WO2009067725A1

WO2009067725A1 - Wear element for an anti-skid chain

Info

Publication number: WO2009067725A1
Application number: PCT/AT2008/000387
Authority: WO
Inventors: Ägyd Pengg; Markus Rosenberger
Original assignee: Pewag Schneeketten Gmbh & Co Kg
Priority date: 2007-11-27
Filing date: 2008-10-23
Publication date: 2009-06-04
Also published as: AT505286B1; AT505286A4

Abstract

The invention relates to a wear element, which can be mounted on a connecting ring (3) of an anti-skid chain (1) connecting the chain lengths (2) of a chain mesh with each other, wherein the wear element (4) comprises at least two parts (5, 6) that can be connected to each other and has limbs (7, 8) disposed in a star shape, and wherein the at least two parts (5, 6) at least in some areas comprise connecting sections that are configured congruent with each other and that can be joined, wherein the connecting sections are configured to be self-centering, in a connected state of the wear element the limbs of the one part running congruently with the limbs of the other part.

Description

WEARING ELEMENT FOR A SLIP CHAIN

The invention relates to a wear element which can be mounted on a connecting ring of a non-skid chain, which chain strands of a running network with each other, wherein the wear element has at least two interconnected parts with star-shaped legs and the at least two parts at least partially congruent mutually formed, joinable connecting portions ,

A wear element for a tire protection chain, which can be mounted on an annular chain link, has become known for example from DE 23 101 73 A. The known wear part has a cuboid base body, in which receiving openings are provided for portions of the annular chain link. A disadvantage of the known wear element is especially that it is very difficult to assemble due to the design. This is especially true with regard to a subsequent assembly of pages of an end user.

From EP 0278082 Al a wear element of the type mentioned is known, in which the two parts of the wear element are welded together after insertion into the interior of a ring of the anti-skid chain. The disadvantage here is, above all, that the two parts must be positioned accurately to each other before welding, with the parts must be fixed during welding in the desired end position. For this reason, a relatively high assembly costs associated with the known embodiment, which makes a simple retrofitting by an end user difficult or impossible.

The US 1 51 439 also relates to a wear element for an anti-skid chain, said wear element has a star-shaped portion on which a chain member passing through a pin is arranged. At one end of the pin is a flattened, mushroom-shaped head attached to a tire-facing side of the chain link.

The AT 239 664 B shows a wear element for an anti-skid chain, wherein the wear element has a star-shaped, welded to the anti-skid chain Trägerplarte from which protrudes a conical wear body in the direction of the road. Even with this wear element, it is disadvantageous that a subsequent retrofitting a Anti-skid chain usually can not be carried out by an end user himself.

It is therefore an object of the invention to provide a wear element which can be used to easily retrofit existing anti-skid chains.

This object is achieved with a wear element of the aforementioned type according to the invention that the connecting portions are formed self-centering, wherein in an assembled state of the wear element, the legs of one part congruent with the legs of the other part.

Due to the solution according to the invention, the parts of the wear element can be applied to the connecting ring for mounting from two opposite sides and then connected to one another. By the star-shaped arrangement of the legs is achieved that the area between two adjacent legs of a part can accommodate a bow portion of a chain link of a suspended in the connecting ring chain strand.

The self-centering of the two parts can be easily achieved in that the two connecting sections each have a spur gear.

With regard to the assembly, it has proven to be advantageous for the parts to be radially symmetrical with respect to their longitudinal center axes extending normal to the longitudinal extension of their legs. Radial symmetry is understood in this document to mean that a rotation of an object by a certain angle smaller than 360 ° brings the object back to itself. This embodiment has the advantage that thereby several equivalent mounting positions of the parts to each other are possible. Thus, the mechanic is not forced to have to assemble the parts in only one specific position.

Particularly advantageous in this case, especially in anti-skid chains with three chain strands whose end members each engage in the connecting ring, proven when three legs are arranged on each part. In this way, a bow of each end member of the three chain strands held together by the connecting ring can engage in exactly one area located between two adjacent legs of the parts. Furthermore, it is advantageous if the parts are each formed 120 ° radially symmetrical with respect to their respective longitudinal central axes, since then the areas between two adjacent legs of a Part of the same size, which greatly simplifies the adjustment and handling of the wear element during assembly.

In the sense of a simple assembly, the two parts can be connected to each other by means of a connecting element, in particular a screw. Alternatively and additionally, it is also possible to glue the parts together.

In order to achieve the greatest possible durability and good wear properties, the parts are preferably made of metal.

The invention together with further advantages is illustrated in more detail below with reference to some non-limiting exemplary embodiments, which are illustrated in the drawing, in which they show schematically:

Figure 1 shows a portion of a skid chain with a wear element according to the invention in a first perspective view.

FIG. 2 shows the section of the anti-skid chain from FIG. 1 with a wear element according to the invention in a second perspective view; FIG.

Fig. 3 is a plan view of the portion of Fig. 2;

Fig. 4 is a section along the line A-A in Fig. 3;

5 shows a perspective view of a first part of the wear element according to the invention;

Fig. 6 is another perspective view of the part of Fig. 5;

FIG. 7 shows a plan view of the first part from the direction I in FIG. 5; FIG.

Fig. 8 is a section along the line A-A in Fig. 7;

9 is a side view of the first part;

FIG. 10 shows a plan view of the first part from the direction II in FIG. 9; FIG. 11 is a perspective view of a second part of the wear element according to the invention;

Fig. 12 is another perspective view of the second part of Fig. 11;

Fig. 13 is a plan view of the second part from direction I in Fig. 11;

Fig. 14 is a section along the line A-A in Fig. 13;

Fig. 15 is a side view of the second part and

FIG. 16 shows a plan view of the second part from the direction II in FIG. 15. FIG.

According to FIGS. 1 and 2, a non-skid chain 1, of which only one connecting ring 3 and one chain link are shown here, has a running net, which is formed by chain strands 2, which are held together by connecting rings 3. The invention relates in particular to anti-skid chains, in the connecting rings 3 each three chain strands 2 are mounted, although it is not limited to such an embodiment. At the connecting rings 3, an inventive wear element 4 is arranged.

The wear element 4 has two parts 5, 6 with radially arranged legs. The thicker, shown in more detail in Figures 5 - 10 part 5 is provided as the upper part of the wear member 4 to transmit in a mounted state, the traction and minimize the wear of the connecting ring 4 and therefore comes into contact with the road. The thinner part 6 shown in more detail in FIGS. 11 to 16 is provided as a lower part and serves to fix the upper part 5 to the connecting ring 4. In an assembled state, the lower part 6 is arranged between the connecting ring 4 and the tread of a vehicle tire. In order to achieve the greatest possible durability and good wear properties, the parts 5, 6 are preferably made of metal. In principle, however, it would also be possible to produce the parts 5, 6 from a high-strength plastic.

As shown in Figures 3, 7, 10 and 13, projecting the legs 7 and 8 of the parts 5 and 6 each in the radial direction from a longitudinal center axis of the parts 5 and 6 to the outside, wherein the longitudinal extents of the legs 7, 8 of a part 5, 6 lie substantially in a common plane. In FIGS. 5, 6, 11 and 12, the above-mentioned longitudinal central axis is designated by a or a '. Furthermore, the parts 5, 6 can each be made with respect to their normal lengthwise extension. be of their legs 7, 8 extending longitudinal central axes a, a 'formed radially symmetrical. In the illustrated variant, the parts 5, 6 each have three legs which are arranged radially symmetrically 120 ° with respect to the longitudinal center axes a, ä of the parts 5, 6. Thus, the legs 7 can be made to coincide with the legs 8 by a rotation of 120 ° about the axis a and a ', whereby the assembly process is substantially simplified.

Furthermore, the two parts 5, 6 each have a connecting portion 9 or 10, wherein the connecting portions 9 and 10 can be joined together. The illustrated connecting portions 9, 10 pass through the opening of the connecting ring 4 and are formed at their edges congruent to each other. The connecting portions 9, 10 are self-centering, so that in an assembled state of the wear element, the legs 7 of the one part 5 are congruent with the legs 8 of the other part 6. For purposes of self-centering, the connecting portions 9, 10 each have a spur gear teeth 9 ', 10'.

For assembly, the two parts 5, 6 are brought from different sides of the opening plane of the connecting ring 4, the two connecting portions 9 and 10 joined together. Then the parts 5 and 6 are connected to each other by means of a connecting element, for example with the screw mentioned below. In an assembled state of the connecting ring 4 is then arranged between the substantially congruent opposite legs 7, 8 of the two parts 5, 6. Furthermore, after assembly, the end portion of the hinged in the connecting ring 4 chain link of the chain strand 2 in one of two immediately adjacent legs 7 and 8 of the parts 5 and 6 and a portion of the connecting ring 4 limited area. The legs 7, 8 and the connecting ring 4 thus form a pocket or a compartment for the hinged in the connecting ring 4 chain link of the chain strand. 2

According to FIG. 7, the part 5 has a threaded bore 11 for a screw. The part 6 has, as shown in Fig. 14, a in an assembled state of the wear element 4 with the bore 11 aligned bore 12 for receiving the designated in Fig. 4 with 13 screw. The head of the screw 13 can here, as shown in Fig. 4, be arranged on the side of the lower part 4, so that it faces in an assembled state of the tread of the tire. The screw 13 may be glued as an additional backup. Instead of a screw connection, it is also possible to provide a pure adhesive connection between the parts 5 and 6. In this case, it is advantageous if one of the connecting sections 9 or 10 conical and the other congruent thereto is trained. Of course, other connection methods and elements, such as riveting or joining the two parts 5, 6 by means of a snap mechanism with attached to one of the connecting portions 9 or 10 barbs, which cooperate with a corresponding holding portion of the other part. In principle, a welding of the parts 5 and 6 would be possible with each other.

The parts 5, 6 can, as shown, each be formed in one piece. However, a multi-part design of the parts 5, 6 in principle possible, and these can be assembled in the context of assembly of their individual components.

Finally, it should be mentioned that the variant of the invention shown in FIGS for a anti-skid chain, in the connecting rings 3 each three chain strands 2 are mounted, although the solution according to the invention is not limited to such an embodiment. For example, four chain strands 2 could be hooked into the connecting ring 3, in which case the wear element 4 would then have four legs 7 and 8, respectively.

Claims

1. wear element, soft on egg nen connecting ring (3) of a skid chain (1), which chain strands (2) of a running network interconnects, can be mounted, wherein the wear element (4) at least two interconnected parts (5, 6) arranged in a star shape Has legs (7, 8) and the at least two parts (5, 6) at least partially congruent mutually formed, joinable connecting portions, characterized in that the connecting portions are formed selbstzentrierend, wherein in an assembled state of the wear element, the legs of the one part congruent run with the thighs of the other part.

2. Wear element according to claim 1, characterized in that the two connecting portions each have a spur toothing for self-centering of the two parts (5, 6).

3. Wear element according to claim 1 or 2, characterized in that the parts are each formed with radial symmetry with respect to their normal to the longitudinal extent of their legs extending longitudinal central axes.

4. wear element according to claim 3, characterized in that the parts are each formed 120 ° radially symmetrical with respect to their respective longitudinal central axes.

5. Wear element according to one of claims 1 to 4, characterized in that the parts each have three legs (7, 8).

6. Wear element according to one of claims 1 to 5, characterized in that the parts (5, 6) by means of a connecting element, in particular a screw (13), are connectable to each other.

7. Wear element according to one of claims 1 to 6, characterized in that the parts (5, 6) are made of metal.