Non-contact type measuring method and structure for rubber covered roller of rice huller, and rice huller

Abstract

The invention provides a non-contact type measuring method for a rubber covered roller of a rice huller. The non-contact type measuring method comprises the following steps that capacitance is calculated and measured, a PLC acquires the measured current of a current loop formed by unit fixing pole plates and corresponding unit movable pole plates, the capacitance is calculated between the unit fixing plates and the corresponding unit movable pole plates according to the measuring current, and a measuring capacitor is obtained; and the thickness of a rubber layer is calculated, and the PLC calculates the thickness of the rubber layer according to the dielectric constant of the air containing chaff dust which is monitored by an air capacitance monitor, the measuring capacitor, and the distances between the unit fixing pole plates and the corresponding unit movable pole plates. The invention further relates to a rubber covered roller non-contact type measuring structure and the rice huller. According to the measuring method, two rubber covered roller shafts are ensured to be parallel, the optimal distance and the optimal speed difference of the two rubber covered rollers are achieved,the measuring error is small, the precision is high, and the unshelling rate and the yield are effectively improved.

Description

technical field [0001] The invention relates to the technical field of agricultural huskers, in particular to a non-contact measurement method and structure for rubber rollers of a husker, and a husker. Background technique [0002] Grain Husker is a very important machine in the modern grain and oil processing production environment, mainly used in grain husking production. The existing huskers cannot measure the rubber rollers in real time. In the actual production process, the huskers work for a long time, and the rubber rollers of the huskers wear very fast. Generally, the rubber rollers need to be replaced within three days. Timing gear shifting to ensure that the linear speed difference between the fast and slow rolls, and the linear speed sum remain unchanged. However, due to the timing shift and the gear speed cannot be adjusted steplessly, the optimal speed can only be approximately guaranteed at present. The existing huskers have the following drawbacks: At prese...

AI Technical Summary

Problems solved by technology

The existing huskers cannot measure the rubber rollers in real time. In the actual production process, the huskers work for a long time, and the rubber rollers of the huskers wear very fast. Generally, the rubber rollers need to be replaced within three days. Timed gear shifting to ensure that the speed difference between the fast and slow rolls, and the sum of the line speeds remain unchanged

However, due to the timing shift and the gear speed cannot be adjusted steplessly, the optimal speed can only be approximated at present.

The existing huskers have the following drawbacks: At present, the new generation of huskers relies on two synchronous hydraulic cylinders to drive one rubber roller to move closer to the other rubber roller, but it cannot guarantee that the axes of the two rubber rollers are parallel, and the movement distance error Large and imprecise; the fast roller makes the slow roller faster through the action of rice grains, while the fast roller slows down, and the instantaneous speed of the two rollers fluctuates, which has a serious impact on the shelling rate and output; due to the wear of the two rollers during operation , and the degree of wear of the radius of the two rollers will be different, resulting in a change in the relative linear velocity of the surface of the two rollers under the condition of constant speed

Images