Plant bale handling device

Abstract

Title: Device for handling plant bales The invention relates to a bale grouper (1), comprising a picking-up device (20) picking up and conveying bales in their longitudinal direction to an exit zone (12), a grouping chamber (11) for the bales, comprising a floor (111), a transit device (120) movable in rotation about a tilting axis, between a first position where the transit device is inclined, each bale sliding on a ramp (120b) by gravity from the exit zone to a receiving surface (120a), a second position where the ramp straightens vertically and the receiving surface forms part of the floor; a first actuator (122) for translating the ramp in a grouping direction (Z) from the second position, to move the bales from the receiving surface to a bottom of the chamber (11a). Figure for abstract: Fig.4.

Description

Title of the invention: Device for handling bales of plants Technical field

[0001] The present innovation relates to a machine for grouping bales of plants such as hay, straw or other similar plants. This type of machine is also called a bale grouper. The invention applies in particular to groupers pulled by a tractor. This invention finds a particularly advantageous application in the grouping of parallelepiped-shaped bales. STATE OF THE ART

[0002] Once cut, hay or straw is usually gathered into bales that are scattered across the ground in a field. There are bale gatherers that allow the bales to be collected, grouped, compacted, and then bundled into a bundle of several bales. Some machines also allow the bales in a bundle to be tied together to maintain the integrity of the bundle. Once a bundle is formed, it is then placed on the ground to be collected by another machine.

[0003] More specifically, the groupers, whether pulled by tractors or equipped with drive wheels, generally comprise a conveying system allowing the bales to be picked up one by one from the ground and the bale to be conveyed to a grouping cage allowing the bales to be grouped and possibly compacted into a bundle.

[0004] The conveying systems generally used have a belt or a chain positioned longitudinally in the direction of travel of the tractor. These conveying systems are positioned behind the tractor. This positioning implies a significant longitudinal dimension of the machine. The driving and maneuvering of the rolling assembly, including the tractor and the grouping unit, is therefore delicate for the user and is not suitable for all types of roads.

[0005] A machine having a conveying system of this type is for example presented in document US2012055759. The positioning behind the tractor implies a significant longitudinal dimension and implies that the driver of the tractor must look in the opposite direction to the direction of travel of the tractor to correctly align the collection system with the bales present on the ground.

[0006] In order to reduce the space requirement along the longitudinal dimension, document FR2460602A1 details a horizontal grouping cage positioned perpendicular to the direction of travel of the tractor, the cage being offset relative to the tractor. This configuration involves a significant space requirement along the axis transverse. The width of the rolling assembly is therefore important. In addition to the difficulties of steering and maneuvering, this leads to a change in vehicle category of the rolling assembly which forces the user to reduce their travel speed on the road.

[0007] In order to reduce the size along the transverse axis, document US761085IB 1 details a grouping cage positioned horizontally and along the longitudinal direction. In order to create a bundle, this document shows a rotating plate rotating the straw bales so that their longitudinal section is perpendicular to the direction of travel of the tractor. This rotating plate creates an additional area, thus further increasing the longitudinal dimension of the machine.

[0008] Document ES1290184U then proposes a solution to reduce the longitudinal dimension of a machine of this type by positioning the grouping cage not horizontally but vertically. The vertical positioning implies that the machine may not be easily maneuverable under bridges for example and may therefore imply that some farmers cannot bring it to their fields. In addition, a machine of this type cannot be used on farms with a slope because it then presents a risk of capsizing.

[0009] The known systems are thus generally imposing and may not be suitable for specific farms such as those on slopes. Furthermore, they are not suitable for use on small farms with a yield of less than 40,000 bales per year. Indeed, the cost of such a machine is too high compared to the yield of these small farms.

[0010] An object of the present invention is therefore to propose a solution for reducing the dimensions of a bale grouper while maintaining a satisfactory bundle size for the user, in particular to facilitate its movement.

[0011] Other objects, features and advantages of the present invention will become apparent from a consideration of the following description and accompanying drawings. It is understood that other advantages may be incorporated. SUMMARY

[0012] To achieve this objective, according to one embodiment, a bale grouper is provided, in particular of hay or straw, configured to advance in a main direction of advancement comprising - a collection device configured to: • pick up balls with a longitudinal direction and placed on the ground and, • convey the bales in a conveying direction contained in a vertical plane and parallel to the main direction advancing to an exit zone and maintaining the longitudinal direction of the bales parallel to a vertical plane comprising the main direction of advance, - a bale grouping chamber, configured to receive the bales conveyed by the pickup device and comprising a floor, the floor being configured to support several bales while maintaining the longitudinal direction of the bales parallel to a vertical plane comprising the main direction of advance, preferably the bales being arranged side by side in a grouping direction so as to form at least part of a bundle of bales, the grouping direction being perpendicular to said main direction of advance, the chamber having an outlet opening shaped to allow the bundle to be evacuated from the grouping chamber for its evacuation by gravity onto the ground, the grouping chamber comprises a transit device shaped to move each bale by gravity from the exit zone of the collection device to the grouping chamber, the transit device comprising a ramp and a receiving surface, the transit device being mounted to rotate about a horizontal axis, called a tilting axis, between: - a first position in which the ramp is inclined relative to the vertical and the receiving surface is inclined relative to the horizontal, so that each ball slides on the ramp by gravity from the exit zone of the collection device until it reaches a stop on the receiving surface, - a second position in which the ramp straightens towards the vertical, preferably being substantially vertical, and the receiving surface is positioned so as to form part of the floor,

[0013] The grouper comprising an actuator configured to translate the ramp in the grouping direction, from the second position, so as to exert on the bales a force tending to move the bales inside the grouping chamber from the receiving surface towards a bottom of the grouping chamber.

[0014] Thus, the invention proposes a solution for obtaining a grouper having the smallest possible dimensions. Reducing the grouping chamber to a minimum dimension makes it possible to reduce the transverse size of the grouper while maintaining a satisfactory package size for the user.

[0015] According to one example, the transverse and longitudinal dimensions of the grouper according to the invention have been reduced so that the grouper can move forward on the road without special authorizations reserved for special vehicles. The grouper is thus easily maneuverable on any farm, even on slopes, and advantageously allows to be used by farms having access not accessible to prior art grouper dimensions.

[0016] In addition, the bales during grouping remain from the entry to the exit of the grouper in a single direction, that is to say their longitudinal direction, this direction being parallel to the main direction of advance of the grouper. Limiting the rotations of the bales makes it possible to avoid significant bulk in the longitudinal direction of the grouper. Indeed, unlike the solutions provided by the prior art in order to group bales in a more compact manner, the bales are not rotated to be placed perpendicular to the main direction of advance of the grouper. The solution proposed here makes it possible to make the grouper more compact while limiting the quantity of elements used, thereby reducing its cost.

[0017] Finally, this solution is suitable for farms falling within a wide range of yields in terms of the number of bales packed per year.

[0018] According to another aspect, there is provided an assembly comprising a grouper according to the invention and a plurality of bales, in particular of hay or straw, the grouper being configured so that the transit device passes from the first position to the second position after at least two bales of the plurality are arranged on the ramp and in contact with each other, in the second position, one of the at least two bales being located on the other of the at least two bales.

[0019] Thus, the grouping of bales in the grouping chamber has a height of at least two bales, thus also limiting the third dimension of the grouper. The grouper, according to the invention, also has a height limited compared to the solutions presented in the prior art such as the solution of document ES1290184U, allowing the grouper to pass under bridges without difficulty and to be usable in sloping fields.

[0020] According to another aspect, a bale grouper is provided, in particular of hay or straw, configured to advance in a main direction of advance comprising - a collection device configured to: • pick up balls with a longitudinal direction and placed on the ground and • convey the bales parallel to the main direction of advance to an exit zone and keeping the longitudinal direction of the bales parallel to a vertical plane comprising the main direction of advance, - a bale grouping chamber, configured to receive bales conveyed by the pickup device and comprising a floor, the floor being configured to support a plurality of bales while maintaining the longitudinal direction of the bales parallel to a vertical plane comprising the main direction of advance, preferably the bales being arranged side by side in a grouping direction so as to form at least part of a bundle of bales, the grouping direction being perpendicular to said direction of advance, the chamber having an outlet opening shaped to allow the bundle to fall by gravity onto the ground, the grouping chamber comprises a transit device shaped to move each bale by gravity from the outlet zone of the pickup device to the chamber, the transit device comprising a ramp and a receiving surface, the transit device being mounted to move in rotation about a horizontal axis, called a tilting axis, between: - a first position in which the ramp is inclined relative to the vertical so that each ball slides on the ramp by gravity from the exit zone of the collection device until it reaches the reception zone, - a second position in which the ramp straightens in a vertical direction so as to exert on the balls a force tending to move the balls inside the chamber from the receiving zone towards a bottom of the chamber.

[0021] According to another aspect, a binding system is provided comprising a strapping system, the strapping system comprising a frame, preferably rectangular, preferably positioned at the outlet opening of a chamber of a bale grouper, and positioned so as to surround a bundle of bales. The frame is configured so as to surround a bundle of bales present in the grouper. Preferably the frame is configured to surround the outlet opening. The system is configured to position a tie inside the frame and trigger, when the bundle is inside the frame, the ejection of the tie from the frame and the wrapping and then closing of the tie around the bundle.

[0022] It will be noted that this strapping system is particularly effective, inexpensive and space-saving. It can be used on a grouper independently of the transit device described above and can be the subject of independent protection.

[0023] According to this aspect, the framework comprises: - a link positioning device, the positioning device being configured to position at least one link, preferably a plurality of links, on at least part of a closed contour, preferably on the entire closed contour, preferably the positioning device is configured to push the at least one link along the frame, - a strapping head, the strapping head being configured to tension and close at least one link around the package. BRIEF DESCRIPTION OF THE FIGURES

[0024] The aims, objects, as well as the characteristics and advantages of the invention will emerge more clearly from the detailed description of an embodiment thereof which is illustrated by the following accompanying drawings in which:

[0025] [Fig. 1] [Fig. 1] represents a top view of the grouper carried by a tractor according to one embodiment.

[0026] [Fig.2] [Fig.2] represents a profile view of the grouper according to a mode of realization lization.

[0027] [Fig.3] [Fig.3] represents a rear view of the grouper according to a mode of realization lization.

[0028] [Fig.4] [Fig.4] represents a perspective view of the grouper according to an example of the invention.

[0029] [Fig.5A] Figures 5A to 5G show the mounting of a bundle of a plurality of bales in a grouper according to an exemplary embodiment.

[0030] [Fig.5B]

[0031] [Fig.5C]

[0032] [Fig.5D]

[0033] [Fig.5E]

[0034] [Fig.5F]

[0035] [Fig.5G]

[0036] [Fig.6A] Figures 6A, 6B and 6C represent the transit device carrying out the rotational and translational movements carried out according to an example.

[0037] [Fig.6B]

[0038] [Fig.6C]

[0039] [Fig.7] [Fig.7] represents a ball according to an example.

[0040] The drawings are given as examples and are not limiting of the invention. They constitute schematic representations of principle intended to facilitate the understanding of the invention and are not necessarily on the scale of practical applications. DETAILED DESCRIPTION

[0041] Before beginning a detailed review of embodiments of the invention, optional features which may possibly be used in combination or alternatively are set out below:

[0042] According to one example, in the first position the ramp is inclined relative to the vertical, forming an angle with the vertical substantially greater than or equal to 20°, preferably greater than or equal to 40°, preferably equal to 48°. Thus, the angle is sufficient to allow the balls to slide down the ramp by gravity.

[0043] According to one example, the receiving surface extends substantially perpendicularly, preferably perpendicularly to a plane in which the ramp mainly extends. Thus, the balls have one face in contact with the ramp and another face pressing against the receiving area.

[0044] According to one example, the tilting axis is parallel to the main direction of advancement. Thus, the bale is integrated into the grouping chamber with its longitudinal and transverse dimensions oriented along the same plane, from the introduction into the grouper to the exit from the grouper.

[0045] According to one example, a second actuator is configured to move the transit device from the first position to the second position along the tilting axis. The second actuator thus makes it possible to perform a rotational movement along a single axis.

[0046] According to one example, the second actuator is a linear actuator, preferably the second actuator is a cylinder, for example hydraulic, electric or pneumatic.

[0047] According to one example, the grouping chamber forms a cage.

[0048] According to one example, the cage is parallelepipedal in shape and has open and / or closed surfaces.

[0049] According to one example, the first actuator configured to translate the ramp in the grouping direction is a linear actuator. The first actuator thus makes it possible to create a bundle of bales and at least partially allows compaction of the bundle of bales.

[0050] According to one example, the first actuator is a cylinder, the cylinder being able to be hydraulic, electric or pneumatic. The first actuator thus makes it possible to carry out a translation along a single axis.

[0051] According to one example, the consolidator is configured so as to move forward while being fully supported by a tractor. The consolidator may then not include a road chassis, axle or wheels, the consolidator is then more compact and lighter and its entire weight can therefore be carried by a tractor. The absence of a road chassis also makes it possible to reduce the costs of the consolidator.

[0052] According to one example, the grouper is configured to move forward while being pulled by a tractor.

[0053] According to one example, the grouping device comprises additional wheels. The wheels, when present, allow the grouping device to be supported and allow it to move forward under the effect of traction by a tractor in the main direction of movement of the latter. Traction can be used by tractors not powerful enough to lift the grouping device, the grouping device having a weight of approximately 1500 kg.

[0054] According to an alternative example, the grouper is motorized so as to move forward while rolling. This allows the grouper to be independent and not depend on a tractor.

[0055] According to one example, the grouper has a maximum dimension, called transverse, measured perpendicular to the main direction of advance, substantially less than or equal to 3.5 m, preferably less than or equal to 3 m, preferably less than or equal to 2.95 m. The grouper is thus compact in its transverse dimension. In addition, this dimension can make it possible to remain below the road regulation threshold.

[0056] According to one example, the receiving surface is integral with the ramp when the second actuator is actuated to selectively move from the first to the second position. This thus makes it possible to perform a single tilting movement for both elements at a time.

[0057] According to one example, the ramp slides relative to the receiving surface when the first actuator is actuated. The articulation of the elements between them after the tilting allows the translation of the ramp alone and therefore allows the receiving surface to form an integral part of the floor of the grouping chamber.

[0058] According to one example, the bundler is configured such that upon translation, the at least two bales are moved as a stack of bales. Thus, the height of a bundle is limited to at least two bales.

[0059] According to one example, the bundle of bales is configured so as to have a height greater than or equal to 2*Hb, preferably equal to 2*Hb. The height of the chamber is therefore compact in its vertical dimension. This makes it possible to have a limited grouping chamber height. Depending on the height Hb of the bales, for example for a height Hb less than 46cm, at least three bales can form the height of the bundle.

[0060] According to one example, each ball of the plurality of balls is parallelepipedal with their largest dimension corresponding to the longitudinal direction.

[0061] According to one example, the first actuator is configured to move the ramp by a distance greater than or equal to X times the transverse dimension Lb of a bale, the transverse dimension being parallel to the grouping direction, preferably X>1*L b and preferably X>1.2*Lb. Thus, this allows the stack of bales to no longer be in contact with the receiving surface. In addition, this allows the bundle of bales to be compacted towards the bottom of the grouping chamber.

[0062] According to one example, the receiving surface has a transverse dimension less than or equal to the transverse dimension Lb of a bale, preferably equal to the transverse dimension Lb of a bale. This thus allows the floor of the grouping chamber to correspond to a smaller width and therefore to be more compact.

[0063] According to one example, the grouping chamber is configured to have a transverse dimension Lc equal to N*Lb with N being the number of positioned balls. side by side, preferably N being greater than or equal to 5, preferably N being equal to 5. This thus makes it possible to have at least five stacks of bales positioned laterally with respect to each other.

[0064] According to one example, the exit zone comprises an exit mechanism and a retention system comprising a retention surface, the retention system being configured to retain at least one ball in the exit zone, the retention system being mounted to be movable in rotation about a horizontal axis, called a pivot axis, between: - a first position in which the retention surface keeps the ball in the exit zone, - a second position in which the retention surface moves away from the first position so that each ball slides on the ramp by gravity from the exit zone of the collection device until it reaches a stop on the receiving surface.

[0065] The retention system thus makes it possible to retain the bales in the exit zone while the transit device is in its first position.

[0066] According to one example, the rotation of the retention system is carried out by a third mechanical actuator, preferably by a third linear actuator, preferably the third linear actuator is a jack. The third mechanical actuator thus makes it possible to carry out a rotational movement along a single axis.

[0067] According to one example, the output mechanism is shaped so that in the absence of the receiving surface, the ball tilts, under the effect of gravity, around an axis parallel to its longitudinal axis. Thus, in the second position of the retention system, the receiving surface prevents or limits the tilting of the ball.

[0068] According to one example, the retention surface is shaped to bear on a substantially vertical face of the ball when the ball is in the exit zone. The ball is thus retained in the exit zone.

[0069] According to one example, the grouping chamber is configured to produce a pack of at least 8 bales, preferably a pack of at least 10 bales. The grouping chamber thus allows for satisfactory efficiency while minimizing the size of the grouping chamber.

[0070] According to one example, the grouping chamber comprises a pressing device configured to exert a vertical force on the bundle of bales, the force being oriented so as to press the bundle against the floor. This makes it possible to press the stack of bales and subsequently the bundle so that during translation along the grouping axis the stack does not fall. In addition, this also makes it possible to compress the bundle vertically in order to have a compact bundle.

[0071] According to one example, the grouping chamber comprises a thrust system configured to exert a thrust on the bundle so as to allow the bundle of bales to be ejected from the grouping chamber through the outlet opening in an ejection direction, the ejection direction preferably being parallel to the main direction of advance. This thus allows easy ejection in the same direction as entry into the grouper and allows the bales to be kept in their longitudinal dimension.

[0072] According to one example, the exit opening comprises a tying system configured to tie the bales of the bundle of bales. This allows the bundle to be packed so that the bales are secured to each other.

[0073] According to one example, the tying system comprises a strapping system. The strapping system comprises a frame configured to surround a bundle of bales, and preferably configured to surround the exit opening. The strapping system is configured to position a tie within the frame and trigger, when the bundle is within the frame, the ejection of the tie from the frame and the wrapping and then closing of the tie around the bundle. This allows strapping to be performed around the outline of the bundle.

[0074] According to one example, the strapping system is configured to affix ties to the package perpendicular to the ejection direction.

[0075] According to one example, the strapping system is configured to affix at least one tie, to tension it and to close it at a splice on the package, the tie being configured to be positioned at a predetermined position N.

[0076] According to one example, the transit device is preferably configured so that in the second position the ramp straightens in the vertical direction, preferably being substantially vertical, and the receiving surface is positioned so as to form a part of the floor, substantially horizontal and substantially coplanar with the floor. The plane in which the floor of the chamber extends may be a few millimeters, or even a few centimeters, preferably less than 5 centimeters, below the receiving surface, when the latter is in the second position.

[0077] In the remainder of the description, the term “on” does not necessarily mean “directly on”. Thus, when it is indicated that a part or member A is supported “on” a part or member B, this does not mean that the parts or members A and B are necessarily in direct contact with each other. These parts or members A and B may be either in direct contact or be supported on each other by means of one or more other parts. The same applies to other expressions such as, for example, the expression “A acts on B” which may mean “A acts directly on B” or “A acts on B by means of one or more other parts”.

[0078] In the following detailed description, use may be made of terms such as "horizontal", "vertical", "longitudinal", "transverse", "upper", "lower", "top", "bottom", "front", "rear", "inside", "outside". These terms must be interpreted relatively in relation to the normal position of the grouper and the direction of advancement thereof. For example, the longitudinal concept of a bale corresponds to the largest dimension of a bale extending in the main direction of advancement. Similarly, the longitudinal concept of the grouper is understood as the dimension parallel to the main direction of advancement.

[0079] In the present patent application, when it is indicated that two parts are distinct, this means that these parts are separate. They are: - positioned at a distance from each other, and / or - movable relative to each other and / or - integral with each other by being fixed by added elements, this fixing being removable or not.

[0080] A single-piece unit cannot therefore be made up of two separate parts.

[0081] In the present patent application, the term "integral" used to qualify the connection between two parts means that the two parts are linked / fixed relative to each other, according to all degrees of freedom, unless explicitly specified differently. For example, if it is indicated that two parts are integral in translation in a direction X, this means that the parts can be movable relative to each other except in the direction X. In other words, if one part is moved in the direction X, the other part performs the same movement.

[0082] The terms “substantially”, “approximately”, “of the order of” mean “to within 20%, preferably to within 10%” or, when it is an angular orientation, “to within 10°”. Thus, a direction substantially normal to a plane means a direction having an angle of 90+10° relative to the plane.

[0083] A reference will also be used whose longitudinal or front / back direction corresponds to the x axis, the transverse or right / left direction corresponds to the z axis and the vertical or up / down direction corresponds to the y axis.

[0084] In the present patent application, the term mobile corresponds to a rotational movement or a translational movement or even to a combination of movements, for example the combination of a rotation and a translation.

[0085] In the following detailed description, use may be made of the term "satisfactory" to mean a yield or pack size, a satisfactory yield or pack size is understood to mean that at least 250 bales per hour, preferably 320 bales per hour, can be harvested.

[0086] In the detailed description which follows, the term “small” may be used. to designate a farm. A small farm is understood to be a farm producing less than 40,000 bales per year.

[0087] The present invention relates to a grouper 1 of bales 2a, in particular of hay or straw. A grouper 1 will now be described with reference to FIGS. 1 to 7.

[0088] A grouper 1 is generally configured to advance in a main direction of advancement A. The grouper 1 can advance using a tractor 3 or by its own means. The grouper 1 is usually configured to pick up bales 2a present on the ground and group them to form a bundle 2. The bundle 2 is then ejected from the grouper 1 to the ground and recovered by another agricultural machine.

[0089] Thus, according to one example, the grouper 1 comprises a picking-up device 20 configured to pick up bales 2a. The bales 2a have a longitudinal direction 1b and are arranged on a ground. Preferably, this longitudinal direction 1b is parallel to the main direction of advancement A of the grouper 1. The picking-up device 20 can also carry out the conveyance of the bales 2a according to a conveyance direction contained in a vertical plane and parallel to the main direction of advancement A to an exit zone 12. According to one example, the conveyance is carried out while keeping the longitudinal direction 1b of the bales 2a parallel to a vertical plane comprising the main direction of advancement A.

[0090] According to one example, the grouper 1 comprises a grouping chamber 11 for bales 2a making it possible to receive the bales 2a conveyed by the collection device 20.

[0091] The grouping chamber 11 comprises a floor 111. According to one example, the floor 111 can support several bales 2a while maintaining the longitudinal direction 1b of the bales 2a parallel to a vertical plane comprising the main direction of advance A. Preferably, the bales 2a are arranged side by side in a grouping direction Z perpendicular to said main direction of advance A. The grouping of bales 2a can thus make it possible to form at least part of the bundle 2 of bales 2a. According to one example, the floor 111 is at least partly fixed.

[0092] The grouping chamber 11 also comprises a transit device 120. The transit device 120 can make it possible to move each bale 2a from the exit zone 12 to the grouping chamber 11, more precisely to the inlet 1 lb of the grouping chamber 11. According to one example, the movement of each bale 2a from the exit zone 12 is carried out by gravity.

[0093] The transit device 120 comprises a ramp 120b and a receiving surface 120a. According to one example, the transit device 120 is mounted to be movable in rotation about a horizontal axis, called a tilting axis PI, allowing the transit device 120 to vary between two positions. According to one example, the transit device 120 can thus be in a first position in which the ramp 120b is inclined relative to the vertical and the receiving surface 120a is inclined relative to the horizontal. Thus, each ball 2a can slide on the ramp 120b by gravity from the exit zone 12 of the collection device 20 until it comes to a stop on the receiving surface 120a. According to one example, the transit device 120 can be in a second position in which the ramp 120b straightens up in the vertical direction, preferably being substantially vertical. The receiving surface 120a can thus be positioned so as to form a part of the floor 111.

[0094] According to one example, the grouper 1 comprises a first actuator 122 making it possible to translate the ramp 120b in the grouping direction Z, from the second position. The ramp 120b can then exert on the bales 2a a force tending to move the bales 2a inside the grouping chamber 11 from the receiving surface 120a towards a bottom of the chamber 11a until a bundle is formed.

[0095] The grouping chamber 11 comprises an outlet opening 112. According to one example, the outlet opening 112 allows the formed packet 2 to exit the grouper 1.

[0096] According to an example, the grouper 1 is used in the grouping of parallelepiped bales 2a illustrated in [Fig.7]. The bales 2a can thus have a longitudinal dimension lb as well as at least one transverse dimension Lb. The longitudinal dimension lb corresponds to the largest dimension of a bale 2a. The bales 2a can also have a vertical dimension or height Hb. The transverse and vertical dimensions of a bale 2a are understood according to the positioning of a bale 2a in the grouping chamber 11. The bale 2a can for example have a longitudinal dimension lb less than or equal to 110 cm (centimeters), preferably less than or equal to 100 cm, preferably less than or equal to 80 cm, preferably equal to 75 cm. The two transverse dimensions Lb and vertical Hb can be substantially the same dimension. The bale 2a can for example have a transverse dimension Lb equal to 36 cm.The bale 2a may, for example, have a vertical dimension Hb equal to 46 cm. The grouping of at least two bales 2a may form a stack 2b, illustrated in [Fig.5D], of bales 2a. The grouping of at least four bales 2a may form a bundle 2 of bales 2a, illustrated in [Fig.5G].

[0097] In the remainder of the description, other elements and characteristics of the grouper 1 will be described by considering an assembly 4 composed of a grouper 1 and the movement of a plurality of bales 2a.

[0098] The grouper 1 comprises the collection device 20. According to one example, the collection device 20 extends substantially in the longitudinal direction x. The collection device 20 extends in a vertical plane parallel to the main direction of advancement A.

[0099] The collection device 20 comprises an inlet orifice 21. According to one example, the inlet orifice 21 allows the introduction of the balls 2a into the collection device 20. The inlet orifice 21 can be at a distance of the order of a few centimeters from the ground in order to come into contact with the balls 2a present on the ground.

[0100] The inlet orifice 21 may have guides for directing the bale 2a into the collection device 20. The guides are positioned so that the bale 2a is introduced into the collection device 20 via a face comprising its transverse dimension Lb and its vertical dimension Hb. Thus the bale 2a can be introduced with its longitudinal dimension lb parallel to the main direction of advancement A.

[0101] The collection device 20 also comprises a transport mechanism 23. The transport mechanism 23 makes it possible, according to one example, to convey the bale 2a from the inlet orifice 21 to the outlet zone 12. Similarly, the transport mechanism 23 makes it possible, according to one example, to convey the bale 2a in a conveying direction contained in a vertical plane and parallel to the main direction of advancement A. The bale 2a can then, by means of the translational movement of the transport mechanism 23, achieve an ascent from the ground to the outlet zone 12 located at a height H, preferably H is greater than or equal to 1.3 m. Thus, the transport mechanism 23 may have a slope relative to the ground. The transport mechanism 23 may preferably be a chain having hooks for gripping the bales 2a, or preferably be a rotating belt.The transport mechanism 23 is preferably positioned centrally relative to the inlet orifice 21 in order to allow stable support of the ball 2a on the transport mechanism 23.

[0102] The height H may correspond to the maximum positioning height of a bale 2a. Thus, the grouper 1 will have a vertical dimension approximately greater than or equal to H+Lb. This dimension allows the grouper 1 to have a compact vertical dimension and thus allows it to pass under bridges when traveling on the road. In addition, the vertical dimension of the grouper 1 is limited in order, according to one example, to be able to use it on farms with a slope and thus reduce or even eliminate the risk of capsizing.

[0103] The pick-up device 20 also comprises side walls 22. The side walls 22 are preferably positioned on either side of the transport mechanism 23. Advantageously, the side walls 22 are positioned so as to correspond substantially to the height Hb of a bale 2a. The side walls 22 thus make it possible to hold the bales 2a on the transport mechanism 23 in the longitudinal direction lb of the bales 2a. Preferably, the side walls 22 are positioned on either side of the transport mechanism 23 symmetrically. Preferably, the side walls 22 are spaced substantially along the z axis by a dimension less than or equal to 55 cm, preferably less than or equal to 53 cm. Preferably, the side walls 22 are spaced substantially along the z axis by a dimension equal to 53 cm for bales 2a having a height Hb equal to 46 cm.

[0104] The bale 2a is thus transported from the ground to the exit zone 12.

[0105] According to one example, the output zone 12 is likened to a storage zone of the ball 2a before its introduction into the grouping chamber 11.

[0106] The exit zone 12 comprises an exit mechanism 123. According to one example, the exit mechanism 123 makes it possible to convey the bale 2a into the exit zone 12 over its entire longitudinal dimension 1b. According to one example, the exit mechanism 123 also makes it possible to support, at least in part, the bale 2a when the bale 2a is positioned in the exit zone 12. The bale 2a can then move from a position inclined relative to the ground, to a position substantially parallel relative to the ground.

[0107] According to one example, the output mechanism 123 is positioned offset relative to the transport mechanism 23. Similarly, according to one example, the output mechanism 123 is positioned eccentrically relative to the height Hb of the bale 2a. The bale 2a may thus be at least partly pressed against the output mechanism 123. The pressed portion may represent a smaller portion than the non-pressed portion. The bale 2a may thus be positioned unstably on the output mechanism 123.

[0108] The ball 2a can thus fall under the effect of its weight and gravity. The ball 2a can be retained in the exit zone 12 by means of a retention system 124 positioned opposite the exit mechanism 123.

[0109] The retention system 124, according to one example, thus makes it possible to retain the ball 2a on its longitudinal dimension 1b by contact with a face of the ball 2a. The ball 2a is then at least partly in contact with the retention system 124 when the ball 2a arrives in the exit zone 12. Preferably, the ball 2a is thus retained in the exit zone 12 before its introduction into the grouping chamber 11.

[0110] The retention system 124 comprises a retention surface 124a. According to one example, the retention surface 124a is mounted to be movable in rotation about a horizontal axis, called a pivot axis P2, allowing the retention system 124 to vary between two positions. Similarly, the retention surface 124a can vary between two positions, an open position and a closed position.

[0111] The retention system 124 also comprises a third mechanical actuator 124b. The third mechanical actuator 124b allows the retention surface 124a to be moved from its closed position to its open position and vice versa.

[0112] The two positions will now be described in relation to Figures 5A and 5B.

[0113] According to one example, when a bale 2a arrives in the exit zone 12, the retention system 124, preferably the retention surface 124a, is in the closed position. The retention surface 124a is therefore preferably positioned vertically relative to the ground. The retention surface 124a can then be at least partly in contact with ball 2a. Ball 2a can thus be kept in the exit zone 12 (see [Fig.5A]).

[0114] According to one example, the retention system 124 is deactivated, the third actuator 124b, preferably a linear mechanical actuator, is activated (see [Fig.5B]). The activation of the third linear actuator 124b can then cause the retention surface 124a to move from a closed position to an open position. The retention surface 124a can thus pivot to a position inclined relative to the vertical along the pivot axis P2 and allow the ball 2a to fall by gravity into the grouping chamber 11.

[0115] According to one example, the ball 2a falls by gravity onto the transit device 120 positioned according to its first position. Preferably, the transit device 120 can be positioned at the entrance 11b of the grouping chamber 11.

[0116] According to one example, the transit device 120 makes it possible to support at least one bale 2a. The at least one bale 2a has, according to one example, at least two surfaces in contact with the transit device 120. Preferably, one bale surface 2a is in contact with the receiving surface 120a. Preferably, another bale surface 2a is in contact with the ramp 120b (see [Fig.5B]). Preferably, the transit device 120 makes it possible to support at least two bales 2a (see [Fig.5C]).

[0117] According to one example, the ramp 120b is inclined relative to the vertical at an angle substantially greater than or equal to 20°, preferably greater than or equal to 40°, preferably equal to 48°. This inclination allows the ball 2a to slide on the ramp by gravity under the effect of its weight.

[0118] According to one example, the receiving surface 120a forms an angle preferably substantially equal to 90° relative to the plane in which the ramp 120b is included. Similarly, the receiving surface 120a extends perpendicular to a plane in which the ramp 120b mainly extends.

[0119] According to one example, the transit device 120 moves from the first position to the second position after at least two balls 2a are positioned on the transit device 120.

[0120] According to one example, the ramp 120b and the receiving surface 120a are two separate parts but integral when moving from the first position to the second position.

[0121] As illustrated in the example of Figures 6A, 6B and 6C, the transit device 120 comprises a support structure 120c carrying the receiving surface 120a and the ramp 120b. The support structure 120c has for example a frame shape. The support structure 120c is rotatably mounted on the grouping device around the tilting axis PI in order to selectively move from the first position to the second position. The tilting axis PI is parallel to the direction of advancement A of the consolidator.

[0122] According to one example, the transition from the first position to the second position is carried out by the second mechanical actuator 121. Preferably, the second mechanical actuator 121 is a linear actuator. Preferably, the second mechanical actuator 121 is a linear actuator, such as a hydraulic, electric or pneumatic cylinder. The second mechanical actuator 121 may be connected by one end to the support structure 120c. The second mechanical actuator 121 may be connected by another end to an upright 10, of the output zone 12, of the grouping device 1. As illustrated in [Fig.6B] and in [Fig.5D], the deployment of the second actuator 121 may allow the transit device 120 to perform a rotation along the tilting axis PL

[0123] According to one example, the transit device 120 is preferably configured so that in the second position the ramp 120b straightens up in the vertical direction, preferably being substantially vertical, and the receiving surface 120a is positioned so as to form a portion of the floor 111, substantially horizontal and substantially coplanar with the floor 111. The plane in which the floor 111 of the grouping chamber 11 extends may be a few millimeters, or even a few centimeters, preferably less than 5 centimeters, below the receiving surface 120a, when the latter is in the second position.

[0124] Thus, the receiving surface 120a can be positioned horizontally relative to the ground substantially on the same plane as the floor 111. Similarly, the ramp 120b is positioned vertically. According to one example, the two bales 2a are then stacked to form a stack 2b in the vertical direction on the receiving surface 120a.

[0125] According to one example, the receiving surface 120a is integral with the support structure 120c. It is for example fixed to the support structure 120c. The ramp 120b is slidably mounted on the support structure 120c. Thus, when the support structure 120c tilts around the tilting axis PI, it rotates the ramp 120b to selectively move from the first position to the second position.

[0126] Furthermore, a first actuator 122 makes it possible to cause the translational movement of the ramp 120b relative to the support structure 120c and to the receiving surface 120a. Similarly, the deployment of the first actuator 122, visible in [Fig.6C] and in [Fig.5E], allows the translational movement in the grouping direction Z of the ramp 120b relative to the support structure 120c and to the receiving surface 120a. This first actuator 122 is activated when the transit device 120 is in the second position. Thus, the receiving surface 120a forms a part of the floor 111 and the translation of the ramp 120b causes the moving the ball 2a or the stack 2b of balls 2a towards the inside of the grouping chamber 11. Preferably, the length of the stroke of this translation allows the balls 2a to pass beyond the receiving surface 120a. The balls can thus reach the fixed part of the floor 111.

[0127] According to one example, the receiving surface 120a is locked in position by the non-powering of the second mechanical actuator 121. The non-powering of the second mechanical actuator 121 can make it possible to ensure that the receiving surface 120a does not move during the movement of the ramp 120b.

[0128] According to one example, the transit device comprises at least one and preferably two cross systems 120d illustrated in FIGS. 6A and 6B. The cross system 120d makes it possible to guide the translational movement of the ramp 120b relative to the receiving surface 120a.

[0129] According to one example, the first mechanical actuator 122 can then be activated. The first actuator 122 makes it possible to move, or translate, the ramp 120b from the second position to a third position illustrated in [Fig.5E] along the grouping direction Z. Similarly, the ramp 120b slides relative to the receiving surface 120a. Similarly, the ramp 120b can translate relative to the receiving surface 120a by deploying the cross system 120d. The cross system 120d comprises uprights positioned so as to form a cross. The two uprights are pivotally hinged at a central portion of each upright. Each upright is connected by one of their ends to the support structure 120c and by their other end to the ramp 120b. Each upright is connected, by a first of these ends to one of the support structure 120c and to the ramp 120b, by an annular linear connection.Each upright is connected, by the second of these ends to the other of the support structure 120c and to the ramp 120b, by a pivot connection. The pivots and annular linears thus allow deployment of the cross system 120d when the first actuator 122 is actuated. The cross system 120d allows translational guidance of the ramp 120b when the first actuator 122 is actuated. This system is particularly robust, precise and inexpensive. Other guidance systems are possible. A solution based on the use of slides or several cylinders would not have the same advantages in terms of budget.

[0130] In the illustrated example, the transit device comprises two cross systems 120d, preferably vertically superimposed. The first actuator 122 is arranged between the two cross systems 120d.

[0131] Thus, the stack 2b of bales 2a previously formed can be moved along the grouping direction Z. According to one example, the stack 2b of bales 2a is moved by a dimension substantially equal to the transverse dimension Lb of the bales. More precisely, the ramp 120b can move a distance greater than or equal to X times the transverse dimension Lb of a bale 2a, the transverse dimension being parallel to the grouping direction, preferably X>l*Lb and preferably X>1.2*Lb. The displacement distance allows the translation of a complete stack 2b outside the receiving surface 120a towards the bottom 11a of the grouping chamber 11.

[0132] According to one example, the first actuator 122 is a linear actuator such as a cylinder, preferably hydraulic, electric or pneumatic. The first actuator 122 thus allows movement in a single direction without causing rotation of the balls 2a.

[0133] According to one example, upon deployment of the first actuator 122, the stack 2b of bales 2a is compressed vertically by a pressing device 114 present in the grouping chamber 11. The pressing device 114 may be a plate or a grid. Preferably, the pressing device 114 has at least one portion in contact with each stack 2b of bales 2a present in the grouping chamber 11.

[0134] According to one example, after the transit device 120 has moved from a second position to a third position, the transit device 120 returns to its first position to receive new bales 2a.

[0135] According to an example, each new stack 2b created will push the previous stack 2b upon activation of the first actuator 122 towards the bottom 11a of the grouping chamber 11.

[0136] According to one example, the integration of the bales 2a in the grouping chamber 11 is repeated up to at least a 5th stack 2b in order to form a bundle 2. Preferably, the at least 5th stack 2b integrated in the grouping chamber 11 is at least partly in contact with the receiving surface 120a comparable to the floor 111 (see [Fig.5F]). Preferably, the at least 5th stack 2b integrated in the grouping chamber 11 is at least partly in contact with both the receiving surface 120a and the floor 111. The receiving surface 120a may have a transverse dimension less than or equal to the transverse dimension Lb of a bale 2a, preferably equal to the transverse dimension Lb of a bale 2a. This makes it possible to have a reduced dimension of the grouping chamber 11. Indeed, the receiving surface 120a can thus be part of the floor 111 allowing the insertion of an additional stack 2b in a minimal chamber dimension 11.

[0137] The grouping chamber 11 can thus contain up to at least 5 stacks 2b of at least two bales 2a. The grouping chamber 11 can then have a transverse dimension Lc preferably equal to N*Lb with N being the number of stacks 2b of bale 2a. Preferably N is equal to or greater than 5, preferably N is equal to 5. Similarly, the grouping chamber 11 can then have a transverse dimension Lc preferably equal to N*Lb with N being the number of bales 2a positioned side by side on the floor 111 of the grouping chamber 11. Thus, the grouping chamber 11 makes it possible to form a bundle 2 of bales 2a of at least 8 bales, preferably of at least 10 bales. According to one example, the grouping chamber 11 can make it possible to form a bundle 2 of bales 2a preferably of at least 12 bales, preferably of at least 14 bales. The grouping chamber 11 thus makes it possible to achieve sufficient efficiency while reducing the size of the grouping chamber 11. Thus, the number of bales 2a in the grouping chamber 11 can depend on the dimensions of the bales 2a and / or the dimensions of the grouping chamber 11.

[0138] The grouping chamber 11 comprises a thrust system 14 (visible in [Fig.4]). The thrust system 14 makes it possible to eject the packet 2 from the grouping chamber 11. The thrust system 14 can allow the ejection of the packet 2 in an ejection direction E substantially parallel and opposite to the main direction of advancement A.

[0139] According to one example, the pushing system 14 comprises an ejection plate 141 positioned so as to allow the ejection of the bundle 2 from the rear of the grouper 1 along the main direction of advancement A. The bales 2a can thus exit the grouper 1 while keeping their longitudinal dimension 1b parallel to the main direction of advancement A.

[0140] According to one example, the ejection plate 141 is a plate or grid being at least partly in contact with all the stacks 2b of balls 2a of the pack 2. Similarly, the ejection plate 141 is at least partly in contact with all the balls 2a of the pack 2. Thus, this allows each of the balls 2a of the pack 2 to exit through the exit opening 112 at the same speed and in a homogeneous manner.

[0141] According to one example, the outlet opening 112 has the same transverse and vertical dimensions as the grouping chamber 11.

[0142] The outlet opening 112 comprises a tying system configured to tie the bales of a single bundle when the bundle is ejected from the grouper. Preferably, the tying system comprises a strapping system 13. It is configured to deploy and close a tie 130 around the bundle 2. This strapping system 13 comprises a rectangular frame 13a, framing the outlet opening 112. Similarly, the rectangular frame 13a surrounds the outlet opening 112. The frame 13a can thus make it possible to strap around the bundle 2. Similarly, the rectangular frame 13a surrounds the bundle 2 of bales 2a. According to one example, a portion of the frame 13a can be integrated into the floor 111 of the grouping chamber 11.

[0143] According to one example, the rectangular frame 13a of the strapping system 13 straps the package 2. The frame 13a may comprise a tie positioning device 130. The tie positioning device may be configured so as to pushing the link 130 along the frame 13a. According to one example, the frame 13a is hollow, thus allowing the link 130 to be pushed into the frame 13a. The link positioning device 130 may be configured to position at least one link, preferably a plurality of links.

[0144] According to one example, the frame 13a may also comprise a strapping head. The strapping head is configured to tension and close the at least one tie around the package 2. The strapping head may be configured to affix a tie 130 to the package 2. The frame 13a comprises at least one tie 130, preferably a plurality of ties 130. In the following, it is considered, without limitation, that the frame 13a, and by extension the strapping system 13, comprises several ties 130.

[0145] According to one example, when the ties 130 form a closed or substantially closed contour inside the frame 13a, the ties 130 are retracted. This retraction causes the ties 130 to exit the frame 13a to position themselves in contact with the bundle 2. This retraction is for example ensured by the strapping head. The strapping system 13 thus makes it possible to tie the bundle 2. The strapping can be carried out by the ties 130 illustrated in [Fig.5G] or by a plastic film not shown. According to one example, the ties 130 are positioned perpendicular to the ejection direction E and to the main direction of advancement A. That is to say that the closed contour that they form is inscribed in a plane perpendicular to the advancement of the grouper 1. The closed contour that they form is inscribed in a plane perpendicular to the direction of ejection E of the bundle from the grouping chamber 11. The ties 130 can be made of plastic material.130 links can also be made of metal.

[0146] According to one example, the strapping system 13 may be configured to tension the ties 130. Thus, the bales 2a of the bundle 2 may be clamped together. The tension applied by the strapping system 13 may be substantially greater than or equal to 500 N (Newton), preferably greater than or equal to 1000 N, preferably greater than or equal to 2000 N, preferably greater than or equal to 3000 N, preferably greater than or equal to 4000 N, preferably equal to 5000 N.

[0147] According to one example, the links 130 are closed at a splice on the bundle 2. The links 130 may be closed after one turn of the bundle 2 has been completed. Thus, the links 130 are closed in order to hold the bundle 2. The splicing of the links 130 may be carried out by welding, preferably by friction, or by thermal application or by ultrasound. The splicing of the links 130 may also be carried out by assembly-stamping, also called clinching.

[0148] According to one example, the ties 130 can be positioned at predetermined regular intervals N. Thus, the pushing system 14 can push the bundle 2 to a first position of a first tie 130. The strapping system 13 can affix a first tie 130 to the bundle 2. The first tie 130 can be tensioned and then welded by the strapping head. The first tie 130 can then be released and come into contact with the bundle 2. Then, the pushing system 14 can continue pushing the bundle 2 to a second position of a second tie 130. The strapping system 13 can affix a second tie 130 to the bundle 2. The second tie 130 can be tensioned and then welded by the strapping head. The second tie 130 can then be released and come into contact with the bundle 2. A number N of ties 130 can be affixed. The pushing system 14 can then push the strapped bundle 2 until the bundle 2 has completely exited the grouping chamber 11.

[0149] This binding system has the advantage, in particular, of being very cost-effective and requiring very little space compared to known systems. It can be used on a grouping device independently of the transit device 120 described above.

[0150] The exit opening 112 also includes an exit platform 112a. The exit platform 112a acts as an extension of the floor 111 outside the grouping cage 11. The exit platform 112a allows the bundle 2 to be held parallel to the floor 111 during ejection of the bundle 2 and its packaging by the strapping system 13. The bundle 2 can then be evacuated from the exit platform 112a by gravity to land on the ground.

[0151] According to one example, all of the elements detailed above are moved by means of a hydraulic system 30. The hydraulic system may comprise a pump 31, a reservoir 32 and a radiator 33 visible in [Fig.l].

[0152] According to one example, the elements detailed above are activated in sequence using detectors not shown.

[0153] The grouper 1 can thus have a transverse dimension perpendicular to the main direction of advancement A substantially less than or equal to 3.5 m, preferably less than or equal to 3 m, preferably less than or equal to 2.95 m. The grouper 1 is thus compact in its transverse dimension and can easily travel on the road.

[0154] According to one example, the grouper 1 is compact and lightweight, so the grouper 1 can move forward along the main direction of travel A while being carried by means of lifting arms 3a illustrated in [Fig.l]. The lifting arms 3a can connect the grouper 1 to a tractor 3. More precisely, the lifting arms 3a can connect the rear of the tractor 3 with the front of the grouper 1. More precisely, the lifting arms 3a can connect the rear of the tractor 3 with the front of the grouping chamber 11 of the grouper 1. The grouper 1 can thus be fully supported by the tractor 3. Thus, the grouper 1 does not touch the ground. In addition to being compact in its transverse dimension, the grouper 1 can thus be carried. Thus, no approval is necessary to transport it on the road. In fact, a user can drive without approval or special authorization on the road with a carried tool of width less than 3.5 m in France and less than 3 m in Europe.

[0155] According to one example, the grouper 1 can advance along the main direction of advancement A while being towed by the tractor 3. Thus, preferably, the grouper 1 comprises additional wheels 70. These additional wheels 70 may be non-drive wheels provided with an offset free axis, for automatic pivoting. Thus, these additional wheels 70 cannot transmit energy and may have the function of guiding and supporting the weight of the grouper 1. The additional wheels 70 may be mounted in free rotation around a horizontal axis, this horizontal axis itself being mounted in free rotation around a vertical axis on the grouper 1. They may be described as “idle” wheels as on supermarket trolleys for example.

[0156] According to one example, when the grouper 1 advances along the main direction of advance A while being carried or being towed by a tractor 3 also advancing along the main direction of advance A, the grouper 1 can be positioned along the main direction of advance A at least partly both at the rear and on one side of the tractor 3. Thus, the inlet orifice 21 can be positioned substantially parallel to a tractor 3. Advantageously, the inlet orifice 21 can be positioned along the transverse direction z on the same plane as the tractor 3. Thus, the grouper 1 is compact along its longitudinal dimension x when it advances along its main direction of advance A thanks to a tractor 3.

[0157] According to one example, the grouper 1 can advance along the main direction of advancement A while being motorized. Thus, preferably, the grouper 1 comprises additional wheels 70 and a motor not shown in the figures. In the case of a motorized grouper 1, the additional wheels 70 may typically be steered wheels.

[0158] DIGITAL REFERENCES 1: grouper 10: amount 11: group room 1 la: bedroom bottom 11b: bedroom entrance 111: floor 112: exit opening 112a: exit platform 114: plating device Lc: grouping chamber width 120: transit device 120a: receiving surface 120b: ramp 120c: support structure 120d: cross system PI: tilt axis 122: a first mechanical actuator 121: a second mechanical actuator 12: exit zone 123: output mechanism 124: retention system 124a: retention surface 124b: a third mechanical actuator P2: pivot axis of the retention plate 13: Strapping system 13a: frame 130: link 14: Push system 141: Ejector plate 20: Collection device 21: inlet port 22: side walls 23: transport mechanism 30: Hydraulic system 31: hydraulic pump 32: hydraulic tank 33: oil radiator 70: additional wheel A: main direction of advancement Z: group management E: ejection direction 2: pack of balls 2a: ball N: number of balls Lb: transverse dimension of a bale lb: longitudinal dimension of a bale 2b: stack of bales 3: tractor 3a: lifting arm 4: together

Claims

Claims

1. Grouper (1) of bales (2a), in particular of hay or straw, configured to advance in a main direction of advancement (A) comprising: - a collection device (20) configured to: • pick up balls (2a) presenting a longitudinal direction (lb) and placed on a ground and, • conveying the bales (2a) in a conveying direction contained in a vertical plane and parallel to the main direction of advance (A) to an exit zone (12) and keeping the longitudinal direction (lb) of the bales (2a) parallel to a vertical plane (x, y) comprising the main direction of advance (A), - a grouping chamber (11) for the bales (2a), configured to receive the bales (2a) conveyed by the pick-up device (20) and comprising a floor (111), the floor (111) being configured to support several bales (2a) while maintaining the longitudinal direction (lb) of the bales (2a) parallel to a vertical plane (x, y) comprising the main direction of advance (A), preferably the bales (2a) being arranged side by side in a grouping direction (Z) so as to form at least part of a bundle (2) of bales (2a), the grouping direction (Z) being perpendicular to said main direction of advance (A), the chamber having an outlet opening (112) shaped to allow the bundle (2) to be evacuated from the grouping chamber (11) for the purpose of its evacuation by gravity onto the ground, the grouping chamber (11) comprises a transit device (120) shaped to move by gravity each bale (2a) from the exit zone (12) of the collection device (20) to the grouping chamber (11), the transit device (120) comprising a ramp (120b) and a receiving surface (120a), the transit device (120) being mounted mobile in rotation around a horizontal axis, called bas- culement (PI), between: - a first position in which the ramp (120b) is inclined relative to the vertical and the receiving surface (120a) is inclined relative to the horizontal, so that each bale (2a) slides on the ramp (120b) by gravity from the exit zone (12) of the collection device (20) until it reaches a stop on the receiving surface (120a), - a second position in which the ramp (120b) straightens in the direction of the vertical, preferably being substantially vertical, and the receiving surface (120a) is positioned so as to form a part of the floor (111), the grouper (1) comprising a first actuator (122) configured to translate the ramp (120b) in the grouping direction (Z), from the second position,so as to exert on the balls (2a) a force tending to move the balls (2a) inside the grouping chamber (11) from the receiving surface (120a) towards a bottom (11a) of the grouping chamber (11).,

2. Grouper (1) of bales (2a) according to the preceding claim, in which, in the first position, the ramp (120b) is inclined relative to the vertical, forming an angle with the vertical substantially greater than or equal to 20°, preferably greater than or equal to 40°, preferably equal to 48°.

3. A bale (2a) grouper (1) according to any one of the preceding claims, wherein the receiving surface (120a) extends substantially perpendicular to a plane in which the ramp (120b) mainly extends.

4. Grouper (1) of bales (2a) according to any one of the preceding claims, in which the tilting axis (PI) is parallel to the main direction of advancement (A).

5. Grouper (1) of bales (2a) according to any one of the preceding claims, in which a second actuator (121) is configured so as to move the transit device (120) from the first position to the second position along the tilting axis (PI).

6. Grouper (1) of bales (2a) according to the preceding claim in which the second actuator (121) is a linear actuator, preferably the second actuator (121) is a cylinder for example hy- hydraulic, electric or pneumatic.

7. Grouper (1) of bales (2a) according to any one of the preceding claims in which the grouping chamber (11) forms a cage.

8. Grouper (1) of bales (2a) according to any one of the preceding claims, in which the first actuator (122) configured to translate the ramp (120b) in the grouping direction (Z) is a linear actuator.

9. Grouper (1) of bales (2a) according to the preceding claim, in which the first actuator (122) is a cylinder, the cylinder being able to be hydraulic, electric or pneumatic.

10. A bale (2a) bundler (1) according to any preceding claim wherein the bundler (1) is configured to move forward while being fully supported by a tractor (3).

11. A bale (2a) bundler (1) according to any one of claims 1 to 9, wherein the bundler (1) is configured to move forward while being pulled by a tractor (3).

12. Grouper (1) of bales (2a) according to any one of claims 1 to 9 in which the grouper (1) is motorized so as to move forward while rolling.

13. Grouper (1) of bales (2a) according to the two preceding claims in which the grouper (1) comprises additional wheels (70).

14. Grouper (1) of bales (2a) according to any one of the preceding claims, in which the grouper (1) has a maximum dimension, called transverse, measured perpendicular to the main direction of advancement (A), substantially less than or equal to 3.5 m, preferably less than or equal to 3 m, preferably less than or equal to 2.95 m.

15. Grouper (1) of bales (2a) according to any one of the preceding claims in which the receiving surface (120a) is integral with the ramp (120b) when the second actuator (121) is actuated to selectively move from the first to the second position.

16. A bale (2a) grouper (1) according to any preceding claim wherein the ramp (120b) slides relative to the receiving surface (120a) upon actuation of the first actuator (122).

17. An assembly (4) comprising a grouper (1) according to any one of the preceding claims and a plurality of bales (2a), in particular of hay or straw, the grouper (1) being configured such that the transit device (120) moves from the first position to the second position after at least two bales (2a) of the plurality are arranged on the ramp (120b) and in contact with each other, in the second position, one of the at least two bales (2a) being located on the other of the at least two bales (2a).

18. Assembly (4) according to the preceding claim wherein, the grouper (1) is configured so that during translation, the at least two bales (2a) are moved in the form of a stack (2b) of bales (2a).

19. An assembly (4) according to any one of the two preceding claims wherein each ball (2a) of the plurality of balls (2a) is parallelepipedal with their largest dimension corresponding to the longitudinal direction (lb).

20. Assembly (4), according to any one of the three preceding claims in which the first actuator (122) is configured to move the ramp (120b) by a distance greater than or equal to X times a transverse dimension (Lb) of a bale (2a), the transverse dimension being parallel to the grouping direction (Z), preferably X>l*Lb and preferably X>1.2*Lb.

21. Assembly (4) according to any one of claims 17 to 20 wherein the receiving surface (120a) has a transverse dimension less than or equal to the transverse dimension (Lb) of a ball (2a), preferably equal to the transverse dimension (Lb) of a ball (2a).

22. Assembly (4) according to any one of claims 17 to 21 in which the grouping chamber (11) is configured so as to have a transverse dimension (Lc) equal to N*Lb with N being the number of balls (2a) positioned side by side, preferably N being greater than or equal to 5, preferably N being equal to 5.

23. Assembly (4) according to any one of claims 17 to 22 wherein the exit zone (12) comprises an exit mechanism (123) and a retention system (124) comprising a retention surface (124a), the retention system (124) being configured to retain at least one ball (2a) in the exit zone (12), the retention system (124) being mounted to move in rotation about a horizontal axis, called a pivot axis (P2), between: a first position in which the surface of retention (124a) holds the ball (2a) in the exit zone (12), - a second position in which the retention surface (124a) moves away from the first position so that each ball (2a) slides on the ramp (120b) by gravity from the exit zone (12) of the collection device (20) until it comes to a stop on the receiving surface (120a).

24. Assembly (4) according to the preceding claim, in which the rotation of the retention system (124) is carried out by a third mechanical actuator (124b), preferably by a third linear actuator (124b), preferably the third linear actuator (124b) is a jack.

25. Assembly (4) according to any one of claims 17 to 24 in which the grouping chamber (11) is configured so as to produce a pack (2) of at least 8 balls, preferably a pack (2) of at least 10 balls.

26. An assembly (4) according to any one of claims 17 to 25 wherein the grouping chamber (11) comprises a pressing device (114) configured to exert a vertical force on the bundle (2) of bales (2a), the force being oriented to press the bundle (2) against the floor (111).

27. ​​Assembly (4) according to any one of claims 17 to 26 wherein the grouping chamber (11) comprises a pushing system (14) configured to exert a push on the bundle (2) so as to allow the ejection of the bundle (2) of bales (2a) from the grouping chamber (11) through the outlet opening (112) in an ejection direction (E), the ejection direction (E) preferably being parallel to the main direction of advancement (A).

28. An assembly (4) according to any one of claims 17 to 27 wherein the outlet opening (112) comprises a binding system configured to bind the bales (2a) of the bundle (2) of bales (2a).

29. An assembly (4) according to the preceding claim wherein the binding system comprises a strapping system (13), the strapping system (13) comprising a frame (13a) configured to surround a bundle (2) of bales (2a) and preferably configured to surround the outlet opening (112), the strapping system (13) being configured to po- positioning a tie inside the frame (13a) and triggering, when the package (2) is inside the frame (13a), the ejection of the tie from the frame (13a) and the winding and then closing of the tie around the package (2).

30. Assembly (4) according to the preceding claim in which the strapping system (13) is configured so as to affix ties (130) to the package (2) perpendicular to the ejection direction (E).

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