BED FOR TENSILE TESTING OF MATERIALS Russian patent published in 1997 - IPC

FIELD: testing equipment. SUBSTANCE: bed includes frame carrying loading mechanism in the form of active and passive grippers to take sample, lever coupled with one end to active gripper and with other end - to limit switches. Bed has two mechanisms 2 and 3 of loader, each being manufactured in the form of bushings 4 and 5 and lead screw 12 with two nuts 6 and 7 on its end mounted coaxially, heater built into one of bushings 5 and two mechanisms to turn nuts. Each mechanism to turn nuts is fabricated in the form of flexible tie 8, 9 passing over pulley. One end of it is wound on proper nut, the other - is coupled to load 10 and 11. Each nut is intended for resting against corresponding bushing. Bed also has cross-piece mounted for translation in parallel to axis of lead screw. Its ends are coupled to corresponding ends of lead screws of loaders 2 and 3 and its middle part - to active gripper 14 of sample 16. EFFECT: enhanced operational reliability and efficiency of bed. 1 dwg