• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    AbstractThere is provided a reed cutting arrangement (100, 200, 300) comprising: a first tubu|ar member (202, 302) comprising a plurality of nozzles(204) arranged and configured to eject water under high pressure in a forwarddirection of the arrangement for cutting reed located in front of the nozzles, asecond tubu|ar member (207, 306) comprising a plurality of nozzles (208)configured to eject water under high pressure in a backwards direction of thearrangement for propulsion of the arrangement in the forward direction; andwherein the second tubu|ar member comprises an in|et (210) configured toreceive water under high pressure, the second tubu|ar member beingarranged in fluid connection with the first tubu|ar member to provide waterunder high pressure to the first tubu|ar member. For publication: Fig. 2
    公开号:SE1450440A1
    申请号:SE1450440
    申请日:2014-04-09
    公开日:2015-10-10
    发明作者:Yngve Säwström
    申请人:Ekoion Ab；
    IPC主号:
    专利说明:

    REED CUTTING ARRANGEMENT Field of the lnvention The present invention relates to a reed cutting arrangement.
    Technical BackgroundReed cutting is often required to maintain wetlands and reed may also used as fuel or as construction material. However, presently availableequipment for reed cutting often involves heavy agricultural machinery whichdamages the ground and seabed when the reed is harvested. Suchmachinery may for example use track propulsion systems which may do greatdamage to a soft surface.
    An example of an aquatic plant cutting apparatus is shown inUS5142849 where different examples of plant cutting arrangements involvingrotating knives are shown. The plant cutting apparatus may also be arrangedon a boat.
    However, due to the presently available technology, large scaleharvesting of reed for use as energy source or as construction material using conventional reed cutting equipment is not economically viable.
    Summary of the lnvention ln view of the above-mentioned drawbacks of prior art reed cutters, it isan object of the present invention to provide an improved reed cuttingarrangement which is both more economical and which may be used withoutcausing damage to the ground or seabed where reed grows.
    According to a first aspect of the present invention, it is thereforeprovided a reed cutting arrangement comprising: a first tubular membercomprising a plurality of nozzles arranged and configured to eject water underhigh pressure in a forward direction of the arrangement for cutting reedlocated in front of the nozzles, a second tubular member comprising aplurality of nozzles configured to eject water under high pressure in a backwards direction of the arrangement for propulsion of the arrangement in 2 the forward direction; and wherein the second tubular member comprises aninlet configured to receive water under high pressure, and an outlet arrangedin fluid connection with the first tubular member to provide water under highpressure to the first tubular member.
    The present invention is based on the realization that a simple reedcutting arrangement for large scale harvesting of reed may be provided in theform of connected tubular members, using water under high pressure both forcutting the reed and for propulsion of the reed cutting arrangement. Thetubular member may for example be conventional water tubes configured towithstand the high pressure required for cutting the reed. Through variousembodiments of the present invention, reed, grass, or the like may be cut inan efficient manner while at the same time minimizing the environmentalimpact.
    According to one embodiment of the invention, the first tubular membermay advantageously be curved or U-shaped. Thereby, the first tubularmember, which comprises the forward pointing nozzles for cutting reed, maymore easily progress as reeds and the like are less likely to get stuck in thearrangement.
    Furthermore, the first tubular member may also be wedge shaped or V-shaped, such that reed which has been cut is pushed aside to allow the reedcutting arrangement to more easily propagate in a forward direction. ln one embodiment of the invention, the second tubular member maybe connected to a middle portion of the first tubular member. Thereby, thereed cutting arrangement may have the form of an arrow, or umbrella-like,where a second tubular member is providing water under high pressure to amiddle portion of the first tubular member. ln one embodiment of the invention, the second tubular member mayadvantageously be connected to a first end of the first tubular member, furthercomprising a third tubular member connected to a second end of and in fluidconnection with the first tubular member. The reed cutting arrangement maythus also be provided with two separate tubular members being connected tothe first tubular member for cutting reed. Different configuration the reed 3 cutting arrangement may be required depending on circumstances such asthe type and density of reed to be cut.
    According to one embodiment of the invention, the nozzles arrangedon said first tubular member may advantageously be water-jet nozzles.Known water-jet nozzles used for cutting for example cardboard and the likemay advantageously be used in the present application. ln one embodiment of the invention, the nozzles arranged on the firsttubular member may be configured to eject water within an angle of 70°. Theejection angle will in part determine the pressure of water being ejected fromthe nozzle, and also the required distance between nozzles for achieving fullcoverage of a cutting spray of water in the forward direction.
    According to one embodiment of the invention, at least one of theaforementioned tubular members may comprise flotation means. Manydifferent combinations of flotation means can be imagined. For example, thefirst tubular member may comprise flotation means such that the reed is cut atthe water surface while the remaining tubular member/members may beabove or below the surface.
    Depending on where the reed cutting arrangement is to be used,different types and configurations of flotation means are required. The reedcutting arrangement may accordingly be configured for cutting reed in variousenvironments such as a bog, swamp, marsh, lake or the like. When used inmarshes or other types of wetlands where reed grows from a solid orsemisolid base (as opposed to on the bottom of a lake or river), the reedcutting arrangement may propagate on such a base. Furthermore, when usedin a lake or river, flotation means may be arranged such that reed is cut at acertain depth below the surface.
    The flotation means may for example be air filled pockets or buoyswhich may or may not be individually controllable to have variable buoyancy.The flotation means may be fixed or releasably attached to the tubularmembers, and they may be solid or hollow. Moreover, a floatation capabilityof the arrangement may for example be provided if the tubular members aremade from a material which has certain buoyancy. 4 ln one embodiment of the invention, the reed cutting arrangement mayfurther comprise a high pressure pump system connected to the inlet andconfigured to provide water under high pressure to the second tubularmember.
    According to one embodiment of the invention, the pressure providedby the system may advantageousiy be between 1000 and 2000 Bar.
    High pressure should in the present context be understood as anelevated pressure. Even though the pressure from the high pressure systempreferably is in the range of 1000 to 2000 Bar, pressures outside of this rangemay also be used to the same effect. Moreover, the output pressure from aparticular nozzle depends on a range of parameters such as the number ofnozzles and the size of the nozzle opening. Furthermore, the output pressurefrom the cutting nozzle can be selected to suit a particular type of reed to becut. The skilled person readily realizes that there are number of ways that theoutput pressure from the nozzles can be controlled.
    Further features of, and advantages with, the present invention willbecome apparent when studying the appended claims and the followingdescription. The skilled person realize that different features of the presentinvention may be combined to create embodiments other than thosedescribed in the following, without departing from the scope of the present invenfion.
    Brief Description of the Drawinqs These and other aspects of the present invention will now be describedin more detail with reference to the appended drawings showing an exampleembodiment of the invention, wherein: Fig. 1 schematically illustrates an overview of the use of a reed cuttingarrangement according to an embodiment of the invention; Fig. 2 schematically illustrates a reed cutting arrangement according toan embodiment of the invention; and Fig. 3 schematically illustrates a reed cutting arrangement according to another embodiment of the invention.
    Detailed Description of Preferred Embodiments of the lnvention ln the present detailed description, various embodiments of a reedcutting arrangement according to the present invention will be discussed.
    Fig. 1 is a schematic illustration of how a reed cutting arrangement 100according to an embodiment of the invention may be used in a wetland suchas a swamp, marsh, bog or fen. The reed cutting arrangement 100 is hereillustrated as being connected to a high pressure pump 102 in a boat 106,which is being controlled by an operator 104. However, the high pressurepump 102 may equally well be arranged on solid ground.
    Fig. 2 is a schematic illustration of an embodiment of a reed cuttingarrangement comprising a curved first tubular member 202 comprising aplurality of nozzles 204 arranged and configured to eject water under highpressure in a forward direction, illustrated by arrows 205. Thereby, reedlocated in front of the nozzles 204 can be cut by the high pressure water-jetfrom the nozzles 204. A second and third tubular member 206, 207 isconnected to respective ends of the first tubular member 202. The secondand third tubular members 206, 207 comprise a plurality of nozzles 208configured to eject water under high pressure in a backwards direction of thearrangement 200 for propulsion of the arrangement in the forward direction.The second tubular member comprises an inlet 210 configured to receivewater under high pressure, the second tubular member 207 is in turnarranged in fluid connection with the first tubular member 202 to providewater under high pressure to the first tubular member 202. Herein, waterunder high pressure is provided by a high pressure system 214 connected tothe second tubular member 207 via a connecting tube. The person skilled inthe art readily realizes that the tubular member and the connecting tube maybe arranged in many different ways while still achieving the objects andadvantages of embodiments of the invention. For example, the connectingtube 212 may in principle be connected anywhere on the arrangement, atonly one location of the arrangement 200 or at many different locationsseparately and simultaneously. The resulting water pressure in different parts 6 of the arrangement may for example be controlled by controlling theconnections of the tube 212. Furthermore, different diameters of differenttubular portions may also be used to control the pressure in different parts ofthe arrangement 200.
    Moreover, the connecting tube may for example have a length in therange of, but not limited to, 50 - 100m so that large areas may be cut orharvested without the need for moving the high pressure system 214. Thereed cutting arrangement may thus travel a corresponding distance whilecutting and then be hauled back in to then cut a new adjacent path. The firsttubular member 202 may for reach over a width of between 5 and 10 m wide,depending on what is practical for the particular task at hand. Each of thetubular members may also be modular so that the length and width of thearrangement can be determined and varied on-site.
    Fig. 3 schematically illustrates a reed cutting arrangement 300according to an embodiment of the invention comprising a v-shaped firsttubular member 302 and a second tubular member 306 connected at themiddle of the v-shaped first tubular member 302. The shape of the tubularmembers may be achieved by providing a rigid or semi-rigid tubular member,or by providing a support structure for the tubular member.
    As an example, nozzles 204 for cutting reed may be configured to ejectwater at an angle of 70° in the horizontal plane, and the nozzles 204 may bearranged at a distance between each other of about 5-10 cm. A distancebetween nozzles 208 for propulsion of the arrangement may for example be50 cm.
    Moreover, both the nozzles for cutting and the nozzles for propulsionmay be adjustable to control the pressure from each nozzle, such that thereed cutting arrangement may be used under different circumstances.
    Even though the invention has been described with reference tospecific exemplifying embodiments thereof, many different alterations,modifications and the like will become apparent for those skilled in the art. Forexample, many different configurations of the tubular members and nozzlesare possible, while still being within the scope of the invention relating to a 7 water powered reed cutting arrangement. Also, it should be noted that partsof the system may be omitted, interchanged or arranged in various ways, thereed cutting arrangement yet being able to perform the functionality of thepresent invention.
    Additionally, variations to the disclosed embodiments can beunderstood and effected by the skilled person in practicing the claimedinvention, from a study of the drawings, the disclosure, and the appendedclaims. ln the claims, the word "comprising" does not exclude other elementsor steps, and the indefinite article "a" or "an" does not exclude a plurality. Themere fact that certain measures are recited in mutually different dependentclaims does not indicate that a combination of these measured cannot be used to advantage.
    权利要求:
    Claims (10)
    [1] 1. A reed cutting arrangement (100, 200, 300) comprising: a first tubular member (202, 302) comprising a plurality of nozzles(204) arranged and configured to eject water under high pressure in a forwarddirection of said arrangement for cutting reed located in front of said nozzles, a second tubular member (207, 306) comprising a plurality of nozzles(208) configured to eject water under high pressure in a backwards directionof said arrangement for propulsion of said arrangement in said forwarddirection; and wherein said second tubular member comprises an in|et (210)configured to receive water under high pressure, said second tubular memberbeing arranged in fluid connection with said first tubular member to providewater under high pressure to said first tubular member.
    [2] 2. The reed cutting arrangement according to c|aim 1, wherein said first tubular member (202) is curved or U-shaped.
    [3] 3. The reed cutting arrangement according to c|aim 1, wherein saidfirst tubular member (302) is wedge shaped or V-shaped.
    [4] 4. The reed cutting arrangement according to c|aim 2 or 3, whereinsaid second tubular member is connected to a middle portion of said first tubular member,
    [5] 5. The reed cutting arrangement according to c|aim 2 or 3, whereinsaid second tubular member (207) is connected to a first end of said firsttubular member, further comprising a third tubular member (206) connectedto a second end of and in fluid connection with said first tubular member. 9
    [6] 6. The reed cutting arrangement according to any one of thepreceding claims wherein said nozzles arranged on said first tubuiar member are water-jet nozzles.
    [7] 7. The reed cutting arrangement according to any one of thepreceding claims wherein said nozzles arranged on said first tubuiar memberare configured to eject water within an angle of 70°.
    [8] 8. The reed cutting arrangement according to any one of thepreceding claims, wherein at least one of said tubuiar members further comprises fiotation means.
    [9] 9. The reed cutting arrangement according to any one of thepreceding claims, further comprising a high pressure pump system (102, 214)connected to said in|et and configured to provide water under high pressure to said second tubuiar member.
    [10] 10. The reed cutting arrangement according to c|aim 9, wherein apressure provided by said system is between 1000 and 2000 Bar.
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    同族专利:
    公开号 | 公开日
    SE538483C2|2016-07-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB2557165A|2016-09-14|2018-06-20|Emms Derrick|Reed bed maintenance method|
    CN110637598B|2019-10-22|2020-10-09|三峡大学|Current equalizer suitable for water shield picking and use method|
    法律状态:
    2019-12-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1450440A|SE538483C2|2014-04-09|2014-04-09|Reed trimmer|SE1450440A| SE538483C2|2014-04-09|2014-04-09|Reed trimmer|
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