Self-aligning test weight

摘要

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.

主权项

1. A test weight system for testing load capacity of a crane, the system comprising:
i) a plurality of stackable test weights, each test weight comprising:
a planar material;at least one void disposed in or on a bottom surface of the test weight;at least one protrusion disposed on the top of the test weight, wherein the protrusion is operably configured to be received by the void of another test weight in a manner that provides for self-aligning of the weights when stacked;at least one support structure disposed on a different surface of the test weight than the at least one protrusion and which different surface is the bottom surface of the test weight; ii) at least one gap disposed below the bottommost test weight and disposed between test weights when stacked.