FIELD: machine building.
SUBSTANCE: test bench for specimens with multi-point bend consists of frame, of specimen grippers mounted on frame, of guides, of hydro-cylinder in each guide, of pusher interacting with plunger of hydro-cylinder and of holder of pusher position on guide. A device for control of rate of pusher displacement is installed in each guide. The device is made in form of the hydro-cylinder with a working and compensating cavities, with a control of rate of flow of liquid from the working into compensation cavity, with the hydro-cylinder holder on the guide and with the plunger positioned in the working cavity and interacting with the pusher.
EFFECT: testing under new conditions facilitating unloading of specimen not only at rates of elastic recovery of specimen bend deformations, but also at statistic rates controlled within wide ranges.
1 dwg
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