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Lever fixing device applied to high-pressure consolidation instrument

A technology of fixing device and consolidation instrument, applied in measuring device, using stable tension/pressure test material strength, instrument and other directions, can solve the problems of error, affecting the accuracy of test data, etc., to meet the requirements of fixation, simple structure, high intensity effect

Pending Publication Date: 2019-05-07
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

Due to the loading and unloading in a high-pressure environment, the weight weighs hundreds of kilograms. When the weight is increased or decreased, an obvious impact load will be generated on the soil sample in the pressure chamber, which will cause errors in the measurement of the volume change characteristics of the bentonite sample and affect the accuracy of the test data. Accuracy

Method used

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  • Lever fixing device applied to high-pressure consolidation instrument
  • Lever fixing device applied to high-pressure consolidation instrument

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Embodiment

[0018] A lever fixing device for a high-pressure consolidation instrument mainly includes a rectangular groove 12, a sliding groove 13, a high-strength round rod 14, a cross rod 15 and a screw rod 16. Wherein, the rectangular groove 12 is located at the center of the column 2, and the sliding groove 13 is evenly arranged on both sides of the rectangular groove 12; the height of the rectangular groove 12 and the sliding groove 13 is between the upper limit 9 of the lever and the lower limit 10 of the lever; , the high-strength round rod 14 is always located between the cross bar 15 and the lever 4; the screw 16 penetrates the two ends of the cross bar 15, the screw 16 moves up and down in the sliding groove 13, and can be screwed with the nut at any position to fix the effect.

[0019] The fixture is used as follows:

[0020] (1) put the pressed soil sample into the pressure chamber 7, and cooperate with the connecting rod 8;

[0021] (2) Unload the weight 5, adjust the posit...

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Abstract

The invention belongs to the field of geotechnical engineering test, and particularly relates to a high-pressure consolidation instrument lever fixing device which is used for preventing impact load of a lever at the time of weight increasing or decreasing and improving the test accuracy. The device comprises a base (1), columns (2), a bearing stage (3), a lever (4), a weight (5), a counterweight(6), a pressure chamber (7), a connecting rod (8) and a fixing device (11). The lower ends of the two columns (2) are fixed on the base (1). The bearing stage (3) is fixed on the upper ends of the twocolumns (2). The pressure chamber (7) is arranged on the bearing stage (3). The connecting rod (8) passes through the pressure chamber (7) and the bearing stage (3) and is connected with the lever (4). The counterweight (6) is arranged on one end of the lever (4), and the weight (5) is arranged on the other end. The fixing device (11) is arranged on the column (2) close to the weight.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering tests, and in particular relates to a lever fixing device for a high-pressure consolidation instrument. Background technique [0002] In order to simulate the volume change characteristics of high-compacted bentonite, the buffer material in the geological repository of high-level radioactive waste, it is necessary to carry out consolidation tests under high-pressure environments. The high pressure consolidation instrument is mainly used to study the volume change characteristics of unsaturated soil. The loading system adopts a lever-type loading device, and the vertical pressure is loaded and unloaded on the soil sample in the pressure chamber by increasing or decreasing weights. Due to the loading and unloading in a high-pressure environment, the weight weighs hundreds of kilograms. When the weight is increased or decreased, an obvious impact load will be generated on the soil sample in t...

Claims

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Application Information

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IPC IPC(8): G01N3/14G01N3/02
Inventor 刘月妙曹胜飞谢敬礼高玉峰
Owner BEIJING RES INST OF URANIUM GEOLOGY
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