DE1062049B

DE1062049B - Calculating wheel

Info

Publication number: DE1062049B
Application number: DEL27310A
Authority: DE
Inventors: Cornelis Van Der Lely; Ary Van Der Lely
Original assignee: C Van der Lely NV
Current assignee: C Van der Lely NV
Priority date: 1956-04-05
Filing date: 1957-04-04
Publication date: 1959-07-23

Description

DEUTSCHESGERMAN

Die Erfindung bezieht sich auf ein Rechenrad für ein Gerät zum seitlichen Versetzen am Boden liegenden Ernteguts, z. B. von Heu, Gras od. dgl., das am Radumfang mit nachgiebigen Zinken versehen ist, die von an einem Mittelteil des Rechenrades befestigten Drähten od. dgl. gebildet werden. Die bekannten Rechenräder haben im allgemeinen eine Felge, außerhalb der die nachgiebigen Zinken angeordnet sind. Es sind auch Rechenräder bekannt, die keine Felge haben, sondern aus nur wenigen, in verhältnismäßig großem Abstand voneinander angeordneten, sich bis zur Radnabe erstreckenden Drähten bestehen, die nur in der Nähe der Nabe miteinander verbunden sind.The invention relates to a calculating wheel for a device for lateral displacement lying on the ground Crop, e.g. B. od hay, grass of wires attached to a central part of the calculating wheel or the like. Are formed. The known Calculating wheels generally have a rim outside which the flexible prongs are arranged. It Calculating wheels are also known that have no rim, but only a few, in proportion There are wires that are arranged at a large distance from one another and extend to the wheel hub, which only connected to each other near the hub.

Die Erfindung bezweckt die Herstellung eines Rechenrades mit sehr großer Nachgiebigkeit, so daß die Drähte praktisch unabhängig voneinander senkrecht zur Radebene ausweichen können und trotzdem das Rechenrad einen genügenden Zusammenhang behält.The invention aims to produce a calculating wheel with very great flexibility, so that the wires can evade practically independently of each other perpendicular to the wheel plane and still the calculating wheel maintains a sufficient connection.

Gemäß der Erfindung besteht die gesamte mit dem Erntegut in Berührung kommende Fläche des Rechenrades aus Federstahlstäben, die derart gegeneinander beweglich miteinander verbunden sind, daß eine Felge oder ein ähnliches konzentrisch zur Rechenradachse angeordnetes Organ entfallen kann. Die gegeneinander bewegliche Verbindung der Federstahlstäbe kann verschieden ausgeführt sein, beispielsweise können einige Stäbe mit ösenartigen Umbiegungen versehen sein, durch die andere Stäbe geführt werden, oder die Stäbe können mit Abbiegungen ineinandergehakt sein. Die Enden der Stäbe bilden die Zinken. Die Rechenräder gemäß der Erfindung eignen sich besonders als durch Berührung mit dem Boden bzw. dem Erntegut in Drehung versetzte Rechenräder für Seitenrechen oder dergleichen Geräte.According to the invention, there is the entire surface of the rake wheel that comes into contact with the crop made of spring steel rods which are connected to one another so that they can move relative to one another in such a way that a rim or a similar organ arranged concentrically to the calculating wheel axis can be dispensed with. The against each other movable connection of the spring steel bars can be designed differently, for example some rods can be provided with loop-like bends through which other rods are passed, or the bars can be hooked into one another with bends. The ends of the rods form the prongs. The calculating wheels according to the invention are particularly suitable as a result of contact with the ground or the crop rotated rake wheels for side rakes or similar devices.

Es ist erwünscht, den Mittelteil des Rechenrades klein zu halten, da sonst die Nachgiebigkeit des Rechenrades zu gering ist. Gemäß der Erfindung ist zweckmäßig die Oberfläche des Mittelteils des Rechenrades höchstens ein Viertel der zwischen Zinkenenden und Radachse liegenden Gesamtoberfläche des Rechenrades. Zur Erzielung einer guten Rechenwirkung ist gemäß der Erfindung die zwischen den Zinkenenden und den gegenseitigen Verbindungspunkten der Federstahlstäbe liegende ringförmige Fläche größer als die Hälfte der zwischen Zinkenenden und Radachse liegenden Gesamtoberfläche des Rechenrades.It is desirable to keep the central part of the calculating wheel small, otherwise the flexibility of the Calculating wheel is too small. According to the invention, the surface of the central part of the calculating wheel is expedient at most a quarter of the total surface of the calculating wheel between the tine ends and the wheel axle. In order to achieve a good calculation effect, according to the invention, that between the tine ends and the mutual connection points of the spring steel bars lying annular area larger than the Half of the total surface of the calculating wheel between the tine ends and the wheel axle.

Gemäß einer weiteren Ausführungsform der Erfindung haben die Federstahlstäbe der einen Gruppe eine tangentiale Abbiegung und eine ösenartige Umbiegung und nach einem weiteren tangentialen Verlauf eineAccording to a further embodiment of the invention, the spring steel bars of one group have one tangential bend and an eyelet-like bend and, after another tangential course, one

die Zinke bildende Abbiegung, wobei die Federstahl the bend forming the prong, the spring steel

stäbe der einen Gruppe mit ihren Abbiegungen ineinandergehakt sind, während die Federstahl stäbe der Rechenradrods of one group are hooked into each other with their bends, while the spring steel rods of the Calculating wheel

Anmelder:
C van der Lely N.V.,
Maasland (Niederlande)Applicant:
C van der Lely NV,
Maasland (Netherlands)

Vertreter:Representative:

Dipl.-Ing. W. Cohausz und Dipl.-Ing. W. Florack,
Patentanwälte, Düsseldorf, Schumannstr. 97Dipl.-Ing. W. Cohausz and Dipl.-Ing. W. Florack,
Patent attorneys, Düsseldorf, Schumannstr. 97

Beanspruclite Priorität: Niederlande vom 5. April 1956Claimed priority: Netherlands 5 April 1956

Cornells van der Lely und Ary van der Lely,
Maasland (Niederlande),
sind als Erfinder genannt wordenCornells van der Lely and Ary van der Lely,
Maasland (Netherlands),
have been named as inventors

anderen Gruppe durch die ösenartigen Umbiegungen der ersten Gruppe geführt sind.the other group through the loop-like bends of the first group.

Zwei Ausführungsbeispiele werden an Hand der Zeichnungen beschrieben.Two exemplary embodiments are described with reference to the drawings.

Fig. 1 ist ein Axiaischnitt durch einen Teil eines Rechenrades, wobei ein Federstahldraht in der Normallage in vollen Linien und in einer abweichenden Lage gestrichelt dargestellt ist;Fig. 1 is an axial section through part of a calculating wheel, with a spring steel wire in the Normal position is shown in full lines and dashed in a different position;

Fig. 2 zeigt eine Vorderansicht zu Fig. 1;FIG. 2 shows a front view of FIG. 1;

Fig. 3 zeigt eine teilweise Vorderansicht einer anderen Ausführungsform.Fig. 3 shows a partial front view of another embodiment.

Gemäß Fig. 1 und 2 ist eine Radbüchse 1 in Lagerschalen 2, 3 um eine Achse 4 drehbar. Mit der Büchse 1 sind eine kleine durchlochte Scheibe 5 und eine große durchlochte Scheibe 6 verschweißt. Der äußere Teil der Scheibe 6 ist auf der der Scheibe 5 zugewendeten Seite 7 konkav und auf der anderen Seite8 konvex. Die Büchsei mit den LagerschalenZ_jS und den Scheiben 5, 6 bildet die Nabe eines Rechenrades. According to FIGS. 1 and 2, a wheel sleeve 1 is rotatable about an axis 4 in bearing shells 2, 3. A small perforated disk 5 and a large perforated disk 6 are welded to the sleeve 1. The outer part of the disk 6 is concave on the side 7 facing the disk 5 and convex on the other side 8. The Büchsei with the bearing shells Z _j S and the disks 5, 6 forms the hub of a calculating wheel.

Die Scheibe 5 und die Scheibe 6 haben im dargestellten Beispiel sechs Bohrungen. Mittels sechs durch die Scheiben 5, 6 gesteckter Bolzen 9, 10 kann in verschiedenen Lagen ein Ring 11 gegen die Scheibe 6 angezogen werden. Weiterhin sind in der Nähe des Umfangs der Scheiben 5, 6 Bohrungen 12, 13 bzw. 14, 15, im dargestellten Beispiel vierundzwanzig, vorgesehen. Durch je eine Durchbohrung der Scheibe 5 und der Scheibe 6 ist das rechtwinklig abgebogene Ende eines Stahldrahtes 17 geführt. Die Stahldrähte 17, 18, 19 werden bei der Zusammensetzung des RechenradesThe disk 5 and the disk 6 have six bores in the example shown. By means of six the disks 5, 6 inserted bolts 9, 10, a ring 11 can be tightened against the disk 6 in different positions will. Furthermore, in the vicinity of the circumference of the disks 5, 6 holes 12, 13 and 14, 15, twenty-four in the example shown. Through a hole in each of the disc 5 and the Disc 6, the end of a steel wire 17 bent at right angles is guided. The steel wires 17, 18, 19 are used in the composition of the calculating wheel

909 578/27909 578/27

Claims

With the ring 11 removed, the ends are passed through the disks 5, 6. The ends of the steel wires are then clamped in by means of the ring 11. The steel wire 17 initially extends from the hub over a greater distance in the radial direction, is then bent sharply at 20 and then merges into a part 21 extending approximately tangentially to a circle laid through the bending points of the steel wires. This part 21 is then bent back sharply by approximately 140 ° at 22. This bent straight part 23 is truncated at the end 24. The parts 16, 17, 21, 23 can be viewed together as a spoke of the calculating wheel forming a prong 23. The part forming the spoke 17 is flexible, in particular perpendicular to the plane of the wheel. Just like the steel wire 17, the steel wire 18 and the following steel wires also have a tangential part 25 and a prong 26. The wires 17, 18, 19 lie with their prongs 23, 26 in one plane. The tangential parts 21, 25 also lie essentially in this plane, apart from the thickness of the steel wires protruding beyond this plane. Two adjacent steel wires, e.g. B. the steel wire 17, 21, 23 and the steel wire 18, 25, 26 are, as shown in Fig. 2, hooked into one another. The spoke 18 lies in the direction of rotation in front of the tangential part 21 and the prong 23 in front of the tangential part 25. In this way, all the prongs are close to their inner end, e.g. B. at 22, movably connected to each other. The structure composed of the wires is a very simple, expedient and flexible calculating wheel. The individual prongs can give way in the axial direction without the distance between the inner ends of the prongs being able to exceed a certain value, and this is achieved without the use of a rim, which has the disadvantage that the inner ends of all prongs are held in the same plane will. If the side of the calculating wheel on which the ring 11 is located is present during operation, the wires bend backwards with considerable resistance into the position 17A, 23A shown in broken lines in Fig. 1. In this position, the inner part 27 of the Wire 17 A approximately circular to the convex surface 8 of the disk 6. The direction of rotation of the calculating wheel is indicated by the arrow A in FIG. The wires are expediently hooked into one another in such a way that each wire can only move freely in the direction of rotation with respect to the wire lying in front of it. In order to achieve great flexibility of the rake wheel and so that the crop only touches the flexible wires if possible, the middle part of the rake wheel to which the wires are attached should have a small diameter, preferably a radius 29 that is smaller than half the largest Radius 28 of the calculating wheel. According to the embodiment according to FIG. 3, the spring steel bars 31, 32, which form the prongs 34, 39, are attached to the central part 30. The fastening corresponds to the design according to FIG. 1, with the difference that the support plate 11 consists of segments 33. The spring steel bars 31 run straight and radially and form prongs 34 at their ends. After a further tangential course, a bend 38 follows, which merges into the actual prong 39. Two successive rods 32 are hooked into one another by means of the bends 35, 38, while the rods 31 are guided through the loop-like bends 37 of the rods 32. In the illustrated embodiment, the annular area defined by the tine ends and the connection points 35, 37, 38 is approximately 0.67 of the area defined by the tine ends and the wheel axle. An essential advantage of the calculating wheels according to the invention is that when some wires break, which generally occurs with the prongs outside their support points, the relationship of the calculating wheel is not disturbed. P aT Ii N T Λ.si S I'H C CHE:

1. Calculating wheel for haymaking machines, with tines provided on the wheel circumference, from Wires or rods attached to a central part of the calculating wheel are formed, characterized in that that the entire surface of the rake wheel that comes into contact with the crop consists of spring steel rods which are opposed to one another in this way are movably connected to each other that a rim or the like concentrically to Computing wheel axis arranged organ can be omitted.

2. Calculating wheel according to claim 1, characterized in that the surface of the central part of the Calculating wheel no more than a quarter of the total surface between the tine ends and the wheel axle of the calculating wheel is.

3. Calculating wheel according to claim 1 or 2, characterized in that at least some of the with one end of the spring steel rods attached to the central part over part of their length radially to the Calculating wheel axis run.

4. Calculating wheel according to one of claims 1 to 3, characterized in that the between the Tine ends and the mutual connection points of the spring steel bars lying annular Area is greater than half of the total surface between the tine ends and the wheel axle of the calculating wheel.

5. Calculating wheel according to one of claims 1 to 4, characterized in that at least two groups of spring steel rods (31, 32) are provided with different shapes, each of which has a wire (31) of one group with a wire (32) of the other Group is mutually movable and connected in a supporting manner.

6. Calculating wheel according to claim 5, characterized in that the spring steel bars of one group (32) have a tangential bend (35) and an eyelet-like bend (37) and, after a further tangential course, a bend (38) forming the prong (39) , the spring steel bars of one group (32) being hooked into one another with their bends (35, 38) , while the spring steel bars of the other group (31) are guided through the loop-like bends (37) of the first group.

1 sheet of drawings