Load Test System for Lifting Devices
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Solution Overview
Problem
Current methods for load testing 'below-the-hook lifting devices' are costly and do not guarantee that all produced devices meet regulatory standards, as mandatory testing is often left to the user, leading to potential fines for non-compliance.
Innovation Solution
A load test system featuring a test bed frame with rolling beams, a hydraulic power station, and a monitoring and control station, which allows for secure attachment, precise load application, and data recording of lifting devices, ensuring compliance with regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If every lift device produced is load tested, then compliance with regulatory standards is ensured, but the cost becomes prohibitably expensive
Solution Approach 1:
The test system segments the testing process into modular components: a test bed frame for securing devices, a hydraulic power station for load application, and a monitoring/control station for data acquisition. This modular segmentation enables efficient batch testing of multiple devices simultaneously, reducing overall testing costs while ensuring comprehensive compliance verification for every produced lift device.
2Productivity
If random numbers of lift devices are load tested, then some certification can be provided, but it does not guarantee that all produced lift devices satisfy regulatory standards
Solution Approach 1:
The test system incorporates automated monitoring and control stations that automatically acquire, record, and analyze test data without requiring manual intervention for each device. The system self-determines pass/fail criteria based on regulatory standards, enabling high-volume testing of every produced device while maintaining reliable compliance verification through consistent automated evaluation.
3Measurement precision
If a rigid testing structure is used, then accurate load application is achieved, but the complexity of the testing system increases
Solution Approach 1:
The test system employs a hydraulic power station with a hydraulic cylinder to apply controlled loads to lift devices during testing. The hydraulic system provides precise load application and measurement capabilities through fluid pressure control, achieving accurate measurement data while maintaining manageable system complexity through well-established hydraulic technology.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables cost-effective, comprehensive load testing of lifting devices, providing accurate certification and ensuring compliance with regulatory standards, thereby reducing the risk of fines and ensuring safety.
Implementation Method 1
The hydraulic power station includes a connecting line connected to a hydraulic cylinder in the power station at one end, and connectable to a test lift device at another end for applying a load to the test lift device
Implementation Method 2
at least one load sensor associated with the hydraulic cylinder for measuring a load applied to the test lift device
Implementation Method 3
At least one camera may be provided for visually recording a load test conducted on the test lift device
Data Source
AI summary
A load test system includes a test bed frame which extends horizontally along a first axis and includes two rolling beams moveably mounted securely in the test bed frame for being moved to desired position. The rolling beams have plural attachment locations for attaching a test lift device. A hydraulic power station is located spaced perpendicular from the test bed frame along a second axis and includes a hydraulic cylinder with a line connected to the hydraulic cylinder at one end, which is connectable to a test device at another end for applying a load when the test device is attached to the test bed. Beam members connect the hydraulic power station and the test bed frame to form a rigid structure.