Influences of Working Parameters on Performance of Elastic-Friction Seed-Metering Device

The influences of the two working parameters of elastic-friction seed-metering device—motion velocity (v) and rotate velocity (n) on CV of seeding uniformity in the lines (v1), CV of seeding consistency between the lines (v2) and CV of seeding rate stability (V) are analyzed by two factors quadratic orthogonal rotational combination experimental design. With DPS 9.50 data processing system these mathematical models are set up. There is a very significant regression between v, n and v1, v2, V and all factors are significantly at level α=1%. The results show range of v1 is at 3.0996%-5.8912%, range of v2 at 4.1105%-5.9297%, range of V at 1.6274%-2.8504% in the values range of the two factors.

Three Point Suspension Converter's Mechanical System and Elastic Friction Vibration Principle Analysis

Over the past three decades, three-point support/ suspension converter with brackets would cause abnormal sound and vibration while it tilted over certain angle, and engendered abrasion of bracket contact surfaces, this phenomenon increases mechanical maintenance cost and confuses lots of engineers. Through FEM analysis, three-point suspension converter’s over-constrained mechanical system and elastic friction vibration principle could be revealed, and then the solution proposal was raised. In the engineering practice, the solution proposal has been verified, and some conclusions of those theories have already been proved.