The phenomenon of poor anti-biasing ability of hydraulic universal testing machine

The hydraulic universal testing machine has poor anti-biasing ability, and the measurement error of large samples is large. Most existing universal testing machines have installed force sensors between the upper pressure plate and the cross beam. In the test, the preparation and placement of the test samples are very high. It is often possible to cause pressure measurement errors due to sample bias and irregularity, and the error is large, which affects the accuracy of the test results.

Based on the disadvantages of traditional equipment of hydraulic universal testing machines and the new market requirements for universal testing machines, we have developed a large-stroke universal testing machine. Its test space span is 1.6m×1.6m, and the test height is greater than 3.5m; the hydraulic universal test machine adopts wire rope winding and electromagnet pin automatic positioning structure; the pressure loading part adopts a lead screw transmission, and has high speed control accuracy; the pressure measurement system adopts a three-sensor structure, which can effectively avoid measurement errors caused by specimen bias and irregularity.

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