DE3313883A1 - Round baler for agricultural stalk material having a prechamber - Google Patents

Abstract

In a round baler for agricultural stalk material, a prechamber is formed by the inclined conveyor, a rear rigid wall and an adjustable wall which is arranged underneath the inclined conveyor. In normal operation, the adjustable wall extends parallel to the inclined conveyor. When the round bale is being wrapped, the adjustable wall is lowered and the agricultural stalk material then falls into the prechamber, the lower floor of which is then formed by the horizontally arranged wall. To empty the prechamber, the wall is pivoted out of its horizontal lower position back into the raised oblique position.

Description

PATENT ^{ATTORNEYS: ''} '::. Gadderbaumer street 20

rMiaNIMl \ vvML.ii_. _ _w _ D-4B0O BIELEFELD 1

DIPL-ING. BODO THlELKING

TELEPHONE: (05 21) 6 06 21 + 6 3313

DIPL.-ING. OTTO ELBERTZHAGEN _{TELEX: 932059 anwltd}

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POST CHECK ACCOUNT: HAN 3091 93-3O2 LAWYERS FILES: 13 073

Date: April 15, 19 83 k

Applicant: Claas OHG, Münsterstrasse 33, 4834 Harsewinkel 1

Round baler for agricultural stalks with antechamber

The invention relates to a round baler according to the preamble of claim 1.

In a known round baler of this type (DE-OS 27 40 2 29) an inclined conveyor is provided in connection with the receiving device, which transports the upwardly conveyed goods onto a horizontal one Conveyor belt drops. The horizontal conveyor belt ends in the feed opening for the press room. Above the horizontal conveyor belt there is a plate or a hold-down device, which is mounted so that it can pivot upwards about a rear horizontal axis is. When the baling room of the round baler is full and no more stalks can be fed in, this will be the horizontal conveyor belt is parked and the stalks are then only conveyed ... · still with the front Inclined conveyor in the initially small space below the swiveling plate and above the horizontal conveyor belt. at a further feed of the crop, the plate pivots with its front end upwards into an approximately vertical one Position. In this position the pantry has reached its greatest volume. After the finished round bale has been discharged the horizontal conveyor is switched on again so that the newly arriving crop and the stored in the storage chamber

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can promote stored crop in the Preßraura.

The known device has the major disadvantage that it is provided with two separately controlled conveyor devices must be, namely on the one hand with an inclined conveyor and on the other hand with a horizontal conveyor. The leadership of the Stalk flow is unfavorable because it is necessary to deflect the stalks before they reach the horizontal conveyor can. Because of this deflection, the known device tends to become clogged. Another major disadvantage is that that a proper emptying of the antechamber cannot be ensured with the known device. This has its The reason for this is that when the horizontal conveyor belt starts up, a quantity of material that cannot be precisely dosed is conveyed into the inlet gap, so that blockages are inevitable.

The invention is based on the object of designing a round baler of the known type in such a way that it is of simple construction and enables continuous, trouble-free operation, in particular operation without clogging.

This task is solved with the features of the marking part of claim 1.

When the subject of the application, it is advantageous that the Gutaufnahme only a single conveyor is connected downstream and that this conveyor can transport the flow of material without significant changes in direction. During the continue to run throughout the entire press. The provision of the adjustable wall, which can also be used as a grate, rake or the like can be designed, enables a safe and precisely controllable emptying of the storage chamber in the operating time which remains until the antechamber has to be loaded again because the round bale is finished.

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Preferred embodiments of the invention are set out in the subclaims described.

A preferred exemplary embodiment is explained in detail below with reference to the drawing. Show it:

Figure 1 - a schematic longitudinal section through the

Round baler,
Figure 2 - Details of the inclined conveyor in the area

of arrow II in Figure 1.

The round baler has a crop receptacle in a known manner 21 at the front end of the machine. The material picked up is conveyed via an inclined conveyor 1 along the line indicated by the arrow 2 2 The web is conveyed through the feed opening 3 into the press chamber 23. The press chamber 23 is circumferential in a known manner and rollers 24 arranged axially parallel to one another are enclosed.

Adjacent to the feed opening 3, an insertion point 25 is provided between two rollers through which sheet-like wrapping material 26 can get into the press room. The wrapping material is from a supply roll 20 with the help withdrawn by two take-off rollers 27. The wrapping material is preferably a net-like wrapping material / which is designed in such a way that, due to its network structure and the roughness of its material, it cannot be secured to the completely pressed round bale sticks. With such a material it is sufficient to press the finished round bale with only one to wrap around the web ends with a small overlap and it can then be deposited from the press room without further safety measures will.

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Below the inclined conveyor 1 is the antechamber 5, which is closed in the solid representation of Figure 1 by a changeable wall 4. In the undressed shown position according to Figure 1, the top of the wall 4 forms the abutment for the stalk that is with With the aid of the conveyor prongs 1 a is conveyed into the feed opening 3 or onto a guide plate 28 at the feed opening 3.

The. Wall 4 is between the inclined position shown in solid lines and the horizontal position shown in phantom Pivotable position.

The pivoting of the wall 4 is carried out with the aid of two arranged in pairs on both sides of the wall Handlebars 6 and 7. The front pair of arms 6 is shorter than the rear pair of arms 7. The lower ends of the pairs on the side arranged handlebars 6 are non-rotatably attached to a common pivot shaft 12. The lower ends of the handlebars 7 are welded to the pivot shaft 13. On the pivot shaft 12, the crank arm 14 is also secured against rotation while on the pivot shaft 13 of the crank arm 15 is secured against rotation. The free ends of the crank arms 14 and 15 are on one common piston rod 16 or their extension hinged. The piston rod 16 forms part of a hydraulic. Piston-cylinder unit 17.

With the piston-cylinder unit 17, the pivot shafts 12 and 13 can be pivoted with the pairs of links attached to them will. The upper ends 6b and 7b are held in sliding guides 8 and 9, which are fastened to the wall 4. At a Pivoting the pivot shafts and thus the link pairs migrate to the upper ends 6b and 7b on the dash-dotted line arcs shown and move at the same time within the sliding guides 8 and 9. The pivoting movement can be carefully controlled. For example, after a rapid and continuous lowering, a gradual subsequent lifting to empty the antechamber can be carried out.

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Another guide of the wall 4 is provided at the rear end 4a. The rear end 4a, which sliding or rolling body can carry, runs in a rear, stationary sliding guide 10, which extends obliquely downward. These Sliding guide 10 is provided on the rearward stationary boundary 11 of the prechamber 5.

As soon as the round bale is finished and the wrapping begins with the wrapping material 26, no more crops should get into the baling chamber 23 .. It then takes place a lowering of the adjustable wall 4 from the position shown in solid lines into the position shown in dash-dotted lines Position according to Figure 1. The conveyed crop can then no longer from the inclined conveyor 1 or from its prongs to Gleitbiech 28 are promoted, but is automatically thrown into the open storage chamber.

So that the harvested crop does not hang on the tines 1a remains, a device for pivoting the prongs 1a is provided, which is shown in more detail in FIG.

The prongs 1a of the inclined conveyor 1 are at right angles outgoing arm 1b provided, 'which carries rollers at its rear end 1c. The roles are in a guide trough 1e led. The drive designed as an angle lever Prongs are carried out in the usual way by means of chains, belts or the like at the pivot point 1f of the angle lever.

The guide channel 1e for the rollers 1c has only one stationary wall in the inclined lower area, namely the lower wall Ig. The further limitation 1h is designed to be variable in position. When the delimitation bar 1h moves from the position shown in solid lines in FIG. 2 into the dashed position 1h ¹ , the prongs 1a can fall from the swivel position shown in solid lines into the vertical position shown in dash-dotted lines.

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The delimitation bar 1h is adjusted with the aid of an adjusting cylinder 31. The piston rod of the adjusting cylinder 31 is connected to one end of a lever 32 which is fixedly mounted on one side. Approximately in the middle between the point of articulation the piston rod 31a and the fixed pivot point 33 is an actuating rod 34 articulated, which in turn with an angle lever 35 is articulated. The angle lever

35 is rotatably mounted in its fixed apex. At the rear end of the bell crank engages in an articulated manner on a flange

36, which is firmly connected to the delimitation bar 1h. The construction described is in each case for all prongs 1 a equally trained. When the actuating cylinder 31 is actuated, the limiting strip 1h migrates upwards and the prongs 1a are pivoted. The reset takes place in reverse order. At the transition between the movably mounted limiting bar 1h and the stationary continuation of this delimitation bar, a transition area is provided which is not shown. Instead of training in a contiguous area, all walls and boundaries can be on the perimeter the antechamber also have openings, for example be designed in a row-like manner.

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Claims (9)

Patent claims: 1. Round baler for agricultural stalks, with a feed opening into the press room and with an antechamber, which is of stationary side walls, as well is formed by a wall or the like adjustable between these side walls and a conveyor, characterized in that the conveyor is an inclined conveyor (1) from the crop pick-up (2) rises obliquely up to the feed opening (3) arranged in the front upper area, and that the adjustable wall (4) or the like is arranged below the inclined conveyor (1) and is in raised position extends at least substantially parallel to the inclined conveyor (1) and the antechamber (5) against Shuts off the entry of the stalks and in a lowered position to form the lower boundary of the antechamber (5) extends at least substantially horizontally, and that between the stationary side walls a stationary rear limitation (11) of the antechamber is arranged. 2. Round baler according to claim 1, characterized that the adjustable wall (4) or the like is guided on lateral pairs of links (6, 7) is. 3. Round baler according to claim 1 and 2, characterized in that the links (6; 7) each with one end (6a; 7a) mounted stationary and with the other end (6b; 7b) parallel to the adjustable COPY 073 - 2 - April 15, 1983 k ble wall (4) extending sliding guides (8; 9) are mounted on the wall (4), the wall (4) with its rear end (4a) is guided in a rear stationary sliding guide (10). 4. Round baler according to claims 1 to 3, characterized characterized in that the sliding guide on the rear stationary boundary (11) of the antechamber (5) is provided. 5. The device according to one or more of claims 1 to 3, characterized in that the together aligned stationary ends (6a; 7a) of the links (6; 7) each on a common pivot shaft (12; 13) attached and that both pivot shafts (12; 13) over a crank arm (14; 15) attached to it and a common adjusting device (16; 17) are pivotable. 6. Round baler according to one or more of the claims 1 to 5, characterized in that the adjusting device consists of a hydraulic piston-cylinder unit (17) is formed with piston rod (16). 7. Round baler according to one or more of the claims 1 to 6, characterized in that the inclined conveyor (1) is equipped with conveyor tines (1a) is that the stalks with raised wall (4) between the underside of the inclined conveyor and the adjustable wall (4) take it up at an angle. 8. Round baler according to one or more of claims 1 to 7, characterized in that that the conveyor tines are designed to be adjustable in inclination. 9. Round baler according to one or more of the claims 1 to 8, characterized in that adjacent to the feed opening (3) the entry point for BAD ORIGINAL _COpy ³ 073-3-15 April 19 83 is reticulated, web-like wrapping material which is pulled off a supply roll (20). COPY