In-situ and indoor dual-purpose large clipper

Abstract

The invention relates to an in-situ and indoor dual-purpose large clipper. The clipper a mounting plate, an upper box, a lower box, a horizontal clipper system, a normal pressurization system and a pressure sensing mechanism; the upper box is in horizontal rolling connection with the mounting plate; the lower box is detachably and fixedly connected with the mounting plate; the upper box and the lower box are communicated with each other through the through hole; the horizontal clipper system is connected with the mounting plate and located in the horizontal movement direction of the upper box; the normal pressurizing system is connected with the mounting plate and is positioned right above the upper box; and the pressure sensing mechanism is connected with the upper box and located on one side of the horizontal clipper system. When the horizontal pushing shear system moves, a pushing lead screw of the horizontal pushing shear system does horizontal pushing motion and acts on the pressure sensing mechanism, and therefore the upper box is pushed to move horizontally in the shearing direction. According to the clipper provided by the invention, the size and the weight of each structure are effectively reduced while a large-scale clipper experiment is met, so that the experiment requirements of in-situ and ectopic scenes can be met.

Description

technical field [0001] The invention belongs to the technical field of civil engineering survey, and more specifically relates to an in-situ-indoor dual-purpose large-scale clipper. Background technique [0002] Today's existing in-situ or ex-situ measurement techniques are all aimed at brittle soil samples, and there are very few clipper equipment for non-brittle soil samples, and the existing clipper mechanisms are mainstream, small instruments (the weight of the instrument is less than 1 ton) The hydraulic cylinder is used to push the shears; large-scale instruments (the weight of the instrument is more than 2 tons) are driven to the cross bridge by two sets of electric servo screw rods to continuously push the shears. The mechanical strength cannot be satisfied under the weight; and the part of the clipper box is pushed into the upper box by the clipper mechanism. Under the experimental conditions, the soil of the upper box needs to be loaded with a normal pressure of at...

AI Technical Summary

Problems solved by technology

[0002] Today's existing in-situ or ex-situ measurement techniques are all aimed at brittle soil samples, and there are very few clipper equipment for non-brittle soil samples, and the existing clipper mechanisms are mainstream, small instruments (the weight of the instrument is less than 1 ton) The hydraulic cylinder is used to push the shears; large-scale instruments (the weight of the instrument is more than 2 tons) are driven to the cross bridge by two sets of electric servo screw rods to continuously push the shears. The mechanical strength cannot be satisfied under the weight; and the part of the clipper box is pushed into the upper box by the clipper mechanism. Under the experimental conditions, the soil of the upper box needs to be loaded with a normal pressure of at least 400Kpa, which means that for the upper box The structural strength requirements are very high. The existing equipment clipper box generally adopts an integrated structure design, which makes the weight of the upper box alone reach more than 50KG; because the small instrument does not meet the movement form of the clipper, resulting in non-brittle soil In-situ experiments cannot be carried out and can only be taken back indoors for ex-situ experiments. Even if in-situ experiments are performed, due to the strength of the instrument, the weight of the detachable unit components exceeds the weight that can be borne by human transportation under all-terrain conditions; It is cumbersome and heavy, which makes it impossible to carry out in-situ experiments even if the clipper experiment conditions for non-brittle soils are met

[0003] Chinese patent CN209513466U, with a publication date of 2019.10.18, discloses a directional low-friction self-balancing large-scale indoor direct shear instrument, but the device can only be used indoors and is not convenient for ex-situ measurement

Images