Adjustable Overhead Frame Structure for Rollover Protection
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Solution Overview
Problem
Conventional overhead frame structures for vehicles are adjustable but fail to meet industry-recognized standards for rollover protection when the upper section is lowered, compromising operator safety in low overhead clearance areas and beyond.
Innovation Solution
The overhead frame structure features a lower and upper section that are adjustably coupled, with the upper section capable of being positioned in either a raised or lowered configuration, ensuring that the structure meets industry-recognized standards for rollover protection regardless of its position, utilizing brackets with separate members for alignment and support, and incorporating fastener assemblies for secure adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the upper section is lowered to reduce vehicle height for maneuvering in low overhead clearance areas, then the vehicle's height is reduced, but the structure fails to meet industry-recognized standards for rollover protection
Solution Approach 1:
The overhead frame structure is divided into a lower section and an upper section that can be independently positioned. The lower section remains fixed to maintain rollover protection standards, while the upper section can be lowered to reduce vehicle height when needed. This segmentation allows the structure to meet safety standards in both raised and lowered configurations.
Solution Approach 2:
The upper section is made dynamically adjustable between raised and lowered positions through rotatable couplings and arresting devices. This dynamic capability allows the structure to adapt to different operational requirements while maintaining rollover protection compliance in each position through the integrated bracket design.
2Adaptability or versatility
If the upper section is made adjustable to modify vehicle height, then the structure becomes adaptable to different situations, but the complexity of the structure increases due to additional coupling mechanisms and arresting devices
Solution Approach 1:
The bracket is designed to integrate multiple functions: it provides structural support, enables rotational movement between sections, and incorporates arresting devices for position locking. By merging these functions into a single integrated component rather than separate elements, the design achieves adjustability while minimizing overall structural complexity.
Solution Approach 2:
The bracket serves multiple purposes simultaneously: it acts as a structural connector, a rotational joint, and a positioning mechanism with arresting devices. This multi-functionality reduces the need for additional separate components, thereby maintaining adaptability without proportionally increasing complexity.
3Ease of operation
If conventional adjustable structures are used, then height adjustment is possible, but the operator safety is compromised when the upper section is lowered for extended periods
Solution Approach 1:
The lower section is pre-configured with brackets and arresting devices that ensure rollover protection compliance is maintained regardless of upper section position. This preliminary design ensures that safety requirements are met in advance, eliminating the need for additional safety measures when the upper section is lowered for extended periods.
Data Source
AI summary
Overhead frame structures for a vehicle that are adjustable for modifying the overall height of the vehicles yet meet an industry-recognized standard of rollover protection for the operator of the vehicle regardless of such adjustment to the structure. In some cases, the structures are incorporated with brackets at their adjustable connection areas. The brackets have separate members for one or more of aligning and supporting adjustable members of the structure.