High-strength semitrailer longitudinal beam

Abstract

The utility model belongs to the technical field of longitudinal beams, and particularly relates to a high-strength semitrailer longitudinal beam which comprises a longitudinal beam body, the longitudinal beam body comprises an upper wing plate, a web plate and a lower wing plate, extending side plates are fixedly arranged on the upper wing plate and the lower wing plate, through holes are formed in the web plate, and reinforcing ribs and a connecting frame are fixedly arranged on the web plate. The longitudinal beam is integrally designed to be in a lateral U shape, the triangular extending side plates are fixedly welded to the left side edge of the upper wing plate and the left side edge and the right side edge of the lower wing plate, and the inclined faces of the extending side plates face outwards, so that rainwater and sundries cannot be accumulated at the connecting position of the lower wing plate and the web plate; traditional through holes in the web are used for improving the light weight and the stress dispersion degree of the longitudinal beam, the through holes are designed to be in the shape with the diameter gradually reduced from left to right, rainwater and other sundries cannot easily penetrate through the through holes to reach the inner side of the longitudinal beam, and therefore the overall strength is improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of longitudinal beams, in particular to a high-strength longitudinal beam for a semitrailer. Background Art

[0002] The longitudinal beam is the main component that runs through the longitudinal direction of the frame and is the main component of the frame that bears various loads. Its load-bearing capacity and force performance have an important impact on the safety, stability and service life of the vehicle. Therefore, various factors need to be fully considered during the design and manufacturing process and the quality needs to be strictly controlled to ensure that it meets the use requirements.

[0003] Most of the existing longitudinal beam cross-sections are I-shaped, which is widely used due to its simple process. However, rainwater and other debris are easily accumulated at the outer connection between the longitudinal beam web and the lower wing plate of this shape, which will affect the strength and service life of the longitudinal beam over time.

[0004] In order to solve the above problems, the present application proposes a high-strength semi-trailer longitudinal beam. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a high-strength semi-trailer longitudinal beam, including a longitudinal beam body, the longitudinal beam body including an upper wing plate, a web plate and a lower wing plate, the upper wing plate and the lower wing plate are both fixedly provided with extended side plates, the web plate is provided with through holes, and the web plate is fixedly provided with reinforcing ribs and a connecting frame.

[0006] Preferably, the cross-sectional shape of the longitudinal beam body is a side "U" shape, the web is fixedly connected between the upper wing plate and the lower wing plate, the extended side plate is fixedly connected to the left side of the upper wing plate, the left and right sides of the lower wing plate are fixedly connected with extended side plates, and the shape of the extended side plate is a triangle.

[0007] Preferably, the through holes are arranged at equal intervals on the web, and the diameters of the through holes gradually decrease from left to right.

[0008] Preferably, the reinforcing rib is fixedly connected between the upper wing plate and the lower wing plate, and the shape of the reinforcing rib is trapezoidal.

[0009] Preferably, the connecting frame is fixedly connected between the upper wing plate and the lower wing plate, the side surface of the connecting frame is fixedly connected to the reinforcing rib, and a cross beam is connected between the two connecting frames.

[0010] Preferably, the width of the upper wing plate is smaller than that of the lower wing plate, the width of the upper wing plate is equal to the width of the upper side of the reinforcing rib, the width of the lower wing plate is equal to the width of the lower side of the reinforcing rib, and the width of the connecting frame is smaller than the width of the upper wing plate.

[0011] The above technical solution of the utility model has the following beneficial technical effects:

[0012] The utility model designs the longitudinal beam as a whole into a side "U" shape, and triangular extended side plates are fixedly welded on the left side of the upper wing plate and the left and right sides of the lower wing plate. The inclined surfaces of the extended side plates are outward, so that rainwater and debris cannot accumulate at the connection between the lower wing plate and the web plate. The traditional through holes on the web plate are used to improve the lightweight and force dispersion of the longitudinal beam. The utility model designs the through holes into a shape with a gradually decreasing diameter from left to right, so that rainwater and other debris cannot easily pass through the through holes to reach the inside of the longitudinal beam, thereby improving the overall strength and extending the service life of the device. At the same time, the width of the lower wing plate is greater than that of the upper wing plate, so that when the vehicle is traveling on an uneven road surface, the lower wing plate can withstand a greater reaction force from the ground; then a plurality of reinforcing ribs are welded on the inner side of the longitudinal beam to improve the overall strength and load-bearing capacity, and a plurality of connecting frames are arranged on the web plate so that the cross beam can be connected to the longitudinal beam between the two connecting frames, thereby increasing the welding area and improving the strength and pressure burden effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a left side structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model from the right side;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0016] Reference numerals:

[0017] 1. longitudinal beam body; 101. upper wing plate; 102. web plate; 103. lower wing plate; 2. extended side plate; 3. through hole; 4. reinforcing rib; 5. connecting frame. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0020] A high-strength semi-trailer longitudinal beam provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0021] Embodiment 1:

[0022] Combination Figure 1-3As shown, the utility model provides a high-strength semi-trailer longitudinal beam, including a longitudinal beam body 1, the longitudinal beam body 1 includes an upper wing plate 101, a web plate 102 and a lower wing plate 103, the upper wing plate 101 and the lower wing plate 103 are fixedly provided with an extended side plate 2, the web plate 102 is provided with a through hole 3, the web plate 102 is fixedly provided with a reinforcing rib 4 and a connecting frame 5, the cross-sectional shape of the longitudinal beam body 1 is a side "U" shape, the web plate 102 is fixedly connected between the upper wing plate 101 and the lower wing plate 103, the extended side plate 2 is fixedly connected to the left side of the upper wing plate 101, the left and right sides of the lower wing plate 103 are fixedly connected with the extended side plate 2, and the shape of the extended side plate 2 is a triangle shape, the through holes 3 are equidistantly arranged on the web 102, the diameter of the through holes 3 gradually decreases from left to right, the stiffener 4 is fixedly connected between the upper wing plate 101 and the lower wing plate 103, the shape of the stiffener 4 is trapezoidal, the connecting frame 5 is fixedly connected between the upper wing plate 101 and the lower wing plate 103, the side of the connecting frame 5 is fixedly connected to the stiffener 4, a crossbeam is connected between the two connecting frames 5, the width of the upper wing plate 101 is smaller than the width of the lower wing plate 103, the width of the upper wing plate 101 is equal to the width of the upper side of the stiffener 4, the width of the lower wing plate 103 is equal to the width of the lower side of the stiffener 4, and the width of the connecting frame 5 is smaller than the width of the upper wing plate 101.

[0023] Specifically, the longitudinal beam body 1 is composed of an upper wing plate 101, a web plate 102 and a lower wing plate 103. The web plate 102 is fixedly welded between the upper wing plate 101 and the lower wing plate 103, and the shape of the longitudinal beam body 1 is a side "U" shape, so that rainwater and debris cannot accumulate at the outer connection between the lower wing plate 103 and the web plate 102. At the same time, an extended side plate 2 is fixedly welded on the left side of the upper wing plate 101 and the left and right sides of the lower wing plate 103 to increase the force-bearing area of ​​the upper wing plate 101 and the web plate 102, so as to achieve the effect of bearing pressure and improve the bearing capacity of the longitudinal beam body 1. The shape of the extended side plate 2 is triangular, so that the inclined surface of the extended side plate 2 can divert rainwater or debris to the outside to avoid accumulation, thereby extending the service life of the longitudinal beam body 1. Through holes 3 are evenly spaced on 102 to make the longitudinal beam 1 lightweight and disperse the force of the longitudinal beam 1 to avoid breakage affecting its use. The diameter of the through holes 3 gradually decreases from left to right to prevent rainwater and debris on the outside from easily passing through the through holes 3 to reach the right side of the longitudinal beam 1, thereby avoiding the accumulation of rainwater and debris and extending the service life of the longitudinal beam 1. Reinforcement ribs 4 and connecting frames 5 are fixedly welded on the inner side of the longitudinal beam 1 to improve the overall strength and bearing capacity of the longitudinal beam 1. A welded crossbeam can be fixed between the two connecting frames 5 to increase the welding surface of the crossbeam and the longitudinal beam 1, improve the connection effect, improve the overall strength of the longitudinal beam 1, and disperse the pressure to each area of ​​the longitudinal beam 1 to avoid breakage due to excessive pressure.

[0024] The working principle and use process of the utility model are as follows: first, the connecting frame 5 is fixedly welded to the longitudinal beam body 1 and the reinforcing rib 4, and the upper crossbeam is fixedly welded between the two connecting frames 5, so that the crossbeam and the upper wing plate 101, the web plate 102, the lower wing plate 103 and the reinforcing rib 4 are fixedly connected together. When the vehicle is driving, the longer extended side plate 2 will bear the counterpressure transmitted from the ground, and the extended side plate 2, the reinforcing rib 4 and the connecting frame 5 will improve the strength and bearing capacity of the longitudinal beam body 1. When it rains, rainwater and debris will be diverted to the outside by the extended side plate 2 to avoid accumulation on the longitudinal beam body 1. At the same time, the shape of the through hole 3 will intercept rainwater and debris on the outside to prevent rainwater and debris from passing through the through hole 3 to reach the inside of the longitudinal beam body 1, thereby preventing the strength of the longitudinal beam body 1 from being affected and extending the service life of the longitudinal beam body 1.

[0025] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A high-strength semi-trailer longitudinal beam, comprising a longitudinal beam body (1), characterized in that: The longitudinal beam body (1) comprises an upper wing plate (101), a web plate (102) and a lower wing plate (103); an extended side plate (2) is fixedly provided on the upper wing plate (101) and the lower wing plate (103); a through hole (3) is opened on the web plate (102); and a reinforcing rib (4) and a connecting frame (5) are fixedly provided on the web plate (102).

2. A high-strength semi-trailer longitudinal beam according to claim 1, characterized in that: The cross-sectional shape of the longitudinal beam body (1) is a side "U" shape, the web plate (102) is fixedly connected between the upper wing plate (101) and the lower wing plate (103), the extended side plate (2) is fixedly connected to the left side of the upper wing plate (101), and the left and right sides of the lower wing plate (103) are both fixedly connected with the extended side plates (2), and the shape of the extended side plate (2) is a triangle.

3. The high-strength semi-trailer longitudinal beam according to claim 1, characterized in that: The through holes (3) are arranged at equal intervals on the web (102), and the diameters of the through holes (3) gradually decrease from left to right.

4. The high-strength semi-trailer longitudinal beam according to claim 1, characterized in that: The reinforcing rib (4) is fixedly connected between the upper wing plate (101) and the lower wing plate (103), and the reinforcing rib (4) is in a trapezoidal shape.

5. The high-strength semi-trailer longitudinal beam according to claim 1, characterized in that: The connecting frame (5) is fixedly connected between the upper wing plate (101) and the lower wing plate (103), the side of the connecting frame (5) is fixedly connected to the reinforcing rib (4), and a crossbeam is connected between the two connecting frames (5).

6. The high-strength semitrailer longitudinal beam according to claim 1, characterized in that: The width of the upper wing plate (101) is smaller than the width of the lower wing plate (103), the width of the upper wing plate (101) is equal to the width of the upper side of the reinforcing rib (4), the width of the lower wing plate (103) is equal to the width of the lower side of the reinforcing rib (4), and the width of the connecting frame (5) is smaller than the width of the upper wing plate (101).

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