HU230640B1

HU230640B1 - Idler roller

Info

Publication number: HU230640B1
Application number: HU1300038A
Authority: HU
Inventors: Gyula László Roman
Original assignee: Sólyomi Zoltán
Priority date: 2013-01-25
Filing date: 2013-01-25
Publication date: 2017-06-28
Also published as: HUP1300038A2; WO2014114963A2; WO2014114963A3

Abstract

The invention is a roller, particularly for belt conveyors, comprising at least two radial bearings (12) of identical rotational axis, being mountable onto an axis (10), a roller body of cylinder shape attached to an outer racer (15) of the radial bearings (12), and at least one seal element (14, 16, 20, 27) preventing contamination of an inner space of the roller, wherein the roller body comprises a cylindrical roller mantle (25) made of plastic and a tube element (22) supporting the roller mantle (25) from inside. The tube element (22) is arranged along the rotational axis of the roller body, stiffening the roller body, and extending over the radial bearings (12) in both directions. Furthermore, the invention is an apparatus for manufacturing said roller, the apparatus comprises a press unit comprising a press element movable by means of a press apparatus and suitable for pressing a tube element having larger outer diameter than the inner diameter of the roller mantle into a roller mantle. (Fig. 1)

Description

(57) Extract

The present invention relates to a roller, in particular to a conveyor belt, which has at least two radial bearings (12), which can be mounted on an axle (10), having the same rotational axis, a cylindrical roller body connected to the outer ring (15) of the radial bearings (12) and the inner space of the roller (29). ) comprising at least one sealing member (14, 16, 16 ', 20, 27) impeding the contamination of the roller body with a cylindrical roller housing (25, 50) and a tubular support element (22) of the roller housing (25, 50), wherein the tubular member (22) on the stiffener of the roller body, along the axis of rotation of the roller body, extends in both directions on the radial bearings (12), bearing rings (24) are inserted between the roller body and the radial bearings (12), and the radial bearings (12) are mounted they are connected to the roller body by means of bearing housings (24).

The roller according to the invention is characterized in that the bearing housings (24) are provided with one or more cavities (30) for damping and heat-absorbing the radial bearings (12) and the cavities (30) are the outer rings (15) of the radial bearings (12) and the roller (25, 50) is located between the tubular member (22) in the bearing housings (24), and the radial bearings (12) are embedded in bearing seats (26) with one or more slots (28) made of elastic material and the radial bearings (12) are connected to the bearing housings (24) through the bearing seats (26).

F 13 00038 (2016,)

Representative: Tibor Rónaszéki, KFT Ltd, Budapest, HU

caster

FIELD OF THE INVENTION The present invention relates to a roller, in particular to a conveyor belt, which has at least a coaxial, axially mounted axial bearing, a cylindrical roller body attached to the outer ring of the radial bearings, and at least one sealing member to prevent contamination of the inner space of the roller, by a cylindrical roller housing of the roller body. and the roller cover is supported from inside! wherein the tubular member on the stiffener of the roller body, along the axis of rotation of the roller body, extends extending in both directions on the radial bearings, bearing housings are mounted between the roller body and the radial bearings, and the radial bearings are sewn to the roller body by means of the ball bearings.

The rollers are known and widely used in industry, especially in mines and conveyor belts. The castors currently in use generally have a steel roller ring. The thrust rollers have an unfavorable mass. This will adversely affect the weight of the belt-wrapped device, which will narrow the application area of the steel roller.

This problem is solved by the use of rollers made of plastic roller, which is illustrated by an example in the US $ 4,440,29. The prior art of this roller and the apparatus for carrying out the process are illustrated in the document EN 225 Even Bl. A disadvantage of the roller disclosed in US 4,440,295 is that a filler element is required to reinforce the plastic roller body in the interior of the plastic roller body, which causes the roller body to grow, the disadvantage of the roller producing apparatus described in document EN 225 861 B1 is that only the individual elements nA, degrees lo 'ivsa ?,' exevj akdmx kr.o kdloac »'e ovicaAU?' ^ "U ko ko ko org, ei org org org org org,,,, org ei ei org ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei ei„ „„ „ő ő ő ő ő ő ő ő ő ő ő ő ő ő ő ő„ „„ „ő ő ő ő ő„ ^.

10,980

A roller with a plastic hollow-core body made of plastic is disclosed in US 4,955,462 dokuincnhunbam The longitudinal inner space of the roller according to the document is defined by a rim element provided by a cylindrical wall, which is provided by the heat dissipation of the interior. Accordingly, it is made of a material having good thermal conductivity, for example metal, Document A ·. The disadvantage of the roller according to the invention is that the roller body made of plastic must have a significant thickness relative to the diameter of the roller to ensure the rigidity of the roller.

The most common mistake with known rollers is that damage to the bearing occurs. Damage to the bearings can cause the rollers to get stuck, which can cause significant damage to the photo tape on the rollers. Such damage repair can be very costly. Damage to the conveyor bearings is usually caused by the impact of the bearings and the contamination and moisture in the bearing joints.

The rollers disclosed in US 4,440,295 and U.S. Pat. they have a labyrinth lining that utilizes dirt and moisture to make a significant way to get inside the roller body. The disadvantage of bib-stripping is that it has a single seal, and that only the length of the dirt that the dirt has to do is inhibiting the ingress of dirt.

5 * "i Π 0, /, n, í / yf nose formation

g.nl 'hehe t eddemmet

Also known is the support roller of CN 2021 Salt IS IS Application Model Description. characterized by the presence of a composite ceramic housing. go yx eve o, <getg, s, f o>"." u..a ', e og <tek, you can protect the bearing housings against dirt with a labyrinth seal.

However, a major disadvantage of this solution is that the composite ceramic material selection does not allow the roller to tolerate greater, continuous dynamic load damage, thus limiting its narrow area of wear.

2 'Α'χ' A./ó* K,>,,, _{r lA} In a house made of g, V Cg C>V'g, you put a roller with a metal roller on my metal roller. a "waxes he-3, whose edges are fixed hermetically to the rim of the roller body, and so on, Ά P '0.00''0' Λν \ t ^{The purpose of T} ^ l, k V, 0O, gOC <ki 'ρΆ'T.

The disadvantage of the given solution is that the other Kme * i nx-pvleers are '. similarly, in case of larger sizes, the roller is of the order of magnitude, which is characterized by its widespread use,

Another disadvantage of this solution is that the bearing inserted between the shaft and the roller body is not really protected by the bearing housing from the dynamic stresses, so that in the event of continuous dynamic influences, the bearings can easily be damaged; which may adversely affect the operation of the roller and may even lead to complete failure of the roller.

The disadvantage of the rechargeable ring is that it can be damaged in many ways by tears when used in the vomit industry or in the transport of other bulk materials, and hence no air cushioning effect occurs. As a result, the uploadable kneading knife can be increased. i have a real protection against the greater dynamic forces.

The need for a roller that has the greatest possible protection to prevent damage to the bearings has arisen as a result of the old solutions.

The primary object of the present invention is to provide a roller which is as free from the drawbacks of the prior art as possible.

Another object of the invention is to provide a roller in which the bearings have the greatest possible protection against external influences.

The object of the invention is also to provide a roller which has both roller and axial impact protection.

In order to create the roller according to the invention, it has been found that if the bearings inserted between this roller body and the shaft are placed from a bearing housing of a geometric shape and material of an unusual geometry and material, and in a novel bearing seat, I connect it to the roller seat of the roller body in a special way. then the bearings are placed in a flexible bearing, where the dynamic ~ 4 forces arriving on the roller body cannot pass directly through the bearing housing vibration damping and the bearings can be unfolded »because the smaller strokes reaching the body of the roller are absorbed by the bearing seat. , and thus their probability of failure will be significantly new, which is very likely to occur. the. task can be solved

Megfelelően according to the intended purpose, the roller according to the invention, in particular for the conveyor belt, which has at least two identical rotary axes! »A radial bearing mounted on an axle, a cylindrical roller body connected to the outer ring of the radial bearings, and at least one blocking element preventing the contamination of the inner space of the roller. with a cylindrical vapor barrier made of plastic, and a tube element supporting the vapor barrier, wherein the rain element on the stiffening of the roller body, along the axis of rotation of the roller body, extends in both directions on the radial bearings, bearing rings are mounted between the roller body and the radial bearings, and the radial bearings are mounted coupled to the roller body by means of bearing housings, such that the bearing housings cause vibration collapse and heat dissipation of the radial bearings equipped with one or more old men and women. .öregek radial bearings outer rings digs the görgőpalást are arranged in the bearing houses between tubular element to \ _w bba the rodutbs mechanical engineering are embedded ntnomas, cnágból keszoh a cut more TERS icnoelkezö esapágyfészkekbe and & radial bearings of the bearing housings through the bearing nest csaiiaközüak .

A further feature of the Ulaimanx stent roller may be that at least one of the radial bearings having a rotational axis equal to one of the radial bearings at one side of the radial bearings includes a bearing, wherein the axial bearing inner disc is for the radial bearing in a manner supporting the outer ring of the radial bearing, while the axial bearing is supported. the inner part of the bearing for the radial bearing is connected in a supporting manner to the outer rings of the radial bearing, and the outer seat plate of the axial bearing and the radial bearing for the inner rings are fixed to the shaft.

In another embodiment of the roller, the roller comprises two radial bearings and the rock is radially annealed. , va, hv buy taduks bearing, they are hooked on knho side.

~ Ο ~

In the further development of the invention, the inner seat disc of the axial bearing is clamped to the outer ring of the radial or aperture by means of an adapter.

In a different embodiment of the roller, the roller blade is formed on its internal surface with a longitudinal bias and / or the elastic surface elements v.emA on the outer surface of the roller. In addition, the material of the rain slide is made of metal and / or roller made of refractory and / or coarse material.

are you writing? > ev ktrtteu has received the word ν $ ν '. Fig. 1 is a cross-sectional view of a part of a roller according to an embodiment of the invention according to one embodiment of the present invention.

Figure 3 is a sectional view of a roller portion of a set of a further embodiment of the invention; a

Fig. 4A is a cross-sectional view of an axial bearing used in the embodiment of Fig. 3 of the invention with an adapter;

Fig. 4B is a cross-sectional view of an axial bearing used in the form of the small food shown in Fig. 2; the

5 is a side view of a roller according to an embodiment of the invention. drawing, a

Fig. 6 is a sectional view of a roller housing according to another embodiment of the invention;

- ah? m, mám strong ^-m,! you can see a sectional drawing showing the variations of './mén the votpc ^c ' ^{, s} <te ca te te te LED elements.

Figure 1 shows. illustrates a detail of an embodiment of the roller according to the invention in a sectional view. In the present embodiment, the roller according to the present invention comprises at least two rotary bearings íthető, which can be fixed to each other, with the same rotation axes. The shaft 10 does not necessarily form part of the roller according to the invention. The elements shown in the figure are rotationally symmetrical in each case with the dashed-dotted 10 axis. it does not indicate the opposite. The radial bearing 12 is comprised of a kneading knife 15 and an external IS ring that can be fastened to the lubricant shaft, and bears are known by themselves as bearings 13 and 15 respectively. Radial bearings 12. a suitable position for each of the 12 radial bearings is provided by a 1 g Seeger-gynr.

The roller further comprises a cylindrical roller body attached to the outer ring 15 of the radial bearings 12, a cylindrical roller seat 25 of plastic glaze plastic, and a tubular element 22 supporting the roller board 25. The tubular member 22 is rigidly formed on the roller body, on the roller axis rotation axis, on the radial bearings 12 in both directions, and can be seen in Figure k.

In the present embodiment, the material of the tubular member 22 may be formed of a metal, but in other embodiments, a material other than metal, which enhances the rigidity of the roller body in the roller. The lifetime of the roller bearing capability heavily improves compared to that of Unne, which has no origin, without the 22 origins, and is not particularly advantageous for the roller according to the invention with a large diameter. characteristic variations.

In the embodiment shown in Fig. 1, the roller further comprises 14, shoot, 20 and 2 impeding contamination of the inner space of the roller 29? sealing elements A 14, 16 and 2? the sealing elements form the seal of the roller as a matching unit. THE 2? the sealing member actually forms the roller cover plate with a bearing housing 24. That the sealing member 27 is <<. v ao o n s, c o 's, n o, c o' · - ,, ,, ί * j k. ?.eyo, in some embodiments, may be different depending on the area of application of the roller. By varying this ratio, the roller can be further protected from the side ~ from the sealing member 27 or the bearing 24. It is conceivable that a mass is created in such a way. or a bearing housing which seals the ends of the roller alone, thereby protecting the radial bearings 12 from dirt. The ring-like compression elements 14 are the seals of the horse associated with and associated with the shaft 10, and the drawer 27, "> U ^ are engaged in each other, ^ A, received mode. U 'Λ, Λ' head stones, the wall of which is tapered along the drawing element 14 as shown. The material of the sealing element 14 is exemplified by the use of a different number of dowel members 14 in the present embodiment of the present invention, using a different number of dowel members 14 'instead of a sealing member. The sealing member 29 supporting the inner side of the inner edge is also arranged. Fig. 2 illustrates that the inner surface of the bearing housing 24 is provided with an Icpes blade, which allows the use of a conventional radial bearing 12.

As shown in Fig. I, the roller includes, in the present embodiment, a bearing housing 24 provided with a cavity 30 for securing the vibration damping and heat dissipation of the radial bearings 12 to the outer ring 15 of the radial bearings 1.2. Accordingly, the radial bearings 12 are connected to the rollers 24 of the beam. The cavity 30 extends from the inner space of the roller 29, parallel to the axis of rotation of the roller and positioned symmetrically. In the cavity 30, several separate cavities, as described above, may be understood. The cavity 30 ensures that the dynamic forces of the outer ring 15 of the radial bearings 12 are attenuated. In the present embodiment of the roller, the radial bearings 12 are furthermore embedded in the bearing bearing members 28, and the radial bearings 12 on the bearing seats 26 are embedded. , they connect to the 24 sleeping houses.

The smaller strokes reaching the roller are the bearing nest 26, the larger ones are the 24-bearing housing shaft and i-> v 'oe? a P teaser * c ^ -ptg ee , mt but kn m xn for use during use. According to the figure, the bearing housing 24 and the bearing seat 26 are inserted between the sealing member 20 in the present embodiment, the use of which contributes to more effective protection of the interior 29 from dirt. The bearing housing 2.4 and the threading member 20 are configured to prevent contact with the inner ring 3 of the radial bearing 12 and to rotate with the other elements of the roller blade. Among the elements shown in the figure, the inner ring 13 of the radial bearing 12 is attached to the roller 10, the sealing ring member 18 is attached to the shaft 10, the other elements of the roller rotate together with the ball bearing.

Figure 2 shows a further embodiment of the roller according to the invention. These kim * h eaA <c '' IoKKW contains I, A,. <>. <, Κ contains kv ·,>"-x'vν'-hv" of the radial bearing 12, which is connected radially to the 12 radial bearings a axial bearing 32 with a rotational axis and an axial bearing inner housing 36 for a radial bearing 12 in a manner supporting the outer ring 15 of the radial bearing 12. is attached, and 32 aziálls Bearings) 34 · ftokitaája external radial stem of .12 \ "C \ hehe 'í'uuk b u ^s o' guild, \ h \ o EWOO t i <

It is understood that if the roller according to the invention is coupled to the shaft 10, in addition to the above-mentioned elements, the nesting disc 34 of the axial bearing 32 rotates with the shaft 10 in response to this. the disc 36 of the axial bearing 32 is configured to avoid contact with the inner ring 13 of the radial bearing .12, i.e. the gap between the nesting disc 36 and the knife 13 and the mandrel 36 are only external.

Figure 8 shows 8g> nonhvto, hog 12 ndhd '. \ T t, vu, <, öe / tctx heh ew ».me *. r \ _R \ <k e'oer ^MUM! In a plurality of embodiments, a 16 'die is used in contrast to the sealing member 16 shown in Figure 1, and two sealing elements 14 are provided between the sealing members 16' and 27, in contrast to the four sealing members 14 shown in Figure L. The 27 sealing elements and the + 'g' wc lc tb en vle Kux k? The mx + ueeL and the bearing housing 24 are provided with a recess that accommodates the protrusion 23.

The embodiment of the roller according to the invention shown in Figure 3 is slightly spaced from the embodiment shown in Figure 2. This embodiment comprises an axial bearing 40 and an inner bearing disc 44 of the axial bearing 40 is connected to the outer ring 15 of the radial bearing 12 via an adapter 46. In contrast to the embodiment shown in Figure 2, the advantage of this Vivado shape is that there is no need for a 32 axial â € œtransparentâ € with a special 36-inch disc, but only a suitable T t ^ 'v' d ati must be selected. 'CAzt m.pklev -r abper e'.rende exevel kbei to' C.en ktvteh form,

The advantage of both embodiments is that m is shown in FIG ^. the roller element is green compared to the dl shape. that instead of lo tonetoeiem, we use la 'o5nutoekmm, and instead of four or four, there are two or two pieces of 14 headpieces arranged at the end of the roller. In our experience, the arrangement of the double sealing members 14 according to the embodiments of Figures 2 and 3 also provides sufficient protection against the contaminated check.

1, -3, one end of the roller is shown. Generally, both ends of the roller ec.exk JTV t 'v \ megknv the sva and'\> oe 'rk ^ ot''s.^<1 1 comprises a radial bearing \ ge, 12 and the two radial bearings 32,40 axial Grips · Radial bearings 12 are connected in a conventional manner from the outside. However, it is conceivable that the roller may have two ends having different designs. By way of example, if the two ends of the roller receive different lateral loads, it may be advantageous to have a larger side loading end of the roller as shown in FIG. 2 or FIG.

The use of the axial bearing has the advantage that the roller with axial bearings becomes suitable for receiving axial loads, that is, coming from the ends of the rollers. By way of example, trough belt strips for trough-shaped tapes are joined on both sides, obliquely mounted rollers exposed to significant axial loads. Radial bearings of sloped rollers with radial bearings supported by axial bearings are optimally driven by the use of axial bearings on the pliers \ t

Fig. 4b 4b is a sectional view of the fdetvo fe ext.the 4tk bearings. The details of the axle bearings 52, 40 and the connection of the nest disc 44 to the adapter 46 can be observed in detail on the abrasion.

Fig. A shows a roller having a 10 axis, having a roller bar.

The pre-machining, ahtan eto, 6, esoelemtne. there is a non-equipped gopoplast 50 for use in certain embodiments of the roller according to the invention. The roll 50 is provided with a longitudinal rib 34 on its inner surface. The $ 4 ribbing facilitates the compression of the roller 50 into a tightly fitting tubular member, such as a steel material, which fits the inner surface of the roller, and provides rigidity and increased carrying capacity of the roller.

"oKoe ogtrmotel efe'O schema gorgespaktuMm m, <$ ht mohama üfe'cü elements are shown. Preferably, the elastic surface elements 52a-52g are provided with a roller shell outer surface. The 52a-52g surface elements can be reinforced with hydraulic presses for roller pallets, with different usage needs and top-downs with different hardness and cobblestones with different hardness and cavity, and we use surface molds made of molding material for the solution to be solved. .

Such flexible surface elements 52a-S2g. application is advantageous, for example, in applications, particularly in ports, loading stations, but also at other loading points, where the runway receives a high dynamic load when loading bulk goods. It is important to minimize the dynamic load10 with the use of as wide astringent receiving elements as possible to conserve all elements of the transport path. This can be achieved by the use of flexible 5'2a-52g surface elements on the rollers.

In some embodiments of the roller according to the invention, the roller is made of refractory and anti static material. the advantage of such small Heh shapes is that they can be used vdkvfe more rarely, for example, by complying with the mining industry regulations. These properties are realized by using the plastic elements forming the individual elements of the roller, for example ElOFE-free (Higlt Densiiy Polycylylene ··· High polyethylene) additive. The criterion for these additives is that their use should not be influenced by the weld quality and mounting capability of each component.

A further advantage of the roller according to the invention is that due to its rigidity, it can also be formed with dimensions that are only known for the horns, for example for use in power plants, biomass processors ™, as only they can provide sufficient rigidity.

Another advantage of the roller according to the invention is that it preferably produces a small ···· to 4-mm mm - with an allowance, This allowance for the roller is fixed to the roller an 11 s msJ a, t \ t \ 'v. s, \ 'mapping between ".we' la '-'? u \\ _c \ ed.

I bbol s, mmuzo element to make this / eg outstanding egve, o 1, can be provided. Furthermore, by machining the roller in the last phase, it is possible to ensure that the punching punch is low, for example below 0.1 mm. Such a degree of precision is required for special roller applications, such as for example, the birth of a balance sheet.

One of the advantages is that the rollers are a lem! In this way, the design of the rollers leads to a significant reduction in the number of rollers known per se. This is a haphazard thing with the tightening of environmental standards and the very advantageous applications in open-air lanes.

Claims

Advantageously, the roller of the present invention can have a life span of up to 2 to 3 in relation to the known rollers, thanks to the use of an effective sealing system as described above and bearing housing provided with a vibration damp.tW cavity and a gap-forming bearing.

It is more advantageous that the lifetime of the belt of the conveyor belt provided with the rollers of the present invention increases significantly, since the roller runners of the roller are considerably more favorable than the known rollers. This benefit is very significant, as the cost of running the track and changing belt is one of the most significant cost elements. Elements of lanes. furthermore, it is a great advantage that the rollers and the weight of the invention are substantially smaller than the previous steel versions, so that the use of these rollers is also seriously affected by the weight of the entire frame structure. During operation and maintenance, there is also a great advantage that the individual parts can be moved and replaced much more easily, due to the modular design of the roller.

In areas where rollers are used, from bulkheads to bulkheads, but are uncontrolled, arrive in bulk - for example, in the case of loader loading, large nuggets at the edge of the track often get stuck between the stationary frame members and the rotating rollers. This problem is reduced or eliminated by the design of the roller ends.

It is important to emphasize this advantage that the roller cover and bearing housings are of the same material. Preferably, pchktkeppzn iMmT is made of itf-elm 'υ'υ t'pns from writing. slots that allow the elements to be welded together seamlessly. This is the positive effect of the roller mmneocre yvekoo »nymon.

The material used for the roller can be steel, but for example in a coastal environment, evk em m. s Use rescue ar »y tpot.

The invention is, of course, not limited to the preferred embodiments described in detail, but further variations, modifications, and enhancements are possible within the scope of the claims.

-12FREE DETAILS &

1. A roller, in particular for a strand of strand, comprising at least two axially spaced axes (.10; radial bearings (12) that can be fastened. The radial bearings (12) are cylindrical and / or cylindrical). contains at least one pathway obstructing the contamination of the inner core (29) (14, I6, 27), the cylindrical roller cover (25, $ 0) of the roller body plastic, and the roller support (25, 50? having a tubular member (22), the tubular member (22) extending rigidly on the steam body along the axis of rotation of the roller body, on both radial bearings (12) in both directions, bearing housings between the roller and the radial bearings (12). , and the radial bearings (12) are mediated by the bearing housings (24), connected to the roller body, characterized in that the bearing housings (24) are oscillating the radial bearings (12). with one or more cavities (30) to provide scaling and heat dissipation, there is a hollow junction> ak * * *>>. ^ ak ak 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 15 12 15 15. 22) are arranged in the bearing housings (24), and the radial bearings (12) are provided with flexible material, one or more slots (8) having bearing (s) (126), and the radial bearings (12) on the bearing housings (26). transversal! are attached to bearing housings (24).

A roller according to claim 1, characterized in that the axial bearing (32, 40) having radial bearing (12) having the same axis of rotation as the radial bearing (12) is connected to at least one of the radial bearings (12), the axial bearing (32, 40) being ) an inner cotter pin (36, 44) for the radial bearing (12) in an exemplary manner by the outer ring (15) of the radial bearing (12), while the inner cuff (36, 44) of the axial bearing (32, 40) for the radial bearing (12) the outer ring (15) of the radial bearing (12) is supported externally (by means of a... uA.dis bearing <32, 40), and the radial bearing (12) is bore. nt '.' í? (13) is a triode mounted on the shaft (10).

A roller according to claim 2, characterized in that the roller comprises two radial bearings 112) and the radial bearings (12) of the two radial bearings (12, 40) are connected in an intermediate manner from the outside. rapv '.göf'Apo-.tt s.'Cf.nn .v? J jdlcmervc. scar} the inner nest disc (44) of the uvcc e.vcugs <40 'is connected to the outer ring (15) of the radial bearing (12) via an adapter (46).

A serion roller according to any one of claims 1 to 4, characterized in that the roller (25, 50) has a longitudinal rib (54) on its inner surface and a roller according to any one of claims 1 to 5, characterized in that ^{roller caster} x '' ^ς , <'ktxi''x x cu'suju -h, oh e, is <<k'vaonal;

A roller according to any one of claims 1 to 7, characterized in that the material of the rain element (22) is metal.

8, 1-7. A roller according to any one of claims 1 to 4, characterized in that it is refractory x ', s, try <xgi, tkA, x, 5

Your Mandate 'δ

2/6

* 4

S / 6