Impact rock breaking mechanism testing device

Abstract

The invention discloses an impact rock breaking mechanism test device. The device comprises a punching hammer mechanism, a broken rock clamping assembly, a pre-pressure mechanism, a broken rock toothclamping mechanism, a rock sample fixing mechanism, a data acquisition system and the like, the punching hammer mechanism is located above the broken rock clamping assembly and right faces the brokenrock clamping assembly, and the impact work borne by broken rock is adjusted by adjusting the impact height and / or the impact hammer mass of the punching hammer mechanism; the broken rock clamping assembly finally changes the shape and size of broken rock by changing the shape of the first half clamp and the shape of the second half clamp, and therefore the broken rock suitable for drilling of a special stratum is selected. And the pre-pressure mechanism applies pre-pressure to the test rock sample to simulate a real rock breaking working condition. Impact energy can be adjusted by adjusting the mass and the impact height of the impact hammer, impact teeth of different specifications, sizes and shapes can be replaced, circumferential and axial prepressing of a rock sample can be tested, repeatability is good, the stress and crushing process of a rock sample test block can be monitored, and the rock crushing mechanism can be deeply revealed.

Description

Technical field [0001] The present invention relates to the field of study of the impact mechanism of rock broken, crushed rock and particularly to a mechanism and method of using the impact test apparatus. Background technique [0002] At present, research on the impact rotary drilling technology is more concentrated in the drill, but neglect to study the mechanism of broken rock, has yielded good results in the application of some of the formation, in other formations effect is not obvious. The impact load impact rock fragmentation theory, the resulting impact tool, the size of the force in a very short time to a large variation width memory, the impact of the hammer impact tool inside the anvil member column, another portion in the crash, and its role forces within tens of microseconds to surge from zero to several tons, and then after a few hundred microseconds down to zero again, this moment of great change in the magnitude of the force of rock samples to produce a shock wav...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the Chinese patent document with the authorized announcement number CN103645100B discloses a single-tooth single-shot rock crushing experimental device, which applies circumferential pressure to the cylindrical rock sample and does not apply axial pressure to the rock sample. The disadvantage that the clamping tool cannot restore the actual working conditions of the impact tool impacting the rock sample, the control method of the hammer drop is not clear, and the design of safety protection is lacking

[0004] In the prior art, the Chinese patent document with the authorized announcement number CN104142278B discloses a drop hammer type dynamic and static combined loading impact test device, which investigates the damage of the impact load to the rock sample under the axial static pressure state, and simulates the impact rock pressure For the destruction of the exposed rock formation, there is no preloading around the rock sample. The device uses a fixed-shaped hemispherical impact tooth, which cannot be replaced. The electric grapple is used to grab the hammer, and the structure is complicated. Data acquisition and processing system

[0005] In the prior art, the Chinese patent document with the authorized announcement number CN101738348B discloses a magnetic switch controlled drop hammer impact test bench to investigate the impact resistance of fiber concrete samples. No preload is applied, the impact component is a ball and cannot be replaced by impact teeth, and the test bench is not equipped with sensors, data acquisition and processing systems

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