SU1305565A1 - Device for compression testing of particulate materials - Google Patents

Abstract

The invention relates to the dynamic study of soils and is intended for the laboratory study of the compression compression of dispersed materials under the action of various kinds of cyclic loads. The aim of the invention is to expand the field of research. The device comprises a platform 1 with posts 2, on which chamber 3 is placed for a soil sample. A stamp 4 is placed on the soil sample with guide 5 and inertial load 6 coaxially placed on it, spring-loaded relative to the drive shaft 7. Guide 5 and supports 2 are passed through the drive shaft 7. Racks 2 are rigidly fixed on the shaft 7. 1 Il. (L y -8 / 7 and rWXk / s IICOiOO about ate JV O5 JV

Description

The invention relates to the dynamic study of soils and is intended for the laboratory study of the compression compression of dispersed materials under the action of various kinds of cyclic loads.

The purpose of the invention is to expand the scope of research by creating a periodically varying cyclic load.

The drawing shows a device for compression testing of dispersed materials, general view, section.

The device contains a platform 1 with

ten

6 and with racks 2, after having passed the guide; 5 into the hole 9 of the drive shaft 7. Install the gauge 13 and take the first readout from it. Rotation of the drive shaft 7 creates a certain dynamic load on the soil sample.

At each revolution, a harmonic cyclic load will act on the sample, the weight of the load being determined and the speed of rotation can vary in a practically unlimited range.

If it is necessary to create cyclists 2, chamber 3 for a sample of a ground impulse load, rotation is placed on platform 1, perforated stamp 4 connected to guide 5 which is installed along the device axis Coaxially guide 5, inertial load 20 6 is placed freely moving along the guide 5 and interacting with the perforated stamp 4, the device is equipped with a drive shaft 7 with holes 8 and 9 through which the guide 5 and the stands 2 are passed, the stands 2 being fixed on the drive shaft 7 through nuts 10 and on the platform 1 by means of nuts 11. The inertial load 6 is spring-loaded relative to the drive shaft by a spring 12. The device is equipped with a meter 13,

The device for compression testing of dispersed materials works as follows.

25

thirty

35

chambers with a sample perform irregularly with periodic short-term stops.

During the tests, the readings of the meter 13, characterizing the compression properties of the test material under the action of cyclic loading, are taken.

Claims (1)

Invention Formula A device for compression testing of dispersed materials, including a platform with racks and chambers for a soil sample, placed on it, a perforated stamp, inertia load and a spring, characterized in that, in order to expand the field of research by creating a periodically varying cyclic load ,, it is equipped with a guide, drive shaft with holes, the guide is placed along the axis of the device and connected to a perforated stamp, the inertial load is coaxially placed on the guide with the possibility The vertical movement is along it and is spring-loaded with respect to the shaft, the guide and the supports are passed through the apertures of the shaft, the latter being fixed on it. The sample of the test dispersed. material, such as soil, is placed in the housing and, putting wet filter paper, install a perforated stamp 4 onto it with a guide 5, on which inertial load 6 and a spring 12 are put on. Unscrew the nuts 11 securing the platform 1 with the uprights 2 and Camera 3 assembled with inertial loads is installed on it. Editor A. Kozoriz Compiled by L. Tronina Tehred L. Serdyukova Order 1422/41 Circulation 777 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4 6 and with racks 2, after having passed the guide; 5 into the hole 9 of the drive shaft 7. Install the gauge 13 and take the first readout from it. Rotation of the drive shaft 7 creates a certain dynamic load on the soil sample. At each revolution, the sample will have a harmonic cyclic load, determined by the value of the mass of the load and the speed of rotation, and the cyclicity can vary in almost unlimited limits. If necessary, create a cyclic pulse load rotation pulsed load rotation the sample chambers are irregular with periodic short stops. During the tests, the readings of the meter 13, characterizing the compression properties of the test material under the action of cyclic loading, are taken. Invention Formula A device for compression testing of dispersed materials, including a platform with posts and a soil sample chamber, placed on it, a perforated stamp, an inertial load and a spring, characterized in that, in order to expand the field of research by creating a periodically varying cyclic load, it is equipped a guide, a drive shaft with holes, the guide being placed along the axis of the device and connected to a perforated die, the inertial load is coaxially placed on the guide with The vertical movement is along it and is spring-loaded with respect to the shaft, the guide and the supports are passed through the apertures of the shaft, the latter being fixed on it. Proof-reader I. Erdeyi