Fifth Wheel Mounting Area Transmits Forces
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Solution Overview
Problem
Existing fifth wheels are complex to manufacture, heavy, and inefficient in transmitting forces between trailers and tractor vehicles, as they weaken the vehicle chassis frame and lack easy detachment and direct force transmission.
Innovation Solution
A fifth wheel design featuring a coupling plate supported by bearing brackets with a detachable mounting area on a transverse strut of the vehicle chassis frame, utilizing a U-profile member with a positive interlock and gusset plate for direct force transmission and easy attachment/detachment, ensuring the vehicle chassis frame is strengthened and adaptable to different chassis types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bearing bracket is designed as an integrally formed casting to absorb lateral forces, then the strength and force transmission capability are improved, but the manufacturing complexity and weight increase
Solution Approach 1:
The bearing bracket is divided into two separate components: a support area component and a mounting area component. The support area component absorbs lateral forces while the mounting area component attaches to the chassis frame, eliminating the need for a complex integrally formed casting while maintaining force transmission capability.
Solution Approach 2:
A separate mounting area component acts as an intermediary between the support area component and the chassis frame. This intermediary element simplifies the overall structure by separating the force absorption function from the mounting function, reducing manufacturing complexity while maintaining structural integrity.
2Stability of the object's composition
If the mounting area is fixed to the vehicle chassis frame to ensure stability, then the stability is improved, but the ease of detachment and adaptability to different chassis types deteriorates
Solution Approach 1:
The mounting connection is designed to be dynamically adjustable rather than fixed. The mounting area component can be positioned and secured at different locations on the chassis frame, allowing the same bearing bracket assembly to adapt to different chassis types while maintaining stable operation during use.
Solution Approach 2:
The mounting area component is designed with universal mounting capabilities that allow it to attach to different chassis frame configurations. This multi-functional design enables the same component to serve multiple mounting locations and chassis types, improving adaptability while maintaining stability through proper securing mechanisms.
3Ease of manufacture
If the fifth wheel is directly attached to the vehicle chassis frame to simplify mounting, then the ease of manufacture is improved, but the force transmission path becomes less direct and chassis integrity is compromised
Solution Approach 1:
The mounting area component serves as an intermediary element that directly connects the support area component to the chassis frame. This intermediary structure simplifies the mounting process while simultaneously providing a direct force transmission path, as the mounting area component is specifically designed to transfer forces efficiently between the fifth wheel and the chassis frame at optimized attachment points.
Data Source
AI summary
A fifth wheel comprises a coupling plate and at least two pillow blocks for the supported mounting of the coupling plate on a vehicle chassis of the tractor vehicle, the pillow block comprising a support region and a mounting region. The mounting region is designed for the detachable mounting of the pillow block to a transverse strut of the vehicle chassis of the tractor vehicle.