the truck to steer flexibly while driving. For example, when the vehicle turns, the lower kingpin 4, in conjunction with components such as the steering knuckle, allows the wheels to deflect smoothly and complete the steering action. The steering plug 2 3 is also connected to the upper main pin 5 through a bearing. The upper main pin 5 is made of the same material and has the same processing technology as the lower main pin 4. Together with the lower main pin 4, it improves the stability and reliability of steering. The outer wall of the connecting seat 1 is provided with multiple reinforcing components, and the connecting seat 1 is provided with a connecting ring 6 inside.

[0031] Each reinforcing component includes multiple inclined reinforcing plates 7. The inclined reinforcing plates 7 are made of high-strength alloy steel plates, which are cut and bent into shape. Their outer walls are installed on the outer wall of the connecting seat 1 by bolt fastening or welding. The triangular stable mechanical structure is used to disperse the stress generated during torque transmission. The outer wall of each inclined reinforcing plate 7 is set on the outer wall of the connecting seat 1. One side of one inclined reinforcing plate 7 is fixedly connected to the outer wall of the steering plug 1 2, and the outer wall of the other inclined reinforcing plate 7 is fixedly connected to the outer wall of the steering plug 2 3. The other side of each inclined reinforcing plate 7 is fixedly connected to a fixing plate 8. The fixing plate 8 is made of wear-resistant alloy steel and its outer wall is fixedly connected to the outer wall of the connecting seat 1 by bolts. This further strengthens the structural rigidity between the connecting seat 1 and the steering plug, and avoids deformation and cracking problems at the connection part due to stress concentration under high torque conditions. The outer wall of the fixing plate 8 is fixedly connected to the outer wall of the connecting seat 1. Connecting shafts 9 are fixedly connected to both sides of the connecting seat 1. Both the steering plug 1 2 and the steering plug 2 3 are equipped with oil injection components.

[0032] Reference Figure 2 and Figure 3The lubrication assembly includes a guide tube 11, which is made of high-strength alloy seamless steel pipe. Its inner wall is precision-machined to ensure a smooth surface, effectively reducing grease flow resistance. The outer wall of the guide tube 11 is fixedly connected to the pre-set mounting holes inside the steering plug 2 and steering plug 3 by welding, providing a channel for grease transmission. The guide tube 11 has an oil inlet 10 inside, which is a stepped hole structure. The smaller end is used to fit the oil outlet nozzle of the lubrication equipment, and the larger end cooperates with the sealing plug 12, serving as a guide and limiter. Multiple connecting rods 15 are fixedly connected inside the guide tube 11. A fixed housing 14 is fixedly connected to the other side of each connecting rod 15. A sliding column 13 is slidably connected inside the fixed housing 14. A sealing plug 12 is fixedly connected to the top of the sliding column 13. The sealing plug 12 is made of a composite material of rubber and a metal skeleton. The rubber part has good sealing and elasticity, while the metal skeleton ensures... For structural strength, the outer wall of the sealing plug 12 is slidably connected to the inside of the oil inlet 10 to seal the oil inlet 10 and prevent grease leakage and the intrusion of external impurities. The bottom end of the sliding column 13 is fixedly connected to the limiting disc 17, and the outer wall of the limiting disc 17 is slidably connected to the inside of the fixed housing 14. The fixed housing 14 is equipped with a compression spring 16, the top end of the compression spring 16 is fixedly connected to the bottom end of the limiting disc 17, and the bottom end of the compression spring 16 is fixedly connected to the inner wall of the fixed housing 14. The elastic coefficient of the compression spring 16 is 8-15 N / mm. When injecting grease, the injection pressure is usually 0.3-0.8 MPa, and the corresponding force acting on the sealing plug 12 is about 30-80 N. The elastic coefficient of 8-15 N / mm can ensure that the resistance generated when the spring is compressed by 5-8 mm matches the injection pressure. It will not cause the grease to flow too fast and splash during injection due to insufficient elasticity, nor will it hinder the injection operation due to excessive elasticity.

[0033] Working principle: During use, power is output from the engine and transmitted to the drive shaft fork through the transmission system. Connecting seat 1, as a key receiving component, works with steering plug 1 2 and steering plug 2 3. Through the connection of upper kingpin 5 and lower kingpin 4, torque is transmitted in an orderly manner. The inclined reinforcing plate 7 uses a triangular stabilizing structure to enhance the rigidity of the connection part along the force path, help disperse high torque, ensure stable torque transmission, and prevent the plug and connecting seat 1 from deforming or cracking due to stress concentration. When adding oil, external pressure acts on the oil inlet 10, pushing the sealing plug 12 to move and pushing the slide 13 down to compress the spring 16. The grease enters the part of the drive shaft fork that needs lubrication through the guide tube 11. After the oil is added, the compression spring 16 rebounds, driving the sealing plug 12 to reset, blocking the grease backflow, and at the same time isolating mud and water vapor, maintaining the sealing performance and lubrication durability of the lubrication system, and ensuring the stable operation of key components.

Claims

1. A high-torque heavy-duty truck driveshaft fork, comprising a connecting seat (1), characterized in that: The outer wall of the connector (1) is fixedly connected to a first steering plug (2) and a second steering plug (3). The first steering plug (2) is rotatably connected to a lower main pin (4). The second steering plug (3) is rotatably connected to an upper main pin (5). The outer wall of the connector (1) is provided with multiple reinforcing components. The connector (1) is provided with a connecting ring (6). Each of the reinforcing components includes multiple inclined reinforcing plates (7), the outer wall of each inclined reinforcing plate (7) is disposed on the outer wall of the connecting seat (1), one side of the inclined reinforcing plate (7) is fixedly connected to the outer wall of the first steering plug (2), the outer wall of the other inclined reinforcing plate (7) is fixedly connected to the outer wall of the second steering plug (3), the other side of each inclined reinforcing plate (7) is fixedly connected to a fixing plate (8), the outer wall of the fixing plate (8) is fixedly connected to the outer wall of the connecting seat (1), the connecting seat (1) is fixedly connected to both sides of the connecting shaft (9), and the first steering plug (2) and the second steering plug (3) are both provided with an oil injection component.

2. The high-torque heavy-duty truck driveshaft fork according to claim 1, characterized in that: The oil injection assembly includes a guide tube (11), the outer wall of which is fixedly connected inside the steering plug one (2) and the steering plug two (3).

3. A high-torque heavy-duty truck driveshaft fork according to claim 2, characterized in that: The guide tube (11) has an oil inlet (10) inside, and multiple connecting rods (15) are fixedly connected inside the guide tube (11).

4. A high-torque heavy-duty truck driveshaft fork according to claim 3, characterized in that: The connecting rod (15) is fixedly connected to a fixed housing (14) on the other side, and a sliding column (13) is slidably connected inside the fixed housing (14).

5. A high-torque heavy-duty truck driveshaft fork according to claim 4, characterized in that: The top of the sliding column (13) is fixedly connected to a sealing plug (12), and the outer wall of the sealing plug (12) is slidably connected inside the oil inlet (10).

6. A high-torque heavy-duty truck driveshaft fork according to claim 5, characterized in that: The bottom end of the sliding column (13) is fixedly connected to a limiting disk (17), and the outer wall of the limiting disk (17) is slidably connected inside the fixed outer shell (14).

7. A high-torque heavy-duty truck driveshaft fork according to claim 6, characterized in that: A compression spring (16) is provided inside the fixed housing (14). The top end of the compression spring (16) is fixedly connected to the bottom end of the limiting disc (17), and the bottom end of the compression spring (16) is fixedly connected to the inner wall of the fixed housing (14).

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