Inclined plane instrument device for measuring friction coefficient and friction angle of granular materials

Abstract

The invention belongs to the field of physical property detection of materials and particularly relates to an inclined plane instrument device for measuring the friction coefficient and the friction angle of granular materials on different material plate elements. Firstly, operators uniformly pave the granular materials to be measured onto a placed plate element, in addition, the included angle between the plate element and the horizontal plane is continuously increased until the materials on the plate element fall into a material collecting disc, and then, the friction angle or the friction coefficient is obtained through a measuring device. The device adopts a rocker mechanism and has a self locking function, and the measuring device comprises a circular arc ruler and a straight rule. Through the self locking function, the operators can release a rocker in experiments for intently regulating the sight line and observing readings. The fixed connection of the upper end and the lower end of the circular arc ruler and the straight ruler adopts a connecting plate with a certain thickness, and the warping in the vertical direction is avoided, so the measurement precision is ensured, and the effect of side plate reinforcing ribs is realized. The design of the material collecting disc at the lower part fully considers the requirements of multiple repeated experiments. The device has the advantages that the external connection of a power supply is not needed, and the device can be placed on the ground or a horizontal test table in a laboratory.

Description

Technical field [0001] The invention belongs to the field of detecting physical properties of materials, and particularly relates to an inclinometer device for measuring the friction angle and friction coefficient of bulk materials on plates of different materials. Background technique [0002] In the field of agricultural engineering, especially in the process of feed processing, the friction angle and coefficient of friction between granular materials and specific materials are important parameters for storage, transportation, and processing procedures. The evaluation of raw material characteristics, energy saving and consumption reduction in feed production, etc. all involve the measurement of friction angle and friction coefficient. [0003] The current method of measuring the coefficient of friction is to place the material on a tiltable plate. The angle at which the material just falls from the plate is the angle of friction, and the coefficient of friction can be calculated ...

AI Technical Summary

Problems solved by technology

The utility model patent "Friction Coefficient Tester" (application number 99251092.9) and the invention patent "non-particulate material friction angle tester" (application number 200510079351.7) use thread adjustment to adjust the angle between the tiltable plate and the horizontal plane. In the case of a large test volume, it is not conducive for the operator to perform repeated test operations while adjusting and observing

[0004] The utility model patent "A Friction Coefficient Measuring Device" (application number 201020149263.6) is mainly used for teaching demonstrations to students in physical experiments. It has good intuition, uses positioning pins as a way to adjust the inclination angle of the slope, and has poor continuity and small adjustment range. , so it is not suitable for experimental research

[0006] The invention patent "A device for testing friction and self-locking" (application number 200810218360.3) connects the angle meter, tension meter and displacement sensor with the computer, and can accurately obtain the relative sliding friction force of the test object, but the angle adjustment range of this method is small , requires the measured object to be uniform and continuous, not suitable for testing the friction properties of granular materials

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