Microcomputer-controlled electro-hydraulic servo universal testing machine

The invention relates to a microcomputer control electro-hydraulic servo universal testing machine which comprises a base, a lifting mechanism and a driving mechanism are installed on the base, an upper adjusting mechanism and a lower dragging mechanism are installed on the lifting mechanism, and the upper adjusting mechanism and the lower dragging mechanism are driven by the driving mechanism to ascend and descend along the lifting mechanism. When a sample is stretched, the direction of the lower jaw seat is pulled downwards, vibration to a testing machine when the sample is broken is thoroughly avoided through the damping mechanism, meanwhile, loud sound generated when the sample is broken is avoided, noise influence is avoided, protection of the testing machine is facilitated, and the service life of the testing machine is prolonged. 本发明涉及一种微机控制电液伺服万能试验机，包括底座，底座上安装有升降机构和驱动机构，升降机构上安装有上调节机构和下拽机构，上调节机构和下拽机构在驱动机构的驱动下沿着升降机构升降。本发明拉伸样品时下钳口座方向实行往下拽的方式，再通过减震机构，彻底避免了样品断裂时对试验机产生的震动，同时避免了样品断裂时爆发出的巨大声响，不仅免除了噪音影响，还有利于对试