FR3120064A1 - HANDLING TRUCK WITH DRIVER GUIDE - Google Patents

Abstract

TITLE OF THE INVENTION: HANDLING TROLLEY WITH ITS DRIVER'S GUIDE MEANS The trolley (20) for handling at least one package (37) comprises:- a means of accessing a memory of positions of articles in a storage space where the carriage moves, - a means for determining the position of the carriage in this storage space and - a means (32) for guiding the driver of the carriage towards an article to be placed in a package. Figure for abstract: Figure 3

Description

HANDLING TRUCK WITH DRIVER GUIDE

Technical field of the invention

The present invention relates to an industrial truck with guide means for its driver and an unloading station for such a truck. It applies, in particular, to the preparation of orders in storage spaces.

State of the art

The storage spaces, or stores, have shelves carrying articles according to numerous references. Whether for mail order or for supplying a network of distributors or resellers, it is necessary to quickly process an order, i.e. to assemble the different items ordered in the same packaging or group of packaging for their transport.

Fully automated or robotized stores are known. These stores are expensive to manufacture and maintain and can only be profitable for very high item throughputs.

Stores are known in which handlers move trolleys provided with shelves supporting packaging corresponding to recipients, packaging where the handler successively places the items ordered by this recipient. Then the handler takes the trolley to an area for closing, storing and shipping the packaging or its contents.

The time taken to process an order in these stores is too long and affects the profitability of the store.

Presentation of the invention

The present invention aims to remedy all or part of these drawbacks.

To this end, the present invention relates to a trolley for handling at least one package, which comprises:
- a means of access to a memory of article positions in a storage space where the carriage moves,
- a means for determining the position of the carriage in this storage space and
- A means of guiding the driver of the carriage towards an article to be placed in a package.

Thanks to these provisions, the driver of the truck can more quickly and with less fatigue reach each item to be placed in a package.

In embodiments, the means for accessing an item position memory includes means for accessing a storage space management system.

In some embodiments, the means for determining the position of the carriage comprises at least one camera and a means for processing images provided by at least one said camera.

Thanks to these provisions, the position determination is not subject to electromagnetic wave interference.

In embodiments, the truck includes a display screen above a drawbar, the screen being configured to display the image provided by a camera.

Thanks to these provisions, a handler can drive the truck while having a view of what is on the path of the truck and thus avoiding the risk of collision with objects or people.

In embodiments, the means for guiding the driver of the carriage comprises:
- when the cart is static, the display on the screen of a representation of a path to be followed by the cart and/or the next location where at least one item must be picked and,
- When the carriage is mobile, the display on the screen of at least the image provided by the camera.

Thanks to these provisions, before starting the truck, a handler can identify the location where he is going to pick up the next item to be placed in a packaging carried by the truck.

In some embodiments, the means for determining the position of the carriage comprises means for receiving radio signals and means for positioning according to phase shifts between the radio signals received.

Thanks to these provisions, the positioning of the carriage is precise and cannot be disturbed by traces left on the ground on visible location marks.

In some embodiments, the means for guiding the driver of the carriage comprises at least two light sources positioned on either side of the carriage, one of these light sources emitting a predetermined light signal to represent the side on which the packaging in which the next item is to be placed.

Thanks to these provisions, the handler who drives the trolley immediately sees the direction he must take once an item has been taken from the storage space, without having to find out which side of the trolley is the packaging where to place this article.

In some embodiments, the trolley includes means of access to a computer configured to determine the shortest path, in length and/or in duration, for all the articles to be placed in each package carried by the trolley.

Thanks to these provisions, the energy or time cost of filling each package is minimized. Note that the computer can be integrated into the truck or remote, for example in the storage space management system.

In embodiments, the computer is configured to take into account the path of several carriages to determine the path of at least one of these carriages.

Thanks to these provisions, the computer can avoid waiting times in an aisle where articles must be taken to be placed on packaging supported by different trolleys.

In some embodiments, the computer is configured to assign to the packages of a cart nearby items in the storage space.

Thanks to these provisions, all of the paths traveled by different carriages are reduced, or even optimized.

Brief description of figures

Other advantages, aims and particular characteristics of the invention will emerge from the non-limiting description which follows of at least one particular embodiment of the handling trolley and of the trolley unloading station which are the subject of the present invention, with regard to accompanying drawings, in which:

represents, in perspective, a particular embodiment of the trolley which is the subject of the invention,

represents, in side view, the trolley illustrated in ,

shows, in rear view, the carriage illustrated in Figures 1 and 2,

represents, in perspective, a packaging location of the trolley illustrated in Figures 1 to 3,

represents, in the form of a flowchart, the steps of a method for loading a trolley illustrated in Figures 1 to 4,

represents, in rear view, a trolley unloading station,

represents, in perspective, the station illustrated in , whose upper horizontal removable external partitions have been removed,

shows, in top view, the station illustrated in Figures 6 and 7, from which the upper horizontal removable external partitions have been removed,

shows, in top view, the station illustrated in Figures 6 to 8, provided with its upper horizontal removable external partitions,

shows, in top view, the station illustrated in Figures 6 to 9, whose upper horizontal removable external partitions have been removed, during the arrival of a trolley,

shows, in top view, the station illustrated in Figures 6 to 10, whose upper horizontal removable external partitions have been removed, once the trolley is in the unloading position,

represents, in partial rear view, a first stage of unloading a trolley,

represents, in partial rear view, a second stage of unloading a trolley,

represents, in partial rear view, a third stage of unloading a trolley,

represents, in partial rear view, a fourth stage of unloading a trolley,

represents, in partial rear view, a fifth stage of unloading a trolley and

represents, in the form of a flowchart, the steps of a method for unloading a trolley illustrated in FIGS. 1 to 4 by a station illustrated in FIGS. 6 to 16.

This description is given on a non-limiting basis, each characteristic of an embodiment being able to be combined with any other characteristic of any other embodiment in an advantageous manner.

We note, from now on, that figures 1 to 4 and 6 to 16 are to scale but that they may not be to the same scale.

Throughout the description, what is called "upper" or "top" is what is at the top or oriented upwards, in figures 1 to 4, 6, 7, and 12 to 16, figures which correspond to the configuration of use normal trolley and station objects of the invention. We call "lower" or "low", what is below or directed downwards, in these figures. The notions of vertical and horizontal derive from these definitions. We call “internal” what is close to or oriented towards a general vertical plane of symmetry 47 of the carriage and, external, what is oriented opposite to this vertical plane.

Figures 1 to 3 show a trolley 20 comprising a frame 21 fitted with a central driving wheel 23, two steerable front and rear wheels 22 and two side wheels 24. A battery 35 supplies the electric motor of the driving wheel 23 and the other electrical and electronic components of the carriage 20.

Thanks to the frame 21 supporting a drive wheel 23 positioned in the center of the rectangular base of the frame, four wheels 22 and 24 arranged in a diamond shape, each wheel, 22 and 24 being in the middle of one of the sides of this rectangular base of the carriage 20. At least two of the wheels 22 and 24 are free to rotate about a vertical axis of rotation. Preferably at least the wheels 22 which are in the general plane of symmetry 47 of the carriage 20 are thus free. The motorization of the carriage 20 is thus simplified as well as its maintenance.

The frame 21 has slots 25 intended to receive packaging 37, for example made of cardboard or plastic. Each package 37 has predetermined dimensions and a rectangular parallelepiped shape. Each location 25 comprises a support 26 inclined outwards with respect to the horizontal, that is to say whose edge furthest from the general plane of symmetry 47 (see ) of the carriage 20 is lower than the opposite edge. Each inclined support 26 supports a packaging 37 in a position where this packaging has two vertical faces oriented perpendicularly to the general plane of symmetry 47 of the carriage 20.

In the embodiment illustrated in the figures, there are six slots 25 on each side of the carriage, in two superimposed rows of three slots 25.

More generally and preferably, the carriage 20 comprises a plurality of supports 26 at the same height, a plurality of heights of supports 26 and supports 26 emerging on at least two sides of the carriage. The number of packages 37 supported by the carriage 20 is thus multiplied without increasing its grip on the ground in the same proportion. For example, the carriage 20 carries, on each side, at least two levels where there are at least two supports 26 for packages 37, i.e. a total capacity of at least eight packages 37.

As illustrated in Preferably, each support 26 of the lower packaging 37 is further away from the plane of symmetry 47 and therefore from the center of gravity of the carriage 20 than each support 26 of the packaging 37 which is above this lower packaging support. The upper mouth of the packaging 37 placed on the lower packaging support 26 is thus more accessible to the handler to place articles 45 in the lower packaging 37 .

Each location also includes a user interface screen 27, a lower horizontal stop 28 which retains the packaging 37 and prevents its sliding and an upper stop 29. The upper stop 29 is positioned above the support 26. The distance between the upper stop 29 and the lower stop 28 is less than the length of the diagonal of a vertical face of the packaging 37.

Thus, the opening of each package 37 is inclined, which facilitates the positioning of articles 45 (see ) in the packaging 37. The upper stop 29 prevents the tilting of the packaging 37, even if the center of gravity of the packaging 37 is not above the support 26.

Each lower stop 28 is surmounted by a horizontal roller 34 which is free to rotate. When a person or a machine lifts the lower edge of the packaging 37 which is retained by the lower stop 28, the packaging 37 supported by the inclined support 26 rolls on the roller 34 and leaves, at least partially, the carriage , by the effect of gravity, which facilitates its recovery by hand or by machine.

The chassis 21 comprises, on the rear face, two side bars 30 and a central driving drawbar 31 surmounted by a display screen 32. Two storage bins 33 are positioned laterally below the driving drawbar 31. Left indicator lights 27 and right 36 are positioned in the upper part of the rear face, here in the corner on a horizontal shelf 46.

As illustrated in , the carriage 20 is provided, on the front face, with a ferromagnetic metal plate 44.

As illustrated in , in some embodiments, the upper abutment 29 has the shape of an arch traversing the upper face of the packaging 37. Thus, the positioning of an empty packaging 37 on a support 26 is easy since it suffices to position it under the hoop forming the upper stop 29. In addition, in the event of tilting, the two vertical faces of the packaging 37 come to rest on this hoop 29, which reduces the risk of deformation of the packaging 37, compared to a stop on which only one face of the packaging 37 would come to bear.

In addition to the screen 27, the user interface of each location 25 includes a validation button 38, an increment button 39 and a decrement button 40.

Two openings 42 are left at the lower corners of the support 26 to allow the removal of the packaging 37, manually or by an unloading station, as explained with regard to figures 12 to 16.

The carriage 20 comprises, for at least one support 26, a measurement sensor (not shown) of the weight of the articles present on said support. This measurement is carried out by deducting the tare consisting of the support 26 and the packaging 37. A verification of the reference of the article 45 placed in the packaging 37 is thus possible as well as a verification of the number of articles 45 placed in packaging 37.

Optionally, the carriage 20 comprises at least one support for a detachable textile basket from the carriage. This textile basket is used, for example, for waste or picker accessories.

We describe, in the following, various electronic or computer means implemented by the carriage 20.

The driving drawbar 31 is positioned on the face, called "rear" of the carriage 20, face visible in . A camera (not shown) is positioned on the face of the carriage 20 opposite the rear face. The optical field of the camera is outside the carriage 20. The display screen 32 is configured to display the image captured by the camera. Thus, a handler can drive the trolley 20 while having a view of what is on the path of the trolley 20 and thus avoiding the risk of collision with objects or people.

Preferably, the carriage 20 comprises a means for guiding the driver of the carriage towards an article 45 to be placed in a packaging 37 supported by the carriage 20.

Preferably, the guide means for the driver of the carriage 20 comprises:
- when the carriage 20 is static, the display on the screen 32, of a representation of a path to be followed by the carriage 20 and/or of the next location where at least one article 45 must be picked up and,
- When the carriage 20 is mobile, the display on the screen 32 at least of the image provided by the camera.

For example, when the trolley 20 is static, the display screen 32 displays the next location where at least one item 45 to be picked is located in the form of a partial plan of the storage space and/or the coordinates (row and marker) of this location. The display screen 32 then also displays the description and/or the reference of the article 45 considered and the quantity of articles 45 to be taken.

As soon as the carriage 20 moves, that is to say as soon as the motorized wheel 23 starts, the display screen 32 displays the image captured by the camera, for security reasons. Alternatively, the next location remains visible in small size when the image captured by the camera is displayed, in order to guide the picker without hindering visibility.

According to another example, the guide means is an overlay, in the image captured by the camera, or, more generally, a combination, in this captured image, of a representation of a path to the next article 45 to be placed in a package 37.

With this guidance, the driver of the truck 20 can concentrate on driving and follow the guidance indications that the truck 20 provides him. The speed of loading the packages 37 and the safety of goods and people are thus improved.

To define this path, the industrial truck 20 preferably comprises:
- a means of access to a memory of article positions 45 in a storage space where the carriage 20 moves,
- a means for determining the position of the carriage 20 in this storage space and
- A means of guiding the driver of the carriage towards an article to be placed in a package.

It is noted that the memory of the position of articles 45 can be embedded in the trolley 20, and updated by a server of the storage space. Alternatively, the means of access to a memory of item positions 45 comprises a means of access, preferably wireless, to a storage space management system, for example hosted by this server.

In some embodiments, the means for determining the position of the carriage 20 comprises at least one camera and a means for processing images provided by at least one said camera. In some embodiments, the means for determining the position of the carriage 20 comprises means for receiving radio signals and means for positioning according to phase shifts between the radio signals received.

In some embodiments, the guide means for the driver of the carriage 20 comprises at least the two light sources 27 and 36 positioned on either side of the carriage 20, one of these light sources 27 and 36 emitting a predetermined light signal to represent the side where the packaging 37 is located where the article 45 will have to be placed.

In some embodiments, the trolley 20 comprises means of access to a computer configured to determine the shortest path, in length and/or in duration, for all the articles 45 to be placed in each packaging 37 carried by the carriage 20. The energy or time cost of filling each package 37 is thus minimized. It is noted that the computer can be integrated into the trolley 20 or remote, for example in the storage space management system. In embodiments, the computer is configured to take into account the path of several trolleys 20 to determine the path of at least one of these trolleys 20. The computer can thus avoid waiting times in an aisle where items 45 must be taken to be placed on packages 37 supported by different trolleys 20. In some embodiments, the computer is configured to assign to packages 37 of a trolley 20 articles 45 close to each other in the storage space. The set of paths traveled by different carriages 20 is thus reduced, or even optimized.

We observe, in , a succession 50 of steps carried out with the carriage 20 to pick up the articles 45 to be placed in the packages 37 that it supports.

During a step 51, the cart 20 receives or calculates a picking path to follow to pick up these items 45.

Steps 52 to 54 continue until the last article 45 to be picked is loaded into a packaging 37.

During a step 52, the central unit performs a determination of the position of the carriage 20 and a selection of the part of the path to be displayed to guide the handler who is driving the carriage 20.

During a step 53, the front camera of the truck 20 captures images and the central unit of the truck 20 combines this image with a representation of the part of the path to be displayed.

During a step 54, the screen 32 of the carriage 20 displays the image combination.

During a step 55, when the trolley 20 arrives opposite an article 45 to be picked up, the central unit controls the signaling of the side of the trolley where the packaging 37 is located where this article must be placed. 45. As explained above, this signaling may consist of the switching on of one of the light sources 27 and 36. In other embodiments, this signaling is carried out on the screen 32 of the carriage 20.

During a step 56, the central unit controls the signaling of each package 37 where at least one article 45 which is taken must be placed. This signaling includes the switching on of the screen 27 of the user interface of the support 26 supporting the packaging 37 in question. The displays 27 present at the end of each support 26 of the trolley 20 light up and indicate the quantity of articles 45 to be deposited in the packaging 37 carried by this support 26. Optionally, the lighting of one of the light sources 27 and 36 also makes it possible to identify on which side these supports 26 are located.

During a step 57, the reference of the article 45 is checked. This check is, for example, carried out with a bar code reader worn by the handler. As a variant, this verification is carried out with a bar code reader carried by the carriage 20.

During a step 58, the operator deposits the articles 45 in each destination packaging and validates this deposit by pressing the validation button 38. The carriage 20 then measures the additional weight supported by the packaging where a been placed at least one article 45 of the reference considered.

During a step 59, the number of articles is counted by dividing this additional weight by the unit weight of the article 45 considered.

During a step 60, it is checked that the number of articles 45 placed in this packaging 37 is indeed the number of articles 45 to be placed there. If there is a difference, an alarm is triggered.

Optionally, during step 60, it is checked that only the packaging 37 in which at least one article 45 of the reference considered should be placed, have an additional weight. If there are other packages, an alarm is triggered.

During a step 61, it is determined whether the loading of all the packages 37 carried by the carriage 20 has been completed. If yes, we go to step 62. If not, we return to step 55.

In step 62, cart 20 informs the storage space management system that cart loading is complete.

Then the handler unloads the packaging carried by the trolley, at a station for closing, storing or shipping the packaging, for example at an unloading station described with regard to Figures 6 to 17.

Figures 6 to 9 show an unloading station 70 comprising a frame 71 carrying removable external partitions 72 and the internal components of the station 70. These internal components comprise two parallel upper horizontal conveyors 73 and two parallel lower horizontal conveyors 74 , on either side of a positioning space 75 of a carriage 20. This space 75 is bordered by two rails 76 for guiding the side wheels 24 of the carriage. Thanks to these guide rails 76, the carriages 20 successively unloaded are in the same configuration with respect to the station, with a slight variation in their positions vis-à-vis the station 70. The bottom of this space 75 is provided a magnetic suction cup 78 configured to be in contact with and retain the ferromagnetic metal plate 44 of the carriage during the unloading of the packages 37. An optical barrier 79, the vertical scanning surface of which is shown in broken lines in , is positioned at the entrance to space 75 to detect the passage of a trolley 20 and to check that nothing and no one protrudes from space 75 during the unloading of packages 37.

At the height of the lower horizontal conveyors 74, there is a horizontal conveyor 77 whose direction of movement of the packages is perpendicular to that of the conveyors 74.

As illustrated in , station 70 is also equipped with two rotary elevators 80 and 81 for picking up the packages at the ends of the upper conveyors 73, their descent to the level of the conveyor 77 and their rotation so that they are picked up by the conveyor 77.

In FIGS. 10 and 11, the first stages of unloading a trolley 20 by a station 70 are observed. , the carriage 20 is inserted into the space 75. In , the carriage 20 is retained in the space 75 by the magnetic suction cup 78. As can be seen in FIGS. 10 and 11, each horizontal conveyor 73 or 74 comprises rollers 82 perpendicular to the lower edge of the packages 37 when these packages 37 are on carriage 20.

As illustrated in Figures 12 to 16, each horizontal conveyor 73 or 74 also includes, for each location 25, a tractor module 85 which includes:
- an external pneumatic suction cup 84 and
- castors 83.

Each tractor module 85 is moved perpendicularly to the general plane of symmetry 47 of the carriage 20 by a jack (not shown). In the rest position, illustrated in Figures 12 and 16, each tractor module 85 is retracted so that the rollers 83 are overhung by the rollers 82.

Once the trolley 20 has been positioned in the parking space 75, the magnetic suction cup 78 is activated and if the optical barrier 79 does not detect the presence of any operator in the space 75, as illustrated in , the tractor modules 85 are moved to the slots 25. The two ends of the tractor module 85 furthest from the suction cup 84, which are in alignment with the rollers 83, form a mobile fork 86 (see FIGS. 6, 8 to 12 and 14 to 16) configured to pass below the lower edge of each package 37, outside the grip of the lower stop 28 of the support 26. of rotation is parallel to the lower edge of the package 37.

The forks 86 then pass under the lower edge of a package 37, as illustrated in and rise through an opening 42 by lifting this edge of the packaging 37.

The fork 86, itself equipped with a roller at its end, performs this function to raise the packaging 37 to move the tractor module 85 forward under this packaging 37.

Preferably, the station 70 comprises a detector of fixing the electromagnet on a ferromagnetic metal plate. The motorization of the forks is activated only in the event of detection of the fixing of the electromagnet on the plate 44 of a carriage 20. Thus, the carriages 20 successively unloaded are in the same configuration with respect to the station 70 .

It is noted that the packaging 37 can roll on the roller 34 as soon as its lower edge reaches the level of this roller 34, under the effect of gravity. The rollers 83 of the tractor module 85 then continue to advance on the support 26 and under the packaging 37 until the pneumatic suction cup 84 is in contact with the external surface of the packaging 37, as illustrated in .

Then, the tractor module is retracted on the conveyor 73 or 74 with the packaging subjected, on the one hand, to the force of gravity and, on the other hand, to the traction exerted by the pneumatic suction cup 84, as illustrated in .

Once the tractor module has returned to its starting position, the rollers 83 find themselves overhung by the rollers of the conveyor 73 or 74, so that these rollers can drive the packaging towards the conveyor 77.

Thus, the station 70 comprises, for each support 26 of a carriage 20:
- a movable fork configured to pass below the lower edge of each package 37, outside the grip of the lower stop 28, each fork being provided with rollers parallel to the lower edge of the package 37 and
- a motorization of each mobile fork configured to, first, place the mobile fork below the lower edge of the packaging 37 then raise the fork to disengage the lower edge of the lower stop 28.

Thus, the movement of the fork allows the release of the packaging from the lower stop then its weight drives the packaging on the inclined support and on the wheels of the fork corresponding to this support.

In the embodiment represented in the figures, each tractor module fork 85 is mechanically associated with at least one pneumatic suction cup 84 configured to tow the package 37 towards the interior of the station 70.

In variants, each fork is provided with at least one motorized roller configured to move the packaging 37 towards the inside of the station 70. Thus, the packaging 37 can be moved by the motorized roller towards the inside. from station 70.

In the embodiment represented in the figures, the carriages 20 comprise a plurality of levels of packaging and the station comprises at least one elevator 80, 81 with motorized rollers configured to bring all the packaging 37 to the same level, on a conveyor 77 Labeling and packaging, for example on pallets, packaging 37, is carried out at the same level, which simplifies the devices used to carry out these operations.

We observe, in , a succession 90 of steps carried out with the station 70.

During a step 91, the optical barrier 79 detects the passage of a carriage 20.

During a step 92, the magnetic suction cup 78 is activated and detects its attachment to a ferromagnetic metal plate.

During a step 93, the optical barrier 79 verifies the absence of an operator in its optical field.

During a step 94, a central unit (not shown) of the station 70 triggers the movement of the tractor modules 85 towards the supports 26 of the carriage 20.

During a step 95, the pneumatic suction cups 84 come into contact with the outer surfaces of the packages 37.

During a step 96, once all the pneumatic suction cups 84 are in contact with the external surfaces of the packages 37, the central unit of the station 70 triggers the movement of the tractor modules 85 towards the conveyors 73 and 74.

During a step 97, once the tractor modules have returned to their initial position, the pneumatic suction cups 84 are deactivated, that is to say they no longer have a depression to attach themselves to the external surfaces. packaging 37.

During a step 98, the packages 37 positioned on the upper conveyors 73 are in turn positioned on the rollers of the elevators 80 and 81.

During a step 99, the elevators 80 and 81 lower the packages 37 and rotate them through a quarter turn before moving them on the conveyor 77.

During a step 100, the conveyor 77 is actuated to convey the packages leaving the station.

The packages 37 initially present on the lower conveyors 74 are only rotated a quarter turn by the elevators 80 and 81, before being conveyed to the exit by the conveyor 77.

During a step 101, the packages are closed and labeled for storage or shipment, in a manner known elsewhere.

Claims (10)

Trolley (20) for handling at least one packaging (37), characterized in that it comprises:
- a means of access to a memory of article positions in a storage space where the carriage moves,
- a means for determining the position of the carriage in this storage space and
- A means (32) for guiding the driver of the carriage towards an article (45) to be placed in a package. A cart (20) as claimed in claim 1, wherein the means for accessing an article position memory comprises means for accessing a storage space management system. Carriage (20) according to one of claims 1 or 2, in which the means for determining the position of the carriage comprises at least one camera and a means for processing images supplied by at least one said camera. Truck (20) according to claim 3, which comprises a display screen (32) above a drawbar (31), the screen being configured to display the image supplied by a camera. A trolley (20) according to claim 4, wherein the trolley driver guide means comprises:
- when the trolley is static, the display on the screen (32) of a representation of a path to be followed by the trolley and/or of the next location where at least one item (45) must be picked And,
- When the carriage is mobile, the display on the screen of at least the image supplied by the camera. Trolley (20) according to one of Claims 1 to 5, in which the means for determining the position of the trolley comprises means for receiving radio signals and means for positioning as a function of phase shifts between the radio signals received. Truck (20) according to one of claims 1 to 6, in which the means for guiding the driver of the truck comprises at least two light sources (27, 36) positioned on either side of the truck, one of these sources lights emitting a predetermined light signal to represent the side of the cart where the package (37) is located where the next item (45) is to be placed. Trolley (20) according to one of Claims 1 to 7, which comprises means of access to a computer configured to determine the shortest path, in length and/or in duration, for all the articles (45) to be place in each package carried by the cart. Trolley (20) according to claim 8, in which the computer is configured to take into account the path of several trolleys to determine the path of at least one of these trolleys. Trolley (20) according to one of Claims 8 or 9, in which the computer is configured to allocate the packages (37) of a trolley to articles (45) which are close in the storage space.