Load Restraint Tensioning Tool With Switchable Reaction Bar Head
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Solution Overview
Problem
Existing tools for securing load restraint strips in shipping containers are cumbersome and time-consuming to remove, often requiring two workers and potentially causing labor costs and delays.
Innovation Solution
A tensioning tool comprising a winding fork, a wrench, and a reaction bar with a switchable reaction bar head that can alternate between a ratcheted and a free-turning configuration, facilitating easier removal and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional tensioning tool is used to secure load restraint strips, then the cargo is securely restrained, but the removal process becomes cumbersome and time-consuming
Solution Approach 1:
The reaction bar head is designed to be dynamically reconfigurable, switching between a ratcheted state during tensioning and a free-turning state during removal. This dynamic transformation allows the tool to maintain secure restraint during operation while enabling rapid removal afterward, directly resolving the contradiction between reliability and time loss.
2Reliability
If a traditional tensioning tool is used to secure load restraint strips, then the cargo is securely restrained, but the removal process requires two workers
Solution Approach 1:
The reaction bar head transforms from a ratcheted configuration that provides secure restraint to a free-turning configuration that enables single-operator removal. This dynamic reconfiguration allows one worker to easily remove the tool after tensioning is complete, resolving the contradiction between reliable cargo restraint and ease of operation.
3Strength
If a ratcheted reaction bar head is used during tensioning, then secure attachment is achieved, but removal becomes difficult
Solution Approach 1:
The reaction bar head is designed to switch from a ratcheted state with high attachment strength during tensioning to a free-turning state that allows easy removal. This dynamic transformation resolves the contradiction by providing strong attachment when needed while enabling effortless removal afterward.
Solution Approach 2:
The friction parameter between the reaction bar and winding fork is dynamically changed by switching from a ratcheted configuration (high friction, secure attachment) to a free-turning configuration (low friction, easy removal). This parameter change resolves the contradiction between attachment strength and ease of removal.
4Reliability
If the reaction bar head remains in ratcheted configuration, then secure tensioning is maintained, but the tool cannot be easily removed
Solution Approach 1:
The reaction bar head dynamically changes its mechanical configuration from ratcheted to free-turning, transforming the tool from a state of secure tensioning to a state of easy removal. This dynamic behavior resolves the contradiction between maintaining reliable tensioning and reducing removal complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables faster and more efficient removal of the tensioning tool, reducing labor costs and delays, while also providing a secure attachment of load restraint strips with an adhesive-backed patch.
Implementation Method 1
an adhesive coated end that is pressed into contact with an interior side wall of the container... An adhesive-backed patch may then be applied over the tightened ends to secure those ends together
Data Source
AI summary
A tensioning tool usable with load restraint strips may comprise a winding fork, a wrench, and a reaction bar. The reaction bar may comprise a reaction bar head that is switchable between two alternate configurations. In a first configuration, a hub in the reaction bar head may ratcheted and only rotatable within the head in one of two rotational directions. In a second configuration, the hub may be free-turning and rotatable in both rotational directions.