POWER OF THE STAND DRIVE FOR TESTING SPRING STRAPS ON TARGET STRENGTH

The work is devoted to the search for ways to reduce the energy of the stands for testing the spring racks of the cultivator for fatigue strength. The mechanism of the drive in the form of a crank-rocker mechanism is considered, where a spring stand serves as a yoke. An expression is obtained for determining the maximum instantaneous power under cyclic loading. The dependence on the dynamic characteristics of the elastic link is noted. The spectrum of the natural frequencies of the rack is determined. The dependence of the power of the drive motor on the rotational speed is determined experimentally. It is established that the minimum power per drive is obtained if the frequency of rotation coincides with the natural frequency of the spring column. The conclusion is made about the need for the drive to work in resonance mode with a spring post.