Test piece mold release device for civil engineering tests

Abstract

A test piece mold release device for civil engineering tests comprises a base, a bottom plate and a support.The bottom plate is arranged on the base.A mold release device body is installed in the space between the bottom plate and the support and comprises a test piece cylinder positioning mechanism and a screw propelling mechanism.A test piece cylinder to be released from a mold is installed and positioned through the test piece cylinder positioning mechanism, deviation of a placing position of the test piece cylinder is eliminated, and the integrity of a test piece after mold releasing is ensured.The screw propelling mechanism rotationally propels a loading screw, and the test piece in the test piece cylinder is ejected out of the test piece cylinder.According to the test piece mold release device, electric operation and manual operation are integrated, physical strength consumption can be relieved, the mold releasing efficiency can be improved, and manual mold releasing can be adopted when outage occurs or a power source is not available; the ejecting travel of the loading screw is large, ascending and descending operation is consecutive, and the mold releasing efficiency is high; the whole device is simple in structure, convenient to operate, low in manufacturing cost and convenient to manufacture and maintain.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a demoulding device for a test piece used in civil engineering tests. Background technique [0002] Cylindrical specimens are often involved in civil engineering tests, such as concrete specimens, asphalt specimens, mixture specimens, cement-lime stabilized soil specimens, cement-lime stabilized aggregate specimens, etc. For soil engineering tests such as density and soil fetching, these specimens need to be taken out of the specimen cylinder with a demoulding device before the test. Most of the strippers currently on the market use the working principles of manual hydraulic jacks and electro-hydraulics. The disadvantages of these two strippers are: when the manual stripper is used to demould the test piece, the physical strength of the operator is exhausted. Larger, lower working efficiency; when electro-hydraulic demoulding, the single stroke of the jack ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a demoulding device for test pieces used in civil engineering tests, which uses the rotation of the loading screw instead of the hydraulic jack, which solves the shortcomings of the single stroke of the jack and poor continuity of operation; it adopts a combination of motor drive and manual operation , which not only reduces the physical exertion of the operator, improves the demoulding efficiency of the specimen, but also realizes the demoulding of the test specimen under the condition of power failure or no power supply; the positioning plate is set to eliminate the deviation of the placement position of the specimen cylinder , so that the entire demoulding process can be carried out continuously and smoothly, ensuring the integrity of the specimen after demoulding

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