Pallet Strength Plates Impact Resistance
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Solution Overview
Problem
Conventional pallets are prone to damage and shortened lifespan due to impacts from material handling equipment, and existing solutions to enhance durability either increase production costs or are time-consuming to implement.
Innovation Solution
A pallet design featuring a base layer with strength plates coupled to the ends of connector boards and a stepped surface on support blocks to distribute impact forces, reducing the likelihood of connector board separation and extending the pallet's service life without increasing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If intermediate deck boards are butted against end deck boards to resist impacts, then impact resistance is improved, but the risk of multiple board failures increases
Solution Approach 1:
A steel strength plate is introduced as an intermediary component between the end deck board and intermediate deck boards. The strength plate absorbs and distributes impact forces, preventing direct transmission to the wood boards. This mediator approach allows the structure to withstand impacts without compromising the integrity of multiple boards.
2Strength
If end deck boards are dadoed or undercut into runners to strengthen the pallet, then impact resistance is improved, but manufacturing time and cost increase
Solution Approach 1:
The strength enhancement function is segmented from the wooden structure and implemented as a separate, pre-fabricated steel strength plate component. This segmentation allows the strength plate to be manufactured independently using efficient steel forming processes, then attached to the pallet during assembly, avoiding time-consuming woodworking operations like dadoing or undercutting.
Solution Approach 2:
The patent replaces complex woodworking mechanical operations (dadoing, undercutting) with a simpler attachment mechanism. The steel strength plate is secured using fasteners or adhesives, substituting the need for intricate joinery work and significantly reducing manufacturing complexity and time.
3Strength
If nail plates are used to strengthen wood pallet joints, then structural strength is improved, but positioning precision requirements and assembly cost increase
Solution Approach 1:
The strength plate design merges multiple functions into a single component: it strengthens the joint between deck boards and support blocks, provides impact resistance, and serves as a mounting surface for fasteners. This consolidation eliminates the need for separate nail plates and reduces the number of positioning-critical components during assembly.
Data Source
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AI summary
A pallet includes a cargo layer and a base layer. The base layer includes a pair of spaced apart end deck boards, and a pair of spaced apart connector boards orthogonal to the pair of spaced apart end deck boards, with each connector board and each end deck board having respective ends. A strength plate is coupled to each respective end of the connector boards in the base layer. Spaced apart support blocks are between the base and cargo layers, and form a gap therebetween for receiving a lifting member. First fasteners couple the cargo layer to an upper surface of the support blocks. Second fasteners couple the base layer to a lower surface of the support blocks so that the ends of the connector boards and the corresponding strength plates are coupled to a first area of the lower surface of the support blocks, and so that the ends of the end deck boards are coupled to a second area of the lower surface of the support blocks.