A rock axial sine cosine loading and unloading uniaxial testing machine device
A uniaxial test, loading and unloading technology, used in measuring devices, using repetitive force/pulse force to test the strength of materials, instruments, etc., can solve the problem of imperfect loading form, incomplete test results, unable to truly reflect the rock failure form, etc. question
Active Publication Date: 2020-12-11
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0003] In order to solve the problem that the loading form of the traditional experimental device is not perfect, resulting in incomplete test results and unable to truly reflect the rock damage form, the present invention provides a rock axial sine-cosine loading and unloading uniaxial testing machine device
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[0029] combine Figure 1 to Figure 7 The present invention is further described, a rock axial sine cosine loading and unloading uniaxial testing machine device, comprising a test frame 1, a constant force loading and unloading device, a variable force loading and unloading device and a computer data acquisition system 13, and the test frame 1 includes The frame base 27 and the frame top plate 26 fixed by four side columns, the middle part of the frame top plate 26 has a through rectangular through hole 28, and the constant force loading and unloading device includes a hydraulic support 9, a lower pressure plate 3, and a hydraulic pump installation platform 4 and hydraulic pump 20, the lower end of hydraulic support 9 is fixed on the frame base 27, the upper end of hydraulic support 9 is fixed with hydraulic pump installation platform 4, the upper part of hydraulic pump installation platform 4 is provided with lower pressure plate 3, and hydraulic pump 20 is fixed on the hydraul...
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Abstract
The invention relates to the technical field of uniaxial tester devices, and in particular relates to an axial sine and cosine loading and unloading uniaxial tester device for a rock, which solves theproblem that the damaging form of the rock cannot be truly reflected as the test result is incomplete as the loading form of a conventional experimental device is imperfect. The device comprises a test rack, a constant force loading and unloading device, a variable force loading and unloading device and a data acquisition system. By adopting the variable force loading and unloading device, a rotary disc is driven by a motor to perform constant-speed circling motion, so that a spring connecting rod hinged to the rotary disc can reciprocate up and down along with the rotary disc so as to applya variable force with sine and cosine properties in the vertical direction to an upper pressurizing plate; the stressed damaging form of the rock under an original formation condition and in a miningand unloading process can be simulated effectively. The device is simple in structure and convenient to operate, and has wide practicality in the technical field.
Description
technical field [0001] The invention relates to the technical field of uniaxial testing machine devices, in particular to a rock axial sin-cosine loading and unloading uniaxial testing machine device. Background technique [0002] With the development and utilization of mineral resources in our country, it has important guiding significance for the study of rock failure forms and production. The traditional uniaxial compression test mainly measures the uniaxial compressive strength of the rock specimen, provides an axial force on the specimen, slowly pressurizes until the specimen is destroyed, and records the stress and strain data at a certain To some extent, it can show the denaturation characteristics of the rock, but the loading method and stress situation are single, and the conclusions drawn by ignoring many practical factors are relatively limited. However, in actual situations, the surrounding rock of the roadway or the rock existing in the formation is affected by...
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IPC IPC(8): G01N3/36
CPCG01N3/36G01N2203/0005G01N2203/0048G01N2203/0252
Inventor 徐乐华郭栋杨希强赵富强姜海纳徐学聪张克张文皓徐振元冯国瑞崔家庆宋诚胡胜勇李振高强
Owner TAIYUAN UNIV OF TECH