Horizontal high-tonnage energy-saving fatigue experiment device

A technology for saving energy and fatigue experiments, applied in the direction of applying repeated force/pulsation force to test the strength of materials, etc., can solve the problems of low experiment frequency, high energy consumption, and long fatigue test cycle, and achieve the effect of energy saving

Inactive Publication Date: 2014-08-20
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

In addition, the fatigue test period is long, and generally millions of load cycles need to be completed. Due to the relatively low movement speed of the piston rod of the high-tonnage actuator, that is, the test frequency is low, and it takes about 10-20 days or more to complete one test. long
Therefore, the energy consumption required for the experiment is very high, which becomes an important part of the experiment cost

Method used

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  • Horizontal high-tonnage energy-saving fatigue experiment device

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Embodiment

[0021] Taking the 1000t fatigue testing machine as an example, carry out the 800±100t fatigue experiment, that is, the fatigue experiment of 800t average load and 100t sinusoidal pulsating load.

[0022] If a traditional dynamic fatigue testing machine is used, it is assumed that the required displacement of the actuator loaded from 700t to 900t is l , the cross-sectional area of ​​the cylinder of the 1000t testing machine is A , then the hydraulic oil flow required for each loading cycle is Q= lA . Calculated according to the design frequency of 1Hz and displacement of 1mm, the required hydraulic source motor power is about 500kw.

[0023] If the dynamic fatigue testing machine designed by the present invention is used, the tonnage is used as an electromagnetic loading device of 100t. During the fatigue test, ±100t loading is carried out on the basis of an average load of 800t.

[0024] Firstly, the sample 12 is loaded on the bracket, and the loading end of the cylinder pi...

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Abstract

The invention discloses a horizontal high-tonnage energy-saving fatigue experiment device which is applied to the field of mechanical design and metal material performance testing. The horizontal high-tonnage energy-saving fatigue experiment device comprises a shell, an actuating cylinder, an actuating cylinder piston rod, actuating cylinder oil inlet and outlet pipelines, hydraulic servo flow valves, a first energy accumulating device, a second energy accumulating device and an electromagnetic loading device, wherein the electromagnetic loading device comprises a soft magnet, an electric magnet, a load sensor, an electromagnetic loading actuating rod and an electromagnetic controller. According to the technical scheme, the electromagnetic loading device is combined with a conventional dual-output-rod high-tonnage fatigue testing machine, and thus the horizontal high-tonnage energy-saving fatigue experiment device is technically an innovation. In addition, after an average load required by a test is loaded on the high-tonnage actuating cylinder, the high-tonnage actuating cylinder is closed, the electromagnetic loading device is started, and electric energy is converted into magnetic energy which is then converted into kinetic energy by the electromagnetic loading device; compared with a mode of continuously using a large high-tonnage fatigue testing machine, the mode with the device has the advantage that energy sources can be saved by above 70 percent.

Description

technical field [0001] The invention relates to a high-tonnage large-scale fatigue experiment device, which belongs to the field of testing and analyzing metal materials or structural performance. Background technique [0002] With the rapid development of my country's economy, modern engineering is developing in the direction of large-scale, high safety, and long life. More and more new engineering components and engineering structures require experimental verification of strength and fatigue performance. Strength and fatigue testing of large and full-scale materials or components requires high-tonnage experimental equipment. Developed countries built a large number of high-tonnage strength test equipment in the 1960s and 1970s. my country has also developed rapidly in the development of large-scale strength test equipment in recent years. , A testing machine with a load capacity of 4,000 tons. It basically meets the needs of strength experiments for large materials or com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/36G01N3/38
Inventor 任学冲孙冬柏孙凤艳兰成明
Owner UNIV OF SCI & TECH BEIJING
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