Modular Counterweight Block for Crane Ballast Handling
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Solution Overview
Problem
Existing ballast plates for cranes are difficult to handle due to their large dimensions and high weight, requiring complex and time-consuming transport logistics.
Innovation Solution
The ballast plate is designed as a modular system comprising two or more partial plates that can be connected via plug-in bolts or screws, allowing for easy assembly and disassembly, and featuring projections and recesses for secure stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If ballast plates are made as single large units, then the counter-torque generation is effective, but the handling and transport logistics become complex and time-consuming
Solution Approach 1:
The ballast plate is divided into multiple smaller partial plates (first partial plate, second partial plate, etc.) that can be handled separately. Each partial plate maintains the necessary weight and dimensions to contribute to counter-torque generation while being manageable in size for transport and installation operations.
2Strength
If ballast plates are made as single large units, then the structural integrity is maintained, but the lifting systems and transport vehicles must be of suitable large size
Solution Approach 1:
The ballast plate is segmented into multiple partial plates that can be transported using smaller, more readily available lifting equipment and transport vehicles. The segmentation reduces the size requirements for handling equipment while maintaining overall system integrity through proper connection design.
Solution Approach 2:
The partial plates are designed with stacking capability where smaller partial plates can be placed and secured on top of larger ones, creating a nested configuration. This allows efficient use of transport space and enables the use of smaller transport vehicles while still achieving the required total ballast weight.
3Ease of operation
If ballast plates are divided into multiple partial plates, then the handling and transport become easier, but the assembly requires connecting elements
Solution Approach 1:
Multiple partial plates are combined into a complete ballast plate assembly that functions as a unified structure for generating counter-torque. The connecting elements merge the separate partial plates into an integrated system that achieves the required structural integrity and weight distribution.
4Productivity
If ballast plates are made stackable, then the storage and transport efficiency is improved, but the partial plates require precise interlocking features
Solution Approach 1:
The partial plates feature asymmetric projections and corresponding recesses that enable directional stacking. The projections on one partial plate fit into recesses on the adjacent partial plate in a specific orientation, providing stable stacking configuration while accommodating manufacturing tolerances through the asymmetric geometry design.
Data Source
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AI summary
The invention relates to a counterweight block (10), in particular for a crane, consisting of a plurality of sub-blocks (12, 14) that can be interconnected.