High-temperature-resistant automobile axle body forging

Abstract

The utility model relates to the technical field of automobile parts manufacturing technique discloses a kind of high-temperature-resistant automobile axle body forgings, including connecting shaft, the threaded hole one is set in the connecting shaft bottom, the main shaft is fixedly connected in the connecting shaft top, the positioning slot is set in the main shaft top, the limit block one of multiple even distribution is fixedly connected in the main shaft inner side, the limit block two of multiple even distribution is fixedly connected in the main shaft outer side, the threaded hole two is set in the main shaft bottom, the gland is abutted in the main shaft top, the fixed hole one is set in the gland top, the limit slot one of multiple even distribution is set in the gland outer side, the fixed link is slidably connected in the gland inner side, adjusting groove is set in the fixed link top. In the utility model, the modularization detachable structure design is realized by the main shaft, the connecting disc, the fixed link and the gland, which not only improves the efficiency of replacing parts, but also significantly reduces the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to a high-temperature resistant automotive axle forging. Background Technology

[0002] As a core component of the transmission system and chassis, the performance of automotive axle forgings directly affects the safety and reliability of the vehicle. Traditional axle forgings face severe challenges in high-temperature environments such as the engine compartment and braking system. Automotive axle forgings mostly use alloy structural steels such as 42CrMo and 35CrMo, and are formed through hot forging and tempering to meet the requirements of conventional operating conditions.

[0003] Traditional automotive axle forgings require the replacement of the entire forging when a large axle forging is damaged, rather than allowing for partial replacement. This significantly increases maintenance costs. When automotive axle forgings operate in a high-temperature environment for extended periods, localized forgings are prone to progressive deformation and accelerated surface oxidation, leading to bearing damage. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-temperature resistant automotive axle forging, which aims to improve the problems of high maintenance costs caused by the need to replace the entire large axle forging when it is damaged, and bearing damage caused by localized gradual deformation and surface oxidation under high temperature environment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-temperature resistant automotive axle forging includes a connecting shaft. The connecting shaft has a threaded hole at its bottom. A main shaft is fixedly connected to the top of the connecting shaft. The main shaft has a positioning groove at its top. Multiple evenly distributed limiting blocks are fixedly connected to the inner side of the main shaft. Multiple evenly distributed limiting blocks are fixedly connected to the outer side of the main shaft. The main shaft has a threaded hole at its bottom. A pressure cap abuts against the top of the main shaft. The pressure cap has a fixing hole at its top. Multiple evenly distributed limiting grooves are formed on the outer side of the pressure cap. A connecting plate is fixedly connected to the top of the pressure cap. The connecting plate has a fixing hole at its top and multiple evenly distributed connecting holes at its top. A fixing rod is slidably connected to the inner side of the pressure cap, and an adjustment groove is formed on the top of the fixing rod.

[0007] As a further description of the above technical solution:

[0008] An expansion sleeve is fitted on the outer side of the main shaft. Multiple evenly distributed limiting grooves are opened at the bottom of the outer side of the expansion sleeve. Multiple evenly distributed expansion grooves are opened on the outer side of the expansion sleeve. A spring abuts against the top of the inner side of the main shaft.

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

[0010] The spring is slidably connected in the positioning groove, and the expansion sleeve abuts against the top of the outer side of the pressure cap;

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

[0012] The first limiting block is slidably connected in the first limiting groove, and the second limiting block is slidably connected in the second limiting groove;

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

[0014] The pressure cap is slidably connected in the positioning groove, and the pressure cap abuts against the top of the spring;

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

[0016] The fixing rod is slidably connected in fixing hole one, the fixing rod is slidably connected in fixing hole two, and the fixing rod is threadedly connected in threaded hole two;

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

[0018] The top outer side of the pressure cap is conical and the bottom outer side of the main shaft is conical and the top outer side is conical.

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

[0020] The bottom of the fixing rod is threaded.

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

[0022] 1. In this utility model, a modular and detachable structural design is achieved through the main shaft, connecting plate, fixing rod, and pressure cap. The fixing rod connects the connecting plate, pressure cap, and main shaft in sequence. The threaded groove at the bottom of the fixing rod connects to the threaded hole of the main shaft. The limiting design of the fixing rod and pressure cap ensures the stability of the connection. The cooperation of the limiting block and the limiting groove further strengthens the stability during operation. When the forging part is damaged, only the damaged part needs to be disassembled and replaced. This design significantly reduces maintenance costs.

[0023] 2. In this utility model, through the cooperation of the expansion sleeve, expansion groove and spring, when the shaft expands radially at high temperature, the expansion groove allows the expansion sleeve to expand radially along the conical surface of the pressure cap and the main shaft, and the elastic force of the spring maintains a uniform tension force, thus avoiding damage to the forging body caused by oxidation of the shaft surface. Attached Figure Description

[0024] Figure 1This is a three-dimensional schematic diagram of a high-temperature resistant automotive axle forging proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the fixing rod of a high-temperature resistant automotive axle forging proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the pressure cap for a high-temperature resistant automotive axle forging proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the main shaft of a high-temperature resistant automotive axle forging proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the expansion sleeve of a high-temperature resistant automotive axle forging proposed in this utility model.

[0029] Legend:

[0030] 1. Connecting shaft; 2. Threaded hole one; 3. Main shaft; 4. Positioning groove; 5. Limiting block one; 6. Limiting block two; 7. Threaded hole two; 8. Pressure cap; 9. Fixing hole one; 10. Limiting groove one; 11. Connecting plate; 12. Fixing hole two; 13. Connecting hole; 14. Fixing rod; 15. Adjusting groove; 16. Expansion sleeve; 17. Limiting groove two; 18. Expansion groove; 19. Spring. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-5This utility model provides an embodiment of a high-temperature resistant automotive axle forging, including a connecting shaft 1, which is the basic connecting unit of the axle and is used to achieve axial connection with external components. A threaded hole 2 is provided at the bottom of the connecting shaft 1, which is mainly used to improve the connection strength between the connecting shaft and the external components. A main shaft 3 is fixedly connected to the top of the connecting shaft 1. The bottom outer side of the main shaft 3 is conical, and the main shaft 3 mainly ensures the overall strength of the axle and also serves as a connection and fixation. The conical shape can better disperse local stress during high-temperature expansion. A positioning groove 4 is provided at the top of the main shaft 3. The positioning groove 4 mainly... The pressure cap 8 is used to determine its axial position and also provides installation space for the spring 19. Multiple evenly distributed limiting blocks 5 are fixedly connected to the inner side of the main shaft 3. These limiting blocks 5 restrict the circumferential rotation of the pressure cap 8, ensuring the stability of the entire shaft. Multiple evenly distributed limiting blocks 6 are fixedly connected to the outer side of the main shaft 3. These limiting blocks 6 are slidably connected within limiting grooves 17. A threaded hole 7 is provided at the bottom of the main shaft 3. This threaded hole 7 is mainly used to connect the fixing rod 14, thereby ensuring the stable connection of the entire modular device. The pressure cap 8 abuts against the top of the main shaft 3. The outer top of the pressure cap 8 is shaped like a conical bevel. The edge and the conical inclined edge of the bottom outer side of the main shaft 3 form a double conical surface, which can better disperse local stress. The pressure cover 8 is slidably connected in the positioning groove 4 and abuts against the top of the spring 19. The top of the pressure cover 8 has a fixing hole 9. Multiple evenly distributed limiting grooves 10 are opened on the outer side of the pressure cover 8. The limiting block 5 is slidably connected in the limiting groove 10. The fixing rod 14 penetrates the fixing hole 9 to connect the modular training device. The top of the pressure cover 8 is fixedly connected to the connecting plate 11. The connecting plate 11 is the interface for connecting the shaft to the external parts. The top of the connecting plate 11 has a fixing hole 12. The radius of the fixing hole 12 is larger than that of the fixing hole. The connecting plate 11 has a radius of 9. Multiple evenly distributed connecting holes 13 are opened on the top of the connecting plate 11. A fixing rod 14 is slidably connected to the inner side of the pressure cover 8. The bottom of the fixing rod 14 is threaded. The fixing rod 14 is slidably connected in the fixing hole 9 and the fixing hole 12. The fixing rod 14 is threadedly connected in the threaded hole 7. An adjustment groove 15 is opened on the top of the fixing rod 14. The fixing rod 14 has a stepped shaft structure. The top adjustment groove 15 can be used to rotate the fixing rod 14 by inserting a hexagonal wrench. The axial pressure is transmitted to the pressure cover 8 by the cooperation of the bottom threaded mechanism and the threaded hole 7, so as to realize the disassembly and assembly of the entire shaft.

[0033] Reference Figures 2-4In one embodiment of this utility model: an expansion sleeve 16 is fitted on the outer side of the main shaft 3. The expansion sleeve 16 is made of high-temperature resistant alloy. When the shaft temperature rises, the expansion sleeve 16 will expand radially along the conical surface, thereby achieving a stress dispersion function. The expansion sleeve 16 abuts against the top of the outer side of the pressure cover 8. Multiple evenly distributed limiting grooves 17 are opened at the bottom of the outer side of the expansion sleeve 16. The circumferential rotation of the expansion sleeve 16 can be restricted by the limiting grooves 17. Multiple evenly distributed expansion grooves 18 are opened on the outer side of the expansion sleeve 16. The expansion sleeve 16 has elastic deformation capability when expanding radially, avoiding stress concentration caused by rigid expansion, thereby damaging the shaft. A spring 19 abuts against the top of the inner side of the main shaft 3. Through the elasticity of the spring 19, it can ensure that the expansion sleeve 16 maintains a stable tension force at both normal and high temperatures. The spring 19 is slidably connected in the positioning groove 4.

[0034] Working principle: When some vulnerable parts wear or deform due to high temperature, it is not necessary to disassemble the entire shaft. Simply use a tool to loosen the fixing rod 14 through the adjusting groove 15 to separate the fixing rod 14 from the main shaft 3. At this time, the pressure cap 8, having lost its axial constraint, can slide upward along the positioning groove 4 to detach from the main shaft 3. Simultaneously, the expansion sleeve 16 is pulled out from the outside of the main shaft 3 through the sliding engagement of the second limiting block 6 and the second limiting groove 17. When disassembly is complete, the replacement expansion sleeve 16 is fitted into the main shaft 3, aligning the second limiting groove 17 with the second limiting block 6. The pressure cap 8 slides down along the positioning groove 4 to abut the spring 19, and then the threaded connection of the fixing rod 14 to the threaded hole 7 is tightened. The entire process only requires the replacement of local parts, avoiding transmission. The replacement of the entire shaft due to the failure of a single component in the system structure not only reduces replacement time but also saves replacement costs. When the shaft is running in a high-temperature environment, the main shaft 3 and the expansion sleeve 16 expand radially due to thermal expansion. The conical inclined edge at the bottom of the outer side of the main shaft 3 and the conical inclined edge at the top of the outer side of the pressure cover 8 form a guide surface, pushing the expansion sleeve 16 to expand radially and evenly. At the same time, the spring 19 ensures that the contact pressure between the expansion sleeve 16 and the inner ring of the bearing or the inner hole of the hub is stable, avoiding bearing overload caused by clearance changes. The expansion groove 18 of the expansion sleeve 16 increases the heat dissipation surface area, and together with the high-temperature resistant alloy material, the surface oxidation rate is reduced, avoiding damage to the forging body caused by oxidation of the shaft surface.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature resistant automotive axle forging, comprising a connecting shaft (1), characterized in that: The connecting shaft (1) has a threaded hole 1 (2) at its bottom. A main shaft (3) is fixedly connected to the top of the connecting shaft (1). A positioning groove (4) is provided on the top of the main shaft (3). Multiple evenly distributed limiting blocks 1 (5) are fixedly connected to the inner side of the main shaft (3). Multiple evenly distributed limiting blocks 2 (6) are fixedly connected to the outer side of the main shaft (3). A threaded hole 2 (7) is provided at the bottom of the main shaft (3). A pressure cap (8) abuts against the top of the main shaft (3). The pressure cap (8) has a fixing hole 1 (9) on its top, and multiple evenly distributed limiting grooves 1 (10) on the outer side of the pressure cap (8). A connecting plate (11) is fixedly connected to the top of the pressure cap (8). A fixing hole 2 (12) is opened on the top of the connecting plate (11). Multiple evenly distributed connecting holes (13) are opened on the top of the connecting plate (11). A fixing rod (14) is slidably connected to the inner side of the pressure cap (8). An adjustment groove (15) is opened on the top of the fixing rod (14).

2. The high-temperature resistant automotive axle forging according to claim 1, characterized in that: An expansion sleeve (16) is fitted on the outside of the main shaft (3). Multiple evenly distributed limiting grooves (17) are opened at the bottom of the outer side of the expansion sleeve (16). Multiple evenly distributed expansion grooves (18) are opened on the outer side of the expansion sleeve (16). A spring (19) abuts against the top of the inner side of the main shaft (3).

3. A high-temperature resistant automotive axle forging according to claim 2, characterized in that: The spring (19) is slidably connected in the positioning groove (4), and the expansion sleeve (16) abuts against the top of the outer side of the pressure cap (8).

4. A high-temperature resistant automotive axle forging according to claim 1, characterized in that: The first limiting block (5) is slidably connected in the first limiting groove (10), and the second limiting block (6) is slidably connected in the second limiting groove (17).

5. A high-temperature resistant automotive axle forging according to claim 1, characterized in that: The pressure cap (8) is slidably connected in the positioning groove (4), and the pressure cap (8) abuts against the top of the spring (19).

6. A high-temperature resistant automotive axle forging according to claim 1, characterized in that: The fixing rod (14) is slidably connected in the fixing hole one (9), the fixing rod (14) is slidably connected in the fixing hole two (12), and the fixing rod (14) is threadedly connected in the threaded hole two (7).

7. A high-temperature resistant automotive axle forging according to claim 1, characterized in that: The top of the outer side of the cover (8) is conical and the bottom of the outer side of the main shaft (3) is conical.

8. A high-temperature resistant automotive axle forging according to claim 1, characterized in that: The bottom of the fixing rod (14) is threaded.

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