AXIAL LOADING TEST STAND Russian patent published in 1994 - IPC

FIELD: test equipment. SUBSTANCE: when drive 27 is energized frame 8 is set into movement through crank disk 28, pusher 29 and slider 30, the frame compresses spring 12 and axially loads specimen 4. Frame 8 through gears 19 simultaneously sets first additional frame 13 into movement, frame 13 compresses spring 13 and axially loads specimen 5. On reverse movement of slider 30 frame 8 together with frame 13 are held by electromagnetic lock 25, specimens 4 and 5 are loaded. When slider 30 acts on switch 23 frames 8 and 13 are released from locks 25 and under the action of springs 12 and 16 respectively sharply return back. At this moment frame 13 loads specimen 4 by shock compression, and frame 8 loads specimen 5 through frame 15 by shock compression independently of frame 13 due to slot 21 in each support 22. The loading of the specimens is repeated. EFFECT: improved structure. 1 dwg