Independent inverted trapezoidal suspension girder structure of semitrailer

Abstract

The utility model discloses an independent inverted trapezoidal suspension girder structure of a semitrailer. The independent inverted trapezoidal suspension girder structure comprises two longitudinal beams and a plurality of inverted trapezoidal frame structures, each inverted trapezoidal frame structure comprises an upper cross beam, a lower cross beam and two inclined supporting pieces, the upper cross beams serve as the two bottom edges of the inverted trapezoid of the lower cross beam, and the two inclined supporting pieces serve as the two waists of the inverted trapezoid; the position of each inverted trapezoidal frame structure corresponds to one suspension part of the semitrailer up and down; the two longitudinal beams are parallel to each other, each lower cross beam is arranged between the bottoms of the two longitudinal beams and is welded and fixed, and each upper cross beam stretches across the tops of the two longitudinal beams and is welded and fixed; one end of each diagonal bracing piece is welded and fixed with the end part of the upper cross beam, and the other end of each diagonal bracing piece is welded and fixed with the outer side of the bottom end of the longitudinal beam.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to an independent inverted trapezoidal suspension beam structure of a semi-trailer. Background Art

[0002] Semi-trailers are heavy-duty transport vehicles connected to the front of the vehicle by a traction pin, mainly used to transport large goods. In today's rapidly developing society, transportation efficiency has become the first choice for people, and semi-trailers are widely used due to their convenience in hanging and dropping.

[0003] The load-bearing capacity of a semi-trailer is an important performance, and the load-bearing capacity of a semi-trailer is mainly determined by the load-bearing strength of the semi-trailer beam. The beam is the main load-bearing component of the vehicle body and plays the role of supporting the car body. At present, the most common semi-trailer is the gooseneck semi-trailer, whose beam is in the shape of a gooseneck, extending from the front traction part of the semi-trailer to the rear suspension part. Such a semi-trailer beam itself is large in size and weight, which affects the load-bearing performance; it is easy to break, causing damage to the vehicle, and there are major safety hazards during driving; and such a beam needs to be made as a whole, which is troublesome to manufacture and install. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the technical solution adopted by the utility model is: an independent inverted trapezoidal suspension beam structure of a semi-trailer, characterized in that it includes two longitudinal beams and a plurality of inverted trapezoidal frame structures;

[0005] Each inverted trapezoidal frame structure includes an upper crossbeam, a lower crossbeam and two diagonal braces, wherein the upper crossbeam serves as the two bottom sides of the inverted trapezoid of the lower crossbeam, and the two diagonal braces serve as the two sides of the inverted trapezoid;

[0006] The position of each inverted trapezoidal frame structure corresponds to a suspension part of the semi-trailer above and below;

[0007] The two longitudinal beams are parallel to each other, each lower cross beam is arranged between the bottoms of the two longitudinal beams and is welded and fixed, and each upper cross beam is arranged across the tops of the two longitudinal beams and is welded and fixed;

[0008] One end of each diagonal bracing member is welded and fixed to the end of the upper cross beam, and the other end of each diagonal bracing member is welded and fixed to the outer side of the bottom end of the longitudinal beam.

[0009] In some embodiments, a bending portion is formed on the inner side of the bottom end of each longitudinal beam, and the end of the lower cross beam is placed above the bending portion of the longitudinal beam.

[0010] In some embodiments, the upper beam and the lower beam are both hollow metal bars with an open bottom, and an inner plate is welded and fixed near both ends of each lower beam, and the inner plate corresponds to the position of the standing plate of the lower suspension part.

[0011] In some embodiments, the number of the inverted trapezoidal frame structures is four.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the independent inverted trapezoidal suspension beam structure of the semi-trailer provided by the utility model adopts an inverted trapezoidal frame structure at the connection with the suspension part, which has a stable structure, uniform force, can better withstand torsion, and reduces its own weight, which is beneficial to improving the load-bearing performance of the semi-trailer; and the suspension beam structure can be independently manufactured and then assembled into the whole vehicle, and its manufacturing and installation process is convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of an independent inverted trapezoidal suspension beam structure of a semitrailer provided by the utility model;

[0014] Figure 2 A schematic diagram of the position of the independent inverted trapezoidal suspension beam structure of the semitrailer provided by the utility model on the semitrailer;

[0015] Figure 3 A partial structural schematic diagram of an independent inverted trapezoidal suspension beam structure of a semitrailer provided by the utility model.

[0016] Description of Figure Numbers:

[0017] 1. Longitudinal beam; 2. Upper cross beam; 3. Lower cross beam; 4. Diagonal brace; 5. Inner standing plate; 6. Suspension part. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following further describes how the present invention is implemented in conjunction with the accompanying drawings and specific implementation methods.

[0019] Reference Figure 1 and Figure 2 As shown, the utility model provides an independent inverted trapezoidal suspension beam structure of a semitrailer, comprising two longitudinal beams 1 and a plurality of inverted trapezoidal frame structures; each inverted trapezoidal frame structure comprises an upper crossbeam 2, a lower crossbeam 3 and two diagonal bracing members 4, the upper crossbeam 2 serving as the two bottom sides of the inverted trapezoid of the lower crossbeam 3, and the two diagonal bracing members 4 serving as the two waists of the inverted trapezoid; the position of each inverted trapezoidal frame structure corresponds to a suspension portion 6 of the semitrailer up and down; the two longitudinal beams 1 are parallel to each other, each lower crossbeam 3 is arranged between the bottoms of the two longitudinal beams 1 and welded and fixed, and each upper crossbeam 2 is arranged across the tops of the two longitudinal beams 1 and welded and fixed; one end of each diagonal bracing member 4 is welded and fixed to the end of the upper crossbeam 2, and the other end of each diagonal bracing member 4 is welded and fixed to the outer side of the bottom end of the longitudinal beam 1.

[0020] The utility model provides an independent inverted trapezoidal suspension beam structure for a semitrailer, wherein the cross beam is divided into two layers, and the sides are diagonal braces 4, forming a stable inverted trapezoidal frame structure; two longitudinal beams 1 are mainly used for welding and fixing multiple inverted trapezoidal frame structures and bearing longitudinal forces.

[0021] Preferably, a bending portion is formed on the inner side of the bottom end of each longitudinal beam 1 , and the end of the lower cross beam 3 is placed above the bending portion of the longitudinal beam 1 .

[0022] Further references Figure 3 As shown, preferably, the upper cross beam 2 and the lower cross beam 3 are both hollow metal bars with an opening at the bottom, and an inner occupying plate 5 is welded and fixed near the two ends of each lower cross beam 3, and the position of the inner occupying plate 5 corresponds to the position of the standing plate of the lower suspension part 6, so that the upper and lower standing plates are in the same plane, ensuring that the overall structure is more evenly stressed.

[0023] In the present embodiment, the number of the inverted trapezoidal frame structures is four; it can be understood that in other embodiments, the number of the inverted trapezoidal frame structures can be adjusted as needed.

[0024] In summary, the independent inverted trapezoidal suspension beam structure of the semi-trailer provided by the utility model adopts an inverted trapezoidal frame structure at the connection with the suspension part, which has a stable structure, uniform force, can better withstand torque, and reduces its own weight, which is beneficial to improving the load-bearing performance of the semi-trailer; and the suspension beam structure can be independently manufactured and then assembled into the whole vehicle, and its manufacturing and installation process is convenient and flexible.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. The independent inverted trapezoidal suspension beam structure of the semi-trailer is characterized by: It comprises two longitudinal beams (1) and a plurality of inverted trapezoidal frame structures; Each inverted trapezoidal frame structure comprises an upper crossbeam (2), a lower crossbeam (3) and two diagonal bracing members (4), wherein the upper crossbeam (2) serves as the two bottom sides of the inverted trapezoid of the lower crossbeam (3), and the two diagonal bracing members (4) serve as the two sides of the inverted trapezoid; The position of each inverted trapezoidal frame structure corresponds to a suspension part (6) of the semi-trailer in the upper and lower directions; The two longitudinal beams (1) are parallel to each other, each lower cross beam (3) is arranged between the bottoms of the two longitudinal beams (1) and is fixed by welding, and each upper cross beam (2) is arranged across the tops of the two longitudinal beams (1) and is fixed by welding; One end of each diagonal bracing member (4) is welded and fixed to the end of the upper cross beam (2), and the other end of each diagonal bracing member (4) is welded and fixed to the outer side of the bottom end of the longitudinal beam (1).

2. The independent inverted trapezoidal suspension beam structure of a semitrailer according to claim 1, characterized in that: A bent portion is formed on the inner side of the bottom end of each longitudinal beam (1), and the end of the lower cross beam (3) is placed above the bent portion of the longitudinal beam (1).

3. The independent inverted trapezoidal suspension beam structure of a semitrailer according to claim 1, characterized in that: The upper cross beam (2) and the lower cross beam (3) are both hollow metal bars with an open bottom, and an inner occupant plate (5) is welded and fixed near both ends of each lower cross beam (3), and the inner occupant plate (5) corresponds to the position of the standing plate of the lower suspension part (6).

4. The independent inverted trapezoidal suspension beam structure of a semitrailer according to claim 1, characterized in that: The number of the inverted trapezoidal frame structures is four.

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