Characteristics of Pneumatic Tuners of Torsional Oscillation as a Result of Patent Activity

Abstract

Mechanical systems with combustion engines, compressors, pumps and fans, can be characterized as torsional oscillating mechanical systems (TOMS). It is therefore necessary to control their dangerous torsional vibrations. It was confirmed that dangerous torsional vibration can be reduced to acceptable level by an appropriate adjustment, respectively by tuning the TOMS. According to several authors, the most appropriate way of system tuning is application of suitable flexible element, which is flexible shaft coupling. It turned out that one of the types of shaft couplings, which are particularly suited to meeting this objective are pneumatic flexible shaft couplings, to act as so-called pneumatic tuners of torsional oscillations. The issue of research and development of pneumatic tuners of torsional oscillations, among other things is, long-term in the focus of the author. The existence of tuners creates the opportunity to develop new ways of tuning torsional oscillating mechanical systems. The author of the scientific article will focus on the characteristics of developed pneumatic tuners of torsional oscillation in terms of their design, construction, function, significance advantages and conditions imposed on pneumatic tuners based on the results of his patent activity. Simultaneously provides information about the characteristic properties of pneumatic tuners of torsional oscillations in the general design.

Comparison of Piston and Tangential Pneumatic Flexible Shaft Couplings in Terms of High Flexibility

“… To achieve the presented transmission ability (Figs. [6][7][8], the piston coupling needs to work with relatively high levels of overpressure in its compression space ( Fig. 5).…”

“…Nowadays, reducing vibration and noise in machinery is a highly important task, mainly in terms of human health and the lifetime and safety of machines, e.g., [2][3][4][5][6]8,9,13]. Flexible shaft couplings are the most used machine parts for the flexible transmission of load torque and mechanical energy in mechanical systems.…”

“…Another highly important function performed by them is the dynamic tuning of mechanical systems in terms of torsional vibration magnitude. Therefore, a flexible coupling with suitable dynamic properties, particularly dynamic torsional stiffness, has to be carefully chosen for each specific application to ensure that dangerous torsional vibration does not occur in a mechanical system, e.g., [8,9,12Błąd! Nie można odnaleźć źródła odwołania.].…”

Impact Evaluation of Piston Rings Mobility on a Gas Passage in an Internal Combustion Engine (Ice)

“…They can also be successfully used for diagnostic purposes. Such methods have been increasingly used in recent years [3][4][5][6][7][8]10,16,18,23,24].…”

Stress-Strain State of Pneumatic Flexible Shaft Coupling for Ball Mill Drives

“…Drive couplings may also perform other important functions: compensation for small mounting misalignments of units and assemblies, disconnection of shafts, automatic control of machine operation, smooth coupling of shafts on machine startup, protection of machines from breakdowns in emergency mode etc [1]. In today's mechanical engineering context, couplings with non-metal flexible elements, which possess high compensating and damping properties, are widely used [2]. However, these couplings are generally applied for the transmission of low and medium torque because of the low strength of rubber and polymers.…”