Determination of productivity of conveyors of beet harvesters

Abstract

Conveyors are an integral part of the modern technological process, they set and regulate the pace of production, ensure its rhythm, increase productivity and increase output.

The design of scraper conveyors of beet harvesters is carried out mainly on the basis of accumulated experience and by successive approximations (design, testing, design adjustments, etc.).

One of the main requirements for the design of conveyors of beet harvesters is to ensure the quality of sugar beet root products when unloading them into the body of the vehicle. The operation of the conveyor depends on ten basic parameters, the variation of which gives tens of thousands of combinations. The trajectory of the fall of root crops during unloading by the conveyor is determined by the structural and kinematic and dimensional characteristics of the heap of root crops.

One of the most urgent tasks is to determine the formulas for calculating productivity, which depends on a number of design parameters of the conveyor, and on the dimensional characteristics of the heap of beet roots.

Methods of planning a complete factorial experiment were used for the study.

Regression dependences for large and medium-sized root crops are obtained, which must be taken into account to obtain the maximum productivity of beet harvesters.

Numerical analysis of the obtained regression dependences shows that in the studied AF the value of productivity is approximately directly proportional to the height of the scraper and inversely proportional to the angle of inclination of the web relative to the horizontal plane. The value of productivity nonlinearly depends on the speed of the conveyor, and for fixed values of the height of the scraper and the angle of inclination of the web productivity has a maximum at values of the speed of the conveyor > 1.4 m/s.