SU1629805A1

SU1629805A1 - Device to test materials for pure bending

Info

Publication number: SU1629805A1
Application number: SU894665245A
Authority: SU
Inventors: Михаил Дмитриевич Дубина; Юрий Васильевич Дряпочко; Валерий Александрович Локшин
Original assignee: Предприятие П/Я А-7840
Priority date: 1989-03-23
Filing date: 1989-03-23
Publication date: 1991-02-23

Abstract

Изобретение относитс к испытательной технике и может быть использовано дл испытани материалов на чистый изгиб. Цель изобретени - расширение формы испытуемых образцов. Устройство содержит Г-об- разный рычаг 1 и рычаг 2, при этом последний и полка 3 рычага 1 перпендикул рна оси т г 4, 5 испытательной машины. На стойке 6 рычага 1 и конце рычага 2 закреплены вкладыши 8, 9 дл креплени оболочки 7 вращени . Рычаг 2 при помощи шарнира 10 св зан с т гой 4. На т ге 5 перпендикул рно оси т г 4. 5 закреплены шариковые направл ющие 11, в которых установлена полка 3 рычага 1. На направл ющих I 1 со стороны т ги 4 закреплена направл юща втулка 12, в которой установлен конец т ги 4. При примыкании к т гам 4 и 5 осевого усили оболочка 7 нагружаетс п:-;- гибом, при этом полка 3 перемещае т в направл ющих 11. Свободное перемещение рычага 1 не вызывает дополнительных напр жений в оболочке 7, что позвол ет испытывать последнюю в услови х чистого изгиба и расшир ет форму испытуемых образцов. 2 ил. toThe invention relates to a testing technique and can be used to test materials for pure bending. The purpose of the invention is to expand the shape of the test samples. The device contains a G-shaped lever 1 and a lever 2, while the latter and shelf 3 of the lever 1 are perpendicular to the axis of the t 4, 5 test machine. On the rack 6 of the lever 1 and the end of the lever 2, the inserts 8, 9 are fixed to fasten the sheath 7 of rotation. The lever 2 is connected with a thrust 4 by means of a hinge 4. On a shaft 5 are perpendicular to the axis t g 4. 5 there are fixed ball guides 11 in which regiment 3 of levers 1 is mounted. On the guides I 1 on the side of the ty 4 it is fixed the guide sleeve 12, in which the end of the pull-rod 4 is installed. When adjacent to tam 4 and 5 axial force, the shell 7 is loaded with n: -; - bending, while the shelf 3 moves t in the guides 11. The free movement of the lever 1 does not cause additional stresses in the shell 7, which allows testing the latter under conditions of pure bending and extends form of test samples. 2 Il. to

Description

Фиг. 2FIG. 2

Claims

Claim

15 A device for testing materials for pure bending, containing loading means made in the form of levers pivotally connected to the corresponding rods of the testing machine, means for attaching the ends of the test specimen, attached to the ends of the corresponding levers, and means for measuring displacements, characterized in that, with the purpose of expanding the shape of the test samples by providing tests for clean bending of the shell 25 of the rotation check, one of the levers of the loading means is made L-shaped, its hinge connection with the corresponding The thrust of the test machine is made in the form of ball guides installed perpendicular to the axis of the thrust, in which the 30 free end of the L-shaped lever is placed, and the device is equipped with a guide sleeve coaxially with the rods, in which the thrust of the test machine is connected to the other lever .

Compiled by M. Matyushin Editor S. Baker Order 434 Tehred A. Kravchuk Corrector I. Erdeyi Circulation 387 Subscription

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