EP3475486B1 - Material hauling wagon assembly, and method for loading the material hauling wagon assembly - Google Patents

Description

The invention relates to a material conveyor vehicle assembly made up of different material conveyor vehicles, which have a material conveyor vehicle for functional coupling to a second material conveyor vehicle, and to a method for loading the material conveyor vehicle assembly.

It is known from the prior art to use work trains in track construction and track renovation, in which materials that have been removed and/or to be installed are temporarily stored in material conveyor silo wagons (hereinafter also MFS wagons or material conveyor wagons) and transported to an intermediate storage facility or to a Place of use are transported from a loading point on conveyors from wagon to wagon or to an unloading point on the conveyors of the wagon. There are material conveyor vehicles of different designs and types, which differ in terms of the type and arrangement of the existing conveyors. In general, MFS wagons have a floor conveyor device in the wagon container, usually a floor conveyor belt (it can also be a matter of several conveyor belts running in parallel), which or which at least at one end (in the conveying direction) is assigned a transfer conveyor device (usually a swiveling transfer conveyor belt), with which the material is conveyed onto the floor conveyor belt of an adjacent wagon. Simple MFS cars are only equipped with such a floor conveyor and an associated transfer conveyor.

The materials are, for example, loaded onto one of the frontmost of these simple material conveyor vehicles at a site on a construction site from a loading station or a mechanical cleaning machine that is coupled in the association of work and material conveyor vehicles. The material accumulates on the floor conveyor belt at the loading point inside the wagon container. After the accumulation reaches a maximum loading height, the floor conveyor, which can cover the entire bottom of the wagon container, is operated to move in a conveying direction away from the loading point, so that the wagon container of this material conveyor wagon is loaded from the loading point in the conveying direction. When the material reaches the end of the floor conveyor belt of this material conveyor vehicle, the material is transferred by means of the transfer conveyor device to the floor conveyor belt of an adjacent coupled one corresponding material conveyor wagon and, if necessary, other coupled wagons of the same type.

After the material transport wagons have been loaded, the wagon formation is transported to an interim storage facility and unloaded there. Only then can new material be loaded from the interim storage facility into the material conveyor vehicle and taken to the installation site. With these simple material transport vehicles, double routes are thus to be covered, or two wagon groups made up of material transport vehicles must be used to transport dismantled materials from the site to the interim storage facility and to transport new materials in the opposite direction.

Therefore, there are MFS wagons that not only have a floor conveyor with an associated transfer conveyor at at least one end, but also a roof conveyor on the wagon container, which is also usually formed from conveyor belts. These extend as an additional transport path over the entire length of the wagon and usually have swiveling ends for transferring the material to the roof conveyor of an adjacent wagon. For example, material removed at the site can be placed on the roof conveyor belt at the loading point and transported away from the loading point, while at the same time new material is transported via the floor conveyor in the opposite direction from the material conveyor wagon to the installation site. This frees up loading space in the loading container of the material truck, which is furthest away from the installation and loading point, which can be filled with the removed waste material that is transported via the roof conveyor belts. For this purpose, the last material truck at the end has a shortened roof conveyor system so that the material can fall into the loading container onto the floor conveyor belt. The loading of the extended material conveyor wagon with removed material via the floor conveyor device takes place in the opposite direction compared to the simple material conveyor wagon.

After the new materials have been unloaded and the dismantled material loaded, the wagon formation can be moved to the interim storage facility, and there, in a similar manner, the old material can be unloaded via the floor conveyor belts and new material can be unloaded via the roof conveyor belts onto the floor conveyor belt of the last wagon, which becomes free at the same time, and then into the correspondingly free front wagons give up.

With these material conveyor wagons, which have been expanded to include a roof conveyor device, only half the distances have to be covered in comparison to the simple material conveyor wagons, or one wagon combination is sufficient for the same performance.

Out of EP 2 194 189 A2 such a wagon association is known from extended material conveyor wagons, each of which has a roof conveyor device in addition to floor and transfer conveyors, which is formed by two shortened, overlapping roof conveyor belts for simplified decoupling of the wagons. The second roof conveyor belt in the conveying direction ends above the first roof conveyor belt in the conveying direction of a coupled material conveyor vehicle. To load the respective material conveyor vehicle, the roof conveyor belts can be shortened so that there is no longer any overlap and the material conveyed by the first roof conveyor belt falls into the material container below.

In the case of wagon formations consisting of simple material conveyor wagons, compared to material conveyor wagons extended with roof conveyor belts, twice the number of wagons or shuttle traffic with double routes is required for the same transport performance, but the simple material conveyor wagons are sometimes cheaper in shift operation due to the simpler technology, especially since they are in existence simple material handling vehicle is very large on the market, and these material handling vehicles are therefore available in large numbers.

The use of different material transport vehicles in a work train, for example, is out EP 2 708 647 A2 known, however, the different material conveyor wagons for loading are not directly coupled there, but separated by processing work wagons: Removed material is transported from a construction site via the roof conveyor belts of the extended material conveyor wagons to the processing wagon, in which the removed materials are processed. Reusable material is then transported back to the job site via the floor conveyors of the same extended material conveyor truck, while non-reusable materials are transferred via a transfer conveyor from the processing facility of the processing work truck in the opposite direction as spoil onto the floor conveyor of a simple material transport truck.

The working directions of the simple and extended material trucks when loading are in relation to the floor conveyors and the transfer conveyors opposite. A line-up of different types of work trolleys for loading according to the prior art therefore leads to a functional interruption. It is another object of the present invention to provide a material truck assembly that combines simple and advanced material trucks whose conveying directions are opposite when loading with respect to the floor conveyors and the transfer conveyors, and yet suffers no functional interruption.

This problem is solved by a material conveyor vehicle combination with the features of claim 1.

The further object of enabling the loading without functional interruption of a group of material handling vehicles from different material handling vehicles is solved by the method with the features of independent claim 8 . Further developments of the devices and the method are set out in the dependent claims.

A material conveyor vehicle association according to the invention consists of at least two different material conveyor vehicles coupled to one another, with a first material conveyor vehicle being a material conveyor vehicle with a shortened roof conveyor device and the intermediate vehicle conveyor device. The "first" material conveyor vehicle should not primarily be understood to mean the position of the vehicle in the sequence of the material conveyor vehicle association, but rather a "first type" of a material conveyor vehicle.

A first material conveyor wagon, via which different material conveyor wagons can be functionally coupled to one another, in particular material conveyor wagons that differ in terms of the loading conveying direction of the floor conveying devices, has a roof conveyor device that is shortened in relation to a wagon length and has a roof section on a

End of the material truck leaves free and is operated for loading in a first conveying direction to the free end. The roof section left free is open or can be opened, so that material can fall from the roof conveyor through the roof section onto the floor conveyor.

Furthermore, the first material conveyor vehicle has a floor conveying device which, for loading, is operated in a second direction opposite to the first conveying direction and a transfer conveyor device assigned to the floor conveyor device in the second conveying direction. For functional coupling to a second material conveyor, the first material conveyor has an intermediate carriage conveyor that can be operated for loading in the first conveying direction, which is assigned to the shortened roof conveyor of the material conveyor and extends from below a discharge end of the shortened roof conveyor to beyond the free end of the material conveyor, so that the intermediate carriage conveyor device can be positioned with its discharge end above a conveyor device of the coupled second material conveyor carriage and thus enables targeted forwarding of the material conveyed in the first conveying direction via the shortened roof conveyor device to a coupled material conveyor carriage. It is advantageously possible to retrofit existing material conveyor vehicles with a shortened roof conveyor belt and the open, free roof end by arranging a corresponding intermediate vehicle conveyor device to form a first material conveyor vehicle, which offers various logistical options.

In the wagon train according to the invention, the first material conveyor wagon is coupled with a second material conveyor wagon (i.e., a material conveyor wagon of a second type, which differs from the first type) at the end free of the shortened roof conveyor belt in relation to the first loading conveying direction, which has at least one floor conveying device and has at least one transfer conveyor device assigned to the floor conveyor device. The discharge end of the intermediate carriage conveyor of the first material conveyor can be positioned above the floor conveyor of the coupled second material conveyor, which is a simple material conveyor without a roof conveyor, which only has the floor conveyor and the associated transfer conveyor, which are operated for loading in one conveying direction, which is opposite to the second conveying direction of the floor conveying device of the first material conveyor vehicle. The discharge end of the intermediate carriage conveyor device of the first material conveyor carriage thus comes to lie above the floor conveyor device of the coupled second material conveyor carriage. This makes it possible to combine the material conveyor wagons, which differ in terms of the conveying direction of the floor conveying devices, in a material conveyor wagon association, and thus to use the advantages of both wagon types.

The combination of material conveyor wagons that have been expanded with a roof conveyor device and the simple material conveyor wagons that have no roof conveyor device, which is made possible in this way, results in logistical advantages when handling a construction site. Depending on the quantities of material to be unloaded and picked up at a construction site This means that the large number of available, low-cost, simple material conveyor vehicles can be combined with the more cost-intensive material conveyor vehicles that are equipped with a roof conveyor system, which can then be used in the minimum required number. In this way, construction site processing can also be implemented without shuttle traffic and thus in particular without interruption in a continuously ongoing loading and unloading process if the number of material conveyor wagons with roof conveyor system that is actually required for this purpose is not available. Furthermore, there are cost advantages through the use of existing and available in large numbers simple material trucks in the inventive combination with the extended material trucks, the number of which can be limited to a required minimum in the material truck association. Depending on the type of construction site processing, the ranking of the material conveyor vehicle association can be carried out individually using the largest possible number of the more cost-effective, simple material conveyor vehicles without a roof conveyor system.

An intermediate carriage conveyor can be formed by an intermediate roof conveyor that is fixed or detachable to the first material conveyor and bridges the distance between the shortened roof conveyor belt of the first material conveyor and the coupled second material conveyor.

Alternatively, an intermediate carriage conveyor device can also be formed by a combination of a shorter intermediate roof conveyor device arranged fixedly or detachably on the first material conveyor carriage in cooperation with a supplementary conveyor device arranged permanently or detachably on the second material conveyor carriage, the shortened intermediate roof conveyor device together with the supplementary conveyor device covering the distance between the shortened roof conveyor belt of the first Material conveyor wagon and the coupled second material conveyor bridged.

A further alternative provides that the intermediate carriage conveyor device is formed by a combination of a pivoting conveyor device which is articulated in the floor area of the first material conveyor wagon and can be moved between a use and a non-use position and an additional conveyor device which interacts with it and which can be pivoted and/or moved on the first material conveyor wagon or is arranged removably on the first and/or the second material conveyor vehicle.

The overhead conveyor may be a conveyor belt assembly in a support frame. Accordingly, the shortened intermediate roof conveyor and the supplementary conveyor device are each formed by a conveyor belt arrangement in a carrier frame.

Preferably, the intermediate overhead conveyor as a whole or the conveyor belt assembly may be movable within the support frame from an in-use position in which the conveyor belt assembly extends from beneath the discharge end of the shortened overhead conveyor to a non-in-use position and vice versa.

The non-use position can, for example, either be located under the shortened overhead conveyor or be distant from the dropping point of the shortened overhead conveyor in the longitudinal and/or transverse direction. In the embodiment with the shortened intermediate roof conveyor device, the conveyor device as a whole or each conveyor belt arrangement in the support frame can also be moved from a position of use to a position of non-use, with possible non-use positions of the shortened intermediate roof conveyor device corresponding to the above-mentioned non-use positions of the intermediate roof conveyor device. If necessary, the supplementary conveyor device can also be designed to be movable in order to be able to be transferred from a use position to a non-use position and back.

Each intermediate carriage conveyor device that can be moved between a use position and a non-use position is provided with at least one drive, e.g. B. a longitudinal and / or transverse drive, guide elements and / or adjusting elements for transferring the intermediate carriage conveyor between the use and the non-use position equipped or operative, so interacting, connected thereto.

In order to transfer the intermediate wagon conveyor device, the at least one drive and/or the actuating elements can be actuated manually or semi-automatically or fully automatically by at least one control device of the material conveyor wagon assembly. In particular for the fully automatic control of the transfer of the intermediate conveyor between the use and non-use position, the at least one control device is coupled to at least one sensor which is designed, for example, to detect a loading status of one of the material conveyor vehicles.

In order to enable a central transfer of the material from the first to the second wagon when cornering during the work of the material conveyor wagon association on a track construction site and to compensate for height differences on undulating tracks and in particular to avoid collisions of the intermediate roof conveyor system, the intermediate roof conveyor can be pivotable about a vertical axis and/or about a transverse axis of the carriage.

The same can be provided for the supplementary conveying device interacting with the shortened intermediate roof conveying device. The additional conveyor device, which interacts with the pivoting conveyor device as an alternative intermediate carriage conveyor device, can also be designed to be pivotable about a vertical axis and/or about a transverse axis of the carriage. The swivel drives and/or actuating elements provided for this purpose can be actuated manually or semi-automatically or fully automatically by at least one control device of the material conveyor wagon association, with the at least one control device preferably being coupled to at least one sensor for detecting a track position and/or a track course. The control device can be a further control device to the above control device for actuating the transfer between use and non-use position; however, the material conveyor vehicle association can also have a central control device for all control tasks.

The detachable or detachable elements of the various embodiments of the intermediate car conveyor devices of the material conveyor car association, i. H. the intermediate roof conveyor device that is detachably arranged on the first material conveyor wagon, the supplementary conveyor device that is detachably arranged on the second material conveyor wagon, or the additional conveyor device that is detachably arranged on the first and/or the second material conveyor wagon, can each have engagement elements that are designed to engage with a gripping device of a lifting device, wherein it can be, for example, a crane device or an excavator. If necessary, the crane device can be a gantry crane which, if the material conveyor vehicle assembly has corresponding longitudinal rails, can be moved along the assembly in order to move the respective conveyor device, if necessary, between a storage location on a wagon provided and designed for this purpose, which is coupled to the material conveyor wagon assembly is, and to transport the site between the first and second material truck.

For the simple attachment and exact alignment of the detachable or detachable elements of the various embodiments of the intermediate carriage conveyor devices, the first and/or the second material conveyor carriage can have corresponding receiving and/or positioning elements. For example, adjustment bolts, movable supports or guides can be used for this purpose, which ensure correct positioning and also movements in the horizontal or vertical direction.

Furthermore, a material conveyor wagon group according to the invention can have at least one (third) material conveyor wagon with a roof conveying device which is continuous in relation to the wagon length and which can be operated for loading in the first conveying direction. Like the first material conveyor wagon, these material conveyor wagons are also equipped with a floor conveying device which can be operated for loading in the second conveying direction opposite to the first conveying direction, and a transfer conveyor device assigned to the floor conveying device in the second conveying direction. The third material trolley with the continuous roof conveyor can be coupled on the side of the first material trolley which faces away from the free end.

A preferred sequence can provide that the material conveyor wagon group has one or more third material conveyor wagons with a continuous roof conveyor device, starting from a loading point, followed by a first material conveyor wagon with a shortened roof conveyor device and the intermediate wagon conveyor device and then one or more second material conveyor wagons without a roof conveyor device. This makes it possible to first load the second material conveyor vehicle(s) from the loading point via the roof conveyor devices and the shortened roof conveyor device and via the intermediate vehicle conveyor device. Subsequently or alternatively, by dismantling the intermediate carriage conveyor device or moving it into a non-use position, the first material conveyor carriage and subsequently the front third material conveyor carriage can be loaded in the opposite direction via the floor conveyor belts.

However, other sequences are also conceivable and, if required, more than one first material conveyor wagon with a shortened roof conveyor belt and intermediate wagon conveyor device can be used if an optional onward transport to another wagon type is provided.

The material conveyor wagons of the wagon association according to the invention are used for the promotion and storage of bulk material. The material conveyor wagons are not used for processing the material. It is not impossible, however, that a material conveyor wagon combination according to the invention can be supplemented to form a track work train by working wagons which, in addition to conveying devices, also have processing devices or removal and/or installation devices for the material.

A method according to the invention for loading a material conveyor vehicle association with different material conveyor vehicles provides that the different material conveyor vehicles be lined up in such a way that a first material truck with the shortened

roof conveyor and with the intermediate carriage conveyor in relation to a first loading conveying direction in front of a second material conveyor, which is a second material conveyor with floor and transfer conveyor, but without roof conveyor, so that the intermediate carriage conveyor is positioned in a position of use above the floor conveyor of the coupled second material conveyor . As a result, material that is conveyed by the shortened roof conveyor device can be conveyed via the intermediate carriage conveyor device to the second material conveyor carriage and can be conveyed further there with the floor conveyor device in the first conveying direction. The method also provides that, as an alternative to the conveyance via the intermediate carriage conveyor device or before or afterward by removing the intermediate carriage conveyor device or transferring the intermediate carriage conveyor device into a non-use position, the material that is conveyed by the shortened roof conveyor device is transported through the open, free roof end onto the Floor conveyor of the first material trolley falls and is there in a second conveying direction, which is opposite to the first conveying direction, promoted. The method can particularly preferably provide that a first material truck with the shortened roof conveyor device and the intermediate truck conveyor device is arranged at least between the (third) material truck with a continuous roof conveyor device and the (second) material truck without a roof conveyor device, so that the discharge end of the intermediate truck conveyor device is in a usage position above the floor conveyor device of the coupled second material truck can be positioned. The loading is now carried out by placing material on the continuous roof conveyor device of a first (third) material conveyor vehicle in relation to the first conveying direction, conveying the material in the first conveying direction via the continuous roof conveyor device(s) to the shortened roof conveyor device of the first material conveyor vehicle, whereby by selectively arranging the intermediate carriage conveyor device in the use position or in the non-use position, either the material is conveyed to the coupled second material conveyor carriage on its floor conveyor belt and transported further there in the first conveying direction, or from the shortened roof conveyor device through the open, free roof end onto the floor conveyor device of the first Material trolley falls, and there in the second conveying direction, which is opposite to the first, can be further promoted.

The created combination possibilities of different material conveyor wagons and the different operating variants open up different possibilities for loading in order to optimally utilize the existing material conveyor wagons and to optimize the transport logistics.

Other embodiments, as well as some of the advantages associated with these and other embodiments, will become apparent and better understood from the following detailed description with reference to the accompanying figures. Items or parts thereof that are substantially the same or similar may be given the same reference numbers. The figures are merely schematic representations of embodiments of the invention.

Fig. 1

eine Seitenschnittansicht eines Arbeitswagenverbands gemäß Stand der Technik aus mit Dachförderbändern erweiterten Materialförderwagen für zwei Materialförderrichtungen,

Fig. 2

eine Seitenschnittansicht eines Arbeitswagenverbands gemäß Stand der Technik aus einfachen Materialförderwagen mit Bodenförderbändern für eine Materialförderrichtung,

Fig. 3

eine Seitenschnittansicht eines erfindungsgemäßen Arbeitswagenverbands aus erweiterten und einfachen Materialförderwagen mit einer Zwischenwagenfördereinrichtung des Materialförderwagens ersten Typs an der Kopplungsstelle der unterschiedlichen Arbeitswagen,

Fig. 4

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit der Zwischenwagenfördereinrichtung,

Fig. 5

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit einer alternativ befestigten Zwischenwagenfördereinrichtung,

Fig. 6

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit einer alternativen zweiteiligen Zwischenwagenfördereinrichtung,

Fig. 7

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit einer alternativen Anordnung der Zwischenwagenfördereinrichtung für einen alternativen Betriebsmodus der Materialförderwagen,

Fig. 8

eine Draufsicht auf die Zwischenwagenfördereinrichtung aus Fig. 7,

Fig. 9

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit einer alternativen Zwischenwagenfördereinrichtung für einen alternativen Betriebsmodus der Materialförderwagen,

Fig. 10

eine Draufsicht auf die Zwischenwagenfördereinrichtung aus Fig. 9,

Fig. 11

eine vergrößerte Seitenschnittansicht entsprechend Fig. 9 mit einer alternativen Zwischenwagenfördereinrichtung,

Fig. 12

eine Draufsicht auf die Zwischenwagenfördereinrichtung aus Fig. 11,

Fig. 13

eine Seitenschnittansicht eines erfindungsgemäßen Arbeitswagenverbands aus erweiterten und einfachen Materialförderwagen mit einem Materialförderwagen ersten Typs mit einer Zwischenwagenfördereinrichtung an der Kopplungsstelle der unterschiedlichen Arbeitswagen in einem Belade- und Entladebetriebsmodus,

Fig. 14

eine Seitenschnittansicht entsprechend Fig. 13 in einem alternativen Betriebsmodus,

Fig. 15

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit einer in einer Nichtgebrauchsstellung unter dem Dachförderband angeordneten Zwischenwagenfördereinrichtung,

Fig. 16

eine vergrößerte Seitenschnittansicht entsprechend Fig. 15 mit der Zwischenwagenfördereinrichtung in Gebrauchsstellung,

Fig. 17

eine Draufsicht auf den mit einem einfachen Materialförderwagen gekoppelten Materialförderwagen ersten Typs mit der Zwischenwagenfördereinrichtung in Gebrauchsstellung in Geradeausfahrt,

Fig. 18

eine Draufsicht entsprechend Fig. 17 in Kurvenfahrt,

Fig. 19

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit einer alternativen zweiteiligen Zwischenwagenfördereinrichtung in einer Nichtgebrauchsstellung,

Fig. 20

eine vergrößerte Seitenschnittansicht entsprechend Fig. 19 mit der zweiteiligen Zwischenwagenfördereinrichtung in Gebrauchsstellung,

Fig. 21

eine vergrößerte Seitenschnittansicht des mit einem einfachen Materialförderwagen gekoppelten Materialförderwagens ersten Typs mit einer alternativen zweiteiligen Zwischenwagenfördereinrichtung in Gebrauchsstellung, und

Fig. 22

eine vergrößerte Seitenschnittansicht entsprechend Fig. 21 mit der zweiteiligen Zwischenwagenfördereinrichtung in Nichtgebrauchsstellung.

show:

1

a side sectional view of a working car association according to the prior art from material conveyor cars extended with roof conveyor belts for two material conveying directions,

2

a side sectional view of a working car assembly according to the prior art from simple material conveyor wagons with floor conveyor belts for a material conveying direction,

3

a side sectional view of a working car association according to the invention from extended and simple material conveyor wagons with an intermediate car conveyor device of the material conveyor wagon of the first type at the coupling point of the different working wagons,

4

an enlarged side sectional view of the first type of material truck coupled to a simple material truck with the intermediate truck conveyor device,

figure 5

an enlarged side sectional view of the first type of material conveyor wagon coupled to a simple material conveyor wagon with an alternatively attached intermediate wagon conveyor device,

6

an enlarged side sectional view of the first type of material conveyor wagon coupled to a simple material conveyor wagon with an alternative two-part intermediate wagon conveyor device,

7

an enlarged side sectional view of the first type of material conveyor truck coupled to a simple material conveyor truck with an alternative arrangement of the intermediate truck conveyor device for an alternative operating mode of the material conveyor truck,

8

Figure 12 shows a plan view of the inter-car conveyor 7 ,

9

an enlarged side sectional view of the first type of material handling vehicle coupled to a simple material handling vehicle with an alternative intermediate vehicle conveyor device for an alternative operating mode of the material handling vehicle,

10

Figure 12 shows a plan view of the inter-car conveyor 9 ,

11

an enlarged side sectional view accordingly 9 with an alternative intermediate car conveyor,

12

Figure 12 shows a plan view of the inter-car conveyor 11 ,

13

a side sectional view of a work carriage association according to the invention from expanded and simple material conveyor carriage with a material conveyor carriage of the first type with an intermediate carriage conveyor device at the coupling point of the different work carriages in a loading and unloading operating mode,

14

a side sectional view accordingly 13 in an alternative operating mode,

15

an enlarged side sectional view of the material conveyor wagon of the first type coupled to a simple material conveyor wagon with an intermediate wagon conveyor device arranged in a non-use position under the roof conveyor belt,

16

an enlarged side sectional view accordingly 15 with the intermediate carriage conveyor in the position of use,

17

a top view of the first type of material conveyor coupled to a simple material conveyor with the intermediate wagon conveyor in the position of use when driving straight ahead,

18

a top view accordingly 17 in cornering,

19

an enlarged side sectional view of the first type of material conveyor coupled to a simple material conveyor carriage with an alternative two-part intermediate carriage conveyor in a non-use position,

20

an enlarged side sectional view accordingly 19 with the two-part intermediate carriage conveyor in the position of use,

21

an enlarged side sectional view of the first type of material handling truck coupled to a simple material handling truck with an alternative two-part intermediate truck conveyor in the position of use, and

22

an enlarged side sectional view accordingly 21 with the two-part intermediate car conveyor device in the non-use position.

A material conveyor car assembly according to the invention made up of different material conveyor cars, the working directions of which are opposite in the associations formed from simple or extended material conveyor cars when loading in relation to the floor conveyor belt and the associated transfer conveyor belts, provides the sequence of the different material conveyor cars for use in combination.

As a result, both the advantages of the extended material conveyor wagons and those of the more cost-effective simple material conveyor wagons can be used. With this sequence and the associated mode of operation, new materials can be brought into the construction site with extended material transport vehicles, for example, and old material that has been removed can be loaded onto simple material transport vehicles. The combination of simple and expanded material conveyor vehicles with functional coupling for loading made possible by means of the material conveyor vehicle of the first type allows construction site processing to be optimized in terms of costs and logistics by adapting the space required for the vehicle, by reducing the number of expanded material conveyor vehicles required for site requirements to a minimum can be.

1 shows a conventional wagon association formed from roof conveyor belts 6.60 extended material conveyor wagons 1, 2', which is operated together with the floor conveyor belts and the associated transfer conveyor belts 4.5 in the rolling system, as shown by the arrows. The last carriage 2', which is located farthest from the loading and unloading point, differs from the front carriage 1 (which can be a head carriage or an intermediate carriage) in that the overhead conveyor 60 is shortened and not like the overhead conveyor 6 extends over the entire length of the car. Material that arrives from a loading point (on the left in the illustration) according to the unfilled arrows via the roof conveyor belt 6 via the overlapping swivel ends 61 onto the shortened roof conveyor belt 60, at the end of which falls through the open wagon container onto the loading end of the floor conveyor belt 4, which is in the opposite direction direction (indicated by the filled arrows) in order to transport stored material there via the transfer conveyor belt 5 into the front carriage 1, which in the same way feeds stored and supplied material via the floor conveyor belt 4 and the transfer conveyor belt 5 to the front of an unloading point. The space that becomes free as a result of this unloading process, starting from the loading end, is filled with the material supplied via the roof conveyor belts 6,60. Of course, the wagons 1, 2' can also be loaded in this way if there is no material to be unloaded in the wagon containers. The floor conveyor belts 4 are consequently always filled in one conveying direction from the loading end in the direction of the loading and unloading point.

In 2 shows a conventional group of wagons made up of simple material conveyor wagons 3 that only have floor conveyor belts 4 and associated transfer conveyor belts 5 . The unfilled arrows here show the loading conveying direction of the floor conveyor belts 4 starting from the loading point (on the left in the illustration), in which the wagon containers are filled and which are opposite to the conveying direction of the floor conveyor belts 4 of the wagon association made up of extended material conveyor wagons 1, 2' in 1 is.

In order to combine the different types of material conveyor vehicles in use, an interface between the different types of material conveyor vehicles is required, which enables sequential work with different working directions of the respective material conveyor vehicles. This is achieved by the intermediate carriage conveyor device, which can preferably and in the simplest case be formed by a conveyor belt, also referred to below as an intermediate roof belt.

As in Figures 3 to 22 As can be seen, the intermediate conveyor device 7 is arranged in the terminal or last extended material conveyor 2 in relation to the loading and unloading point, which has the shortened roof conveyor belt 60 at the loading end and to which a (first) simple material conveyor 3 is coupled. The intermediate car conveyor 7 is assigned to the shortened roof conveyor belt 60 , so that material brought in via the roof conveyor belt 60 is conveyed further by the intermediate car conveyor 7 . At least part of the intermediate carriage conveyor device 7 can be detachably or permanently fastened in this terminal or last extended material conveyor carriage 2 . The intermediate carriage conveyor 7 extends to the coupled simple material conveyor 3, so that it enables the transfer of the material from the shortened roof conveyor belt 60 to the floor conveyor 4 of the coupled simple material conveyor 3.

It goes without saying that a group of wagons according to the invention, in contrast to what is shown, can also have more than the two or four material conveyor wagons 1, 2, 3 shown, depending on the quantity of material to be transported or availability.

Through this intermediate car conveyor device 7, material can now be transported from the roof conveyor belts 6 of the extended material conveyor car 1 via the shortened roof conveyor belt 60 of the extended first-type material conveyor 2 are fed to the simple material conveyor 3, which are loaded via their floor conveyors 4 (floor conveyor belts). With the wagon formation 10 according to the invention, it is therefore possible to simultaneously bring in new material via the floor conveyor belts 4 of the extended material conveyor wagon 1 and the material conveyor wagon of the first type 2 via an unloading point to a construction site and removed old material in the wagon formation 10 from the extended material conveyor wagon 1, material conveyor wagon of the first type 2 and to load simple material trolley 3. Thus, extended material trucks 1, material trucks of the first type 2 and simple material trucks 3 can be lined up and yet simultaneously removed from the construction site with only one wagon association 10 old material and new material can be supplied to the construction site.

The material conveyor car association according to the invention, which combines extended and simple material conveyor cars, also enables the combination of different operating modes, namely that of the rolling system of the extended material conveyor car using a freely selectable removal and installation unit, and the use of the simple material conveyor car. The number and arrangement of the carriages can be as desired. However, it makes sense to arrange the simple material trucks in the loading direction behind the extended material trucks, with the extended material trucks of the first type with the shortened roof conveyor and the intermediate truck conveyor enabling the transfer between the different material trucks. In general, however, the possibility of material transfer from a simple material conveyor vehicle via the transfer conveyor device to the roof conveyor device of an extended material conveyor vehicle is not ruled out.

The type and design as well as the attachment of the intermediate carriage conveyor 7 can be different. 3 and enlarged 4 show a group of wagons 10 with an intermediate roof conveyor belt 70 as an intermediate wagon conveyor device 7, which is permanently installed on the terminal extended material conveyor wagon of the first type 2 with the shortened roof conveyor belt 60. The intermediate roof belt 70 extends from the dropping point of the shortened roof conveyor belt 60 to over the container wall of the coupled simple material transport vehicle 3 in order to drop material onto the floor conveyor belt 4 there. The material accumulates at the dropping point up to the predetermined loading height, which can be detected by sensors, before the floor conveyor belt 4 is moved further in the same conveying direction (empty arrows) in order to fill the container. When the cone of material reaches the other end of the wagon, the material is transferred via the transfer conveyor belt 5 handed over to the next simple material trolley 3. While the simple material conveyors 3 are loaded by the roof conveyors 6 of the extended material conveyors 1 via the shortened roof conveyor 60 and the intermediate roof conveyor 70 of the terminal extended material conveyor of the first type 2, the floor conveyors 4 and associated transfer conveyors 5 of the extended material conveyors 1, 2 store material there fed to the unloading point in the opposite direction without first being reloaded there.

However, the intermediate carriage conveyor 7 can also be installed in a removable manner, either in order to be able to assemble the individual material conveyor carriages as required, or also to be able to carry out curved or wavy transfer journeys more easily. In figure 5 the intermediate roof belt 70 is fastened to the material conveyor carriage 2 with a holding device 73, which allows the intermediate roof belt 70 to be removed. In order to fix the removable intermediate roof band 70, one-sided stops can be provided on the extended material conveyor vehicle of the first type 2, so that the intermediate roof band 70 can be screwed or bolted. A rotatable bearing can also be implemented here.

in a 6 In the embodiment shown as an example, the intermediate carriage conveyor device 7 is in two parts and consists of two conveyor belts 70, 71, which are arranged so that they overlap in the conveying direction by means of pivotable ends 72. The first conveyor, the intermediate roof conveyor 70, is attached to the terminal material truck 2, and the second conveyor, the supplementary conveyor 71, is attached (fixedly or detachably) to the simple material truck 3, which is coupled to the terminal extended material truck of the first type 2.

The intermediate roof conveyor belt(s) 70, 71 can be pivoted (about a horizontal transverse axis of the car and/or about a vertical axis) in order to equalize movements of the wagon formation when traveling on tracks in wave crests and valleys as well as in curves and also to avoid collisions of the intermediate roof conveyor device 7. In 17 the arrows indicate the pivotability of the intermediate roof conveyor belt 7 about the vertical axis, while in 18 the intermediate roof belt 7 is shown pivoted in the direction of the arrow, so as to enable material to be conveyed centrally onto the floor conveyor belt 4 of the simple material conveyor carriage 3 in the curve area. Pivoting around the horizontal transverse axis of the car is intended to correct and avoid collisions when driving on bumpy roads. The control of the pivoting can be automated depending on the Track position and the course of the track, which can be detected by sensors. Depending on the design variant, the position of the intermediate roof conveyor belt (or the intermediate roof conveyor belts) can optionally also be shifted so that cornering can be guaranteed.

A slidable or movable intermediate roof conveyor belt 70 has a further advantage which is 7 is shown, in which the intermediate roof conveyor belt 70, which is fastened with a suitable holding device 73, is shifted in the longitudinal direction away from the end of the shortened roof conveyor belt 60, so that material conveyed via the roof conveyor belt 60 is no longer conveyed into the simple material conveyor wagons 3, but over the opened container roof falls on the loading end of the floor conveyor belt 4 of the last extended first type material truck 2, so that the operation mode of the rolling system is achieved. The holding device 73 can, for example, be made telescopic, for which purpose, for example, a sliding carriage or a rack and pinion assembly can be used. Other common sliding techniques can also be used. As an alternative to the longitudinal displacement, a transverse displacement of the intermediate roof conveyor belt (not shown) is also conceivable, or a combination of longitudinal and transverse displacement, so that the material falls over the shortened roof conveyor belt 60 through the open car roof onto the floor conveyor belt 4 .

The intermediate roof band 70 can either be complete, ie support frame 7a and band arrangement 7b together ( Figures 7 and 8 ), or only the band arrangement 7b within the frame 7a ( Figures 9 and 10 ) can be moved in the longitudinal direction (block arrow). This also enables the alternative modes of operation via the roof conveyor belt 60, on the one hand in the position of use of the intermediate roof belt 70 the onward transport provided according to the invention onto the simple material conveyor wagon 3 and on the other hand in the advanced non-use position of the intermediate roof conveyor belt 70 the loading of the floor conveyor belt 4 of the terminal extended material wagon of the first type 2 in the conventional manner of a rolling system. Especially for different types of construction sites and for loading the wagons 1, 2, 3 at the interim storage facility, further advantages of the system are made possible here, in that, depending on the position of the intermediate roof belt 70, material is either fed into the material conveyor wagon 2 or further conveyed to the simple material conveyor wagon 3. In this way, different materials can also be loaded separately according to the type of material onto the different material conveyor vehicles.

After the loading of the simple material conveyor wagon 3 from the roof conveyor belts 6 of the extended material conveyor wagon via the roof conveyor belt 60 and the intermediate roof conveyor belt 70 of the extended material conveyor wagon of the first type 2, the extended material conveyor wagons 1, 2 can be loaded via the floor conveyor belts 4 and associated transfer conveyor belts 5 by the intermediate roof conveyor belt 70 is moved to the non-use position.

Furthermore, an intermediate roof belt 70 can also be designed to be displaceable in such a way that the intermediate roof belt 70 can be moved between a non-use position in which it is arranged below the shortened roof conveyor belt 60 ( 15 ), to a position of use ( 16 ) can be moved in order to carry out the onward promotion of the material conveyed by the roof conveyor belt 60 into the simple material conveyor wagon 3 . The non-use position can be taken both for transfer trips or when the wagon formation is to be operated in the conventional rolling system of the extended material conveyor wagon. Here, too, the intermediate roof band 70 can be moved completely or only the band arrangement 7b within the support frame 7a.

The intermediate roof belt 70 or each intermediate car conveyor 7 can alternatively be designed to be displaceable so that it can be removed or installed in the construction site area, depending on the intended use of the car combination 10 . In this case, engagement devices 74 ( Figures 11 and 12 ) for a suitable lifting device (not shown) with which the belt 70 can be put on and lifted off. To simplify assembly, receiving and/or positioning elements such as supports, profile rails, stops, lugs and bolts, etc. can also be provided on the material conveyor vehicle. In addition, quick-connect systems can be provided on the intermediate roof band and the material conveyor vehicle in order to provide a quick and easy connection of the detachable intermediate roof band to the energy supply and control of the material conveyor vehicle association.

As an alternative to a one-piece or two-piece intermediate roof belt that is fixed, removable or movable in the roof area, an intermediate carriage conveyor 7, as in Figures 19 to 22 shown, have a swivel conveyor 75, which at the loading end of the terminal extended material conveyor 2 in the floor area pivotable about a transverse axis of the carriage horizontally spaced from the end of the shortened Roof conveyor belt 60 is arranged. The pivoting conveyor 75 can be, for example, a belt or simply a chute. The swivel conveyor 75 in 20 and 21 is shown in the position of use, in which further promotion of the material conveyed via the roof conveyor belt 60 to the coupled simple material conveyor carriage 3 is made possible. In this case, the pivotable end of the pivoting conveyor device 75 is below the discharge end of the shortened roof conveyor belt 60. In FIG 19 and 22 shown non-use position is the pivotable end of the pivot conveyor 75 pivoted away from the roof conveyor belt end to the container wall.

The material conveyed from the roof conveyor belt 60 via the pivoting conveyor device 75, which is arranged inclined in the conveying direction in the position of use, reaches an additional conveyor device 76, which extends from the articulated end of the pivoting conveyor device 75 to the coupled simple material conveyor trolley 3, where it ends above its bottom conveyor belt 4 and thus discharges the material there can. The additional conveyor device 76 can, as in 19 and 20 , corresponding to a conventional transfer conveyor belt 5 assigned to the floor conveyor belt 4, with the difference that it is not functionally assigned to the floor conveyor belt 4 but to the pivoting conveyor device 75, although a functional coupling to the floor conveyor belt 4 can be produced when the pivoting conveyor device 75 is dismantled. The additional conveyor device 76 designed as a transfer conveyor belt can be pivotable and/or movable. Optionally, it can also be retracted under the floor conveyor belt 4 for transfer journeys or when the pivoting conveyor device 75 is not in use.

As an alternative to a transfer conveyor belt that is fixed to the extended material conveyor vehicle of the first type 2 and can be pivoted and/or moved as an additional conveyor device 76 that supplements the pivot conveyor device 75, how 21 and 22 show, a bridging belt that can only be installed between the material conveyor vehicles if required can be used as an additional conveyor device 76, which then extends from the articulated end of the pivoting conveyor device 75 to over the floor conveyor belt 4 of the simple material conveyor vehicle 3 that is coupled. As with the detachable intermediate roof belt, corresponding intervention devices and plug-in systems can also be provided on the bridging belt and the material conveyor carriage in order to provide simple and precise positioning, detachable fastening and power supply and control.

The intermediate carriage conveyor device can be controlled both electrically and hydraulically via appropriate drives and actuating elements. It can be partially or fully automated and optionally controlled depending on the transport speed of the material-supplying roof conveyor belts of the extended material conveyor wagon and/or the material-discharging floor conveyor belts of the simple material conveyor wagon.

The material conveyor vehicle groups according to the invention, in which the last extended material conveyor vehicle of the first type is connected to a simple material conveyor vehicle via an intermediate vehicle conveyor device that can be moved or pivoted between a use position and a non-use position, can be used in various operating modes that allow different loading variants to be implemented. While in the position of use the intermediate car conveyor allows the material conveyed via the roof conveyor belts to be conveyed through to the simple material conveyor cars that are connected, the extended material conveyor cars can be moved in rolling motion when the intermediate car conveyor device is arranged in the non-use position (parking position under the roof or in the longitudinal direction at a distance from the end of the roof conveyor belt or pivoted away from it). system are operated. 13 and 14 show the two modes of operation using the example of an intermediate conveyor belt 70, the belt arrangement 7b of which can be displaced in the carrier frame 7a. The loading and unloading points of wagon formation 10 can also be seen here: The roof conveyor belt 6 of the first extended material conveyor wagon 1 is loaded by means of a loading conveyor device 8, which is inclined from a loading device 81 (e.g. loading hopper) arranged near the ground in front of the head, supported by a Fastening device 82 extends to a discharge end, which is arranged over the roof conveyor belt 6. The loading conveyor device 8 can optionally also be moved between a use position and a non-use position (e.g. during transfer journeys), for which purpose the fastening device 82 can be designed to be telescopic and/or pivotable, etc. The pivotable roof conveyor belt end 61 is pivoted here. The unloading takes place below the loading conveyor 8 via the pivoted-out transfer conveyor belt 5 of the first extended material conveyor carriage 1.

A material conveyor vehicle association according to the invention can have any number of material conveyor vehicles, more precisely, any number of extended material conveyor vehicles 1 with a continuous roof conveyor device 6 and simple material conveyor vehicles 3 have - only the number of extended material trucks of the first type 2 with a shortened roof conveyor 60 and the intermediate car conveyor 7 is predetermined and depends on the number of changes from extended material trucks 1, 2 to simple material trucks 3 in the association. So not only the in the Figures 3 to 22 illustrated number and sequence of material conveyor wagons 1, 2, 3 conceivable - the different types of wagons can optionally also be arranged alternately, etc., with only the arrangement of a material conveyor wagon of the first type 2 at the transition between extended material conveyor wagon 1 and simple material conveyor wagon 3 having to be observed. A material transfer from a simple material truck 3 to an extended material truck 3 is therefore also conceivable in principle - although not shown - by the transfer conveyor 5 of the simple material truck 3 gives up the material on the roof conveyor 6.60 of an extended material truck 1.2. If necessary, for example in order to obtain a desired separation of materials during loading, it can also be provided to arrange the extended material conveyor wagon of the first type 2 with a shortened roof conveyor device 60 and intermediate wagon conveyor device 7 in front of an extended material conveyor wagon 1 in order to transport material from the shortened roof conveyor device 60 via the intermediate wagon conveyor device 7 to promote on the roof conveyor 6 of the coupled extended material truck 1. In this way, different types of excavation can be specifically fed into different material conveyor vehicles of different types at a specific sequence location in the material conveyor vehicle association when loading.

The conveying devices can preferably be conveyor belts. However, as is clear from the example of the chute as a pivoting conveyor device, alternative conveyor devices that allow bulk materials to be conveyed in the directions shown (horizontally, inclined upwards and downwards) are also possible in principle.

REFERENCE LIST

1

extended head or intermediate material truck

2'

extended terminal material trolley

2

extended material conveyor wagon of the first type

3

simple material trolley

4

floor conveyor

5

Transfer conveyor associated with the floor conveyor

6

roof conveyor

60

shortened roof conveyor device of the terminal material conveyor wagon

61

Roof Conveyor Pivot End

62

mounting brace

7

Inter-car conveyor

7a

frame

7b

conveyor belt

70

Interroof Conveyor

71

supplementary funding institution

72

Inter-Cover Conveyor Pivot End

73

holding device

74

engagement element

75

swivel conveyor

76

additional conveyor

8th

loading conveyor

81

feeding device

82

Fastening device (swivel/telescope etc.)

10

material truck association

Claims (8)

1. A material conveying wagon assembly (10) of at least two material conveying wagons (1, 2, 3) functionally coupled to one another,

   wherein

   a first material conveying wagon of the material conveying wagon assembly (10) is a material conveying wagon (2), which has

   - a roof conveying means (60), which is shortened with respect to a wagon length and which leaves free a roof portion at one end of the first material conveying wagon (2) and which can be operated for loading in a first conveying direction towards the free end, and

   - a bottom conveying means (4), which can be operated for loading in a second direction, which is opposite to the first conveying direction, and

   - a transfer conveying means (5) assigned to the bottom conveying means (4) in the second conveying direction, and

   - an intermediate wagon conveying means (7), which can be operated for loading in the first conveying direction, for the functional coupling with a second material conveying wagon (1, 3),

   which is assigned to the shortened roof conveying means (60) of the material conveying wagon (2) and which extends from below an ejection end of the shortened roof conveying means (60) beyond the free end of the material conveying wagon (2), and wherein

   the material conveying wagon assembly (10) has at least one second material conveying wagon (1, 3) comprising at least one bottom conveying means (4) and at least one transfer conveying means (5) assigned to the bottom conveying means (4), wherein the

   second material conveying wagon (1, 3) is coupled to the first material conveying wagon (2) on its with regard to the shortened roof conveyor belt (60) free end, wherein

   the second material conveying wagon (1, 3) is a material conveying wagon (3) without roof conveying means, and the bottom conveying means (4) and the assigned transfer conveying means (5) have a conveying direction for loading, which is opposite to the second conveying direction of the bottom conveying means (4) of the first material conveying wagon (2), and wherein

   the ejection end of the intermediate wagon conveying means (7) of the first material conveying wagon (2) can be positioned above the bottom conveying means (4) of the coupled second material conveying wagon (3).
2. The material conveying wagon assembly (10) according to claim 1, characterised in that
   the intermediate wagon conveying means (7) is formed by

   - an intermediate roof conveying means (70) fixedly or detachably arranged at the first material conveying wagon (2) or

   - a combination of an intermediate roof conveying means (70) fixedly or detachably arranged at the first material conveying wagon (2) comprising a supplementary conveying means (71) fixedly or detachably arranged at the second material conveying wagon (3) or

   - a combination of a pivotable conveying means (75), which is articulated in the bottom area of the first material conveying wagon (2) and which can be moved between a use and a non-use position, and an auxiliary conveying means (76), which is arranged in a pivotable and/or displaceable manner at the first material conveying wagon (2) or removably at the first and/or the second material conveying wagon (3).
3. The material conveying wagon assembly (10) according to claim 2, characterised in that

   the intermediate roof conveying means (70) has a conveyor belt assembly (7b) in a carrier frame (7a), wherein

   the intermediate roof conveying means (70) as a whole or the conveyor belt assembly (7b) can preferably be displaced in the carrier frame (7a) from a use position, in which the conveyor belt assembly (7b) extends from below the ejection end of the shortened roof conveying means (60), to a non-use position, which is located under the shortened roof conveying means (60), or which is spaced apart in the longitudinal and/or transverse direction from the ejection point of the shortened roof conveying means (60).
4. The material conveying wagon assembly (10) according to claim 2 or 3, characterised in that
   the intermediate wagon conveying means (7), which can be moved between a use and a non-use position, has at least one drive and/or control elements for transferring the intermediate wagon conveying means (7) between the use and the non-use position, wherein the at least one drive and/or the control elements can be actuated manually or by means of at least one control device of the material conveying wagon assembly (10) in a semi-automatic or fully automatic manner, wherein the at least one control device is preferably coupled to at least one sensor for detecting a level of loading of one of the material conveying wagons (1, 2, 3).
5. The material conveying wagon assembly (10) according to at least any one of claims 2 to 4,

   characterised in that

   the intermediate roof conveying means (70) and optionally the supplementary conveying means (71) can be pivoted about a vertical axis and/or about a transverse wagon axis,

   wherein corresponding pivot drives and/or control elements are preferably provided, which can be actuated manually or by means of at least one control device of the material conveying wagon assembly (10) in a semi-automatic or fully automatic manner, wherein the at least one control device is preferably coupled with at least one sensor for detecting a track position and/or a track course.
6. The material conveying wagon assembly (10) according to at least any one of claims 2 to 5,
   characterised in that

   - the intermediate roof conveying means (70) detachably arranged at the first material conveying wagon (2),

   - the supplementary conveying means (71) detachably arranged at the second material conveying wagon (3),

   - the auxiliary conveying means (76) removably arranged at the first and/or the second material conveying wagon (2, 3)

   has engagement elements (74) for a lifting apparatus, wherein the first and/or the second material conveying wagon (2, 3) each preferably has receiving and/or positioning elements for the detachably arranged intermediate roof conveying means (70), the detachably arranged supplementary conveying means (71) and/or the removably arranged auxiliary conveying means (76).
7. The material conveying wagon assembly (10) according to at least any one of claims 2 to 6,

   characterised in that

   the material conveying wagon assembly (10) has at least one material conveying wagon (1) comprising a roof conveying means (6), which is continuous with respect to a wagon length and which can be operated for loading in the first conveying direction, comprising a bottom conveying means (4), which can be operated for loading in a second direction, which is opposite to the first conveying direction, and a transfer conveying means (5), which is assigned to the bottom conveying means (4) in the second conveying direction, wherein the material conveying wagon (1) comprising the continuous roof conveying means (6) is coupled to the end of the first material conveying wagon (2) facing away from the free end.
8. A method for loading a material conveying wagon assembly (10) comprising different material conveying wagons (1, 2, 3) according to at least any one of claims 1 to 7, wherein

   a first material conveying wagon (2) comprising the shortened roof conveying means (60) and comprising the intermediate wagon conveying means (7) is arranged in front of a second material conveying wagon (3) with respect to a first loading conveying direction, so that the intermediate wagon conveying means (7) is positioned in a use position above a bottom conveying means (4) of the coupled second material conveying wagon (3), wherein material, which is fed by the shortened roof conveying means (60), is conveyed via the intermediate wagon conveying means (7) onto the second material conveying wagon (3) and is further conveyed there in the first conveying direction, and wherein

   alternatively, before that or afterwards, material fed by the shortened roof conveying means (60) falls through the open free roof end onto the bottom conveying means (4) of the first material conveying wagon (2) by removing the intermediate wagon conveying means (7) or by transferring the intermediate wagon conveying means (7) into a non-use position, and is conveyed there in a second conveying direction, which is opposite to the first conveying direction.

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