Removable Pallet Stops for Double Stacker Load Positioning
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Solution Overview
Problem
Existing lift trucks with double stacking capacity face challenges in efficiently positioning and orienting loads on lower forks, leading to instability and reduced operational efficiency during material handling.
Innovation Solution
The implementation of removable pallet stops that provide lateral orientation and axial positioning for loads on lower forks, secured between the mast assembly and the frame, ensuring proper alignment and stability of both upper and lower loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If double stacking capacity is implemented to increase materials handling efficiency, then productivity is improved, but load positioning and orientation stability deteriorates
Solution Approach 1:
The load positioning system is segmented into multiple independent components: pallet stops for axial positioning, lateral orientation devices, and securing mechanisms. Each component addresses a specific aspect of load stability, allowing the double stacker to maintain productivity while ensuring proper load positioning through distributed functional elements rather than a single complex system
Solution Approach 2:
Pallet stops and orientation devices are installed on the lower forks before loading occurs. These devices are pre-positioned to automatically guide and constrain the lower load into the correct axial and lateral position as it is placed on the forks, eliminating the need for manual positioning adjustments and ensuring stability from the moment of loading
2Ease of operation
If pallet stops are made removable to improve ease of operation, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The pallet stop system transitions from a fixed, permanent installation to a dynamic, reconfigurable setup. Quick-release mounting mechanisms allow the pallet stops to be easily installed and removed by operators based on operational needs, different load types, or maintenance requirements. This dynamic capability improves ease of operation while the standardized mounting interfaces keep the added complexity manageable
Data Source
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AI summary
A lift truck (10) includes a frame (12) defining a main structural component of the lift truck, a mast assembly (26) secured to the frame, first and second lower forks (20A, 20B), first and second upper forks (38A, 38B), and first and second pallet stops (50A, 50B). The lower forks are secured to the frame and are provided for supporting a lower load carried by the lift truck. The upper forks are located above the lower forks and are provided for supporting an upper load carried by the lift truck. The upper forks are movable with respect to the lower forks along the mast assembly. The pallet stops position the lower load on the lower forks and are secured in place between the mast assembly and the frame at laterally spaced apart locations. Each pallet stops includes a surface for contacting the lower load and for maintaining the lower load at a desired axial position.