HU194010B - Baling press for agricultural produce - Google Patents

Abstract

In the roll baler the baling chamber (1) is defined by rotating feed rollers (10) and comprises an antechamber (19). A first conveying mechanism is provided for conveying harvested material into the antechamber, and a second conveying mechanism for conveying the harvested material from the antechamber through a feed gap between adjacent rollers into the baling chamber. - The second feed mechanism comprises a conveying drum which is arranged axially parallel to the feed rollers to an opposing abutment by overcoming the recoil force of a restoring element. The conveying drum (25) has conveying blades which at the rear region of the drum, facing the feed gap, lie adjacent to the outer surface of the drum.

Description

BACKGROUND OF THE INVENTION The present invention relates to a baler for agricultural produce with a baling space surrounded by conveying conveyor elements, a pre-chamber, a conveyor for conveying the crop to the pre-chamber and a second conveyor for introducing the crop from the pre-chamber into the baling chamber.

Such baling presses, as described in the introduction, are known in various embodiments. The function of the prefabricated baler presses is to ensure continuous operation. While the finished bale is wrapped in wrapping material, the inlet to the baling chamber must be stopped. During the packing, the fruit picked up by the pick-up drum collects in the front chamber. The wrapped bale is thrown backwards, whereupon the delivery of the crop through the inlet gap to the baling chamber resumes. Therefore, the appropriate conveying equipment must be designed and operated in such a way that it conveys both the crop stored in the pre-chamber and the freshly introduced crop into the baling chamber through the inlet slot.

German Patent Publication No. 2 74 299 discloses a baling press in which a horizontal conveyor belt is used as a conveyor. However, the horizontal conveyor belt has proved inadequate in practice, as it cannot deliver the stored crop in the front chamber quickly and safely. However, you can deliver the freshly delivered crop to the baling area. This solution has the disadvantage that the pre-chamber cannot be completely emptied between the two emptying of the baling chamber. As a result, the storage capacity of the foreground cannot be utilized and thus, despite the availability of a suitable foreground, continuous operation cannot be ensured.

In another older application, it has been proposed that the storage space and the pre-chamber be conveyor and press rolls with a variable position, which are rotatable.

Aside from the fact that such a construction requires a great deal of technical effort to build a storage space of the appropriate size, it also has the disadvantage that it cannot provide perfect transport of the crop stored in the pre-chamber through the inlet to the baling chamber.

Based on this state of the art, it is an object of the present invention to provide a baling press as mentioned in the introduction, whereby uniform and reliable emptying of the pre-chamber and secure closure of the baling chamber is possible.

According to the present invention, the object is solved by providing the second conveyor with a conveyor drum having an axis parallel to the conveyor rollers and which can be displaced along a defined path relative to the opposing counterweight.

Preferred embodiments of the invention are set forth in the dependent claims.

In the embodiment of the invention, the transport drum provides a uniform and smooth emptying of the forepeak after the storage process. This is essentially provided by the conveyors, which are ineffective on their backside, i.e. the side facing the bale chamber, while in the other regions they protrude from the tubular drum and transport the crop. By transferring the conveyors, which are preferably conveying pins on the backside, either to the drum or to the surface of the drum, the material is completely released into the compression space. Limiting the adjustment drum path of the conveyor drum means that too large a quantity of crop leading to a blockage cannot enter the baling space through the inlet slot. The use of a restoring element, preferably a spring, ensures that the conveyor drum is placed with sufficient force on the crop or on the opposing bed. This counter bed may be a fixed plate or a rotating member such as a drum.

The invention will now be described in detail with reference to the drawings, in which: Figure 1 is a partially cut away schematic side view of the baler according to the invention, Figure 2 is a partial sectional view of another embodiment of the baler side view.

The two side baler presses according to the invention have a front part (7) in a fixed position and a rear part (8) which can be moved in the direction of the double arrow (9). The rear housing part (8) can be tilted to eject the bales (23).

The baling space (1) is defined by circularly arranged axially parallel conveyor rollers (10) which leave a leading slot (5) on their front side through which the crop (2) enters the baling space.

The crop (2) is picked up from the ground by a pick-up drum (3) and brought into the range of action of the drum (4). The crop (6) is conveyed in the direction of an arrow (25) by a conveyor drum (5) into the baling space (1). In the embodiment of Fig. 1, the guide plate (27) is formed as a pivotable portion (17) in the front region of the guide plate, to which a smooth surface cylinder opposite the conveyor flange (25) is connected. In this embodiment, the guide plate portion (27) behind the cylinder (26) is configured as a fixed guide plate portion. In contrast, in the embodiment of Figures 2 and 3, where the cylinder (26) is completely missing, the guide plate (27) reaches either the lower end of the pre-chamber (19) or, optionally, the existing tilting portion (17).

The pre-chamber (19) is open at the top. The front wall of the pre-chamber (20) can be tilted forwards and backwards about a horizontal axis by means of an adjusting member (18).

Above the inlet slot (5) there is an access point (24) through which cover material (12) enters the baling chamber (1) when the bale (23) is complete. The cover material (12) is a storage drum (11) which is pivotally mounted on supports (16) above the round baler. The cover material (12) passes through a counting mechanism (13) in the direction (14) and through a separating device (15) and then an access point (24) to an almost finished bale. As soon as the front end of the cover material reaches the inlet portion (5), the crop inlet (2) stops, so that the end of the cover material in the region of the entry point (24) is not overlapped by the cover end separated by the release device (15). The finished bundled and wrapped bale is then discarded as soon as the rear housing part (8) is tipped by the actuating roller (21).

2 and 3, the transport drum 25 and its drive are shown in more detail. The conveyor drum (25) has a tubular drum (36) having perforations (38) formed in its circumference. The pins (38) extend outwardly through the pins (38). The conveyor pins (37) are mounted at their inner ends on a fixed pivot (39) allowing free rotation of the conveyor pins (37).

The bearing location (34) of the drum (36) is offset with respect to the swivel (2494.010) shaft (39). The bearing seat 34 carries a drive wheel firmly connected to the drum 36 which rotates with the drum 36 through a drive chain 35. The drive chain (35) is driven by the adjacent conveyor (10).

The pivot arm (28) can be pivoted about the pivot axis (10a) of the transport roller (10). The tipping arm carries a pin (29) which is guided in a longitudinal opening (30). The ends of its longitudinal opening serve as a stop for the pivoting lever 281 and define its path. The longitudinal opening (30) is in a holder (31) which is pivotable about the pivot axis 32. The pivoting arm (33) is held by a tension spring Pull the transport drum towards the guide plate (27).

In Figure 3, both possible end positions of the drum (36) are shown once in dashed lines and once in dotted lines. The distance between the guide plate (27) and the opposed surfaces of the drum (36), in its most extended outward position, is less than the width of the inlet slot (5).

As a rotation of the drum (36) driven by the safety chain (35), the conveying pins (37) rotate about the pivot axis (39) and define a circle (40) with their ends. The conveying pins (37) are driven by the drum (36) which, by means of the punctures (38), conveys the conveying pins (37) in a rotational direction.

The pre-chamber is closed by stopping the drum (36) in the position shown in Figures 2 and 3, whereby adjacent conveyor pins (37) extending in the direction of the guide plate (27) serve as a stop.

Claims (9)

PATENT CLAIMS 1. A baling press for an agricultural crop, with a baling space, a pre-chamber, a conveyor for conveying the crop to a pre-chamber and a second conveying device for introducing the crop from the pre-chamber to the second, the conveyor having a conveyor drum (25) having a parallel axis with conveyor cylinders (10) and disposed along a defined path relative to the force of a tension spring (33) relative to the opposed ridge (26, 27). The baling press according to claim 1, characterized in that the counter bed (27) extends into the inlet slot (5). 10 Bale press according to any one of claims 1 to 2, characterized in that the conveyor is formed by conveying pins (37) arranged in rows parallel to the longitudinal axis. 4. A baling press according to any one of claims 1 to 4, characterized in that, when the wrapping drum 5 (25) is closed, the conveying slot (5) is lattice-closed by a series of conveying pins (37). 5. A baling press according to any one of claims 1 to 4, characterized in that the conveying pins (5) are arranged in a spiral line on the drum jacket. jq 6. A baling press according to any one of claims 1 to 5, characterized in that the conveying pins (37) extend from the tubular drum (26) through the perforations (38) and offset from the inner position of the drum (36) at the inner end when the tubular drum (36) is rotated through the perforations. - and they are moving inward 25 placed. A baling press according to claim 6, wherein 1, wherein the conveyor pins (37) are pivotally mounted at their inner ends on a pivot axis (39) offset from the axis of rotation of the drum (36). 8. Bale press according to any one of claims 1 to 3, characterized in that the conveying pins (37) are pivotally mounted on an axis parallel to the axis of rotation of the drum (36) and lie in the rear region on the outer surface of the drum. 9- 1-8. Bale press according to any one of claims 1 to 3, characterized in that the displacement path of the conveyor drum (25) is smaller or at most than the width of the inlet portion (5).