WO2021037388A1 - Twin disk spreader - Google Patents

Abstract

The invention relates to a twin disk spreader for distributing particulate material to be distributed, which twin disk spreader comprises: a reservoir (3), which is supported by a supporting frame (1); a fastening apparatus (2) for releasably fastening to a three-point hitch of a tractor, which fastening apparatus is arranged on the supporting frame or on the reservoir; two metering devices (6) having metering slides (7), which cooperate with outlet openings (4) of the reservoir; and two distributing disks (15), which are associated with the metering devices. Associated with the metering devices are remotely operable control elements (9) for transferring the metering slides of the metering devices between the closed position and an open position, one pivoting rod (12) each being articulated to the metering slides, each pivoting rod being guided, at the end thereof remote from the metering slide, on a guide (13) having a scale (14). According to the invention, the guides of the pivoting rods are arranged on the front side of the twin disk spreader, and the end of each guide that is remote from an associated longitudinal side of the twin disk spreader is arranged at a distance of at most 100 cm from the associated longitudinal side.

Description

Double disc spreader

The invention relates to a double disc spreader for

Distributing powder and / or particulate material to be distributed, comprising

- A storage container carried by a support frame for receiving the material to be distributed;

- A fastening device which is arranged on the support frame and / or on the storage container and is designed for the detachable fastening of the two-disc spreader to the three-point power lift of a tractor;

- At least two outlet openings arranged at a distance from one another on the underside of the storage container;

- One metering element assigned to a respective outlet opening, each with a metering slide, which is pivotably articulated on the storage container and between a closed position in which it closes the opening cross-section of the outlet opening assigned to it, and at least one open position in which it controls the opening cross-section of it allocated outlet opening at least partially releases, can be actuated;

- each one associated with a respective dosing element, remotely operable control element, which is designed to transfer the dosing slide of the respective dosing element between the closed position and the at least one open position;

- Each one, hinged to a respective metering slide pivot rod, which is guided at its end facing the metering slide abge on a guide;

- Each one, assigned to a respective guide scale, wel che the current open position of the metering slide assigned to it via the pivot rod articulated to it

1

CONFIRM UNGSKOPIE identified; and

- Each one assigned to a respective metering device Ver divider disk for distributing the metered by means of the respective metering mass flow of material to be distributed.

Zweischeibenstreuer one hand, runners ge ^¬ plated Zweischeibenstreuer in the form of so-called self in the form of agricultural spreaders for spreading pulverulent and / or particulate Verteilgut, such as in particular Dün ger or seed known where they as achsgestützte or especially in the form of attachments get to a set, which have a fastening device for solvable fixing of the two-disc spreader on the three-point power lift of a tractor, such as a tractor. The fastening device usually comprises three coupling points on the one hand for an upper link, on the other hand for two lower links, by means of which the two-disc spreader can be set on the three-point power lift. Such two-disc spreaders have a storage container carried by a support frame and receiving the material to be distributed, on the underside or bottom of which two outlet openings are usually positioned at a distance from one another, possibly also in pairs. A dosing organ is assigned to a respective outlet opening in order to remove the material to be distributed in the desired quantity - or more precisely: with the desired mass flow - as a result of gravity from the storage container and to bring it out. The metering element generally comprises a metering slide which is pivotably linked to the storage container and in this way can be displaced with respect to the respective outlet opening, which by means of a suitable, in particular remotely controllable actuator, moves between a closed position in which it closes the opening cross-section of the outlet opening assigned to it, and at least an open position, in which it at least partially releases the opening cross-section of the spout opening assigned to it, can be actuated to adjust depending on the desired distribution width of the distribution material on the floor, depending on the driving speed and depending on the desired application rate and depending on the physical properties of the Ver part good, such as its flowability to be able to set the desired mass flow. The respective actuator used to open and close the respective metering slide is usually formed by hydraulically or electrically driven piston / cylinder units. Below each metering element there is a distributor disk, usually provided with throwing blades, by means of which the material to be distributed is distributed over the desired working width. Some two disc spreaders are also equipped with a device for adjusting the point of application of the material to be spread onto the distributor disc, the point of application being radial (in particular to enlarge / reduce the spreading fan) and / or in the circumferential direction (in particular to rotate the spreading fan) with respect to the distributor disc about the axis of rotation of the distributor disc) can be adjustable.

On the other hand, double disc spreaders in the form of winter service spreaders are known in which the Vorratsbe container is mainly used to hold granular grit and / or road salt, the function of such a winter service spreading machine largely corresponds to that of the agricultural double disc spreader described above.

If the control element of the metering slide of the metering element is not a fully controllable electric cylinder, its current position, which Corresponds to the respective open position of the metering slide, which is displayed to the operator by means of a display device, such as a portable display arranged in the driver's cab of the tractor, regardless of the fact that an unintentional application of distribution goods results in a considerable economic loss , for environmental reasons it is legally required that the operator can recognize whether or that a respective metering slide is in an open position (see e.g. the DIN-EN 13739-1 standard with regard to mineral fertilizer spreader). In practice, this requirement is usually met by pivoting a pivot rod on a respective metering slide, which is guided on a guide at its end facing away from the metering slide, with a respective guide assigned a scale cooperating with this end of the pivoting rod which identifies the current open position of the metering slide assigned to it via the pivot rod linked to it.

In the case of actuators in the form of simple piston / cylinder units which - be they hydraulically or electrically driven - are only remotely shifted back and forth between a position of the piston pushed into the cylinder and a position of the piston pulled out of the cylinder can, the guide of the pivot rods is often used at the same time for the detachable attachment of stop pieces, which can be set at a corresponding ge with the desired opening position of the metering slide corresponding position of the guide, for example screwed, jammed or the like, so that when the metering slide is opened by means of the piston-cylinder unit, the pivot rod connected to the metering slide, which is pivotally connected to the stop piece, abuts and opens this way forms a stop of the metering slide in the ge desired open position.

A generic double-disc spreader is known from the company brochure "ZA-X Perfect" from the company Amazonen-Werke H. Dreyer GmbH & Co. KG (Hasbergen, Germany) with the printer's note "MI4777 (de_DE) 07-14" The metering slides of the metering organs in the form of remote-controlled hydraulic piston / cylinder units are available so that the metering slides of both metering slides can be opened and closed independently of one another. The guides, which cooperate with the pivoting rods pivoted to the metering slides of the metering members and are provided with scales, are arranged on the opposite side of the transverse side of the fastening device for the three-point power lift of a tractor, i.e. on the rear side of the twin disc spreader when viewed in the direction of travel, which is particularly advantageous easy access even when the two-disc spreader designed as an attachment has been coupled to the three-point power lift of the Zugma machine. A decisive disadvantage, however, is that the operator cannot see the current positions of the swivel rods and thus the current opening positions of the metering slides from the driver's cab of the tractor and consequently also to attach any stop pieces to the guides in order to open the opening position set the respective metering slide according to the required target spread rate, working width and Fahrge speed to the desired mass flow, get out of the tractor and walk around the double disc more faithfully. In addition, the swivel rods, including the guides and the scales assigned to them, are exposed when the material to be spread is spread out, dirt and soil particles flying around. so that the functional components mentioned become dirty and run the risk of corroding. In this context, it should be noted that during the spreading of the distribution material - be it in the form of fertilizer or seeds in a field or be it in the form of grit or salt on a road - not only the distribution material particles themselves, but usually large amounts of particles of earth, sand, dust and the like are whirled up, which, depending on the nature and size of the particles, can also impair the function of the functional components mentioned, provided that, for example, larger particles including small stones get stuck there. In addition, the distribution material usually tends to stick to the functional components, especially when exposed to moisture, whereby most solid fertilizers as well as road salt have a hygroscopic character, so that they agglomerate and with humidity or even rain or snow (mud) As the application progresses, the functional parts increasingly adhere to the functional parts in more or less hard agglomerates. A similar twin disc spreader is known, for example, from DE 4106 560 A1.

DE 2818 816 Al describes another Zweischei benstreuer, in which the pivot rods arranged on the transverse side provided with the fastening device for the three-point power lift of a tractor on the circumference of the base plates of the storage container can be fixed in the desired open position of the metering members and clamped onto them Way form a stop against which the metering slide of the metering elements interacting with the openings formed in the base plates abut when they are operated by means of remotely controllable Hydraulikzylin. With regard to the disadvantages, what has been said above largely applies, with both the at the level of the metering slide below the Vorratsbe container arranged pivot rods as well as the fertilizer and dirt particles flying around with these interacting scales are exposed and cannot be seen from the tractor.

DE 76 20 709 U describes a two-disc spreader of simple design, in which a common swivel rod is hinged to the metering slides of both metering members, which is provided with a single, centrally provided with the fastening device, so - in the direction of travel, seeks - front transverse side of the two-disc spreader in orderly and equipped with a scale guide cooperates, with only a common open position of both metering slides can be defined by means of a detachable stop piece on the guide. In this way, the operator can see the current position of the swivel rod from the driver's cab of a tractor carrying the twin disc spreader, but on the one hand the guide is difficult to access when the twin disc spreader is coupled to the tractor, and on the other hand the guide interacting with the swivel rod makes it difficult to couple the top link to the associated coupling point of the fastening device of the two-disc spreader when the latter is to be connected to the three-point linkage of the tractor.

The invention is based on the object of developing a two-disc spreader of the type mentioned in a simple and inexpensive manner in such a way that the aforementioned disadvantages are at least largely countered, with actuation of the metering slides of the metering organs by means of the respective actuating elements independently of one another and independently of one another adjustable opening adjustment positions of the metering slides should be ensured.

According to the invention, this object is achieved in a double disc spreader of the type mentioned in that the guides of the pivot rods are arranged on the transverse side of the two disc spreader on which the fastening device is arranged and at least the end of a respective one facing away from a respective longitudinal side of the double disc spreader Guide a respective swivel rod is arranged at a distance of no more than 100 cm from the respective long side of the two-disc spreader.

The configuration according to the invention thus makes it possible, please include that the guides, including the pivot rods guided therein, are always arranged on the transverse side of the two-disc spreader facing a tractor, which is the - viewed in the direction of travel - in front of the transverse side of the two-disc spreader, if The latter, as usual, has been coupled to the rear three-point linkage of a tractor, such as a tractor, but it can also be the rear transverse side of the double disc spreader when the latter is in special cases on a front side - viewed in the direction of travel The tractor's three-point linkage has been coupled. According to the invention, it is ensured that the dosing slides of the dosing organs, which can be actuated independently of one another by means of the respective actuating elements and, if necessary, can be transferred into different opening positions, ensure that the functional components formed from the pivoting rods articulated on a respective dosing slide with the guides that interact with them and the scales assigned to them are protected from scattered goods and other particles flying around and are not impaired even during long periods of operation. experience of their nature and function. The current position of a respective swivel rod, which corresponds to the current open position of a respective metering slide, is visible to the operator from the driver's cab of a tractor bearing the twin-disc control, e.g. a tractor, the operator depending on the design of the actuating elements (see further below) also has the option of providing the guides, which are easily accessible from the longitudinal sides of the two-disc spreader, with stop pieces in order to set the desired opening positions of the metering slide via the respective stop of the pivot rods attached to the respective stop piece independently of one another and, if necessary, during to change the distribution work. Due to the arrangement of the guides of the swivel rods at a distance of no more than about 100 cm from the respective long side of the double disc spreader, easy access to the mentioned functional components from the long sides (extending parallel to the direction of travel) is also ensured when the two of them disc spreader has been added by the three-point linkage of a Zugma machine.

For the latter purposes, it can prove to be advantageous if at least the end of a respective guide of a respective pivot rod facing away from a respective longitudinal side of the double disc spreader at a distance of at most about 90 cm, in particular of at most about 85 cm, preferably of at most about 80 cm, for example se from about 70 cm to about 80 cm, is arranged from the respective longitudinal side of the double disc spreader.

In order to ensure a good view of the guides interacting with the pivot rods from the driver's cab of a tractor carrying the two-disc spreader To ensure easy accessibility of the guides from the longitudinal sides of the twin disc spreader coupled to the tractor, the guides of the pivot rods preferably extend with an extension direction component arranged in the transverse direction of the twin disc spreader (i.e. perpendicular to the direction of travel), whereby they are advantageously in particular primarily or in the Can extend essentially entirely in the transverse direction of the two-disc spreader. In this way, in particular, the current position of a respective pivot rod can be easily and very easily recognized by the operator sitting in the driver's cab of the tractor.

In an advantageous embodiment, the mutually facing ends of the guides of the pivot rods are spaced apart, which also gives them good accessibility, especially from the side over the entire extent of the guides. The mutually facing ends of the guides can in particular each be arranged with a lateral transverse distance from a coupling point of the fastening device, which is used to releasably fasten an upper link of the three-point power lift of the tractor, so that the coupling process of the two-disc spreader to the three-point Do not obstruct the power lift and do not run the risk of being damaged. In addition, such an arrangement of the guides gives the operator sitting in the driver's cab of a tractor carrying the two discs more faithful to an overview of the entire extension of the guides, which are also not partially covered by the coupling point of the fastening device for the top link. In this context, it proves to be advantageous, for example, if the facing ends of the guides of the pivot rods at a distance of at least about 10 ° cm, in particular of at least about 15 cm, preferably of at least about 20 cm, for example with a distance between about 20 cm and about 40 cm or between about 20 ° cm and about 30 cm, are arranged from each other.

In order to ensure ideal accessibility of the guides of the swivel rods both from the driver's cab of a tractor carrying the twin disc spreader and from its longitudinal sides, while ensuring a very simple and quick reading of the current position of a respective swivel rod from the driver's cab of the tractor, extend the guides of the swivel rods are preferably each essentially circular arc-shaped from their mutually facing ends on the transverse side of the twin disc spreader on which the fastening device is arranged (ie on the - viewed in the direction of travel - front transverse side of the twin disc spreader, if the latter on the rear Three-point power lift of a tractor has been coupled), in the direction of a respective longitudinal side of the double disc spreader, where they are expediently at least slightly curved outward.

In order to further facilitate the above-mentioned coupling process of the two-disc spreader to the three-point power lift of a tractor, especially in the area of the top link, the guides of the pivot rods can advantageously be spaced apart from one another, e.g. of at least about 3 cm, preferably of at least about 5 cm, for example between about 3 cm and about 20 cm or between about 3 cm and about 15 cm or between about 3 cm and about 10 cm, in With respect to a coupling point of the fastening device, which is used to releasably fasten an upper link of the three-point Kraf thebers of the tractor, be arranged offset in the direction of the storage container. If the two-disc spreader has therefore been coupled to the rear three-point linkage of a tractor, the guides of the swivel rods are - viewed in the direction of travel - offset to the rear opposite the coupling point of the top link of the fastening device of the two-disc spreader, so that they can also be moved in the event of a fast or careless coupling of the two-disc spreader to the tractor cannot be damaged. In addition, for the same purposes, for example, they can also be arranged offset downwards with respect to the coupling point of the upper link of the fastening device.

In this context, it can also prove to be advantageous if the guides of the pivot rods do not protrude beyond the outer circumferential cross-section of the storage container, so that the risk of damage to the aforementioned functional components is minimized even if the two-disc spreader is switched off, e.g. when it is stored becomes.

In order to ensure both easy accessibility and good visibility of the guides that work together with the swivel rods from the driver's cab of a tractor that is more faithful to the twin discs and also to protect them as well as possible from thrown up dirt and dust, the guides are preferably above the Do. the metering slide is arranged, for example at a level above the metering slide and below the coupling point of the fastening device of the two disc spreader for the top link of the three-point power lift of a tractor.

While the guides of the swivel rods can in principle also be arranged on the support frame of the two-disc spreader, they can advantageously be arranged on the storage container, which in turn facilitates their accessibility for the user and in particular makes it possible, please include them in a funnel-shaped downwardly tapering area of the storage container and consequently protected from external influences.

As mentioned at the beginning, depending on the configuration of the actuator of the metering slide of a respective metering organ on a respective guide, a stop piece can also be adjustable to serve as a stop for the pivot rod of a respective metering slide hinged to it in a desired open position.

Such a detachable stop piece, which can be screwed or clamped to it, for example, is required in the case of an actuator in the form of a hydraulic piston / cylinder unit - be it double-acting, both hydraulically extendable and hydraulically inserted, or be it single-acting Can only be pulled out hydraulically and pushed in by means of a mechanical preload, e.g. by means of a spring - or in the form of a non-adjustable electrical piston / cylinder unit to serve as a stop for the respective metering slide in the desired opening position by using the respective pivot rod linked to it abuts against the stop piece as soon as the metering slide has been pivoted into the desired opening position by means of the actuator. If the actuator is, for example, an adjustable electric piston / cylinder unit in the manner of a regulatable electric cylinder, then such a stop piece is dispensable or such a stop piece can be releasably fixed on the respective guide in a position which corresponds to the maximum opening position of the respective metering slide, since the controllable electric cylinder itself can bring the metering slide into practically any desired opening position.

As far as the structural design of the guides of the swivel rods is concerned, the guides can each include, for example, a guide rail which engages under from the end of a respective swivel rod facing away from the metering slide. In this way, the free end of a respective swivel rod is protected from external influences underneath a respective guide rail, for example between this and a component carrying the guide rail, e.g. the storage container.

In order to ensure particularly safe and reliable guidance of a respective swivel rod, a guide piece can be fixed on the end of a respective swivel rod facing away from the metering slide, in particular detachable for assembly-technical reasons, which overlaps a respective guide rail so that the respective Guide rail is arranged between the end of a respective pivot rod facing away from the metering slide and the Füh approximately piece, which take up the guide rail like a fork between them.

The guide piece of the pivot rod, which can also be formed by an injection-molded part, for example, can advantageously be provided with a pointer which interacts with the scale assigned to the guide rail of the guide, in particular - the pointer overlaps the guide rail and / or - The guide piece has an additional guide arm which engages over the guide rail.

In addition, the guide rails of the guides can preferably be provided with an elongated hole extending in the guide direction, on which the stop piece can be releasably fixed, e.g. by means of screws, clamps or the like, adjustably, in that it comprises, for example, a pin penetrating the elongated hole.

The piston / cylinder unit of the actuator can, irrespective of its mode of operation (electrical / hydraulic), expediently be effective on the one hand on the metering slide, on the other hand on a support bracket of the storage container and / or the support frame, in order to avoid changes in length as a result of the piston being pulled out of the cylinder or . To transfer the insertion of the piston into the cylinder in a pivoting movement of the metering slide.

According to an advantageous development of a two-disc spreader according to the invention, it can also be provided that the metering slide has a plurality of fastening means, in particular in the form of bores, which are used for the exchangeable articulation of a hydraulic or electrical piston / cylinder unit and / or a return spring of a single-acting hydraulic piston / cylinder unit. Such a configuration gives the metering slide of the metering element a multifunctionality by making the metering element independent of the operating mode of the adjusting element, so that on the one hand a simple replacement of the adjusting element and, in particular, a conversion, for example from hydraulic piston / cylinder units to electrical ones Piston / cylinder units on the part of the user is possible without having to dismantle and replace the entire metering device. In addition, such a design makes both For example, dealers are able to keep a large number of double-disc spreaders in stock at an early stage and, depending on the customer's requirements, to provide them with the desired control element without having to undertake complex conversions.

In this context, it also proves to be advantageous if a supply console is also arranged on the storage container, which is used to set electrical and / or electronic component components, such as electrical and / or electronic interfaces, cable routing means, control / Control modules and the like, is used, so that even in the case of a hydraulic control element that does not require such component components, a simple and quick conversion to an electrical operation is possible or there is the possibility from the outset to individually use a twin-disc spreader that has already been delivered to a dealer to be provided with the actuators required by the customer.

Further features and advantages of the invention will become apparent from the following description of Ausführungsbeispie len with reference to the drawings. Show:

1 shows a schematic perspective view of an embodiment of a two disc spreader according to the invention from - viewed in the direction of travel - obliquely at the front;

Fig. 2 is a schematic side view of the two-disc spreader according to Figure 1 from - again viewed in the direction of travel - the front;

3 shows a schematic side view of the two-disc spreader according to FIGS. 1 and 2 from the side;

Fig. 4 is a schematic perspective view of the

Reservoir of the twin disc spreader according to 1 to 3 including its functional components arranged thereon from obliquely below;

5 shows a schematic perspective view of a metering slide of one of the metering members of the two disc spreader according to FIGS. 1 to 3;

6 shows a schematic perspective detailed view, essentially corresponding to FIG. 4, of the functional components arranged on the storage container of the double-disc spreader from diagonally below, the actuating elements of the metering slide being formed by double-acting hydraulic piston / cylinder units;

FIG. 7 shows a detailed view corresponding to FIG. 6, where the control elements of the metering slide are formed by a specialized hydraulic piston / cylinder units which interact with return springs; FIG.

8 shows a detail view corresponding to FIGS. 6 and 7, the actuating elements of the metering slide being formed by non-controllable electrical piston / cylinder units;

9 shows a detail view corresponding to FIGS. 6 to 8, the actuating elements of the metering slide being formed by controllable electrical piston / cylinder units;

10 is a schematic plan view of an embodiment of a guide with a pivot rod guided thereon, viewed from above; and

11 shows a schematic plan view of the guide according to FIG. 10 with the pivot rod guided thereon, viewed from below. In Figs. 1 to 3 an embodiment of a twin disc spreader according to the invention is schematically reproduced, which in the present case is designed like a fertilizer spreader for agricultural purposes and for distributing powder and / or particulate Ver part good, such as fertilizer, seeds, Lime, sand and the like are used. The two-disc spreader is designed as an attachment, which can be releasably attached to a conventional three-point power lift ei ner tractor, such as a tractor (not shown) and for this purpose has a fastening device 2 - arranged here on a support frame 1 of the two-disc spreader on, which on the one hand an upper coupling point 2a, which is arranged centrally in the upper area of the front transverse side of the support frame 1 in the direction of travel F (see Fig. 1) and for articulating an upper link (not shown in the drawing), on the other hand two lower coupling points 2b, which are arranged in the lower area of the front transverse side of the support frame 1 in the laterally outer area and each serve to articulate a lower link (also not shown).

On the support frame 1, a storage container 3 is mounted for receiving the material to be distributed during the distribution work, which in the present exemplary embodiment essentially tapers in a funnel-shaped manner downwards (see also FIG. 4). On the underside of the storage container 3, two laterally spaced from each other on subordinate outlet openings 4 are arranged in the bottom (see. Figs. 6 to 9), which, as shown in Fig. 4, can be surrounded by brushes 5 to the to hold back escaping particles of distribution material with the formation of guide chambers on the circumferential side. As can be seen again in particular in FIGS. 6 to 9, in which the brushes 5 have been removed for reasons of illustration. have been left, a respective discharge opening 4 is assigned a metering element 6 which comprises a metering slide 7 which is articulated on the bottom of the storage container 3 so as to be pivotable about an approximately vertical pivot axis 8. By pivoting the metering slide 7 about the pivot axis 8, it is between a closed position (not shown in the drawing) in which it completely closes the opening cross-section of the outlet opening 4 assigned to it, and any open position in which it can open the opening cross-section of the outlet opening 4 assigned to it essentially completely or - in the graphic representations of FIGS. 6 to 9 each - partially releases, actuatable.

As can also be seen in particular from FIGS. 6 to 9, each metering slide 7 of a respective Dosieror 6 is assigned its own and independently remote control element 9, which is used to transfer the Do sierschiebers 7 of the respective metering 6 between the closed position and a respective one The open position is used and in the present case in the form of a piston / cylinder unit 10 - be it hydraulic 10a, 10b or be it electrical 10c, 10d - is designed. As explained in more detail below with reference to FIG. 5, the piston rod of a respective piston / cylinder unit 10 is eccentrically articulated to the metering slide 7 with respect to the pivot axis 8 of the metering slide 7, in particular in the area of its end opposite the outlet opening 4 , while the cylinder of a respective piston / cylinder unit 10 can be articulated, for example, on a support bracket 11 provided for this purpose on the support frame 1 of the two-disc spreader.

Also eccentric with respect to the pivot axis 8 of the metering slide 7 and in the present case also eccentric Risch to its point of articulation on a respective piston / cylinder unit 10 and preferably also in the area of its end opposite the outlet opening 4, a pivot rod 12 is articulated to the metering slide 7 of a respective metering member 6, the pivot rod 12 either directly or - as in the present case Execution example of the case - can be articulated via a lever 23 on the metering slide via 7. The lever 23 can, for example, be designed in two parts and comprise two lever pieces that can be screwed together ver in order to be able to adjust its length exactly to the desired level. The end of a respective pivot rod 12 facing away from a respective gene metering slide 7 is guided on a guide 13, each guide being assigned a scale 14 which identifies the current open position of the metering slide 7 assigned to it via the position of the pivot rod 12 hinged to it.

As can also be seen from FIGS. 1 to 3, the twin-disc spreader also comprises a distributor disk 15 assigned to a respective metering element 6 and arranged below a respective metering slide 7 - in FIGS. 1 and 2 covered by a distributor disk protector , wherein the distributor disks 15 are equipped with, insbesonde re adjustable throwing blades 16 and are used to distribute the mass flow dosed by means of the respective metering member 6 to the material to be distributed. The distributor disks 15, which generally revolve around an approximately vertical axis in the opposite direction, can be assigned any drive, for example hydraulic or electric, and in the embodiment shown in the drawing, for example, by means of a central drive shaft 17 (see 2) can be connected to the PTO shaft of a tractor, such as a tractor. As already mentioned above, the functions of the swivel rods 12 which are provided with the scales 14 to interact with each other are primarily to provide the user from the driver's cab of a tractor, such as a tractor, with the respective open position of a respective metering slide 7 of a respective metering member 6 to display independently of each other, and on the other hand - if the piston / cylinder units 10 of the actuators 9 are not electric cylinders adjustable in terms of the desired extension length - to make possible, by means of the guides 13 adjustable adjustable stop pieces 18 which can be fixed in each case desired opening position of a respective metering slide 7 set independently vonei nander by the stop pieces 18 serve as a stop on a respective pivot rod 12 and consequently the metering slide 7 articulated thereon in its desired open position. In order to counteract the easy accessibility of the pivot rods 12 cooperating with the guides 13 from the longitudinal sides of the double disc spreader even if the latter has been picked up by the three-point power lift of a tractor, the guides 13 of the pivot rods 12 are on the one hand on that The transverse side of the two-disc spreader is angeord net on which the fastening device 2 is also angeord net (that is, in the present case, when the two-disc spreader has been coupled to the rear three-point linkage of a tractor, on the front transverse side of the two-disc litter - viewed in the direction of travel F ers), on the other hand, the ends of a respective guide 13 of a respective pivot rod 12, i.e. in the present case the mutually facing ends of the guides 13, facing away from a respective longitudinal side of the two disc spreader (extending parallel to the direction of travel F) a distance A of at most about 100 cm - in the present case, for example, from about 75 cm to about 80 cm - arranged from the respective longitudinal side of the two-disc spreader (see in particular FIG. 2, but also FIGS. 1, 3, 4 and 6 till 9). The ends of the guides 13 facing away from one another, that is to say their ends facing a respective longitudinal side of the double disc spreader, can, for example, have a distance C between about 30 cm and about 70 cm, for example between about 40 cm and about 60 cm, in the present case about 50 cm, from the respective long side of the twin disc spreader.

The facing "inner" ends of the guides 13 of the pivot rods 12 are also arranged at a distance B of at least about 10 cm - here of about 25 cm - voneinan, each with a lateral transverse distance from the upper coupling point 2a of the fastening device 2 , which is used to releasably attach an upper link so that the guides 12 do not interfere with the coupling process and do not run the risk of being damaged. For appropriate reasons, the guides 13 of the pivot rods 12 are arranged offset at a longitudinal distance of preferably at least about 3 cm, here for example of about 6 cm, in relation to the upper coupling point 2a of the fastening device 2 in the direction of the reservoir 3 (ie In the present case - viewed in the direction of travel F - at a longitudinal distance to the rear of the upper coupling point 2a of the fastening device 2), whereas they are additionally offset downwards, but above half the metering slide 7 of the metering elements 6.

To both during operation and during downtimes of the two-disc spreader, when it has been parked, for example, in the user's yard, with the To protect swivel rods 12 interacting guides 13 from mechanical effects, the guides 13 of the swivel rods 12 do not protrude beyond the outer circumferential cross-section of the storage container 3, and in the present case they are arranged on the funnel-shaped downwardly tapering area of the storage container 3. The guides 13 of the pivot rods 12 extend primarily in the transverse direction of the twin disc spreader so that the operator can easily read the respective position of a respective pivot rod 12 and consequently the respective opening position of the respective metering slide 7 during the distribution work on the scales 18 shown th embodiment each essentially in the shape of an arc of a circle from their mutually facing ends on that transverse side of the two-disc spreader on which the fastening device 2 is arranged (ie in the present case on the front transverse side of the two-disc spreader - viewed in the direction of travel F) in the direction of a respective one ligen longitudinal side of the same extend.

As can be seen in particular in FIGS. 10 and 11, but also in FIGS. 6 to 9, the guides 13 of the swivel rods 12 (shown broken off here) each include a guide rail 19, for example, which on their underside (FIG. 11) has a downwardly projecting fastening projection 19a which is fixed to the storage container 3 by means of screws 26, for example. The fastening projection 19a of the guide rail 19 is followed by a guide section 19b, which is arranged at a distance from the reservoir 3 due to the height offset caused by the fastening projection 19a in the mounted state, in order to move between this and the guide section 19b facing away from the metering slide 7 Take up the end of a respective pivot rod 12, so that the guide Section 19b of the guide rail 19 is gripped from below by the pivot rod 12. At the end of a respective pivot rod 12 facing away from the metering slide 7, a guide piece 20 formed by an injection-molded part, for example, is also detachably, for example locked, fixed, which engages over the guide section 19b of a respective guide rail 19, so that the guide section 19b of a respective guide rail 19 is arranged between the end of a respective pivot rod 12 facing away from the metering slide 7 and the respective guide piece 20. The guide piece 20 of the pivot rod 12 can advantageously be provided with a guide rail 19 of the guide 13 übergrei fenden pointer 20a, which cooperates with the scale 14. It can also have an additional guide arm 20b, which also overlaps the guide rail, for example by a greater degree than the pointer 20a, so that captive guidance of the pivot rod 12 on the guide rail 19 is ensured.

As can also be taken in particular FIGS. 10 and 11, the guide rails 19 of the guides 13 are provided in the region of their guide section 19b with an elongated hole 21 extending in the guide direction, on which the stop piece 18 for setting the desired opening position of a respective one Dosing slide 7 is adjustably fixable in that it can be screwed to it, for example. In FIG. 11 it can be seen that the free end of a respective swivel rod 12 facing away from a respective metering slide 7 can preferably be provided with a shape complementary to the stop piece 18 in order to ensure an exact and reproducible stop of the swivel rod 12 on the stop piece 18 and consequently to ensure the metering slide 7 hinged to it in its desired open position. As far as the structural design of the metering slide 7 is concerned, Fig. 5 shows an advantageous Ausgestal device of the same, according to which the metering slide 7 in addition to its pivot axis 8 and its opposite, eccentrically arranged articulation point 21 of a respective pivot rod 12 - or more precisely: of him with the Swivel rod 12 connecting lever 23 (see above) - a plurality of fastening means 22, which are also designed in the form of bores 22a, 22b, 22c and for the exchangeable articulation of hydraulic or electrical piston / cylinder units 10 and / or return springs from single-acting hydraulic piston / cylinder units 10 the NEN, in order to ensure easy equipping or retrofitting of the actuating organs 9 of the metering slide 7. In the present exemplary embodiment, for example, the borehole 22a spaced from the pivot axis 8 with the smallest lever arm serves to link a double-acting hydraulic piston / cylinder unit 10a (see FIG. 6) or a single-acting hydraulic piston / cylinder unit 10b (see FIG . 7), the bore 22b in the case of the last-mentioned single-acting hydraulic piston / cylinder unit 10b for fastening a return spring 24 (cf. the return spring 24 of FIG Piston / cylinder unit 10b elastically preloaded into the piston position pushed into the cylinder. The bore 22c spaced from the pivot axis 8 with the largest lever arm serves, for example, to link a non-controllable electrical piston / cylinder unit 10c (see FIG. 8) or a controllable electrical piston / cylinder unit 10d (see FIG Fig. 9), which are usually able to exert lower actuating forces compared to hydraulic cylinders. As finally emerges from FIGS. 8 and 9, in which the actuators 9 of the metering slide 7 are non-controllable electrical piston / cylinder units 10c (cf. FIG. 8; in this respect corresponding to the double-acting 10a or single-acting hydraulic pistons - / cylinder units 10b of FIGS. 6 and 7, the stop piece 18 is required here to define the respective desired opening position of the metering slide 7) or controllable electrical piston / cylinder units 10d are involved (cf. FIG. 9; in In this case, there is no need for a stop, so that the stop piece 18 is dispensable or, for example, according to the maximum open position of the Do sierschiebers 7 can be set on the guide 13), a supply bracket 25 can also be arranged on the underside of the storage container 3, which for Establishing electrical and / or electronic component components is used.

Claims

Claims 1. Double disc spreader for distributing powder and / or particulate material to be distributed, comprising - One of a support frame (1) carried storage container (3) for receiving the distribution material; - One on the support frame (1) and / or on the storage container (3) arranged fastening device (2), which is designed for the releasable fastening of the double disc spreader on the three-point linkage of a traction machine; - At least two on the underside of the Vorratsbehäl age (3) and spaced from each other from run openings (4); - one metering element (6) assigned to a respective outlet opening (4), each with a metering slide (7), which is pivotably articulated on the storage container (3) and between a closed position in which it controls the opening cross-section of the outlet opening assigned to it ( 4) closes, and at least one open position, in which it at least partially releases the opening belt of the outlet opening (4) assigned to it, can be actuated; - Each one of a respective dosing element (6) assigned, remotely controllable actuator (9), which is designed to transfer the metering slide (7) of the respective Dosieror (6) between the closed position and the at least one open position; - Each one, on a respective metering slide (7) is steered swivel rod (12), which is guided at its end facing away from the Do sierschieber (7) on a respective guide (13); - in each case one scale (14) assigned to a respective guide (13) which identifies the current open position of the metering slide (7) assigned to it via the pivot rod (12) linked to it; and - One distributor disc (15) assigned to a respective metering element (6) for distributing the mass flow of material to be distributed, which is dosed by means of the respective metering element (6), characterized in that the guides (13) of the swivel rods (12) on the transverse side of the twin-disc spreader, on which the fastening device (2) is arranged, are arranged and at least that end of a respective guide (13) of a respective swivel rod (12) facing away from a respective longitudinal side of the twin disc spreader at a distance of at most 100 cm from the respective longitudinal side of the two-table yew spreader is arranged. 2. Two-disc spreader according to claim 1, characterized in that at least the end facing away from a respective Längssei te of the two-disc spreader of a respective guide (13) of a respective pivot rod (12) with a distance of at most 90 cm, in particular re of at most 85 cm, is arranged from the respective longitudinal side of the double disc spreader. 3. Two-disc spreader according to claim 1 or 2, characterized in that the guides (13) of the pivot rods (12) extend with a component extending, in particular primarily, in the transverse direction of the two-disc spreader. 4. Two-disc spreader according to claim 3, characterized in that the mutually facing ends of the guides (13) of the pivot rods (12) are arranged at a distance from one another, in particular each with a lateral transverse distance from a coupling point (2a) of the fastening device ( 2) are arranged, which is used to releasably attach an upper link of the three-point power lift of the tractor. 5. Two-disc spreader according to claim 3 or 4, characterized in that the mutually facing ends of the guides (13) of the pivot rods (12) stood at a distance of at least 10 ° cm, in particular of at least 15 cm, preferably of at least 20 cm, are arranged from each other. 6. Two-disc spreader according to one of claims 3 to 5, characterized in that the guides (13) of the pivot rods (12) are each essentially circular arc-shaped from their mutually facing ends on the transverse side of the two-disc spreader, on which the fastening device (2) is arranged, extend in the direction of a respective longitudinal side of the two-disc spreader. 7. Two-disc spreader according to one of claims 1 to 6, characterized in that the guides (13) of the pivot rods (12) at a longitudinal distance with respect to a coupling point (2a) of the fastening device (2), which kers for releasably attaching a Oberlen the three-point power lift of the tractor is used, offset in the direction of the storage container (3). are net. 8. Two-disc spreader according to one of claims 1 to 7, characterized in that the guides (13) of the pivot rods (12) do not project outwardly beyond the outer circumferential cross-section of the storage container (3). 9. Two-disc spreader according to one of claims 1 to 8, characterized in that the guides (13) of the pivot rods (12) are arranged above the metering slide (7) of the metering elements (6). 10. Two-disc spreader according to one of claims 1 to 9, characterized in that the guides (13) of the pivot rods (12) on the storage container (3) are angeord net, in particular on a funnel-shaped downwardly tapering area of the storage container (3) are arranged. 11. Two-disc spreader according to one of claims 1 to 10, characterized in that a stop piece (18) can also be adjustably fixed to a respective guide (13) in order to act as a stop for the pivot rod (12) of a respective metering slide (7 ) to serve in a desired open position. 12. Two-disc spreader according to one of claims 1 to 11, characterized in that the guides (13) of the pivot rods (12) each comprise a guide rail (19) which, from the metering slide (7) facing away from the end of a respective pivot rod (12) Is under attack. 13. Two-disc spreader according to claim 12, characterized in that a guide piece (20), in particular detachable, is fixed on the metering slide (7) facing away from the end of a respective pivot rod (12) which engages over a respective guide rail (19), so that the respective guide rail (19) is arranged between the end of a respective pivot rod (12) facing away from the metering slide (7) and the guide piece (20). 14. Two-disc spreader according to claim 13, characterized in that the guide piece (20) of the pivot rod (12) is provided with a pointer (20a) which is associated with the guide rail (19) of the guide (13) assigned scale (14) cooperates, in particular - The pointer (20a) overlaps the guide rail (19) and / or - The guide piece (20) has an additional guide arm (20b) which engages over the guide rail (19). 15. Two-disc spreader according to claim 11 and one of claims 12 to 14, characterized in that the guide rails (19) of the guides (13) with an elongated hole (21) extending in the guide direction are verses on which the stop piece (18) is adjustable. 16. Two-disc spreader according to one of claims 1 to 15, characterized in that the actuator (9) of a respective metering slide (7) is a, in particular hydraulic or electrical, piston / cylinder Lindy unit (10) acts. 17. Double disc spreader according to claim 16, characterized in that the piston / cylinder unit (10) is effective on the one hand on the metering slide (7) and on the other hand on a support bracket (11) of the storage container (3) and / or the support frame (1) is. 18. Two-disc spreader according to claim 16 or 17, characterized in that the metering slide (7) has a plurality of fastening means (22), in particular in the form of bores (22a, 22b, 22c), which are used for the exchangeable articulation of a hydraulic (10 , 10a, 10b) or electrical piston / cylinder unit (10, 10c, 10d) and / or a return spring (24) of a single acting piston / cylinder unit (10, 10b) the NEN. 19. Two-disc spreader according to one of claims 16 to 18, characterized in that a supply bracket (25) is also arranged on the storage container (3), which is used to set electrical and / or electronic component components.