Agricultural material impacting characteristic test apparatus and method

Abstract

The invention discloses an impact characteristics test device and a method of agricultural materials. A drop hammer penetrates, from top to bottom, through a guide wheel and a tripod, and a start mechanism is fixed with a guide wheel base. A positioning plate capable of adjusting height is arranged on the drop hammer; a test stage is disposed on the bottom of the tripod; the material to be tested is disposed on the test stage; a charge-type acceleration transducer is arranged on the bottom of the drop hammer; the output terminal of the acceleration transducer is connected with the input terminal of a charge amplifier; and the output terminal of the charge amplifier is connected with the input terminal of a signal collecting box and then connected with a computer. According to the invention, the drop hammer impacts the agricultural materials, the high-impedance charge-type acceleration transducer can acquire the impact response dynamic signals of the agricultural materials, the dynamic characteristic parameters such as dynamic yield force and dynamic disruption force during yielding and disruption of the agricultural materials can be obtained by analyzing the signals, thus providing basis for designing mechanical equipment for harvesting, processing, storing, etc. agricultural materials. The device has simple structure, convenient operation and reliable parameters.

Description

technical field [0001] The invention relates to a device and method for testing the impact characteristics of agricultural materials, which are mainly used for detecting the dynamic characteristics of rice, wheat, corn, soybean, rapeseed and other crop grains. Background technique [0002] The research on the collision characteristics of agricultural materials and the correlation between the collision characteristics and damage degree of agricultural materials can provide a scientific theoretical basis for the design of related equipment such as agricultural material harvesting, grading packaging and transportation, so as to reduce the mechanical damage in the production process of agricultural materials . Agricultural materials are essentially a biological system, which is different from engineering materials. Therefore, it is difficult to use theoretical analysis methods to study the dynamic mechanical properties of biological materials. Instead, experimental methods are o...

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Problems solved by technology

Agricultural materials are essentially a biological system, which is different from engineering materials. Therefore, it is difficult to use theoretical analysis methods to study the dynamic mechanical properties of biological materials. Instead, experimental methods are often used. However, the collision characteristics of agricultural materials have not yet matured and are generally applicable. experimental method

The patent number is ZL03141601.2, which is a method and device for detecting fruit firmness invented by Wang Jun of Zhejiang University. Calculation model to obtain fruit firmness, the defect of this method is: because it is knocked by pendulum, it is not suitable for small agricultural materials such as grain, and it is impossible to obtain parameter information such as dynamic yield force and dynamic rupture force

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