DE4301636C2 - Cutter for agricultural harvesters - Google Patents

Description

The invention relates to a cutting device for agricultural harvesters, such as balers or Loading wagon, with a conveyor channel, which is supported by a receiving element, preferably a pickup, straw crop is fed and into the height-adjustable cutting knives from below and with them Cutting knives interacting, the stalks through the Cutting knife for shredding-promoting tines of a rotor protrude from above.

In such, in practice known cutting units, such as. B. from DE 35 10 716 A1, AT-PS 303 536 and DE 34 45 015 C2 is known Constipation or a stronger compression of the stalks in the inlet area of the conveyor channel due to the large Flat conveyor floor with a friction surface is not excluded, which is particularly the case with damp or wet Culm crop occurs and places a heavy burden on the Rotor tines and the subsequent cutting process impaired.

The object of the invention is therefore one after the beginning mentioned type built cutting unit in the inlet area of his Conveyor channel and conveyor floor with a static friction to provide the stalk-reducing arrangement.

This object is achieved in that on the Conveyor floor of the conveying channel in the crop inlet area between the cutting blades in the conveying direction Bridges are defined as sliding pads for the straw.  

Design features are listed in the subclaims, what advantageous and beneficial further training of the Represent task solution.

In the cutting device according to the invention, the conveyor floor of the Conveyor channel with a greater distance than usual to the promoting rotor tines arranged and still a good one Cutting quality can be achieved on the conveyor floor in the Inlet area bridges attached to the stalks Give sliding pad. The stalk material applied to the webs is caught by the rotor tines, then slides on the webs and is fed to the cutting knives without interference.

This will prevent the rotor tines from penetrating into the Culm mat considerably facilitated and the static friction of the Crop stalks on the jetties are significantly smaller than those on conventional flat conveyor floors.

Also, these are web-shaped sliding pads in damp or Wet stalks are advantageous because of the sliding effect Baking together (carding) the stalks and thus a Clogging in the delivery channel is excluded.

The webs are simple and inexpensive Rectangular bars formed by the conveyor floor Welding are simply set.

The webs running in the direction of conveyance begin on Inlet start and end where the stalks the cutting knives has happened, i.e. approximately vertically below the center of the rotor.

In the drawing is an embodiment of the invention shown, which is explained in more detail below. It shows

Fig. 1 is a side view of a conveying channel of lower cutting blades and upper rotating conveying tines cutting unit formed with stalk material-sliding webs on the conveyor bottom of the conveying channel set,

Fig. 2 is a schematic plan view of a part of the cutting unit with a conveyor floor, webs, cutting knives and conveyor tines.

The cutting device for agricultural harvesting machines, such as round balers, square balers or loading wagons, has a conveying channel ( 1 ) to which crop material is fed by a receiving member ( 2 ), preferably a pickup. In this conveyor channel ( 1 ) protrude from below vertically pivotable cutting knives ( 3 ) and from above with these cutting knives ( 3 ) interacting, the stalks through the cutting knives ( 3 ) for comminution promoting tines ( 4 a) of a rotor ( 4 ).

On the conveying base ( 5 ) of the conveying channel ( 1 ), webs ( 6 ) extending in the crop material inlet area (EB) between the cutting knives ( 3 ) in the conveying direction (F) are fixed as sliding supports for the crop material.

The cutting knives ( 3 ) are arranged in the same distance from each other in a row on the width of the conveying channel ( 1 ) and each cutting knife ( 3 ) is assigned a pair of rotor disks ( 4 b), each with a plurality of conveying tines ( 4 a), the two rotor discs (4 b) of each pair on both sides of the cutting blade (3) overlap the cutting knives (3), as shown in Fig. 2 can be clearly seen.

The webs ( 6 ) have a rectangular, upright cross section and extend from the start of the inlet (EA) of the conveyor floor ( 5 ) to approximately the vertical (S) extending through the rotor axis of rotation ( 4 c).

The webs ( 6 ) at the start of the inlet (EA) on the front and top corner of the web have an inlet fillet ( 6 a) and / or bevel which enables a slight crop entry. The webs ( 6 ) run with their upper longitudinal edge ( 6 b), which is formed by the narrow side of the rectangle, in a horizontal plane. The webs ( 6 ) are attached to the conveyor floor ( 5 ) by welding.

As can be seen from Fig. 2, a web ( 6 ) is attached to the conveyor floor ( 5 ) between each pair of conveyor disks.

The cutting knives ( 3 ) are held interchangeably in their pivot axis ( 7 ) on a frame ( 8 ) carrying the conveyor floor ( 5 ) and are pivoted upwards into the working position by means of a resilient mechanical device ( 9 ) and optionally pivoted downwards into the non-functional position and can be pivoted at Swing in the entry of foreign objects automatically downwards and then swivel them back up into the working position.

The crop is collected by the pickup ( 2 ) and placed on the webs ( 6 ) of the conveyor floor ( 5 ). The rotating conveying tines (4 a) engage the Halmmatte and move the straw material by the cutting blade (3), where it to the desired size - depending on the number of the upwardly pivoted into the working position the cutting knife (3) - crushed and then in the conveying channel (5 ) is further conveyed to the pressing device or on the loading wagon.

( 10 ) denotes a blade wiper associated with the rotor ( 4 ).

As can be seen from Fig. 1, the tips of the conveyor tines ( 4 a) coincide with their turning circle with the upper edge ( 6 b) of the webs ( 6 ) and here the conveyor floor ( 5 ) is at a preferred height to the conveyor tines ( 4 a ) set.

The conveyor floor ( 5 ) can be adjusted in height relative to the conveyor tines ( 4 a), so that they can also reach more or less far between the webs ( 6 ).

Claims (8)

1. Cutting device for agricultural harvesting machines, with a conveying channel, which is supplied with straw material from a receiving member, preferably a pickup, and into the height-pivotable cutting blade from below and cooperating with these cutting blades, the straw material through the cutting blades for comminution promoting tines of a rotor from above protrude, characterized in that on the conveyor base ( 5 ) of the conveyor channel ( 1 ) in the culm inlet area (EB) between the cutting blades ( 3 ) in the conveying direction (F) webs ( 6 ) are fixed as sliding supports for the culm. 2. Cutting device according to claim 1, characterized in that the webs ( 6 ) have a rectangular, upright cross section. 3. Cutting device according to claim 1 or 2, characterized in that the webs ( 6 ) extend from the inlet start (EA) of the conveyor floor ( 5 ) up to approximately through the rotor axis of rotation ( 4 c) extending perpendicular (S). 4. Cutting device according to one of claims 1 to 3, characterized in that the webs ( 6 ) at the start of the inlet (EA) at the front and upper web corner have an inlet fillet ( 6 a) and / or bevel. 5. Cutting device according to one of claims 1 to 4, characterized in that the webs ( 6 ) are fixed by welding on the conveyor floor ( 5 ). 6. Cutting device according to one of claims 1 to 5, characterized in that the webs ( 6 ) with their upper, the stalk material sliding support forming longitudinal edge ( 6 b) of the narrower rectangular extent extend in a horizontal plane. 7. Cutting device according to one of claims 1 to 6, characterized in that the tines ( 4 a) of two adjacent rotor disks ( 4 b) overlap as a conveyor disk pair a cutting knife ( 3 ) and between each pair of rotor disks a web ( 6 ) on the conveyor floor ( 5 ) is attached. 8. Cutting device according to one of claims 1 to 7, characterized in that the conveyor base ( 5 ) relative to the conveyor tines ( 4 a) of the rotor ( 4 ) is adjustable in height.