Test device for researching rock-breaking dynamic characteristics of cutter under high-strain-rate load
A technology with dynamic characteristics and high strain rate, applied in measuring devices, strength characteristics, scientific instruments, etc., it can solve the problem of inability to fully understand the rock breaking laws of tools, few large samples, and inability to study the dynamic characteristics of rock breaking. and other problems, to achieve the effect of improving the design of drilling rigs, simple structure and wide application range
Inactive Publication Date: 2017-10-20
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
However, most of the studies are based on single static pressure experiments of various pressure heads intruding into rocks, dynamic rock breaking experiments with devices such as drop hammers or SHPB, and few rock breaking experiments with tools under high strain rate loads for large samples. It is impossible to study the rock-breaking dynamics of different sizes of specimens under high strain rate loads, so that it is impossible to understand the rock-breaking law of the tool more comprehensively
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[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] Such as figure 1 As shown, the present invention comprises a Hopkinson compression bar device, a sample support device and a cutter 10, and the Hopkinson compression bar device is composed of a high-pressure tank 6, a bullet 2, an incident rod 3, a strain gauge 5, an oscilloscope 7 and The transmission rod 4 is composed of the bullet head 2, the transmission rod 4 and the injection rod 3 coaxial, the bullet head 2 is connected with the high-pressure gas tank 6, and one end of the bullet head 2 is arranged near the end of the injection rod 3, and the other end of the injection rod 3 A tool 10 is installed at one end through a tool sleeve 9 , and a strain gauge 5 is respectively provided on the incident rod 3 and the transmission rod 4 , and the strain gauges 5 are respectively connected to an oscilloscope 7 .
[0018] The sample supporting device is placed betwe...
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The invention discloses a test device for researching rock-breaking dynamic characteristics of a cutter under a high-strain-rate load. The test device comprises a Hopkinson pressure bar device and a test sample supporting device, wherein the Hopkinson pressure bar device comprises a high air pressure tank, a bullet, an incident rod, strain gages, an oscilloscope and a transmission rod, the bullet, the incident rod and the transmission rod are coaxially arranged, the bullet is connected with the high air pressure tank, one end of the bullet is arranged close to one end of the incident rod, the cutter is arranged at the other end of the incident rod, and the strain gages are respectively arranged on the incident rod and the transmission rod and are respectively connected with the oscilloscope; and the sample supporting device is arranged between the cutter and the transmission rod. The test device is simple in structure and convenient to operate, can be used for well finishing rock-breaking dynamic characteristic tests of different cutters under the high-strain-rate load and has very important guiding significances to the research of rock-cracking mechanisms, the improvement of design of drilling machines and drilling tools and the search of new crushing techniques.
Description
technical field [0001] The invention relates to a rock dynamics test device, in particular to a test device for studying the rock-breaking dynamics characteristics of a cutter under high strain rate loads. Background technique [0002] In recent years, with the needs of social development and the continuous improvement of the level of science and technology, the development and utilization of underground space and various resources has become one of the areas of human focus. As mechanical rock breaking technology is widely used in mining, tunneling, geological exploration, oil and gas drilling and other process fields, it poses new challenges to the theory and technology of rock breaking. Intrusion rock breaking is the basic form of rock excavation and mechanical rock breaking, and the study of rock breaking mechanism in the process of tool invasion plays an important role in improving the efficiency of mechanical rock breaking. At present, scholars at home and abroad have ...
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IPC IPC(8): G01N3/307
CPCG01N3/307G01N2203/0067G01N2203/0044
Inventor 赵伏军李玉吴秋红叶洲元樊勇张孟举章思平
Owner HUNAN UNIV OF SCI & TECH