NL2018401B1 - A spraying carriage for spraying plant leaves - Google Patents
A spraying carriage for spraying plant leaves Download PDFInfo
- Publication number
- NL2018401B1 NL2018401B1 NL2018401A NL2018401A NL2018401B1 NL 2018401 B1 NL2018401 B1 NL 2018401B1 NL 2018401 A NL2018401 A NL 2018401A NL 2018401 A NL2018401 A NL 2018401A NL 2018401 B1 NL2018401 B1 NL 2018401B1
- Authority
- NL
- Netherlands
- Prior art keywords
- cam
- nozzle support
- frame
- spraying
- wheel
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0025—Mechanical sprayers
- A01M7/0032—Pressure sprayers
- A01M7/0035—Pressure sprayers mounted on a frame and guided by hand; Spray barrow
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
Abstract
A sprayi ng carr i age f or sprayi ng p l ant l eaves of a row of p l ants dur i ng movement a l ong the row of p l ants compr i ses a f rame , a whee l f or movi ng the sprayi ng carr i age and a nozz l e support i nc l udi ng sprayi ng nozz l es . The whee l i s mounted to the f rame and rotatabl e wi th respect to the f rame about a whee l ax i s . The nozz l e support i s mounted to the f rame and movabl e wi th respect to the f rame i n upward and downward d i rect i on between a l ow pos i t i on and a h i gh pos i t i on through an oscillat i ng mechani s m. The carr i age i s provi ded wi th an arrest i ng e l ement f or bear i ng the nozz l e support i n i ts l ow pos i t i on . The oscillat i ng mechani sm compr i ses a cam at a s i de of sai d whee l at a d i stance f rom the whee l ax i s and a cam f o llower wh i ch i s movabl e wi th respect to the f rame and wh i ch cooperates wi th the cam and the nozz l e support . The cam and the cam f o llower are adapted such that dur i ng movi ng the sprayi ng carr i age i n one d i rect i on the cam engages the cam f o llower when the nozz l e support i s i n i ts l ow pos i t i on and subsequent l y f orces the nozz l e support i n upward d i rect i on through the cam f o llower until the cam f o llower l oses contact wi th the cam caus i ng the nozz l e support to move to i ts l ow pos i t i on under gravi tat i onal f orce .
Description
Octrooicentrum
Θ 2018401
(21) Aanvraagnummer: 2018401 © Aanvraag ingediend: 21 februari 2017 (g) Int. CL:
A01M 7/00 (2017.01)
(4^ Aanvraag ingeschreven: | (73) Octrooihouder(s): |
17 september 2018 | Micothon B.V. te Mijdrecht. |
(43) Aanvraag gepubliceerd: | |
- | (72) Uitvinder(s): |
Theodorus Wilhelmus Maria Straathof | |
Octrooi verleend: | te Mijdrecht. |
17 september 2018 | Thijs van den Berg te Delfgauw. |
(45) Octrooischrift uitgegeven: | |
15 november 2018 | (74) Gemachtigde: |
ir. A.R. Aalbers te Amsterdam. |
(54) A spraying carriage for spraying plant leaves
57) A spraying carriage for spraying plant leaves of a row of plants during movement along the row of plants comprises a frame, a wheel for moving the spraying carriage and a nozzle support including spraying nozzles. The wheel is mounted to the frame and rotatable with respect to the frame about awheel axis. The nozzle support is mounted to the frame and movable with respect to the frame in upward and downward direction between a low position and a high position through an oscillating mechanism. The carriage is provided with an arresting element for bearing the nozzle support in its low position. The oscillating mechanism comprises a cam at a side of said wheel at a distance from the wheel axis and a cam follower which is movable with respect to the frame and which cooperates with the cam and the nozzle support. The cam and the cam follower are adapted such that during moving the spraying carriage in one direction the cam engages the cam follower when the nozzle support is in its low position and subsequently forces the nozzle support in upward direction through the cam follower until the cam follower loses contact with the cam causing the nozzle support to move to its low position under gravitational force.
NL Bl 2018401
Dit octrooi is verleend ongeacht het bijgevoegde resultaat van het onderzoek naar de stand van de techniek en schriftelijke opinie. Het octrooischrift komt overeen met de oorspronkelijk ingediende stukken.
NL 25317-vH
A spraying carriage for spraying plant leaves
The present invention relates to a spraying carriage for spraying plant leaves of a row of plants during movement along the row of plants, comprising a frame, a wheel for moving the spraying carriage and a nozzle support including spraying nozzles, wherein the wheel is mounted to the frame and rotatable with respect to the frame about a wheel axis, and wherein the nozzle support is mounted to the frame and movable with respect to the frame in upward and downward direction between a low position and a high position through an oscillating mechanism, wherein the carriage is provided with an arresting element for bearing the nozzle support in its low position.
Such a spraying carriage is known from NL 2010142.
The known spraying carriage comprises a frame, wheels and a nozzle support. The nozzle support comprises spraying nozzles at different heights on the nozzle support. The carriage is provided with a nozzle drive to move the nozzle support in vertical direction via an oscillating mechanism. When moving the spraying carriage along a row of plants the nozzle support automatically moves upwardly at relatively low speed and downwardly at relatively high speed. Although the known spraying carriage functions well, it is relatively complex and expensive in particular for using in developing countries.
An object of the invention is to provide a simple and low-cost spraying carriage.
This object is accomplished with the spraying carriage according to the invention which is characterized in that the oscillating mechanism comprises a cam at a side of the wheel at a distance from the wheel axis and a cam follower which is movable with respect to the frame and which cooperates with the cam and the nozzle support, wherein the cam and the cam follower are adapted such that during moving the spraying carriage in one direction the cam engages the cam follower when the nozzle support is in its low position and subsequently forces the nozzle support in upward direction through the cam follower until the cam follower loses contact with the cam causing the nozzle support to move to its low position under gravitational force.
An advantage of the present invention is its simple oscillating mechanism. During movement of the spraying carriage in one direction on a floor the wheel rotates and causes the cam to rotate about the wheel axis. When the cam engages the cam follower when the nozzle support is in its low position the cam will lift the nozzle support via the cam follower to its high position where the cam and cam follower disengage. The shape and dimensions of the cam and cam follower and the path that the cam follower follows during moving with respect to the frame defines a contact path between the cam and the cam follower. For example, a shorter contact path may cause a shorter lifting height of the nozzle support.
In a preferred embodiment the cam is a first cam and the oscillating mechanism comprises at least a second cam at the side of said wheel at angular distance from the first cam, wherein the arresting element is located at the frame and the angular distance between the first cam and the second cam is selected such that at a predetermined speed of the spraying carriage the arresting element bears the nozzle support before the second cam bears the cam follower. This prevents the second cam from being impacted by the cam follower due to the falling nozzle support before it is caught by the arresting element. The predetermined speed may be maximum walking speed, for example 10 km/h in case the spraying carriage is moved by a person. If the spraying carriage is operated at a higher speed, the second cam might already engage the cam follower before the nozzle support has achieved its low position due to a combination of inertia of the nozzle support and rotational speed of the cams. It is noted that the distance between the wheel axis and the first cam may be equal to the distance between the wheel axis and the second cam.
The side of the wheel may be provided with a plurality of cams at a distance from the wheel axis and at equiangular distances from each other.
In a practical embodiment the nozzle support is mounted to the frame via a four-bar linkage including a first upwardly directed bar which is fixed to the frame or forms a part of the frame, a second upwardly directed bar which is fixed to the nozzle support or forms a part of the nozzle support, and an upper horizontally oriented bar and a lower horizontally oriented bar. This provides a stable guide system for guiding the nozzle support with respect to the frame.
The four-bar linkage may be a parallelogram linkage such that the second bar including the nozzle support is movable parallel to the first bar.
The cam follower may be located at the lower bar. This means that the cam follower cooperates with the nozzle support through the lower bar of the four-bar linkage, which provides a simple and compact transmission between the cam and the nozzle support.
The arresting element may be located at the first bar and adapted such that it contacts the upper bar when the nozzle support is in its low position. This means that the arresting element bears the nozzle support indirectly through the upper bar of the four-bar linkage. The arresting element may further comprise a spring and/or damper in order to catch the upper bar in a smooth way when the nozzle support approaches its low position.
The cam, or each of the cams, may comprise a cylindrical pin projecting from the side of the wheel.
Preferably, at least an additional wheel is rotatably mounted to the frame such that the frame is supported and movable by at least two wheels.
The invention will hereafter be elucidated with reference to very schematic drawings showing an embodiment of the invention by way of example.
Fig. 1 is a perspective view of an embodiment of a spraying carriage according to the invention, illustrating a situation in which the nozzle support is in a low position.
Fig. 2 is a similar view as Fig. 1, but showing the spraying carriage from an opposite side.
Fig. 3 is a similar view as Fig. 1, but illustrating a situation in which the nozzle support is in a high position.
Fig. 4 is a side view of the embodiment as shown in Fig. 1, illustrating a situation in which the nozzle support is in a low position.
Fig. 5 is a similar view as Fig. 4, but illustrating a situation in which the nozzle support is in a high position.
Figs. 1-5 show an embodiment of a spraying carriage 1 according to the invention, as seen from different sides and in different situations. The spraying carriage 1 comprises a nozzle support 2 including spraying nozzles 3. The spraying carriage 1 is suitable for spraying plant leaves of a row of plants, by moving the spraying carriage 1 along a row of plants and simultaneously spraying the plants. During moving the spraying carriage 1 on a floor F the nozzle support 2 is oscillated in vertical direction between a low position and a high position. It is moved slower in upward direction than in downward direction such that particularly undersides of plant leaves are sprayed with a spraying liquid, whereas upper sides of the plant leaves are more or less automatically sprayed due to falling droplets of the spraying liquid. More details regarding spraying plants and means for creating a spray are described in NL 2010142.
The embodiment as shown in Figs. 1-5 comprises a frame 4 to which a rear wheel 5 and two front wheels 6 are mounted. The rear wheel 5 is rotatable with respect to the frame 4 about a rear wheel axis 7. The front wheels 6 are mounted to the frame at a mutual axial distance and they are rotatable with respect to the frame 4 about a common front wheel axis 8.
The frame 4 is provided with a pull rod 9 including a handle 10 which allows a person to pull the spraying carriage 1 along a row of plants. Alternatively the spraying carriage 1 can be moved automatically for example by guiding it along a rail.
The diameter of the rear wheel 5 is larger than each of the diameters of the front wheels 6. The rear wheel 5 has more than one function: it does not only support the frame 4 for easily moving the spraying carriage 1, but it also generates oscillation of the nozzle support 2 in vertical direction when moving the spraying carriage 1 on the floor F in a direction which is directed from the rear wheel axis 7 to the front wheel axis 8.
The nozzle support 2 is mounted to the frame 4 via a four-bar linkage 11 extending in a vertical plane. The fourbar linkage 11 has an upper bar 12, and a lower bar 13, which are both horizontally oriented. The lower bar 13 is a buckled bar and partly comprises parallel rods between which space is provided for accommodating the rear wheel 5. Furthermore, the four-bar linkage 11 has a first upwardly directed bar 14 which forms a portion of the frame 4 and a second upwardly directed bar 15 which is integral with the nozzle support 2. In the embodiment as shown in the Figs. 1-5 the four-bar linkage 11 is a parallelogram linkage, which means that the second bar 15 is movable parallel to the first bar 14, in this case vertically .
In order to move the nozzle support 2 between its low position and its high position the spraying carriage 1 is provided with an oscillating mechanism. In the embodiment as shown in Figs. 1-5 the oscillating mechanism comprises five cams 16 at either side of the rear wheel 5. Each of the cams is a cylindrical pin which projects from the side of the rear wheel 5 and is located at a distance from the rear wheel axis 7. The cams 16 are located at equiangular distances from each other, in case of five cams 16 the angular distance is 72°. The cams 16 at either side of the rear wheel 5 are aligned.
The oscillating mechanism also comprises a cam follower 17 for driving the nozzle support 2 in upward direction. The cam follower 17 alternatingly cooperates with each of the cams 16 and is located at the lower bar 13 of the four-bar linkage 11. When pulling the spraying carriage 1 on the floor F one of the cams 16 that engages the cam follower will push the cam follower 17, and thus the nozzle support via the four-bar linkage 11, in upward direction. Due to the location of the cam follower 17 on the lower bar 13 it follows a partly circular cam follower path in vertical direction with respect to the frame 4. The cams 16 follow a circular cam path about the rear wheel axis 7. The cam path intersects the cam follower path. The shape and dimensions of the cams 16 and the cam follower 17 and the cam path and cam follower path define a contact path between each of the cams 16 and the cam follower 17 during rotation of the rear wheel 5. The cams 16 and the cam follower 17 are adapted such that during moving the spraying carriage 1 the respective passing cams 16 engage the cam follower 17 when the nozzle support 2 is in its low position and subsequently forces the nozzle support 2 in upward direction through the cam follower 17 until the cam follower 17 loses contact with the cam 16. After losing contact between the cam 16 and the cam follower 17 the nozzle support 2 will move downwardly to its low position under gravitational force. In the embodiment as shown the cam follower 17 is formed by two plates which can be engaged by respective cams 16 at opposite sides of the rear wheel 5.
In order to catch the nozzle support 2 in its low position the frame 4 is provided with an arresting element 18. In this case the arresting element 18 is fixed to the first bar 14 of the frame 4 and contacts the upper bar 12 when the nozzle support 2 is in its low position. The arresting element 18 is provided with a damper (not shown) in order to catch the upper bar 12 in a smooth way when the nozzle support 2 approaches its low position.
Figs. 1, 2 and 4 show the spraying carriage 1 in a situation in which the nozzle support 2 is in its low position and Figs. 3 and 5 show the spraying carriage 1 in a situation in which the nozzle support 2 is in its high position. The number of cams 16 and the weight of the nozzle support 2 and the four-bar linkage 11 are such that at walking speed, e.g. between 5 and 10 km/h, the arresting element 18 engages the upper bar 12 before a next cam 16 engages the cam follower 17.
The invention is not limited to the embodiment shown in the drawings and described hereinbefore, which may be varied in different manners within the scope of the claims and their technical equivalents.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2018401A NL2018401B1 (en) | 2017-02-21 | 2017-02-21 | A spraying carriage for spraying plant leaves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2018401A NL2018401B1 (en) | 2017-02-21 | 2017-02-21 | A spraying carriage for spraying plant leaves |
Publications (1)
Publication Number | Publication Date |
---|---|
NL2018401B1 true NL2018401B1 (en) | 2018-09-17 |
Family
ID=58995182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL2018401A NL2018401B1 (en) | 2017-02-21 | 2017-02-21 | A spraying carriage for spraying plant leaves |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL2018401B1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB132184A (en) * | ||||
US444786A (en) * | 1891-01-13 | Wheeled insect-destroyer | ||
US2713816A (en) * | 1954-06-29 | 1955-07-26 | Robert B Berg | Cultivators for row plants |
US4936096A (en) * | 1986-12-08 | 1990-06-26 | Vanderjagt John A | Drive mechanism |
WO1996008317A1 (en) * | 1994-09-16 | 1996-03-21 | Victor Vivian Miers | Wheeled spraying unit with variable rates of pressurisation |
-
2017
- 2017-02-21 NL NL2018401A patent/NL2018401B1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB132184A (en) * | ||||
US444786A (en) * | 1891-01-13 | Wheeled insect-destroyer | ||
US2713816A (en) * | 1954-06-29 | 1955-07-26 | Robert B Berg | Cultivators for row plants |
US4936096A (en) * | 1986-12-08 | 1990-06-26 | Vanderjagt John A | Drive mechanism |
WO1996008317A1 (en) * | 1994-09-16 | 1996-03-21 | Victor Vivian Miers | Wheeled spraying unit with variable rates of pressurisation |
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Legal Events
Date | Code | Title | Description |
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MM | Lapsed because of non-payment of the annual fee |
Effective date: 20210301 |