Blind-Stack Crate Guide Ribs Prevent Wall Deflection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing crates face challenges in blind-stacking, as they require significant manual effort and are prone to side wall deflection under load, leading to potential stack collapse and safety risks, especially when handling heavy loads above waist level.
Innovation Solution
The design incorporates guide ribs at the bottom of the crate that engage with the side walls of adjacent crates, preventing deflection and facilitating secure blind-stacking by providing a positive lock, which reduces manual effort and enhances stacking stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual blind-stacking is performed on heavy crates, then stacking operation can be completed, but operator effort becomes excessive and ergonomics deteriorate
Solution Approach 1:
The guide ribs on the bottom panel automatically engage with the stacking rim grooves of the lower crate during the blind-stacking operation. This self-guiding mechanism eliminates the need for operator intervention to align crates, allowing the stacking action to guide itself into proper position without excessive manual effort.
2Productivity
If crates are stacked with heavy loads, then stacking capacity is achieved, but side walls deflect outward causing stack collapse
Solution Approach 1:
The guide ribs are positioned and dimensioned to engage with the stacking rim grooves before the full load is applied. This preliminary engagement creates a locking action that prevents the side walls from deflecting outward when heavy loads are placed on the stacked crates, maintaining stack stability throughout the loading process.
3Ease of operation
If guide ribs are positioned close to the front of the base, then blind-stacking engagement is maximized, but manufacturing complexity increases
Solution Approach 1:
The bottom panel is segmented to include multiple guide ribs positioned at different locations. The primary guide ribs are placed near the front to maximize engagement, while additional ribs are positioned elsewhere to provide supplemental guidance and support. This segmentation allows the mold to be designed with separate cavity sections, making the complex geometry more manufacturable.
Data Source
AI summary
A crate is configured for blind-stacking on an adjacent crate with side walls. The crate may include a bottom panel, end walls extending from the bottom panel, and side walls extending from the bottom panel and connected between the end walls. The side walls include a stacking rim on a top surface. The bottom panel may include guide ribs under the side walls, respectively, and positioned adjacent a forward end of the crate. The guide ribs may be sized and shaped to positively engage the side walls of the adjacent crate, and the guide ribs may be configured to prevent the side walls of the adjacent crate from deflecting outward under load. The crate facilitates blind-stacking and helps to minimize the effort for an operator to handle heavier loads.