Abstract
The stiffness of truck scales is the main influence factor on its measurement accuracy. Three kinds of SCS-100T large electronic truck scales are different in size arrangement of U-beam. Based on the finite element method, the models of the truck scales were established. The stiffness and strength of the scales were compared on account of the analysis results. The results show that U-beam arrangement of the low at both ends but high in the middle structure for the truck scale not only can save material but also meet the requirement of stiffness. Simulation analysis provides the theoretical basis for the structural design of truck scales.
Highlights
At present, the structures of the electronic truck scale mainly include three kinds, including i-section steel, channel-section steel and U-section steel
The size of ushaped beam arrangement has a great influence on the stiffness of the scale body, which has not been seen in the literature
Loading Conditions According to the standard GB/T 7723-2008 (this standard is a revision of GB/T 7723-2002 Fixed Electronic scale, based on OIML R76 NonAutomatic Weighing Apparatus (2006E) recommended by International Legal Metrological Organization) fixed electronic truck scale on the maximum relative deformation of the large weighing machine, the calibration must be carried out using the load of 40 t acting on the middle of each weighing platform for a scale with a maximum scale of 100 t
Summary
The structures of the electronic truck scale mainly include three kinds, including i-section steel, channel-section steel and U-section steel. The study found that U-section steel layout structure of the electronic truck scale was considered to be the most compressive capacity and the highest material utilization rate [1, 2]. The truck scale body structure of section steel was replaced with cold-bending groove made of steel plate, which made lighter weight, less consumables and its strength and stiffness requirements in mechanical properties can be achieved [7]. The deformation of single scales in SCS series 120 t truck scales was studied under different loading modes with the finite element method [9]. The scale body of SCS-100T Ubeam structure is taken as the research object, and the three U-beam size arrangement modes are simulated and calculated to explore the influence of size arrangement mode on the stiffness. The optimal arrangement mode is determined to provide theoretical basis for the transformation of truck scale without weight verification [10, 11]
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