Frequency and amplitude adjustable mud sample vibration device

Abstract

The invention relates to a frequency and amplitude adjustable mud sample vibration device which at least comprises a vibrating mechanism and a material loading and unloading mechanism. The sample vibration device also comprises an amplitude modulation mechanism and a frequency modulation unit, wherein the amplitude modulation mechanism comprises an amplitude modulation swing board, an amplitude modulation wedge block, an amplitude modulation handle, a lead screw, a lead screw support, an amplitude modulation support and an amplitude modulation scale; the frequency modulation unit is a stepping motor used for frequency modulation; the stepping motor is arranged on the amplitude modulation swing board; the vibrating mechanism comprises a belt, a belt pulley, a start vibration cam, an ejector rod, an impact rod and an impact block; the belt pulley is coaxial with the start vibration cam; the belt pulley is connected with the stepping motor through the belt; the belt pulley is embedded at one end of a sleeve on the right side of the amplitude modulation swing board; the middle of the sleeve is arranged on a wedge surface of the amplitude modulation wedge block; the material loading and unloading mechanism is positioned on the top of the whole device and at least comprises a material disc and a material disc bracket connected with the ejector rod and the impact rod. The dynamic characteristics of soil and dynamic load conditions needed by soil sample manufacturing are fully considered, and frequency modulation and amplitude modulation of mud sample vibration and vibration frequency control can be realized.

Description

technical field [0001] The invention belongs to the field of geological disaster model tests, and relates to a mud sample vibration device related to mud sample production in landslide physical model tests, in particular to a mud sample vibration device with controllable vibration times, adjustable vibration frequency and vibration amplitude. Background technique [0002] Landslides are a serious geological hazard worldwide. With the increasing frequency of human engineering activities, landslide geological disasters are becoming more and more frequent and causing more and more losses. In order to effectively prevent and control landslides, domestic and foreign scholars have conducted a large number of experimental studies on landslides, and landslide physical model tests are one of the effective research methods. The theoretical basis of landslide physical model test is similarity theory, in which the material similarity of soil samples plays a vital role in landslide physi...

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Problems solved by technology

[0004] There are various types of vibration devices in the prior art, but there are few vibration devices specially used for landslide physical model tests, which cannot meet the requirements of the test for the dynamic characteristics of the soil

The vibration device used for landslide physical model tests usually cannot take into account the functions of amplitude modulation, frequency modulation and vibration frequency control, or these functions are completed by complex electrical structures, which require high precision of mechanical structures and circuits, and weak stability

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