Three-parallel-truss-type passenger car body fully loaded structure

Abstract

Disclosed is a three-parallel-truss-type passenger car body fully loaded structure. The three-parallel-truss-type passenger car body fully loaded structure comprises a middle bearing region (1), a middle truss for short of a grid bottom frame parallel to an xoz coordinate plane of a coordinate system of a car body, a left side bearing region (6), a left truss for short of the left side of the car body and a right side bearing region (7), a right truss for short of the left side of the car body, wherein the middle truss is composed of truss structures which penetrate to the rearmost end of the car body from the forefront end of the car body and is provided with inclined struts, and the middle truss, the left truss and the right truss form an integrated three-truss-type bending preventing bearing structure. An ordinary upright engine (2) is placed in the middle of the car body and is placed on the same side of a passenger door. The overall structure of the car body is stressed in a more coordinated mode, and the overall rigidity and strength performance of the car body is greatly improved; because the bearing and utilization rates of materials of all parts of the car body are improved, the car body obviously becomes lighter; the utilization continuity of space inside the car body is good, and the passenger capacity and the luggage compartment capacity are obviously increased when the car body is compared with a traditional passenger car.

Description

technical field [0001] The invention relates to an innovative structure type of a parallel three-truss full-load passenger car body structure. Background technique [0002] The full load-bearing bus body structure is a space structure form of the bus body which is composed of grille underframe and body frame and can bear all loads, also known as "bus load-bearing body". Theoretically, the full load-bearing body structure should have the advantages of low weight, high rigidity, high safety, high fuel economy, and good comfort compared with non-load-bearing and semi-load-bearing body structures, and it is the mainstream direction of the development of bus body structures. In order to improve the safety of large-scale road tourist buses, GB7258-2012 "Motor Vehicle Safety Technical Conditions" stipulates that for road buses, tourist buses and all sleeper buses with a vehicle length greater than 11m, the body should be a full-load overall frame structure. [0003] During the dri...

AI Technical Summary

Problems solved by technology

According to the load distribution law, it can be seen that due to the limitation of the luggage compartment volume, it is not possible to set diagonal braces in the diagonal direction of the rectangular frame on the two sides parallel to the xoz coordinate plane of the vehicle body coordinate system like the skin area in the middle of the side wall In this way, when the grid base frame is subjected to a vertical downward bending load, it mainly relies on the bending deformation of the rectangular steel pipe to resist the bending load. Because the small cross-section rods have poor ability to bear the bending load, the grid base frame is greatly reduced. The bending load bearing capacity reduces the load utilization rate of the skeleton structure material and limits the potential of structural lightweight

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