DE102020117755A1 - Mounted field sprayer with a cantilevered tank - Google Patents

Abstract

The invention relates to a mounted field sprayer (10) with a frame construction (18) which has an upper coupling point (36) and two lower coupling points (38), in particular for coupling to the upper link (40) and the lower links (42) of the three-point connection (44). a tractor (14), and having at least one container (22) for spray liquid to be distributed. In order to create a mounted field sprayer (10) with a large tank volume and an optimized center of gravity, the invention provides that the tank (22) has a projection (78) whose maximum extension (ME) is arranged above the upper coupling point (36) and whose maximum extent (ME) in the direction of travel (FR) in front of a crosspoint plane (KE) perpendicular to the direction of travel (FR), intersecting the upper crosspoint (36) and/or running through the center point of the upper crosspoint (36).

Description

The invention relates to a mounted field sprayer with a container having a projection for the spray liquid to be distributed.

A mounted sprayer was by the EP 0 403 859 A1 already known. The mounted field sprayer includes a frame construction which has an upper coupling point and two lower coupling points for the connection or coupling to the upper link and the lower links of the three-point connection of a tractor.

The mounted field sprayer includes a container for carrying and providing a spray liquid to be distributed. This is located completely behind the upper coupling point and the two lower coupling points in the direction of travel, which has the disadvantage that the center of gravity of the mounted field sprayer is far behind the tractor and can therefore have a negative impact on the driving characteristics of the tractor, especially with large tank volumes can be negatively influenced.

The object of the invention is therefore to create a mounted field sprayer with a large container volume and an optimized center of gravity.

This object is achieved by a mounted field sprayer having the features of independent claim 1. Advantageous embodiments and developments of the invention are disclosed in the claims and the following description with partial reference to the figures.

The invention relates to a mounted field sprayer with a frame construction which has an upper coupling point and two lower coupling points, in particular for coupling (e.g. direct or indirect connection) to the upper link and the lower links of the three-point connection (e.g. three-point power lift and/or coupling device) of a tractor .

The mounted field sprayer also includes at least one container for spray liquid to be distributed.

In order to create a mounted field sprayer with a large tank volume and an optimized center of gravity, the invention provides that the tank has a projection whose maximum extent is arranged above the upper coupling point and whose maximum extent in the direction of travel in front of a perpendicular to the direction of travel, intersecting the upper coupling point and /or lies through the center point of the upper crosspoint running crosspoint level.

As a result of the features according to the invention, due to the design of the container with a projection and the positioning of this projection on the container, the center of gravity of the mounted field sprayer is much closer to the tractor compared to the containers for mounted field sprayers known from the prior art, which means that even with large tank volumes the Risk of negative driving characteristics is significantly reduced.

It should be noted that in the context of the invention, the direction of travel corresponds in particular to a forward direction of the mounted field sprayer, in particular a direction in which the mounted field sprayer is moved along a field with a tractor.

The upper coupling point and the two lower coupling points are preferably designed and arranged in relation to one another in such a way that they form a commercially available three-point connection or three-point hitch, in particular a three-point hitch for connection to a three-point connection or a three-point power lift in accordance with ISO 730-1, which Three-point linkage is appropriate part of a tractor. Alternatively or additionally, it would also be conceivable in the context of the invention that the upper coupling point and/or the lower coupling points are designed in such a way that they can be coupled to a coupling device (e.g. coupling triangle) and in turn the three-point connection of a tractor can be coupled to the coupling device. According to the present description, such a coupling of the mounted field sprayer to a tractor is also included.

It should be pointed out that the two lower coupling points can also be formed by a common shaft. Provision can also be made for the frame construction to have a plurality of lower coupling points and/or upper coupling points in order to create, for example, three-point connections with different connection categories. According to the present description, the definite lower coupling point and upper coupling point each relate to the rearmost lower coupling point or upper coupling point in relation to the direction of travel.

The mounted field sprayer includes a tank for the spray liquid to be distributed, which is attached to the frame construction. In particular, liquid agricultural plant protection agents, fertilizers and/or the like are expediently used as the spray liquid.

To distribute the spray liquid, the mounted field sprayer has a large working width (eg 12 meters, 21 meters or more) transverse to a direction of travel of the mounted field sprayer extending spray boom with it at regular intervals (eg 25cm or 50cm) arranged distribution elements (eg spray nozzles). In particular, it can be provided that the mounted field sprayer for the distribution of spray liquid comprises distribution elements which are operatively connected (eg fluidically connected) to the container by means of a liquid line system.

For conveying the spray liquid in the liquid line system, i.e. from the container to the distribution elements, the mounted field sprayer comprises a liquid pump, the liquid pump is a liquid pump that can preferably be operated exclusively with a hydraulic and/or electrical energy supply, in particular a liquid pump that can be operated without mechanical movements and is a power source of a tractor. This means that the liquid pump in particular does not require any mechanical power transmission (e.g. by means of a cardan shaft) from a tractor, which means that a resulting mounting space between the mounted field sprayer and a tractor is significantly increased and basically the configuration of the container with a projection whose maximum extent is above of the upper coupling point and whose maximum extension in the direction of travel is located in front of a coupling point plane perpendicular to the direction of travel, intersecting the upper coupling point and/or running through the center point of the upper coupling point.

It is possible that the liquid pump is in particular a piston diaphragm pump or a centrifugal pump.

In order to only need one liquid pump to convey the spray liquid in the liquid line system, according to a further aspect of the invention it can be provided that the liquid pump has an output of at least 200 liters per minute or at least 300 liters per minute or at least 400 liters per minute or at least 500 liters per minute.

In particular, it can be provided that the liquid pump has an output of 550 liters per minute.

The liquid pump has in particular a hydraulically and/or electrically operated motor and at least one impeller (e.g. impeller or the like).

According to a preferred development of the invention, it is provided that the container has a chamber which forms an overall container volume of the container.

It is possible for the container to form an overall container volume composed of a first container area and a second container area, with one container area in particular being formed by the projection, in particular the second container area being formed by the projection. It can thus preferably be provided that the first container area and the second container area form a chamber.

Alternatively or additionally, it is also possible for the second container area to form a volume which is at least 5% or at least 10% or at least 20% or at least 40% of the total container volume.

According to the invention, it is therefore expediently provided in particular that the projection has a volume which is at least 5% or at least 10% or at least 20% or at least 40% of the total volume of the container. For example, if the container has a total volume of 1,500 liters, the overhang thus has a volume of at least 75 liters or at least 150 liters or at least 300 liters or at least 600 liters.

An improved arrangement of the center of gravity can be achieved according to a development in that the area of the cantilever arranged in front of the coupling point plane forms a cantilever volume which cantilever volume has at least 100 liters or at least 200 liters or at least 300 liters or at least 500 liters.

In order to achieve a collision-free connection of the mounted field sprayer with a tractor, according to a development of the invention, it can be provided that a lower projection surface of the projection has a minimum distance from a lower edge of the container, which minimum distance is at least 0.25 meters or at least 1 meter or at least 1.5 meters is.

Alternatively or in addition, it can also be provided that the lower projection surface is inclined relative to the direction of travel from top front to bottom rear, preferably at a first angle of inclination β of essentially at least 10° or at least 20° or at least 45° and/or that this has an at least partially arcuate course.

In order not to impair an operator's field of vision during field travel, it is According to a development of the invention, it is possible for the projection to have an upper projection surface which is inclined relative to the direction of travel from the front below to the rear and above, preferably at a second angle of inclination γ of essentially at least 45° or at least 60° or at least 75° and/or that it has an arcuate course, at least in sections.

In order to improve the field of vision for an operator while driving in a field, according to a further embodiment variant of the invention, a front overhang surface of the overhang has an at least partially arcuate profile transverse to the direction of travel, in particular an arcuate profile oriented opposite to the direction of travel and/or wherein the vertex and/or the vertex surface of the arcuate profile is located in the area of the maximum extension of the projection in the direction of travel in front of the coupling point plane.

In order to optimize the center of gravity even further, it is possible according to a development of the invention that the maximum extension of the projection in the direction of travel in front of the coupling point level is at least 10 cm or at least 20 cm or at least 40 cm or at least 60 cm. In particular, it can be provided that the maximum extent is essentially 25 cm.

In order to ensure a sufficiently large attachment space for the upper coupling point with the tractor, it is possible, according to a further embodiment variant, for the overhang to have its maximum extension in the direction of travel in front of the coupling point level at a second distance from the upper coupling point, with the second distance being at least 10 cm or is at least 20cm and is a maximum of 100cm or a maximum of 150cm.

In order to achieve an arrangement of the center of gravity of the mounted field sprayer even further in the direction of the tractor, it is also possible according to a development of the invention for the container in the area of the upper coupling point and/or the two lower coupling points to have a recess oriented opposite to the direction of travel (e.g. recess , Recess, groove and/or the like.) Has. The recess can preferably have at least one or more (e.g. three) recess surfaces which can be formed, for example, by a rear wall and/or a left side wall and/or a right side wall and/or a top wall.

Alternatively or additionally, it is also possible here for the recess to have an extension in relation to the coupling point plane that is at least 10 cm or at least 50 cm or at least 75 cm.

Alternatively or additionally, it is also possible for the recess to have a maximum width that is at least 5% or at least 25% or at least 50% wider than a maximum distance between the two lower coupling points and/or for the recess to have a recess height , which is at least 5% or at least 25% or at least 50% higher than a vertical distance between the two lower coupling points and the upper coupling point.

In order to achieve an even better center of gravity, it is possible for the container to be designed and/or arranged on the frame construction in such a way that a lower edge (e.g. lowest point) of the container is arranged in relation to the direction of travel above the two lower coupling points and the The resulting vertical container distance is a maximum of 20 cm or a maximum of 10 cm or a maximum of 5 cm and/or that a lower edge of the container relative to the direction of travel is at least largely at the same height as the lower coupling points and/or that a lower edge of the container relative to the direction of travel is below the two lower crosspoints is arranged. The lower edge can be formed, for example, by an outlet opening of the container.

The container can in particular be manufactured in one piece integrally by a rotation process.

• 1A eine Perspektivansicht eines Traktors mit einer daran angebauten Anbaufeldspritze und einem daran angebauten Anbaubehälter, wobei die Anbaufeldspritze ein Spritzgestänge in einer zusammengeklappten Transportposition aufweist,
• 1B eine Perspektivansicht gemäß der 1A, wobei die Anbaufeldspritze ein Spritzgestänge in einer ausgeklappten Arbeitsposition aufweist,
• 1C eine Seitenansicht gemäß der 1A,
• 2A eine Perspektivansicht einer Anbaufeldspritze sowie eine schematisch dargestellte Dreipunktverbindung eines Traktors, mit einer mit dieser verbundenen Koppeleinrichtung, wobei die Dreipunktverbindung in einem ersten Abstand zur Anbaufeldspritze angeordnet ist,
• 2B eine Perspektivansicht gemäß der 2A wobei die Dreipunktverbindung in einem zweiten Abstand zur Anbaufeldspritze angeordnet ist,
• 3A eine Perspektivansicht einer Anbaufeldspritze mit einer Rahmenkonstruktion, einem Behälter, einem Spritzgestänge und einer Flüssigkeitspumpe,
• 3B eine Seitenansicht einer Anbaufeldspritze gemäß der 3A,
• 4A eine Vorderansicht einer Ausführungsvariante einer Flüssigkeitspumpe,
• 4B eine Schnittansicht einer Flüssigkeitspumpe gemäß der 4A
• 5A - 5C Schematische Draufsichten einer Anbaufeldspritze mit verschiedenen Einbaupositionen einer Flüssigkeitspumpe,
• 5D eine Schematische Vorderansicht einer Feldspritze mit einer Flüssigkeitspumpe
• 6A eine Vorderansicht einer Anbaufeldspritze mit einer Rahmenkonstruktion, einem Behälter und einem Spritzgestänge,
• 6B eine Schnittansicht einer Anbaufeldspritze gemäß der 6A,
• 7A eine Perspektivansicht einer vereinfacht dargestellten Anbaufeldspritze mit einem Behälter und einer Rahmenkonstruktion,
• 7B - 7D eine Seitenansicht (7B), eine Vorderansicht (7C) und eine Draufsicht (7D) einer Anbaufeldspritze gemäß der 7A,
• 8A eine Perspektivansicht eines Behälters, insbesondere zur Verwendung an einer Anbaufeldspritze,
• 8B & 8C eine Vorderansicht (8B) und eine Seitenansicht (8C) eines Behälters gemäß der 8A,
• 9 ein Flüssigkeitsschema eines Feldspritzensystem mit einem Flüssigkeitsleitungssystem und zwei Mehrwegehähnen,
• 10 ein Flüssigkeitsschema eines Feldspritzensystem mit einer Flüssigkeitspumpe und mit durch Ventile gebildeten Ventilknoten.

Further details and advantages of the invention are described below with reference to the accompanying drawings. The proportions of the individual elements to one another in the figures do not always correspond to the real proportions, since some forms are shown in simplified form and other forms are shown enlarged in relation to other elements for better illustration. Show it:

• 1A a perspective view of a tractor with a mounted field sprayer and a mounted container mounted thereon, the mounted field sprayer having a spray boom in a folded transport position,
• 1B a perspective view according to FIG 1A , wherein the mounted field sprayer has a spray boom in an unfolded working position,
• 1C a side view according to FIG 1A ,
• 2A a perspective view of a mounted field sprayer and a schematically illustrated Three-point connection of a tractor with a coupling device connected to it, the three-point connection being arranged at a first distance from the mounted field sprayer,
• 2 B a perspective view according to FIG 2A wherein the three-point connection is arranged at a second distance from the mounted field sprayer,
• 3A a perspective view of a mounted field sprayer with a frame structure, a container, a spray boom and a liquid pump,
• 3B a side view of a mounted field sprayer according to 3A ,
• 4A a front view of a variant of a liquid pump,
• 4B a sectional view of a liquid pump according to FIG 4A
• 5A - 5C Schematic top views of a mounted field sprayer with different installation positions of a liquid pump,
• 5D a schematic front view of a field sprayer with a liquid pump
• 6A a front view of a mounted field sprayer with a frame structure, a container and a spray boom,
• 6B a sectional view of a mounted field sprayer according to 6A ,
• 7A a perspective view of a simplified mounted field sprayer with a container and a frame construction,
• 7B - 7D a side view (7B), a front view (7C) and a top view (7D) of a mounted field sprayer according to FIG 7A ,
• 8A a perspective view of a container, in particular for use on a mounted field sprayer,
• 8B & 8C a front view (8B) and a side view (8C) of a container according to FIG 8A ,
• 9 a fluid diagram of a field sprayer system with a fluid line system and two multi-way valves,
• 10 a liquid diagram of a field sprayer system with a liquid pump and with valve nodes formed by valves.

The in the 1 until 10 The embodiments shown correspond at least in part, so that similar or identical parts are provided with the same reference numbers and, for their explanation, reference is also made to the description of the other embodiments or figures in order to avoid repetition. The illustrated embodiments only represent examples of how the mounted field sprayer according to the invention and the method according to the invention can be designed and implemented and do not represent any final limitation.

the 1A and 1B show each in a perspective view, as well as the 1C in a side view, a mounted field sprayer 10 and a mounted container 12 mounted on a tractor 14. Wherein the mounted field sprayer 10 each has a spray boom 16, which according to the 1A and 1C is shown in a folded transport position and which according to the 1B is shown in an unfolded working position extending in a large working width transversely to the direction of travel FR.

The mounted field sprayer 10 comprises a tank 22 attached to a frame structure 18, or first tank 22 for spray liquid to be distributed. The add-on container 12 comprises a support structure 20 with a second container 24 for spray liquid to be distributed attached thereto. The container 22, that is to say the first container 22 and the second container 24, are thus mounted on a tractor 14 at a distance from one another.

It should be noted that both the first container 22 and the second container 24 may have an overhang as described herein.

To distribute the spray liquid, distribution elements 28, in particular in the form of spray nozzles (e.g. for atomizing the spray liquid), are attached to the spray boom 16 at regular intervals, which are expediently connected to the first container 22 and/or the second container, in particular by means of a liquid line system (not shown here). Container 24 are operatively connected, in particular fluidically operatively connected.

In a working position, the spray boom 16 has a large working width of, for example, 12 meters; 21 meters or more. The sprayer boom 16 also includes a center part 30 and side parts 34 mounted on the left and right of the center part 30 by means of pivot axes 32, which are oriented particularly upright in the working position. The side parts 34 can be pivoted accordingly relative to the center part 30 to achieve a transport position.

In order to achieve an optimized weight distribution on a tractor 14, according to Aus Exemplary embodiments provide that the mounted field sprayer 10 has a frame construction 18 with an upper coupling point 36 and two lower coupling points 38, in particular for coupling to the upper link 40 and the lower links 42 of the rear three-point connection 44 (e.g. three-point power lift) of a tractor 14.

In addition to this, it is also provided that the attachment container 12 is designed as a front attachment and a support structure 20 which has an upper coupling point 36 and/or one or two lower coupling points 38, in particular for coupling to a front towing device (e.g. bolt connection, two-point connection) and/or Has three-point linkage 44 of a tractor 14 .

Additional features of a mounted sprayer 10 and a three-point linkage 44 are apparent from the perspective views of FIGS 2A and 2 B out. The upper coupling point 36 and the two lower coupling points 38 are designed and arranged in relation to one another such that they form a commercially available three-point connection 44 or three-point hitch, in particular a three-point connection for connection to a three-point power lift in accordance with ISO 730-1. According to the 2 it is provided that the upper coupling point 36 and/or the lower coupling points 38 are designed in such a way that they can be coupled to a coupling device 46 (e.g. coupling triangle) and, in turn, the three-point connection 44 of a tractor 14, which is shown in a greatly simplified embodiment variant, with which Coupling device 46 can be coupled. According to the present description, such a coupling of the mounted field sprayer 10 or the mounted container 12 with a tractor 14 is also included.

The upper coupling point 36 and the two lower coupling points 38 are formed on the frame construction 18 by receptacles for a bolt of a coupling device 46, for example. Other design variants of an upper coupling point 36 and/or the two lower coupling points 38 would also be conceivable or imaginable.

From the 2A and 2 B a method for attaching a mounted field sprayer 10 to a tractor 14 is also illustrated. What is expediently achieved in particular is that dangerous situations for an operator due to restricted space when attaching the mounted field sprayer 10 to a tractor can be avoided. This is according to the 2A and 2 B achieved by no cardan shaft, that is, no mechanical power source between mounted field sprayer 10 and tractor 14 must be installed. Thus, it is provided in particular that a mounted on the field sprayer 10, according to the 2A and 2 B greatly simplified liquid pump 48, by a liquid pump 48 that can be operated exclusively with a hydraulic and/or electrical energy supply, in particular a power source (e.g. articulated shaft) of a tractor 14 that can be operated without mechanical movements (e.g. rotary movements).

How from the 2A and 2 B It is thus clear that the liquid pump 48 requires in particular only one or more line connections 52 (e.g. electrical lines, hydraulic lines and/or the like) to an energy supply 54 (e.g. energy supply unit such as a motor, pump or the like) which is shown here in greatly simplified form. a tractor 14.

In order to avoid dangerous situations when attaching the mounted field sprayer 10 to a tractor 14 for an operator, according to 2A First, a first distance D1 is created between the tractor 14 and the mounted field sprayer 10, with the three-point connection 44 of the tractor being connected to the coupling device 46 and the hydraulic and/or electrical energy supply 54 being connected to the liquid pump 48, in particular by means of a line connection 52, he follows. This takes place with the first distance D1 being maintained at least to a large extent. In addition, the lines of the line connection 52 are designed to be correspondingly long.

After connecting the three-point connection 44 with the coupling device 46 and the power supply 54, according to the 2 B the generation of a second distance D2 of the tractor 14 to the mounted field sprayer 10, in particular by bringing the tractor 14 up to the mounted field sprayer 10, with the coupling device 46 connected to the tractor 14 also being coupled to the upper coupling point 36 and the two lower coupling points 38 of the mounted field sprayer 10 done.

The first distance D1 and the second distance D2 are defined by a distance in the direction of travel FR of the lower links 42 of the tractor 14 to the lower coupling points 38 of the mounted field sprayer 10, this being done in such a way that a first distance D1 is greater than a second distance D2, and in particular takes place in such a way that a first distance D1 is at least 10 cm or at least 20 cm or at least 50 cm. Where according to the 2 B the second distance D2 is in particular 0 cm.

Further details of a mounted field sprayer 10 can be seen from the perspective view 3A and the side view 3B. The mounted field sprayer 10 includes each having a frame construction 18 with a container 22 (e.g. first container 22) for spray liquid to be distributed, a spray boom 16 and a liquid pump 48. The liquid pump 48 is used to convey spray liquid by means of a liquid line system from the container 22 to distribution elements 28 arranged on the spray boom 16.

The liquid pump 48 is attached to the frame structure 18 of the mounted field sprayer 10, in particular in this way, ie according to the exemplary embodiments far below, in order to create an optimized center of gravity for the container 22, with the liquid pump 48 here being able to have a wide variety of orientations, and according to the 3A and 3B is oriented transversely to the direction of travel FR.

In order to achieve an optimized, that is to say in particular a low-lying focus of the mounted field sprayer 10, it is 3B possible or provided that a lower edge 64 of the container 22 is arranged below the two lower coupling points 38 . Alternatively, however, it would also be possible for a lower edge 64 of the container 22 to be arranged above the two lower coupling points 38 in relation to the direction of travel FR and for the resulting vertical container spacing to be a maximum of 50 cm or a maximum of 20 cm or a maximum of 10 cm or a maximum of 5 cm and/or that a lower edge 64 of the container 22 is arranged at least largely at the same height as the lower coupling points 38 relative to the direction of travel FR. The lower edge 64 can be formed, for example, by an outlet opening of the container 22 .

A variant of a liquid pump 48 is from the front view of 4A as well as from the sectional view of the 4B out.

The liquid pump 48 is set up in particular to ensure that any delivery and/or rearrangement (e.g. circulation) of spray liquid in the liquid line system is carried out by means of it and no further liquid pump 48 is absolutely required on the mounted field sprayer 10 .

The liquid pump 48 according to the 4A and 4B is designed as a centrifugal pump. However, it would also be conceivable, for example, to use piston diaphragm pumps or the like.

As seen from the front view of the 4A and the sectional view of the 4B shows that liquid pump 48 has a motor 56 that can be operated exclusively with a hydraulic and/or electrical power supply and at least one drive shaft 58 coupled to motor 56, drive shaft 58 preferably having a pump wheel 60 (e.g. impeller) and/or having a pump wheel 60 (e.g. impeller) is coupled (e.g. by means of an angle gear) (see 4B) .

In order to achieve the best possible installation position of the liquid pump 48 on the mounted field sprayer 10, in particular in order to achieve a good center of gravity for the mounted field sprayer 10, it can have a wide variety of installation positions or orientations. Where options for installation positions from the schematic plan views of 5A until 5C and from the schematic front view of 5D emerge. A highly simplified view of a container 22, an upper coupling point 36, two lower coupling points 38 and a liquid pump 48 are shown in each case.

It should be noted that in the 5A until 5D center line 62 outlined in each case, in particular an orientation of the drive shaft 58 (cf. 4B) corresponds and wherein an orientation of the drive shaft 58 defines a longitudinal extent of the liquid pump 48 in each case.

How from the 5A and 5B shows that the liquid pump 48 has a longitudinal extension, which longitudinal extension is defined by an orientation of a drive shaft 58 rotating in the liquid pump 48, the liquid pump 48 relative to a direction of travel FR of the mounted field sprayer 10 with its entire longitudinal extension between the two lower coupling points 38 and at least largely (cf. 5A and 5B) is arranged with its longitudinal extent laterally (for example on the left) next to the upper coupling point 36 .

An alternative arrangement to this is shown in FIG 5C wherein the liquid pump 48 is arranged relative to the direction of travel FR of the mounted field sprayer 10 over its longitudinal extension at least in sections next to (ie outside of) one of the two lower coupling points 38 . It would also be conceivable for the liquid pump 48 to be arranged with its entire length outside of one of the two lower coupling points 38 .

It is also conceivable that the liquid pump 48 is oriented at a first angle α to a direction of travel FR, with the first angle α being at least 5° or at least 25° or at least 45° (cf. 5A) and wherein the first angle α is a maximum of 175° or a maximum of 155° or a maximum of 135°, in particular essentially 90° (cf. 5B) amounts to.

An alternative or supplementary orientation comes from the 5D wherein the at least one liquid pump 48 is oriented from top to bottom relative to a plane (e.g. formed by a front side of container 22) perpendicular to the direction of travel FR of mounted field sprayer 10 from an upper coupling point 36 of mounted field sprayer 10 to an outer end of mounted field sprayer 10 is (cf. 5D ), but an at least largely horizontal orientation would also be conceivable and/or an orientation from bottom to top.

Further details, in particular of a tank for a mounted field sprayer, can be seen from the front view 6B and the sectional view 6C, the section in FIG 6B is shown. In addition, the perspective view 7A, the side view 7B, the front view 7C and the top view 7D show a mounted field sprayer 10 with a container 22 and a frame structure 18 in a simplified form. In addition, the perspective view 8A, the front view 8B and the side view 8C show another embodiment variant a container 22 with a projection 78, which can be used in particular on a mounted field sprayer 10 and/or a mounted container 12.

The mounted field sprayer 10 each includes a frame construction 18, which has an upper coupling point 36 and two lower coupling points 38, in particular for coupling (e.g. direct or indirect connection) to the upper link 40 and the lower links 42 of the three-point connection 44 of a tractor 14. The mounted field sprayer 10 also includes a container 22 for spray liquid to be distributed.

In order to achieve a container 22 with a large container volume and an optimized center of gravity, it is provided that the container 22 has a projection 78, the maximum extension ME of which is arranged above the upper coupling point 36 and the maximum extension ME in the direction of travel FR in front of one perpendicular to the direction of travel FR, intersecting the upper crosspoint 36 and/or running through the midpoint of the upper crosspoint 36 (cf. 6B) Crosspoint level KE is located.

It can be provided that the maximum extent ME of the projection 78 in the direction of travel FR in front of the coupling point plane KE is at least 10 cm or at least 20 cm or at least 40 cm or at least 60 cm. In particular, it can be provided that the maximum extension ME is essentially 25 cm.

How from the 6 until 8th shows, the container 22 has in particular a chamber 80 which forms the total volume of the container 22 .

Provision is also made for container 22 to form an overall container volume composed of a first container area 82 and a second container area 84, with one container area in particular being formed by the projection 78, preferably the second container area 84 being formed by the projection 78. The first container area 82 and the second container area 84 form a chamber 80 .

The second container area 84 or the projection 78 preferably forms a volume which is at least 5% or at least 10% or at least 20% or at least 40% of the total container volume. If the container 22 has, for example, a total volume of 1,500 liters and the projection 78 has a volume of 20% of the total volume of the container 22, the projection 78 thus has a volume of at least 300 liters.

Alternatively or additionally, it would also be conceivable for the area of the cantilever arranged in front of the coupling point plane KE to form a cantilever volume VA, which cantilever volume has at least 100 liters or at least 200 liters or at least 300 liters or at least 500 liters.

The overhang 78 has a lower overhang surface 86, the lower overhang surface 86 having a minimum distance MA from a bottom edge 64 of the container 22, which minimum distance MA is at least 0.25 meters, or at least 1 meter, or at least 1.5 meters.

The lower projection surface is inclined relative to the direction of travel FR from front top to rear bottom, preferably at a first angle of inclination β of essentially at least 10° or at least 20° or at least 45°, alternatively or additionally it can be provided that this is at least partially arcuate history.

The projection 78 also includes an upper projection surface 88, which is inclined relative to the direction of travel FR from the front below to the rear and above, preferably at a second angle of inclination γ of essentially at least 45° or at least 60° or at least 75°, alternatively or additionally it can be provided that this has an arcuate course, at least in sections (cf. 8C ).

The overhang 78 further includes a front overhang surface 90, which has an at least partially arcuate course transversely to the direction of travel FR, according to the 7D has an arcuate profile oriented in particular opposite to the direction of travel FR and/or wherein the vertex and/or the apex surface 92 of the arcuate profile is located in the area of the maximum extension ME of the projection 78 in the direction of travel FR in front of the coupling point plane KE.

According to the exemplary embodiments, it is also provided that the projection 78 has its maximum extension ME in the direction of travel FR in front of the coupling point plane KE at a projection distance AA from the upper coupling point 36, the projection distance AA being at least 10 cm or at least 20 cm and a maximum of 100 cm or a maximum of 150 cm.

In the region of the upper coupling point 36 and the two lower coupling points 38, the container 22 has a recess 94 oriented opposite to the direction of travel FR. The recess 94 has at least three recess surfaces 96, which are formed by a rear wall and by a left and a right side wall. Other return surfaces would also be conceivable. The setback has an expansion AD in relation to the coupling point plane KE, which is at least 10 cm or at least 50 cm or at least 75 cm.

Alternatively or additionally, it is possible for the recess 94 to have a maximum width MB that is at least 5% or at least 25% or at least 50% wider than a maximum distance between the two lower coupling points 38 and/or for the recess to have a recess height RH which is at least 5% or at least 25% or at least 50% higher than a perpendicular distance SA between the two lower coupling points 38 and the upper coupling point 36.

Variants of liquid line systems 100, or field spraying systems 110 go from the liquid diagrams 9 and 10 out. where the 9 two liquid line nodes 130 which are formed by multi-way valves 66 and wherein in the

10 the multi-way cocks 66 have been replaced by liquid line nodes 130 each having at least two valves 120 .

The field sprayer system 110 comprises a first container 22 for spray liquid to be distributed, which is assigned in particular to a mounted field sprayer 10, and a second container 24 for spray liquid to be distributed, which is assigned in particular to a mounted container 12 (cf. 1A - 1C ). The field sprayer system 110 or the mounted field sprayer 10 includes a spray boom 16 with distribution elements 28 (eg spray nozzles) for the distribution of the spray liquid. For this purpose, the distribution elements 28 preferably produce a spray cone pointing downwards.

The first container 22, the second container 24 and the distribution elements 28 are functionally (e.g. fluidly) connected by means of a liquid line system 100. The spray liquid is also conveyed and/or relocated (eg circulated between the first container 22 and the second container 24) by means of a liquid pump 48 through the liquid line system 100 .

The liquid line system 100 according to the 9 and 10 is designed and set up in such a way that the conveying and/or relocation takes place by means of a liquid pump 48 .

The field sprayer system 110 according to the exemplary embodiments is in particular a closed field sprayer system 110, so that the liquid line system 100 and the liquid pump 48 mean that the first container 22 and the second container 24 act like a single container.

The liquid pump 48 is set up in particular to convey spray liquid from the first container 22 and/or the second container 24 to the distribution elements 28 at the same time (i.e. simultaneously, jointly and/or the like) by means of the liquid line system 100 . Alternatively or additionally, it can be provided that the liquid pump 48 is set up to simultaneously transfer spray liquid from the first container 22 to the second container 24 and/or from the second container 24 to the first container 22 by means of the liquid line system 100 (e.g. to circulate ).

The liquid pump 48 has a suction side 140 and a pressure side 150 which are each operatively connected to the liquid line system 100 . Whereby the flow direction of the spray liquid in the liquid line system 100 is defined by the suction side 140 or the pressure side 150, which according to the 9 and 10 with arrows oriented in the direction of the liquid pump 48 or away from the liquid pump 48.

The amount of spray liquid delivered by liquid pump 48 can be measured by flow measurement, i.e. flow control, or by pressure control, for which purpose appropriate sensors 200 (e.g. pressure sensors, volume flow sensors, and/or the like) can be installed in liquid line system 100 and the flow control or the pressure control can take place in a manner known per se.

In order to create a field sprayer system 110 that can be used flexibly, according to the exemplary embodiments of FIG 9 and 10 provided that the field sprayer system 110 comprises a third container 26 for spray liquid to be distributed, which is operatively connected to the first container 22 and the second container 24 and the liquid pump 48 by means of the liquid line system 100 .

To even with three containers 22; 24; 26 requires only one liquid pump 48, provision is made for the liquid pump 48 to be set up to simultaneously (e.g. simultaneously, jointly and/or the like) spray liquid from the first container 22 and/or the second container 24 and/or the third container 26 by means of the liquid line system 100 to the distribution elements 28 and/or to transfer spray liquid from the first container 22 to the second container 24 by means of the liquid line system 100 and/or to transfer the third container 26 and/or to transfer spray liquid by means of the liquid line system 100 from the second container 24 into the first container 22 and/or the third container 26 and/or to transfer spray liquid from the third container 26 into the first container 22 and/or the second container 24 by means of the liquid line system 100 .

It is possible for an identical first spray liquid to be carried in the first container 22 and in the second container 24 and for a second spray liquid which differs from the first spray liquid to be carried in the third container 26 .

At least two liquid lines are combined to form a liquid line node 130 on a suction side 140 and a pressure side 150, wherein according to FIG

9 these liquid line nodes 130 are connected in a manner known per se by means of a multi-way valve 66. In contrast, according to the 12 the liquid line nodes 130 are formed by at least two valves 120. The valves 120 can preferably be switched and/or controlled electrically and/or pneumatically by means of a control device 170 . How from the 9 and 10 As can be seen, the liquid line nodes 130 can each comprise and/or have a multiplicity of liquid lines.

It should be noted that according to the 10 For the sake of clarity, only the signal lines 180 (dashed lines) from some components (e.g. valves 120) are routed to the control device 170, with the signal lines 180 of course also being connected from other valves 120 and/or from other components of the field sprayer system 110 in a manner known per se to the Control device 170 coupled and / or signal-connected.

Control device 170 can have a computer unit, an on-board computer and/or the like and also have a control circuit and/or regulating circuit, in particular a hydraulic and/or pneumatic and/or electrical control circuit and/or regulating circuit, with the control circuit and/or regulating circuit being expedient is designed for hydraulic and/or pneumatic and/or electrical signal and/or command transmission. Which signal and/or command transmission can also take place wirelessly (e.g. via WLAN). A BUS system can also be used here.

In the context of the description, the term control device 170 includes, in particular, all of the components for signal and/or command transmission. Accordingly, computer units, CPUs and/or the like are also included. Correspondingly, data processing devices integrated in the respective sensors, or sensor units, or sensor arrangements are also included. It should also be pointed out that the sensors/measuring devices/detection devices etc. can each be used as feedback for a control and/or regulation variable.

In order to enable easy filling of the first container 22 and/or the second container 24 and/or the third container 26, it is provided according to the exemplary embodiments that the liquid line node 130 has a suction connection 190 (e.g. filling connection, suction valve and/or the like.). is assigned to a valve 120 and/or a check valve 210, wherein the intake port 190 is operatively connected to the first container 22, the second container 24, the third container 26 and the liquid pump 48 by means of the liquid line system 100, and wherein the valve 120 and/or check valve 210 can be switched and/or controlled by means of control device 170.

The valves 120 can expediently be switched between a closed position and an open position, with an open position according to the invention being able to include, in addition to a complete opening, also positions in which there is no complete opening, but liquid passage is still possible compared to the closed position, with this position expediently being controlled by means of a Control device 170 is controllable.

At least one valve 120 can be a directional control valve (eg switchable) and/or a proportional valve (eg controllable) and/or a quantity control valve (eg controllable). It is alternatively or additionally possible that at least one valve 120 is designed as a check valve 210, which according to the 9 and 10 is shown as an example.

According to the exemplary embodiments, the first container 22 and the second container 24 are assigned an agitator 220 for mixing the spray liquid contained in the first container 22 and in the second container 24, with the functionality (e.g. switching on or off, variable speed and/or etc.) of the agitator 220 by means of the control device 170 can be switched and/or controlled (e.g. speed).

The liquid line node 130 according to the 10 comprises a valve 120, which can be switched and/or controlled by means of a control device 170, for the selective fluid connection of the first container 22 to the liquid pump 48. In addition, the liquid line node 130 comprises a valve 120, which can be switched and/or controlled by means of a control device 170, for the selective fluid connection of the second container 24 with the liquid pump 48.

It is possible for the liquid line node 130 or the valves 120 or the multi-way tap 66 to have connection points 70 with different cross sections.

The first container 22 and the second container 24 are connected to a suction side 140 and/or a pressure side 150 of the liquid pump 48 by means of the liquid line system 100, but the distribution elements 28 are only connected to a pressure side 150 of the liquid pump 48 by means of the liquid line system 100.

Liquid line system 100 includes a first liquid line 230 for connecting first container 22 to a suction side 140 of liquid pump 48, liquid line system 100 also includes a second liquid line 240 for connecting first container 22 to a pressure side 150 of liquid pump 48, the liquid line system also includes 100 has a third liquid line 250 for connecting the second container 24 to a suction side 140 of the liquid pump 48, and the liquid line system 100 also includes a fourth liquid line 260 for connecting the second container 24 to a pressure side 150 of the liquid pump 48. It is also provided that the liquid line system 100 has a fifth liquid line 270 for connecting the distribution elements 28 to a pressure side 150 of the liquid pump 48 .

The liquid lines 230; 250 of the suction side 140 form a liquid line node 130 and the liquid lines 240; 260; 270 of the pressure side 150 form a liquid line node 130.

The first liquid line 230, the second liquid line 240, the third liquid line 250, the fourth liquid line 260 and the fifth liquid line 270 each have a valve 120 for the selective operative fluid connection of the first container 22 and/or the second container 24 and/or the distribution elements 28 associated with the pressure side 150 of the liquid pump 48 and/or the suction side 140 of the liquid pump 48 .

In order to be able to maintain a desired filling level in the first container 22 and/or in the second container 24, it is conceivable according to a development of the invention that the first container 22 and the second container 24 each have a sensor device 280 that detects a filling level (e.g. capacitive measuring device, float switch and/or the like.) and that the valves 120 assigned to the liquid pump 48 and/or the liquid line system 100 can be switched and/or controlled by means of a control device 170 on the basis of a respective fill level. The control device 170 is set up so that the liquid pump 48 and/or the valves 120 can be actuated using various strategies, in particular in such a way that a defined differential filling level is generated between the first container 22 and the second container 24 and/or in such a way that that a maximum rearrangement of the spray liquid of the first container 22 takes place in the second container 24 or vice versa.

In order to prevent the first container 22 and/or the second container 24 from overflowing, it is provided that the liquid line system 100 has an overflow line 290 for connecting the first container 22 to the second container 24, the overflow line 290 preferably being located in an upper region in each case the first container 22 and the second container 24 opens. In particular, no valves and/or switching elements or the like are assigned to the overflow line 290 in order to prevent clogging or the like.

Although the invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that various changes can be made NEN and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications can be made without leaving the associated area. Accordingly, the invention should not be limited to the disclosed embodiments, but should include all embodiments falling within the scope of the appended claims. In particular, the invention also claims protection for the subject matter and the features of the subclaims independently of the claims referred to.

Reference List

10

mounted sprayer

12

grow tank

14

tractor

16

spray boom

18

frame construction

20

support structure

22

first container; container

24

second container

26

third container

28

distribution element

30

center part

32

pivot axis

34

side panel

36

upper crosspoint

38

lower crosspoint

40

top link

42

lower link

44

three-point connection

46

coupling device

48

liquid pump

52

line connection

54

power supply

56

engine

58

drive shaft

60

midline; impeller

64

Deepest point; bottom edge

66

multi-way tap

78

cantilever

80

chamber

82

first container area

84

second container area

86

lower cantilever surface

88

upper cantilever surface

90

front cantilever surface

92

apex; crest surface

94

return

96

return surface

100

liquid line system

110

sprayer system

120

Valve

130

liquid line node

140

suction side

150

pressure side

160

liquid line

170

control device

180

signal line

190

intake port

200

sensor

210

check valve

220

agitator

230

first liquid line

240

second liquid line

250

third liquid line

260

fourth liquid line

270

fifth liquid line

280

sensor device

290

overflow line

FR

driving direction

B.A

vertical tank spacing

D1

first distance

D2

second distance

aa

overhang distance

ME

Maximum Extension

MA

minimum distance

AD

expansion

MB

Maximum width

SA

perpendicular distance

RH

rebound height

KE

coupling level

v.a

overhang volume

a

first angle

β

first angle of inclination

g

second angle of inclination

QUOTES INCLUDED IN DESCRIPTION

This list of the documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 0403859 A1 [0002]

Claims (16)

Mounted field sprayer (10) with a frame construction (18) which has an upper coupling point (36) and two lower coupling points (38), in particular for coupling to the upper link (40) and the lower links (42) of the three-point connection (44) of a tractor (14 ), and having at least one container (22) for spray liquid to be distributed, characterized in that the container (22) has a projection (78) whose maximum extension (ME) is arranged above the upper coupling point (36) and whose maximum Extension (ME) in the direction of travel (FR) in front of a crosspoint plane (KE) perpendicular to the direction of travel (FR), intersecting the upper coupling point (36) and/or running through the center point of the upper coupling point (36). Mounted field sprayer (10) after claim 1 , characterized in that the container (22) has a chamber (80) which forms a total container volume of the container (22). Mounted field sprayer (10) according to one of the preceding claims, characterized in that the container (22) forms an overall container volume composed of a first container area (82) and a second container area (84), wherein in particular a container area (82; 84) is formed by the Projection (78) is formed, in particular the second container area (82) is formed by the projection (78). Mounted field sprayer (10) after claim 3 , characterized in that the second container area (82) forms a volume which has at least 5% or at least 10% or at least 20% or at least 40% of the total container volume. Mounted field sprayer (10) according to one of the preceding claims, characterized in that the area of the projection (78) arranged in front of the coupling point plane (KE) forms a projection volume (VA), which projection volume (VA) is at least 100 liters or at least 200 liters or at least 300 liters or at least 500 liters. Mounted field sprayer (10) according to one of the preceding claims, characterized in that a lower projection surface (86) of the projection (78) has a minimum distance (MA) to a lower edge (64) of the container (22) which is at least 0.25 meters or is at least 1 meter or at least 1.5 meters. Mounted field sprayer (10) after claim 6 , characterized in that the lower projection surface (86) is inclined relative to the direction of travel (FR) from the front up to the rear down, preferably at a first angle of inclination (β) of essentially at least 10° or at least 20° or at least 45° and/or that it has an arcuate course, at least in sections. Mounted field sprayer (10) according to one of the preceding claims, characterized in that the projection (78) has an upper projection surface (88) which is inclined from the front below to the rear above relative to the direction of travel (FR), preferably at a second angle of inclination (γ ) of essentially at least 45° or at least 60° or at least 75° and/or that it has an at least partially arcuate course. Mounted field sprayer (10) according to one of the preceding claims, characterized in that a front projection surface (90) of the projection (78) transversely to the direction of travel (FR) has an at least partially arcuate course, in particular an arcuate course oriented opposite to the direction of travel (FR). and/or wherein the vertex and/or the vertex surface (92) of the arcuate course is located in the area of the maximum extension (ME) of the projection (78) in the direction of travel (FR) in front of the coupling point plane (KE). Mounted field sprayer (10) according to one of the preceding claims, characterized in that the maximum extension (ME) of the projection (78) in the direction of travel (FR) in front of the coupling point plane (KE) is at least 10 cm or at least 20 cm or at least 40 cm or at least 60 cm. Mounted field sprayer (10) according to one of the preceding claims, characterized in that the projection (78) has its maximum extension (ME) in the direction of travel (FR) in front of the coupling point plane (KE) at a projection distance (AA) from the upper coupling point (36), where the overhang distance (AA) is a minimum of 10cm or a minimum of 20cm and a maximum of 100cm or a maximum of 150cm. Mounted field sprayer (10) according to one of the preceding claims, characterized in that the container (22) in the region of the upper coupling point (36) and/or the two lower coupling points (38) has a recess (94) oriented opposite to the direction of travel (FR). . Mounted field sprayer (10) after claim 12 , characterized in that the recess (94) has an extension (AD) relative to the coupling point level (KE) that is at least 10cm, or at least 50cm, or at least 75cm. Mounted field sprayer (10) after claim 12 , characterized in that the recess (94) has a maximum width (MB) which is at least 5% or at least 25% or at least 50% wider than a maximum distance between the two lower coupling points (38) and/or that the recess (94) has a setback height (RH) which is at least 5% or at least 25% or at least 50% higher than a perpendicular distance (SA) of the two lower coupling points (38) to the upper coupling point (36). Mounted field sprayer (10) according to one of the preceding claims, characterized in that the container (22) is designed and/or arranged on the frame construction (18) in such a way that a lower edge (64) of the container (22) relative to the direction of travel (FR ) is arranged above the two lower coupling points (38) and the resulting vertical container spacing (BA) is a maximum of 20 cm or a maximum of 10 cm or a maximum of 5 cm and/or that a lower edge (64) of the container (22) relative to the direction of travel (FR ) is arranged at least largely at the same height as the lower coupling points (38) and/or that a lower edge (64) of the container (22) is arranged below the two lower coupling points (38) relative to the direction of travel (FR). Mounted field sprayer (10) according to one of the preceding claims, characterized in that the mounted field sprayer (10) for the distribution of spray liquid comprises distribution elements (28) which are operatively connected to the container (22) by means of a liquid line system (100) and that the mounted field sprayer ( 10) for conveying the spray liquid in the liquid line system (100) comprises a liquid pump (48), wherein the liquid pump (48) is a liquid pump (48) that can preferably be operated exclusively with a hydraulic and/or electrical energy supply (54), in particular one that operates without mechanical movements Power source of a tractor (14) operable liquid pump (48).

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