Integrated light-weight tubular front axle

Abstract

The utility model discloses an integrated light-weight tubular front axle which comprises a hollow beam, the hollow beam is formed by integrally forging and pressing a front axle tube, a front axle right end tube body and a front axle left end tube body, the front axle right end tube body and the front axle left end tube body are located at the two ends of the front axle tube respectively, and a plate spring seat is arranged on the hollow beam. The plate spring seat is fixedly connected with the hollow beam, and main pin holes are formed in the front axle right end pipe body and the front axle left end pipe body; the front axle is integrally formed in a forging and pressing mode, epoxy welding among the front axle right end pipe body, the front axle left end pipe body and the front axle pipe, matching of the front axle right end pipe body and the front axle left end pipe body and other quality control points are omitted, the production process is reduced, the production cost is reduced, the production efficiency is improved, and the product quality is improved; and the later three-bag cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile front axles, and particularly relates to an integrated lightweight tubular front axle. Background Art

[0002] In the tubular front axle structure, the right and left tube bodies of the front axle are welded to the left and right ends of the front axle tube to replace the heavier forged I-beam front axle. At the same time, a cast steel plate support is welded on the steel tube to support and fix the front leaf spring, thereby realizing an effective connection between the front axle and the frame.

[0003] The overall weight of the existing tubular front axle is still relatively large. At the same time, the connections between the right and left end tubes of the front axle and the front axle tube need to be welded. The processing process is complicated and the overall strength is low. Driving on bumpy roads for a long time can easily cause the welds to crack, seriously affecting driving safety. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide an integrated lightweight tubular front axle.

[0005] The technical solution adopted by the present utility model is as follows: it includes a hollow beam, which is integrally forged by a front axle tube, a front axle right-end tube body and a front axle left-end tube body, the front axle right-end tube body and the front axle left-end tube body are respectively located at two ends of the front axle tube, a leaf spring seat is provided on the hollow beam, the leaf spring seat is fixedly connected to the hollow beam, and a kingpin hole is formed on the front axle right-end tube body and the front axle left-end tube body.

[0006] As a preferred embodiment of the present invention, a cavity is formed inside the hollow beam, and the diameter of the cavity at the front axle tube end is larger than the diameter of the cavity at the right end tube body of the front axle and the diameter of the cavity at the left end tube body of the front axle.

[0007] As a preferred embodiment of the present invention, a plug groove is provided on a side of the front axle right end tube body and the front axle left end tube body away from the front axle tube, and a plug is installed in the plug groove.

[0008] As a preferred embodiment of the present invention, a pin hole is provided in the plug groove, the pin hole passes through a side wall of the right end tube body of the front axle or the left end tube body of the front axle, and one end thereof extends to the pin hole.

[0009] As a preferred embodiment of the present invention, a leaf spring hole is provided on the leaf spring seat.

[0010] As a preferred embodiment of the present invention, the leaf spring seat is fixed to the hollow beam by welding.

[0011] As a preferred embodiment of the present invention, a steering limiting bolt seat is fixedly provided on the right end tube body of the front axle and the left end tube body of the front axle.

[0012] The beneficial effects of the utility model are:

[0013] As an integrated lightweight tubular front axle, the utility model eliminates the epoxy welding between the right and left end tubes of the front axle and the front axle tube, as well as the matching of the right and left end tubes of the front axle, and other quality control points by forging the front axle as a whole, thereby reducing the production process, lowering the production cost, improving the production efficiency, improving the quality of the product, and reducing the subsequent three guarantees costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a front cross-sectional structural diagram of the present utility model;

[0017] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0018] In the figure: 1. Hollow beam; 2. Leaf spring seat; 3. Plug; 11. Front axle tube; 12. Front axle right end tube body; 13. Front axle left end tube body; 14. Kingpin hole; 15. Pin hole; 16. Steering limit bolt seat; 21. Leaf spring hole; 31. Plug slot. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0021] The following combination Figure 1-3The specific embodiment of the utility model is described. The integrated lightweight tubular front axle includes a hollow beam 1. The hollow beam 1 is formed by integrally forging a front axle tube 11, a front axle right end tube body 12 and a front axle left end tube body 13. The hollow beam 1 is integrally formed with the front axle tubes 11 at both ends. Compared with the existing tubular front axle, the overall structural strength is improved. At the same time, the epoxy welding between the front axle right end tube body 12 and the front axle left end tube body 13 and the front axle tube 11 is avoided. The front axle right end tube body 12 and the front axle left end tube body 13 are respectively located at the two ends of the front axle tube 11. The hollow beam 1 is a hollow structure and is integrally forged. 1 structure, while maintaining the same stress strength, reduces overall weight, meeting the market demand for lightweight vehicles. At the same time, welding between the front axle right-end tube body 12, the front axle left-end tube body 13, and the front axle tube 11 is avoided, thereby improving overall strength (no breakage or deformation after 1.22 million times the fatigue test at 3.5 times the load), reducing process flow, and improving production efficiency. A leaf spring seat 2 is provided on the hollow beam 1, and the leaf spring seat 2 is fixedly connected to the hollow beam 1. Kingpin holes 14 are formed on the front axle right-end tube body 12 and the front axle left-end tube body 13. The kingpin holes 14 are used to connect the wheels and the frame to transmit various forces from the wheels.

[0022] Please refer to Figure 1 As shown, a cavity is formed inside the hollow beam 1, and the cavity diameter at the end of the front axle tube 11 is larger than the cavity diameter at the end of the front axle right end tube 12 and the cavity diameter at the end of the front axle left end tube 13. The cavity can reduce the overall weight of the front axle, wherein the cavity diameter at the end of the front axle tube 11 is larger, and the cavity diameters of the front axle right end tube 12 and the front axle left end tube 13 are smaller, that is, the wall thickness of the front axle right end tube 12 and the front axle left end tube 13 is greater than the wall thickness of the front axle tube 11, and the force strength of the front axle right end tube 12 and the front axle left end tube 13 is greater than that of the front axle right end tube 12, which meets the overall bearing strength of the front axle while reducing the overall weight. Compared with the ordinary front axle, the tubular front axle formed by forging a steel tube is 3.6kg lighter.

[0023] Please refer to Figure 1-Figure 2 As shown, the front axle right end tube body 12 and the front axle left end tube body 13 are provided with a plug 3 groove on the side away from the front axle tube 11, and a plug 3 is installed in the plug groove 31. The plug groove 31 is used to install a pin. By installing the plug 3 on the plug groove 31, the pin hole 15 can be protected from water and dust.

[0024] Please refer to Figure 2 As shown, a pin hole 15 is provided in the groove of the plug 3. The pin hole 15 passes through a side wall of the right end tube body 12 of the front axle or the left end tube body 13 of the front axle, and one end thereof extends to the pin hole 15. The pin hole 15 is used to improve the stability of the wheel and the frame when installed on the front axle.

[0025] Please refer to Figure 1-Figure 3 As shown, a leaf spring hole 21 is provided on the leaf spring seat 2. The leaf spring seat 2 is used to connect the vehicle frame and the axle. The leaf spring hole 21 is used to improve the stability of the front axle and the vehicle frame and axle.

[0026] Please refer to Figure 1 As shown, the leaf spring seat 2 is welded and fixed to the hollow beam 1 .

[0027] Please refer to Figure 3 As shown, a steering limiting bolt seat 16 is fixedly provided on the front axle right end tube body 12 and the front axle left end tube body 13, and the limiting bolt seat is used to connect the steering mechanism.

[0028] Working principle of this utility model:

[0029] The kingpin holes 14 formed on the front axle right end tube body 12 and the front axle left end tube body 13 are used for installing and connecting the frame and the wheels, and the leaf spring seat 2 is used for installing and connecting the axle and the frame. Among them, the front axle right end tube body 12 and the front axle left end tube body 13 are forged as a whole with the front axle tube 11. At the same time, the interior of the front axle tube 11 is a hollow structure. The overall forging and forming improves the overall strength while reducing the overall weight, which meets the market's lightweight requirements.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. One-piece lightweight tubular front axle, characterized by: The invention comprises a hollow beam (1), wherein the hollow beam (1) is integrally forged by a front axle tube (11), a front axle right end tube body (12) and a front axle left end tube body (13), wherein the front axle right end tube body (12) and the front axle left end tube body (13) are respectively located at two ends of the front axle tube (11), a leaf spring seat (2) is provided on the hollow beam (1), and the leaf spring seat (2) is fixedly connected to the hollow beam (1), and a main pin hole (14) is formed on the front axle right end tube body (12) and the front axle left end tube body (13).

2. The integrated lightweight tubular front axle according to claim 1, characterized in that: A cavity is formed inside the hollow beam (1), and the diameter of the cavity at the end of the front axle tube (11) is larger than the diameter of the cavity at the end of the front axle right end tube body (12) and the diameter of the cavity at the end of the front axle left end tube body (13).

3. The integrated lightweight tubular front axle according to claim 2, characterized in that: The front axle right end tube body (12) and the front axle left end tube body (13) are provided with a plug (3) groove on one side away from the front axle tube (11), and the plug (3) is installed in the plug (3) groove.

4. The integrated lightweight tubular front axle according to claim 3, characterized in that: A pin hole (15) is provided in the slot of the plug (3), and the pin hole (15) passes through a side wall of the right end tube body (12) of the front axle or the left end tube body (13) of the front axle, and one end thereof extends to the pin hole (15).

5. The integrated lightweight tubular front axle according to claim 1, characterized in that: The leaf spring seat (2) is provided with a leaf spring hole (21).

6. The integrated lightweight tubular front axle according to claim 5, characterized in that: The leaf spring seat (2) is fixed to the hollow beam (1) by welding.

7. The integrated lightweight tubular front axle according to claim 1, characterized in that: A steering limiting bolt seat (16) is fixedly provided on the front axle right end tube body (12) and the front axle left end tube body (13).

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