Control structure for automatically changing samples in closed high-pressure reaction chamber and automatic sample changing method

Abstract

The invention discloses a control structure for automatically changing samples in a closed high-pressure reaction chamber and an automatic sample changing method. The control structure comprises a worktable lifting mechanism, a bearing plate rotating mechanism and a bearing plate positioning mechanism, wherein the worktable lifting mechanism comprises a lifting rod; a supporting seat is arranged at the top of the lifting rod; the lifting rod is connected with a driving motor; the bearing plate rotating mechanism comprises bearing plates distributed in multiple layers, a rotating shaft framework and a rotating shaft control motor; each bearing plate is arranged on the rotating shaft framework; the bearing plates can rotate around the rotating shaft framework and the rotating shaft; the rotating shaft framework is fixed together with the rotating shaft and is connected with the control motor through the rotating shaft; a plurality of round holes and one opening are distributed in each bearing plate along the external circumference; each round hole is equipped with a bearing platform for placing a sample; positioning holes corresponding to the plurality of round holes are formed along the internal circumference of each bearing plate; the bearing plate positioning mechanism comprises a first positioning rod fixed at the top of a pressure chamber and a second positioning rod fixed at the bottom of the pressure chamber. According to the control structure and the automatic sample changing method disclosed by the invention, on the premise of not interrupting and not influencing a water-rock action in the pressure chamber, rock samples are automatically changed for a single-shaft or rheological compression test.

Description

technical field [0001] The invention relates to the field of rock mechanics tests in civil engineering, in particular to a control structure and an automatic sample changing method in a closed high-pressure reaction chamber. Background technique [0002] Rock mechanics test is an important means to study rock mechanics and engineering, and the key to rock mechanics test is to simulate the real stress state and environment of rock to the greatest extent. In actual engineering practice, a large number of geotechnical engineering problems need to understand the change law and mechanism of mechanical properties of rocks under immersion in various aqueous solutions and chemical solutions. Taking the Three Gorges Dam built and impounded as an example, with the adjustment of the reservoir water level in different seasons, the rocks on the bank of the reservoir continuously undergo water-rock interaction under different pressure conditions. Safety is of great importance. In order ...

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Problems solved by technology

At present, although scholars have conducted a lot of research in this area, the experiments or research based on this strict condition of existence are still blank for the time being, and there is no instrument that can realize this function.

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