RU2780504C1 - Tyre chain of a special vehicle provided with at least one plate with a grouser, tyre of a special vehicle, and plate with a grouser for a tyre chain of a special vehicle - Google Patents

Abstract

FIELD: vehicles.

SUBSTANCE: tyre chain (1) comprises multiple plates (3) with a grouser, interconnected directly or indirectly by branches (5) of the chain. In order to improve adhesion, each plate (3) with a grouser comprises at least one grouser (37) extending from the top (49) of the plate (3) with a grouser. At least one of the plates (3) with a grouser comprises a plate main body (35) with at least two receiving tools (19), wherein the corresponding closing link (21) of the branch (5) of the chain is placed in each of said tools.

EFFECT: facilitated manufacture of the tyre chain and increase in the stability thereof.

14 cl, 11 dwg

Description

The invention relates to a wheel chain for special vehicles, in particular for forestry vehicles, tractors and wheel loaders. In addition, the invention relates to a special vehicle tire and a lug plate for a special vehicle wheel chain.

Currently, special forestry vehicles use wheel chains containing large rings applied to the bearing surfaces of the tires to increase the degree of grip on slippery ground. These rings are made of rather thick wire with a diameter of 19 mm to more than 30 mm. Due to the increased requirements for soil compaction caused by special forestry vehicles, tires of ever larger sizes are being used. Until now, larger rings are simply used for larger tires. However, as sizes increase, these rings become more difficult to manufacture. So, due to the large diameter, heat treatment becomes problematic. In addition, higher bending forces are required.

Therefore, the invention is based on the object of providing such a special vehicle wheel chain, in particular for forestry vehicles, which, despite the constant increase in tire dimensions, is easy to manufacture and also, in particular, easily scalable depending on the size of the tire. .

According to the invention, this problem is solved by a wheel chain for a special vehicle, in particular for forestry vehicles, tractors or wheel loaders, comprising a plurality of lug plates connected directly or indirectly to each other by chain branches, each lug plate comprising at least one traction lug that extends from the top side of the grouser plate. For the above-mentioned special vehicle tire according to the invention, the problem is solved by providing the special vehicle tire with a wheel chain for a special vehicle according to the invention.

Thanks to the technical solution according to the invention, it is possible to solve the above-mentioned problems of the known wheel chains of special vehicles. Grouser plates are easy to manufacture. In addition, the grouser plates have good load resistance, in particular compressive strength.

A grouser plate is possible, including in particular a main body substantially in the form of a plate. In other words, the main body is formed by a plate which is flat and defines the plane of the plate. In particular, the main body, preferably the entire grouser plate, can be made of metal, in particular sheet metal. The top side of the grouser plate is that side which, with the special vehicle wheel chain installed, extends further from the special vehicle tire and contacts the ground. The upper side is provided with at least one lug. The lower side of the lug plate opposite the upper side, when the special vehicle wheel chain is installed, can rest against the supporting surface of the special vehicle tire. The underside may comprise or be identical to the base surface of the lug plate.

It is possible to further improve the solution according to the invention by means of various embodiments, which are preferred in each case and can be combined with each other in any way. The forms of these embodiments and their associated advantages are discussed below.

According to the first preferred embodiment of the wheel chain of a special vehicle, it is possible to weld at least one lug to the lamellar main body of the lug plate. Welding allows you to quickly and reliably connect the grouser to the main body. As an alternative or addition to this, it is possible to screw at least one lug to the main body or to attach it to the main body in another way. As an alternative to manufacturing the main body and at least one lug separately and then joining the parts, it is possible to manufacture the at least one lug integrally with the main body, in particular by forging.

At least one of the lug plates may comprise a rectangular, in particular square, main body. Alternatively, a round, oval or polygonal main body is also possible. In this case, the shape does not refer to the cross section of the plate, but to the planar extent of the plate as seen from above on the upper side or on the lower surface. In other words, the base resting on the supporting surface of the tire in the installed state has an appropriate shape.

However, the rectangular, in particular square, shape of the main body does not preclude the presence of rounded corners. Rather, it is essential that the main body has 4 sides, which are arranged in relation to each other essentially like the sides of a rectangle.

To reduce the weight of the lug plate and/or to save material during its manufacture, at least one of the lug plates may comprise a plate main body having at least one recess extending inside the main body in a direction transverse to the plate plane.

According to a preferred embodiment, the recess extends through the main body. In other words, the main body includes an opening or lug that extends through the main body. At least one recess preferably has a round shape. If the grouser plate comprises a plurality of lugs, then at least one recess is preferably located between these lugs, preferably in the middle of the plate.

In order to simply and securely connect at least one of the grouser plates to the chain legs, at least one of the grouser plates comprises a plate-shaped main body having at least two receiving devices, each of which contains a master link of the chain leg. The master links of the chain legs are preferably welded to the main body of the grouser plate. The receiving devices can be made in the form of recesses in the plate, due to which the main body is open on the sides.

As an alternative to, or in addition to, the attachment of the master links of the chain branches in the holders, it is also possible to directly connect the master links to the grouser plate. To do this, at least one master link can be connected to the grouser plate, in particular to the main body of the grouser plate, by welding or in another way. To simplify the manufacturing process, the lug plate, in particular its main plate, may be provided with at least one recess in which the master link may be placed. This allows you to set the position of the master link, and when connected, the master link is protected from displacement.

It is not necessary to connect exactly the closing link of the chain branch to the lug plate. If at least one chain leg has at its end connected to the lug plate an element that is not a chain link, it is possible to connect the chain leg to the lug plate by means of this element. For example, a chain branch may be provided with a ring or a staple at the end. In this case, the ring or shackle may be connected to the grouser plate. In this case, any of the above options can be used to fasten the chain branch to the lug plate.

The lug height, measured in particular from the upper side of the main body to the end of the lug, preferably corresponds to at least twice the thickness of the lamellar main body of the lug plate. Preferably, the lug height is at least 40 mm, particularly preferably between 50 mm and 70 mm. The thickness of the lug preferably corresponds to the thickness of the plate. At least one lug and at least one main body may be made from the same starting material. The lug length is preferably at least 60 mm, particularly preferably at least 80 mm.

To further improve the degree of traction, at least one lug may be provided with a stud extending from the rest of the lug. At least one lug is preferably directed parallel to one side of the rectangular main body. Particularly preferably, at least one lug plate is equipped with four lugs, each of the lugs being directed parallel to one of the sides of the rectangular shape. In this case, the lugs are preferably located at equal distances from the center of the grouser plate. Between the four lugs there may be a recess which preferably extends completely through the main body. In a top view of the grouser plate, the lugs may have an elongated shape. Alternatively, a zigzag shape, a triangle shape, an arrow shape or another shape is also possible for them.

In order to obtain a stable grouser plate, at least one of the grouser plates may comprise a plate-shaped main body having a thickness of at least 15 mm, preferably 20 to 30 mm. The overall height of the lug plate, which consists of the thickness of the main body and the lug height, is preferably at least 70 mm, particularly preferably at least 90 mm. The main body is formed in this case preferably from sheet metal, as well as at least one lug.

To further improve the degree of grip, the special vehicle wheel chain may comprise at least two rows of lug plates extending along the circumferential direction of the special vehicle wheel chain. In this case, it is possible to arrange at least two lug plates next to each other transverse to the circumferential direction, in other words, at the same height. In this case, in particular, at least two lug plates can be connected to each other in the transverse direction. Alternatively, the wheel chain according to the invention of the special vehicle may also comprise one row or more than two rows of lug plates. If there are at least two rows, instead of being at the same height, it is possible to arrange the lug plates of both rows offset relative to each other in the circumferential direction. If there are more than two rows, it is also possible to combine them. That is, for example, in the case of three rows, the lug plates of two of the rows may be located at the same height in the circumferential direction. The third row grouser plates can be offset relative to the other grouser plates in the circumferential direction.

Each of the grouser plates can have four sides, with each grouser plate connected on each of the three sides by chain branches to at least one adjacent grouser plate, and on one side to at least one side chain or, respectively, side branch.

According to a preferred embodiment, the wheel chain of the special vehicle is symmetrical with respect to a plane of symmetry running perpendicular to the tire axis. In the unmounted state, this plane of symmetry is perpendicular to the plane of movement of the network formed by the wheel chain of the special vehicle, while being parallel to the longitudinal direction or, respectively, the circumferential direction of the wheel chain of the special vehicle. Due to the symmetrical design, the wheel chain of the special vehicle need not be connected to the direction of travel. In other words, during installation, there is no need to follow the intended direction of movement.

To reduce or avoid flexing of the lug plate under load, the at least one lug plate is preferably smaller than the bearing surface of the tire. The size of the bearing surface of the tire is determined by the size of the tire for which the special vehicle's wheel chain is provided. It should be noted that each wheel chain of a special vehicle is usually manufactured for a certain type of vehicle tires. Vehicle tire types are standardized and known to those skilled in the art.

It is possible to arrange at least one lug in such a way that it overlaps the receiving device for the master link or other element of the chain branch. In this case, the lug with its longitudinal side can extend across the direction along which the receiving device associated with it extends into the material of the main body. This direction is preferably the same direction as the depth of the receptacle. In this case, the thickness of the lug may substantially correspond to the depth of the receiving device. Thanks to the grouser that overlaps the receiving device, a compact design of the grouser plate is possible. In addition, the at least one lug may form a protection for the receptacle that it overlaps. Similarly, at least one lug may protect a master link placed in the receiver or another part of the chain run placed in the receiver.

At least one lug, which is located in such a way that it overlaps the receiving device, may contain on its underside a recess extending inside the corresponding lug. The underside of the grouser is the side that faces the main body. The recess has a length that preferably corresponds to at least the width of the master link receptacle. For simplicity, you can have a recess length equal to the length of the lug stud. In the ready installed state, the master link of the chain branch can protrude up to the notch. In this case, the height of the recess is preferably chosen such that the closing link located in the receiving device does not run into the grouser.

In the following, the invention will be explained in more detail with reference to the preferred embodiments with reference to the drawings. The combinations of features exemplified in the embodiments can be appropriately supplemented with other features according to the above embodiments for a specific application. It is also possible, according to the above embodiments, to omit individual features of the described embodiments if the impact of this feature in a particular application case does not matter.

For elements that perform the same function and / or have the same design, the same designations are always used in the drawings.

Shown:

fig. 1 is a plan view of part of a first preferred embodiment of the wheel chain of a special vehicle according to the invention;

fig. 2 is an enlarged view of the lug plate of the wheel chain of the special vehicle of FIG. one;

fig. 3 is a side view of the lug plate of FIG. 2;

fig. 4 is a perspective view of the grouser plate of the first embodiment without chain legs;

fig. 5 the main body of the first embodiment of the grouser plate;

fig. 6 is a side view of the lug of the first embodiment of the lug plate;

fig. 7 is an unidentified perspective view of a second embodiment of a wheel chain of a special vehicle according to the invention;

fig. 8 is a second embodiment of a special vehicle wheel chain in an installed state on a special vehicle tire;

fig. 9 is a perspective view of a third embodiment of a special vehicle wheel chain according to the invention with a third embodiment of lug plates;

fig. 10 a main body for a third embodiment of a grouser plate according to the invention; and

fig. 11 is a schematic representation of a lug according to the third embodiment.

Described below with reference to FIG. 1 is a first embodiment of the wheel chain of a special vehicle according to the invention. Thereafter, with reference to FIG. 2-6 details the lug plate.

Wheel chain 1 of a special vehicle contains a plurality of plates 3 with grouser. The lug plates 3 are connected to each other by chain branches 5 . Some of the chain branches 5 serve as longitudinal connections 7 which run parallel to the circumferential direction U of the wheel chain 1 of the special vehicle.

The chain branches 5 arranged transversely to the circumferential direction U and between two adjacent lug plates 3 serve as cross braces 9 of the wheel chain 1 of the special vehicle. The other chain branches 5 running transversely to the circumferential direction U serve as side branches 10 of the wheel chain 1 of the special vehicle. By means of side branches 10, the lug plates 3 can be indirectly connected to each other.

The wheel chain 1 of the special vehicle comprises two rows 11 of grouser plates 3, each row 11 running parallel to the circumferential direction U. Two grouser plates 3 from both rows 11 are arranged opposite each other across the circumferential direction U. In other words, two plates each 3 with grouser are located at the same height along the circumferential direction U.

The wheel chain 1 of the special vehicle is symmetrical with respect to a symmetry plane 15 running parallel to the circumferential direction U and perpendicular to the network plane 13 defined by the wheel chain 1 of the special vehicle. In the installed state of the chain, the symmetry plane 15 extends perpendicular to the tire axis (not shown here).

As an alternative to the symmetrical embodiment of the wheel chain 1 of the special vehicle, in which the two lug plates 3 are arranged at the same height along the circumferential direction U, other embodiments are also possible. For example, both rows 11 could be offset relative to each other along the circumferential direction U, in which case the cross braces 9 could connect the lug plates 3 to each other in a zigzag arrangement.

The grouser plates 3 are essentially square. That is, they comprise longitudinal sides 17, of which each two are opposite each other and run parallel to each other, with two longitudinal sides 17 not lying opposite each other running perpendicular to each other.

As an alternative to the square shape, in particular a rectangular shape, a round shape or a polygonal shape are possible. In the first embodiment, the grouser plates 3 are directed within the wheel chain 1 of the special vehicle in such a way that two longitudinal sides 17 run parallel to the circumferential direction U and two longitudinal sides 17 run transverse to the circumferential direction U.

Below with reference to Fig. 2-6 the design of the lug plate 3 according to the invention is described.

The lug plate 3 comprises a total of eight receivers 19 for the master links 21 of the chain branches 5 . The receiving devices 19 are made, in particular, in the form of slots.

The master links 21 of the branches 5 of the chain can be inserted into the receiving devices 19 and welded to the plate 3 with a grouser. Therefore, the master links 21 are connected to the regions of the lug plate 3 surrounding the receptacles by welded joints 23. The receptacles 19 preferably extend straight from the longitudinal sides 17 into the material of the lug plate 3. In this case, each receiving device 19 preferably extends across the longitudinal side 17 on which it is located.

The receivers 19 extend through the material of the grouser plate 3 across the plane 25 of the plate defined by the grouser plate 3. The depth 27 of the receptacle 19, which is measured perpendicular to the respective longitudinal side 17 and parallel to the plane 25 of the plate, is preferably about one third to two thirds, particularly preferably one third to one half of the length 29 of the master link 21. The width 31 of the receptacle 19 is preferably chosen to be so that it is not much greater than the thickness 33 of the master link 29.

Each grouser plate 3 preferably has a plate-shaped main body 35 and lugs 37. The main body 35 without grouser 37 is shown in FIG. 5. The main body 35 is preferably flat and defines the plane 25 of the grouser plate 3. The main body 35 is preferably formed from metal, in particular sheet metal. The main body 35 substantially defines the shape of the lug plate 3, that is, in the example shown, a square shape.

The thickness 39 of the main body 35 is preferably at least 15 mm, particularly preferably 20 to 30 mm. In the middle of the main body 35, it is preferably provided with a recess 41 in the form of a hole. Thus, on the one hand, it is possible to save material during manufacture, which reduces the cost of the lug plate 3. On the other hand, the recess 41 reduces the weight of the grouser plate 3, so that the special vehicle wheel chain 1 equipped with the grouser plates 3 can have a lower weight as a whole. vehicle.

The recess 41 extends through the main body 35 across the plane 25 of the plate. The diameter 43 of the recess 41 is preferably less than half the length 45 of the side of the main body 35. The diameter 43 is preferably greater than one third of the length 45 of the side.

The main body 35 or, respectively, the lug plate 3 has an underside 47. The lug plate 3 can rest with its underside 47 on the bearing surface of a special vehicle tire (not shown). The underside 47 is preferably flat. Therefore, it forms the base area 48 of the lug plate 3 or the main body 35, respectively. tire surface of a special vehicle.

The lugs 37 extend from the upper side 49. In particular, the lugs 37 extend from the upper side 49 of the lug plate 3 across the plane 25 of the plate. The lugs 37 are preferably welded to the main body 35. In particular, they can be welded to the top side 49 of the main body 35.

Alternatively, the lugs 37 may also penetrate or pass through the main body 35 for a certain distance. It is then possible to weld them to the main body 35 on the upper side and/or on the lower side 47. As an alternative to welding, it is also possible to connect the lugs 37 to the main body 35 in another way. For example, the lugs 37 may be connected to the main body 35 via a threaded connection.

The first embodiment of the wheel chain 1 of a special vehicle is provided with lug plates 3, each of which contains four lugs 37. The lug 37 have a rectangular cross section when viewed across the plane 25 of the plate.

Each lug 37 is located near the longitudinal side 17 of the main body 35. In this case, each lug 37 is located between the corresponding longitudinal side 17 and the recess 41. In this case, the longitudinal sides 51 of the lug 37 run parallel to that longitudinal side 17, which is closest to the corresponding lug 37. In this case, each lug 37 is located in the middle between both receiving devices 19 of the corresponding longitudinal side 17. In this case, the longitudinal side 51 of the lug 37 can be flush with the closed ends of the receiving device 19. This can be seen, for example, in FIG. 2 and 4. However, such an arrangement is not necessary. It is also possible to position the lugs 37 closer to the receiving device 41 or closer to the sides 17. It is also not necessary to run parallel to the sides 17. The lugs 37 can also run at an angle to the sides 17.

The lugs 37 are preferably made of the same material as the main body 35. Therefore, the lugs 37 may have a lug thickness 53 that matches the thickness 39 of the main body 35. The lug height 55, which is measured from the top side 49 to the end of the lug opposite the top side 49 37 is preferably at least twice the thickness 39 of the main body 35. The lug height 55 is preferably at least 40 mm, preferably 50-70 mm.

At its end opposite the upper side 49, the grouser may be provided with a stud 57. The stud 57 may further improve the degree of grip of the wheel chain 1 of the special vehicle. The stud 57 preferably has a length 59 which corresponds to one quarter to one half of the lug length 61. In this case, the length 61 of the lug is measured parallel to the longitudinal sides 51.

The size of the lug plate 3, in particular its extension in a plane parallel to the plate plane 25, is preferably smaller than the bearing surface 63 of the tire of the special vehicle for which the special vehicle wheel chain 1 is provided. When the special vehicle wheel chain 1 is manufactured, the size of the special vehicle tire for which the special vehicle wheel chain 1 is provided is generally known. Therefore, it is possible to adapt the dimensions of the wheel chain 1 of the special vehicle, in particular the lug plates 3 . The bearing surface 63 of the tire is shown in dotted lines in FIG. 1. By making the lug plate 3 smaller than the tire bearing surface 63, the lug plates 3 are prevented from being deformed too much when the tire is rolling.

The second embodiment of the wheel chain 1 of the special vehicle according to the invention will now be described with reference to figures 7 and 8. Wherein, in FIG. 7 the wheel chain 1 of the special vehicle is shown in an unidentified state, and in FIG. 8 - in the installed state on the tire 65 of a special vehicle, and for greater clarity in FIG. 8 side branches 10 of the wheel chain 1 of the special vehicle are not shown.

In the following, only the differences between the wheel chain 1 of the special vehicle and those described with reference to FIGS. 1-6 of the first embodiment.

The lug plates 3 of the second embodiment are connected to each other in each case by only one chain branch 5 . In other words, each lug plate 3 is connected by one transverse link 9 to that lug plate 3 adjacent to it in the direction transverse to the circumferential direction U. In the circumferential direction U, each lug plate 3 is connected by means of a longitudinal connection 7 to the preceding and with the next plate 3 with a grouser.

Each grouser plate 3 is connected to two lateral branches 10, each of the lateral branches 10 of the grouser plate 3 being connected to the side branch 10 of the grouser plate 3 adjacent to it in the circumferential direction U via a ring 67. As a result of the arrangement of the chain branches 5 described above, each grouser plate 3 contains on one side two receiving devices 19 for connection with side branches 10, and on each of the other three sides, one receiving device 19 for chain branches 5 for direct connection with the following plates 3 with grouser.

Each grouser plate 3 is provided with two arrow-shaped grouser 37, both of the arrow-shaped grouser 37 pointing in the same direction. Each arrow-shaped lug 37 is formed from two rectangular blocks 69 arranged at right angles to each other. the same height, directed in opposite directions and away from each other. However, this location is not required. The lugs 37 may also have shapes other than the arrow shape described above. For example, they can also have a zigzag shape, and such a zigzag shape can be obtained by using three blocks 69 to form a grouser 37.

The grouser plates 3 according to the second embodiment can be made without a recess 41. However, alternatively, it is also possible for the grouser plate 3 to have at least one recess 41.

With the special vehicle wheel chain mounted on the special vehicle tire 65, the circumferential direction U of the wheel chain may coincide with the circumferential direction of the special vehicle tire 65 . The circumferential direction U then extends around the axle 71 of the tire 65 of the special vehicle.

Below, with reference to figures 9-11, a third embodiment of the wheel chain 1 of a special vehicle according to the invention will be described. Meanwhile, in FIG. 9 shows a schematic perspective view of a wheel chain 1 of a special vehicle in an uninstalled state, FIG. 10 is a perspective view of the main body 35, and FIG. 11 is a schematic perspective view of the lug of the wheel chain 1 of the special vehicle of FIG. 9.

The basic structure of the wheel chain 1 of the special vehicle, consisting of the lug plates 3 and the chain legs 5, essentially corresponds to the structure of the first embodiments described with reference to figures 1-6.

For the sake of brevity, in the following, only the differences from the first embodiment of the wheel chain 1 according to the invention of the special vehicle and its components are considered.

Each of the grouser plates 3 of the third embodiment is provided with three lugs 37. The lugs 37 are arranged substantially in the same way as three of the four lugs 37 of the first embodiment. Those. two lugs 37 are arranged opposite each other in the circumferential direction U, and a third grouser 37 is located along the circumferential direction U between both of the aforementioned lugs 37. In general, the three lugs 37 form a U-shaped structure, with the three lugs 37 spaced apart from each other. Between the three lugs 37, a recess 41 extends inside the main body 35 or, respectively, through the main body 35.

Opposite that lug 37, opposite which there is no second lug 37 behind the recess 41, is a lateral concavity 73 in the main body 35, which is also a recess 41. is formed from three lugs 37.

Lateral concavity 73 extends along the plate plane 25 into the main body 35 and is made through in the direction transverse to the plate plane 25 . Between the lateral concavity 73 and the recess 41 located in the middle of the main body 35, a partition 75 of the material of the main body 35 extends. in its middle.

In the wheel chain 1 of a special vehicle, two aligned grouser plates 3 are positioned next to each other in such a way that their lateral concavities 73 are opposite each other across the circumferential direction U, with their open sides 76 pointing towards each other. In other words, the points The 74 V-shapes are turned away from each other, while the concavities 73 enclose a free surface 77 between them, which is limited in the direction transverse to the circumferential direction U by the main bodies 35, and in the circumferential direction U by chain branches 5 forming transverse links 9. Free surfaces 77 can improve the self-cleaning of the wheel chain 1 of the special vehicle, since impurities such as sludge or stones do not linger in this area.

In the circumferential direction U, two successive grouser plates 3 are in each case connected by only one chain branch 5 . Consequently, each lug plate 3 has, on its longitudinal side 17 located in the circumferential direction U, one receiving device 19 for the master link 21 of the chain branch 5. At the same time, the lugs 37 located on these sides 17 are arranged in such a way that they overlap the receiving devices 19. In this case, the lugs 37 with their longitudinal sides 51 extend across the direction in which the receiving devices 19 protrude into the material of the main body 35. This direction is the same the direction in which the depth 27 of the receptacle 19 extends. In this case, the lug thickness 53 may substantially correspond to the depth 27 of the receptacle 19. However, this is not necessary. The thickness 53 of the lugs may also be greater or less than the depth 27 of the lugs 19. The lugs 37 that overlap the lugs 19 may be in line with those lugs 19 that are open towards the grouser plate 3 opposite this plate in the direction transverse to the circumferential direction U.

The receptacles 19 which are open towards the grouser plate 3 opposite this plate in a direction transverse to the circumferential direction U can be displaced along the circumferential direction U relative to those receptacles 19 that are used to connect to the side branches 10. In other words, the receiving devices 19, open towards the opposite side, in the direction transverse to the circumferential direction U, of the lug plate 3, can be located at a greater distance 79 from each other than both receiving devices 19 opposite to them, which serve to attach the side branches 10. The last of these receiving devices devices 19 are located at a distance of 81.

At least those lugs 37 which are positioned so as to overlap the receivers 19 may have on the lower sides 83 of each a recess 85 extending inside the lugs 37. The recess 85 has a length 87 which preferably corresponds to at least the width 31 of the receiver. 19. For simplicity, a recess length 87 is possible, equal to the length 59 of the lug 37 spike.

In this case, the height 89 of the recess 85 is preferably chosen in such a way that the master link 21 located in the receiving device 19 does not collide with the lug 37. In general, the design of the lug 37, each of which overlaps the corresponding receiving device 19, ensures the compact design of the plate 3 with the lug. In addition, each of the lugs 37 forms a protection for the receiving device 19, which it overlaps. In the same way, the lugs 37 protect the master link 21 placed in the receiving device 19 or another part of the chain branch 5 placed in the receiving device 19.

Reference designations

1 special vehicle wheel chain

3 lug plate

5 chain branch

7 longitudinal connection

9 cross connection

10 side branch

11 row of grouser plates

13 network movement plane

15 plane of symmetry

17 longitudinal side

19 master link receiver

21 master links

23 welded joint

25 plate plane

27 pickup depth

29 master link

31 pickup width

33 master link thickness

35 main body

37 grouser

39 main body thickness

41 recess

43 diameter

45 main body side length

47 bottom surface

48 base area

49 upper side

51 longitudinal side of the grouser

53 lug thickness

55 lug height

57 spike

59 spike length

61 lug length

63 tire bearing surface

65 special vehicle tire

67 ring

69 block

71 axle truck tire

73 lateral concavity

74 point

75 partition

76 open side

77 free surface

79 distance

81 distance

83 underside

85 recess

87 notch length

89 notch height

U district direction.

Claims (14)

1. Wheel chain (1) of a special vehicle, in particular for forestry vehicles, tractors or wheel loaders, which contains a plurality of plates (3) with grouser, directly or indirectly connected to each other by branches (5) of the chain, each the lug plate (3) contains at least one lug (37), which extends from the upper side (49) of the lug plate (3) to increase the degree of adhesion, and at least one of the lug plates (3) contains a plate the main body (35), having at least two receiving devices (19), each of which contains, respectively, the closing link (21) of the branch (5) of the chain. 2. Wheel chain (1) of a special vehicle according to claim 1, in which at least one lug (37) is welded or screwed to the lamellar main body (35) of the lug plate (3). 3. Wheel chain (1) of a special vehicle according to claim 1 or 2, in which at least one lug (37) forms a single unit with the lamellar main body (35) of the lug plate (3). 4. Wheel chain (1) of a special vehicle according to one of paragraphs. 1-3, in which at least one of the lug plates (3) comprises a rectangular, in particular square, main body (35). 5. Wheel chain (1) of a special vehicle according to one of paragraphs. 1-4, in which at least one of the grouser plates (3) comprises a plate-like main body (35) having at least one recess (41) that extends inside the main body (35) transversely to the plane (25) plate direction. 6. Wheel chain (1) of a special vehicle according to one of paragraphs. 1-5, in which the height (55) of the grouser corresponds to at least twice the thickness (39) of the lamellar main body (35) of the plate (3) with the grouser. 7. Wheel chain (1) of a special vehicle according to one of paragraphs. 1-6, in which at least one of the lug plates (3) comprises a plate-like main body (35) whose thickness (39) is at least 15 mm. 8. Wheel chain (1) of a special vehicle according to one of paragraphs. 1-7, wherein the wheel chain (1) of the special vehicle comprises at least one, in particular at least two rows (11) of lug plates (3) extending along the circumferential direction (U) of the wheel chain (1) of the special vehicle. funds. 9. Wheel chain (1) of a special vehicle according to claim 8, wherein the wheel chain (1) of a special vehicle comprises at least two rows (11) of plates (3) with grouser, and at least two plates (3) with grouser are located next to each other across the circumferential direction (U). 10. Wheel chain (1) of a special vehicle according to one of paragraphs. 8 or 9, wherein the wheel chain (1) of the special vehicle comprises at least two rows (11) of lug plates (3), and at least two lug plates (3) are offset relative to each other in the circumferential direction (U). 11. Wheel chain (1) of a special vehicle according to one of paragraphs. 1-10, wherein the wheel chain (1) of the special vehicle is symmetrical with respect to a symmetry plane (15) extending across the tire axle (71). 12. Wheel chain (1) of a special vehicle according to one of paragraphs. 1-11, in which at least one lug plate (3) is smaller than the supporting surface (63) of the special vehicle tire (65). 13. Tire (65) of a special vehicle, in particular for forestry vehicles, tractors and wheel loaders, with a wheel chain (1) of a special vehicle according to one of paragraphs. 1-12. 14. Plate (3) with a lug for a wheel chain (1) of a special vehicle according to one of paragraphs. 1-12.

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