CS259224B1 - Pneumatic flexible shaft coupling with damping control - Google Patents

Abstract

The pneumatic flexible shaft coupling with torsional vibration damping and torsional shock control and additional control system is designed for the flexible transmission of mechanical energy in the drive and driven system. The aim of the solution is to improve the current state of the flexible shaft couplings and their technical level in the field of damping and use this coupling with damping control and an additional control system to ensure a buoyant change in its torsional stiffness. We will achieve this by using a pneumatic flexible shaft coupling with damping control and an additional control system. The damping of the work for a certain value of its adjustment by the intervention of the outside, characterized by throttling at the flow of the gaseous medium, is stable throughout the service life of the coupling (as opposed to the previous types of flexible couplings). By continuously changing the torsional stiffness of the clutch, we continuously change, so we adjust the frequency of our own oscillations to the frequency of the oscillations of the transmitted load so that no resonance state occurs within the operating mode range.

Description

259224

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic flexible shaft coupling with torque control and torsional shock control for providing flexible transmission of mechanical energy to a drive and driven machine.

The hitherto known flexible shaft couplings, made with flexible elements made of various materials, give a linear or curved torque transmission characteristic of torque-damping torsional shocks which, by aging the elastic material, lose their characteristic properties and the clutch begins to work as a solid, possibly dilatory. The characteristic of this coupler is gradually transformed into a straight line, whereby the hysteresis loop expressing energy is gradually lost. We can only restore the positive positional properties of the coupling by replacing the flexible element with another, or replacing the entire flexible shaft coupling with the desired characteristics. *

Therefore, there appears to be a need for a flexible shaft clutch to satisfy the requirements of the flexible clutch but at the same time be able to provide a flexible transmission of mechanical energy with controllable damping of torsional vibration and torsional impacts without loss of characteristic energy-expressing properties.

The above-mentioned drawbacks are eliminated by pneumatic flexible shaft couplings and by controlling the damping vibrations and torsional impacts of the present invention. It is an object of the invention to control the damping of the damping of a pneumatic flexible shaft coupling with flexible hollow telescopic gaseous media.

By connecting two consecutive resilient hollow bodies with elements permitting control by externally engaging the interchangeable interchangeable nozzles, the flow of the gaseous medium is effected by transmitting the oscillating torque which is twisted by these throttling elements. the throttling work that results from this flow is proportional to the clutch damping work by the possibility of its regulation according to the need for the individual torsional vibration and torsional bumps occurring in the drive and driven system. It should be noted that the resulting damping work for a certain value of its setting is. stood for the entire service life of the clutch / as opposed to, for example, the previous types of flexible clutches / and is expressed by the size of the surfacesteric loop in the clutch characteristic.

In the accompanying drawing, there are shown in two views with a cut section a pneumatic flexible shaft coupling with tangentially spaced flexible hollow bodies over the circumference, with the possibility of regulating damping and with an additional control system to ensure a smooth change in the curvilinear characteristic of the coupling which aggregates the most optimally from the dynamic view of the work.

A pneumatic flexible shaft coupling comprising a driving part 2 and a driven part 2, between which a flexible hollow body 10 filled with gaseous medium is arranged by circumferentially circumferentially displacing the torque transmission from the driving driven part of the coupling. The flexible hollow bodies 10 by means of screws 5 are connected to the support body 7, thereby ensuring a perfect sealing of the coupling. The support bodies 7 are screwed to the drive 2 and drive part 2 by means of the screws 6. By means of the valve 9 we ensure the filling of the flexible cavities with the gaseous medium. The regulation of torsional vibration damping and torsional shock is the exchange of interchangeable throttle nozzles ± / with still different drilling / interconnected hoses according to the need for damping work for the momentarily dynamic behavior of the unit. The regulation of the gaseous clutch medium to ensure a smooth change in the curve characteristic / fluctuation of its torsional stiffness is provided by the control system 11, which comprises the control 12 and the control subsystem 13.

If the flexible hollow body 10 of the pneumatic flexible coupling with the throttle control is filled with gaseous medium of initial overpressure p, this keeps the driving part 1 against the driven part 2 of the clutch in the basic position as shown. When increasing the torque, the angular displacement / rotation / drive relative to the driven part of the clutch is generated, thereby creating

Claims (1)

No. 3 259224 compressing the gaseous medium in the resilient hollow bodies proportional to the load, resulting in a flexible torque transmission in the drive and driven system. In the case of the transmission of the oscillating torque by the pneumatic flexible shaft coupling to the control of the damping, the carrier gaseous medium is pulsed in the resilient hollow bodies, which in turn flowed through the currently used throttle nozzles, which connect the successive flexible hollow bodies to each other. The flow of the gaseous medium is accompanied by a throttle at the flow rate, thereby characterizing the throttling work proportional to the damping work that can be controlled by externally intervention by exchanging the throttle nozzles for the momentary behavior of the aggregate. The continuous change of the torsional stiffness of the coupling, characterized by a fluent change in the curve characteristic, is ensured by an additional control system 11, which changes the frequency of the actual oscillations to the frequency of the transmitted wavelength so that the resonance state does not occur within the operating mode. The use of a damped, flexible damping pneumatic clutch and additionally with an additional regulating system to ensure a smooth change in the curvature characteristics of the clutch of the present invention is possible wherever the situation requires protecting the aggregate from hazardous shock vibrations, torsional shocks, and additional shaft bending stress causing unintended overload even a premature fatigue fracture. The clutch is constructed for both directions of rotation, allowing axial, radial and angular deviations of the axis of the solder shaft. By converting them into all the demands placed on flexible shaft couplings, they increase the technical level and operational reliability of the machines and equipment in which they are incorporated. SUBJECT MATERIAL Pneumatic flexible shaft coupling with damping control, consisting of a driving part, a driven part, of flexible hollow bodies filled with gaseous medium, distributed between the sections, characterized in that it comprises at least one interchangeable nozzle (4). 1 drawing