CS277614B6 - Pneumatic flexible shaft coupling with dynamic control - Google Patents

Abstract

Pneumatic flexible axial shaft coupling with dynamic properties regulation is designed to ensure constant tuning of a torsionally oscillating mechanical system. The transmission of the load torque from the driving body (1) to the driven body (2) is carried out via the input replaceable control levers (3) and output replaceable control levers (9) through the compression space of the coupling formed by a flexible hollow body (6) and filled with a gaseous medium. Tuning of the torsionally oscillating mechanical system by the given coupling is ensured by the possibility of quick replacement of suitable sizes of the input replaceable control levers (3) and output replaceable control levers (9) while the system is at rest.

Description

Field of technology

The pneumatic flexible axial shaft coupling with regulation of dynamic properties, according to the present invention, is suitable for ensuring constant tuning of the torsional oscillating mechanical system and it is included in the group of flexible shaft couplings.

More agile state of the art

Due to the dangerous torsional vibrations of the mechanical system, it is necessary to make the appropriate adjustment or tuning. The purpose of tuning is to adjust the stiffness, damping or mass parameters of some members of the system so that dangerous torsional vibrations do not occur during the operating mode.

Dangerous torsional vibrations of the mechanical system are currently reduced to an acceptable level by the use of flexible shaft couplings. Hitherto known flexible shaft couplings are produced with flexible elemental metal, rubber or plastics. The most widespread and used in mechanical engineering are flexible shaft couplings with rubber flexible elementary. It should be emphasized that each elastic element, whether made of metallic or non-metallic material, is exposed to fatigue or aging due to external forces, which in this case results in a gradual loss of beneficial initial dynamic properties (dynamic torsional stiffness and damping factor) of the given clutches. Then the coupling starts to work as a fixed or expansion joint with completely different dynamic properties. As a result of the given facts, the very substantial ability of the clutch is gradually lost, namely: the ability of its constant tuning of the torsional oscillating mechanical system.

The essence of the invention

These shortcomings are eliminated by a pneumatic flexible axial shaft coupling with regulation of dynamic properties suitable for ensuring constant tuning of the torsional oscillating mechanical system. The essence of the invention is that the drive and driven body of a given clutch is movably connected to each other with the upper and lower cover of its compression space via replaceable control levers.

Tuning of the mechanical system, t. j. Appropriate adjustment of the dynamic properties of the pneumatic joint / stiffness and damping / dynamics of the system is realized by changing the required size of the input and output exchangeable control levers of the clutch under the idle of the given system. The advantage of the proposed solution is precisely the possibility of quick exchange of control levers and the used flexible material, i. j. a gaseous medium which is not subject to aging throughout its operation. As a result, the coupling does not lose its flood dynamic properties, unlike previously used flexible materials such as e.g. metal, rubber or plastic materials.

Overview of images in the drawing

In the accompanying drawing, in FIG. 1 in the front view and in FIG. 2 is a side view of a pneumatic flexible axial shaft coupling with control of dynamic properties.

CS 277614 B6 2

DETAILED DESCRIPTION OF THE INVENTION

The pneumatic coupling is connected to the drive shaft by a drive body 1, which is connected to the upper cover 4 and the lower cover 5 via an inlet replaceable control lever 3. The compression space of the clutch filled with gaseous medium formed by a flexible hollow body 2 inserted into the flanges 7 is screwed to the upper cover 4 and the lower cover 5, thus ensuring a perfect tightness of the coupling. The transmission of the load torque from the drive body 1 to the driven body 2 is realized by means of inserted replaceable control levers 3, through the compression space of the clutch and output replaceable control levers 2- Input and output replaceable control levers 2 and 1 are movably connected to the drive body 1, driven body 2 / upper cover 4 and lower cover 5. The valve 10 ensures the filling of the compression space of the coupling with a gaseous medium. By installing a suitable size of input and output interchangeable control levers 2 ^and 2 and filling the compression space of the clutch with gaseous medium with the required value of overpressure to the ambient atmosphere, we tune the torsionally oscillating mechanical system at rest so that dangerous torsional vibrations do not occur during operation.

Industrial usability.

Pneumatic flexible axial shaft coupling with regulation of dynamic properties due to its ability protects the unit from dangerous torsional vibrations. This coupling according to the invention increases the technical level and operational reliability of the machines and equipment in which it is engaged. The pneumatic clutch is designed to allow the tuning of dangerous torsional vibrations in the mechanical system for both directions of rotation. ’

Claims (2)

PATENT CLAIMS Pneumatic flexible shaft coupling axial with regulation of dynamic properties, consisting of drive body, driven body, input and output exchangeable control levers and flexible hollow body, characterized in that the drive body / 1 / and the driven body / 2 / s to the upper cover / 4 / and connected to the lower cover / 5 / by input interchangeable control levers / 3 / and output interchangeable control levers / 9 /.