CS196546B1 - Torsion vibration absorber particularly for the heavy motor vehicle clutches - Google Patents

Description

The invention also relates to a torsional vibration damper, in particular for clutches of heavy-duty vehicles, in which the bearing disc or intermediate plate is connected to the bearing groove by means of a toothed profile in a non-rotatable but axially displaceable manner.

Known torsional vibration dampers of this design have separate friction linings between the hub flange and the discs or discs of the rotatable part rotated thereto, which are pressed by axially acting springs. These springs are generally formed by disk springs or annular springs, the force of which is not transmitted directly to the springs

C lining, but discs or lamellas adjoining the friction lining and interposed slats arranged for this purpose. Sometimes even the frictional curves are formed and straight friction pairs are formed between the individual discs or lamellas, also designed to provide separate bushings for the transmission of the frictional forces, which would have necessitated the relative movement of the springs. Adjustments are used to compensate wear of the friction linings. tract. The adjustment is usually performed by a nut arranged to the clutch fight.

5 known arrangements are very demanding for compliance with the specified tolerances and are few! for use in clutches of heavy motor vehicles, such as trucks16

19S 546 mobiles and buses, because they are not sufficiently robust, the misalignment between the driven and driven shafts is particularly unfavorable, as this does not create only the undesirable noise, but also leads to rapid wear of the clutch. construction is practically ineffective because the devices are not sufficiently stable in the desired size range. In some embodiments, the spring only acts on one side, that is, it acts on only one friction lining. Once the second friction lining is worn, predetermined parameters can no longer be achieved and the damping effect is greatly reduced. The same applies to the tolerances that are being worked on. For example, once the play is established, friction is greatly reduced or abolished, which also causes damping to be reduced or abolished. This creates an unpleasant noise is undesirable especially in buses. This will cause very severe wear on the clutch lining, which adversely affects. reliability of the ride and is the cause of frequent repairs.

It is an object of the present invention to overcome these disadvantages or at least substantially reduce them.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a torsional vibration damper which is particularly suitable for use in heavy-duty clutches, which does not require exact tolerances and which automatically compensates for any misalignment.

This object is achieved by a torsional vibration damper according to the invention, characterized in that the spring is arranged between the bearing disc and the cover disc and the clutch plate connected to the intermediate plates is movable between the bearing disc and the support disc, and a friction lining is provided between the intermediate disc and the second intermediate plate.

The arrangement according to the invention ensures constant damping and precise lateral guidance of the clutch plate. The centering of the clutch lining is effected by means of torsion springs. This automatically compensates for any misalignment.

The invention is explained in more detail below by means of two exemplary embodiments in conjunction with the accompanying drawings.

Fig. 1 shows a section of the torsion absorber according to the invention; Fig. 2 shows a further embodiment of the torsion absorber according to the invention, also in section; Fig. 3 shows a section of the embodiment according to Fig. 1; Fig. 4 shows a detail of the embodiment of Fig. 2.

The coupling hub 1 of the known construction is connected by rivets 2 to the cover discs. Also included in the riveting is the support disc 12, which in the axial direction forms the base for all the other parts, as well as the toothed profile 8 is provided with a grooved support disc 8 on which the support disc 8 is slidably arranged and thus connected to the coupling hub X. The clutch plate IP, provided with clutch lining II, is riveted with the interposed plates 8, 8 ' and is arranged with a clearance on a particularly wide flange 11 of the clutch hub. lamellas ΪΩ. Couplings inserted

198 548 plates 8, 8 *, support plate J2. The support of the torsion springs is improved by supporting plates 14 »· '.

Friction linings 1β are arranged between the intermediate slats 8, 8 'and between the support disk 12 or between the support disk 1. required for the required damping. The necessary compression pressure generating springs 6 which are supported on the cover disk 1 and the support disk 2. In this case, preferably one or more disk or ring springs are used.

In the event of wear of the friction linings 1β, the spring 6 moves the bearing disc 2 in the axial direction along the bearing groove 5 ^and thus ensures a permanent friction connection.

The clutch plate 10 can at any time perform relative angular movement with respect to the cover disc. The clearance between the flange 16 and the combination formed by the clutch plate 10 and the interposed plates 8 is sufficiently large to compensate for any misalignment automatically.

Claims (1)

SUBJECT OF THE INVENTION A torsional vibration damper, in particular for clutches of heavy-duty vehicles, in which the bearing disc or intermediate plate is connected via a toothed profile to the bearing groove disc non-rotatably but axially displaceably, the displacement force being produced by a spring, is arranged between the bearing disc (7) and the cover disc (3) and the clutch disc (10) connected and interposed by the slats (8, 8 '), is movable between the bearing disc (7) and the support disc (12), friction linings (13) are provided between the support disc (12) and one intermediate plate (8) and between the support disc (7) and the other intermediate plate (θ ').