Vehicle Chassis Underrun Protection Device Multidirectional Load Transfer
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Solution Overview
Problem
Existing front underrun protection devices for commercial vehicle chassis are unable to bear multidirectional complex loads and are inconvenient to mount, failing to meet comprehensive force-bearing requirements during vehicle collisions.
Innovation Solution
A protection device comprising a beam and a base assembly with a beam connecting base and a frame connecting base, featuring obliquely disposed flange plates, side plates, a connecting plate, and a bearing member, designed to decompose and transfer multidirectional forces effectively while being compact and easy to mount, using materials like channel steel and U-shaped cross-section components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional front underrun protection device is used, then it can be mounted on the vehicle chassis, but it cannot bear multidirectional complex loads and is inconvenient to mount
Solution Approach 1:
The base assembly is divided into multiple independent components: beam connecting base, frame connecting base, side plates, connecting plates, and bearing members. Each component has a specific function and can be manufactured and assembled separately, improving both mounting convenience and structural performance
Solution Approach 2:
The protection device transitions from planar structure to three-dimensional spatial structure by adding vertically extending side plates and bearing members. This spatial configuration enables the device to bear loads from multiple directions (front, side, upward forces) simultaneously
2Volume of moving object
If the protection device structure is made compact, then design space is saved, but mounting convenience may be reduced
Solution Approach 1:
Multiple functional components are merged into an integrated base assembly that connects both the beam and frame simultaneously. The beam connecting base and frame connecting base are positioned adjacent to each other and work together as a unified structure, achieving compactness without sacrificing mounting convenience
Solution Approach 2:
The base assembly serves multiple functions: it connects the beam to the frame, bears multidirectional loads, provides structural support, and facilitates easy mounting through standardized connection interfaces. This multi-functionality allows a compact design to meet diverse requirements
Data Source
AI summary
A protection device (100) for a vehicle chassis includes a first flange plate (211) obliquely disposed to a rear side of a beam (10); a second flange plate (221) having a front end face abuts against a rear end face of the first flange plate (211), and connected to the first flange plate (211) through a bolt; a left side plate (222) and a right side plate (223) provided in perpendicular to a rear end face of the second flange plate (221); a connecting plate (224) having a left end connected to the left side plate (222) and a right end connected to the right side plate (223), and arranged close to front ends of the left side plate (222) and the right side plate (223); and a bearing member provided to the rear end face of the second flange plate (221) and located between the left side plate (222) and the right side plate (223).