RU2780951C1 - Thermal loader to the stand for testing samples of materials - Google Patents

Abstract

FIELD: testing equipment.

SUBSTANCE: invention relates to means of testing samples of materials under complex loading and can be used in conjunction with stands for physical modeling of geomechanical processes on rock samples and equivalent materials. The thermal loader contains a base, a friction disk placed on it, a rotation drive with a shaft connected to a friction disk, a support platform made of heat-conducting material for placement on the sample and a device for mutual compression of the friction disk and the platform. The thermal loader is additionally equipped with two mutually perpendicular guides with longitudinal slots in which the shaft of the friction disk rotation drive is installed, a platform that is made in the form of a cylinder on which the friction disk rotation drive is installed, and a flexible rod, one end of which is fixed on the base, and the other end is wound onto the platform and fixed on it. Reversible drives are installed on the base, which are connected through screws with the possibility of moving the guides in mutually perpendicular directions, and additional guides are fixed parallel to the corresponding screws.

EFFECT: expansion of technological testing capabilities.

1 cl, 2 dwg

Description

The invention relates to testing equipment for material samples under complex loading and can be used in conjunction with stands for physical modeling of geomechanical processes on rock samples and equivalent materials.

Known thermal loader to the stand for testing samples of materials (patent RF, No. 1603224, publ. 10/30/1990), containing a base, a friction disk placed on it, a rotation drive with a shaft connected to the friction disk, a support pad made of heat-conducting material for placement on the sample and device for mutual compression of the friction disc and platform.

The disadvantage is that the thermal loader is in a fixed position. This does not allow testing when changing the thermal loading zone of the test sample during testing, which limits its technological capabilities.

Known thermal loader to the stand for testing samples of materials (RF patent, No. 1610382, publ. 11/30/1990), containing a base placed on it a friction disk, a rotation drive with a shaft connected to the friction disk, a support pad made of heat-conducting material for placement on the sample and a device for mutual compression of the friction disc and platform.

The disadvantage is that the thermal loader is in a fixed position. This does not allow testing when changing the thermal loading zone of the test sample during testing, which limits its technological capabilities.

Known thermal loader to the stand for testing samples of materials (RF patent No. 2367926, publ. 20.09.2009), containing a base placed on it a friction disk, a rotation drive with a shaft connected to the friction disk, a support pad made of heat-conducting material for placement on the sample and device for mutual compression of the friction disc and platform.

The disadvantage is that the thermal loader is in a fixed position. This does not allow testing when changing the thermal loading zone of the test sample during testing, which limits its technological capabilities.

Known thermal loader to the stand for testing samples of materials (RF patent No. 2593520, publ. 08/10/2016), containing a base placed on it a friction disk, a rotation drive with a shaft connected to the friction disk, a support pad made of heat-conducting material for placement on the sample and device for mutual compression of the friction disc and platform.

The disadvantage is that the thermal loader is in a fixed position. This does not allow testing when changing the thermal loading zone of the test sample during testing, which limits its technological capabilities.

Known thermal loader to the stand for testing samples of materials (RF patent No. 2714516, publ. 02/18/2020), taken as a prototype. The thermal loader contains a base, a friction disk placed on it, a rotation drive with a shaft connected to the friction disk, a support pad made of heat-conducting material for placement on the sample, and a device for mutual compression of the friction disk and the platform.

The disadvantage is that the thermal loader is in a fixed position. This does not allow testing when changing the thermal loading zone of the test sample during testing, which limits its technological capabilities.

The technical result is the expansion of the technological capabilities of testing.

The technical result is achieved in that it is provided with two mutually perpendicular guides with longitudinal slots, in which the friction disk rotation drive shaft is installed, a platform, which is made in the form of a cylinder, on which the friction disk rotation drive is installed, and a flexible rod, one end of which is fixed on base, and the other end is wound on the platform and fixed on it, and reversing drives are installed on the base, which are connected through screws with the possibility of moving the guides in mutually perpendicular directions, and additional guides are fixed parallel to the corresponding screws.

The device is illustrated by the following figure:

fig. 1 - side view;

fig. 2 - top view, where:

1 - base;

2 - friction disc;

3 - rotation drive;

4 - shaft;

5 - support platform;

6 - sample;

7 - device for preloading;

8 - bottom guide;

9 - top guide;

10 - longitudinal slot;

11- drive for moving the guide;

13 - platform;

14 - flexible traction;

15 - screw;

16 - additional guide;

17 - supports;

18 - polyhedron.

The thermal loader for the stand for testing samples of materials contains a base 1, on which a friction disk 2, a polyhedron 18, a shaft 4 connected to a rotation drive 3 are installed. supports 17 are installed, on which a device for preloading 7 is fixed on top.

The thermal loader is equipped with two mutually perpendicular lower guide 8 and upper guide 9, in each of which longitudinal slots 10 are made. In the slot 10, a rotation drive shaft 3 of the friction disk 2 is installed. moving the corresponding lower guide 8 and the upper guide 9 in mutually perpendicular directions. On the platform 13, a rotation drive 3 of the friction disk 2 is installed. On the base 1, additional guides 16 are fixed parallel to the corresponding screws 15.

Thermal loader works as follows. The rotation drive 3 is turned on and the friction disk 2 is rotated, as a result of which the section of the support platform 5 located in the zone of contact with the disk 2 heats up and transfers the temperature to the volume of the sample 6 located in contact with this section. The temperature level is regulated by the rotation speed of the disk 2 by the rotation drive 3 and the device 7 for pressing the disk. When transmitting torque from the rotation drive 3 to the disk 2, the rod 14 keeps the platform 13 from rotating both in a fixed thermal loading zone and in the process of moving to new zones. In the zone of elevated temperature, the corresponding physical and mechanical processes develop in the sample, for example, cracking with a corresponding weakening of the strength of this volume of the sample. To change the heat affected zone on the sample, drives 11 are turned on and guides 8,9 are moved in the given directions, as a result of which the shaft 4 moves along the slots 10 in the given direction together with the platform 13 and the rotation drive 3 located on it, the fixture 7 and the friction disk 2 The thermal load zone moves to a new section of the sample 6. The level of thermal load in each new zone is regulated by the speed of rotation of the friction disk and the weight of the load 7. Acting in this way, they investigate, for example, patterns of changes in physical and mechanical properties depending on the parameters of uneven heat treatment of materials , which is especially important when searching for new energy-efficient methods of destruction, in particular, rocks during mining.

The proposed device significantly expands the technological capabilities of testing by providing thermal loading both at a constant and at a change in the course of testing, the thermal loading zone of the test sample.

Claims (1)

A thermal loader for a stand for testing samples of materials, containing a base, a friction disk placed on it, a rotation drive with a shaft connected to the friction disk, a support pad made of heat-conducting material for placement on the sample, and a device for mutual compression of the friction disk and the platform, characterized in that it is equipped with two mutually perpendicular guides with longitudinal slots, in which the friction disk rotation drive shaft is installed, a platform, which is made in the form of a cylinder, on which the friction disk rotation drive is installed, and a flexible rod, one end of which is fixed on the base, and the other end is wound on the platform and fixed on it, moreover, reversing drives are installed on the base, which are connected through screws with the possibility of moving the guides in mutually perpendicular directions, and additional guides are fixed parallel to the corresponding screws.

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