EP4299403A1 - Wagon device for rail transport of goods on pallets - Google Patents

Abstract

The present invention relates to a wagon device for the rail transport (R) of goods (4) on pallets (5), said device comprising a wagon (1) designed essentially for lateral loading, respectively unloading. It is essentially characterized in that the floor (1c) of the wagon (1) comprises at least one movable floor part at one or at least two floor levels capable of being moved vertically, preferably in translation, so as to be able to modify its height position between a high position and a low position and vice versa and in that it comprises a lifting system making it possible to actuate and guide the height movement of the or each movable floor part from the high position to the low position and vice versa and holding means making it possible to hold the or each movable floor part in the high or low position to carry out the loading/unloading and/or storage of the goods.

Description

The present invention relates to the field of rail transport of goods, more particularly goods on pallets, and relates to a wagon device for the transport of goods on pallets by rail.

In the field of freight transport, a wagon includes a chassis supporting a floor and axles or bogies located at the ends of the chassis.

These wagons adapted for the transport of goods, such as bottles for example, more particularly on pallets, are generally flat wagons open on the sides (laterally), possibly covered with a retractable tarpaulin, equipped or not with drop sides or bars verticals placed on the side faces of the wagon to retain the goods. Covered flat wagons opening on the sides (side faces) by means of a sliding tarpaulin (“Rils” type wagons or similar) or sliding walls (“Habbins” type wagons or similar), are also suitable for the loading/unloading and transport of this type of goods, more particularly on pallets.

These flat wagons for the transport of goods on pallets are designed to allow lateral loading/unloading of goods on pallets, that is to say through the open lateral sides (or side faces) of the wagon. Loading or unloading operations are carried out using a forklift, also known as a “Fenwick” ^® , from or to the platform along which the wagon is stationary. The platform is in most cases at the same height as the floor of the wagon. Generally, these railway loading/unloading platforms are located at a height of approximately one meter, or even significantly greater than one meter above or in relation to the level of the rails.

Other wagons, with a floor lowered in the central part between the bogies, intended more particularly for the transport of heavy road vehicles are designed for longitudinal (or frontal) or vertical loading and unloading. These wagons are therefore not suitable for allowing, from a loading/unloading dock, the loading and lateral unloading of goods into the wagon and in particular of goods on pallets loaded by a forklift transversely to the wagon.

Flat wagons for the transport of goods on pallets designed to allow lateral loading/unloading have a large floor length, while having sufficient width to allow the loading of at least two pallets, called industrial pallets (of dimensions equal to approximately 1200 mm x 1000 mm), one next to the other, at their greatest length, over the width of the wagon.

However, the quantity of pallets (with their goods) that can be stored in these side-loading wagons is limited by the floor area. Indeed, if we take into account the maximum payload of a wagon (around sixty-five tonnes for four axles), the average weight (one tonne) per pallet, the maximum available floor surface and the size imposed by the regulations only allowing storage on a single height (a single level of pallets), it is only possible to load thirty-six pallets, or thirty-six tons. The wagon's loading capacity of sixty-five tonnes is then far from being used in full.

The present invention aims to overcome these drawbacks by proposing a wagon device for the transport by rail of goods on pallets making it possible to improve the loading capacity of goods on pallets of the wagon designed essentially for lateral loading/unloading.

For this purpose, the wagon device, according to the present invention, for the transport by rail of goods on pallets, said device comprising a wagon designed essentially for lateral loading, respectively unloading, by at least one of its lateral sides comprising at least one loading/unloading opening, said wagon comprising a chassis, axles and/or bogies at its ends and a floor extending along the longitudinal axis of the wagon, the chassis supporting or integrating, between the bogies or axles, a lowered, horizontal bottom of the wagon and two vertical sides surmounting said bottom, the or each loading/unloading opening extending respectively from and above the upper edge of one of the two sides, characterized in that the floor comprises at least one movable floor part at one or at least two levels (x ) of floor, the movable floor part(s) forming, between the axles or bogies, a part of the floor and each being able to be moved vertically, preferably in translation, so as to be able to modify its position in height between a high position and a low position and vice versa, in that it comprises a lifting system making it possible to actuate and guide the movement in height of the or each part of the movable floor from the high position to the low position and conversely and holding means making it possible to maintain the or each part of the movable floor in the high or low position to carry out the loading/unloading and/or storage of the goods on a pallet and in that the level of the upper edge of said sides corresponds substantially at the high position and the bottom level corresponds substantially to the low position.

• [Fig. 1] est une vue en coupe longitudinale ou axiale d'un wagon de marchandises sur palette à chargement latéral de l'art antérieur,
• [Fig. 1a] est une vue en coupe transversale du wagon représenté sur la figure 1 montrant dans le sens de la largeur deux rangées de marchandises sur palette stockées sur un seul niveau sur le plancher fixe du wagon,
• [Fig. 2] est une vue en coupe longitudinale ou axiale d'un dispositif de wagon à bogies selon la présente invention, avec une partie de plancher mobile à un niveau de plancher mise en position basse et s'étendant entre les bogies,
• [Fig. 2a] est une vue en coupe transversale partielle du dispositif de wagon représenté sur la figure 2 au niveau de la partie de plancher mobile,
• [Fig. 3a] est une vue en coupe transversale d'un dispositif de wagon selon la présente invention, lors d'une première phase du chargement de marchandises sur palette sur une partie de plancher mobile à un seul niveau de plancher, en position haute, à l'aide d'un chariot élévateur,
• [Fig. 3b] montre le dispositif de wagon représenté sur la figure 3a, dans une phase où un chariot élévateur transporte deux palettes de marchandises destinées à être empilées directement sur les marchandises sur palette stockées sur la partie de plancher mobile en position basse,
• [Fig. 3c] montre le dispositif de wagon représenté sur la figure 3b, dans la phase d'empilement des deux palettes de marchandises sur le premier niveau de marchandises sur palette à l'aide d'un chariot élévateur,
• [Fig. 4] est une vue en coupe transversale partielle d'un dispositif de wagon selon la présente invention, avec un système de levage dans un mode de réalisation comprenant une unité de levage embarquée dans le wagon,
• [Fig. 5] est une vue en perspective partielle d'un dispositif de wagon selon la présente invention comprenant des parties de plancher mobiles à deux niveaux de plancher formant chacune un caisson mobile, lesdits caissons mobiles formant chacun un tronçon du plancher,
• [Fig. 6] est une vue en coupe longitudinale du dispositif de wagon représenté sur la figure 5 et dans une version avec essieux à la place des bogies, en vue partielle sans les flancs du wagon 1, et à l'état chargé avec deux niveaux de marchandises sur palettes stockées dans et sur les caissons mobiles en position basse et un seul niveau de marchandises sur palette stockées sur les parties fixe du plancher s'étendant au-dessus des essieux,
• [Fig. 7] est une vue en perspective de dessous de l'un des caissons mobiles représenté sur la figure 6 et montrant quatre parties de maintien solidaires du plancher inférieur du caisson mobile, chacune à proximité de l'un de ses coins,
• [Fig. 8] est un ensemble de quatre vues en coupe transversale partielle de plancher inférieur du caisson représenté sur la figure 7, montrant les différentes phases de fonctionnement du dispositif de blocage en position haute du caisson. Ces quatre vues sont les suivantes :
• [Fig. 8a] est une vue montrant le plancher mobile 10c en position haute et avec les pièces de maintien mobiles en position sortie insérées dans les encoches de maintien,
• [Fig. 8b] est une vue montrant la partie de plancher mobile déplacée dans une position au-dessus de la position haute pour rentrer les pièces de maintien en les bloquant en position rentrée en vue de permettre la descente du caisson mobile vers la position basse,
• [Fig. 8c] est une vue montrant la partie de plancher mobile dans une position de niveau inférieure entre la position haute et la position basse lors de la descente du caisson mobile,
• [Fig. 8d] est une vue montrant la partie de plancher mobile en position basse du caisson mobile sur le fond et les verrous de blocage à l'état débloqué libérant les pièces de maintien,
• [Fig. 9] est un ensemble de trois vues en coupe transversale d'un dispositif de wagon selon la présente invention comprenant des caissons mobiles, dans les différentes phases de chargement dans l'un desdits caissons de palettes de marchandises, à l'aide d'un chariot élévateur. Ces trois vues sont les suivantes :
• [Fig. 9a] est une vue montrant les palettes de marchandises du niveau inférieur chargées par le chariot élévateur sur le plancher inférieur à l'intérieur du caisson,
• [Fig. 9b] est une vue montrant le caisson mobile en phase de déplacement en position basse grâce aux fourches d'un chariot élévateur formant le système de levage et soutenant le caisson mobile par le dessous du plancher supérieur dudit caisson mobile,
• [Fig. 9c] est une vue montrant le caisson mobile en phase de chargement d'autres palettes de marchandises chargées sur le plancher supérieur du caisson mobile,
• [Fig. 10] montre un mode de réalisation d'un caisson avec un plancher supérieur mobile verticalement, dans ses deux états possibles,
• [Fig. 10a] montre un état dans lequel le plancher supérieur mobile est en position haute lors de la phase de chargement des palettes sur le plancher inférieur du caisson ou lors de la phase de descente du caisson en position basse grâce aux fourches du chariot élévateur,
• [Fig. 10b] montre un autre état dans lequel le plancher supérieur mobile est en position basse sous l'effet du poids des palettes de marchandises chargées dessus,
• [Fig. 11] montre le dispositif d'arceaux mobiles longitudinalement supportant la bâche de couverture/fermeture du wagon (non représentée) qui existe actuellement sur les wagons de type Rils,
• [Fig. 12] montre un mode de réalisation du dispositif de wagon selon la présente invention réalisé sous forme d'une superstructure comprenant les planchers mobiles et/ou caisson ainsi que le dispositif de couverture et protection des marchandises, venant s'installer sur un châssis de wagon, plus particulièrement un wagon réalisé à partir d'un wagon de transport combiné du type wagon poche,
• [Fig. 13] montre un mode de réalisation particulier d'un wagon selon la présente invention, avec un dispositif de couverture et de protection comportant une bâche supportée par des arceaux coulissant et pouvant être réglé pour adapter à différents gabarits de chargement,
• [Fig. 13a] montre la partie supérieure de l'un des arceaux réglée en hauteur de sorte à permettre au wagon de circuler sur les lignes imposant le gabarit G1,
• [Fig. 13b] montre la partie supérieure de l'arceau représenté sur la figure 13a et réglée en hauteur de sorte à permettre au wagon de recevoir des marchandises sur palette de plus grande hauteur lorsque le wagon circule sur des lignes imposant le gabarit GB.

The invention will be better understood, thanks to the description below, which relates to a preferred embodiment, given by way of non-limiting example, and explained with reference to the appended schematic drawings, in which:

• [ Fig. 1 ] is a longitudinal or axial sectional view of a side-loading pallet freight wagon of the prior art,
• [ Fig. 1a ] is a cross-sectional view of the wagon shown on the figure 1 showing in the width direction two rows of palletized goods stored on a single level on the fixed floor of the wagon,
• [ Fig. 2 ] is a longitudinal or axial sectional view of a bogie wagon device according to the present invention, with a movable floor part at floor level placed in the low position and extending between the bogies,
• [ Fig. 2a ] is a partial cross-sectional view of the wagon device shown in the figure 2 at the level of the movable floor part,
• [ Fig. 3a ] is a cross-sectional view of a wagon device according to the present invention, during a first phase of loading goods on a pallet on a movable floor part at a single floor level, in the high position, at the using a forklift,
• [ Fig. 3b ] shows the wagon device shown on the figure 3a , in a phase where a forklift transports two pallets of goods intended to be stacked directly on the goods on pallets stored on the movable floor part in the low position,
• [ Fig. 3c ] shows the wagon device shown on the figure 3b , in the phase of stacking the two pallets of goods on the first level of goods on pallets using a forklift,
• [ Fig. 4 ] is a partial cross-sectional view of a wagon device according to the present invention, with a lifting system in one embodiment comprising a lifting unit on board the wagon,
• [ Fig. 5 ] is a partial perspective view of a wagon device according to the present invention comprising movable floor parts at two floor levels each forming a movable box, said movable boxes each forming a section of the floor,
• [ Fig. 6 ] is a longitudinal sectional view of the wagon device shown on the Figure 5 and in a version with axles instead of bogies, in partial view without the sides of wagon 1, and in the loaded state with two levels of goods on pallets stored in and on the mobile boxes in the low position and a single level of goods on pallets stored on the fixed parts of the floor extending above the axles,
• [ Fig. 7 ] is a perspective view from below of one of the mobile boxes shown on the Figure 6 and showing four holding parts secured to the lower floor of the mobile box, each near one of its corners,
• [ Fig. 8 ] is a set of four partial cross-sectional views of the lower floor of the box shown on the Figure 7 , showing the different phases of operation of the blocking device in the upper position of the box. These four views are:
• [ Fig. 8a ] is a view showing the movable floor 10c in the high position and with the movable retaining parts in the extended position inserted in the retaining notches,
• [ Fig. 8b ] is a view showing the movable floor part moved to a position above the high position to retract the retaining parts by blocking them in the retracted position in order to allow the descent of the movable box towards the low position,
• [ Fig. 8c ] is a view showing the movable floor part in a lower level position between the high position and the low position during the descent of the movable box,
• [ Fig. 8d ] is a view showing the movable floor part in the low position of the movable box on the bottom and the locking bolts in the unlocked state releasing the holding parts,
• [ Fig. 9 ] is a set of three cross-sectional views of a wagon device according to the present invention comprising mobile boxes, in the different phases of loading pallets of goods into one of said boxes, using a trolley elevator. These three views are:
• [ Fig. 9a ] is a view showing the pallets of goods from the lower level being loaded by the forklift onto the lower floor inside the box,
• [ Fig. 9b ] is a view showing the mobile box in the moving phase in the low position thanks to the forks of a forklift forming the lifting system and supporting the mobile box from below the upper floor of said mobile box,
• [ Fig. 9c ] is a view showing the mobile box in the loading phase of other pallets of goods loaded on the upper floor of the mobile box,
• [ Fig. 10 ] shows an embodiment of a box with a vertically movable upper floor, in its two possible states,
• [ Fig. 10a ] shows a state in which the movable upper floor is in the high position during the loading phase of the pallets on the lower floor of the box or during the lowering phase of the box in the low position using the forks of the forklift,
• [ Fig. 10b ] shows another state in which the movable upper floor is in the low position under the effect of the weight of the pallets of goods loaded on it,
• [ Fig. 11 ] shows the device of longitudinally movable hoops supporting the cover/closure of the wagon (not shown) which currently exists on Rils type wagons,
• [ Fig. 12 ] shows an embodiment of the wagon device according to the present invention produced in the form of a superstructure comprising the movable floors and/or box as well as the device for covering and protecting the goods, installed on a wagon chassis, more particularly a wagon made from a combined transport wagon of the pocket wagon type,
• [ Fig. 13 ] shows a particular embodiment of a wagon according to the present invention, with a covering and protection device comprising a tarpaulin supported by sliding arches and which can be adjusted to adapt to different loading sizes,
• [ Fig. 13a ] shows the upper part of one of the hoops adjusted in height so as to allow the wagon to travel on the lines imposing the G1 gauge,
• [ Fig. 13b ] shows the upper part of the hoop shown on the figure 13a and adjusted in height so as to allow the wagon to receive goods on pallets of greater height when the wagon travels on lines requiring the GB gauge.

THE figures 1 and 1a show a transverse loading/unloading goods wagon 1' of the prior art. Loading/unloading is carried out by at least one of its lateral sides comprising at least one loading/unloading opening 1'e. The wagon 1' comprises a chassis 1'a, axles and/or bogies 1'b at its ends and a flat loading floor 1'c extending along the longitudinal axis X of the wagon 1'. The wagon 1' is shown in the loaded state with two rows of goods 4 on pallets 5 (or in other words: pallets 5 of goods 4) stored on the floor 1'c of the wagon 1' and on a single storage level . Such a wagon 1' of the prior art can be of the "Rils" or "Habbins" type. This wagon 1 has a large floor length 1'c, while having sufficient width to allow, as can be seen in the figure 1a , the loading of two industrial pallets (for example of dimensions each: 1200 mm x 1000 mm) in their greatest length over the width of the wagon 1'. However, the G1 template imposed by the regulations leaves, as we can see in particular on the figure 1a , a reduced space G1 above the floor 1'c and goods 4 on pallet 5 which does not allow other goods 4 on pallet to be stacked on the goods 5 on pallet 4 already loaded in the wagon 1' by piling on these. The storage capacity of such a wagon 1' of the prior art is therefore limited and more particularly limited to the storage of a single level of goods 4, such as bottles, on pallet 5.

The other attached figures show a wagon device, according to the present invention, for the transport of goods by rail R, more particularly goods 4 on pallets 5, making it possible to remedy these drawbacks. For this purpose it comprises a wagon 1 (of goods) which is designed essentially for lateral loading, respectively unloading (of goods, more particularly of goods 4 on a pallet 5) by at least one of its lateral sides comprising at minus a 1st loading/unloading opening. The wagon 1 comprises a chassis 1a, axles and/or bogies 1b at its ends and a floor 1c extending along the longitudinal axis X of the wagon 1.

In accordance with the present invention, the floor 1c comprises at least one part 10c, 11c of movable floor at one or at least two floor level(s). The part(s) 10c, 11c of movable floor(s) form(s), between the axles or bogies 1b, a part of the floor 1c and are each capable of being moved vertically, preferably in translation, so as to be able to modify its height position between a high position P2 and a low position P1 and vice versa.

The part(s) 10c, 11c of movable floor(s) form(s) a part of the floor 1c, that is to say constitutes only part of it, as can be seen in particular on the figure 2 And 6 , and the other part of the floor 1c can be fixed (fixed floor part 1c) and extend for example above the axles or bogies 1b. The part(s) 10c, 11c of the movable floor(s), as can be seen in particular on the figure 2 And 6 , can thus extend substantially in the central part of the wagon 1 between the axles or bogies 1b.

The low position P1 of the part(s) 10c, 11c of the movable floor makes it possible to increase the loading capacity of the wagon 1, and therefore the storage capacity in the latter, by vertically increasing the storage space so as to be able to stack the goods 4 on pallets on at least two storage levels, unlike a wagon 1' of the prior art limited to a single storage level, while respecting the size constraints G imposed by the regulations in this field of transport of goods by rail R.

The chassis 1a supports or integrates, between the axles or bogies 1b, a lowered, horizontal bottom 10a of the wagon 1 and two vertical sides 1d surmounting said bottom 10a. In addition, the or each loading/unloading opening 1e extends from and above the upper edge 10d respectively of one of the two sides 1d. The level of the upper edge 10d of said sides 10a corresponds substantially to the high position P2 which itself corresponds substantially to or is defined by the standard level of a loading/unloading dock Q. The bottom level 10a corresponds to the low position P1. By bottom 10a is meant any contact surface, solid or perforated, located in the lower part of the wagon 1 and capable of supporting at least one part 10c, 11c of movable floor at one or at least two floor levels.

The bottom 10a can thus form a means for maintaining the lower position P1 of the part(s) 10c, 11c of the movable floor(s) which can come into abutment against said bottom 10a during their descent (see in particular the figures 5 , 6 , 7 , 8d , 9b, 9c , 10a, 10b ). As will be seen later, the bottom 10a can be used as a means of maintaining the low position P1, particularly when the lifting system is not on board, comprising a forklift 3a capable and intended to lift the part 10c, 11c of movable floor to put it in the high position P2 and rest it on the bottom 10a to put it in the low position P1. By comparison, the bottom 10a is located below the level of the fixed floor 1'c of the side-loading wagons 1' of the prior art. The bottom 10a, in another comparison, is located below the upper edge of the sides 1d of the wagon 1 extending longitudinally under the lateral openings 1e made in the lateral sides of the wagon 1.

Still in accordance with the present invention, the wagon device further comprises a lifting system 2, 3 making it possible to operate and guide the movement in height of the or each part 10c, 11c of the movable floor from the high position P2 to the low position P1 and vice versa and holding means 2a, 6, 30b, 10a making it possible to hold the or each part of the floor 10c, 11c movable in the high or low position P2, P1 to carry out the loading/unloading and/or storage of goods 4, more particularly goods 4 on pallet 5.

The present invention can provide that the lifting system 2, 3 can move the or each part 10c, 11c of floor above the high position P2 having a loading/unloading and/or storage function for another function, for example example, as will be seen later, to unlock locking bolts 6c of holding parts 6a.

Lateral loading or unloading in a wagon 1 of the device according to the present invention or in a wagon 1' of the prior art is carried out by the open lateral (or longitudinal) sides of the wagon 1', from a loading dock Q located above the ground ( figures 3a, 3b, 3c , 4 , 9a, 9b, 9c ) or, in a form not shown in the appended figures, from the ground (approximately at the level of the rails R or the running track of the wagon).

Preferably, the movable floor parts 10c, 11c, that is to say the movable floor parts 10c, 11c at one level or at least two floor levels, are independent of each other so as to be able to be each moved individually in height from the high position P2 to the low position P1 and vice versa.

In a particular embodiment of the or each mobile floor part 10c, 11c, it has a square or rectangular shape. Preferably, the or each part 10c, 11c of movable floor at a floor level has a flat or thin shape in order to further increase the storage space.

If we refer to the figures 5 , 6 , 7 , 9a, 9b, 9c , 10a, 10b , it can be seen that the or at least one of said part(s) 10c, 11c of movable floor(s) at two floor levels is divided into two sub-parts 10c, 11c of superimposed floor, preferably of flat shape and rectangular, namely a lower floor sub-part 10c, called (called) lower floor 10c, and a sub-part 11c upper floor, called (called) upper floor 11c, connected together by at least two lateral sides 12c so as to form a box 10c, 11c, 12c movable vertically between the high position P2 and the position bass P1. In addition, it can be seen that the or each box 10c, 11c, 12c is open on at least one of its two lateral sides 12c, preferably on its two lateral sides 12c, parallel to the longitudinal axis X of the wagon 1 so as to form at least one lateral opening for loading/unloading the box 10c, 11c, 12c. The open lateral side(s) 12c thus make it possible to carry out the lateral loading, respectively unloading, of the goods 4, more particularly of the goods 4 on a pallet 5, in (inside) said box 1 on the lower floor 10c. In addition, goods 4 on pallets 5 can be loaded (outside the box) on the upper floor 11c of the box 10c, 11c, 12c. In this particular embodiment, the high and low positions P2, P1 of the mobile box 10c, 11c, 12c are defined in relation to the lower floor 10c (see the broken lines in the figures concerned indicating the high positions P2 and low P1).

The upper floor 11c of the or at least one of the mobile box(es) 10c, 11c, 12c may be removable or vertically movable (see in particular the figures 10a, 10b ).

We understand that in the case of such mobile boxes 10c, 11c, 12c, the latter are independent of each other so that they can each be moved individually in height from the high position P2 to the low position P1 and vice versa.

The vertical sides 1d and the bottom 10a can then delimit a lifting space in which the part(s) 10c of movable floor(s) can move in height/vertically at one or at least two floor level(s). , where applicable the mobile box(es) 10c, 11c, 12c.

In a first embodiment of the lifting system 2, as can be seen in the Figure 4 , this comprises at least one lifting unit 2a on-board in the wagon 1. In addition, the or each on-board lifting unit 2a is configured to carry out the movement and guidance in height of the or one of the floor parts 10c, 11c mobile(s) from the high position P2 to the low position P2 and vice versa, with maintenance in said high position P2 or low position P1.

In this first embodiment of the lifting system 2, as can be seen in the Figure 4 , the or each on-board lifting unit 2a may comprise, on the one hand, at least one lifting device 20a with a deformable parallelogram ( Figure 4 ) or endless screw (shape not shown) connected to the chassis 1a and to the or one of the parts 10c, 11c of movable floor(s) and, on the other hand, at least one actuator 21a making it possible to actuate said lifting device 20a. We can see more particularly on the Figure 4 that the on-board lifting unit 2a can include two lifting devices 20a with deformable parallelogram (only one is visible on the Figure 4 ) located on each side of a movable floor part 10c, where applicable of the lower floor 10c of the mobile box 10c, 11c, 12c, and each articulated by at least one articulation 200a on the movable floor part 10c, where applicable on the lower floor 10c of the mobile box 10c, 11c, 12c, and by at least one articulation 201a on the bottom 10a of the chassis 1a or another part of the chassis 1a. The movable floor part 10c, where applicable the lower floor 10c of the movable box 10c, 11c, 12c, may include lights 100c receiving an axis 201a of one of the articulations 200a of the movable floor part 10c, if applicable of said lower floor 10c of the mobile box 10c, 11c, 12c. The lifting device 20a may comprise two lifting arms 202a, preferably connected by at least one connecting rod 205a, articulated on the one hand around the axis 203a of the or one of the joints 200a of the floor part 10c mobile, where appropriate of the lower floor 10c of the mobile box 10c, 11c, 12c, and on the other hand around the axis 204a of the or one of the articulations 201a of the bottom 10a.

Thus, in this exemplary embodiment the lifting devices 20a with deformable parallelogram make it possible to maintain the horizontality of the movable floor part 10c, where appropriate of the lower floor 10c of the movable box 10c, 11c, 12c. The actuator 21a can be a hydraulic, pneumatic or electric cylinder and can be fixed at one of its ends on the chassis 1a, for example on one of the internal sides of the chassis 1a and on the or one of the arms lifting 202a. The entry or exit of the cylinder 21a then causes the deformation of the parallelogram thus causing the part 10c of the movable floor to rise or fall, if necessary. the lower floor 10c of the mobile box 10c, 11c, 12c and therefore the mobile box 10c, 11c, 12c.

In the case of a lifting device 20a with a worm screw, this can comprise a plurality of worm screws, preferably four worm screws, connected to nuts secured to the part 10c of the movable floor, the where appropriate from the lower floor 10c of the mobile box 10c, 11c, 12c, preferably from the four corners of the latter or the latter. One or more electric or hydraulic motors can be provided to rotate the worm screws, thus causing said part 10c of the movable floor to rise or fall, where appropriate the lower floor 10c of the mobile box 10c, 11c, 12c.

In another embodiment of the lifting system 3, in particular in the case where the or each floor part 10c, 11c is a floor part 10c, 11c with two floor levels forming a mobile box 10c, 11c, 12c, the lifting system 3 may comprise at least one forklift 3a provided with a fork 30a and guide means 3b making it possible to guide the movement in height of the or each mobile box 10c, 11c, 12c. The or each mobile box 10c, 11c, 12c can be configured so as to be able to receive the fork 30a of the forklift(s) 3a under and against the upper floor 11c so as to be able to lift the movable box 10c, 11c, 12c to move it from the low position P1 to the high position P2 when the fork 30a is raised, bearing against the upper floor 11c. This embodiment of the lifting system 3 makes it possible to avoid the installation of an on-board lifting system, for example a lifting system 2 comprising the on-board lifting unit(s) 2a. Therefore no energy is required on board wagon 1.

In this embodiment of the lifting system 3 with forklift, the guiding means 3b can consist of at least two transverse partitions 3b fixed in the wagon 1 perpendicular to the longitudinal axis X and the or each box 10c, 11c, 12c mobile can be arranged between the two or two transverse partitions 3b so as to be able to be guided in translation between said transverse partitions 3b during its movement in height. On the Figure 5 , it can be seen that slides 7 ensure vertical guidance in translation of the mobile box(es) 10c, 11c, 12c during their rise or descent and guarantee their longitudinal blocking. The slides 7 also prevent the mobile boxes 10c, 11c, 12c from moving transversely. Each slide 7 may comprise a rectilinear guide 7a fixed vertically on the external face of one of the transverse sides of the boxes 10c, 11c, 12c movable parallel to the partitions 3b and a groove 7b complementary to said guide 7a made vertically in the internal face of the adjacent partition 3a. Each guide 7a can then slide vertically by sliding in the complementary groove 7b of the corresponding slide 7.

If we refer to the figures 8a, 8b, 8c, 8d it can be seen that such partitions 3b can include holding notches (or openings) 30b and that the holding means 6, 30b can comprise said notches 30b and holding parts 6 secured to the lower floor 10c. Each holding part 6 may comprise at least one movable holding part 6a, preferably under the effect of a spring 6b, between a retracted position under or in the lower floor 10c, and an extended position in which the part 6a of holding is able to engage, in the high position P2, in one of the holding notches 30b to maintain the lower floor 10c, and therefore the mobile box 10c, 11c, 12c, in said high position P2.

The holding parts 6 can be fixed on the underside of the lower floor 10c, preferably at the four corners or near the four corners of the latter (see in particular the Figure 7 ). The mobile holding part 6a may have a shape similar to that of a door closing bolt. The movement of the holding part 6a from the retracted position to the extended position is carried out under the effect of a spring 6b when the mobile box 10c, 11c, 12c is lifted and placed in the high position P2 ( figures 9a ) by means of the forklift 3a. In the high position P2, the movable holding parts 6a are opposite the notches 30b and are inserted into the latter in the extended position under the thrust of the springs 6b, which has the effect of maintaining the box 10c, 11c, 12c mobile in the high position P2.

Thus the lower floor 10c of the mobile box 10c, 11c, 12c concerned is held in the high position P2 by the holding pieces 6a inserted in the holding notches 30b. Maintaining the mobile box 10c, 11c, 12c in the high position P2 allows the forklift 3a to be released so that it can carry out the loading/unloading of the internal space of the mobile box 10c, 11c, 12c ( figures 8a , 9a ).

Preferably, as can be seen in the figure 8b , the retraction of the holding parts 6a can be carried out manually by moving each holding part 6a into the retracted position. However, so that there is no manual operation to be carried out to unlock the holding parts 6a in order to be able to lower the mobile box 10c, 11c, 12c with the forklift 3a, the present invention can provide that each part 6 retaining part further comprises a lock 6c making it possible to block the associated holding part 6a in the retracted position. The re-entry of each holding part 6a and its blocking by the lock 6c can then be carried out by moving, thanks to the forklift 3a, the mobile box 10c, 11c, 12c upwards above the high position P2, towards a upper high position P3, that is to say of a level higher than that of the high position P2 (reference), which has the effect of putting an inclined side into sliding contact with the upper edge of the notches 30b for holding an inclined side 60a practiced in each holding part 6a and causing the movement of the holding parts 6a towards their retracted position against the pushing force of the springs 6b by blocking them in the retracted position thanks to the locking bolts 6c. The upper high position P3 can be considered as an intermediate or transitional position during the movement in height of the movable floor part 10c, 11c between the high position P2 and the low position P1.

So when the forklift 3a then lowers the mobile box 10c, 11c, 12c towards its low position P1, the holding parts 6a will remain blocked in the retracted position and will not be inserted again into the holding openings 30b when lowering the mobile box 10c, 11c, 12c ( figure 8c ). Once the movable box 10c, 11c, 12c is completely lowered, that is to say when it reaches its low position P1, each lock 6c will come into contact with the bottom 10a of the wagon 1, which has the effect of lift said lock 6c. This movement releases the holding part 6a which will again be urged towards its extended position under the effect of the thrust of the compression spring 6b ( figure 8d ). In this way, when the mobile box 10c, 11c, 12c is moved to its high position P2, the locking part 6a will be inserted into the receiving opening 30b when it is facing the latter and will come block the mobile box 10c, 11c, 12c, more particularly the lower floor 10c, in the high position P2 ( figure 8a ).

We understand that the position P3 can then be located above or slightly above the upper edge 10d of the sides 1d of the wagon 1.

The transverse partitions 3b may present above the reception openings 30b an internal extra thickness 31b which will force the holding parts 6a to retract as much as possible to be perfectly blocked by the locking bolts 6c during the descent of the box 10c, 11c, 12c and not come to block again in the holding notches 30b.

Preferably, each locking bolt 6c may consist of a tilting element 6c around a tilting axis 62c, preferably horizontal and perpendicular to the longitudinal axis of the wagon 1 ( figures 8a, 8b, 8c, 8d ). The rocking element 6c may have an L shape and can be pivotally mounted in a vertical plane by one of its ends around the tilting axis 62c. Each holding part 6a may include a blocking projection 61a and the rocker element 6c may include a blocking projection 60c cooperating with the blocking projection 61a of the locking part 6a to block the latter in the retracted position during movement of the box 10c, 11c, 12c movable above the high position P2. Each rocking element 6c may further comprise an unlocking projection 61c which can be formed by one of the ends of the L opposite to that articulated around the tilting axis 62c. Once the movable box 10c, 11c, 12c has completely lowered, that is to say when it reaches its low position P1, the unlocking projection 61c of the rocker element 6c will come into contact with the bottom 10a of the wagon 1 and lift said rocking element 6c (or pivot it upwards), which will have the effect of releasing the associated holding part 6a as seen previously.

• soit empilées directement sur les marchandises 4 sur palette 5 stockées sur la partie ou l'une des partie(s) de plancher 10c mobile(s) à un niveau de plancher (figures 2 et 3c), si les marchandises/produits 4 sur palette 5 le permettent et supportent la charge,
• soit chargées sur le plancher 11c supérieur d'un caisson 10c, 11c, 12c (figures 6, 9c, 10b).

We understand that, depending on the nature of the goods 4 on pallet 5, the goods 4 on pallet can be:

• either stacked directly on the goods 4 on pallet 5 stored on the part or one of the part(s) of floor 10c movable(s) at a floor level ( figures 2 And 3c ), if the goods/products 4 on pallet 5 allow it and support the load,
• either loaded on the upper floor 11c of a box 10c, 11c, 12c ( figures 6 , 9c , 10b ).

In order to offer the maximum storage height available in the wagon 1 (in particular above its bottom 10a), the or each part 10c of movable floor at a floor level, where appropriate the lower floor 10c, 11c or upper part of a mobile box 10c, 11c, 12c, is intended to be preferably the thinnest/thinest possible. For this purpose, the length of the movable part of the floor 1c (comprising the movable floor part(s) 10c, 11c at one or at least two floor level(s)) is preferably divided into several independent sections as seen previously (see for example the figures 5 And 6 ).

In such a wagon 1 according to the wagon device according to the present invention, with one or more floor parts 10c at a single floor level, the process of loading the goods 4 onto pallets 5 can take place/sequence in the following way:

THE figures 3a, 3b, 3c present the phases of loading goods 4 on pallets 5 on a mobile floor part 10c. To load the goods 4 on pallet 5 on the movable floor part 10c using a forklift 3a for example, it is placed in the high position P2, that is to say at the same level as the loading dock Q ( figure 3a ). The loading dock Q is also at the same level as the upper edges 10d of the sides 1d of the wagon 1. After having been loaded with a first level of goods 4 on pallets 5, the part 10c of the movable floor is then lowered by means of the system lifting device 2 embarked in the wagon ( figures 3b and 3c ) in order to receive a second level of goods 4 on pallet 5 by stacking on the first level ( figure 3c ). Each level of the stack can include two or four pallets 5 of goods 4. In this case the forklift 3a is adapted to transport two or four pallets 5 of goods 4 at a time.

• dans une première phase (non illustrée), le caisson 10c, 11c, 12c est en position haute P2 pour pouvoir charger les marchandises 4 sur palette 5 à l'intérieur du caisson 10c, 11c, 12c sur le plancher 10c inférieur. Comme il n'y a aucune charge sur le plancher 11c supérieur, les ressorts 14 maintiennent celui-ci en position haute. Ainsi le jeu entre le dessus des palettes et le dessous du plancher 11c supérieur permet au chariot élévateur de faire rentrer les palettes dans le caisson 10c, 11c, 12c avant de les poser sur le plancher 10c inférieur.
• dans une deuxième phase (figure 10a), le caisson 10c, 11c, 12c, chargé des marchandises 4 sur palette 5 sur le plancher 10c inférieur a été descendu dans la position basse P1 grâce à un chariot élévateur. Le jeu (ou espace vide) en hauteur subsistant entre le dessus des marchandises 4 et le dessous du plancher 11c supérieur permet le passage et la mise en place des fourches du chariot élévateur pour soulever puis faire descendre le caisson 10c, 11c, 12c de la position haute P2 à la position basse P1,
• dans une troisième phase (figure 10b), le caisson 10c, 11c, 12c est toujours en position basse P1 et les marchandises 4 sur palettes du niveau supérieur sont chargées sur le plancher 11c supérieur. Le poids des marchandises 4 sur palette 5 entraîne alors la compression des ressorts et l'abaissement du plancher 11c supérieur en position basse. Le jeu fonctionnel entre le dessus des palettes du niveau inférieur et le dessous du plancher 11c supérieur est ainsi considérablement réduit.

As the pallets can often have a significant height, to successfully load these pallets one above the other on two levels while remaining within the limits imposed by the railway gauge, it is necessary to waste as little space as possible in height. For this, as we can see in the Figure 10 (grouping together the figures 10a and 10b ), the present invention can provide an embodiment of the boxes 10c, 11c, 12c in which the upper floor 11c of the or at least one of the box(es) 10c, 11c, 12c is movable vertically relative to the floor 10c lower, preferably in vertical translation. Such an upper floor 11c is movable vertically between a low position and a high position and is maintained and returned to the high position by means of a return means such as one or more spring(s) 14. Preferably, the return means may include two springs 14 arranged vertically on each side of the box 10c, 11c, 12c. Such a vertically movable upper floor 11c can then have a vertical degree of freedom and be mounted so as to be able to slide in height, preferably a few centimeters, relative to the lower floor 10c. Such a vertically movable upper floor 11c and the box 10c, 11c, 12c can then be adapted to form two lateral slides 16 each comprising a spring 14. Each slide 16 can be formed by a slide part integrated or fixed in the box 10c, 11c, 12c, in particular in one of the lateral sides 12c of the box 10c, 11c, 12c, preferably on the external side, respectively in the upper floor 11c, in particular in one of the lateral sides of the upper floor 11c. The sliding part of the upper floor 11c can extend vertically downwards, that is to say perpendicular to the load plane of the upper floor 11c and under the latter. The or each spring 14 can be dimensioned, as can be seen in the figure 10a , so as to maintain the upper floor 11c in the high position only under its own weight, the latter lowering, as can be seen in the figure 10b , in the low position when one or more goods 4 are loaded on pallets 5. The figures 10a and 10b show the operating principle of such a vertically movable upper floor 11c aimed at reducing the clearances and spaces lost in height to offer the greatest possible pallet height. It is understood that the or each spring 14 can be any mechanical device designed to store energy when it is deformed, under the effect of the weight of the load (goods 4 on pallet 5) on the upper floor 11c, and in return the same amount when released, when the load is removed. More particularly, according to this operating principle:

• in a first phase (not illustrated), the box 10c, 11c, 12c is in the high position P2 to be able to load the goods 4 on pallet 5 inside the box 10c, 11c, 12c on the lower floor 10c. As there is no load on the upper floor 11c, the springs 14 maintain it in the high position. Thus the clearance between the top of the pallets and the underside of the upper floor 11c allows the forklift to bring the pallets into the box 10c, 11c, 12c before placing them on the lower floor 10c.
• in a second phase ( figure 10a ), the box 10c, 11c, 12c, loaded with goods 4 on pallet 5 on the lower floor 10c was lowered into the low position P1 using a forklift. The clearance (or empty space) in height remaining between the top of the goods 4 and the underside of the upper floor 11c allows the passage and installation of the forks of the forklift to lift then lower the box 10c, 11c, 12c from the high position P2 to low position P1,
• in a third phase ( figure 10b ), the box 10c, 11c, 12c is still in the low position P1 and the goods 4 on pallets from the upper level are loaded on the upper floor 11c. The weight of the goods 4 on pallet 5 then causes the compression of the springs and the lowering of the upper floor 11c to the low position. The functional clearance between the top of the lower level pallets and the underside of the upper floor 11c is thus considerably reduced.

Furthermore, in a known manner, the closing of the loading/unloading openings 1e and the protection of the goods 4 is carried out in the same manner as with known wagons 1', in particular as Rils type wagons or similar (flat wagons with sliding tarpaulins) or of the Habbins type or similar (covered wagons with sliding walls).

The maximum height of goods 4 on pallets 5 which can be loaded one above the other on two levels is limited by the railway gauge. The covering and protection devices for goods 4 of wagons 1 of the Rils or Habbins type usually respect the minimum standard railway gauge G1 in order to be able to circulate on all the railway tracks of the European network. However, a large number of railway lines in Europe offer a loading template larger than the G1 template such as, for example, the GB template, as shown in figure 13 (grouping together the figures 13a and 13b ).

Because of this limit of the G1 gauge, the goods 4 on pallets 5 having a very great height cannot be loaded one above the other on two levels on the wagon 1 which is the subject of the present invention. To resolve this difficulty, a variant of the invention consists of equipping the wagons with a device for covering and protecting the goods 4 on the wagon which can be adapted to the size offered by the lines on which the wagon travels.

The present invention can then provide, in a particular embodiment of the wagon 1, that it is a covered wagon 1 comprising a covering and protection device comprising a cover B1, such as a tarpaulin for example, for protection goods 4 on pallet 5. In addition, the cover and protection device can be configured so as to be able to modify the height of the cover B1 relative to the floor 1c of the wagon 1 in order to adapt to the railway gauge, for example GB, G1, G2, lines on which wagon 1 runs ( figures 13a, 13b ).

The cover B1 can be sliding, for example by being supported by hoops 17 sliding along the wagon 1 ( Figure 11 ). The covering and protection device may include, for guiding and sliding of the hoops 17, two lateral slides 18 parallel to the longitudinal axis of the wagon 1. Each slide 18 may include supports 180, for example U-shaped, sliding and each secured to a lower end of a hoop 17 and two lateral guide rails 181, for example T-shaped, mounted on each side of the wagon 1 at the level of the lower ends of the hoops 17 and cooperating by sliding or rolling with 180 supports.

Each arch 17 can be configured so as to be able to be adjusted in height, that is to say so as to be able to vary its height/vertical extension, depending on the size of the line taken. As can be seen on the figures 13a, 13b , each arch 17 can be made up of tubes 170, 171 and can comprise two parts, namely a lower part made up of two vertical tubes 170 whose lower end is fixed on a sliding support 180 on one of the side rails 181 of the wagon 1 and an upper part consisting of a tube 171, called the upper tube, folded in the shape of a U or inverted arc, each vertical branch of which slides vertically in one of the two tubes 170 verticals. These tubes 170, 171 can be pierced with holes 172 at different heights to be able to adapt the height of the hoops 17 according to each type of template and an axis or a pin 19 can be provided to be inserted in the corresponding holes 172 in order to block the upper tube 171 at a given height to be compatible with the chosen template.

THE figures 13a, 13b show examples of height adjustments of the upper part of a roll bar depending on the template used. On the figure 13a , the upper part of the arch 17 is adjusted to the lowest position to respect the minimum size G1 (for example when returning to the workshop). On the figure 13b , the upper part of the arch is adjusted in height so as to respect the GB template (for example for traveling on the main lines. Other templates, for example the G2 template (not illustrated), can hereby be considered invention and the upper part of each arch 17 can be provided to be able to be adjusted in height so as to respect this template G2, for example to travel on the lines of the German or Austrian networks.

In order to adapt to the variation in height of the arches, as can be seen on the figures 13a, 13b , the covering tarpaulin B is installed with a double fold B1, which can be held by a strap, on each of the lateral sides. This makes it possible to vary the total lateral length of tarpaulin B as a function of the height of the upper part of each arch 17 (in particular for French or Spanish networks).

This principle of height adjustment of the device for covering and protecting goods on wagon 1 can also be applied in the case of an embodiment with rigid sliding side walls. In this case the height of the side walls corresponds to the highest position of the cover. For the lower positions of the cover, the lower parts of the side walls of wagon 1 then descend a little lower than the loading level.

Such a wagon device according to the present invention thus makes it possible, in particular between (central part of the wagon 1) the two bogies or axles 1b of the wagon 1 thanks to the floor part(s) 10c, 11c movable(s) in the low position (floor lowered) to obtain a storage height allowing the loading of at least two levels of goods 4 on pallets instead of a single level on the fixed floor 1'c of a wagon 1' of the prior art. Thus, on a wagon 1 according to the present invention of the same length as a conventional wagon 1', in particular of the Rils type or the Habbins type, makes it possible to load fifty-six pallets of 1200 x 1000 instead of thirty-six, i.e. a capacity 55% higher carryover. With a load mass of fifty-six tons (56 x 1 ton/pallet), the wagon's carrying capacity of sixty-five tons is better utilized.

In order to avoid completely redesigning a new wagon 1, the present invention can provide an embodiment of the wagon device according to the present invention in which the wagon 1 is made from a combined transport wagon of the pocket wagon type and comprises a superstructure (or an assembly) S comprising the part(s) of movable floor/boxes 10c; 10c, 11c as well as, in the case where wagon 1 includes the covering and protection device, the covering and protection device for the goods. The superstructure S is configured to be able to be installed/mounted/secured in a removable manner on the chassis 1a of the wagon 1 ( Figure 12 ). Such a superstructure S can be adapted to be secured on the chassis of a conventional combined transport wagon, for example a wagon known as a pocket wagon, by carrying out the securing, for example, using ISO pins known for used for securing containers on wagons.

Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications remain possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims (14)

Wagon device for the transport by rail (R) of goods (4) on pallets (5), said device comprising a wagon (1) designed essentially for lateral loading, respectively unloading, via at least one of its sides laterals comprising at least one opening (1e) for loading/unloading, said wagon (1) comprising a chassis (1a), axles and/or bogies (1b) at its ends and a floor (1c) extending along the longitudinal axis (X) of the wagon (1), the chassis (1a) supporting or integrating, between the bogies or axles (1b), a lowered, horizontal bottom (10a) of the wagon (1) and two sides (1d ) verticals surmounting said bottom (10a), the or each loading/unloading opening (1e) extending respectively from and above the upper edge (10d) of one of the two sides (1d), characterized in that the floor (1c) comprises at least one part (10c; 10c, 11c) of movable floor at one or at least two floor level(s), the floor part(s) (10c; 10c, 11c) movable(s) forming, between the axles or bogies (1b), a part of the floor (1c) and each being able to be moved vertically, preferably in translation, so as to be able to modify its position in height between a high position (P2) and a low position (P1) and vice versa, in that it comprises a lifting system (2; 3) making it possible to activate and guide the movement in height of the or each part of the floor ( 10c; 10c, 11c) movable from the high position (P2) to the low position (P1) and vice versa and holding means (2a, 6, 30b, 10a) making it possible to hold the or each part of the floor (10c ; 10c, 11c) movable in the high or low position (P2, P1) to carry out loading/unloading and/or storage of goods (4) on pallet (5) and in that the level of the upper edge (10d) of said sides (10a) corresponds substantially to the high position (P2) and the bottom level (10a) corresponds substantially to the low position (P1). Wagon device according to claim 1, characterized in that the movable floor parts (10c; 10c, 11c) are independent of each other so that they can each be moved individually in height from the high position (P2) up to to the low position (P1) and vice versa. Wagon device, according to claim 1 or 2, characterized in that a length portion of the floor (1c) forms a section and in that the movable floor parts (10c; 10c, 11c) each form such a section or part of such a section. Wagon device according to any one of Claims 1 to 3, characterized in that at least two movable floor parts (10c; 10c, 11c) are arranged next to each other or against each other. the other in the direction of the width or length of the wagon (1). Wagon device according to any one of claims 1 to 4, characterized in that the or at least one of the movable floor part(s) (10c, 11c) at two floor levels is divided into two superimposed floor sub-parts (10c, 11c) each forming one of the two floor levels, namely a lower floor sub-part (10c), called the lower floor (10c), and a floor sub-part (11c) upper, called upper floor (11c), connected together by at least two lateral sides (12c) so as to form a mobile box (10c, 11c, 12c) capable of being moved vertically between the high position (P2) and the position low (P1), the or each box (10c, 11c, 12c) being open on at least one of its two lateral sides, preferably on its two lateral sides (13c), parallel to the longitudinal axis (X) of the wagon (1), so as to form at least one side opening for loading/unloading the box (10c, 11c, 12c). Wagon device, according to claim 5, characterized in that the upper floor (11c) of the or at least one of the movable box(es) (10c, 11c, 12c) is removable or movable vertically, preferably in vertical translation, relative to the lower floor (10c). Wagon device according to claim 6, characterized in that the upper floor (11c) is movable vertically between a low position and a high position and is maintained and returned to the high position by means of return means such as one or several spring(s) (14). Wagon device according to any one of claims 1 to 7, characterized in that the lifting system (2) comprises at least one lifting unit (2a) on board the wagon (1), the or each lifting unit (2a) on-board being configured to carry out the movement and guiding in height of the or one of the movable floor parts (10c; 10c, 11c) from the high position (P2) to the low position (P1) and vice versa, with maintenance in said position high or low (P2, P1). Wagon device according to claim 8, characterized in that the or each on-board lifting unit (2a) comprises, on the one hand, at least one lifting device (20a) with a deformable parallelogram or worm screw connected to the chassis (1a) and to the or one of the movable floor parts (10c; 11c) and, on the other hand, at least one actuator (21a) making it possible to actuate said lifting device (20a). Wagon device according to any one of claims 1 to 9 each taken in combination with claim 5 or 6, characterized in that the lifting system (3) comprises at least one forklift (3a) provided with a fork (30a) and guide means (3b) making it possible to guide the movement in height of the or each mobile box (10c, 11c, 12c) and in that the or each mobile box (10c, 11c, 12c) is configured to so as to be able to receive the fork (30a) of the or one of the forklift(s) (3a) under the upper floor (11c) so as to be able to lift the mobile box (10c, 11c, 12c) for move it from the low position (P1) to the high position (P2) when raising the fork (30a) bearing under and against the upper floor (11c) of said box (10c, 11c, 12c). Wagon device according to claim 10, characterized in that the guide means (3b) consist of at least two transverse partitions (3b) fixed in the wagon (1) perpendicular to the longitudinal axis (X) and in that the or each movable box (10c, 11c, 12c) is arranged between the two or two transverse partitions (3b) so as to be guided in translation between said transverse partitions (3b) during its movement in height. Wagon device, according to claim 11, characterized in that the partitions (3b) comprise receiving notches (30b) and in that the holding means (6, 30b) comprise said receiving notches (30b) and parts (6) for holding the lower floor (10c) of the box (10c, 11c, 12c) concerned, the or each holding part (6) comprising at least one movable holding part (6a), preferably under the effect of a spring (6b), between a retracted position under or in the lower floor (10c) and an extended position in which the part (6a) retaining is able to engage, in the high position (P2), in one of the retaining notches (30b) to maintain the lower floor (10c), and therefore the mobile box (10c, 11c, 12c), in said high position (P2). Wagon device, according to any one of claims 1 to 12, characterized in that the wagon (1) is a covered wagon (1) comprising a covering and protection device comprising a cover (B1), such as a tarpaulin for example, for the protection of goods (4) on a pallet (5) and in that the covering and protection device is configured so as to be able to modify the height of the covering (B1) relative to the floor (1c) of the wagon (1) in order to adapt to the railway gauge (GB, G1, G2) of the lines on which the wagon (1) travels. Wagon device, according to any one of claims 1 to 13, characterized in that the wagon (1) is made from a combined transport wagon of the pocket wagon type and comprises a superstructure (S) comprising the one or more part(s) of movable floor/boxes (10c; 10c, 11c), and where applicable the covering and protection device, and in that the superstructure (S) is configured to be able to be mounted in a removable manner on the chassis (1a) of the wagon (1).

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