Pre-press bottom-pushing type test mold

A bottom-push, mold-testing technology, which is applied in the preparation, sampling, and measuring devices of test samples, can solve the problems of inconvenient mold removal, damage to the test piece, and poor water retention in the test mold, so as to achieve easy mold removal, reduce Damaged, uniform effect of vertical thrust

Active Publication Date: 2016-06-29
宁阳县鑫农农村发展有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the inconvenient demolition of the existing test mold, the test piece will be damaged when the form is removed, the top and bottom of the test piece are easy to los

Method used

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  • Pre-press bottom-pushing type test mold

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

[0037] A pre-pressing bottom-push type trial mold, comprising five top-pressing devices (1), upper trial-die body (2), lower-part trial die body (3), bottom-push device (4), and bottom-push threaded rod (5) The main components, the above-mentioned pressing device (1) is composed of three parts, and the three parts are integrally cast, wherein, the upper part is a round cake structure, and two round holes are symmetrically arranged on the round cake, and the two round holes are about the circle The center of the cake is symmetrical; the middle part is a solid cylinder structure, and the lower part is a hollow cylinder structure. The cross-sectional diameter is greater than the radial cross-sectional diameter of the lower hollow cylinder s...

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PUM

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Abstract

The invention relates to a test mold for manufacturing a test piece for testing basic mechanical properties of building materials and discloses a pre-press bottom-pushing type test mold. The test mold comprises a top pressing device, an upper test mold body, a lower test mold body, a bottom pushing device and a bottom-pushing threaded rod, wherein a test piece is arranged in the upper test mold body; the upper test mold body and the lower test mold body are in threaded connection; the bottom pushing device is arranged in the lower test mold body and performs mold stripping under axial force applied by the bottom-pushing threaded rod. Additionally, loads applied to the axial direction of the test piece is converted to loads on the edge of the test piece through a designed hollow cylinder structure transition zone; during mold stripping, pre-press force is applied to the upper part and the lower part of the test piece, so that the test piece can be slowly pushed out of the upper test mold body under the constrained condition, and the defects of edge missing and corner missing of the test piece can be effectively avoided during mold stripping in the structure design manner. The test mold is designed on the basis of optimization of a traditional test mold structure, is easy to strip, has good water retention performance, can be used for manufacturing test pieces made of different materials and in different sizes and has a wide application range.

Description

technical field [0001] The invention relates to a test mold for making test pieces for testing basic mechanical properties of building materials, in particular to a preloaded bottom push type test mold. Background technique [0002] When the laboratory studies the basic mechanical properties of various composite materials such as concrete and cemented sand, it is necessary to make corresponding test pieces through test molds. According to the material, sealing form and link form of the test mold, the test mold presents various However, no matter what kind of mold trial, it is necessary to consider whether it is convenient to remove the mold, whether it will damage the specimen when removing the mold, whether the top and bottom of the specimen are flat, whether the mold has good water retention, etc. . [0003] The trial molds retrieved at present only consider the above problems, but there are still many other problems, such as: (1) before concrete pouring, a layer of relea...

Claims

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Application Information

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IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 郑志涛徐颖徐轩娄培杰葛进进邵彬彬李成杰
Owner 宁阳县鑫农农村发展有限公司
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