Hoist Cage Assembly With Slidable Bars For Pallet Lifting
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Solution Overview
Problem
Existing cage devices for lifting pallets with cranes often lack efficient mechanisms to distribute the weight of the pallet evenly, leading to potential instability and material loss during lifting.
Innovation Solution
A cage device with open bottom and top ends, featuring slidable bars through bar openings that transfer the pallet's weight onto the cage, and strategically arranged sleeves for bar storage, ensuring secure lifting and preventing material loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If slidable bars are used to transfer pallet weight onto the cage, then lifting stability is improved, but device complexity increases due to multiple bar openings and sliding mechanisms
Solution Approach 1:
The cage structure is segmented with multiple bar openings distributed across the cage body, allowing individual bars to be inserted at different locations. This segmentation enables weight distribution across multiple contact points, improving lifting stability while keeping each individual bar mechanism simple
Solution Approach 2:
The bar openings and sliding bar mechanism serve multiple functions: they transfer pallet weight to the cage, provide structural support, and enable the cage to accommodate different pallet sizes. This multi-functionality reduces the need for additional specialized components, managing device complexity
2Stability of the object's composition
If multiple bars are used to lift the pallet, then weight distribution is improved, but the difficulty of storing and retrieving bars increases
Solution Approach 1:
The bars are stored within the cage structure itself, with bar openings positioned to allow bars to be inserted and retained inside the cage body. This nesting approach eliminates the need for external storage racks or separate holding mechanisms, making storage and retrieval straightforward while maintaining multiple bars for weight distribution
3Adaptability or versatility
If the cage has open bottom and top ends for positioning around pallets, then adaptability is improved, but structural strength decreases
Solution Approach 1:
The cage is constructed with a segmented framework of vertical and horizontal bars creating multiple compartments. This segmentation provides structural strength through distributed load paths while maintaining open ends for adaptability. The grid-like structure achieves both strength and versatility
Solution Approach 2:
The cage structure has varying local qualities: thicker or reinforced bars at critical load-bearing positions, and lighter construction at non-critical areas. This allows the open-ended cage to maintain sufficient structural strength for lifting while preserving adaptability for different pallet sizes
Data Source
AI summary
A hoist cage assembly for lifting a pallet with a crane includes a cage that has a bottom end that is open for positioning around a pallet of material. The cage has a plurality of bar openings each extending through the cage. A plurality of bars is each of the bars is slidable through a respective pair of the bar openings to extend through the pallet when the cage is lowered over the pallet. Each of the bars rests on the cage when the cage is lifted to lift the pallet when the cage is lifted. A plurality of sleeves is each of the sleeves is coupled to the cage and the sleeves are strategically arranged on the cage thereby facilitating each of the bars to be slidably stored in the plurality of sleeves.