DE102009053213A1 - Telescopic spray bar for field spraying devices, has switching elements electrically or pneumatically activated by serial data bus system, where spray bar is formed as disk bar with drive protection device with partial segments - Google Patents

Abstract

The spray bar has nozzles (6) separately formed by switching elements in a switched manner. The switching elements are electrically or pneumatically activated by a serial data bus system, and the spray bar is formed as a disk bar with a drive protection device (7). The drive protection device consists of partial segments, which are displaced together. A controller of a field spraying device activates or deactivates the nozzles by a switching program according to stored field data. A holder is provided with the nozzles.

Description

The invention relates to a field sprayer with a spray boom with a central part and left and right side panel disposed on the middle part, each consisting sub-subgroups consisting of sub-segments with multiple nozzles, at least two sub-segments of a sub-segment group are slidably connected to each other and each sub-segment group outside assigned a collision is.

Such a field sprayer is the European patent application EP 1 813 150 A2 refer to.

If the working width or the spray width is reduced in this spray boom, subsegments are pushed into each other and shut off in the overlap area nozzles. Moving the sub-segments in all work situations is complicated and also requires a relatively high maintenance and lubrication. The present invention has the object to reduce this increased effort and to allow for different work situations each an optimum adjustment of the working width or spray width.

The object is achieved in that the nozzles are assigned switching elements, which are designed separately switchable that are selectively inserted either partial segments of the spray boom in reducing the working width of the sprayer and shut off in the overlapping region of the sub-segments of the spray boom nozzles or only the outer nozzle according to the Reduction of the working width can be switched off.

This design makes it possible, in field areas where no obstacles are found and a reduction of the working width or spray width is required to shut down the outside of the spray boom only the nozzles or sections that are not needed for the reduced working width. But it also makes it possible that in the field areas, where a reduction in the working width due to obstacles, fences, etc., the spray boom must be reduced in width that sections of the spray boom are mutually shifted so that the width of the spray boom total is reduced. In the sliding area of the sub-segments, the nozzles are then switched off, which could lead to an increase or doubling of the application rate.

Thus, in certain work situations, where z. As a reduction of the working width or injection width or the width of the sprayer boom is required, only the outer nozzles off, inserted sub-segments of the sprayer boom and switched off in the overlapping region of the nozzles of the sub-segments nozzles or where possible inserted the sub-segments as far as necessary and in addition a or more of the outer nozzles turned off. The fact that a shifting of the sub-segments only takes place when obstacles or where the width of the spray boom must be necessarily reduced, the maintenance costs are significantly reduced.

The invention also provides that the switching elements are electrically or pneumatically activated.

The switching elements of the nozzles can thus be actuated or activated in a conservative manner, depending on their construction, pneumatically or, more recently, as is usual.

According to the invention, it is further provided that the switching elements are designed to be switchable via a serial data BUS system.

By BUS so individual nozzles can be switched at any point without much effort. Each individual nozzle receives a unique address via a communication bus and can be addressed accordingly. As auxiliary power for actuating the switching elements of the nozzles then serves the already mentioned pneumatic or electrical.

The invention further provides that the first nozzle, which is arranged directly adjacent to a displaceable sub-segment, is designed such that the application rate of the nozzle and the spray cone during the displacement of the sub-segment with respect to width and angle are changed so that a uniform transverse distribution the spray is guaranteed.

So that when moving a sub-segments no areas left untreated or treated with a larger amount of liquid, the nozzle, which is located at the outer end of the subsegment which carries the movable subsegment, set at the overlap of the spray cone so that largely given an exact transverse distribution is.

The invention further provides that a holder is provided with a plurality of different nozzles, which is arranged directly adjacent to a displaceable sub-segment and that when moving the sub-segment in each case the nozzle is turned on, which ensures a uniform transverse distribution of the spray with respect to width, angle and Ausbringmenge ,

This embodiment does not require a more complicated adjustable nozzle as previously mentioned. For example, via a servomotor, the nozzle is automatically brought into position and turned on, which comes for the reached shift position during the displacement of a sub-segment in the overlap region of a uniform transverse distribution of the spray closest.

The invention also includes the feature that the field sprayer has a control that via a switching program according to the stored field data, the nozzles GPS-enabled on and off, both on reaching the headland as well as in the edge region of the field.

According to the prior art, the nozzles of the spray boom can be switched on and off automatically, as it is optimal or useful for the present field contour.

It is further provided that the control of the field sprayer GPS-supported detects already processed field surfaces and when driving over these field surfaces arranged in the field of these field surfaces nozzles individually or in groups is automatically switched off.

Thanks to this embodiment of the control of the field sprayer ensures that each point of the field is treated only once with spray.

Further details and advantages of the invention will become apparent from the following description and the accompanying drawings, in which the subject invention is shown in outline. Show it:

1 a sketch of the outer sprayer boom in working position and

2 a plan view of the pushed-together spray boom.

1 shows the outer part 15 of the sprayer boom 1 with the subsegments 5 and the collision protection 7 in working position from the rear. The subsegment 16 becomes in relation to the subsegment 17 inserted and belongs among other things together with the subsegment 17 and the collision protection 7 to the subsegment group 4 that over the page frame 3 with the middle part 2 connected is. This is especially the 2 refer to. The middle part 2 is part of a lifting frame over which the sprayer boom 1 dug and can be lowered. At the subsegments 5 . 16 . 17 and at the collision protection 7 are the nozzles 6 which are separately switchable. When reducing the working width of the field sprayer, either the outer nozzles 12 switched off and or, for example, the sub-segment 16 in relation to the subsegment 17 inserted. At the same time, the nozzles will be at the same time 6 of the subsegment 16 shut off, located in the overlap area 10 the spray cone of the outer nozzle 13 of the subsegment 17 are located. The shutdown is done so that a good lateral distribution of the spray is ensured. The nozzle 13 can be changed in terms of spray cone and application rate so that the mentioned transverse distribution can really be achieved. This happens depending on the spray cone of the nozzle 6 of the subsegment 16 , which occur when moving the sub-segment 16 the nozzle 13 approaches. The corresponding nozzle 6 will turn off when the nozzle 13 has happened and remains switched off. If the working width is increased again, the corresponding nozzle 6 turned back on when the nozzle 13 again in the opposite direction has happened. All nozzles 6 . 12 . 13 are preferably accessible via a serial data BUS system and therefore as freely switchable as required.

The 2 illustrates the structure of the spray boom 1 with the page frame 3 and the middle part 2 , The page frame 3 is about the transverse joint 20 and the hydraulic cylinder 21 in the vertical direction pivotable with the middle part 2 connected. Depending on the application, the linkage can also be folded horizontally; the transverse axis 20 would then be replaced by an upright axis. On the side frame 3 is the inner subsegment 25 that is not movable. The subsegment 17 is displaceable with the subsegment 25 connected and the subsegment 16 in turn displaceable with the subsegment 17 , The collision protection 7 is for functional reasons in working position only to the rear and forward pivotally with the sub-segment 16 connected.

LIST OF REFERENCE NUMBERS

1

Spritzgestänge

2

midsection

3

side frame

4

Subsegment group

5

subsegment

6

jet

7

collision

10

overlap area

12

outer nozzles

13

first nozzle

15

outer part

16

subsegment

17

subsegment

20

transverse axis

21

hydraulic cylinders

25

subsegment

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• EP 1813150 A2 [0002]

Claims (7)

Sprayer with a sprayer boom ( 1 ) with a middle part ( 2 ) and left and right at the middle part ( 2 ) arranged side frames ( 3 ), each subsegment group ( 4 ), which consist of sub-segments ( 5 ) with several nozzles ( 6 ), wherein at least two subsegments ( 5 ) of a subsegment group ( 4 ) are slidably interconnected and each subsegment group ( 4 ) outside a collision protection ( 7 ), characterized in that the nozzles ( 6 ) Switching elements are assigned, which are designed separately switchable, that when reducing the working width of the field sprayer selectively either sub-segments ( 5 ) of the spray boom ( 1 ) and in the overlapping area ( 10 ) of the subsegments ( 5 ) of the spray boom ( 1 ) Nozzles ( 6 ) or only the outer nozzles ( 12 ) are switched off according to the reduction of the working width of the field sprayer. Field sprayer with a spray boom according to claim 1, characterized in that the switching elements are formed electrically or pneumatically activated. Field sprayer with a spray boom according to claim 1 and 2, characterized in that the switching elements are formed switchable via a serial data bus system. Field sprayer with a spray boom according to claim 1 to 3, characterized in that the first nozzle ( 13 ) directly adjacent to a displaceable subsegment ( 5 ) is arranged, is formed such that the application rate of the nozzle ( 13 ) and the spray cone during the movement of the sub-segment ( 5 ) are changed in width and angle so that a uniform transverse distribution of the spray is guaranteed. Field sprayer with a spray boom according to claim 1 to 4, characterized in that a holder is provided with a plurality of different nozzles which directly adjacent to a displaceable sub-segment ( 5 ) is arranged and that when moving the sub-segment ( 5 ) In each case the nozzle is turned on, which ensures a uniform transverse distribution of the spray with respect to width, angle and application rate. Field sprayer with a spray boom according to claim 1 to 5, characterized in that the field sprayer has a control, which via a switching program according to the stored field data, the nozzles ( 6 . 12 . 13 ) GPS supports on and off, both when reaching the headland and at the edge of the field. Field sprayer with a spray boom according to claim 1 to 6, characterized in that the control of the field sprayer GPS-supported detects already processed field surfaces and when driving over these field surfaces arranged in the field of these field surfaces nozzles ( 6 ) is formed individually or in groups automatically switched off.

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