Rock wear-resisting tester

Abstract

The invention discloses a rock wear-resisting tester which comprises a rock grinding amount testing part and a rock needle penetration testing part, wherein the rock grinding amount testing part comprises a grinding disc, a first weight, a first three-jaw chuck, a rolling ball, a reading meter, an inductance waterproof flexible displacement meter, a first motor, a main bracket and a chassis; the rock needle penetration testing part comprises a secondary bracket, a fixed frame, a second three-jaw chuck, a needle valve, a transmission block, a second weight, a second motor, a transmission shaft, a telescopic probe and a wiping plate. The rock wear-resisting tester has the beneficial effects of testing the grinding amount of a rock end plane in real time while realizing that the needle penetration on a rock line is tested, so as to more completely analyze the relation between the hardness and the wear-resisting performance of rock. A range represented by the abrasion amount of the rock end face is more than the linear range of the needle penetration, thus the representation to the rock is stronger.

Description

technical field [0001] The invention relates to a rock wear-resistant tester, which belongs to the technical field of rock property testing. Background technique [0002] In order to test the penetration of rocks, the CERCHAR wear test is mainly used in the world. The method is: a steel needle with a cone angle of 90 degrees is covered with a 7Kg weight, and the needle tip acts on the smooth surface of the rock. , move 10mm along the horizontal direction at a speed of 10mm / min, remove the steel needle, and test the width of the needle tip, the unit is 0.1mm, which is the wear resistance index of Secha. Secha wear resistance index is a very important design index in tunnel excavation and mining, but there is currently no test instrument for Secha wear resistance index in China. [0003] Although the Secha wear test is a widely used test method for rock wear resistance, there are still many deficiencies in the commonly used test instruments in the world: the control of the ho...

AI Technical Summary

Problems solved by technology

[0003] Although the Secha wear test is a widely used test method for rock wear resistance, there are still many deficiencies in the commonly used test instruments in the world: the control of the horizontal moving speed of the steel needle is manual, which increases the variability of the experiment; The measurement of the width of the steel needle tip relies on microscopic measurement, which has limited accuracy and is inconvenient; it cannot record the characteristics of rock dents, which is not conducive to the analysis of the wear-resistant mechanism; it cannot record the force value and displacement value of the steel needle when it moves horizontally, which is not conducive to the analysis of the wear-resistant mechanism ; Cannot dynamically record the experimental process data, which is not conducive to the analysis of the experimental process

Its shortcoming is that it cannot record the displacement change process of the steel needle penetrating into the rock; it only tests the wear resistance of the rock along a certain straight line, but fails to test the wear resistance of the rock flat surface.

Images