Device and method for bulk granule collision falling point distribution and collision recovery coefficient measurement

Abstract

The invention relates to the field of agriculture, in particular relates to a bulk granule collision testing device. A device for bulk granule collision falling point distribution and collision recovery coefficient measurement comprises a material falling mechanism, a collision mechanism, a falling material collecting mechanism and an analysis mechanism, wherein the collision mechanism is positioned below the material falling mechanism, the material falling mechanism is used for placing a to-be-measured granule from a high place into the collision mechanism, and the material falling mechanism is provided with a material falling hole having a size matched with the size of the to-be-measured granule; the collision mechanism is used for colliding the granule flowing out from the material falling mechanism into the falling material collecting mechanism, the falling material collecting mechanism is positioned at the material falling place of the granule after collision, and the falling material collecting mechanism is used for separately collecting the granules coming out of the collision mechanism by; and the analysis mechanism is used for quantitative analysis of the granules in the material falling mechanism. The device and the method disclosed by the invention are convenient for collision falling point distribution and collision recovery coefficient measurement of bulk granules. The structure is simple, and the operation is convenient.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a device for testing bulk particles. [0002] The invention relates to the agricultural field, in particular to a bulk particle collision test method. Background technique [0003] The restitution coefficient of bulk particles can be defined by the ratio of the rebound velocity after impact to the velocity before impact, that is, e=V R / V, the physical meaning of particle collision restitution coefficient is to describe the energy loss before and after the collision. In the numerical simulation process of agricultural seeders (such as wheat seeders, soybean seeders), the collision recovery coefficient of bulk material particles (such as rice seeds, soybean seeds, wheat seeds) is one of the key parameters to describe the movement of particles. This parameter can easily calculate the velocity of particles after collision. [0004] Most of the existing technologies use high-speed camer...

AI Technical Summary

Problems solved by technology

This measurement method can only measure the average value of the particle collision restitution coefficient, and cannot measure the distribution value

A high-speed camera is used to track the trajectory of particles before and after the collision. The measurement accuracy is high during the measurement process, but the measurement cost is high, and the measurement efficiency is low when a single measurement wants to obtain the measurement value of a large number of particles; by detecting the signal generated by the collision, it can be accurately calculated. Calculate the collision time and calculate the collision restitution coefficient value, but still only a single particle can be measured, and the measurement efficiency is low when a large number of particles are to be measured

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