A kind of remodeling sample preparation instrument for coarse granular soil medium shear instrument and method thereof

Abstract

The invention discloses a remolded sample sample preparation device for a medium-sized shearing device for coarse-grained soil and a method thereof. The sample preparation device comprises a shearing box, a frame, a sample moving component and a sample compacting component. The sample moving assembly includes a moving drive mechanism and a moving plate, and the shear box is arranged on the moving plate; the sample compaction assembly includes a lifting drive mechanism and a compaction mechanism, and the compaction mechanism includes a connected compaction guide rod and a compaction plate. and a guide part, the compaction guide rod can be disconnected from the lift part of the lift drive mechanism; the compaction route of the compaction plate is S-shaped. In the present invention, the shear box can move stably relative to the compaction plate under the drive of the moving drive mechanism, thereby completing the S-shaped compaction route of the compaction plate, that is, through stable movement and falling only by gravity (falling) The route is fixed, not easy to be deformed or changed), which ensures the compaction efficiency and compaction effect, and avoids the inconsistency of the falling action during the compaction process by manual use of the appliance, resulting in the inclined compaction of iron or wooden poles.

Description

technical field [0001] The invention relates to the technical field of geotechnical sample preparation instruments, in particular to a remolded sample preparation instrument for a medium-sized shearing instrument for coarse-grained soils and a method thereof. Background technique [0002] For the shear test of coarse-grained soil, a medium-sized direct shearing instrument is often used, but the soil sample size of the medium-sized direct-shear test is often relatively large. However, in the existing technology, when the experimenter prepares the sample, there is no relatively perfect sample preparation equipment to prepare the soil sample. In previous experiments, when preparing remodeling samples, hand-held heavy objects, such as iron pieces or wooden poles, were often used for continuous beating. First of all, hand-smashing large-sized soil samples is more labor-intensive and time-consuming. More importantly, the uniformity of the compaction of the soil samples cannot be ...

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Problems solved by technology

[0002] For coarse-grained soil shear tests, a medium-sized direct shear instrument is often used, but the sample size of the medium-sized direct shear test is often relatively large

However, in the existing technology, when the experimenters prepare samples, they do not have a relatively complete sample preparation equipment to prepare soil samples.

In previous experiments, when preparing remodeling samples, hand-held heavy objects, such as iron pieces or wooden poles, were often used for continuous hitting. However, in the process of manual smashing, there are many deficiencies. First of all, smashing large-sized soil samples by hand is more labor-intensive and time-consuming. More importantly, the uniformity of compaction of soil samples cannot be guaranteed. Ensure that the hand-held weight does not tilt every time it is dropped, and it cannot guarantee that the number of times each soil sample is compacted is similar

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