新闻稿（翻译）
在建筑工地、矿料场或港口，需要使用液压挖掘机、采矿卡车和重型搬运机器快速、可靠和安全地搬运大量材料通常。然而，为了确保它们的可靠运行和长期承受极端条件，利勃海尔需要非常精确地测试其机器和组件的承载能力和使用寿命。
利勃海尔研发和测试中心的测试工程师Nils Dippon表示:“在负载测试中，我们让挖掘机的液压可调臂等组件在几周内完成承受挖掘机整个寿命周期的循环负载。
为了在德国Kirchdorf的现代试验台进行复杂的系列结构测试，利勃海尔依靠来自Hottinger Brüel & Kjaer的U10M和S9M力传感器和应变仪。例如，使用U10M传感器测量产生的力并补偿弯曲力矩，而HBK的应变片则同时测量组件上的应变。
“我们的U10M系列力传感器在很宽的测量范围内可实现非常高的精度。它们为利勃海尔的各种测量装置提供高分辨率的测量数据，并提供最大的灵活性。HBK力传感器产品经理Thomas Kleckers解释说:“我们的高质量应变仪还可以精确地获取最小的组件变形，为进一步的开发提供全面的数据基础。”
利勃海尔是大型液压挖掘机和矿用卡车的世界知名领先制造商之一。
Press release
Testing in extreme conditions
Liebherr relies on HBK force sensors for structural testing of excavators
Darmstadt, February 2021
Moving a large mass of material quickly, reliably and safely usually requires the use of hydraulic excavators, mining trucks and material-handling machines at construction sites, scrapyards or ports. However, to ensure that they function reliably and withstand extreme conditions in the long term, Liebherr tests the load-carrying capacity and service life of its machines and components very precisely.
"In our load tests, we subject assemblies, such as a hydraulically adjustable boom, to the load an excavator normally experiences over its entire life in just a few weeks," says Nils Dippon, a test engineer at Liebherr's development and demonstration centre.
For the complex series of structural tests in the modern test stand in Kirchdorf, Germany, Liebherr relies on the U10M and S9M force sensors and strain gauges from Hottinger Brüel & Kjaer. The U10M sensors, for instance, measure the forces produced and compensate for bending moments in doing so while the strain gauges from HBK simultaneously measure the strain on the components.
"Our U10M series force transducers achieve very high precision over a wide measuring range. They provide high-resolution measurement data for the various measurement setups at Liebherr and offer maximum flexibility. Our high-quality strain-gauge technology also accurately acquires minimal component deformations to provide a comprehensive data basis for further development," explains Thomas Kleckers, the product manager for force sensors at HBK.
Liebherr is one of the world's leading manufacturers of hydraulic excavators and mining trucks that meet the highest demands.
You will find more information about this application at
https://www.hbm.com/en/9341/structural-testing-of-excavators-and-dump-trucks/
End
About HBK – Hottinger Brüel & Kjær
For many decades, HBM and Brüel & Kjær have been trusted by multiple industries to deliver highly accurate technologies and expertise in testing and measuring and sound and vibration, respectively, HBM as the market leader in testing, measuring and analysis and Brüel & Kjær as the world’s leading solution provider for measuring and managing sound and vibration.
The two companies have joined forces as HBK – Hottinger Brüel & Kjaer – to form the world’s foremost provider of integrated test, measurement, control, and simulation solutions.
For more information, please visit www.hbkworld.com
