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Circulating single shaft dynamic load testing device with function of simulating tire load

A test device and tire load technology, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, can solve the problems of difficult to guarantee the accuracy of test results, inconsistent force conditions, and complicated test process, so as to achieve reliable preparation of measurement results , Accurate collection of deformation data, easy to use

Active Publication Date: 2012-06-13
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The existing test methods mentioned above are either inconsistent with the actual stress conditions, or the test cost is too high, or the test process is complicated, or the accuracy of the test results is difficult to guarantee

Method used

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  • Circulating single shaft dynamic load testing device with function of simulating tire load
  • Circulating single shaft dynamic load testing device with function of simulating tire load
  • Circulating single shaft dynamic load testing device with function of simulating tire load

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Embodiment

[0016] a kind of like figure 1 , figure 2 The cyclic uniaxial dynamic load test device of the present invention that can simulate the tire load is shown. The cyclic uniaxial dynamic load test device includes an environmental chamber 7, and a combined test mold 6 with variable thickness is placed inside the environmental chamber 7. A test loading device is correspondingly arranged above the test mold 6 . The test loading device includes a loading rod 10 connected to the testing machine, an indenter 3 and a displacement sensing device installed on the indenter 3 . A loading head 11 is provided at the end of the loading rod 10 , and the loading head 11 is threadedly connected with the main body of the loading rod 10 .

[0017] In this embodiment, the loading head 11 at the end of the loading rod 10 and the top of the indenter 3 are all provided with spherical crown grooves, and the loading head 11 passes through the spherical steel ball 2 placed between the aforementioned two...

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Abstract

The utility model discloses a circulating single shaft dynamic load testing device with function of simulating tire load, which includes an environmental box (7), wherein a test mold (6) is arranged in the environmental box (7); a test loading device is correspondingly arranged above the test mold (6); the test loading device includes a loading bar (10), a pressure head (3) connected to the end part of the loading bar (10) and a displacement sensing device mounted on the pressure head (3). The invention has the advantages of simple structure, stable working performance, high precision and convenience for use and operation.

Description

technical field [0001] The invention relates to a loading test device, in particular to a uniaxial dynamic load test device for simulating and analyzing tire load effects. Background technique [0002] Fatigue cracking and rutting caused by insufficient strength and high temperature stability of asphalt pavement structure and asphalt material (asphalt mixture) are common and harmful damage phenomena of asphalt pavement. At present, the evaluation of the high temperature stability of asphalt mixture in my country mainly adopts the rutting test of the plate specimen and the creep test of the cylindrical specimen. However, due to the lack of loading methods, stress distribution in the specimen and deformation data collection, the rutting test generally only It can be used as an engineering empirical simulation test for evaluating the high-temperature stability of asphalt mixture, but it cannot obtain the mechanical parameters of asphalt mixture, nor can it evaluate the high-temp...

Claims

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Application Information

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IPC IPC(8): G01N3/32
Inventor 周志刚杨银培曾勇袁秀湘
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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