CS277615B6 - Pneumatic axial shaft coupling with hydraulic damping chamber - Google Patents

Abstract

Pneumatic clutch with hydraulic damping chamber It is intended for damping torsional vibrations and torsional shocks during the elastic transmission of load torque in a mechanical system with piston machines. The load torque from the driving body (1) to the driven body (2) is transmitted by the overpressure of the gaseous medium of the clutch compression space formed by the upper elastic hollow body (6) and the lower elastic hollow body (7). The hydraulic damping chamber (10) divides the compression space into the upper part (14) and the lower part (15) of the clutch compression space. The hydraulic damping chamber (10), formed by the upper elastic rubber casing (11), the lower elastic rubber casing (12) and the steel throttling diaphragm (13), is actuated by the pusher body (18).

Description

1 CS 277615 B6 »

Technical field

The pneumatic, flexible shaft coupling with the hydraulic damping chamber engages in the area of the flexible shaft couplings and is designed to provide damping of torsional vibration torsional shocks with the resilient transfer of a heavy torque in a mechanical system with piston machines.

The better state of the art

The most commonly used machine members for securing torsional vibration and torsional shocks occurring in all mechanical assemblies with piston machines, spiral shaft couplings. In addition, they serve to compensate for the axial, radial and angular misalignment of the shaft, characterized by the curvilinear characteristic of the torque transmission with torsional vibration damping and torsional impact. The known elastic shaft couplings are made with flexible elementary materials. In mechanical engineering, rubber elastic couplings are the most used. The conversion of the silent energy causes the aging of the elastic material to cease, causing its damping and resilient properties to be lost, and the clutch to be solid, possibly dilatable. As a result, the positive curve characteristic of the water-based flexible shaft coupling gradually changes to a straight line, resulting in a gradual loss of elastic properties and at the same time a loss of damping properties. This leads to a fundamental change in the ability of the coupling to damp torsional oscillations and torsional impacts in the elastic transmission torque in the mechanical system with piston machines.

The above mentioned drawbacks are eliminated by a pneumatic flexible shaft coupling with a hydraulic damping chamber. It is an object of the present invention that a hydraulic damping chamber is provided in the compression space of the coupling filled with the gaseous medium formed by the flexible hollow bodies. The hydraulic damping chamber is composed of an upper and a lower elastic rubber covering, at least one steel diaphragm opaque through the openings and from the liquid, it provides damping properties of the coupling by overflowing the fluid through the throttle opening.

In the transmission of the load torque in the torsional oscillating system, the drive-to-drive clutch is displaced as a result of which compression of the gaseous medium is generated in its compression space, thereby providing a resilient transmission of the torque load to the system. The constant elastic transmission of the load torque is ensured by the fact that the flexible material used in the coupling is a gaseous medium which is not subject to aging during its entire operation. At the same time, by effecting the harmonic component of the torque load, the biasing occurs, resulting in the pulsation of the fluid in the hydraulic damping chamber, which, in proportion to the oscillation of the fluid flow, is accompanied by throttling at the flow rate, thereby proportional to the damping pracispojky. The clutch damping ability can be controlled by using a larger number of steel throttle diaphragms. The CS 277615 B6 2 resilient transmission of severe torque with constant torsional vibration damping and torsional impact resistance in the mechanical assembly of piston machines is a fundamental advantage of the present invention, as opposed to currently used elastic rubber couplings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view of the pneumatic flexible shaft coupling with the hydraulic damping chamber in FIG. An embodiment of the invention

The pneumatic clutch is coupled to the drive shaft by a driving body 1, which is connected via the replaceable control levers 2 to the upper housing 4 and the lower housing 5 of the clutch compression space. upper and lower resilient hollow8. is the sealing screws 9. to the lower cover 5, thereby

The clutch compression space, formed by the body 6 and 7 inserted into the flange, is screwed to the upper housing 4 and the clutch is securely sealed. In order to ensure the coupling properties, a hydraulic buffer chamber 10 filled with liquid is formed in its compression space. The hydraulic muffler 10, consisting of an upper elastic rubber shell 11, a flexible rubber casing 12 and a steel throttle diaphragm 13, divides the clutch compression space into the upper portion 14 and the lower portion 15, which are joined together by the screws 16. A steel throttle diaphragm 13 is provided with throttle openings 17 in the clutch load direction. The torque load from the drive body 1 is transmitted by replaceable control levers 3 through the compression chamber of the clutch to the driven body 2. Interchangeable control levers 3 by a joint of the joint attached to the drive the body 1, the driven body 2, the upper housing 4 and the lower housing 5. During overloading the torque by the clutch, the hydraulic damper 10 is actuated by the pusher body 18, which is rigidly coupled to the upper housing 6 and the upper resilient rubber housing. The upper valve 19 and the lower valve 20 are provided with gaseous medium for filling the clutch compression space.

The gaseous medium-filled upper portion 14 of the compression space of the coupling and the lower portion 15 of the compression space of the coupling of the required overpressure value relative to the ambient atmosphere maintains the drive body 1 relative to the driven 2 in the base position. In the torsion-oscillating mechanical system, when the load torque is transmitted, the coupling is deformed, which is manifested by the simultaneous displacement of the upper housing 4 and the lower compression chamber cover 5 together. The deformation of the coupling creates compression of the gaseous medium and also actuates the hydraulic chamber 10 via the push rod 18.

Industrial usability

The pneumatic axial shaft coupling with the hydraulic damping chamber is able to provide damping of the torsional vibration torsional shocks with the resilient transfer of the load torque in the mechanical system with the piston machines. The purpose of the solution is to improve the current state of flexible shaft couplings,

Claims (5)

PATENT CLAIMS A pneumatic flexible axial shaft coupling with a hydraulic damping chamber, consisting of a drive body, a driven body, flexible rubber bodies which form a compression space of the clutch filled with a gaseous medium, a hydraulic damping chamber and a pressure body, characterized in that the hydraulic damping body the chamber / 10 / is formed of an upper flexible rubber casing / 11 /, a lower flexible rubber casing / 12 / and at least one steel throttling membrane / 13 /. 2. Pneumatic flexible shaft coupling according to item 1, characterized in that the steel throttle diaphragm (13) is provided with at least one throttle hole (17). 3. Pneumatic flexible shaft coupling according to item 1, characterized in that the hydraulic damping chamber (10) is located between the upper part (14) of the compression space of the coupling and the lower part (15) of the compression space of the coupling. 4. Pneumatic flexible shaft coupling according to item 3, characterized in that the upper part (14) of the compression space of the coupling is provided with a pressure body (18). 5. Pneumatic flexible shaft coupling according to items 1 and 4, characterized in that the pressure body (18) is rigidly connected to the upper cover (4) and the upper flexible rubber housing (11).