| 摘要 |
An apparatus for preventing grain loss contains elastic blades located on a tube of worm between fingers and fastened to brackets with possibility of displacement in radial direction. The brackets are made in the form, which is described by an equation of logarithmic spiral: r = reA&phis;, where r- initial value of coordinate r, &phis; - polar coordinate, А - constant of logarithmic spiral, е - Napierian base. A rigid guard is made with side beads in the form which is described by equation of parabola:, where х, у - abscise and ordinate, α - angle of slope to the horizon of vector of initial speed Vof kernel at descending from the finger or elastic blade, g - acceleration of gravity. |
