A high load fatigue resistant frame assembly

Abstract

The utility model discloses a high bearing anti -fatigue frame assembly, including two parallelly arranged longitudinal beam, and install the main crossbeam between two longitudinal beam, the longitudinal beam adopts high -strength alloy steel material to make, and the cross section shape of longitudinal beam is I -shaped, the upper flange and the lower flabellum thickness of longitudinal beam are all greater than the thickness of web, and the width of upper flange and lower flabellum is equal, longitudinal beam passes through the design of high -strength alloy steel material and I -shaped cross section, because upper flange and lower flabellum are relatively thick, can effectively improve the bending -resistant and the compression resistance of longitudinal beam, thereby improve the bearing capacity of whole frame assembly, and the main crossbeam and vice crossbeam pass through hollow rectangular steel pipe, can reduce the overall weight of frame while guaranteeing the strength, simultaneously, utilize the reasonable arrangement of main crossbeam and vice crossbeam, further strengthen the overall structural stability of frame, make it can bear greater load.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, specifically to a high load-bearing and fatigue-resistant vehicle frame assembly. Background Technology

[0002] As a crucial component of a vehicle, the chassis bears the weight of various vehicle parts, as well as cargo and personnel. Its performance directly impacts the vehicle's safety, reliability, and lifespan. In actual use, the vehicle chassis must withstand complex and varied loads, including static and dynamic loads. Static loads primarily consist of the weight of the vehicle's own components and the loaded cargo, while dynamic loads arise from vibrations, bumps, acceleration, deceleration, and other operating conditions during vehicle operation.

[0003] However, existing technologies still have significant shortcomings, such as:

[0004] In the existing technology, the frame is prone to deformation under high load conditions, which not only affects the overall structural stability of the vehicle, but also causes other components installed on the frame to malfunction. Under the long-term alternating load, the frame assembly is prone to fatigue cracks, reducing the service life of the frame, and in severe cases, it may even cause safety accidents. Utility Model Content

[0005] The purpose of this invention is to provide a high load-bearing and fatigue-resistant chassis assembly to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high load-bearing and fatigue-resistant frame assembly, comprising two parallel longitudinal beams, and a main crossbeam installed between the two longitudinal beams, wherein the longitudinal beams are made of high-strength alloy steel and the cross-sectional shape of the longitudinal beams is I-shaped;

[0007] The thickness of the upper and lower flanges of the longitudinal beam is greater than the thickness of the web, and the widths of the upper and lower flanges are equal.

[0008] The number of main crossbeams is multiple, and the multiple main crossbeams are evenly distributed along the length direction of the longitudinal beam;

[0009] A secondary crossbeam is installed on both sides of each of the main crossbeams to enhance the load-bearing capacity between the longitudinal beams and the main crossbeams.

[0010] A connecting unit is installed between the longitudinal beam and the main crossbeam to improve the fatigue resistance between the longitudinal beam and the main crossbeam.

[0011] Preferably, both the main crossbeam and the secondary crossbeam are made of hollow rectangular steel pipes, and the diameter of the main crossbeam is larger than that of the secondary crossbeam.

[0012] Preferably, the connecting unit includes several connecting plates fixedly installed at both ends of the main crossbeam, and the several connecting plates are welded to the longitudinal beam;

[0013] Bolts are installed through the top and bottom of several of the connecting plates, with one end of each bolt penetrating the longitudinal beam and extending to the outside of the longitudinal beam. Nuts are threaded onto the outer surface of the bolts located on the longitudinal beam.

[0014] Preferably, a reinforcing rib is provided at the connection between the longitudinal beam and the main crossbeam, and the reinforcing rib is triangular in shape, with its two right-angled sides welded to the longitudinal beam and the main crossbeam respectively.

[0015] Preferably, the surfaces of the main crossbeam and the secondary crossbeam are provided with a plurality of first weight-reducing holes to reduce the overall weight of the main crossbeam and the secondary crossbeam.

[0016] The webs of both longitudinal beams are provided with several second weight-reducing holes, and support members are fixedly installed inside the several second weight-reducing holes.

[0017] Preferably, the outer surfaces of the longitudinal beams, main crossbeams, and secondary crossbeams are all provided with anti-corrosion coatings to prevent corrosion of the longitudinal beams, main crossbeams, and secondary crossbeams.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The longitudinal beams are made of high-strength alloy steel and have an I-shaped cross-section. Due to the thicker upper and lower flanges, the bending and compressive strength of the longitudinal beams can be effectively improved, thereby increasing the load-bearing capacity of the entire frame assembly. The main crossbeams and sub-crossbeams are made of hollow rectangular steel tubes, which can reduce the overall weight of the frame while ensuring strength. At the same time, the reasonable arrangement of the main crossbeams and sub-crossbeams further enhances the overall structural stability of the frame, enabling it to withstand greater loads.

[0020] 2. By adding reinforcing ribs, the stress at the connection nodes of the longitudinal beams and main crossbeams can be effectively dispersed, avoiding stress concentration that could lead to fatigue cracks in the longitudinal beams and main crossbeams. At the same time, the anti-corrosion coating on the outer surface of the longitudinal beams, main crossbeams, and secondary crossbeams can prevent rust and corrosion, further extending the service life of the longitudinal beams, main crossbeams, and secondary crossbeams and improving the fatigue resistance of the frame assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the connecting unit of this utility model;

[0023] Figure 3 This is a schematic diagram of the reinforcing rib structure of this utility model;

[0024] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0025] In the diagram: 1. Longitudinal beam; 2. Main crossbeam; 3. Secondary crossbeam; 4. Connecting unit; 41. Connecting plate; 42. Bolt; 43. Nut; 44. Reinforcing rib; 45. First weight-reducing hole; 46. Second weight-reducing hole; 47. Support component. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-4 This utility model provides a technical solution: a high load-bearing and fatigue-resistant frame assembly, including two parallel longitudinal beams 1, with a main crossbeam 2 installed between the two longitudinal beams 1. The longitudinal beams 1 are made of high-strength alloy steel and have an I-shaped cross section. The thickness of the upper and lower flanges of the longitudinal beams 1 is greater than the thickness of the web, and the widths of the upper and lower flanges are equal. There are multiple main crossbeams 2, which are evenly distributed along the length of the longitudinal beams 1. Sub-crossbeams 3 are installed on both sides of the multiple main crossbeams 2 to enhance the load-bearing capacity between the longitudinal beams 1 and the main crossbeams 2. Both the main crossbeams 2 and the sub-crossbeams 3 are made of hollow rectangular steel tubes, and the diameter of the main crossbeams 2 is larger than the diameter of the sub-crossbeams 3.

[0028] In this embodiment, the longitudinal beam 1 is made of high-strength alloy steel and has an I-shaped cross section. Due to the thicker upper and lower flanges, the bending and compressive strength of the longitudinal beam 1 can be effectively improved, thereby increasing the load-bearing capacity of the entire frame assembly. The main crossbeam 2 and the secondary crossbeam 3 are made of hollow rectangular steel tubes, which can reduce the overall weight of the frame while ensuring strength. At the same time, the reasonable arrangement of the main crossbeam 2 and the secondary crossbeam 3 further enhances the overall structural stability of the frame, enabling it to withstand greater loads.

[0029] Reference Figure 2 as well as Figure 3As shown, a connecting unit 4 is installed between the longitudinal beam 1 and the main crossbeam 2 to improve the fatigue resistance between the longitudinal beam 1 and the main crossbeam 2; the connecting unit 4 includes several connecting plates 41 fixedly installed at both ends of the main crossbeam 2, and the connecting plates 41 are welded to the longitudinal beam 1; bolts 42 are installed through the top and bottom of the surface of the connecting plates 41, and one end of the bolt 42 passes through the longitudinal beam 1 and extends to the outside of the longitudinal beam 1, and a nut 43 is threadedly connected to the surface of the bolt 42 on the outside of the longitudinal beam 1;

[0030] In this embodiment, in the connection between the longitudinal beam 1 and the main crossbeam 2, welding can form an interatomic bond between the two, thereby providing a high connection strength. The bolt 42 can further constrain the relative movement of the longitudinal beam 1 and the main crossbeam 2, enhance the reliability of the connection, and prevent the welded parts of the longitudinal beam 1 and the main crossbeam 2 from loosening or cracking due to vibration, fatigue and other factors during long-term use, which could lead to the risk of welded joint failure.

[0031] Reference Figure 1 as well as Figure 3 As shown, a reinforcing rib 44 is provided at the connection between the longitudinal beam 1 and the main crossbeam 2, and the reinforcing rib 44 is triangular in shape. The two right-angled sides of the reinforcing rib 44 are welded to the longitudinal beam 1 and the main crossbeam 2 respectively.

[0032] In this embodiment, the stress at the connection node between the longitudinal beam 1 and the main crossbeam 2 can be effectively dispersed, avoiding stress concentration that could lead to fatigue cracks in the longitudinal beam 1 and the main crossbeam 2.

[0033] Reference Figure 2 , Figure 3 as well as Figure 4 As shown, the surfaces of the main crossbeam 2 and the secondary crossbeam 3 are provided with a number of first weight-reducing holes 45 to reduce the overall weight of the main crossbeam 2 and the secondary crossbeam 3; the surfaces of the webs of the two longitudinal beams 1 are provided with a number of second weight-reducing holes 46, and the interiors of the number of second weight-reducing holes 46 are fixedly installed with support members 47.

[0034] In this embodiment, by using the first weight-reducing holes 45 and the second weight-reducing holes 46 on the surfaces of the longitudinal beam 1, the main crossbeam 2 and the secondary crossbeam 3, the overall weight of the frame can be reduced while ensuring the strength of the longitudinal beam 1, the main crossbeam 2 and the secondary crossbeam 3. At the same time, by utilizing the supporting performance of the support member 47, the bending and compressive strength of the longitudinal beam 1 can be further improved.

[0035] The outer surfaces of the longitudinal beam 1, the main crossbeam 2, and the secondary crossbeam 3 are all coated with an anti-corrosion coating to prevent corrosion from occurring on the longitudinal beam 1, the main crossbeam 2, and the secondary crossbeam 3.

[0036] In this embodiment, the anti-corrosion coating can prevent the longitudinal beam 1, main crossbeam 2 and secondary crossbeam 3 from rusting and corrosion, further extending the service life of the longitudinal beam 1, main crossbeam 2 and secondary crossbeam 3, and improving the overall fatigue resistance of the frame assembly.

[0037] Working principle: The longitudinal beam 1 is made of high-strength alloy steel and has an I-shaped cross section. Due to the thicker upper and lower flanges, the bending and compressive strength of the longitudinal beam 1 can be effectively improved, thereby improving the load-bearing capacity of the entire frame assembly. The main cross beam 2 and the secondary cross beam 3 are made of hollow rectangular steel tubes, which can reduce the overall weight of the frame while ensuring strength.

[0038] Meanwhile, the reinforcing rib 44 can effectively disperse the stress at the connection node between the longitudinal beam 1 and the main cross beam 2, avoid stress concentration, and prevent fatigue cracks in the longitudinal beam 1 and the main cross beam 2, thereby improving the fatigue resistance of the frame assembly.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high load-bearing and fatigue-resistant frame assembly, comprising two parallel longitudinal beams (1), and a main crossbeam (2) installed between the two longitudinal beams (1), characterized in that: The longitudinal beam (1) is made of high-strength alloy steel, and the cross-sectional shape of the longitudinal beam (1) is I-shaped. The thickness of the upper and lower flanges of the longitudinal beam (1) is greater than the thickness of the web, and the widths of the upper and lower flanges are equal. The number of main crossbeams (2) is multiple, and the multiple main crossbeams (2) are evenly distributed along the length direction of the longitudinal beam (1); A secondary crossbeam (3) is installed on both sides of each of the main crossbeams (2) to enhance the load-bearing capacity between the longitudinal beam (1) and the main crossbeam (2); A connecting unit (4) is installed between the longitudinal beam (1) and the main crossbeam (2) to improve the fatigue resistance between the longitudinal beam (1) and the main crossbeam (2).

2. The high load-bearing and fatigue-resistant frame assembly according to claim 1, characterized in that: Both the main crossbeam (2) and the secondary crossbeam (3) are made of hollow rectangular steel pipes, and the pipe diameter of the main crossbeam (2) is larger than that of the secondary crossbeam (3).

3. The high load-bearing and fatigue-resistant frame assembly according to claim 2, characterized in that: The connecting unit (4) includes several connecting plates (41) fixedly installed at both ends of the main crossbeam (2), and the several connecting plates (41) are welded to the longitudinal beam (1); Bolts (42) are installed through the top and bottom of the surface of several connecting plates (41), and one end of the bolt (42) passes through the longitudinal beam (1) and extends to the outside of the longitudinal beam (1). The surface of the bolt (42) located on the outside of the longitudinal beam (1) is threaded with a nut (43).

4. A high load-bearing and fatigue-resistant frame assembly according to claim 3, characterized in that: A reinforcing rib (44) is provided at the connection between the longitudinal beam (1) and the main cross beam (2), and the reinforcing rib (44) is triangular in shape. The two right-angled sides of the reinforcing rib (44) are welded to the longitudinal beam (1) and the main cross beam (2) respectively.

5. A high load-bearing and fatigue-resistant frame assembly according to claim 3, characterized in that: The surfaces of the main crossbeam (2) and the secondary crossbeam (3) are provided with a number of first weight-reducing holes (45) to reduce the overall weight of the main crossbeam (2) and the secondary crossbeam (3); The webs of the two longitudinal beams (1) are provided with several second weight-reducing holes (46), and the interiors of the several second weight-reducing holes (46) are fixedly installed with support members (47).

6. The high load-bearing and fatigue-resistant frame assembly according to claim 1, characterized in that: The outer surfaces of the longitudinal beam (1), main crossbeam (2) and secondary crossbeam (3) are all provided with anti-corrosion coatings to prevent the longitudinal beam (1), main crossbeam (2) and secondary crossbeam (3) from appearing.

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