Self-Aligning Stackable Test Weights for Crane Load Testing
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Solution Overview
Problem
Conventional methods for testing the load capacity of cranes require significant time and effort due to the need for separate platforms and additional components like pins and hooks, which also pose safety and storage challenges.
Innovation Solution
A system of stackable test weights with self-aligning features, comprising solid materials and designed with voids and block locks for easy stacking and lifting, allowing for precise weight configuration without additional alignment members, and utilizing a lifting device for efficient crane load testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods use separate platforms and additional components (pins, hooks), then the crane load testing can be performed, but the setup time and effort increase significantly
Solution Approach 1:
The patent combines the platform, alignment mechanisms, and weight stacking system into a single integrated test weight assembly. The platform includes built-in alignment features (guide rails, alignment pins) that eliminate the need for separate alignment tools and manual positioning, thereby reducing setup time while maintaining testing reliability
Solution Approach 2:
The test weight assembly is designed as a multi-functional system where the platform serves multiple purposes: it supports the weights, provides alignment guidance, and includes lifting attachment points. This eliminates the need for separate alignment devices and reduces the number of components needed, directly reducing setup time
2Reliability
If conventional methods use separate platforms and additional components, then the crane load testing can be performed, but the system complexity increases
Solution Approach 1:
The patent integrates the platform, alignment mechanisms, and weight stacking system into a single unified assembly. The platform includes built-in guide rails and alignment pins that are permanently attached, eliminating the need for separate alignment devices and reducing the overall number of components, thereby simplifying the system while maintaining testing capability
Solution Approach 2:
The patent extracts and eliminates unnecessary intermediate components from the conventional system. By integrating alignment features directly into the platform structure, the design removes the need for separate alignment pins, hooks, and external positioning devices, reducing system complexity
3Reliability
If conventional methods use separate platforms, then the weights can be tested, but the storage space requirements increase
Solution Approach 1:
The patent designs the test weights to be stackable and nestable on the platform. The weights can be vertically stacked and stored in a compact arrangement, significantly reducing the horizontal storage space required compared to conventional methods where weights and platforms must be stored separately
4Reliability
If conventional methods require additional alignment members and components, then the weights can be secured, but the safety risks increase
Solution Approach 1:
The patent integrates the alignment and securing functions into the platform structure itself. The built-in guide rails and alignment pins provide automatic alignment and secure positioning of weights, eliminating the need for additional external securing devices that could fail or be improperly installed, thereby reducing safety risks
Data Source
AI summary
The present invention relates to test weights for testing the load capacity of a crane. More specifically, the present invention provides a novel system and approach simple and efficient crane load testing using solid weights. Previous methods of testing crane load capacity often require significant time to configure and reconfigure the apparatus. The system of the present invention increases efficiency by significantly reducing this configuration time. The system comprises a plurality of stackable test weights, and a lifting fixture specifically designed for the system. A cantilever structure located on two opposing sides of the test weight enables the lifting fixture to first be quickly secured underneath of said structure, and then lift that particular unit as well as any units surmounting that unit. A novel block lock system integrated into each weight unit enables self-alignment and securing of each weight as it is placed onto the weight stack.