SU1516859A1 - Installation for testing specimens for strength - Google Patents

Abstract

The invention relates to facilities for testing material strength samples and allows for the expansion of types of shock loading by performing impact interactions between samples in an arbitrary order of collisions and directions of movement of samples. On housing 1 there are two concentrically mounted annular platforms 2, 3 with drives for counter-rotating platforms, levers 6-9 on bushings 10, grips 11 for samples 12-15. Each lever has two electromagnetic locks 16, 17, designed to interact with platforms 2, 3, respectively. When the latches are turned off, the drives are turned on, the platforms are brought into reverse rotation. Include one of the clamps on one lever and the other latch on the adjacent lever. This leads to a counter-movement of the levers and the impact of the samples. In order to carry out a successive collision between all the samples, one of the clamps on one of the levers is turned on and by turning this lever through 360 °, a collision is performed between all the samples in the group. By switching the latches, the direction of movement and the order of collisions of the samples are changed. 2 Il.

Description

nnu rtagov and collision samples. In order to carry out a successive collision between all the specimens, one of the clips is clamped on one of the levers and by turning this lever

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360 ° impact is performed between all samples in the group. By switching the latches, the direction of movement and the order of collisions of the samples are changed. 2 Il.

The invention relates to installations for testing samples of materials for strength.

The purpose of the invention is the expansion of types of impact tension due to the implementation of impact interactions between samples in an arbitrary order of collisions and directions of movement of samples.

Figure 1 presents the setup diagram, top view; figure 2 is the same, side view.

The apparatus comprises a housing 1, two annular platforms 2 and 3 concentrically disposed thereon, drives 4 and 5 of counter-rotating platforms, levers 6 to 9 mounted on sleeves 10, and grippers 11 for samples 12 to 15 interacting with the levers.

The installation is equipped with electromagnetic clamps 16 and 17, placed on levers 6–9, with two clamps on each lever. Hubs Yu are mounted on housing 1 on the axis of rotation of the platforms, levers 6-9 are placed radially relative to the axis of rotation of platforms 2 and 3. Each latch

16 (17) is interoperable with a separate platform 2 or 3. The grippers 11 are fixed on the free ends of the levers 6-9.

The grippers are made in Q, in the form of sleeves, the hole in which is intended for placing samples 12-15. The counter-rotation of platforms 2 or 3 is carried out by two drives 1 and 4 and 5 by means of V-belt drives 18

The installation works as follows.

With clamps 16 and

17 includes actuators 4 and 5 and, by means of V-belt drives 18, drives platforms 2 and 3 into counter-rotation. To impact the specimens, for example 12 and 13, include a latch 16 on the lever 6 and a latch 17 on the lever 7. In this case, the lever 6 interacts with the platform 2 rotating counter-clockwise, and ry5

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five

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five

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chag 7 interacts with platform 3 rotating clockwise. This leads to a counter-rotation of the levers 6 and 7 and to a shock interaction between the samples 12 and 13. The clips are disengaged before the collision of the samples. For the impact of samples 12 and

15 is similarly used, the latch 17 on the lever b and the latch

16 on the lever 9. In order to carry out a series of collisions between all the samples, one of the clamps on the lever connected to the initiating sample is turned on, and by turning this lever 360 degrees, a collision is performed between all the samples in the group. The switching of the collision fixators is carried out with an opposite movement of the specimen, with one fixed specimen, with a change in the direction of the impact by changing the direction of the movement of the specimen initiating the collision. By acting in this way, repeated collisions between samples are carried out in accordance with the developed test program. The velocity of the collisions is controlled by the speed of rotation of the platforms 2 and 3 by the actuators 4 and

5. The collision order is changed by swapping the levers 6-9 on the axis of rotation with the sleeves 10, the number of interacting samples is controlled by the number of levers on the unit. The dimensions and power of the apparatus are determined by the dimensions and properties of the tested samples.

The installation allows testing under a complex loading program and changes the order and conditions of the interactions during testing in accordance with the development of the effect of repeated shocks on the mechanical characteristics of the samples.

Claims (1)

Invention Formula An installation for testing samples for strength, comprising a case, two concentrically mounted platforms, sleeves, levers fixed at one end on respective sleeves, specimen grips and a drive for counter-rotating platforms, with the aim of expanding impact types loading due to the implementation of shock interactions between the samples in an arbitrary order of collisions and directions re-editor S. Pekar Compiled by G.Savin Tehred A. Kravchuk Proofreader O. Kravtsova Order 6381/43 Circulation 789 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and publishing plant Patent, Uzhgorod, st. Gagarin, 101 Placing the samples, it is equipped with electromagnetic locks, mounted two on each lever and designed to interact with the respective platforms, sleeves are mounted on the housing so that they rotate relative to the axis of rotation of the platforms, the grips for the samples are mounted on the other ends of the corresponding levers, and both platforms are ring-shaped. Subscription