Dump semi-trailer frame

Abstract

The invention relates to a self-unloading semi-trailer frame, which includes two longitudinal beams and a plurality of cross beams arranged between the two longitudinal beams, and the longitudinal beams include an upper flange, a web and a lower flange connected in sequence; the web It includes plate A, plate B and plate C connected in sequence, the plate B is vertically connected with the plate A and the plate C respectively, the plate A is connected with the upper wing plate, and the plate C is connected with the lower wing plate The middle part of the board is vertically connected, and the board B and the board C are respectively connected to the beam by welding. It has the advantages of reasonable structural design, high structural strength, less welding process, good cooperation with chain conveying mechanism, stable and reliable structure, etc.

Description

Technical field: [0001] The invention relates to the technical field of bulk cargo transportation equipment, in particular to a self-unloading semi-trailer frame. Background technique: [0002] Dump semi-trailer is mainly used for the transportation of grain, ore, coal, steel and other bulk cargo. The frame is the base of the self-unloading semi-trailer, and its main function is to support and install various assemblies and bear various loads inside and outside the semi-trailer. Therefore, the frame must have sufficient strength and rigidity. In addition, for the self-unloading semi-trailer, in addition to having sufficient strength and rigidity, the frame must also consider the cooperation with the chain conveyor mechanism. At present, there are two main unloading methods for the semi-trailer. The carriage is lifted and unloaded, and the other is to install a special chain conveying mechanism for unloading at the bottom of the carriage. The use of a chain conveying mechani...

AI Technical Summary

Problems solved by technology

[0003] like Figure 12 As shown, the existing vehicle frame includes two longitudinal girders (also called girders), and a plurality of beams are connected between the two longitudinal girders. The longitudinal girders are composed of upper flanges, webs and lower flanges. To a certain extent, it meets the requirements of the dump semi-trailer, but there are still some shortcomings in actual use: First, the structural strength of the longitudinal beam is not enough. Most of the existing longitudinal beams adopt a similar C-shaped structural design, which is designed to bear The capacity is average, and the body of the semi-trailer is generally long (the length of the body generally ranges from a few meters to more than ten meters), so the existing longitudinal beam structure may be deformed in actual use, which seriously affects the safety of the whole vehicle

The second is that the connection strength between the longitudinal beam and the cross beam is not enough. The existing connection between the beam and the longitudinal beam mainly relies on the welding connection between the end face of the beam and the web of the longitudinal beam, that is, the connection is realized by welding on one surface. This welding connection method bears the load The ability of welding is poor, and it is easy to open the welding due to impact. In severe cases, the beam and the longitudinal beam are separated, resulting in a safety accident.

[0006] From the above analysis, it can be seen that the existing technical scheme mainly improves the structural strength of the vehicle frame by welding the reinforcing components. This scheme is suitable for components with relatively short length and relatively large thickness, but it is not suitable for longitudinal beams with long strips and small thickness. Applicable, although the existing technical solutions can improve the structural strength of the frame, the technical effect is limited, and the additional welding process is not only time-consuming and laborious, but also causes deformation of the longitudinal beam, which in turn affects the structural strength of the longitudinal beam and the relationship between the longitudinal beam and the carriage. , chain conveyor mechanism, etc.

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