OSCILLATION DAMPER FOR VIBRATION DRIVERS

Abstract

An oscillation damper for vibration drivers for suspension from a load-bearing means displays a damping body connected on its opposite end faces to pressure bodies which are variable in their spacing, having a rigid support element which is assigned to the load-bearing means and a rigid support element which is assigned to the vibration driver. The two support elements are connected in an articulated manner by way of flexible ties to each pressure body. The longitudinal axes of the ties form in each case an acute angle with the vertical that decreases as tensile force increases, on account of which high tensile forces can be introduced onto the damping body. Simultaneously with the churning operation of the damping body a pendulum movement of the laterally disposed pressure bodies about the articulations of the ties takes place, on account of which vertical oscillation is largely eliminated.

Description

The invention relates to an oscillation damper for vibration drivers for suspension from a load-bearing means, having one or more damping bodies which is/are configured as hollow rubber springs and is/are disposed in each case between two pressure bodies which are spaced apart and composed of steel, wherein the damping body or the damping bodies is or are disposed in a parallelogram linkage system which is capable of oscillation, on account of which, even at the highest tensile load, the vertical oscillation introduced from the piling or drawing apparatus is largely eliminated and, on account thereof, is not introducible into the load cable or similar of the load-bearing means.

PRIOR ART

By way of DE 28 23 953 C2 and FR 2 427 433, GB 2 027 159 A and U.S. Pat. No. 4,274,761 (all of identical content), a suspension device for vibration drivers on a load-bearing means (a crane hook or similar) having an elastic oscillation damper which is disposed between the vibration driver and the load-bearing means, which damper displays at least one elastic damping body which on its ends is connected to pressure plates, having variable spacing, which are connectable by way of at least one tie—cable, belt, wire, or similar—which is of modifiable shape to the load-bearing means, on the one hand, and to the vibration driver, on the other hand, has been previously known. The oscillation damper displays two support plates which are disposed so as to be spaced apart in the direction of tension, of which one support plate is connectable to the load-bearing means and the other support plate to the vibration driver, wherein the damping body, with the pressure plates, with its longitudinal axis is disposed transversely to the direction of tension in the free space between the two support plates, wherein either a single endless sling which is fastened to the support and pressure plates serves as a tension means, or that four endless slings are in each case fastened on one support plate and on one pressure plate. The damping body is a hollow body of rubber or of an elastic plastic material. Moreover, the damping body is hollow cylindrical or configured so as to taper into a hollow cone toward its ends. In each case one of the ties is coupled in an articulated manner to both the upper and also the lower end of each pressure plate, and the other side of these ties is coupled in an articulated manner to the support plates. The ties, in each case on their ends, form eyelets by way of which they are pushed onto horizontal bolts, in order to form oscillation articulations.

It is disadvantageous in this previously known design that two damping bodies which, in the central region, bear on a rigid disk, are disposed transversely to the direction of tension. On account thereof, an unfavorable force profile in the damping bodies and an unfavorable oscillation method result.

DE 675 502 shows a spring system, in particular for motor vehicles, having an elastic tension belt which is placed about two rollers which are movable in relation to one another. The two strands of the elastic tension belt, in the center between the rollers, are embraced by an elastic cross belt and, in the unloaded state, are drawn-in in an angular manner, such that an exaggerated spring characteristic is realized in the spring compression operation. Instead of the cross belt, an elastic pressure body which, in the unloaded state, spreads apart the free belt lengths of the tension belt in an angular manner may also be provided.

A suspension device constructed from rigid articulations, which is interconnected by axles running in parallel to one another, has been previously known from GB 4 91 031, wherein in the central region a compression spring composed of steel, which on its ends bears in each case on a lever element, is disposed.

Object

The invention is based on the object of improving an oscillation damper of the generic type implied such that a better damping performance of the oscillations in relation to the load-bearing means which are generated when working by means of vibration drivers is provided.

Solution

The object is achieved by each of the two alternative independent claims 1 and 3 independently of one another.

Some Advantages

In the case of the suspension device according to the invention, at least one damping body which displays rubber-type properties and is overall materially integral is disposed between two pressure plates which are composed of a rigid material, in particular of steel. This damping body is designed so as to be approximately barrel-shaped and enables excellent oscillation damping properties when working by means of vibration drivers, even when transmitting comparatively high centrifugal forces. Here, the pressure plates are always held in a functionally integral manner on the end sides of the materially integral damping body, such that a force introduction across a wide area is provided from the pressure plates onto the damping body. The horizontally disposed damping body configured as a hollow rubber spring, or the identically designed damping bodies which are disposed so as to be parallel to one another and which are configured as hollow rubber springs assumes/assume the oscillation-insulating function. As the tensile force increases, the angle α decreases, in each case measured between, for example, one of the upper directional elements and an imaginary vertical line, on account of which the compressive load of the hollow rubber spring decreases in a proportional manner to the tensile force. It is practically possible in this manner to introduce high tensile forces (high pre-tensile forces in the case of heavy drawing work) into the piling and drawing apparatus, without the damping bodies which are configured as a hollow rubber spring being overloaded. Simultaneously to the churning operation of the hollow rubber spring, on account of the geometrically disposed lever-arm elements a pendulum movement of the laterally disposed pressure bodies which are configured as steel plates takes place about the upper articulation points. On account thereof, even at the highest tensile load, the vertical oscillation introduced from the piling and drawing apparatus is eliminated and not transmitted into the load cable of the supporting apparatus. When mention is made of “hollow rubber springs”, this is not necessarily to be understood as a natural rubber but optionally as a natural rubber mixture or as a plastic material which displays rubber-type properties, for example a polyurethane plastic or some other elastomer which is resistant to aggressive agents encountered on construction sites, such as greases, oils, gasoline, types of water, and which is also resistant to ozone and light radiation, and has the required resistance to abrasion. When mention is made that the oscillation damper is connected to the load-bearing means, on the one hand, and to the vibration driver, on the other hand, this may, of course, also take place in an indirect manner, that is to say that other elements, such as grommets, shackles, cable strands, chains, or similar, may also be disposed in between.

The solution according to claim 2 differs from the solution according to claim 1 in that the respective damping body is disposed in an oscillatory manner between the pressure plates, while in the solution according to claim 3 a plurality of damping bodies, of same size, are disposed between the plate-shaped pressure bodies composed of steel, wherein the damping bodies with their longitudinal axes are deputized so as to be parallel to one another, at slight spacing from one another, preferably at gap spacing, in such a manner that they do not obstruct one another during operation. It is advantageous, for example, to dispose two damping bodies of such type, of same size and same shape, which are configured as hollow rubber springs, beside on another.

Further Inventive Designs

Further inventive designs are described in claims 4 to 19.

Claim 4 describes an embodiment in which the lever-arm elements, on their end regions, are connected to the assigned support element, on the one hand, and to the respectively assigned pressure body, on the other hand, by way of articulations. On account thereof, a free-moving oscillation potential of the overall structure results.

An embodiment according to claim 5 is particularly advantageous, in which the lever-arm elements are steel cables or steel-cable loops. Lever-arm elements of such type which are composed of steel cables can adapt to the oscillations in a particularly easy manner.

Claim 6 describes an advantageous and rugged solution.

In the case of the embodiment according to claim 7, the lever-arm elements are endless loops of steel cables. These respective endless loops are disposed by way of bolt bearings, are very rugged and in each case enable free oscillation, in particular by way of the upper articulation points.

In contrast, claim 8 describes an embodiment in which the lever-arm elements are rigid bodies, in particular composed of steel, which on their end regions display bearings which, by way of articulations, are in each case coupled to one another in an oscillatory manner by means of the upper support element or the lower support element. These bearings may be spatial articulations, or else articulations which enable in each case oscillation only in one plane.

An embodiment according to claim 9 is particularly advantageous, in which the damping body or the damping bodies is/are practically disposed in a parallelogram linkage system which is capable of oscillation, which is/are formed by the pressure bodies, on the one hand, and by the bearing center points of the lever-arm elements, on the other hand. On account thereof, particularly in the case of high tensile loads, practically all damaging oscillations which could be transmitted onto the load-bearing means, for example onto a crane hook, are eliminated.

Claim 10 describes damping bodies which are designed so as to be barrel-shaped and which are particularly hard-wearing in the rough operation on construction sites and thus under extreme conditions.

A particularly advantageous embodiment is described in claim 11.

If an embodiment according to claim 12 is chosen, then the pressure plates are connected to one another by a coupling element which is configured as a steel cable. If and when required, this coupling element may be a bar or a body which is composed of an elastic plastic material displaying rubber-type properties and which, under pre-tensioning, presses the two pressure plates against one another and thus against the end side of the damping element disposed in between.

Claim 13 describes a further particularly advantageous embodiment. Here, the coupling element is configured as helical spring composed of steel, which is installed under pre-tensioning. The pre-tensioning may be optionally adjustable also during operation and also be arrestable under the respective pre-tensioning. To this end, the bearings on the pressure bodies, at least on one side for the coupling element, can be adjusted and arrested.

Claims 14 to 19 describe further advantageous embodiments of the invention.

The invention is visualized—in part in a schematic manner—in the drawing, using exemplary embodiments. In the drawing:

FIG. 1 shows an oscillation damper in the side view, having a damping body which is designed so as to be approximately barrel-shaped;

FIG. 2 shows a further embodiment of the invention, in the front view;

FIG. 3 shows a plan view, complementing FIG. 2;

FIG. 4 shows a side view, complementing FIG. 2;

FIG. 5 shows a schematic illustration for explaining an oscillation damper and its oscillation performance.

Reference signs 1 and 2 identify support elements composed of steel, which, as can be seen from the side view in FIG. 1, are approximately triangular, and which may also be composed of two tabular elements, of same size and same shape, which are spaced apart and disposed so as to be parallel to one another. In the case of the illustrated embodiments, the support elements 1 and 2 are formed in the shape of an approximately equilateral triangle, wherein the tips of the triangular support elements 1 and 2 are disposed so as to be offset by 180° from one another.

The support element 1 identifies a load-bearing means which may be coupled to a crane hook or similar, for example, and which is coupled in a pivotally moving manner in the direction A and/or B to the support plate 1 by way of a pivot axle 4. The pivot axle 4 engages through a boring (not described in more detail) of the support element 1, wherein the pivot axle 4 is releasably arrested by way of suitable means, for example by way of a counternut 5. The pivot axle may be a stud bolt.

Also releasably connected by way of a counternut 7 or similar to the support element 2, in the region of the tip of the triangle, is a pivot axle 6 which likewise permits a pivot movement within limits of a load-bearing means 8 in the direction A and/or B. The load-bearing means 8 may be releasably coupled to a vibration driver (not illustrated).

At 9 and 10 of the support element 1, on the one hand, and/or at 11 and 12 of the support element 2, on the other hand, bolts are disposed in the corner regions of the triangular support elements 1, 2. Both the pivot axles 4 and 6, and also the bolts 9 to 12, are composed of steel in the case of the illustrated embodiments, and may be stud bolts.

At 13, 13a, pressure bodies which are likewise composed of steel and which in each case display in their end regions bearing elements 14, 15 and/or 16, 17, which are configured as bolts and the longitudinal axes thereof are disposed so as to be parallel to the longitudinal axes of the pivot axles 4 and 6 and the bolts 9 to 12, are disposed.

The pivot axles 4 and 6, on the one hand, and the bolts 9, 10 and 11, 12, on the other hand, are of same size and same shape, and in the case of the illustrated embodiments are specifically configured so as to be circular in cross section. Also the bolts 14, 15, on the one hand, and 16, 17, on the other hand, are of same size and same shape, and in the illustrated embodiment likewise designed so as to be circular in cross section, and are composed of steel. Both the bolts 9, 10 and/or 11, 12, on the one hand, and also the bolts 14, 15 and 16, 17, on the other hand, may however also have a design which deviates from the cylindrical shape, if this should prove necessary or expedient.

The pressure bodies 13 and 13a, on their ends facing one another, display pressure plates 18 and/or 19 which are connected to the respective pressure body 13 and/or 13a in an integral manner, in particular in a materially integral manner or a functionally integral manner, in the latter case, for example, by way of screws or weldseams or similar, wherein the pressure plates 18 and 19, like the pressure bodies 13 and 13a, are preferably composed of steel.

The bolts 9 and 10 of the support element 1 are movably coupled by way of flexible ties 20 and/or 21 to the bolts 14 and/or 16 of the pressure bodies 13 and/or 13a. The ties 20 and 21 may be endless loops of steel cables which place themselves around the bolts 9 and 10, on the one hand, and the bolts 14 and 16, on the other hand.

Also the bolts 15 and/or 17 are coupled by way of flexible ties 22 and/or 23 to the bolt 11 and/or 12. Also the ties 22, 23 may be configured as endless loops of steel cables and be placed around the bolts 15, 17, on the one hand, and/or 11, 12, on the other hand.

The flexible ties 20, 21 and 22, 23 may be designed as steel cables, belts, or chains, but preferably as steel cables, and connect the respective bolts 9, 10 and 14, 16 and/or 15, 17 and 11, 12 to one another in an articulated and flexible manner.

Between the pressure plates 18 and 19 of the pressure bodies 13 and 13a, a materially integral, barrel-shaped damping body 24 which, with its end sides 25 and/or 26, bears practically without play on the respectively assigned pressure plate 18 and 19 of the pressure bodies 13, 13a is disposed. In the case of the illustrated embodiment, the damping body 24 is composed in a materially integral manner of a plastic material which displays elastic properties, for example of an elastomer or of a natural rubber mixture. In the case of the illustrated embodiment the damping body 24 is composed of two conically truncated longitudinal portions 27 and 28 which are directed toward one another and which, in the central longitudinal region of the damping body 24, are connected to one another in a materially integral manner by way of a cylindrical longitudinal portion 29. In contrast to the illustrated embodiment, the materially integral damping body 24 may also be profiled so as to be barrel-shaped, that is to say outwardly bulging in a constant curve, and display the largest diameter in its central longitudinal region.

The resilient damping body 24 display a clearance 30 which passes therethrough and which, in the central longitudinal region, is widened and which, in the opposite end regions 31, 32, is configured so as to be cylindrical. Cylindrical centering sleeves or guide sleeves 33, 34 which are connected, for example releasably, in a materially integral manner or a functionally integral manner to the assigned pressure plate 18 and/or 19, engage into these cylindrical end regions 31, 32.

As per the embodiment as per FIG. 1, a coupling element 35 in the shape of a helical tension spring composed of steel, which may be configured with one or multiple windings and which, on its ends, is fastened under pre-tensioning in bearings 36 or 37 on the pressure bodies 13 and/or 13a, engages through the clearance 30, in the longitudinal axis direction of the damping body 24 or the damping bodies. One or both bearings 36 and 37 may be adjustable and arrestable in the respective pre-tensioned position of the coupling element 35.

The same reference signs as in FIG. 1 have been used for same parts in the case of the exemplary embodiment as per FIGS. 2 to 4.

In contrast to the embodiment as per FIG. 1, in the embodiment as per FIGS. 2 to 4, two damping bodies 24 which are of same size and same shape and, with their longitudinal axes, run parallel to one another are disposed between the pressure bodies 13, 13a, and their pressure plates 18, 19. The two barrel-shaped damping bodies 24, with their end sides 25 and 26, are supported in a solid manner on the pressure plates 18, 19 which face toward the former. Each of the damping bodies 24 displays a clearance, similar to the clearance 30 of the embodiment as per FIG. 1, through which in each case a coupling element 35 which is configured and disposed in a similar manner as in the case of the embodiment as per FIG. 1, engages. In contrast to the embodiment as per FIG. 1, the coupling elements 35 in the case of the embodiment as per FIGS. 2 to 4 are formed as elongate, bar-shaped bodies which are composed of a plastic material displaying rubber-type properties, but may also be helical tension springs, as is the case in the embodiment as per FIG. 5. For this purpose, the same plastic material may be used as for the damping body 24, or else another plastic material displaying resilient properties, for example polyurethane plastic. The coupling elements 35 in the case of the embodiment as per FIGS. 2 to 4 are advantageously also installed under pre-tensioning, wherein the pre-tensioning, if and when required, may likewise be adjustable and also arrestable in the respective pre-tensioned position. For this purpose, the bearings 36 and 37 may be adjustable in the axial direction, as is the case in the embodiment. If and when required, adjustment and arresting of one of the bearings will suffice.

Oscillation dampers of the type according to the invention may readily receive centrifugal forces in the order of many tons, for example more than one hundred tons, and on account thereof keep away damaging oscillations from the load-bearing means 3, for example a crane hook of an excavator, or similar.

The mode of action of the oscillation damper according to the invention is substantially as follows: As is evident in particular from FIG. 5, the flexible ties 20, 21, for example steel cables, on the one hand, connect the support element 1, which is composed of steel and is, therefore, rigid, to the respective pressure body 13 and/or 13a, and, on the other hand, the likewise flexible ties 22 and 23, configured in particular from steel cables, connect the support element 2 which is composed of steel and is, therefore, rigid. On account thereof, articulations result on the connection positions of the flexible ties 20, 21, 22, 23 to the support element 1, on the one hand, and/or the support element 2, on the other hand, and to the two pressure bodies 13, 13a on the respective connection points, such that during operation, that is to say during drawing, the damping body 24 may move between the pressure bodies 13, 13a. The pressure bodies 13, 13a here oscillate to and fro, specifically about the respective articulation points to which the ties 20, 21, 22, 23 are in each case connected. The greater the tensile force becomes, for example, the smaller is the angle α between the respective flexible tie 20, 21, 22, 23 and an imaginary vertical line which can be seen in FIG. 5. The oscillation-insulating function is assumed here in each case by the horizontally disposed damping body 24 in the embodiment as per FIG. 1, or the damping bodies 24 in the embodiment as per FIGS. 2 to 4. As the tensile force increases, the angle α decreases (FIG. 5) on account of which the compressive load of the damping body 24, which is configured as a hollow rubber spring, decreases in a proportional manner to the tensile force. In this manner it is practically possible to introduce high tensile forces —large pre-tensioning forces in the case of heavy drawing work—into the piling and drawing apparatus, without overloading the damping body 24. Simultaneously to the churning operation of the damping body 24, on account of the geometrically disposed lever-arm elements 20, 21 and/or 22, 23 a pendulum movement of the lateral pressure bodies 13, 13a about the upper articulations 40 and/or 41 takes place. On account thereof, even at the highest tensile load, the vertical oscillation introduced from the piling and drawing apparatus is eliminated and not transmitted into the load cable of the load-bearing means 3, on account of which damaging oscillations can be kept away from the load-bearing means 3, for example a crane hook. The lower articulations are identified with 42, 43 in FIG. 5. In this manner, an oscillatory parallelogram, between the side faces of which formed by the pressure bodies 13, 13a the damping body 24 or the damping bodies is/are disposed, is created.

The features which are described in the claims and in the description and which are evident from the drawing, may both individually and also in arbitrary combinations be substantial in the implementation of the invention.

LIST OF REFERENCE SIGNS

• 1 Support element
• 2 Support element
• 3 Load-bearing means
• 4 Pivot axle
• 5 Counternut
• 6 Pivot axle
• 7 Counternut
• 8 Load-bearing means
• 9 Bolt
• 10 Bolt
• 11 Bolt
• 12 Bolt
• 13 Pressure body
• 13 a Pressure body
• 14 Bolt, bearing element
• 15 Bolt, bearing element
• 16 Bolt, bearing element
• 17 Bolt, bearing element
• 18 Pressure plate
• 19 Pressure plate
• 20 Tie
• 21 Tie
• 22 Tie
• 23 Tie
• 24 Damping body, materially integral
• 25 End side
• 26 End side
• 27 Longitudinal portion, conically truncated
• 28 Longitudinal portion, conically truncated
• 29 Longitudinal portion, cylindrical
• 30 Clearance
• 31 End region
• 32 End region
• 33 Centering and guide sleeve
• 34 Centering and guide sleeve
• 35 Coupling element
• 36 Bearing
• 37 Bearing
• 38 Bearing
• 39 Bearing
• 40 Articulation
• 41 Articulation
• 42 Articulation
• 43 Articulation
• A Pivoting direction
• B Pivoting direction
• α Angle between ties, for example 20 or 21, and an imaginary vertical line

LITERATURE INDEX

• DE 724 359
• DE 675 502
• DE 28 23 953 C2
• U.S. Pat. No. 4,274,761
• U.S. Pat. No. 2,612,370
• FR 2 427 433
• GB 2 027 159 A
• GB 491,031

Recitals Contained in the Description

This list of documents listed by the applicant has been automatically generated and is included exclusively to provide the reader with improved information. The list does not form part of the German patent and/or utility model application. The German Patent and Trademark office accepts no liability for any errors or omissions.

CITED PATENT LITERATURE

• DE 2823953 C2 [0002]
• FR 2427433 [0002]
• GB 2027159 A [0002]
• U.S. Pat. No. 4,274,761 [0002]
• DE 675502 [0004]
• GB 491031 [0005]

Claims

1. Oscillation damper for vibration drivers for suspension from a load-bearing means—a crane hook or similar—which displays a damping body which is configured as a hollow spring and is composed of rubber, for example a natural rubber mixture, or of an elastomer which displays rubber-type properties, which damping body on its opposite end faces is connected to pressure bodies which are variable in their spacing and which are composed of steel, having a rigid support element which is assigned to the load-bearing means and a rigid support element which is assigned to the vibration driver, wherein the two support elements are connected in an articulated manner by way of flexible ties to each pressure body, wherein the longitudinal axes of the ties form in each case an acute angle (α) with the vertical in such a manner that this angle (α) decreases as tensile force increases, on account of which high tensile forces can be introduced onto the damping body, wherein simultaneously with the churning operation of the damping body a pendulum movement of the laterally disposed pressure bodies about the articulations of the ties, in particular about the upper articulations, takes place, on account of which, even at the highest tensile load, the vertical oscillation introduced from the piling or drawing apparatus are largely eliminated and, on account thereof, are not introducible into the tie of the load-bearing means.

2. Oscillation damper for vibration drivers for suspension from a load-bearing means—a crane hook or similar—which displays a damping body which is configured as a hollow spring and is overall materially integral, and is composed of rubber, for example a natural rubber mixture, or of an elastomer which displays rubber-type properties, which damping body on its opposite end faces is connected to pressure bodies which are variable in their spacing and which are composed of steel, having a rigid support element which is assigned to the load-bearing means and a rigid support element which is assigned to the vibration driver, wherein the two support elements are connected in a movable manner by way of rigid lever-arm elements to each pressure body in such a manner that the damping body, with the pressure bodies, in relation to the lever-arm elements is disposed in an oscillatory manner between the two support elements which are disposed so as to be spaced apart from one another.

3. Oscillation damper for vibration drivers for suspension from a load-bearing means—a crane hook or similar—which displays a plurality of damping bodies, of same shape and same size, which are configured as a hollow spring and are overall materially integral in each case, and are each composed of rubber, for example a natural rubber mixture, or of an elastomer which displays rubber-type properties, which with their longitudinal axes are disposed so as to be parallel to one another, and disposed so as to be spaced apart from one another, which on their opposite end faces are connected to pressure bodies which are variable in their spacing and which are composed of steel, having a rigid support element which is assigned to the load-bearing means and a rigid support element which is assigned to the vibration driver, wherein the two support elements are connected in a movable manner by way of flexible ties to each pressure body in such a manner that the damping bodies, with the pressure bodies, in relation to the ties are disposed in an oscillatory manner between the two support elements which are disposed so as to be spaced apart from one another, wherein the longitudinal axes of the respective ties form in each case an acute angle (α) with the respective vertical in such a manner that this angle (α) decreases as tensile force increases, on account of which high tensile forces can be introduced onto the damping bodies, wherein simultaneously with the churning operation of the damping bodies a pendulum movement of the laterally disposed pressure bodies about the articulations of the ties, in particular about the upper articulations, takes place, on account of which, even at the highest tensile load, the vertical oscillation introduced from the piling or drawing apparatus are largely eliminated and, on account thereof, are not introducible into the tie of the load-bearing means.

4. Oscillation damper according to claim 1, characterized in that the lever-arm elements or the flexible ties, on their end regions, are connected to the assigned support element and to the respectively assigned pressure body by way of articulations.

5. Oscillation damper according to claim 1, characterized in that the lever-arm elements are steel cables or steel-cable loops which are flexibly connected in an articulated manner to the assigned support element by way of bolt bearings, on the one hand, and to the assigned pressure on the other hand.

6. Oscillation damper according to claim 5, characterized in that the longitudinal axes of the bolt bearings run parallel to one another.

7. Oscillation damper according to claim 1, characterized in that the lever-arm elements are endless loops of steel cables.

8. Oscillation damper according to claim 1, characterized in that the lever-arm elements are rigid bodies, in particular composed of steel, which on their end regions display bearings about which said lever-arm elements can oscillate.

9. Oscillation damper according to claim 1, characterized in that the damping body or the damping bodies is/are disposed in a parallelogram linkage system which is capable of oscillation, which is/are formed by the pressure bodies, on the one hand, and by the bearings of the lever-arm elements, on the other hand.

10. Oscillation damper according to claim 1, characterized in that the damping body and/or the damping bodies is/are designed so as to be barrel-shaped and each displays one clearance passing therethrough which has/have engaging therethrough at least one coupling element which is connected to the two pressure plates.

11. Oscillation damper according to claim 10, characterized in that the coupling element is composed of a material which displays resilient properties, in particular of an elastic plastic material.

12. Oscillation damper according to claim 1, characterized in that the two pressure bodies are connected to one another by a coupling element which is configured as a steel cable and which axially engages through the damping body or the damping bodies.

13. Oscillation damper according to claim 1, characterized in that the coupling element is a helical spring which is under tensile load, is composed of steel and is configured with one or multiple windings.

14. Oscillation damper according to claim 1, characterized in that the oscillation damper, in its central longitudinal region, is cylindrical, and a longitudinal portion which, toward the ends, tapers off in a conical manner, in each case adjoins this region.

15. Oscillation damper according to claim 1, characterized in that the clearance which passes through the respective damping body is cylindrical in the end regions and displays a portion which is configured as a truncated cone and widens in the direction toward the centerline of the respective damping body, wherein in these regions, in the central region, a cylindrical longitudinal portion adjoins.

16. Oscillation damper according to claim 1, characterized in that the pressure bodies, with rigid elements which are configured as centering sleeves or guide sleeves, in each case engage in a form-fitting manner in clearances of the damping body and center the respective damping body in relation to the pressure bodies.

17. Oscillation damper according to claim 1, characterized in that the coupling element or the coupling elements is/are releasably connected to the respective pressure body by way of bolts or bearings which run transversely to the longitudinal axis of the respective coupling element.

18. Oscillation damper according to claim 1, characterized in that the pre-tensioning of the coupling element is adjustable in such a manner that one or both bearings for the coupling element is adjustable on the respective pressure body and is also arrestable in the position desired in each case.

19. Oscillation damper according to claim 1, characterized in that the support elements are composed of two steel plates composed of steel which are spaced apart from one another, and between which the lever-arm elements, in particular steel cables, which are configured as endless loops are disposed on the bolts.