Agricultural material dynamic characteristic test apparatus and method

A technology for mechanical properties and test devices, which is applied in measurement devices, strength properties, scientific instruments, etc., can solve the problems of inappropriate structure, significant differences in engineering materials, technical parameters and sensor accuracy cannot meet the measurement requirements, and achieve accurate experimental, high precision effect

Inactive Publication Date: 2008-07-09
JIANGSU UNIV
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Problems solved by technology

[0003] Existing test devices for mechanical properties of materials are generally used in engineering materials, and their technical parameters and sensor accuracy cannot meet the measurement of mechanical property parameters of agricultural materials; at the same time, the structure of agricultural materials has its own characteristics and various types. It is significantly different from

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  • Agricultural material dynamic characteristic test apparatus and method
  • Agricultural material dynamic characteristic test apparatus and method
  • Agricultural material dynamic characteristic test apparatus and method

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Embodiment Construction

[0024] As shown in Figure 1, the left and right brackets 2 are erected on the left and right sides of the base 13, and the uppermost crossbeam 1 above the left and right brackets 2 is fixedly connected. On the lower crossbeam 12, the moving crossbeam 4 is installed between the upper crossbeam 1 and the lower crossbeam 12 and connected with the left and right brackets 2 to form a base frame. The moving beam 4 can move up and down in the left and right brackets 2 to obtain stretching and compression strokes, and the stroke is controlled by the upper and lower limit blocks; the force sensor 5 is installed on the moving beam 4 through the sensor connecting rod 3, and then the pin 7 and the upper joint 6 connect the upper chuck 8 with the force sensor 5; the force sensor 5 adopts a small-range, high-precision sensor, and its test force measurement range is 2 to 500N, and the measurement accuracy is ±0.5% of the indicated value , the resolution is 1 / 240000. To replace the collet, y...

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Abstract

The invention discloses a device and a method for testing mechanical characteristics of agricultural materials. The device comprises a frame, a transmission system, tester accessories, and peripheral terminal equipment, wherein the transmission system is connected with one side of a movable cross-beam; and the peripheral terminal equipment includes a control main board, a display panel, a computer and a printer. The method comprises the following steps of: selecting corresponding test devices according to different requirements of tensile test, compression test, bend test and shear test; calibrating a force sensor and starting the tester and the computer; loading and recording a test sample; and inspecting the test parameter setting and checking to determine whether the test sample is valid. The invention can achieve accurate test of mechanical characteristics of agricultural materials by adopting small-range and high-accuracy force sensor, and the test device special for tensile test, compression test, bend test and shear test is designed. The test device and the software thereof are designed to achieve repeated loading of the materials, thus obtaining low-cycle mechanical characteristic data of agricultural materials.

Description

technical field [0001] The invention relates to a test device for the mechanical properties of agricultural materials, which is mainly used for stretching, compressing, bending, shearing, tearing, etc. Mechanics test and analysis. Background technique [0002] With the development of agricultural science, the research on the mechanical properties of agricultural materials has been paid more and more attention by researchers. The connection force between grains and stalks of agricultural crops is directly related to the difficulty of detaching the grains from the ears of agricultural crops and the shattering loss during threshing; The connection force between them is closely related to the stalk rate in the process of rice threshing. Therefore, the size of the connection force between the various parts of agricultural crops not only has a great relationship with the harvest loss and power consumption of the crops, but also has a great influence on the stalk rate of the grai...

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Application Information

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IPC IPC(8): G01N3/00
Inventor 李耀明徐立章马朝兴李洪昌
Owner JIANGSU UNIV
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