SU108693A1 - Rubber Sample Tester - Google Patents

Description

The subject of the invention is a device for testing rubber specimens for alternating torsion and tension or compression, comprising a crank-crank mechanism, which torsions a specimen, a rocker arm with a movable weight for loading a specimen with an axial force of a given value and a base for placing the specimen with grips.

of this type already

Devices are known.

However, the invented device differs from the known ones in that it provides the ability to change the sample twist angle during operation without stopping the test. This is achieved by the fact that the carriage carrying the frame of the device is movable.

The design of the described device is schematically shown in the drawing. The device consists of a crank drive crank mechanism, 2, 3, guides 4, rocker arms 5 with a movable weight 6, clamps 7, 8, in which a rubber specimen 9 is fastened, and a movable carriage 10 carrying the device frame 11.

The movement of the carriage provided by the rotation of the handwheel 13 changes the distance between the finger 14 and the shaft 15, which, with a constant stroke of the slider 3, increases or decreases the sample twist angle during operation without stopping the test.

Subject invention

A device for testing rubber specimens for alternating torsion and stretching or compression, containing a crank mechanism, which twists the specimen, a rocker with a mobile weight for loading the specimen with an axial force of a given value and a base for placing the specimen with grips, characterized in that The purpose of changing the twist angle of the sample during the testing process is that the base is made in the form of a carriage, which is adjustable relative to the slider of the curved mechanism.