DE3415310A1 - Round-bale press - Google Patents

Abstract

The round-bale press has a pick-up device for the continuous picking up of agricultural crop which is introduced into a prechamber provided with a plurality of rollers. The prechamber is followed by a rolling chamber separated from the prechamber by a plurality of rotatable rollers which are displaceable out of their working position into the position of rest, in which they open a passage from the prechamber to the rolling chamber. <IMAGE>

Description

The invention relates to a round baler with a

Pick-up device for continuously picking up agricultural produce Crop and its feed into an antechamber, which has a large number of rotatable press rollers to form a pre-bale, with an adjoining rolling chamber, which have a plurality of rotatable along their substantially circular circumference arranged press rollers for completing the round bale, the rear Part of the roll chamber can be opened for ejecting the finished roll bale and with it a binding device for the round bale.

Round balers offer the highest level of harvesting Economic efficiency with labor-saving work relief. In particular for Pressing hay, straw and wilting hay for silage production are suitable Round balers, as they allow a high compression density, which is essential for the fermentation process is ideal.

With such round balers, the crop is picked up from above and compressed through an inlet opening during the collection trip, after which it is through a binding device tied and in the form of round cylindrical bales through an outlet opening is released, so that it is particularly where the existing Silo space is insufficient or where Forage surplus is to be recovered or where smaller crops have to be preserved at short notice, simply Way can be stored.

Round balers that are only equipped with one baling chamber, still have the disadvantage that the forward travel of the press is temporarily interrupted must be, provided the bale has been rolled ready to tie it and then eject, since no further crop pick-up during these operations is possible.

Usually, however, the time required for tying and 50% and more of the total time is required to unload the finished roll bales, which is required for the actual process of forming the round bale. It is already known from US Pat. No. 3,004,377 to increase the operating speed a round baler to provide this with an auxiliary conveyor to the and collect picked up crops in an endless path on the machine, however outside the bale chamber, to circulate while the bale is wrapped and is expelled. After the finished round bale has been ejected, the temporarily stored Crop in the baling chamber back together with new crop picked up from the ground can be fed in to form the next round bale.

However, this round baler still has the disadvantage that it due to the long-lasting circulation of the circulating on the auxiliary conveyor Cached crop during the strapping and ejection process of the The finished round bale results in considerable leaf loss, as the temporarily stored The crop has been in contact with the mechanical vibrating devices of the press for too long stands. Another disadvantage is that the auxiliary conveyor the round baler can collect more crops than it can to form one Round bale is required, which requires a further hold around the To empty auxiliary conveyor.

DE-OS 31 51 580 discloses a process for continuous production of round bales in a round baler known, the actual bale chamber a storage space is assigned, the land of the pressing chamber and the storage space from each other separating wall part part of a three-legged, additional conveying element bearing rotating star. After completing the round bale in the baling chamber the rear housing is raised, while at the same time the axis of the rotary star rotated synchronously with the housing and thus pivoted the legs of the rotary star will. In this position the additional storage space is open and now takes the incoming crop flow on. During this movement phase and then, the bale is tied by the tying device with twine, after which the turntable is pivoted again.

This causes the bale to roll onto the ground during the previous one in the storage room accumulated crop through one of the legs or the conveyor elements attached to it is pivoted into the press room, after which all elements in their initial position return and a new storage space through two other legs of the rotating star is formed below the actual bale chamber.

Such a round baler requires a considerable amount of construction Effort for the rotary star with the additional, driven conveyor elements his three thighs.

Furthermore, a considerable amount of force is required to finish to lift the wrapped round bale before it can be tied up and expelled. The initiation of the strapping process in the position of the raised center of gravity Roll balling is problematic as this involves both the rollers of the fixed part the compression chamber and the pivotable part of the compression chamber the yarn guide arms stand in the way.

The object of the present invention is to provide a robust, simple constructed, cheaper to manufacture, compact round baler to create, with the continuously high-density without loss of time by stopping Round bales can be produced.

Based on a round baler of the type mentioned in more detail at the beginning Art is proposed to solve this problem that a large part of the along the Arranged circumference of the fixed part of the rolling chamber and this from the antechamber separating rollers can be moved from their working position to a rest position, in which they open a passage from the antechamber to the rolling chamber.

Advantageously, the ends of the axes of the displaceable Rolls a substantially circular segment-shaped slot in the side walls of the Rolling chamber, which lies on the circle formed by all the rollers, with the circular segment-shaped slot is followed by a step-shaped guide slot.

Preferably the bottom two of the sliding rollers are from held a rotatable swivel arm, with the remaining movable rollers on Link arms are articulated, which are articulated to the pivot arm.

The two rollers held by the swivel arm can after of their Maximum shift the point of two others in the stepped guide slot occupy shifted rollers.

It is particularly favorable if the step-shaped guide slot runs above part of the fixed rollers.

In a further advantageous embodiment, the bearings of the Swivel arm in the side walls of the rolling chamber essentially on its axis.

The lowest roller of the closest to the pick-up device Pre-chamber is preferably freely rotatable, this roller also having longitudinal ribs can be provided.

Advantageously, all the rollers of the antechamber are in this way on the side walls the prechamber stored that their common axis of rotation outside of the pressing chamber of the Antechamber lies.

It is particularly favorable if the entire antechamber is about its axis of rotation is pivotable by at least 900.

With the round baler according to the invention, the advantage is achieved that only a small construction effort is required, that through the Arrangement of the antechamber directly above the pick-up device only a small one Overall length is required that only a small effort for pivoting the antechamber and the shifting of the press rolls separating the rolling chamber from the antechamber is required and that after moving there is enough space for the yarn guide arms is available for tying the completely wrapped round bale.

In the following the invention is explained in more detail with reference to the drawing, in which an advantageous embodiment is shown. They show: FIG. 1 a longitudinal section through a round baler according to the invention after delivery of the Foreballs; FIG. 2 shows a longitudinal section through the machine with a completely rolled round bale; Figure 3 shows a longitudinal section through the machine when ejecting the round bale and FIG. 4 shows a longitudinal section through the machine at the time of the transfer of the pre-bale.

The round baler shown in the figures has an antechamber 1 and a roll chamber 2, which is connected to the antechamber. The antechamber 1 is provided above a pick-up device 3 which is provided with gripping prongs 4 is and the harvested crop through a feed gap 5 into the antechamber leads, because at the beginning of the work, the rolling chamber 2 is closed for the crop is (Figure 2). The antechamber 1 has a plurality of along its upper half driven rollers 7, 8, which by a schematically designated 10 drive device 1 for example a chain, can be set in rotation to form a prebale. The power is transmitted through a gearbox 6, which is not connected to the PTO shaft shown tractor is connected.

The foremost lowermost roller 11 in the antechamber is freely rotatable and can have longitudinal ribs on the surface arranged parallel to its axis be provided.

The antechamber 1 cooperates with several inlet rollers, which are below of the feed gap 5 are provided.

The actual rolling chamber 2 for forming a round bale is separated from the antechamber 1 by several rollers 13, 14, 16, the lowest both the roll chamber 2 of the pre-chamber 1 separating rollers 13, 14 are rotatably mounted on a swivel arm 12. The pivot arm 12 is about an axis of rotation 15, which coincides with the axis of the cylindrical rolling chamber 2, for example.

On the rollers 13, 14 are further rollers 16, 17, 18 via articulated connections 19, 20, 21 articulated, the axes of the rollers 13, 14, 16, 17, 18 being circular Pass through the slot 22 in the side wall of the rolling chamber 2. At the circular Slot 22 is followed by a step-shaped guide slot 23 which is located above the rolling chamber 2 extends. By a suitable, not shown, e.g.

hydraulic drive, the swivel arm 12 can be swiveled about its axis 15 so that the two rollers 13, 14 mounted on it together with the rollers on these Rollers hinged rollers 16, 17, 18 from their working position shown in Figure 2 can be moved into a rest position shown in Figure 4.

The circular slot 22 and the stepped guide slot 24 are provided on the fixed part of the rolling chamber 2, the rear half of which 24 together with the driven rollers 25, 26, 27 attached to it pivoted upwards can be used to eject a completely rolled and tied round bale (Figure 3).

The operation of the round baler according to the invention is as follows: At the beginning of their work, the roll chamber 2 is through with the swivel arm 12 connected bottom roller 13, 14 closed for the incoming crop. This is entered from the pick-up device 3 into the antechamber 1, the rollers of which 7, 8 are driven so that the formation of a prebale begins.

(Figure 2). If the pre-ball is fully formed in the antechamber 1, so the roll chamber 2 is opened by the fact that the pivot arm 12 about its axis of rotation 15 is pivoted upwards and thereby the rollers 13, 14 and attached to it the rollers 16, 17, 18 articulated to it along the circular guide slot 22 and the adjoining step-shaped guide slot 23 moves (Figure 4).

The antechamber 1 including its upper driven rollers 7,8 ... can are now pivoted about an axis of rotation 9 common to the rollers, namely together with the side walls of the antechamber. As a result, as shown in FIG is, the pre-ball is given through the resulting opening in the roll chamber 2 and without much effort due to gravity. After entering the forebale The rollers 13, 14, 16, 17, 18 are in the rolling chamber 2 along their guide slots lowered again (Figure 1), however only so far that the now from of the pick-up device 3 picked up crop flow through the intake gap 5 in the rolling chamber 2 arrives, so that a round bale corresponding to the size of the rolling chamber 2 can be trained.

After completion of the round bale in the rolling chamber 2, this is tied around by the binding device indicated schematically with 28 (Figure 2), after which the roll chamber 2 is opened by pivoting its rear half 24 (FIG 3) and the completely rolled round bale is ejected.

The swivel arm 12 is already complete when the binding process is initiated the hinged rollers are lowered so far that access to the rolling chamber 2 is closed for the crop and this is directed into the antechamber, where the Formation of a new forebale begins.

By pivoting the rollers 13, 14 of the rolling chamber centrally 2 a circular rolling chamber is guaranteed at all times. Arranging the antechamber 1 above the pick-up device 3 enables a compact design of the round baler. The arrangement of the pivot bearing for the antechamber 1 outside the antechamber enables that the major part of the side walls of this antechamber pivoted with the rollers can be. So there are none Slots in the antechamber necessary.

A continuous intake of crop is due to the alternating Operation of the prechamber 1 and the rolling chamber 2 guaranteed, the structural Compared to conventional round balers, effort is considerably reduced.

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Claims (10)

and baler claims 1. Round baler with a pick-up device for the continuous intake of agricultural crops and their supply into an antechamber which contains a plurality of rotatable rollers for forming a prebale has and with an adjoining roll chamber that has a plurality of rotatably arranged along their substantially circular circumference rollers to complete the round bale, the rear part of the rolling chamber can be opened to eject the finished roll bale and with a binding device for the round bale, characterized in that a large part of the along the circumference the fixed part of the rolling chamber (2) and this from the antechamber (1) separating rollers (13, 14, 16, 17, 18) from their working position are displaceable into a rest position in which they have a passage from the antechamber release to the roll chamber. 2. Round baler according to claim 1, characterized in that the Ends of the axes of the displaceable rollers (13, 14, 16, 17, 18) essentially Pass through a circular segment-shaped slot (22) in the side walls of the rolling chamber (2), which lies on the circle formed by all the rollers and that on the circle segment-shaped Slot (22) is followed by a step-shaped guide slot (23). 3. Round baler according to claim 2, characterized in that the step-shaped guide slot (23) above part of the fixed Rolls (25, 26) runs. 4. Round baler according to one of claims 1 to 3, characterized in that that the lowermost two rollers (13, 14) of the displaceable rollers of one rotatable Swivel arm (12) are held, and that the remaining displaceable rollers (16, 17, 18) are articulated on connecting arms (19, 20, 21), which with the swivel arm (12) are articulated. 5. Round baler according to one of the preceding claims, characterized characterized in that the two rollers (13, 14) after its maximum shift into the rest position, the place of two others rollers (17, 18) shifted into the stepped guide slot (23) take in. 6. Round baler according to one of the preceding claims, characterized characterized in that the pivot axis (15) of the pivot arm (12) in the side walls the rolling chamber (2) lies essentially on its axis. 7. Round baler according to one of the preceding claims, characterized characterized in that the lowermost roller is closest to the feed gap (5) (11) the antechamber (1) is freely rotatable. 8. Round baler according to claim 7, characterized in that the Roller (9) is provided with longitudinal ribs along its surface. 9. Round baler according to one of the preceding claims, characterized characterized in that all the rollers of the antechamber in such a way on the side walls of the antechamber are mounted that their common axis of rotation (9) outside of the pressing space of the antechamber (1) lies. 10. Round baler according to one of the preceding claims, characterized characterized in that the antechamber (1) can be pivoted by at least 900 about its axis of rotation (9) is.