Research of the work of the sieve mill of a grain-cleaning machine with a linear asynchronous drive

Abstract

<abstract> <p>This article presents the results of a study of the sieve mill of a grain cleaning machine with a drive based on a linear asynchronous motor instead of a classic mechanical drive. The purpose of this work is to describe the structural and technological parameters of a sieve mill with a linear asynchronous drive to implement a mathematical model of the technological process of a grain cleaning machine work. A kinematic study of the flat hinged mechanism of the sieve mill of a grain cleaning machine was carried out, for which all geometric dimensions are known and the laws of motion of the leading link - the electric drive of the sieve mill based on a linear asynchronous motor are determined. As a result, the following were determined: kinematic modes <italic>k</italic><sub><italic>P</italic></sub> > <italic>k</italic><sub><italic>B</italic></sub> > <italic>k</italic><sub><italic>H</italic></sub> of sieve mill vibrations under various technological conditions; laws of motion of all parts of the mechanism of the sieve mill, movement, speed (0.34... 0.36 m/s) and acceleration (5.8... 6.9 m/s<sup>2</sup>) of the driven links; a mathematical model of the kinematic scheme of a sieve mill of a grain cleaning machine with a drive from a linear induction motor has been developed. The use of a linear induction motor compared to existing (classical) drive designs as a drive of a sieve mill in a grain-cleaning machine significantly reduces the metal consumption of the structure (drive shafts, transmission mechanisms, connecting rods, bearings are excluded from the structure), and energy consumption is also reduced due to pulse drive operation; makes it possible in a wide range of technological parameters regulation for various crops, including various physical and mechanical parameters of the crop being cleaned.</p> </abstract>

Study of operation of four-screen shoes of grain-cleaning separators

“…The first scheme represents a sequentially installed separation screen B1 and a feeder screen B2 in the upper tier, and two cleaning screens C in the lower tier, the dimensions of the holes of which are equal to B1 = 3.0 mm; B2 = 3.6 mm, C = 2.0 mm. This scheme makes it possible to extract only large and small impurities from grain, so it can only be used for preliminary or primary cleaning [9][10][11][12][13]. coarse impurities; main fraction; 1frame; 2tray for large impurities; 3tray for the main fraction; 4forage tray; 5tray for fine impurities; 6slide surface In the second studied scheme of screen arrangement, a sorting screen D and a feeder screen B2 are sequentially installed in the upper tier, and in the lower tierthe cleaning screen C and the sorting screen D are installed, the sizes of holes of which are equal to B2 = 3.6 mm, D = 2.6 mm, C = 2.0 mm, respectively.…”

Review of Linear Electric Motor Hammers—An Energy-Saving and Eco-Friendly Solution in Industry

“…The linear electric motors used as the actuators of vibrating machines can easily change all the above-mentioned technological parameters by the signals from accelerometers, realizing efficient feedback loop control. Aipov et al [73] developed a sieve mill for a grain cleaning machine driven by a linear induction motor. It is shown that the advantage of a linear induction motor compared to standard drive designs is significantly less metal consumption for drive shafts, transmission elements, connecting shafts, bearings, and structure.…”

Mathematical Description and Study of the Vibration Deck of a Grain Sorting Machine

“…Since further development is impossible when using the classical scheme of sieve drives, in work of Aipov et al [19], it is proposed to use two rotational vibrators with the same or different static moments. The sieve (screen) trajectory is characterized by two different rotation speeds of the drive eccentric-type vibrators.…”