CS201201B1 - Pneumatic flexible shaft coupling with the cylinders - Google Patents

Description

CZECHOSLOVAK SOCIALIST REPUBLIC (19) DESCRIPTION FOLLOWING COPYRIGHT CERTIFICATE 201201 (11) (Bl) (22) Enrolled 12 01 73 (21) (PV 259-73) (51) Int. Cl.3 F 16 D 3/22 (40) Published 29 08 75 OFFICE AND DISCOVERY OFFICE (45) Published 15 04 82 (75)

Author of the invention LAGKO PAVOL ing. CSc., ŠEMŠA (54) Pneumatic flexible shaft coupling with rollers

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic flexible yoke coupling with rollers fitted with a drive and driven part of a plunger which is suspended by a gaseous medium in a closed reservoir.

Up to now, the flexible metal, rubber or spring flexible couplings of plastic material are subject to fatigue or aging. This fatigue or aging results in a change in clutch characteristics. Then, at the beginning of its life, the coupler operates with other characteristics and at the end of its life. Because the frequency of the coupling changes as well as the actual frequency of the coupling, the dynamic ratios of the system in which the coupling is arranged are altered. There may be a situation where the frequency of the transmitted torque is equal to the frequency of the system's own oscillations. Thus, a resonance is obtained when the machine components are subjected to high load amplitudes that exceed the permissible stresses. Machine parts are worn out, reducing their lifetime and operational reliability.

Therefore, there appears to be a need to develop a flexible shaft coupling which retains the advantages of the couplings used up to now, but has eliminated the drawbacks.

The aforementioned drawback is eliminated by a pneumatic elastic clutch with rollers, characterized in that radially disposed pistons are disposed in the driven part and are selected on their outer side. In these recesses, the "rollers rolling over the non-circular groove hub" are mounted axially, the piston rollers being aligned with the axial hole in the shaft connected to the reducer by a throttle diaphragm.

In the accompanying drawings, Fig. 1 shows a partial arrangement of the pneumatic flexible shaft coupling with the rollers in the front view, in the radial direction for both directions of rotation, the coupling in Fig. 2 is shown. 3 shows a single clutch for one direction of rotation.

The coupling according to the invention (Fig. 1) comprises a drive hub 1 and a flange 2 which is screwed to the hubs 1 by screws 8 secured by a spring washer 9. The driven hub 3 is mounted on the shaft 6 and secured with a tongue 7. The driven hub flange 2 closes on its inner periphery the non-circular tracks on which the rollers roll 5axially secured by the ring 10. The pressure rollers 5 press or release the pistons 4 which are slidably mounted in the driven hub 3. The hollow portion of the cylinder is the opening in the shaft 6a through a connecting pipe 12 connected to a roller coil in which the disc 201201 is moved

Claims (1)

2 piston 15. The reducer cylinder 16 is blocked by the throttle diaphragm 14. The diaphragm 14 is jeaxially secured by the ring 13. If the hollow cylinder of the driven hub 3 and the cylinder of the reducer 16 are filled with a gaseous medium such as air at a certain overpressure, the junction is ready for operation. The load-bearing torque is transmitted to the drive hub of the 1-coupling away! a flange 2 on the inner side of the non-circular recess, on which the pressure rollers 5 move away. The pressure rollers 5 are partially encircled by radially arranged regions 4 which act directly on the gaseous medium. According to the magnitude of the transmitted torque, the rollers 4 load the gaseous medium which circulates through the membrane openings 14 and provides a damping action by the coupling accumulated in proportion to the amplitudes of the pulsing torque or torque impact. In the system (driven hub 3 and reducer) we increase the compression volume by changing the position of the displacement 15 in the reducer cylinder 16, varying the torsional stiffness, or fluently changing the characteristics of the pneumatic clutch. The pneumatic flexible shaft coupling according to the invention gives the curvature characteristics of the torque transfer torque from the drive driven machine and the continuously variable characteristic Pneumatic flexible shaft couplings characterized in that the driven hub (3) is disposed radially, disposed pistons (4 ), which have, on their outer side, recesses in which the axially arranged rollers (5) are arranged, by means of a viscosity. Since the compression space of the driven hub 3 is coupled to the reducer, which continuously changes its volume, it continuously changes the mode of operation of the drive and driven machines and instantaneously energizes the oscillation of the apparatus. The welding energy of the torsional vibration or the torsion-torque energy is also increased by the attenuator. By this system, the full tensile tension can tear the torsional stiffness of the clutch, which precedes the resonant oscillation formed by its own clutch and the masses of the driven and driven machine a. . The clutch is torsionally soft, allowing the construction machinery to be inaccurate with the machinery. The coupling finds application everywhere, whereby we want to eliminate the undesirable properties of the previously known joints, resulting from fatigue and aging of the spring element. Also where we want to smoothly tune the torsion system even when fully loaded, thus avoiding dangerous resonant vibration phenomena. These are mainly high-speed diesel engine diesel and diesel-electric locomotives, compressors, marine engines and the like rolling on a non-circular drive train (2), wherein the piston cylinders (4) are axial openings associated with an axial opening -rom the shaft (6), connected to the reducer (16) by a throttled diaphragm (14). 3 drawings