a car cab

Abstract

The invention provides an automobile cab. The automobile cab comprises a threshold assembly, a side wall assembly and a floor assembly, wherein the threshold assembly is of a square cavity structure which is formed by an inner threshold body and an outer reinforcing plate in a welded mode, the side wall assembly is provided with a front vertical column, a middle vertical column and a rear vertical column, and the floor assembly comprises a front floor metal plate, a rear floor metal plate, a middle cross beam connected with the front floor metal plate and the rear floor metal plate, a front cross beam welded to the front end of the front floor metal plate and a rear cross beam welded to the rear end of the rear floor metal plate. The threshold assembly is welded to the floor assembly. The threshold assembly is welded to the side wall assembly at the positions corresponding to the front vertical column, the middle vertical column and the rear vertical column. A front floor reinforcing beam is welded to the position, corresponding to the middle vertical column, of the inner threshold body. A rear floor reinforcing beam is welded behind the front floor reinforcing beam. The front floor reinforcing beam is connected with the middle cross beam in a welded mode. The rear floor reinforcing beam is connected with the rear floor metal plate in a welded mode. According to the automobile cab, the stress performance is improved.

Description

technical field [0001] The invention relates to the field of automobile manufacturing, in particular to the structure of the automobile cab. Background technique [0002] The body door sill is a structural part that connects the lower part of the side wall with the floor assembly. When the cab is subjected to a side collision, the threshold needs to bear a large force to prevent the side deformation of the cab, which plays a very important role in protecting the safety of the occupants; in the process of driving, in order to ensure that the cab meets the requirements of reliability and bearing capacity, The threshold needs to effectively transmit the force borne by the floor, so as to ensure that there will be no local stress concentration on the body and cause the cab to crack. [0003] In the existing body structure, the door sill is connected to the floor, the front side pillar and the center pillar assembly, but is not connected to the rear side pillar. As a result, in ...

AI Technical Summary

Problems solved by technology

[0003] In the existing body structure, the door sill is connected to the floor, the front side pillar and the center pillar assembly, but is not connected to the rear side pillar. As a result, in a side collision, the force of the lower part of the car body cannot be effectively transmitted through the door sill, and the side wall is seriously deformed. , affecting occupant safety

[0004] Most of the existing body sill beams are designed as a closed "mouth" cavity structure, which has the defect that the rigidity of the sill is insufficient, and its bending and torsional performance does not meet the requirements

If the reinforcement plate is added to the whole section inside the door sill, the bending and torsional rigidity of the vehicle can be effectively improved, but the vehicle cannot achieve the lightweight target, which affects fuel economy

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