Variable-diameter chassis frame of structure with narrow front part and wide rear part

Abstract

The utility model discloses a variable-diameter chassis frame with a front-narrow and rear-wide structure, which comprises a left longitudinal beam, a right longitudinal beam and a plurality of cross beams connected between the left longitudinal beam and the right longitudinal beam, and the left longitudinal beam and the right longitudinal beam have the same structure and are bilaterally symmetrical by taking the center line of the whole frame as a symmetry axis; the left longitudinal beam and the right longitudinal beam are sequentially provided with a gooseneck part, a reducing part and a straight-through part from front to back, the gooseneck part is higher than the straight-through part, the vertical distance between the left longitudinal beam and the right longitudinal beam in the gooseneck part is smaller than the vertical distance between the left longitudinal beam and the right longitudinal beam in the straight-through part, and the reducing part is arranged in a concave mode and is connected with the gooseneck part and the straight-through part after being connected. The frame is simple in structure and smooth in overall modeling, the structure of the frame is changed through the variable cross-section longitudinal beams, the adaptability of the whole frame is improved, containers of different sizes can be better loaded, meanwhile, a vehicle is made to be lighter, and the strength, stability and safety of the frame are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to trailer frame processing technical field, concretely relates to a front narrow rear wide structure's variable diameter chassis frame. BACKGROUND

[0002] At present, with the rapid development of domestic automobile industry, technology diversification is changing day by day, in the trailer field, whole vehicle often develops various vehicle types according to market demand, such as for the loading of container. The frame of the existing container loading trailer is mostly linear longitudinal beam, the front and rear width is consistent, only suitable for short size container, such as Figure 5 As shown in the container structure, due to its length, the bottom of the container is provided with a groove matched with the gooseneck part of the semitrailer frame, and the existing container is mostly manufactured in a unified standard, so when loading the above-mentioned long container, the existing linear longitudinal beam cannot be well assembled and fixed with the bottom of the container, leading to unstable loading of the container, safety hazards, and low transportation efficiency. SUMMARY

[0003] The utility model discloses a front narrow rear wide structure's variable diameter chassis frame to solve the above-mentioned insufficient of prior art, provide a front narrow rear wide structure's variable diameter chassis frame to adapt to the loading of long size container.

[0004] To solve the above technical problem, the utility model adopts the technical scheme of a front narrow rear wide structure's variable diameter chassis frame, including left longitudinal beam, right longitudinal beam and the several crossbeams connected between the two, wherein the structure of left longitudinal beam and right longitudinal beam is same, with the center line of whole frame as the symmetry axis and left-right symmetry, the left longitudinal beam and right longitudinal beam are sequentially provided with gooseneck part, variable diameter part and straight-through part from front to back, wherein the gooseneck part is higher than straight-through part and is arranged, and the vertical distance between left and right longitudinal beams in gooseneck part is less than the vertical distance between left and right longitudinal beams in straight-through part, the variable diameter part is arranged in concave, and the gooseneck part and straight-through part are connected.

[0005] Further, the left longitudinal beam and right longitudinal beam all include upper wing plate, web and lower wing plate, the upper wing plate and lower wing plate are respectively located on the upper and lower sides of the web and are arranged in parallel, and form an I-shaped structure with the web, the web, upper wing plate and lower wing plate are integrally punched and bent from plate material, and are arranged in narrowing inward in the variable diameter part.

[0006] Further, the widest vertical distance between left and right longitudinal beams in gooseneck part is 1020mm, and the vertical distance between left and right longitudinal beams in straight-through part is 1100mm.

[0007] Further, at least two crossbeams are fixedly connected between the left longitudinal beam and right longitudinal beam in the variable diameter part.

[0008] Further, the crossbeam is a channel-shaped beam, and the cross section of the channel-shaped beam is in U shape.

[0009] Further, the cross section of the upper wing plate and the lower wing plate of the left longitudinal beam and the right longitudinal beam at the variable diameter position is wider than the cross section of the upper wing plate and the lower wing plate at other positions.

[0010] Further, the inner side of the web plate of the left longitudinal beam and the right longitudinal beam is provided with a reinforcing vertical plate, and the reinforcing vertical plate is arranged at the inner side of the gooseneck portion and the variable diameter portion.

[0011] Further, a plurality of reinforcing rib plates are arranged between the reinforcing vertical plate and the web plate, and the distance between the reinforcing vertical plate and the web plate near the front end of the gooseneck portion is smaller than the distance between the reinforcing vertical plate and the web plate near the rear end of the gooseneck portion, and the distance between the reinforcing vertical plate and the web plate near the front end of the variable diameter portion is larger than the distance between the reinforcing vertical plate and the web plate near the rear end of the variable diameter portion.

[0012] Further, the left longitudinal beam and the right longitudinal beam are made of high-strength steel.

[0013] Further, the fasteners used for connecting the structures of the components are fastening bolts and fastening nuts matched with the fastening bolts.

[0014] Compared with the prior art, the utility model has the advantages that the utility model has the advantages that the utility model has simple structure, fluent overall modeling, the structure of the frame is changed through the variable cross section longitudinal beam, the adaptability of the whole frame is improved, different sizes of containers can be better loaded, the vehicle is more lightweight, and the strength, stability, safety of the frame are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an overall structural schematic view of the utility model;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3 It is a top view of the utility model;

[0018] Figure 4 It is a top view structural schematic view of the web plate and the reinforcing vertical plate of the longitudinal beam in the utility model;

[0019] Figure 5 It is a bottom view of the container targeted by the utility model;

[0020] In the drawing: 1, left longitudinal beam, 2, right longitudinal beam, 3, crossbeam, 4, traction saddle, 11, gooseneck portion, 12, variable diameter portion, 13, straight-through portion, 14, upper wing plate, 15, web plate, 16, lower wing plate, 17, reinforcing vertical plate, 18, reinforcing rib plate. DETAILED DESCRIPTION

[0021] It should be noted that in the description of the utility model, the terms such as "upper", "lower", "front", "rear", "inner", "outer", "head end", "tail end", "center" and the like indicate the orientation or positional relationship shown in the drawings, and are only the relationship words determined for the purpose of conveniently describing the structural relationship of various components in the utility model, and are not particularly indicative of any component in the utility model necessarily having a specific orientation, being constructed and operated in a specific orientation, and cannot be understood as limiting the utility model.

[0022] In addition, the description such as "first", "second" and the like in the utility model is only for the purpose of description, and is not particularly indicative of the order or sequence, nor is it used to limit the utility model, which is merely for the purpose of distinguishing the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] The specific embodiments of the utility model will be further described in detail below in combination with the drawings:

[0025] As Figures 1 to 4As shown, a variable diameter chassis frame of a front narrow and rear wide structure is applied to a container loading semi-trailer, comprising a left longitudinal beam 1, a right longitudinal beam 2 and a plurality of cross beams 3 fixedly connected between the two. The left longitudinal beam 1 and the right longitudinal beam 2 are the same structure, symmetrically left and right with the center line of the overall frame as the symmetry axis. The left longitudinal beam 1 and the right longitudinal beam 2 are sequentially provided with a swan neck part 11, a variable diameter part 12 and a straight-through part 13 from the front end to the rear end of the frame. The variable diameter part 12 connects the swan neck part 11 and the straight-through part 13. The swan neck part 11 is upwardly curved and then arranged in parallel forward, higher than the horizontal plane of the straight-through part 13, and the upper end surface is parallel to the upper end surface of the straight-through part 13. The longitudinal cross-sectional width of the swan neck part 11 is smaller than that of the longitudinal beam at other positions. The front end of the swan neck part 11 is provided with a traction saddle 4. At the same time, the left longitudinal beam 1 and the right longitudinal beam 2 are both inwardly bent at the variable diameter part 12, so that the vertical distance between the left and right longitudinal beams in the swan neck part 11 is smaller than that in the straight-through part 13. The maximum vertical distance between the left and right longitudinal beams in the swan neck part 11 is 1020mm, which is suitable for the groove at the front end of the bottom of a long container. The vertical distance between the left and right longitudinal beams in the straight-through part 13 is 1100mm, which is suitable for the overall width of the container and facilitates single tire assembly and lightweight loading.

[0026] The left longitudinal beam 1 and the right longitudinal beam 2 each comprise an upper wing plate 14, a web plate 15 and a lower wing plate 16. The upper wing plate 14 and the lower wing plate 16 are respectively fixedly arranged on the upper and lower sides of the web plate 15 and arranged in parallel relative to each other, and are fixed together with the web plate 15 into an I-shaped structure. The web plate 15 is twice inwardly bent and stamped at the variable diameter part position, and is integrally formed by a plate material, so that the swan neck part 11 is narrower than the straight-through part 13. The upper wing plate 14 and the lower wing plate 16 are also respectively cut and stamped by a single plate material, and are narrowed and curved inwardly at the variable diameter part position, and the width thereof is greater than that at other positions. The outer edge width is fixed and extends inwardly, increasing the contact area and reducing the stress of the bearing gravity on the local part, thereby improving the strength at the variable diameter part 12. At the same time, the inner side of the web plate 15 in the left longitudinal beam 1 and the right longitudinal beam 2 is also provided with a reinforcing vertical plate 17. The reinforcing vertical plate 17 is only laid in the swan neck part 11 and the variable diameter part 12, and is fixed by welding with a plurality of reinforcing rib plates 18 between the upper and lower wing plates and the web plate 15, thereby increasing the connectivity and improving the strength. The distance between the reinforcing vertical plate 17 and the web plate 15 gradually widens from the front end of the swan neck part 11 to the rear end thereof, and then gradually narrows from the rear end of the swan neck part 11 to the rear end of the variable diameter part 12, thereby having continuity.

[0027] The inner side of the variable diameter part 12 in the left longitudinal beam 1 and the right longitudinal beam 2 is connected and fixed by at least two cross beams 3, so as to enhance the supporting strength and relative stability of the variable diameter part 12; the two ends of the cross beam 3 are fixedly connected with the web plate in the corresponding side longitudinal beam through fasteners, and the fasteners are selected from fastening bolts and fastening nuts matched with the fastening bolts. Here, the cross beam 3 is selected from a channel beam, and the cross section of the channel beam is in U shape. In addition, the outer side wall of the web plate 15 in the left longitudinal beam 1 and the right longitudinal beam 2 is provided with a reinforcing rib plate, so as to enhance the strength of the longitudinal beam.

[0028] The left longitudinal beam 1 and the right longitudinal beam 2 are both made of high-strength steel.

[0029] As another optimization technical scheme of the utility model, the web plate 15 in the left longitudinal beam 1 and the right longitudinal beam 2 is made of multi-section plate welding and fixing, so as to reduce the local concentrated stress of the bearing container, wherein the web plate section at the variable diameter part 12 is separately processed and is bent and formed.

[0030] The structure, proportion, size and the like shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by the person skilled in the art, and do not have technical substantial meaning, and any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and the purpose that can be achieved by the utility model, should still fall within the range covered by the technical content disclosed by the utility model.

[0031] Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A variable width chassis frame of a front narrow and rear wide structure, characterized in that: The frame comprises left and right longitudinal beams and several cross beams connected between the two, wherein the left and right longitudinal beams are identical in structure and symmetrical about the center line of the frame; the left and right longitudinal beams are provided with a swan neck, a variable diameter part and a straight-through part from front to back, wherein the swan neck is higher than the straight-through part, and the vertical distance between the left and right longitudinal beams in the swan neck is smaller than that in the straight-through part, and the variable diameter part is concave and connects the swan neck and the straight-through part; The left and right longitudinal beams each comprise an upper wing plate, a web plate and a lower wing plate, the upper and lower wing plates are respectively arranged on the upper and lower sides of the web plate and are arranged in parallel, and the web plate, the upper wing plate and the lower wing plate form an I-shaped structure; the web plate, the upper wing plate and the lower wing plate are integrally stamped and bent from a plate material, and the variable diameter part is arranged to be narrower inwardly; The cross-sectional width of the upper wing plate and the lower wing plate of the left and right longitudinal beams at the variable diameter part position is greater than that at other positions, and the outer edge width is fixed and extends inwardly; The inner side of the web plate of the left and right longitudinal beams is provided with a reinforcing vertical plate, and the reinforcing vertical plate is arranged inwardly of the swan neck and the variable diameter part; A plurality of reinforcing rib plates are arranged between the reinforcing vertical plate and the web plate; the distance between the reinforcing vertical plate and the web plate near the front end of the swan neck is smaller than that near the rear end of the swan neck, and the distance between the reinforcing vertical plate and the web plate near the front end of the variable diameter part is greater than that near the rear end of the variable diameter part.

2. The variable width chassis frame of claim 1, wherein: The widest vertical distance between the left and right longitudinal beams in the swan neck is 1020mm, and the vertical distance between the left and right longitudinal beams in the straight-through part is 1100mm.

3. The variable width chassis frame of claim 1, wherein: At least two cross beams are fixedly connected between the left and right longitudinal beams at the variable diameter part.

4. The variable width chassis frame of claim 3, wherein: The cross beam is a channel-shaped beam with a U-shaped cross section.

5. The variable width chassis frame of claim 1, wherein: The left and right longitudinal beams are made of high-strength steel.

6. A variable wheelbase chassis frame of the front narrow and rear wide configuration according to any one of claims 1 to 5, characterized in that: The fasteners for connecting the structures of the components are fastening bolts and fastening nuts used in cooperation.

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