ES2586149T3 - A device to collect waste - Google Patents

Abstract

A device for collecting waste separately, comprising: at least two containers (2) for inserting waste separately; a base structure (3) supporting said containers (2); a selective tilt mechanism (15) for tilting at least one container (2) to facilitate emptying of the containers (2), characterized in that the tilt mechanism (15) comprises a shaft (16) which is angularly rotational to the along a longitudinal axis of rotation (16a) respectively and rotatably supported by said base structure (3) and a selective connection system (17) associated with each container to connect a respective container (2) rotatably coupled on the shaft (16) to said shaft (16) and to allow the mechanical transmission of the rotation movement from the shaft (16) to the container (2) to make it bend around said longitudinal axis of rotation (16a) during the emptying step, wherein said selective connection system (17) comprises at least one slider (18) slidably associated with said shaft (16) and at least one interference element (19), present in said shaft (16 ), said slider (18) being mobile between a first non-operative position, in which it is positioned such that it rotates freely on said shaft (16), and a second operative position, in which it is coupled in said interference element (19 ), to connect the selected container (2) to said tree (16).

Description

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DESCRIPTION

A device to collect waste

The object of the present invention is a device for collecting solid waste separately.

In particular, the present invention relates to a mobile waste separation unit for collecting waste separately. The waste separation units are areas equipped with adequate equipment for the collection of different types of waste, which make it possible to carry out the so-called waste collection of the neighborhoods where it is the resident who brings the waste, preventing waste collectors have to pick them up door to door.

The collection of waste in urban areas is normally carried out using special containers, for example, bin or bell-shaped containers, which rest on the ground or underground on special lifting platforms, properly distributed throughout the neighborhoods urban and accessible to residents for the insertion of waste.

The containers are periodically left at the facilities, in motor vehicles equipped adequately adapted for that purpose and which are provided for the transport of the waste to the respective treatment areas.

For practical reasons and to reduce the amount of public land occupied, separate waste collection containers can be placed next to each other, instead of being distributed separately as individual units. However, planned waste separation units should thus be easy to move to allow cleaning of public areas, in addition to being able to load and unload to allow transport of them to waste disposal locations, usually by medium of motor vehicles.

In particular, they can be made as multi-compartment dump containers, which have special internal dividing doors that are connected only on one side or that are sliding and can be opened when it is necessary to empty the container.

Emptying takes place when using a motor vehicle equipped with a hydraulic loading / unloading hook that serves to transport and empty it.

Once the container has been loaded onto the vehicle, it is transported to the waste disposal location and emptied from the rear by gravity, opening the rear tail doors that have a horizontal or vertical hinge.

In other words, the container tilts and the internal dividing doors open one after the other, thus releasing, by gravity, the compartments of the various materials, which are poured directly into the respective area of the waste disposal site. dedicated to that particular type of waste.

The problem with this type of waste separation unit is in managing the opening of the doors, which are normally opened manually from the outside or even directly from the inside by the waste collector.

Another drawback that is observable in containers of this type is the low emptying height, which makes it necessary to unload the material in the ground or in a pit.

In addition, another drawback is in poor condition or in the lack of sealing between one compartment and the other.

A mobile waste separation unit according to the preamble of claim 1 is disclosed in WO2010 / 133265.

This waste separation unit comprises a plurality of containers placed next to each other and mounted on a support structure equipped with a hydraulic system to dump each tank and empty it as well.

The hydraulic system also manages the movement of the four vertical legs to lift the entire separation unit of multiple waste tanks, to load it in a special vehicle used to transport the entire waste separation unit to the disposal location.

The movement of the legs of the waste separation unit also involves opening the vertical cylinders that cooperate with the legs, to reduce the latter outside the space occupied by the vehicle.

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With this objective, there are many electrical and hydraulic components on board the waste separation unit to command and control the numerous actuators.

Therefore, the waste separation unit is structurally complicated and heavy, in addition to requiring hydraulic connections for the delivery and return of hydraulic oil, with a risk resulting from oil leaks. In fact, the waste collector must manually connect the hydraulic conduits that connect the vehicle equipped with a pump and the waste separation unit equipped with actuators and with a hydraulic system.

However, according to the Applicant, there are various aspects of the prior art systems described above that can be improved.

Specifically, the objective of the present invention is to overcome the limits and drawbacks described above with reference to the prior art.

More specifically, an objective of the invention is to offer a device for collecting waste separately that allows the collection of urban waste through a simple and safe instrument that allows residents to supply a plurality of types of waste to an equipped location, including the types of waste, for example, paper, glass, plastic, unclassified waste, organic waste, batteries, pharmaceuticals and oil, and operating on public land during a daily period or on different days according to a predefined schedule.

An additional objective of the invention is to make a device for collecting waste separately that proves to be structurally simple and easy to use with total safety for the user and for the waste collector.

In addition, an objective of the present invention is to offer a waste collection device that does not have elements complicated by electronic components and / or hydraulic parts.

Not least, an additional objective is that said device adapts to the arrangement on the ground in the desired direction, that is, with the side set for the insertion of waste in front of the sidewalk or the street, based on the needs of Each individual preselected site.

These and other objectives are also substantially achieved, in accordance with the invention, by providing, for at least two containers associated with the base structure, an inclination mechanism comprising an axis that is angularly rotating along a respective longitudinal axis of Rotation and which is rotationally supported by the base structure, and a selective connection system that is associated with each container, to allow the mechanical transmission of the rotary movement from the axis to the container and make it tilt around the axis.

These objectives are met by the object of the present invention, which is a device for collecting waste, particularly solid urban waste, which comprises the features set forth in claim 1 and / or one or more of the subsequent claims.

Other features and advantages of the invention will become more apparent from the detailed description of a preferred but not exclusive embodiment of a device for waste collection in accordance with the present invention.

This description is set forth herein below with reference to the accompanying drawings, which are provided only by way of non-limiting example and in which:

- Figure 1 is a perspective view of a solid waste device that is equipped with an inclination mechanism in accordance with the present invention, with some parts partially removed to make it easier to see other parts;

- Figure 2 is a view of the base structure that supports the waste collection containers that are part of the device for collecting waste constituting the object of this invention, the base structure associating with the mentioned tilting mechanism;

- Figures 3, 4, 6a and 6b are views of structural parts of the tilting mechanism associated with the device for collecting waste constituting the object of the present invention;

- Figure 5 is a view of the waste collection container associated with a structural support element thereof;

- Figures 7a, 7b and 7c show three loading stages of the waste collection device on a vehicle;

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- Figures 8a and 8b are two different perspective views of the waste collection device during the operative stage of emptying said device.

With reference to the cited figures, a device for collecting waste separately according to the invention is indicated in its entirety by reference number 1. The device 1 comprises at least two containers 2 for the insertion of separate urban waste, placing the containers 2 side by side and anchored in a base structure 3 that defines the structure that supports the device 1.

There are preferably three to seven containers, each of which is independent of the others and is provided with its own volume or tank (ranging, for example, between 1 and 6 cubic meters), delimited by a front wall 4, by a rear wall 5 opposite the front wall 4, by two side walls 6 defining respective sides, by a lower base wall 7 and by an upper wall 8 for closure.

The upper wall 8 also functions as a protective cover against the elements.

Two openings are provided in the walls of the container: a mouth 9 where the waste is inserted by the user and another mouth 10 to empty the inserted waste.

The insertion or opening mouth 9 is preferably arranged in the front wall 4 or in the upper wall, which, in that case, is partially inclined to facilitate the insertion of waste, while the outlet or opening mouth 10 is provided for the residues in the upper wall 8, in an opposite position with respect to the insertion mouth 9.

The insertion mouth 9 is preferably equipped with a special cover 9a that can be opened by means of a handle and / or a pedal 9 '.

The outlet opening 10 has a cover 10a that can be opened by remote control or automatically by gravity.

Each insertion mouth can be equipped with an electronic device to control access and comprise devices for the identification of users by means of a card with a transponder or a similar personal identification instrument and devices for the electromechanical release of each door.

The device 1, also defined as the waste separation unit, is typically rectangular in shape with the long side usually parallel to the sidewalk near which the waste separation unit is placed.

This device has a long front side 1a for the insertion of waste, an opposite rear side 1b and two side walls 1c (Figures 1, 8a and 8b).

The device 1 then comprises the aforementioned base structure 3 comprising a steel structure and at least one fixing element 11, preferably a rigid rod made of steel and which is operatively attachable by a loading / unloading arm 12 supported by a vehicle of motor 32 on which the waste separation unit 1 can be loaded.

Advantageously, there may be two fixing elements 11 arranged on opposite side walls 1c, for the purpose of allowing the waste separation unit 1 to be placed on the floor in the desired direction, that is, with the side set for the insertion of waste in front of the sidewalk or street side, based on the needs of each individual preselected site.

The base structure 3 can also comprise hooks or can be coupled by hydraulic hooks (not shown) to connect the waste separation unit to the flat base of the vehicle provided for transport to the disposal location.

During the transport and unloading stages, the fixing element 11 keeps the base structure 3 anchored to the vehicle (figure 7c) by means of the main hook 12 'of the loading arm 12 and by means of at least one pair of the hydraulic hooks cited that couple the horizontal beams at the base of structure 3, thus guaranteeing the stability of the assembly.

Preferably, at least one pair of idler wheels 13 is provided below the base structure 3 to slide the device on the ground during loading and unloading maneuvers. Advantageously, these wheels 13 can be made of Teflon® to prevent damage to the pavement in a historic center. The device 1 comprises a selective tilting mechanism 15 for tilting at least one container 2, to facilitate emptying of the container 2, as is visible in Figures 1 and 2.

The tilting mechanism 15 comprises a shaft 16 (figures 1, 2 and 3) that is angularly rotatable along a respective longitudinal axis 16a of rotation and rotatably supported by the base structure 3. The shaft 16

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it is supported in a stable position by means of special supports 3a that are part of the base structure 3 by means of bearings or pairs of semi-cylinder bushings.

In particular, each container 2 is articulated to the base structure 3 by means of a support structure 14 (Figure 5) provided with a robust hinge 14a, into which the aforementioned tree 16 is inserted.

Each container 2 thus demonstrates to be rotatably coupled around the shaft 16 and rotatable around the longitudinal axis 16a of the shaft 16.

The tree 16 is advantageously of a length that corresponds roughly to the length of the waste separation unit, which ranges, for example, between 3 and 6 meters, and which is preferably placed at a height of approximately 100 150 cm from the ground, when the device is placed on the ground.

The tilting mechanism 15 further comprises a selective connection system 17 associated with each container and capable of selectively connecting a container with the shaft 16 to allow the mechanical transmission of the rotary movement from the shaft 16 to the container 2. In other words, during normal use of the device for the insertion of waste, each container 2 is rotatably associated with the tree 16, without any risk of tilting, while, when left, the selected container 2 must be connected neatly, by means of the cited selective connection system 17, to the tree 16 which, with the rotation thereof, causes the inclination of the container 2.

As can be seen in FIG. 1, the shaft and the selective connection system 17 are advantageously associated with the rear wall 5 of each container 2, opposite to the front wall 4 facing the waste insertion side 1a.

The selective connection system 17 comprises at least one slider 18 (figures 1, 2 and 4) slidably associated with the shaft 16 and at least one interference element 19 that is present in the shaft 16.

The interference element 19 is made by at least one projection, preferably by a plurality of projections that extend radially along the shaft 16 alternating with smooth cylindrical areas 16b.

Therefore, as can be seen in Figure 3, the shaft 16 has a succession of smooth cylindrical zones 16b and zones 16c with one or more protuberances intended to transmit the rotational movement to the containers 2 by means of the interposition of sliders 18.

The so-called protrusions or protrusions that define the interference element 19 may consist of cradles, solid section bars or section bars welded to the tree 16 and which can be symmetrical in cross section (typically rectangular or rectangular with bevelled) or asymmetric in cross section , leaving a longer extension of the side that exerts the greatest force during the lifting stage of a container. There may be a bulge or a larger number of bulges to subdivide the tension (for example, from 4 to 8).

The slider 18, which is clearly visible in Fig. 4, has an elongated body 20 that extends along a longitudinal axis 18a between a first end 20a and a second end 20b, and a through opening 21 transverse to the longitudinal axis 18a and that is placed near the first end 20a. The through opening 21, inside of which the tree 16 is inserted, is substantially cylindrical in shape and has at least one radial cavity 22 that is of shape, number and position consistent with the protuberance (s) provided ( s) on the axis. In other words, the cavity (s) 22 found (s) in the through opening 21 is shaped to match the interference element 19.

The slider 18 is movable between a first non-operative position, in which it is positioned to rotate freely on the axis 16, and a second operative position, in which it is coupled in the interference element 19 to connect with the selected container 2 to the axis 16.

The slider 18 advantageously has grip handles 18 'to grip and move properly towards the coupling or disengagement position in the corresponding interference element 19.

According to an alternative configuration, not illustrated, if the device 1 comprises a limited number of containers 2, of the order of two or three containers, the sliders 18 can be connected neatly to each other by means of a single horizontal rod. The movement of this rod causes simultaneous sliding of all sliders 18 associated with the rod. After the movement of the rod, in order to have only the preselected slider attached, instead of all the sliders, the relative position of the sliders 18 in the shaft 16 must be compensated with respect to the interference elements 19. In other words , by placing the sliders 18 in a compensated position and at different distances from the respective interference elements 19, it is possible to guarantee the coupling of only one slide 18 at a time. Theoretically, this could be valid for any number of containers 2. This configuration could have the advantage of having a controlled rod in the head from a single point, manually or, possibly, also by means of a control

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electric or electrohydraulic fixed on board the vehicle, and thus able to control the horizontal sliding of the rod, leading it to be coupled to only one slider at a time.

In more detail, the slider 18 protrudes radially with respect to the tree and, along its elongated body 20, particularly near the second end 20b thereof, has a first contact portion 23 separated from the longitudinal axis of rotation 16a and pushing against the container 2, when the slider 18 is engaged in the interference element 19.

With respect to the through opening 21, a second contact portion 24 extends on the side opposite the side containing the second end 20a of the elongate body 20, and serves as a stop for the rotation of the container 2 in the emptying stage and for avoid accidentally tilting container 2 beyond a pre-established limit.

In addition, this second contact portion 24 also serves to prevent free and independent oscillation of the slider 18 around the longitudinal axis 16a of the shaft 16, when the slider 18 does not engage in the corresponding interference element 19.

In fact, the rotation of the slider 18 around the shaft 16a should only be possible in conjunction with the rotation of the shaft 16 around the same shaft 16a, after the coupling of the slider 18 in the interference element 19. Advantageously, the slider 18 can also be equipped with a fixing system 25 that is movable to fix it to the base structure 3 or to the structure 14 that supports the container 2, to connect it stably to one or the other when they are not in use. This fastening system 25 can comprise, for example, a pin provided with a pin with a split pin or a simple split pin.

The tilting mechanism 15 further comprises at least one control rod 26 (individually observable in Figures 6a and 6b in two different operating states) which is connected by means of a first end 26a thereof to an end 16d of the tree 16, with with respect to which the rod 26 is placed transversely.

In fact, the rod 26 has the function of controlling the rotation of the tree 16 during the stage of emptying the containers 2.

As can be seen in FIG. 3, the shaft 16 preferably has protrusions of the interference element 19 also at least at one end 16d, that is, where the control rod 26 is coupled.

In fact, the coupling of the first end 26a of the rod 26 with the shaft 16 takes place by inserting an end 16d of the shaft 16 into a through opening 26 'shaped to coincide with it and provided in the first rod end 26a (figures 6a and 6b).

The first end 26a is thus coupled to the end 16d of the tree 16 and is stably coupled thereto to activate the rotation of the tree 16.

The shaft 16 can advantageously comprise protrusions 19 also at the other opposite end 16d, for the purpose of also coupling a second rod 26, thus making it possible to load the device on board the motor vehicle in an opposite direction and, as a result, allowing the containers 2 to be vaccinated along the opposite side, based on how the waste separation unit is loaded on board the vehicle by the driver.

In other words, the device 1 can advantageously comprise two control rods 26 located on opposite sides with respect to the device 1, each being placed specifically on a respective side wall 1c, transverse to the longitudinal axis 16a of the tree 16.

The control rod 26 is preferably constituted by a steel section bar with a rectangular cross section, or by a flat flanged bar, and is provided with a fixing element 27 at a second end 26b thereof which is attachable with a drive unit 28 (observable in figures 1 and 8a).

This last unit can consist of a hydraulic actuator, for example, which can be associated with a vehicle, as shown in figures 7a, 7b and 7c, and is capable of activating the control rod 26 in the stage of emptying the containers 2 .

The drive unit 28 is preferably installable in a central position with respect to the transverse dimensions of the device 1, that is, substantially at the midpoint of the side walls 1c. When the drive unit 28 is mounted in a motor vehicle, it is advantageously placed immediately behind the engine cabin, in a central position with respect to the load plane of the vehicle.

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In this way, regardless of the direction of loading of the device and the dimensions of the control rod 26, the drive unit 28 can easily be connected to and act directly on the control rod 26.

To facilitate the movement of the control rod 26, the drive unit 28 is advantageously articulated to an end 28a thereof, opposite to an end 28b that connects with the rod 26. It can thus oscillate along a plane at a right angle to the tree 16 about an axis 28c parallel to the longitudinal axis 16a of the tree 16.

The fixing element 27 for coupling with the drive unit 28 may consist of both a through hole and a grip pin.

As illustrated in Figures 6a and 6b, the control rod 26 comprises a main portion 29, which supports the end 26a, and a mobile portion 30, which supports the second end 26b.

The mobile portion 30 is articulated to the main portion 29 and is mobile between a first passive position (figure 6a), in which it is aligned with the main portion 29, and a second active position (figure 6b), in which it is placed transversely with respect to the main portion 29 to engage with the aforementioned drive unit 28.

The rod 26 remains passive during the use of the waste separation unit on public lands and is placed above the fixing element 11 or the loading hook.

The rod is coupled, and thus placed in the active position, only during the stage of emptying one or more containers.

During normal use, the waste collection device 1 is stably placed on the floor, with the containers 2 stably placed in an upright position and the respective sliders 18 stopped and uncoupled from the interference elements 19. The portion The mobile 30 of the rod 26 is aligned with the main portion 29 and placed in a position that is substantially parallel with the ground.

When the waste separation unit needs to be transported to the waste disposal location, the motor vehicle loads the entire device 1 by fixing it by means of the fixing element 11 with the loading / unloading hook 12 '(figure 7a), lifting it above the pair of rear wheels 13 (figure 7b) and pulling it until it is loaded onto the flat base of the vehicle (figure 7c).

Once the device has been loaded onto the vehicle and the waste disposal location has been reached, it is possible to proceed with the selective emptying of the containers 2.

To do this, the waste collector must connect the container 2 to empty the shaft 16 by coupling the corresponding slider 18 to the respective interference element 19.

Subsequently, or before this, the drive unit 28 is fixed to the second end 26b of the rod 26, specifically to the fixing element 27.

The drive unit 28 may be integrated in the vehicle and anchored in the area between the cab and the loading / unloading system, as shown in Figures 7a-7c, in which a hydraulic cylinder is illustrated. The hydraulic cylinder can oscillate along a horizontal axis and has a head that is connectable to the rod 26 of the waste separation unit for the purpose of rotating it approximately 90 °. The extension of the drive unit 28 causes the rotation of the rod 26.

The rotation of the rod 26, in turn, causes the rotation of the shaft 16, which, in turn, causes the rotation of one or more containers 2 previously connected to the shaft by means of the selective connection system.

In the solution described above, the connection between the fixing element 27 and the drive unit 28 takes place manually, by means of a collector that is mounted on the specific stirrup at the rear of the cabin and connects the two elements.

Alternatively, the connection can be machined by means of a hydraulic device (not shown), provided at the connection end 28b of the drive unit 28. After activation, this hydraulic device that is connected on one side only extends to the control rod 26 which, in this case, is advantageously straight and without a movable portion articulated to a main portion, for holding and attaching the fixing element 27 provided at the second end 26b of the rod 26 and forming part of the waste separation unit.

In the case where the vehicle 32 is not equipped with a drive unit 28, the inclination of the container 2 can also be done using a mechanical mechanical device (a small crane or other device), which directly grabs the container, by means of a specific handle or gripping element (such

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as the opening pedal 9 'for example) preferably provided at the base of the front wall 4 of the container, and overturns it.

In addition, the emptying of each container 2 can take place by means of the rod 2 coupled to the fixing element 27 and put into rotation due to a small crane on the ground or which is installed in the vehicle.

The device 1 allows the emptying of each individual container 2 by rotating the horizontal tree 16 approximately 90 ° and in which the sliders 18 arranged in each container 2 are coupled.

Device 1 is thus capable of emptying individual containers using only kinematic mechanisms. Therefore, it does not have any electrical and / or hydraulic element dedicated to the transport and / or emptying thereof. The emptying is carried out by means of a single hydraulic actuator that preferably remains fixed behind the cabin and occupies a minimum amount of space. This makes it possible to use only one element of the hydraulic distributor of the system with which the vehicle is already equipped, keeping the pipes connected and the safety valves on board the vehicle in operation.

The inclination around 90 ° guarantees that the global center of gravity always remains within the base of the vehicle; In any case, as a precaution, there is the possibility of equipping the vehicle with two or four stabilizing legs that can be made by four vertical axis actuators that are lowered to the ground by means of a specific element of the hydraulic distributor of the vehicle. In any case, the stabilizing legs are fixed and can thus find enough space remaining within the limits of the vehicle and thus avoid lateral protrusions, as well as additional movement and additional components.

In addition, the described device that constitutes the object of the present invention allows the use of normal double or triple axle transport vehicles equipped with a standard hydraulic hook for loading / unloading. Finally, a system can also be provided for user identification that can be activated with an access key and operatively connected with a control module.

Claims (9)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 65 1. A device for collecting waste separately, comprising: at least two containers (2) for inserting waste separately; a base structure (3) supporting said containers (2); a selective tilt mechanism (15) for tilting at least one container (2) to facilitate emptying of the containers (2), characterized in that the tilting mechanism (15) comprises a shaft (16) that is angularly rotary along a respective longitudinal axis of rotation (16a) and rotatably supported by said base structure (3) and a system of selective connection (17) associated with each container to connect a respective container (2) rotatably coupled on the tree (16) to said tree (16) and to allow the mechanical transmission of the rotation movement from the tree (16) to the container (2) to cause it to bend around said longitudinal rotation axis (16a) during the emptying stage, wherein said selective connection system (17) comprises at least one slider (18) slidably associated with said tree (16) and at least one interference element (19), present in said tree (16), being movable said slider (18) between a first non-operative position, in which it is positioned such that it rotates freely on said tree (16), and a second operative position, in which it is coupled in said interference element (19), to connect the selected container (2) to said tree (16). 2. The device according to claim 1, characterized in that the slider (18) has an elongated body (20) extending along a longitudinal axis (18a) between a first end (20a) and a second end (20b) and a through opening (21) transverse to said longitudinal axis (18a) and placed near said first end (20a), into which said tree (16) is inserted; said opening (21) having at least one cavity (22) shaped to coincide with said interference element (19). The device according to claim 1 or 2, characterized in that said slider (18) protrudes radially from said tree (16) and has a first contact portion (23) separated from the longitudinal axis of rotation (16a) of the tree (16) and pushing against said container (2), when the slider (18) engages the interference element (19). The device according to claim 3, characterized in that said slider (18) comprises a second contact portion (24) that protrudes along the longitudinal axis (18a) on the opposite side, with respect to the opening ( 21), the second end (20b) containing the portion, so that any accidental tipping of the container beyond the preset limit during the emptying stage is avoided. The device according to any one of the preceding claims, characterized in that it comprises at least one control rod (26) connected by means of a first end (26a) thereof, to an end (16d) of said tree. (16) and placed transversely with respect to said tree (16), to control the rotation of said tree (16) during the emptying stage of said containers (2). The device according to claim 5, characterized in that the control rod (26) comprises a main portion (29) that supports said first end (26a) and a mobile portion (30) that supports a second end (26b ) of said control rod (26), said mobile portion (30) being articulated to the main portion (29) and which is mobile between a first passive position, in which it is aligned with the main portion (29), and a second active position, in which it is placed transversely to said main portion (29) to engage with a drive unit (28). The device according to claim 6, characterized in that said control rod (26) comprises, at a second end (26b), a fixing element (27) attachable with the drive unit (28) which is capable of moving the control rod (26) during the emptying stage of said containers (2). The device according to claim 7 characterized in that it comprises two control rods (26), each placed on an opposite side wall (1c) of the device, transverse to the longitudinal axis (16a) of the tree (16), being able to installing said drive unit (28) in a central position with respect to the dimensions of said side walls (1c) and articulating at one end (28a), opposite an end (28b) that connects with said rod (26), to oscillate along a plane at a right angle to the tree (16) around an axis (28c) parallel to the longitudinal axis (16a) of said tree (16). The device according to any one of the preceding claims, characterized in that said base structure (3) comprises at least one fixing element (11) that is operatively attachable by a loading / unloading arm (12) supported by a motor vehicle; the device preferably comprising two fixing elements (11) located on the opposite side walls (1c) of the device, transverse to the longitudinal axis (16a) of the tree (16) to allow loading of two faces of the device (1).