SU140600A1 - Device for installation in a test machine of Amsler type cylindrical form of concrete samples when tested - Google Patents

Description

Devices are known for installation in the Amsler-type test machine of the cylindrical shape of concrete samples when tested. However, such devices do not provide a symmetrical arrangement of the sample relative to the axis of the stock of the machine.

In the described device, the clamp fastened at the end of the rod is used to symmetrically position the test specimen relative to the axis of the machine stem. This collar is provided with earrings suspended on its consoles and articulated with a screw tie, carrying sponges (frames) fixed in the required position, covering the test sample from two sides and moving apart to the sides when the specimen is clamped between the pressure plate, and the cross member of the testing machine.

FIG. 1 shows the device: in FIG. 2, is a view along arrow A in FIG. one.

The device for installation of cylindrical concrete samples into the Amsler-type testing machine when they are being tested consists of a yoke 2 fixed on a machine 1, a yoke 3 suspended on brackets 4 yoke, a screw tie 5, an articulated yoke 3 and turning in bracket 6 with the help of the handwheel 7, and the frames 8, the position of which at the ends 9 of the earrings 3 are fixed by wing nuts 10.

Sample 11, which is to be tested by splitting, is placed on the pillow 12 of the machine cross member, after which the rotation of the handwheel 7 gives the sample a symmetrical position relative to the axis 13 of the stem / machine. When the handwheel 7 rotates, the straps 5 rotate with it, the ends 14 and 15 of which have threads 16 and 17 that are different in direction. Thanks to this, the earrings 3 approach each other, and the frames 8 move the sample 11 in the direction of the axis 13.

After the sample // takes the correct position on the cushion 12, the cushion} 2 with the sample // is lifted up and pressed down with a small amount of force to the pressure plate 18. Then, turning the handwheel 7 in the opposite direction, spread it towards the side of the frame 8 to protect them from damage during the test.

The described device makes it possible to improve the test procedure for determining the tensile strength of concretes, thereby obtaining more accurate results.

Subject invention

A device for installation in a test machine of Amsler type of cylindrical concrete samples during their testing, characterized in that, in order to ensure a symmetrical arrangement of the test specimen relative to the axis of the machine stem, a collar fastened at the rod end is used, equipped with consoles suspended on its arms and articulated with a pair of earrings, carried with a sponge (frame) fixed in the required position, encompassing the test specimen from two sides and moving apart to the sides when the specimen is clamped between the pressure plate th and pillow cross member testing machine.

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