EP0950625A2 - Haulage car for paper rolls and paper roll transporting system for such a car - Google Patents

Abstract

The invention relates to a paper roll transport carriage (1) which comprises a support element (2) for a paper roll (50) and a plurality of running elements (4) arranged on the support element for rolling off in a running rail. The running elements (4), advantageously running balls, can each be rolled in several directions. In addition, the invention relates to a paper roll transport system with flat, advantageously trough-shaped or V-shaped running rails which are connected to one another by means of special, fixed crossing plates. The paper roll transport trolley (1) of the type mentioned can be moved in this rail system and can also be moved sideways or even rotated. Compared to the state of the art, the tracks to be used here require far less depth in the floor and can therefore also be retrofitted. They are also easier to clean. The transport trolleys (1) according to the invention have a low overall height and can also be rotated by the special running elements (4), which previously required complex turntables to be embedded in the ground. <IMAGE>

Description

Technical field

The invention relates to a paper roll transport trolley a support element for a paper roll and several special running elements that roll in one Track are determined.

The invention also relates to a paper roll transport system, which includes a track network in which Junction points through fixed crossing elements are formed. Paper roll dolly at the beginning mentioned type are new on this track network Running rails can be moved.

In printers, especially newspaper printers, have to to about 1.8 t rolls of paper quickly from one place to be transported to another. So are rolls of paper for example, from a paper roll warehouse to unpacking and Transport glue preparation stations. From there the paper rolls prepared in this way must go to the Rotary printing presses are transported. Waste paper rolls that come from a roll dispenser Rotary presses are to be removed often disposed of in other ways than the new ones Rolls of paper to block supply routes avoid. A change of paper roll is also required Printing machines even when the paper roll is not yet used necessary if due to a different newspaper format or an insert to be printed with a different format Paper roll web width changes.

To transport the heavy paper rolls in and out To be able to carry out residual rolls is a print shop with a whole rail network, in the paper roll transport trolley, also called "transport dog", motorized supported or pushed manually.

State of the art

So far, the paper roll transport has been carried out with a trolley, where a support for a roll of paper on a Drive is attached, which consists of several wheels. With the known system, the entire drive is in one rail space located below the floor surface housed. The wheels are in one in the bottom completely sunk rail. This system is basically no different from one Rail system, as is the case with the railroad or others rail-based transport systems is used. For The wheels have a flat side guide Wheel rim section on a side surface of the Rail head is guided along the rail.

The rails are completely embedded in the floor only through the narrowest possible slot from the outside accessible. A support element protrudes through the slot, which is connected to the paper roll support of the trolley is. The entire drive of such a known one Transport trolley, which out of the normal sideways Impellers is housed in the floor.

Because the rail has to accommodate the entire drive, are the necessary construction measures to install a such transport system very complex and expensive. Moreover the ground foundations must match the planned transport system be adjusted. This is a subsequent installation of a such a rail system, if at all, only under large Circumstances possible. They are also appropriate deep-seated turntables at the intersection of two Railways necessary for a transport wagon to enter one laterally branching rail track can be moved. The turntables are rotatably embedded in the floor, therefore very complex and expensive. In addition, the necessary Force to turn such a turntable with transport trolley on it and the heavy one Paper roll very high. Finally it should be noted that through the slot in the ones below the floor Dirt penetrating the rail space is very difficult to close again is remove.

A transport system as previously explained is from known by the company "von Roll Maschinen- und Fördertechnik AG". So such a system under the brand name "Mecaroll system" distributed.

EP 0 700 854 A2 also shows a corresponding one Transport system with a drive in the floor Transport trolley for a roll of paper. With this Paper roll transport trolley can also be the edition of release the drive.

EP 0 390 735 B1 discloses an automatic system for Inserting paper rolls in the roll stands of one Web rotary printing machine. Herein is general of one Rail trolley system talk. The design of the Rails and the structure of the dolly is however not described in detail. Most likely will find one Transport system of the type described in the introduction.

Presentation of the invention

The underlying technical basis of the invention Problem is a paper roll transport system and a paper roll transport trolley designed for this purpose create, where the disadvantages explained above are largely eliminated.

This technical problem is caused by a paper roll trolley with the features of claim 1 or by a paper roll transport system with the features of Claim 16 solved. An inventive paper roll transport trolley comprises a support element for a paper roll and several running elements arranged thereon, which are used for rolling are determined in a track and each in can be unrolled in several directions.

An inventive paper roll transport system that especially for the transport of paper rolls in one Print shop is intended to include several, a rail network forming tracks. The tracks have a flat, advantageously trough-shaped or V-shaped or in general concave guide profile for guiding running elements of a Paper roll transport trolley of the type according to the invention Junction or branch points are over the running rails fixed intersection elements formed therein, the Corresponding guide profiles of the running rails Guide grooves that intersect each other connected.

The invention is based on the idea that so far used rollers rotatable about a wheel axis to replace completely new barrel elements, the first in several Directions are unrollable, and accordingly a new flat To provide a guide profile for guiding the running elements. This makes it possible for the previously required Turntables replaced by fixed crossing elements can be, which significantly reduces the installation effort and reduced the cost of the transportation system. Furthermore it is now possible for the first time to reduce the installation depth of the Running tracks and the crossing elements significantly to reduce. Because the crossing elements none include moving parts, is also operational safety elevated.

In contrast to the previous transport vehicles, where the Drive with the individual wheels as central as possible was arranged to have only one access slot to the rails Having to provide it is now advantageous if groups of running elements on two opposite outer Edge areas of the support element are arranged. Thereby the paper roll trolley is more secure against tipping. With the previous rails had to Adequate tipping safety of the wagons special measures are taken in the rail space. Thereby the rolling resistance also increased when moving the Transport trolley, which means increased effort when pushing by an operator of why heavy paper rolls required.

Depending on the load-bearing capacity, they can be unrolled in several directions Running elements comprise a group of two or more running elements, which are each evenly spaced in a row are. The number of running elements is preferably one Group can be limited to two, because then the crossing elements can be made easier; by doing a advantageously existing rotary guide groove that later still to be explained is to be provided.

According to a preferred embodiment, the underside of the support element angled upward in cross section Side parts on, or is substantially V-shaped, and on the outer edge areas of these side parts are the Running elements arranged. This results in an extreme low height of the trolley. This low height is necessary so that a paper roll with the smallest possible Force rolled on such a paper roller carriage can be.

To roll up the paper roll on the support element of the To facilitate the trolley is advantageous at least on one long side of the support element extending towards the ground around a horizontal axis rotatable ramp provided.

The ramp preferably has a bearing point at which it can be releasably placed on the trolley and on which allows the ramp to rotate about a horizontal axis of rotation. Furthermore a section of the ramp protrudes beyond this bearing point. This section is in a recess in the support element insertable. Such a ramp is, for example, out Steel sheet can be produced very inexpensively and moreover extremely robust. Furthermore, this configuration of Ramp this with one on the support element Paper roll held on. Because the paper roll is there then on the section of the ramp that goes over the bearing protruded.

To the side at an intersection of two railroad tracks To facilitate procedures of the trolley or its Centering on the side rails as well To facilitate rotation is a centering element in the Middle area of the support element with which the Dolly is immovably fixable, at the same time but is rotatable about its vertical axis.

Pushing the trolley on and off with one such centering is facilitated in that this is spring loaded. The suspension is the Sliding on a counter element of the centering element on Dolly achieved a centering, but by Overcoming the spring force in one direction very easily is solvable, but blocked in the other direction.

For this purpose, for example, a rotating calotte is very advantageous, which is pivotable about a horizontal axis of rotation. Very is simple and extremely effective as a centering element Bottom-facing spherical shell with a bottom-side Centering ball section interacts. Of course it does possible to interchange the two elements, i.e. the centering element on the trolley is a Centering ball section and acts with a bottom Centering shell together.

As extremely stable and at the same time very low Rolling element with rolling friction is a freely rotatable one Running ball advantageous. This is a procedure of Transport trolley possible in different directions, such as also turning it into appropriately preformed Guide profiles of the running rails. Enable at the same time such balls have an extremely low design. Also at the high absorption forces are relatively small balls sufficient, for example, a radius of 15 to 25 mm own, advantageously 18 to 20 mm. Four of them Create rollers at a distance of approximately 350 to 450 mm a tilt-proof, very low-build transport trolley. An extremely robust embodiment of such balls is given by the fact that each one in a bowl a variety of small balls are stored. A Such a ball structure is also referred to as a ball roller. The construction of these ball casters also enables heavy loads an effortless moving or turning in any directions.

Such ball rollers are per se for installation in ball roller tables known. These allow you to move or rotate of goods to be conveyed on the ball roller tables in every direction. For example, ball rollers from Dr. Tretter, Machine elements, Göppingen / Germany also for the existing, completely new application excellent suitable.

In order to rotate the truck without rotating the entire trolley It is to allow paper roll on it advantageous that the support element is a top and a Lower part includes that against each other about a vertical axis are rotatable. Turn the paper roll by 180 ° a dolly may be necessary if the paper roll winding direction when loading the Paper roll on the dolly was ignored.

A paper roll transport system of the type according to the invention, in the paper roll trolley according to the invention on flat Guide profiles of the running tracks forming a rail network be guided, point at intersections and branches fixed crossing elements with the formed therein Corresponding guide profiles in the running rails Guide grooves that intersect each other. That means that the Guide profiles of the rails in crossing areas corresponding guide grooves in special crossing elements are extended.

On the one hand, it is conceivable to have two parallel to each other running, flat guide profiles in a running rail to provide. On the other hand, two of them can be used spaced rails are provided, each one have a flat guide profile. In the former case, the Track or the distance of the guide profiles in one such a rail the width of a paper roll transport carriage correspond. As a result, they are Run rails relatively wide, what when mounting may be more complex, however, the number of installed rails reduced. In the second case only the width of the track corresponding to the floor to get prepared.

A steel track is extremely easy to manufacture. Such a track is also very robust and can be Forklifts or the like can easily be run over. Due to the essentially flat guide profile in one such running track is the running over with vehicles of all kinds no problem.

Optimal guidance of a paper roll transport trolley Ball is given by the fact that the guide profile in the Running rail has a substantially V-shape, the Profile flanks a rolling element rolling in it include adjusted angle. Is advantageously this angle 90 ° - 170 °, especially with a ball of a radius of 19 mm is an angle of approximately 140 ° optimal. With such a guide profile Minimized rolling friction between rail and ball, but at the same time a necessary guidance of the ball given.

So that a paper roll transport cart on one Crossing element transferred into a side rail it is optimal if the focus is on yourself crossing guide profiles in a crossing element Transport trolley centering element is present. With a such trolley centering transport vehicles driven over it are held immovably, however, at the same time a rotation around the vertical axis is permitted. This then turns the trolley "on the Place "on the crossing element by, for example, 90 ° or more is possible.

A simple design of a trolley centering element is given by the fact that this one over the top of the crossing element protruding Ball section includes. This protruding ball section is easily closed by forklifts, for example run over. The counterpart is then on the dolly Corresponding spherical shell or calotte part is provided.

However, it is also conceivable that the trolley centering element can be raised and lowered in the crossing element is appropriate. This is a trolley centering element completely retractable so that when not extended Intersection element this does not become a "trip hazard" or damage to other vehicles in the area drive of the transport system.

So that a paper roll transport trolley on the Can rotate intersection element, it is advantageous that additionally a rotary guide groove in the crossing element is available. This rotary guide groove has one Profile cross section that the straight guide grooves in the Junction element corresponds and describes in the top view a circle defined by the intersection of the Straight guide grooves located in the intersection element goes.

An embodiment in which the crossing element is a Steel plate is extremely robust and also simple to manufacture.

Optimally, the straight guide grooves and Milled rotary guide groove in the crossing plate.

Due to the milling, it can at the intersection of the rectilinear guide grooves and the rotary guide groove for Elimination of the guide flanks of the guide grooves come so that optimally a support element is used, the one Management of the running elements in the areas in which the Guide flanks of the guide grooves are no longer present, enables. For this it is advantageous that the support element has intersecting guide grooves, which according to the straight guide grooves in the crossing plate are aligned, but less deep and less Have width.

To compensate for a possible change in height of the Guide grooves in the crossing plates due to wear the additional element with at least one washer underlaid. By removing or adding the Washers is the additional element in height changeable so that it is the outer Ambient conditions is adaptable. Optimally, that is Additional element a disc made of a harder material exists as the crossing plate.

To avoid the wear and tear on the rails It is special to simplify repair work advantageous on the substantially flat or V-shaped Guide profiles of the running rails to the running profile adapted wear band, which advantageously consists of one Steel sheet is there to apply. With a very advantageous embodiment provides that Wear tape using a double-sided tape on the Track is glued on.

Finally, it should be emphasized that the rails of the paper roll transport system according to the invention also can be laid in a curve. In this case, this indicates outer profile on the same cross-section as a guide profile of a straight section of a Track. The inside profile of the curve, however, is based on the given geometry.

Brief description of the drawings

Fig. 1

eine perspektivische Draufsicht auf eine erste Ausführungsform eines erfindungsgemäßen Papierrollen-Transportwagens,

Fig. 2

eine perspektivische Unteransicht auf den Transportwagen gemäß der ersten Ausführungsform, wie sie in der Fig. 1 gezeigt ist,

Fig. 3

eine Draufsicht auf den Transportwagen gemäß den Fig. 1 und 2 mit angesetztem Rampenteil zum Aufrollen einer Papierrolle auf den Transportwagen,

Fig. 4

eine schematische Querschnittsansicht durch den Transportwagen gemäß der ersten Ausführungsform und durch eine Kreuzungsplatte,

Fig. 5

eine Draufsicht auf eine zweite Ausführungsform eines erfindungsgemäßen Papierrollen-Transportwagens mit drehbarem Oberteil des Auflageelementes für die Papierrolle,

Fig. 6

eine schematische Querschnittsansicht durch einen Papierrollen-Transportwagen gemäß der Fig. 5 mit daraufliegender Papierrolle,

Fig. 7

eine Detailansicht eines als Drehkalotte ausgebildeten Zentrierelementes auf einer Kreuzungsplatte,

Fig. 8

einen Ausschnitt aus einer schematischen Darstellung eines Schienenplans mit Kreuzungsplatten,

Fig. 9

eine schematische Querschnittsansicht durch eine Laufschiene mit darauf abrollender Laufkugel,

Fig. 10

eine schematische Draufsicht auf ein Detail "X" eines Kreuzungsbereiches mehrerer Führungsnuten in einer Kreuzungsplatte gemäß der Fig. 9 und

Fig. 11

eine Querschnittsansicht entlang der Linie A-A nach Fig. 10.

In the following, several exemplary embodiments are described and explained in more detail with reference to the accompanying drawings for further explanation and for a better understanding of the invention. It shows:

Fig. 1

2 shows a perspective top view of a first embodiment of a paper roll transport carriage according to the invention,

Fig. 2

2 shows a perspective bottom view of the transport trolley according to the first embodiment, as shown in FIG. 1,

Fig. 3

1 and 2 with attached ramp part for rolling up a roll of paper onto the transport carriage,

Fig. 4

2 shows a schematic cross-sectional view through the transport carriage according to the first embodiment and through a crossing plate,

Fig. 5

2 shows a plan view of a second embodiment of a paper roll transport carriage according to the invention with a rotatable upper part of the support element for the paper roll,

Fig. 6

5 shows a schematic cross-sectional view through a paper roll transport carriage according to FIG. 5 with the paper roll lying thereon,

Fig. 7

2 shows a detailed view of a centering element designed as a rotating cap on a crossing plate,

Fig. 8

a section of a schematic representation of a rail plan with crossing plates,

Fig. 9

2 shows a schematic cross-sectional view through a running rail with a rolling ball rolling thereon,

Fig. 10

is a schematic plan view of a detail "X" of an intersection area of several guide grooves in an intersection plate according to FIGS. 9 and

Fig. 11

10 shows a cross-sectional view along the line AA according to FIG. 10.

Description of exemplary embodiments of the invention 1st embodiment

A first embodiment of an inventive Paper roll transport carriage 1 is subsequently based on the Figures 1 to 4 explained.

The paper roll transport carriage 1 comprises a V-shaped one Support element 2, which has two contact surfaces 22, the are inclined and enclose an obtuse angle. The Bottom sides 21 of the support element 2 are also V-shaped trained (see in particular Fig. 2).

At the outer edge areas of the support element 2, i.e. on the areas that are farthest from the ground are spaced, there are two running elements 3 appropriate. The running elements 3 are so-called Heavy duty rollers or ball rollers, which include running balls 4. The running balls 4 are in the running element 3 in one Shell freely rotatable in all directions on a variety kept stored by small balls. A spherical section of the Balls 4 protrudes from the running elements 3, so that total of the trolley 1 on the rollers 4 in still can be moved to explanatory guide profiles.

To stiffen the support element 2 are stiffening tubes 8 welded on the side of the edge areas. To the Side surfaces of the support element are also recesses 6 available in the middle between two running elements 3. On the underside are the recesses 6 by stop plates 7 completed.

In the middle between the four running elements 3 is one Centering device 5 available in this Embodiment consists of a rotary cap 37, as it is explained in detail below with reference to FIG. 7 becomes.

As can be seen from FIG. 3, one can Recess 6 of the support element 2 is a ramp part 11 be attached, with the help of a paper roll on the side rolled up and down on the paper roll transport trolley 1 can be. The basic structure of the ramp part 11 is recognizable in particular from FIG. 4. The ramp part 11 is basically plate-shaped, but has a front Section a ramp stem 11a, two of which laterally Bearing parts 12 protrude at an angle of approximately 90 °. The Bearing parts 12 serve as a pivot bearing when the Ramp part 11 on the stiffening rod 8. In this Embodiment are further bearing parts 12 laterally externally available, which are on support rods 8a support that on the underside of the support element 2 are welded under the associated recesses. To the edition on the floor is the ramp part 11 with an inclined surface 13 Mistake.

2nd embodiment

A second embodiment of an inventive Paper roll transport trolley 201 is shown in FIGS and 6 explained. This embodiment of the trolley 201 basically has the same structure as the first Embodiment. In contrast to the first embodiment however here the support element 202 is formed in two parts. The support elements here consist of bent steel sheets, to an upper part 206, which is a disk in plan view is welded on. Form the two support elements 202 again a V-shaped or trough-shaped recess secure storage of a paper roll 50, as shown in FIG. 6 is shown. The upper part 206 is on a lower part 207 arranged rotatably via axial roller bearings 208. On the lower part 207, which is a square plate here, are attached to the Corner areas of running elements 203, each with a running ball 204 attached. These running elements 203 correspond to the Running elements 3 of the first embodiment. That is, it are so-called heavy duty castors, their Balls are stored in a bowl, advantageously to reduce the friction with the interposition of a Variety of small balls.

The lower part has in the central region of the transport carriage 201 207 a through hole through which a Centering device 205 extends on the upper part 206 is appropriate.

This centering device is on the front side towards the floor provided with a spherical cutout 205a, so that a Ball section can be inserted laterally. A corresponding spherical section is on an intersection plate 30 created, based on FIG. 4 or FIG. 7 still is explained.

A centering device 5 is shown in more detail in FIG. 7 shown, both in a dolly 1 of the first Embodiment as in a trolley 201 according to the second embodiment can be used. This Centering device 5 comprises a rotating cap 37 which is about a Axis 36 is pivotable. The pivotal movement of the Rotary cap 37 is however in one by a stop 38 Direction limited. In the other swivel direction is one Spring preload applied, so that on the front of the spherical cap 37 existing spherical section milling a corresponding counterpart 35 on an intersection plate 30 can snap easily.

8 shows a schematic rail plan for a paper roll transport system according to the invention, in which Transport trolleys of the aforementioned type by hand or on Sections also automatically by towing conveyors can be moved.

A rail path here consists of two running rails 60 together, parallel to each other at a distance from the running elements the trolleys are spaced apart. In Crossing areas of the rail tracks are crossing plates 30 embedded in the floor. In the crossing points are as Extension of the rails 60 guide grooves 32 in the Junction plate milled. The guide grooves 32 have a cross-sectional shape that that of the guide profiles of the Corresponds to rails 60. Each also has Intersection plate 30 has a rotary guide groove 31, which in turn has a cross-sectional shape that corresponds to the cross-sectional shape of Guide grooves 32 and the guide profiles of the rails 60 corresponds. The rotary guide groove 31 is circular and goes through the intersection of the individual guide grooves 32.

A detail X of FIG. 8 is shown in FIG. 10. Out of this it can be seen that by milling the individual Guide grooves 31 and 32 at the intersection of the side guides for the balls of the dolly. In return discs 70 are used, each one therein milled cross profile with trough-shaped or radius-shaped Have cross-section. This is also critical Areas of the crossing points guide a roller guaranteed. The trough-shaped guide profiles 71 in the Disc 70 extend in the extension of the guide grooves 32 a crossing plate 30. The discs 70 are with Washers 76 underlaid. With longer use of the a softer material than the washers 70 Intersection plates 30 result in a corresponding one Wear of the guide grooves 32. About this wear One or more washers 75 are to be compensated removed so that the washers 70 of the actual height the guide grooves 32 can be adjusted.

Finally, FIG. 9 is a schematic Cross-sectional view shown by a track 60 in which a ball 4 rolls. As a wear protection here is one additional sheet steel insert 60a used, which means a double-sided adhesive tape on the running rail is glued on.

In the following, the transport of a paper roll 50 is now on one of the transport car 1 (201) explained. For that it will Ramp part 11 attached to a dolly. By Rolling up a roll of paper 50 on the ramp 11 is from one determined roll height by the weight of the paper roll the ramp 11 tilted. The ramp stem 11a fits here in the side surface of the support element 2. Then can the trolley 1 with the paper roll 50 thereon to be moved on the rails 60.

If the trolley 1 in an intersection from previous railroad will be led away, so the Push trolley 1 so far onto the crossing plate until the centering device 5 on the ball section 35 Intersection plate snaps into place. Then the trolley 1 is on rotated along the rotary guide profile 31 until it is below Overcoming the spring force of the centering device on the new rail track can be rolled on. With straight lines Guide a trolley 1 over a Crossing plate becomes the spring force of the centering device to be overcome.

Claims (32)

Paper roll transport trolley, with a support element (2; 202) for a paper roll (50) and a plurality of running elements (4; 204) arranged thereon, which are intended for rolling in a running rail (60) and which can be rolled in several directions. Paper roll transport trolley according to claim 1, characterized characterized in that groups of running elements (4; 204) at two opposite outer edge areas of the Support element (2; 202) are arranged. Roll paper trolley according to claim 2, characterized characterized in that a group of running elements two spaced apart running elements (4; 204). Roll paper trolley according to claim 2, characterized characterized that a group of running elements more as two running elements (4; 204) comprising one another are evenly spaced in a row. Paper roll transport trolley according to claim 1 or 2, characterized in that the underside (21) of the Support element (2), seen in cross section, upwards includes angled side parts and the running elements (4) on the outer edge areas of these side parts are arranged. Paper roll transport trolley according to claim 1, characterized characterized in that at least on one long side of the Rest elements (2) one towards the floor extending ramp rotatable about a horizontal axis (11) is provided. Paper roll transport trolley according to claim 6, characterized in that the ramp (11) has a bearing point (12) at which it can be releasably placed on the trolley (1) and on which the ramp (11) can be rotated, and a section (11a) of the ramp (11) projects beyond this bearing point (12) and can be inserted into a recess (6) in the support element (2). Paper roll transport trolley according to claim 1, characterized characterized in that in the central region of the Support element (2; 202) a centering element (5; 205) with which the trolley (1; 201) is immovably fixable, but at the same time around its vertical axis is rotatable. Roll paper trolley according to claim 8, characterized characterized in that the centering element (5; 205) is spring loaded. Paper roll transport trolley according to claim 8 or 9, characterized in that the centering element (5, 205) a spherical shell (205a) facing the floor or a swiveling, spring-loaded rotating cap (37) includes that with a bottom-side Centering ball section (35) interacts. Paper roll transport trolley according to claim 8 or 9, characterized in that the centering element Centering ball section includes the one bottom-side centering cap interacts. Paper roll transport trolley according to one of claims 1-5, characterized in that one running element each Includes ball (4; 204). Roll paper trolley according to claim 12, characterized characterized in that the ball (4; 204) in a Shell stored on a variety of small balls is. Paper roll transport trolley according to claim 1, characterized characterized in that the support element (202) is an upper part (206) and a lower part (207), which by one The vertical axis can be rotated relative to one another. Paper roll transport trolley according to claim 14, characterized characterized in that the upper part (206) and the lower part (207) against each other via an axial roller bearing (208) are rotatably mounted. Paper roll transport system, in particular for transporting paper rolls in a print shop, with a plurality of rails (60) forming a rail network, the have a substantially flat guide profile (61) for guiding running elements (4; 204) of a paper roll transport carriage (1; 201) according to one of the preceding claims and are connected to one another at intersection or branch points via fixed intersection elements (30) with guide grooves (32) formed therein which correspond to the guide profiles (61) in the running rails (60) and which intersect one another. Paper roll transport system according to claim 16, characterized characterized in that two parallel to each other running, flat guide profiles in a running rail available. Paper roll transport system according to claim 16, characterized characterized in that two spaced apart Running rails (60), each with a flat one Guide profile (61) are available. Paper roll transport system according to claim 16, 17 or 18, characterized in that a running rail (60) is made of steel. Paper roll transport system according to claim 16, 17 or 18, characterized in that the guide profile (61) in the running rail (60) an essentially V-shape owns, whose profile flanks one that rolls in it Running element (4; 204) adapted angle of advantageously include 90-170 °. Paper roll transport system according to claim 16, characterized characterized in that the center of the intersecting Guide profiles (32) in a crossing element (30) Transport trolley centering element (35) is present. Paper roll transport system according to claim 21, characterized characterized in that the trolley centering element over the top of the crossing element (30) protruding ball section (35) comprises. Paper roll transport system according to claim 21, characterized characterized in that the trolley centering element (35) in the crossing element (30) can be raised and lowered is appropriate. Paper roll transport system according to claim 21, characterized in that an additional rotary guide groove (31) is provided in the crossing element (30), which has a profile cross section which corresponds to the straight guide grooves (32) in the crossing element (30), and which describes a circle in the top view of the crossing element (30), which goes through the intersection of the straight guide grooves (32) intersecting in the crossing element (30). Paper roll transport system according to one of claims 16 or 21-24, characterized in that the Crossing element is a steel plate (30). Paper roll transport system according to claim 25, characterized characterized in that the straight guide grooves (32) and the rotary guide groove (31) in the crossing plate (30) are milled. Paper roll transport system according to claim 24, characterized characterized in that at the intersections of the rectilinear guide grooves (32) and the rotary guide groove (31) a supporting element (70) is firmly inserted, a guidance of the running elements (4; 204) in the Area in which the guide flanks of the guide grooves are no longer available. Paper roll transport system according to claim 27, characterized characterized in that the support element (70) intersect Guide grooves (71), which according to the rectilinear Guide grooves (32) in the crossing plate (30) are aligned but less deep and have a smaller width. Paper roll transport system according to claim 27, characterized characterized in that the additional element with at least a washer (75) is underlaid. Paper roll transport system according to claim 16, characterized characterized that the rail network is straight and includes curved track parts. Paper roll transport system according to claim 16, characterized characterized in that the guide profile by separate, detachably fastened wear bands (60a) is formed. Paper roll transport system according to claim 31, characterized characterized in that the wear bands (60a) by means of a double-sided adhesive tape on the running rails are releasably glued on.

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