Patent Application
20190174679
The invention refers to a baler-wrapper combination and to a method for forming and wrapping at least one bale by using at least one wrapping device with a movable bale support, in particular for forming a round-cylindrical bale from loose agricultural crop material and wrapping its entire surface into an impermeable film.
A baler-wrapper combination is in particular known for agricultural purposes. It is used when it is desired to form at least one bale from crop material picked-up from an agricultural field, to wrap the entire bale surface into an impermeable wrap, and to deposit the wrapped bale on the ground. Thanks to the impermeable web the deposited bale is isolated from the surrounding air and is protected from moisture.
Such an agricultural baler-wrapper combination is moved over ground and comprises a bale forming device and a wrapping device. The bale forming device provides a drum-shaped or cuboid bale forming chamber. Seen in the travelling direction of the baler-wrapper combination the wrapping device is mounted behind the bale forming device providing the bale forming chamber.
Such an agricultural baler-wrapper combination operates as follows:
Several proposals for such agricultural baler-wrapper combinations have been made.
FIG. 1 of U.S. Pat. No. 6,679,035 B1 shows a baler 10 at which a bale wrapping implement 12 is attached. The bale wrapping implement 12 includes a main frame 22 which supports a bale wrapping or packaging arrangement 23. This arrangement 23 comprises an angular wrapping arm support frame 24 which supports a motor 25. The motor 25 drives an output shaft to which a wrapping arm 26 is coupled. The main frame 22 comprises a first elongate frame component 27. The forward end of this frame component 27 can pivot about the horizontal axis 20 perpendicularly to the travelling direction. The second frame component 28 is coupled via a pin 29 to a pair of horizontal and vertically spaced plates 30. These plates 30 receive a horizontal section 31 of the wrapping arms support frame 24.
The horizontal section 31 can rotate around the vertical pin 32. A pair of horizontal parallel rollers 33 is mounted at the second frame component 28. These rollers 33 can receive a bale delivered from the baler 10. For wrapping a bale the rollers 33 can be rotated such that a bale resting on the rollers 33 is rotated. The right-hand roller 33 can slide along the second frame component 28 such that the distance to the left-hand roller 33 can be increased and the wrapped bale can be dropped on the ground.
An actuator 34 has the form of a double-acting hydraulic piston-cylinder unit and comprises a cylinder 36 and a piston rod 38. The cylinder end of the actuator 34 is coupled to a horizontal projection 40 which is mounted at the first frame component 27. The rod end of the actuator 34 is coupled to a horizontal projection 42 which is mounted at the lower horizontal section 31 of the wrapping arm support frame 24. This lower section 31 is connected through a link 44 with the second frame component 28. This link 44 is attached by a vertical pin 46 to the lower section 31 and by a further vertical pin 48 to the second frame component 28. The first frame component 27 is supported on the ground by a support wheel 50. A smaller further auxiliary support wheel 54 usually does not touch the ground and is mounted at the second frame component 28.
During operation the actuator 34 can move the frame 22 of the bale wrapping implement 12 between receiving position (FIG. 2) and a wrapping position (FIG. 1). The frame 22 is moved from the receiving position of FIG. 2 to the wrapping position of FIG. 1 by retracting the piston rot 38 into the cylinder 36. By retracting and extending the piston rot 38 the second frame component 28 and the rollers 33 can pivot about the pivot pins 29 and 32 about 90 degrees.
FIG. 1 of EP1097628 A1 discloses an agricultural combination comprising a tractor 10, a baler 14, and a bale wrapper apparatus 16. The combination is moved over a swath 11. The baler 14 forms round-cylindrical bales 15 from crop material of the swath 11 and deposits them on the ground. The wrapper 16 picks up the bales and wraps them. In the embodiment of FIG. 3 the longitudinal axis 19 of the bale wrapping apparatus 16A has a lateral offset to the general axis 20 of the tractor 10 and the baler 14. For achieving this offset the drawbar 17 between baler 14 and wrapper 16A is hydraulically actuated. A wrapped bale 15A is deposited with a lateral offset to the axis 20. In the embodiment of FIG. 4 the longitudinal axis 21 of the wrapper 16B is positioned angularly to the center axis 20.
FIG. 5 of CA 2081839 A1 shows a combination comprising a round bale winding apparatus 1 which is attached to a bale press 21. The winding apparatus 1 is connected via a connecting frame to corresponding counter bearing elements of the press 21. The press 21 ejects a round bale 20. The ejected round bale 20 rolls backward over a roller grid 9 onto arms 10 of a bale loading bracket 11. This bale loading bracket 11 is arranged at the vehicle frame 6 and can pivot around a pivot axis 12, cf. FIG. 5. The ejected bale is moved onto a winding table 31 of the winding apparatus 1. This winding table 31 comprises two drivable rollers 41 which support the round bale 20. FIG. 5 shows the situation in which the ejected bale 20 rolls on the bale loading bracket. The hydro-mover 34 pivots the bale-loading bracket carrying the bale 20 upwards, cf. FIG. 5. The pivotal movement of the bale loading bracket 11 moves the round bale onto the tilted winding table 31. Later the winding table 31 is pivoted backwards and to a horizontal position. In addition the bale loading bracket 11 is further pivoted, cf. FIG. 6. FIG. 7 shows how the wrapped bale is deposited on the ground.
A problem solved by the invention is to provide a baler-wrapper combination with the features of the preamble of claim 1 and a bale forming and wrapping method with the features of the preamble of claim 24 wherein more flexibility in selecting a bale depositing location by the baler-wrapper combination can be achieved without significantly decreasing the performance.
This problem is solved by a baler-wrapper combination with the features of claim 1 and by a bale forming and wrapping method with the features of claim 24. Preferred embodiments are specified in the depending claims.
The baler-wrapper combination according to the invention comprises
The bale forming device
The or every wrapping device is mechanically connected with the bale forming device. The respective bale support of the or at least one wrapping device is moveable with respect to the bale forming device. Thereby the or every moveable bale support can be moved between
When the or one moveable bale support is in the or one lateral bale depositing position with respect to the bale forming device, this bale support has a lateral offset to a vertical center plane of the bale forming device. The entire bale support being in the lateral bale depositing position is positioned on the same side of the vertical center plane. In the case of a baler-wrapper combination belonging to a vehicle this vertical center plane is parallel to the travelling direction of the vehicle. Thanks to the lateral offset a horizontal distance between the bale support and the vertical center plane occurs. When the moveable bale support is in the bale receiving position, it is centered with respect to the vertical center plane.
The or at least one wrapper moving actuator can move the or at least one moveable wrapping device carrying a bale
The or every wrapping device can remove a bale from its bale support at least when the bale support is in the or one bale depositing position.
The baler-wrapper combination according to the invention is operated as follows and the bale forming and wrapping method according to the invention comprises the following steps:
According to the invention the baler-wrapper combination can move a bale which has been ejected out of the bale forming chamber onto the or one moveable bale support while this bale support is in the bale receiving position. As the bale receiving position is centered with respect to the vertical center plane, the bale can directly be moved onto the bale support. The corresponding wrapper moving actuator can move this bale support together with the carried bale from the bale receiving position into the or one lateral bale depositing position. Therefore it is not necessary to deposit an ejected bale onto the ground and later picks it up again and lifts it onto the bale support. Thanks to the invention the combination can form and wrap the bale in one pass.
Often only some locations on a field suit for depositing a wrapped bale there. Other locations are not suitable, e.g. due to a high inclination or a specific ground property at this location. A harvester should deposit a wrapped bale only on a suitable depositing location. According to the invention the or one wrapping device can deposit a wrapped bale when the bale support of this wrapping device is in the or one lateral bale depositing position. This feature increases the flexibility when selecting a suitable bale depositing position for depositing the bale on the ground. The bale depositing location can have a lateral offset with respect to the vertical center plane of the bale forming device in the moment of depositing the bale.
The invention makes it possible in an easy way that the baler-wrapper combination selectively wraps a bale on the or one bale support or does not wrap the bale outside of the bale forming chamber before depositing the bale on the ground. When it is selected to deposit the bale without wrapping it outside of the bale forming chamber, the or every bale support is pivoted into the or one lateral bale depositing position before or while the bale is ejected out of the bale forming chamber. The bale forming device ejects the formed bale out of the bale forming chamber. The ejected bale passes the or every wrapping device having a lateral offset and is deposited on the ground. It is not necessary that the bale is moved through the or one wrapping device. The wrapping device does not form an obstacle against ejecting a bale out of the bale forming chamber and directly depositing it on the ground. It is possible that the baler-wrapper combination deposits at least two bales in a cluster on the ground, namely one bale from a bale support being in the or one lateral bale depositing position and one bale directly moved from the bale forming chamber onto the ground or from the bale forming chamber via a bale support being in the center bale receiving position onto the ground.
The invention makes it possible that the baler-wrapper combination comprises two wrapping devices, one besides the other seen in a viewing direction parallel to the center plane. Thanks to the invention it is not necessary that the bale support of one wrapping device is positioned above or behind the bale support of the other wrapping device.
It is possible that the same baler-wrapper combination is selectively operated with one or with two wrapping devices. The further wrapping device can be mounted and demounted without rearranging the first, permanently mounted wrapping device.
It is possible but thanks to the invention not necessary that an actuator moves a bale support carrying a bale upwards. An agricultural bale can have a weight of several hundred kilos. This upward movement would require a movement of an object (bale support and bale) with a relatively high weight against the force of gravity and would therefore require a strong actuator. The wrapper moving actuator according to the invention, however, only needs to move a bale support in a horizontal plane, i.e. parallel to the ground, and not against the force of gravity.
Preferably the baler-wrapper combination belongs to a vehicle which is arranged to be moved in a travelling direction over ground. This travelling direction is parallel to the vertical center plane of the bale forming device. Preferably the bale forming device can eject a formed bale out of the bale forming chamber in a direction parallel to the vertical center plane.
In one embodiment the or every bale support can only be moved between exactly two positions. In an alternative embodiment the or at least one bale support can selectively be moved into a first or into at least one further bale depositing position. The selected bale depositing position may depend on an operating parameter, e.g. the weight of the bale on the bale support or the weight of a further bale in the bale forming chamber or a measured inclination of the baler-wrapper combination or the space available beside the baler-wrapper combination. It is possible that one bale depositing position has the lateral offset to the vertical center plane and a further bale depositing position is centered with respect to this center plane.
In general the provided bale forming chamber is positioned between two vertical chamber planes which are both parallel to the vertical center plane. Preferably two lateral sidewalls of the bale forming chamber define these chamber planes. While a bale is formed in the bale forming chamber, this bale is also positioned between these two chamber planes. In a preferred embodiment the bale support being in the or one lateral bale depositing position is positioned completely outside of the space between these chamber planes. This embodiment makes it even easier that the baler-wrapper combination selectively moves an ejected bale onto the or one bale support being in the bale receiving position or directly to a depositing location outside out the combination, e.g. onto the ground. Preferably the ejected bale remains between the chamber planes and can pass the or every bale support being in the lateral bale depositing position. It is not necessary that the ejected bale is moved through the or one wrapping device. Thereby a bale can selectively be wrapped by a wrapping device or can be deposited without being wrapped. It is possible to wrap one bale on the bale support being in the lateral bale depositing position and simultaneously eject a further bale without wrapping it.
According to the invention the respective bale support of the or at least one wrapping device is moveable between the bale receiving position and at least one lateral bale depositing position. Preferably the or at least one bale support can be moved into a position outside of the space between the chamber planes. This embodiment makes the following mode of operation possible: A first bale can be moved from the bale chamber onto the bale support of the moveable wrapping device being in the centered bale receiving position. When the bale support of this wrapping device is in the or one lateral bale depositing position and is entirely outside of the space between the parallel chamber planes, the bale forming device can eject a further bale out of the bale forming chamber. This ejected further bale remains in the space between the chamber planes and passes the bale support being in the or one lateral bale depositing position. The further bale can selectively
In one embodiment the respective bale support of the or one wrapping device is pivoted with respect to the bale forming device between the at least two positions. The wrapper pivoting axis for pivoting the bale support is preferably vertical, i.e. parallel to the vertical center plane. Preferably the wrapper pivoting axis has a lateral offset to the vertical center plane. It is even possible that the or at least one wrapper pivoting axis is positioned outside of the space between the two parallel chamber planes.
In a further embodiment the respective moveable bale support of the or one wrapping device is shifted with respect to the bale forming device between the at least two positions, i.e. a linear translation is performed. The shifting direction is perpendicular or angular to the vertical center plane and is preferably horizontal.
These two embodiments can be combined, i.e. the or at least one bale support is moved from one position into the other position by a superposition of a pivotal movement and a linear movement.
In one embodiment the baler-wrapper combination comprises two wrapping devices, namely a left and a right wrapping device. The terms “left” and “right” refer to a viewing direction from the wrapping devices towards the bale forming device and parallel to the vertical center plane, in the case of a vehicle therefore parallel to the travelling direction. The respective bale supports of both wrapping devices are moveable between at least two positions, namely a bale receiving position and at least one left or right lateral bale depositing position, resp. Preferably the vertical center plane is positioned between these moveable bale supports, at least if both bale supports are in the or one respective bale depositing position.
This embodiment enables the baler-wrapper combination to simultaneously wrap at least two bales and to deposit these two wrapped bale in a cluster at a depositing location, e.g. on the ground. A first bale is formed by the bale forming device and is moved onto the bale support of a first wrapping device (the left or right wrapping device being in the centered bale receiving position). The bale support of the first wrapping device carrying the first bale is later moved into the or one lateral bale depositing position. The first wrapping device wraps the first bale. Simultaneously or timely overlapping with wrapping the first bale a second bale is formed in the bale forming chamber. The formed second bale is moved onto the bale support of a second wrapping device (the right or left wrapping device) while the bale support of the first wrapping device is in the lateral bale depositing position and the bale support of the second wrapping device is in the centered bale receiving position. The bale support of the second wrapping device is moved into the or one bale depositing position while carrying the second bale. The second wrapping device wraps the second bale. Preferably both bales remain on the respective bale support until both bales are entirely wrapped and the baler-wrapper combination with the bale supports carrying the two bales reaches a suitable depositing location. Both bales are deposited at this suitable location.
Preferably the baler-wrapper combination can selectively
For depositing a bale without wrapping it by a wrapping device the respective bale support of the or every wrapping device is moved into the or one respective bale depositing position—with or without carrying a bale. The bale which is not to be wrapped outside of the bale forming chamber is ejected out of the bale forming chamber and is moved onto the depositing location and passes the or every wrapping device being in a bale depositing position. It is also possible that a bale is moved onto a bale support in the bale receiving position and is later deposited from this bale support in the or one bale depositing position onto the ground without being wrapped.
In one embodiment the or every wrapping device comprises at least one wrapping material holding device. The or every web holding device holds a reservoir with a web of wrapping material. For wrapping a bale on the bale support of this wrapping device the or at least one holding device is moved with respect to the carried bale. At least one web is pulled from the reservoir held by this holding device. In one implementation a holder actuator moves the or every holding device with respect to the bale support, e.g. rotates it around the bale along a vertical axis. In a further implementation the bale support rotates the carried bale. Both implementations can be combined.
Preferably the or at least one holding device is also entirely positioned on one side of the vertical center plane when the bale support is in the or one lateral bale depositing position and is positioned on this side of the center plane. Preferably the holding device and the bale support of the wrapping device are at every time point entirely positioned outside of the space between the parallel chamber planes when the bale support is in the bale depositing position.
In one embodiment not only the bale support but the entire wrapping device can be moved between the bale receiving position and the or one lateral bale depositing position. This embodiment makes it possible that the wrapping device starts to wrap a bale on the bale support while the wrapping device is still in the bale receiving position. The steps of moving the wrapping device into the bale depositing position and of wrapping the bale on the bale support can be performed timely overlapping. This embodiment saves time.
In a further embodiment only the bale support can be moved with respect to the bale forming device between the bale receiving position and the or one bale depositing position. The or every wrapping material holding device is preferably kept in a lateral position, i.e. in a position with a lateral offset to the vertical center plane, also when the bale support is in the bale receiving position. Preferably the bale support is moved towards the holding device when being moved into the bale depositing position. The or one wrapper moving actuator needs to move only the bale support but not the holding device, i.e. less parts are to be moved. In this embodiment the wrapping device preferably starts to wrap a bale on the bale support after the bale support has been moved into the or one bale depositing position.
In yet a further embodiment the or one wrapping device comprises a wrapper carrying device. The wrapper carrying device is connected with the bale forming device. The bale support is mounted at the wrapper carrying device and can be moved with respect to the wrapper carrying device into the bale receiving position and the or one bale depositing position. The wrapper moving actuator needs only to move the bale support with respect to the wrapper carrying device.
In one implementation the wrapping material holding device is mounted at the wrapper carrying device. In a further implementation the holding device is mounted at the bale support. The wrapper moving actuator moves the bale support with respect to the wrapper carrying device into the at least two positions.
In one embodiment a bale transfer support bridges the distance between the bale forming device and the or one moveable bale support being in the bale receiving position. An ejected bale is moved over this bale transfer support onto the bale support while the bale support is in the bale receiving position. The bale transfer support can just comprise passive parts, e.g. rollers, or an actively moved part, e.g. a pivotal bale transfer carrier onto which an ejected bale drops and a bale transfer actuator which pivots the bale transfer carrier carrying a bale away from the bale forming chamber towards the moveable bale support.
In one embodiment at least one ground-engaging wheel is mounted at the wrapper carrying device of the or one wrapping device. This embodiment increases the stability of the baler-wrapper combination, in particular when a bale is moved onto the bale support or when a bale support carrying a bale is moved from the bale receiving position into one lateral bale depositing position or when the combination is operated in a hilly environment.
In one embodiment the or one wrapper moving actuator first moves the or one bale support carrying an ejected bale from the centered bale receiving position into the or one lateral bale depositing position. The process of wrapping the bale on the moved bale support is started after the bale support has reached the lateral bale depositing position. This embodiment removes the need of moving the bale support into the bale depositing position while the bale on the bale support is wrapped. The bale forming device can quickly eject a further bale.
In an alternative embodiment the process of wrapping the bale on the bale support is already started when the bale support is still in the centered bale receiving position. The bale support is moved into the or one lateral bale depositing position while or after the bale is wrapped. This embodiment often increases the stability as the bale support in the bale receiving position is positioned behind the bale forming device in a centered position. In some implementations the width of the baler-wrapper combination is reduced while the bale support is in the bale receiving position. It is also possible that the step of wrapping the bale on the bale support is started while the wrapper moving actuator moves the bale support from the bale receiving position into the or one bale depositing position.
These and other aspects of the invention and of the preferred embodiment will be even more apparent from the detailed embodiment as described below and will be elucidated in detail there.
The baler-wrapper combination of the embodiment comprises
In the embodiment the bale forming device 40 of the baler-wrapper combination forms a sequence of round-cylindrical bales and operates as a continuous baler or as a non-stop baler. Such a continuous or non-stop baler can continue to pick-up crop material while the circumferential surface of the bale in the bale forming chamber is wrapped.
A continuous round baler comprises a wrapping chamber. This wrapping chamber is positioned behind the bale forming chamber—seen in the travelling direction TD. The bale is entirely formed in the bale forming chamber. As soon as the diameter of the bale in the bale forming chamber reaches a given threshold, the bale is moved from the bale forming chamber into the wrapping chamber. In the wrapping chamber the circumferential surface of the bale is wrapped. Simultaneously the formation of a further bale in the bale forming chamber is started. Such a continuous baler is disclosed in WO 2013/157949 A1, e.g.
A non-stop baler comprises a buffering chamber which is positioned between the pick-up unit and the bale forming chamber. Crop material is guided through the buffering chamber into the bale forming chamber. The bale is formed and is wrapped in the bale forming chamber. As long as the circumferential surface of the bale in the bale forming chamber is wrapped, crop material remains in the buffering chamber. Such a non-stop baler is disclosed in EP 2281436 A1 and in WO 2013/014291 A1, e.g.
A further approach is to use a baler with two bale forming chambers. Crop material is selectively guided into a first bale forming chamber or into a second bale forming chamber. Such a baler with two bale forming chambers is disclosed in DE 3248066 A1, e.g.
The invention can also be used for a baler-wrapper combination with a conventional round baler or a cuboid baler and a wrapper. The baler forms and wraps a bale entirely in the same chamber and does not process crop material while the circumferential surface of the bale is wrapped. This combination is stopped while the surface of the bale in the bale forming chamber is wrapped.
In the embodiment the baler-wrapper combination comprises
The terms “left” and “right” refer to the travelling direction TD.
The round baler 40 provides a drum-shaped bale forming chamber Ch. The circumferential surface of this chamber Ch is surrounded by a segment of an endless pressing belt. Two disks form the lateral sidewalls of this chamber Ch. A right disk 46.r can be seen in
The round baler 40 is substantially symmetrical to a vertical center plane P. The bale forming chamber Ch is positioned between two vertical chamber planes P.l, P.r which are parallel to the vertical center plane P. In the embodiment these chamber planes P.l, P.r are provided by the two planes in which the disks extend.
The left wrapping device comprises a left wrapper 8.l and a left wrapper carrying device 13.l. The right wrapping device comprises a right wrapper 8.r and a right wrapper carrying device 13.r. The terms “left” and “right” refer to the travelling direction TD of the baler-wrapper combination over ground. In
Every wrapper 8.l, 8.r of the embodiment comprises
Every wrapper carrying device 13.l, 13.r comprises
Every film roll holder 11.l.1, 11.l.2 or 11.r.1, 11.r.2 serves as a holding device and is mounted on the respective wrapping ring 5.l, 5.r and can carry one film roll serving as a wrapping material reservoir. An empty film roll can be replaced with a new film roll. When being kept in the film roll holder 11.l.1, 11.l.2, 11.r.1, 11.r.2, the film roll can rotate such that a web of plastic film can be pulled from the film roll holder 11.l.1, 11.l.2 or 11.r.1, 11.r.2. The middle axis of the film roll is vertical. The roller carrier 14.l, 14.r and the two bale carrying rollers 12.l.1, 12.l.2 or 12.r.1, 12.r.2 together form a bale support which is adapted for carrying and rotating a bale to be wrapped. The center axis of the carried bale is parallel to the axes of the bale carrying rollers 12.l.1, 12.l.2 or 12.r.1, 12.r.2.
The ring mover 4.l, 4.r is mounted at the cantilever arm 10.l, 10.r and carries and can rotate the wrapping ring 5.l, 5.r with respect to the bale support 14.l, 14.r, 12.l.1, 12.l.2, 12.r.1, 12.r.2 around a vertical axis which is perpendicular to the drawing plane of
In place of a wrapping ring 5.l, 5.r carrying two film roll holders it is also possible to provide two holder arms which are mounted at a vertical shaft above the bale support and which carry at their lower ends to film roll holders. Of course only one holder in place of two film roll holders can be used. It is further possible that a stationary film roll holder is used.
The wrapper carrying arm 3.l, 3.r carries the roller carrier 14.l, 14.r for the bale carrying rollers 12.l.1, 12.l.2, 12.r.1, 12.r.2 and thereby the bale support of this wrapping device. The connecting member 7.l, 7.r is rigidly connected with the baler 40. The inner carrying arm 1.l, 1.r is mounted at the connecting member 7.l, 7.r. The inner end of the cantilever arm 10.l, 10.r is connected with the outer end of the inner carrying arm 1.l, 1.r in an element 9.l, 9.r. The single-wheel carrier 27.l, 27.r is mounted at the free end of the cantilever arm 10.l, 10.r, cf.
In one embodiment the cantilever arm 10.l, 10.r is rigidly connected with the inner carrying arm 1.l, 1.r such that a through-going arm 1.l, 1.0.l, 1.r, 10.r is formed. A pivot 9.l, 9.r connects the wrapper carrying arm 3.l, 3.r with the inner carrying arm 1.l, 1.r. The wrapper carrying arm 3.l, 3.r can pivot with respect to the through-going arm 1.l, 1.r, 10.l, 10.r around a vertical pivoting axis running through these pivots 9.l, 9.r.
The horizontal hydraulic piston-cylinder unit 2.l, 2.r is pivotally connected with the connecting member 7.l, 7.r and with the wrapper carrying arm 3.l, 3.r, cf.
In the bale receiving position the bale support 14.l, 14.r, 12.l.1, 12.l.2, 12.r.1, 12.r.2 is positioned behind the baler 40 and preferably substantially between the planes P.l and P.r. The bale support 14.l, 14.r, 12.l.1, 12.l.2, 12.r.1, 12.r.2 can receive an ejected bale. The axes of the two bale carrying rollers 12.l.1, 12.l.2 and 12.r.1, 12.r.2 are perpendicular to the travelling direction TD.
In the embodiment the bale support 14.l, 14.r, 12.l.1, 12.l.2, 12.r.1, 12.r.2 being in the or one lateral bale depositing position is entirely positioned outside of the space between the chamber planes P.l, P.r and has therefore a lateral offset to the vertical center plane P of the baler 40. When a bale support 14.l, 14.r, 12.l.1, 12.l.2, 12.r.1, 12.r.2 is in the lateral bale depositing position, a lateral offset O.l, O.r between this bale support and the vertical center plane P occurs, cf.
In the embodiment every bale support 14.l, 14.r, 12.l.1, 12.l.2, 12.r.1, 12.r.2 can be pivoted with respect to the wrapper carrying device 13.l, 13.r about an angle of approx. 45 degrees between the centered bale receiving position and the or one lateral bale depositing position. It is possible that the bale support can be pivoted into one lateral bale depositing position which is selected out of a number of possible bale depositing positions. The piston-cylinder unit 2.l, 2.r pivots the bale support around the axis 9.l, 9.r about a selected pivoting angle. Different strokes yield different bale depositing positions.
It is possible that the wrapper carrying device 13.l, 13.r can be pivoted between an operating position and a transport position.
In the embodiment just mentioned left and right through-going arms 1.l, 10.l or 1.r, 10.r are formed. In a further embodiment the cantilever arm 10.l, 10.r and the wrapper carrying arm 3.l, 3.r can jointly or individually pivot with respect to the inner carrying arm 1.l, 1.r. The bale depositing position can automatically be selected depending on the weight of a bale on a bale support, of a bale in the bale forming chamber, or on the ground inclination, e.g. The piston-cylinder unit 2.l, 2.r can pivot the cantilever arm 10.l, 10.r together with the wrapper carrying arm 3.l, 3.r around the vertical pivoting axis through the pivot 9.l, 9.r.
In yet a further embodiment the inner arm 1.l, 1.r is pivotally connected with the connecting member 7.l, 7.r. Therefore it can pivot with respect to the baler 40 around a vertical pivoting axis 18.l, 18.r running through the connecting member 7.l, 7.r. The cantilever arm 10.l, 10.r is in the embodiment rigidly or pivotally connected with the inner carrying arm 1.l, 1.r. The piston-cylinder unit 2.l, 2.r can pivot the inner arm 1.l, 1.r, the cantilever arm 10.l, 10.r, and the wrapper carrying arm 3.l, 3.4 around the vertical pivoting axis 18.l, 18.r. This pivotal movement can be performed for pivoting the bale support 14.l, 14.r, 12.l.1, 12.l.2 into the or one bale depositing position or into the bale receiving position.
It is also possible that this pivotal movement is only performed for pivoting the arms 1.l, 1.r, 10.l, 10.r and the wrapper carrying arm 3.l, 3.r between an operating position (shown in
The left cantilever arm 10.l consists of three segments mounted in a sequence wherein two adjacent segments are angularly and rigidly connected with each other and have different heights over ground. The left wrapping ring 5.l, the left bale support and the left wrapper carrying arm 3.l are omitted in
In the embodiment of
As soon as or even before the further bale is readily formed and partially wrapped, the bale support of the other wrapper 8.r or 8.l is pivoted into the bale receiving position. The further bale is ejected out of the bale forming chamber Ch and rolls onto the bale support of the other wrapper 8.r, 8.1.
In one embodiment a bale is deposited as soon as the entire surface of this bale is wrapped into the required number of plastic film layers and the bale-wrapper combination reaches a suitable depositing location. In a further embodiment at least one cluster comprising two or even three wrapped bales is formed on the ground. The first bale is kept on the bale support of the first wrapper 8.l or 8.r until the further bale is radially wrapped by the other wrapper 8.r or 8.l. If the further bale is readily wrapped and the baler-wrapper combination reaches a suitable depositing location, both bales are deposited simultaneously on the ground.
Reference signs used in the claims will not limit the scope of the claimed invention. The term “comprises” does not exclude other elements or steps. The articles “a”, “an”, and “one” do not exclude a plurality of elements. Features specified in several depending claims may be combined in an advantageous manner.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2016907 | Jun 2016 | NL | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/NL2017/050354 | 6/1/2017 | WO | 00 |
