Retrofit Safety Chain Anchor for Heavy Agricultural Drawbars
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Solution Overview
Problem
Agricultural implements with heavier weights often require larger safety chains that cannot fit through the apertures on existing drawbar hangers, leading to a lack of secure mechanical coupling between tractors and implements.
Innovation Solution
A safety chain anchor system that can be retrofitted onto existing drawbar hangers, featuring a design with a first section that fits within the aperture and a second section that blocks removal, allowing larger safety chains to be used by anchoring them securely to the tractor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If larger safety chains are used for heavier implements, then the safety and reliability of the connection is improved, but the ability to fit through existing drawbar hanger apertures deteriorates
Solution Approach 1:
The safety chain connection system is divided into two separate components: the drawbar hanger aperture and the safety chain anchor. The anchor is a detachable component that can be installed in the aperture when needed, rather than requiring the entire chain to pass through the aperture. This segmentation allows large chains to be used without modifying the fixed aperture dimensions.
Solution Approach 2:
The safety chain anchor acts as an intermediary component between the drawbar hanger aperture and the safety chain. The anchor fits within the aperture and provides a connection point for the chain, mediating the connection between the tractor and implement. This intermediary allows the chain to be secured without requiring the chain itself to pass through the aperture.
2Reliability
If the safety chain anchor is designed to block removal in one direction, then the security of the connection is improved, but the complexity of the anchor structure increases
Solution Approach 1:
The safety chain anchor features an asymmetric design where one end (first end) has a smaller cross-sectional dimension that can pass through the aperture, while the other end (second end) has a larger cross-sectional dimension that blocks removal from the aperture. This asymmetric geometry provides automatic retention without requiring additional locking mechanisms or complex fastening systems.
Data Source
AI summary
A safety chain system that includes a drawbar hanger. The drawbar hanger includes a drawbar frame that defines a first aperture. A drawbar rests within the first aperture. A safety chain anchor also rests within the first aperture. The safety chain anchor defines a second aperture. The second aperture receives a safety chain. The safety chain anchor is able to slide in and out of the first aperture.