Lashing Rod Assembly with Pivoting Hook Member
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Solution Overview
Problem
Conventional lashing rod assemblies for securing shipping containers to a ship's deck often result in lashing rods rubbing against each other, leading to deformation and waste of deck space due to insufficient distance between the mounting frame and the container.
Innovation Solution
A lashing rod assembly with a hook member and a lashing rod that includes a through hole with a shoulder region, allowing the hook member to pivot and engage with the container's corner casting, maintaining a short distance between the mounting frame and the container while preventing deformation by allowing angular movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the mounting frame is positioned close to the bottommost shipping container to optimize deck space, then deck space utilization is improved, but the lashing rods may rub against each other causing deformation
Solution Approach 1:
The patent makes the lashing rod system dynamic by introducing a movable hook member that can pivot and adjust its position. The hook member rotates about a fulcrum point, allowing the lashing rod to adapt its configuration based on the distance between the mounting frame and container, preventing contact between adjacent rods while maintaining secure fastening
Solution Approach 2:
The patent introduces rotational movement in a different dimension by allowing the hook member to pivot about a fulcrum point. This rotational degree of freedom enables the lashing rod to adjust its spatial configuration, moving from a fixed linear arrangement to a dynamic system that can accommodate varying distances without rod-to-rod contact
2Reliability
If the mounting frame is positioned farther from the shipping container to prevent lashing rod contact, then lashing rod deformation is prevented, but deck space is wasted
Solution Approach 1:
The dynamic hook member allows the system to maintain reliability at any mounting frame distance. The rotational capability enables the lashing rod to adjust its effective length and angle, preventing contact between rods even when the mounting frame is positioned close to the container, thus optimizing deck space without sacrificing integrity
3Device complexity
If a conventional lashing rod assembly with fixed geometry is used, then the structure is simple, but the lashing rods rub against each other when mounted close to containers
Solution Approach 1:
The patent introduces a dynamic element (rotatable hook member) into the lashing rod assembly. The hook member can rotate about a fulcrum point, transforming the fixed-geometry structure into a dynamic system that adapts to different mounting conditions, preventing rod contact while maintaining relatively simple construction
Solution Approach 2:
The fulcrum point acts as an intermediary element that enables rotational movement of the hook member. This fulcrum serves as a pivot point between the lashing rod and the mounting frame, allowing the system to adjust its configuration and prevent direct contact between adjacent lashing rods
Data Source
AI summary
A lashing rod assembly includes a lashing rod and a hook member. The lashing rod is displaceable between upper and lower positions. The hook member includes a weight segment, a power segment, a hook, and a flange. The weight segment is configured to extend into an inner space of a corner casting of a shipping container. The power segment extends into a through hole of the lashing rod. The hook is configured to be in abutting engagement with an inner surface of the corner casting when the lashing rod is displaced to the lower position. The flange has an interior fulcrum area configured to bear on a shoulder region of the through hole so as to permit the weight segment to be angularly movable during downward displacement of the lashing rod.