NL2031920B1 - Mowing device for mowing banks of watercourses and method therefor - Google Patents

Mowing device for mowing banks of watercourses and method therefor Download PDF

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Publication number
NL2031920B1
NL2031920B1 NL2031920A NL2031920A NL2031920B1 NL 2031920 B1 NL2031920 B1 NL 2031920B1 NL 2031920 A NL2031920 A NL 2031920A NL 2031920 A NL2031920 A NL 2031920A NL 2031920 B1 NL2031920 B1 NL 2031920B1
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NL
Netherlands
Prior art keywords
mowing
wall
fish
mowing device
opening
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NL2031920A
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Dutch (nl)
Inventor
Regnerus Piet
Regnerus Wilko
Original Assignee
Rema Holding Bv
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Priority to NL2031920A priority Critical patent/NL2031920B1/en
Application granted granted Critical
Publication of NL2031920B1 publication Critical patent/NL2031920B1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/835—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
    • A01D34/86—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for use on sloping ground, e.g. on embankments or in ditches
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D44/00—Harvesting of underwater plants, e.g. harvesting of seaweed
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D75/00—Accessories for harvesters or mowers
    • A01D75/20—Devices for protecting men or animals

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Harvester Elements (AREA)

Abstract

The present invention relates to a mowing device for mowing banks of watercourses, wherein the mowing device comprises: 5 - a container that is provided with a receiving opening for receiving cut vegetation, wherein the container comprises a wall having a width in a width direction; - a mowing element for cutting vegetation that is provided adjacent to the receiving opening, wherein the container comprises at least one fish opening that is provided in the wall remote 10 from the receiving opening, wherein the fish opening is configured to allow fish to passage through the wall when fish is positioned in the container.

Description

MOWING DEVICE FOR MOWING BANKS OF WATERCOURSES AND METHOD
THEREFOR
The present invention relates to a mowing device for mowing banks of watercourses. The present invention further relates to a method for mowing a bank of watercourses.
Known are mowing devices for mowing banks of watercourses that are provided with a container and a mowing element arranged on the container. The mowing element is configured to cut vegetation that is growing on the bank of watercourses, after which the cut vegetation is collected into the container. The known mowing devices can be attached to a crane, tractor or boat which are provided with an arm that is connected to the mowing device and is configured to move the mowing device over the bank of the watercourse.
When a crane is positioned next to the watercourse, the mowing device moves into a direction that is perpendicular to the throughflow direction of the watercourse. A downside of the known mowing devices is that during mowing not only cut vegetation is collected into the container, but also fish that is swimming in the watercourse. After mowing the cut vegetation, together with the collected fish, is deposited on the land next to the watercourse. In general, the fish do not survive being on land for long.
It is an object for the present invention to obviate or at least reduce the abovementioned problems. In particular, it is an object of the present invention to increase the chance of preserving wildlife during the mowing of banks of watercourses.
This object is achieved by a mowing device for mowing banks of watercourses, wherein the mowing device comprises: - a container that is provided with a receiving opening for receiving cut vegetation, wherein the container comprises a wall having a width in a width direction; - a mowing element for cutting vegetation that is provided adjacent to the receiving opening, wherein the container comprises at least one fish opening that is provided in the wall remote from the receiving opening, wherein the fish opening is configured to allow fish to passage through the wall when fish is positioned in the container.
An advantage of the fish opening is that fish 1s allowed to pass through the wall of the container when fish is positioned in the container. In this way, the fish are able to exit the container during mowing with the mowing device. As a result, the fish are not deposited on the land next to the watercourse when the mowing device is retracted from the water and/or emptied on the banks adjacent the watercourse. This reduces the number of fish that is killed during mowing of the banks of watercourses.
Another advantage of the fish opening is that a more open construction of the container is obtained. This reduces the amount of turbulence in water, and, as a consequence, the amount of muddy water that is created by movement of the mowing device over the bottom surface of the watercourse. As the amount of oxygen in the water is hereby decreased less, this further increases the chance of survival for the fish during mowing. In the context of the present invention the container can also be denoted as reservoir or bucket. The container is an element that is configured to receive cut vegetation.
The mowing element is provided adjacent to the receiving opening such that cut vegetation is easily collected into the container. The mowing element comprises at least one cutting edge that is configured to be directed in the mowing direction. The mowing direction is defined as the direction in which the mowing device moves during mowing. The mowing direction is generally perpendicular to the width direction of the mowing device.
The fish opening preferably is located opposite of the receiving opening. In an embodiment, the minimum distance between the fish opening and the receiving opening is 2 centimetres, preferably 5 centimetres, and most preferably 10 centimetres. During use, when the mowing device is moving in the mowing direction, the receiving opening is in front such that the cut vegetation is collected through the receiving opening in the container. By movement of the mowing device in the mowing direction the cut vegetation, and thereby also the fish that are collected, are guided towards the back of the container of the mowing device, wherein preferably the wall of the container is positioned. By providing the fish opening opposite of the receiving opening, at the back of the mowing device, the fishes are automatically guided towards the fish opening when the mowing device is mowing. This increases the chances of fish being able to escape the container.
In the context of the present invention watercourses comprise for example channels, rivers, ditches or tranches. Banks are defined as the surfaces which support the water in the watercourse.
In general, the banks may comprise a horizontal surface positioned at the lowest point of the watercourse and two tilted surfaces at opposite sides of the horizontal surface that may be partially free of water.
In an embodiment the fish opening is provided in a side wall of the container. The side wall of the container stretches out in a plane that is perpendicular to the width direction of the container.
The width of the container extends in a width direction, wherein the width direction is perpendicular to mowing direction. The mowing direction is the direction in which the mowing device moves during mowing. Preferably, the mowing element therefore also extends in the width direction, such that the mowing blade of the mowing element is positioned perpendicular to the mowing direction in order to obtain a sufficiently large mowing area.
In an embodiment according to the invention the at least one fish opening extends substantially in the width direction of the wall of the container and a ratio of a width to a height of the fish opening is at least 3.
In general, fish are swimming in the throughflow direction of the watercourse. Normally, the mowing device is moved in the moving direction that is perpendicular to the throughflow direction of the watercourse. Therefore, fish are generally swimming in the width direction of the mowing device. An advantage of the fish opening extending in the width direction is that the fish openings are conform, that is in line with, the direction into which the fish are swimming, thereby increasing the chance of the fish exiting the container through the fish opening. By having the ratio of the width to the height of the fish opening of at least 3, an optimal result for both allowing the fish to exit through the fish opening and the cut vegetation to stay in the container is obtained. In the context of the present invention, the fish opening that extends in a width direction may be denoted as first fish opening.
In an embodiment the width of the fish opening is at least 30 centimetres, preferably at least 40 centimetres. The height of the fish opening is preferably in the range of 5-15 centimetres, preferably in the range of 8-12 centimetres, and most preferably is 10 centimetres.
In an embodiment according to the invention the at least one fish opening comprises a light emitting element provided on an edge of the at least one fish opening.
An advantage of the light emitting element is that the light guides the fishes to the openings. This increases the chance of the fish finding the opening and exiting the container through the fish opening. The edge of the fish opening is defined as the edge of the structure that defines the at least one fish opening.
In an embodiment according to the invention the at least one fish opening comprises an annular opening in the wall of the container.
The annular opening comprises a circular or annular opening in the centre of an annular element. Preferably, the annular element defines the circular or annular opening. The annular element may have an edge defining the circular or annular opening. The annular opening could be positioned anywhere in the wall of the container. For example, in case the wall of the container comprises bars, the annular element or opening could be positioned between the bars. Alternatively or additionally, the annular opening is positioned in a side wall of container. The annular opening is especially advantageous in combination with the light emitting element, as the light emitting element will guide the fish towards the annular opening.
Preferably, the diameter of the circular or annular opening in the centre of the annular element is in the range of 5-20 centimetres, preferably in the range of 10-15 centimetres, and most preferably is 12 centimetres.
In the context of the present invention, the annular opening may be denoted as second fish opening.
In an embodiment according to the invention the wall comprises a first wall provided with the mowing element and second wall, wherein adjacent edges of the first and second wall are at least partially disconnected from each other such that the fish opening is formed in between the adjacent edges of the first and second wall.
The adjacent edges are the edges of the first and second wall that are positioned near each other. The adjacent edges extend in a width direction. The adjacent edges can also be denoted as fish opening edges. Due to the adjacent edges being partially disconnected an effective and robust design of the mowing device with fish openings is obtained.
In an embodiment the first wall extends from a first edge to a second edge, the second edge being the adjacent edge of the first wall. The first edge of the first wall comprises the mowing element. The first wall is at least partly curved over a curvature, wherein the curvature preferably extends from the adjacent edge towards a transition edge. From the transition edge the first wall extends substantially flat towards the first edge. The first wall is preferably curved such that the first wall is concave relative to the receiving opening. The receiving opening is positioned between the first edge of the first wall and the second edge of the second wall. The second wall extends from the second edge towards the adjacent edge of the second wall. The first edge, second edge and adjacent edges preferably extend in the width direction. The mowing device comprises two side walls, preferably plate-shaped, that each extend in a direction perpendicular to the width direction and are positioned at the ends of the first, second and adjacent edges. A periphery of each of the side walls is defined by a straight line from the first edge to the second edge and the side edges that extend from the first edge of the first wall to the adjacent edge of the first wall and from the second edge from the second wall to the adjacent edge of the second wall. The second wall can be substantially straight, or have the same curvature as the first wall, or a combination thereof.
In an embodiment according to the invention the mowing device has a horizontal mowing position wherein the mowing element and an end part of the first wall near the mowing element are substantially parallel to a horizontal, wherein in the horizontal mowing position the adjacent edges of the first and second wall are horizontally offset when seen in the width direction, wherein the adjacent edge of the second wall is positioned further away from the mowing element than the adjacent edge of the first wall.
The horizontal is a horizontal surface, such as the horizontal surface of a watercourse. In the context of the present invention, a horizontal surface is parallel to a reference horizontal, such as the surface of the earth. Due to the horizontal offset of the adjacent edge of the second wall further away from the mowing element, a fish opening can be created in between the adjacent edges of the first and second wall.
In an embodiment according to the invention in the horizontal mowing position the adjacent edges of the first and second wall are substantially at a same vertical height relative to the horizontal.
Due to the opening edges having substantially the same vertical height the cut vegetation is 5 kept in the container during mowing of horizontal surfaces.
In an embodiment according to the invention the mowing device has a tilted mowing position that is defined by the mowing element and an end part of the first wall near mowing element being substantially tilted relative to the horizontal, wherein in the tilted mowing position the fish opening provides a passage that is free when seen in a horizontal direction perpendicular to 19 the width direction.
In the context of the present invention, tilted is to be understood as having an angle of 20- 70 degrees relative to the horizontal, preferably having an angle of 30-60 degrees relative to the horizontal. The horizontal direction is parallel to a reference horizontal, such as the surface of the earth.
An advantage of the passage being free when seen in a horizontal direction perpendicular to the width direction is that during movement of the mowing device in the mowing direction which is parallel to the tilt the fish are guided towards the fish opening that is provided between the adjacent edges.
In an embodiment according to the invention the mowing device further comprises at least one raising element that is provided at an underside of the wall of the container, wherein the underside of the wall projects towards a surface of the bank in use. wherein the raising element is configured to provide a distance between the underside of the wall and the surface of the bank during mowing.
The raising element preferably extends away from the underside of the wall. An advantage of the raising element is that the mowing element is provided at a distance to the surface of the bank during mowing. Therefore, the mowing element will not cut wildlife, such as frogs residing on the bank of the watercourse. This ensures that more wildlife is preserved during mowing.
In an embodiment according to the invention the raising element comprises a structure that extends away from an edge of the receiving opening whereon the mowing element is provided with a curved part and ends in a straight part, wherein the straight part is configured to be parallel to the underside of the wall.
Preferably, the straight part is parallel to an end part of the first wall that is flat. The straight part can effectively contact the surface of the bank, while the curved part ensures that a distance between the end part of the raising element and the underside of the wall is obtained.
In an embodiment according to the invention the container is at least partly a concave element wherein the wall of the container is at least partly curved, and wherein the wall further comprises a straight part extending from the curved part to the edge of the receiving opening whereon the mowing element is provided.
Preferably, the first wall is curved. Due to the concave container the cut vegetation can effectively be collected after cutting.
In an embodiment according to the invention the mowing element comprises two parallel blades that are positioned on top of each other and each having cut-outs, wherein at least one of the blades is reciprocally movable in the width direction.
Due to the reciprocal movement of at least one of the blades the vegetation that is growing on the banks of watercourses can effectively be cut. Preferably the other blade that is not reciprocally moving stands still. The cut-outs may be triangular shaped.
In an embodiment according to the invention the mowing device comprises a drive that is configured to drive the at least one reciprocally movable blade in the width direction, wherein the drive is positioned substantially flush with the wall of the container.
Due to the drive being flush with the wall of the container there is less turbulence in the water. As a consequence, the amount of muddy water that is created by movement of the mowing device over the surface of the watercourse. This further increases the chance of survival for the fish during mowing. Next to this, the drive being flush reduces the chance of fish being hit by moving parts of the drive, thus reducing the chance of harming fish.
In an embodiment according to the invention the mowing element comprises at least one blade, further comprising a protection element that at least partly shields the at least one blade.
Preferably, the blade has a cutting edge. Due to the protection element at least partly shielding the at least one blade the chance of fish being cut by the blade is reduced significantly.
In an embodiment according to the invention the mowing device further comprises an arm coupling that is configured to be connected to an extension arm.
Due to the arm coupling the mowing device can effectively be connected to an extension arm, for example an extension arm of a crane. The extension arm can effectively move the mowing device over the surface of the watercourse, thus achieving an efficient mowing. In an embodiment the arm coupling can also be directly connected to the crane, tractor or boat, thus without making use of an extension arm.
In an embodiment according to the invention the wall of the container comprises bars extending perpendicularly relative to the width direction.
An advantage of the bars is that a substantially open structure is obtained, which reduces turbulence during movement of the mowing device through water.
The invention further relates to a mowing assembly, wherein the mowing assembly comprises: - a mowing device according to any one of the aforementioned embodiments; and
- a vehicle or boat provided with an extension arm that is connected to the mowing device.
The mowing assembly has similar effects and advantages as described for the mowing device.
The invention further relates to a method for mowing a bank of watercourses, the method comprising the steps of: - providing a mowing device according to any one of the aforementioned embodiments or a mowing assembly according to any one of the aforementioned embodiments; and - moving the mowing device over the bank of the watercourse to mow vegetation growing on the bank.
The method has similar effects and advantages as described for the mowing device and the mowing assembly.
Further advantages. features and details are elucidated on the basis of preferred embodiments thereof, wherein reference is made to the accompanying drawings, wherein: - figure 1, a perspective view of a mowing device according to the invention; - figures 2A-B, a front view of a mowing device according to the invention; - figure 3, a side view of a mowing device according to the invention: and - figures 4A-B, examples of a method of using the mowing device.
Mowing device 2 (figure 1) comprises container 4 that is provided with receiving opening 6. Receiving opening 6 is positioned between first edge 8 and second edge 10 of container 4. First edge 8 and second edge 10 stretch out in width direction W of mowing device 2. Attached to first edge 8 is mowing clement 12. Mowing element 12 is provided with protection element 13 which is positioned substantially over mowing element 12 such that mowing element 12 is shielded from direct contact with wildlife such as fish. Container 4 comprises first wall 14 and second wall 16.
First wall 14 and second wall 16 are connected by fish openings 18. Fish openings 18 stretch out in with direction W of mowing device 2. First wall 14 is shaped as a concave element. Both first wall 14 and second wall 16 comprise bars 22 that stretch out in height direction H that is perpendicular to width direction W. Mowing device 2 is further provided with side walls 24 that are positioned at sides 23a and 23b of container 4. Adjacent to second edge 10 connection element 40 is provided.
Through connection element 40 mowing device 2 can for example be connected to the amm of a crane which guides mowing device 2 during mowing.
Further provided in container 4 are annular elements 34. Annular elements 34 comprise annular opening 36 which is surrounded by annular-shaped light emitting element 38. It is clear for the skilled person that light emitting elements 38 are optional and can also be omitted.
Alternatively or additionally, light emitting element 38 can also be provided on fish openings 18.
Light emitting element 38 can for example be an LED which during mowing constantly emits light. Annular elements 34 are in this illustrated embodiment positioned on side walls 234 and 23b.
Further annular elements 70 are provided between bars 22 of first side wall 14. Due to the light emitting element 38 fishes that are positioned in container 4 are directed towards opening 36 through which the fishes can exit container 4.
Positioned in middle of container 4 is drive 26 (figures 2A-B). Drive 26 is substantially flush with first wall 14 of container 4. In this way a substantially open container 4 is achieved which reduces turbulence during mowing in banks of watercourses. Drive 26 is provided with transmission element 28 that is connected with upper mowing blade 30 through transmission bar 27. Transmission element 28 moves into width direction W such that upper moving blade 30 is reciprocally moved over lower mowing blade 32. The ratio of height H; of fish opening 18 to width W‚ of fish opening 20 is 0,2.
First wall 14 (figure 3) comprises flat part 42 end concave part 44. Attached to first edge 8 and positioned on flat part 42 is mowing element 12. Further attached to flat part 42 is raising element 46. Raising element 46 stretches from first end 8 with first part 47 in a curved manner towards end part 48. End part 48 is substantially flat and in this illustrated embodiment substantially parallel with flat part 42 of first wall 14. Upper edge 50 of first wall 14 and lower edge 52 of second wall 16 together form fish opening 18. Seen in horizontal direction A, upper edge 50 off first wall 14 is offset horizontally from lower edge 52 of second wall 16 such that upper edge 50 of first wall 14 is positioned further from first edge 10 of container 4.
Mowing device 2 (figure 4A) is attached with connection 64 to arm 62 of crane 60. Arm 62 is configured to move moving device 2 over the surface of water course 54. Water course 54 comprises slope 564. horizontal surface 58 and slope 56b. Mowing device 2 is in horizontal mowing position 70 in which flat part 42 and end part 48 of raising element 46 are substantially parallel with horizontal surface 58. Mowing device 2 moves in mowing direction M;. During movement of mowing device 2 in mowing direction M; fish is able to exit container 4 by moving through fish opening 18. which is positioned opposite to receiving opening 6.
Mowing device 2 (figure 4B) is in tilted mowing position 72. In tilted mowing position 72 flat part 42 and end part 48 of raising element 46 are substantially parallel to slope 56b.
Consequently. flat part 42 and end part 48 of raising element 46 are tilted relative to horizontal surface 58. In tilted mowing position 72 upper edge 50 of first wall 14 and lower edge 52 off second wall 16 are positioned substantially in line when seen in vertical direction. In this way fish opening 18 is freely passagable in horizontal direction A. By moving mowing device 2 in mowing direction M: fishes are guided towards fish opening 18 through the stream of water 76. It is clear for the skilled person that in both horizontal mowing position 70 and tilted mowing position 72 fish is also able to exit container 4 through fish openings 36 and 70.
The present invention is by no means limited to the above described preferred embodiments thereof.
The rights sought are defined by the following clauses within the scope of which many modifications can be envisaged.
CLAUSES
I. Mowing device for mowing banks of watercourses, comprising: - a container that is provided with a receiving opening for receiving cut vegetation, wherein the container comprises a wall having a width in a width direction: and - a mowing element for cutting vegetation that is provided adjacent to the receiving opening, wherein the container comprises at least one fish opening that is provided in the wall remote from the receiving opening, wherein the fish opening is configured to allow fish to passage through the wall when fish is positioned in the container. 2. Mowing device according to claim 1, wherein the at least one fish opening extends substantially in the width direction of the wall of the container and a ratio of a width to a height of the fish opening is at least 3. 3. Mowing device according claim 1 or 2, wherein the at least one fish opening comprises a light emitting element provided on an edge of the at least one fish opening. 4. Mowing device according to any one of the foregoing claims, wherein the at least one fish opening comprises an annular opening in the wall of the container. 5. Mowing device according to any one of the foregoing claims, wherein the wall comprises a first wall provided with the mowing element and a second wall, wherein adjacent edges of the first and second wall are at least partially disconnected from each other such that the fish opening is formed in between the adjacent edges of the first and second wall. 6. Mowing device according to claim 5, wherein the mowing device has a horizontal mowing position wherein the mowing element and an end part of the first wall near the mowing element are substantially parallel to a horizontal, wherein in the horizontal mowing position the adjacent edges of the first and second wall are horizontally offset when seen in the width direction, wherein the adjacent edge of the second wall is positioned further away from the mowing element than the adjacent edge of the first wall. 7. Mowing device according to claim 6, wherein in the horizontal mowing position the adjacent edges of the first and second wall are substantially at a same vertical height relative to the horizontal.
8. Mowing device according to claim 6 or 7, wherein the mowing device has a tilted mowing position that is defined by the mowing element and an end part of the first wall near the mowing element being substantially tilted relative to the horizontal, wherein in the tilted mowing position the fish opening provides a passage that is free when seen in a horizontal direction perpendicular to the width direction.
9. Mowing device according to any one of the foregoing claims, further comprising at least one raising element that is provided at an underside of the wall of the container that projects towards a surface of the bank in use, wherein the raising element is configured to provide a distance between the underside of the wall and the surface of the bank during mowing.
10. Mowing device according to claim 9, wherein the raising element comprises a structure that extends away from an edge of the receiving opening whereon the mowing element is provided with a curved part and ends in a straight part, wherein the straight part is configured to be parallel to the underside of the wall.
11. Mowing device according to any one of the foregoing claims, wherein the container is at least partly a concave element wherein the wall of the container is at least partly curved.
and wherein the wall further comprises a straight part extending from the curved part to the edge of the receiving opening whereon the mowing element is provided.
12. Mowing device according to any one of the foregoing claims, wherein the mowing element comprises two parallel blades that are positioned on top of each other and each having cut-
outs, wherein at least one of the blades is reciprocally movable in the width direction.
13. Mowing device according to claim 12, wherein the mowing device comprises a drive that is configured to drive the at least one reciprocally movable blade in the width direction, wherein the drive is positioned substantially flush with the wall of the container.
14. Mowing device according to any one of the foregoing claims, wherein the mowing element comprises at least one blade, further comprising a protection element that at least partly shields the at least one blade.
15. Mowing device according to any one of the foregoing claims, wherein the mowing device further comprises an arm coupling that is configured to be connected to an extension arm.
16. Mowing device according to any one of the foregoing claims, wherein the wall of the container comprises bars extending substantially perpendicular relative to the width direction. 17. Mowing assembly, comprising: - a mowing device according to any one of the foregoing claims; and - a vehicle or boat provided with an extension arm that is connected to the mowing device. 18. Method for mowing a bank of watercourses, comprising: - providing a mowing device according to any one of the claims 1-16 or a mowing assembly according to claim 17; and - moving the mowing device over the bank of the watercourse to mow vegetation growing on the bank.

Claims (18)

CONCLUSIESCONCLUSIONS 1. Maaiinrichting voor het maaien van oevers van waterlopen, omvattende: - een houder die is voorzien van een ontvangstopening voor het ontvangen van gesneden vegetatie, waarbij de houder een wand omvat die een breedte heeft in een breedterichting; en - een maai-element voor het snijden van vegetatie die aangrenzend aan de ontvangstopening is voorzien, waarbij de houder ten minste één visopening omvat die op een afstand van de ontvangstopening in de wand is voorzien, waarbij de visopening is ingericht om vis doorgang door de wand te geven wanneer vis is gepositioneerd in de houder.1. Mowing device for mowing the banks of watercourses, comprising: - a holder provided with a receiving opening for receiving cut vegetation, wherein the holder comprises a wall that has a width in a width direction; and - a mowing element for cutting vegetation that is provided adjacent to the receiving opening, wherein the holder comprises at least one fish opening that is provided in the wall at a distance from the receiving opening, wherein the fish opening is designed to allow fish passage through the wall to indicate when fish is positioned in the holder. 2. Maaiinrichting volgens conclusie 1, waarbij de ten minste ene opening zich in hoofdzaak in de breedterichting van de wand van de houder uitstrekt en een verhouding van een breedte tot een hoogte van de visopening ten minste drie is.Mowing device according to claim 1, wherein the at least one opening extends substantially in the width direction of the wall of the holder and a ratio of a width to a height of the fish opening is at least three. 3. Maaiinrichting volgens conclusie 1 of 2, waarbij de ten mmste ene visopening een licht uitzendend element omvat die is voorzien op een rand van de ten minste ene visopening.3. Mowing device according to claim 1 or 2, wherein the at least one fish opening comprises a light-emitting element provided on an edge of the at least one fish opening. 4. Maaiinrichting volgens één van de voorgaande conclusies, waarbij de ten minste ene visopening cen ringvormige opening in de wand van de houder omvat.4. Mowing device according to any one of the preceding claims, wherein the at least one fish opening comprises an annular opening in the wall of the holder. 5. Maaiinrichting volgens één van de voorgaande conclusies, waarbij de wand een eerste wand omvat die is voorzien van het maai-element en een tweede wand, waarbij aangrenzende randen van de eerste en tweede wand ten minste deels losgekoppeld zijn van elkaar zodat de visopening is gevormd tussen de aangrenzende randen van de eerste en tweede wand.5. Mowing device according to any one of the preceding claims, wherein the wall comprises a first wall provided with the mowing element and a second wall, wherein adjacent edges of the first and second walls are at least partially disconnected from each other so that the fish opening is formed between the adjacent edges of the first and second walls. 6. Maaiinrichting volgens conclusie 5. waarbij de maaiinrichting cen horizontale maaipositie heeft waarbij het maai-element en een emddeel van de eerste wand nabij het maai-element in hoofdzaak parallel zijn met een horizontaal, waarbij in de horizontale maaipositie de aangrenzende randen van de eerste en tweede wand gezien in de breedterichting horizontaal verzet zijn, waarbij de aangrenzende rand van de tweede wand verder van het maai-element is gepositioneerd dan de aangrenzende rand van de eerste wand.6. Mowing device according to claim 5, wherein the mowing device has a horizontal mowing position, wherein the mowing element and a part of the first wall near the mowing element are substantially parallel to a horizontal, wherein in the horizontal mowing position the adjacent edges of the first and the second wall, viewed in the width direction, are horizontally offset, wherein the adjacent edge of the second wall is positioned further from the mowing element than the adjacent edge of the first wall. 7. Maaiinrichting volgens conclusie 6, waarbij in de horizontale maaipositie de aangrenzende randen van de eerste en tweede wand in hoofdzaak op eenzelfde verticale hoogte ten opzichte van de horizontaal zijn.7. Mowing device according to claim 6, wherein in the horizontal mowing position the adjacent edges of the first and second walls are substantially at the same vertical height relative to the horizontal. $. Maaiinrichting volgens conclusie 6 of 7, waarbij de maaiinrichting een gekantelde maaipositie heeft die is gedefinieerd door het in hoofdzaak gekanteld zijn van het maai- element en een einddeel van de eerste wand nabij het maai-element ten opzichte van de horizontaal, waarbij in de gekantelde maaipositie de visopening een doorgang voorziet die gezien in een horizontale richting loodrecht op de breedterichting vrij is.$. Mowing device according to claim 6 or 7, wherein the mowing device has a tilted mowing position defined by the mowing element being substantially tilted and an end part of the first wall near the mowing element with respect to the horizontal, wherein in the tilted mowing position the fish opening provides a passage that is clear when viewed in a horizontal direction perpendicular to the width direction. 9. Maaimrichting volgens één van de voorgaande conclusies, verder omvattende ten minste één verhogingselement dat is voorzien aan een onderzijde van de wand van de houder die in gebruik naar een oppervlakte van de oever is gericht, waarbij het verhogingselement is gericht om tijdens het maaien een afstand tussen de onderzijde van de wand en het oppervlak van de oever te realiseren.9. Mowing device as claimed in any of the foregoing claims, further comprising at least one raising element provided on an underside of the wall of the holder which, in use, faces a surface of the bank, wherein the raising element is oriented to provide a distance between the bottom of the wall and the surface of the bank. 10. Maaiinrichting volgens conclusie 9, waarbij het verhogingselement een constructie omvat die zich met een gekromd deel uitstrekt vanaf een rand van de ontvangstopenmg waarop het maai-element is voorzien en eindigt in een recht deel, waarbij het rechte deel is ingericht om parallel aan de onderzijde van de wand te zijn.10. Mowing device according to claim 9, wherein the raising element comprises a construction that extends with a curved part from an edge of the receiving opening on which the mowing element is provided and ends in a straight part, wherein the straight part is designed to run parallel to the to be the bottom of the wall. 11. Maaiinrichting volgens één van de voorgaande conclusies, waarbij de houder ten minste deels een concaaf element is waarbij de wand van de houder ten minste deels gekromd is, en waarbij de wand verder een recht deel omvat dat zich uitstrekt van het gekromde deel naar de rand van de ontvangstopening waarop het maai-clement is voorzien.11. Mowing device according to any one of the preceding claims, wherein the holder is at least partly a concave element, wherein the wall of the holder is at least partly curved, and wherein the wall further comprises a straight part that extends from the curved part to the edge of the receiving opening on which the mowing attachment is provided. 12. Maaiinrichting volgens één van de voorgaande conclusies, waarbij het maai-clement twee parallelle messen omvat die op elkaar zijn gepositioneerd en waarbij elk van de messen uitsparingen heeft, waarbij ten minste één van de messen wederzijds beweegbaar is in de breedterichting.12. Mowing device according to any one of the preceding claims, wherein the mowing element comprises two parallel knives that are positioned on top of each other and wherein each of the knives has recesses, whereby at least one of the knives is mutually movable in the width direction. 13. Maaiinrichting volgens conclusie 12, waarbij de maaiinrichting een aandrijving omvat die 1s ingericht om het ten minste ene wederzijds beweegbare blad aan te drijven in de breedterichting, waarbij de aandrijving in hoofdzaak verzonken is gepositioneerd met de wand van de houder.13. Mowing device according to claim 12, wherein the mowing device comprises a drive that is adapted to drive the at least one mutually movable blade in the width direction, wherein the drive is positioned substantially flush with the wall of the holder. 14. Maaiinrichting volgens één van de voorgaande conclusies, waarbij het maai-element ten minste één mes omvat, verder omvattende een beschermingselement dat ten minste deels het ten minste ene mes afschermt.14. Mowing device according to any one of the preceding claims, wherein the mowing element comprises at least one blade, further comprising a protective element that at least partly shields the at least one blade. 15. Maaiinrichting volgens één van de voorgaande conclusies, waarbij de maaiinrichting verder een armkoppeling omvat die is ingericht om te worden verbonden met een verlengarm.15. Mowing device according to any one of the preceding claims, wherein the mowing device further comprises an arm coupling that is designed to be connected to an extension arm. 16. Maaiinrichting volgens één van de voorgaande conclusies, waarbij de wand van de houder spijlen omvatten die zich in hoofdzaak loodrecht ten opzichte van de breedterichting uitstrekken.16. Mowing device according to any one of the preceding claims, wherein the wall of the holder comprises bars that extend substantially perpendicular to the width direction. 17. Maaisamenstel, omvattende: - een maaiinrichting volgens één van de voorgaande conclusies, en - een voertuig of boot voorzien van een verlengarm die is verbonden met de maaimrichting.17. Mowing assembly, comprising: - a mowing device according to any one of the preceding claims, and - a vehicle or boat provided with an extension arm that is connected to the mowing direction. 18. Werkwijze voor het maaien van oevers van waterlopen, omvattende: - het verschaffen van een maaiinrichting volgens één van de conclusies 1-16 of een maaisamenstel volgens conclusie 17; en - het bewegen van de maaiinrichting over de oever van de waterloop voor het maaien van vegetatie dat op de oever groeit.18. Method for mowing the banks of watercourses, comprising: - providing a mowing device according to any one of claims 1-16 or a mowing assembly according to claim 17; and - moving the mowing device over the bank of the watercourse to mow vegetation growing on the bank.
NL2031920A 2022-05-18 2022-05-18 Mowing device for mowing banks of watercourses and method therefor NL2031920B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1482014B1 (en) * 1963-09-04 1970-08-27 Den Herder Geb Mowing device, in particular for cleaning moats
US3751887A (en) * 1971-05-19 1973-08-14 Herder Nv Devices for mechanically clearing waterways, particularly ditches
DE4428888A1 (en) * 1993-09-24 1995-03-30 Heinrich Bleinroth Appliance for trimming ditch slopes
EP3747253A1 (en) * 2019-06-04 2020-12-09 Gebroeders Tolenaars B.V. Mowing arrangement
DE102020004903A1 (en) * 2020-08-12 2022-02-17 Guido Wesseler Vehicle with suction function

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1482014B1 (en) * 1963-09-04 1970-08-27 Den Herder Geb Mowing device, in particular for cleaning moats
US3751887A (en) * 1971-05-19 1973-08-14 Herder Nv Devices for mechanically clearing waterways, particularly ditches
DE4428888A1 (en) * 1993-09-24 1995-03-30 Heinrich Bleinroth Appliance for trimming ditch slopes
EP3747253A1 (en) * 2019-06-04 2020-12-09 Gebroeders Tolenaars B.V. Mowing arrangement
DE102020004903A1 (en) * 2020-08-12 2022-02-17 Guido Wesseler Vehicle with suction function

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