| 摘要 |
The invention relates to testing equipment and makes it possible to increase the range of control of variable loads on test specimen. The device for control of variable loads at fatigue bending test comprise a base on which electric motor, body with bearing unit are mounted, there main shaft is installed, its output end is connected to the electric motor, and gripper assembly, this holds the test specimen connected to loading head of variable loads. It has two bushings connected kinematically and installed concentrically one in another. The inner bushing is rigidly fixed on the main shaft, and the outer one is connected through compensation block to the loading head of variable loads, and by means of chain gearing to additional controlled autonomous motor. The invention makes it possible to increase functionality of the device for control of varying loads at sample fatigue bending test through control of value of bend amplitude of test specimen. |
