EP3983608A1 - Maschine und verfahren zum bearbeiten einer tragschicht eines rasenplatzes und rasenplatz - Google Patents
Maschine und verfahren zum bearbeiten einer tragschicht eines rasenplatzes und rasenplatzInfo
- Publication number
- EP3983608A1 EP3983608A1 EP20731854.4A EP20731854A EP3983608A1 EP 3983608 A1 EP3983608 A1 EP 3983608A1 EP 20731854 A EP20731854 A EP 20731854A EP 3983608 A1 EP3983608 A1 EP 3983608A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- biopolymer
- nozzle
- base layer
- lawn
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
- E01C13/083—Construction of grass-grown sports grounds; Drainage, irrigation or heating arrangements therefor
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/096—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating and filling
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/10—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure
Definitions
- the invention relates to a machine and a method for processing a base layer of a lawn, in particular a natural lawn, in particular a sports lawn or a football lawn, as well as for processing lawns or meadow areas that are to be protected against traffic and erosion.
- plastic fibers are mixed homogeneously into the material of the base layer before or during the installation of the lawn or are tufted or stuck into the base layer of the lawn after installation.
- the invention is based on the object of specifying an improved machine and an improved method for processing a base layer of a grass field, in particular a sports grass field or a soccer field.
- a grass field in particular a sports grass field or a soccer field.
- the environmental compatibility of the synthetic fibers should be improved or the mechanical properties of the lawn should be improved or the installation or renewal of the synthetic fibers, in particular in a lawn with existing natural grass, should be facilitated.
- a lawn area is to be understood as meaning, in particular, a natural lawn area, or a base layer, in particular, a lawn base layer.
- a machine for processing a base course of a turf field in particular a sports turf field or a football turf field, is specified, with an extruder with a nozzle which is set up to inject a biopolymer into a base course.
- Another aspect of the invention relates to a method for processing a grass field, in particular a sports grass field or soccer field, with injection of a biopolymer into a base layer of the grass field.
- Another aspect of the invention relates to a grass field, in particular a sports grass field or soccer field, with a base layer and biopolymer fibers which are produced by injecting a biopolymer into the base layer.
- a machine for processing a base course of a lawn in particular for erosion protection of the lawn or for slope reinforcement, as well as for processing lawns or meadow areas that are to be protected against traffic and erosion is specified, with an extruder or an injection molding machine a nozzle, which are set up to inject a biopolymer into a base layer.
- Yet another aspect of the invention relates to a method for processing a lawn area, in particular for erosion protection of the lawn area or for processing lawn areas or meadow areas against traffic and erosion to be protected or for slope reinforcement, with injection of a biopolymer in a base layer of the lawn, the lawn, the meadow area or the slope reinforcement.
- Another aspect of the invention relates to a lawn area, in particular an erosion-proof lawn area or a paved slope lawn area, lawns or meadow areas that are to be protected against traffic and erosion or a slope fastening with a base layer and biopolymer fibers which are produced by injecting a biopolymer into the base layer .
- Typical embodiments are designed to protect a lawn against erosion, in particular for soil reinforcement or soil stabilization.
- An erosion protection of the lawn area, the lawn or meadow area or the slope reinforcement can, for example, at least partially protect the lawn area from erosion from the weather, from adjacent bodies of water or from wear and tear, in particular from being driven on.
- the erosion protection can protect against the formation of ruts when driving on.
- Typical embodiments are designed to make the lawn area of the lawn or meadow area or the slope reinforcement accessible.
- the lawn area or the lawn or meadow area can be passable for vehicles or aircraft, for example.
- soil reinforcement or reinforcement can reduce or prevent the formation of ruts or sinking of a vehicle or an aircraft.
- accessibility for a fire service can be provided, in particular accessibility for emergency vehicles such as fire engines or ambulances.
- the lawn, the lawn or meadow area is flat.
- the lawn area, the lawn or meadow area is at least partially inclined, in particular inclined with respect to a horizontal.
- Slope fastenings secured by the devices and methods of the invention typically have an incline of at least 20% or more at least 50%.
- a lawn can in particular be a green ground with a base layer.
- a lawn is at least partially greened with grass.
- the lawn area can in particular be flat or curved.
- Typical embodiments are designed for fastening an inclined lawn area, in particular for fastening a slope lawn area.
- a slope in traffic route construction can be paved.
- a slope that adjoins a street, in particular a motorway, or a residential area can be paved.
- a slope may be attached to a dam or levee, such as a river, a waterway, or a coast.
- a slope can be secured against erosion or against slipping.
- the biopolymer is made at least essentially from a biogenic raw material.
- the biopolymer is at least essentially not made from fossil raw materials.
- the biopolymer is typically made from a raw material of vegetable origin, for example corn.
- the biopolymer is at least substantially biodegradable.
- the biopolymer is compostable.
- the biopolymer is degradable when composting at temperatures above 50 ° C, for example by means of cold rotting.
- the biopolymer is degradable during composting at temperatures above 55 ° C. or at temperatures above 60 ° C., for example by means of hot rotting.
- the biopolymer is at least essentially, in particular at least 70%, for example at least 80% or 90%, made of a polymer from the group polyhydroxyalkanoates (PHA) or the group of polyactides (PLA) or from a mixture of PHA and PLA.
- the biopolymer typically comprises additives, in particular wood fibers, cork fibers, lignin fibers, grass-based fibers, ground straw, corn starch or oxo additives.
- the base course typically contains sands such as quartz sand or natural sand, lava, topsoil, peat or natural cork.
- the base layer is in accordance with the DIN 18035 standard or comparable standards for the construction of Sports turf functional areas composed.
- the base layer is typically at least 5 cm thick, in particular at least 7 cm, or at most 30 cm, in particular at most 20 cm.
- Injecting the biopolymer typically comprises injecting or extruding through a nozzle into the base layer.
- the biopolymer is typically pressurized for injection or extrusion, typically at least 200 bar, in particular at least 400 bar or at least 500 bar or at least 600 bar.
- the biopolymer for injection or extrusion is placed under a pressure of at most 3000 bar, in particular of at most 2000 bar, in particular of at most 1500 bar or of at most 1300 bar.
- the injection or extrusion of the biopolymer is carried out batchwise.
- extruding or injecting the biopolymer comprises injection molding the biopolymer through the nozzle into the base layer.
- the machine is set up for injecting or extruding or injection molding the biopolymer into the base layer.
- the machine includes the extruder with the nozzle.
- an extruder screw of the extruder can be axially movable.
- the machine can be set up to move the extruder screw axially.
- the biopolymer, in particular liquefied or plasticized biopolymer can be put under pressure in the machine for injection or extrusion by an axial movement of the extruder screw.
- the extruder screw includes a non-return valve.
- a non-return valve can at least partially prevent the biopolymer from flowing back into the extruder screw, in particular while the biopolymer is being pressurized.
- the biopolymer is liquid during injection.
- the biopolymer is typically present as a melt of the biopolymer before or during the injection, in particular as a melt with a temperature of at least 150 ° C, in particular at least 200 ° C, or at most 400 ° C, in particular at most 300 ° C.
- liquid biopolymer hardens to a biopolymer fiber after being injected into the base layer.
- the extruder is set up to provide the biopolymer.
- the extruder comprises a melting device, the melting device being designed to provide a melt of the biopolymer.
- the melting device comprises a temperature control device for stepless regulation of the temperature of the melt.
- the biopolymer is typically produced from granules in the extruder, in particular by melting granules and mixing a melt of the granules.
- the granules can consist of granules of the biopolymer or be composed of different granules of polymers, in particular of PHA or PLA, or additives.
- the extruder includes an extruder screw.
- the production of the biopolymer takes place along the extruder screw of the extruder.
- the nozzle is connected to the extruder screw via a feed line.
- the machine comprises at least two extruders, each with a nozzle for injecting, in particular, at least two biopolymers of different composition into the base layer of the lawn.
- the nozzle has an outlet opening with a diameter of at least 1 mm, in particular of at least 2 mm or at least 3 mm, or of at most 7 mm, in particular of at most 5 mm or at most 4 mm.
- the biopolymer is injected through the outlet opening into the base layer, in particular extruded, for example continuously extruded at one point on the ground during an injection process. Overall, a discontinuous process typically results in which the release of the biopolymer is interrupted between the individual injection processes or during an injection process at one point on the floor.
- the nozzle is designed as a passage through a pressure plate.
- the pressure plate is typically designed as a flat pressure plate.
- the pressure plate forms a lateral surface of a Roller, which can be moved in particular rolling over the base course.
- the pressure plate is typically positioned on the base layer, in particular pressed onto the base layer.
- the biopolymer is typically injected into the base layer through an outlet opening of the nozzle designed as a passage through the pressure plate. Injection can take place in particular without prior pre-processing or loosening of the base course.
- the nozzle is designed as a needle or as a stub-shaped needle. In further typical embodiments, the nozzle is designed as a needle with at least two outlet openings or as a needle with at least two branched tips, in particular with at least one outlet opening at each tip.
- the nozzle is arranged on a nozzle carrier of the machine.
- the nozzle carrier is typically designed as a pressure plate.
- the pressure plate with the nozzle is pressed onto a surface of the base layer before the biopolymer is injected.
- the pressure plate is lifted from the surface.
- the pressure plate is repositioned for another injection.
- the nozzle carrier is designed as a roller. Typically the roller is moved rolling over the base course.
- the biopolymer is typically extruded or injected when the outlet opening of the nozzle is on or in the base layer.
- the nozzle carrier is designed as a frame on which a nozzle is arranged.
- the nozzle is typically made from metal, in particular from brass or from steel, for example from hardened steel or from stainless steel.
- the nozzle is at least 1 cm, in particular at least 5 cm or at least 10 cm, for example at least 15 cm or at least 25 cm long.
- the nozzle is inserted at least 1 cm deep into the base layer, in particular at least 5 cm or at least 8 cm deep, or at most 20 cm deep, in particular maximum 15 cm or maximum 12 cm deep.
- the biopolymer or compressed air is injected from a nozzle that does not protrude from the pressure plate.
- the biopolymer is injected through a nozzle, with the nozzle being inserted into the base course and moving the nozzle while the biopolymer is being injected.
- the nozzle is moved towards a surface of the base course during injection.
- the biopolymer is typically only extruded or injected into the base layer. The movement is typically continuous or incremental.
- the injection or extrusion takes place through a nozzle, the outlet opening of the nozzle being located outside the base layer.
- the biopolymer can be injected into the base layer as a directed beam of the biopolymer.
- the biopolymer fibers produced by injecting biopolymer protrude at least not significantly from the surface of the base layer, in particular not more than 3 cm, for example not more than 1.5 cm or not more than 0.5 cm.
- the extruder comprises a drive which is configured to move the nozzle during the injection of the biopolymer.
- the drive is typically set up to move the nozzle at least substantially perpendicular to a surface of the base layer.
- the drive is set up to move the nozzle at an angle of at least 45 °, in particular at least 60 ° or at least 70 °, to a surface of the base layer.
- the nozzle is typically arranged on a nozzle carrier of the machine, in particular on a pressure plate, on a roller or on a frame.
- the drive is typically set up to move the nozzle, starting from the nozzle carrier, at least 1 cm, in particular at least 5 cm or at least 10 cm, for example at least 15 cm, deep into the base course.
- the injection of the biopolymer is carried out at injection positions in the base course, with the distance between adjacent Injection positions is at least 0.5 cm, in particular at least 1 cm or at least 3 cm, or at most 12 cm, in particular at most 10 cm or at most 8 cm.
- the machine comprises a guide device which is designed to position the nozzle in order to position the nozzle at injection positions evenly distributed over the lawn.
- the guide device is set up to position the machine, a nozzle carrier of the machine or the nozzle for injecting the biopolymer.
- the guide device comprises means for determining the position of the nozzle or the machine on the lawn, for example markings on the lawn or in the vicinity of the lawn, an optical distance measuring device, in particular based on a laser, or a global one
- the guide device comprises means for positioning the nozzle, for example a vehicle for positioning the extruder with the nozzle on the lawn or a drive for positioning the nozzle or a nozzle carrier drive for positioning a nozzle carrier with the nozzle relative to other parts of the machine.
- the machine comprises a control device, in particular for controlling the guide device and the extruder.
- the control device typically comprises a computer or a microcontroller.
- the extruder comprises at least two nozzles, in particular at least 5, at least 10 or at least 20 nozzles.
- the distance between the centers of two adjacent nozzles is typically at least 0.5 cm, in particular at least 1 cm or at least 3 cm.
- the distance between two adjacent nozzles is at most 12 cm, in particular at most 10 cm or at most 8 cm.
- the biopolymer is injected into a base layer with an already ingrown natural grass.
- the base layer is cooled during the injection or after the injection of a melt of the biopolymer with water or by a stream of air.
- controlled cooling of the biopolymer can be achieved, whereby deformations of a hardening biopolymer can be avoided or reduced.
- protection of an already ingrown natural turf can also be guaranteed.
- the base course is preprocessed before the biopolymer is injected.
- the base course is loosened to generate air pores in the base course.
- the loosening takes place at injection positions of the base layer provided for injecting the biopolymer.
- the machine includes a source of compressed air and a compressed air nozzle connected to the source of compressed air.
- air pores are generated by an injection of compressed air into the base layer through a compressed air nozzle inserted into the base layer.
- the compressed air injection is typically carried out in the form of a compressed air pulse through the compressed air nozzle.
- the compressed air nozzle is designed as a hollow cylinder with an opening for the outlet of compressed air.
- the compressed air nozzle is designed as a hollow cylinder, with hollow branches and openings on the branches for the discharge of compressed air into the support layer.
- loosening of the base layer prior to injecting the biopolymer is dispensed with
- the machine includes a tool.
- Air pores are typically generated in the base layer by introducing the tool into the base layer and moving the tool in the base layer, in particular by moving the tool in the direction of the surface of the base layer.
- the tool can be designed, for example, as a mandrel with branches.
- the biopolymer is injected into air pores generated by loosening the base layer.
- a nozzle is inserted into the air pores in the base course.
- the nozzle is moved towards the surface of the base course during injection.
- the biopolymer fibers are produced by injecting a liquid biopolymer and then curing the biopolymer to form biopolymer fibers.
- the biopolymer fibers are produced by injecting a melt of the biopolymer and then cooling the biopolymer.
- the biopolymer fibers protrude at least 3 cm, in particular at least 5 cm or at least 10 cm deep into the base layer. Typically, the biopolymer fibers protrude at most 20 cm, in particular at most 15 cm or at most 10 cm into the base layer. In typical embodiments, the biopolymer fibers have a structure that branches from the surface of the base layer into the base layer.
- Typical embodiments of the machine, the method or the lawn area can offer the advantage over the prior art that the service life of the lawn area can be extended by re-injecting biopolymer or a higher load capacity can be achieved.
- it can be an advantage that the service life of the lawn can be adjusted based on the amount introduced or the biological durability of the biopolymer.
- Another advantage can be that a lawn can be available quickly after a short processing time, since natural grass does not need to be overgrown if it is already ingrown. In particular, a natural grass pitch can be usable after the plants have grown in a significantly shorter period of time.
- the grass pitch can be optimized biomechanically, in particular by setting the degree of hardness of a grass pitch, for example to prevent wear and tear on the grass pitch, fatigue of players or a risk of injury Prevent players.
- a lawn area can be optimized for different uses, for example for use as a performance stadium or as a rehabilitation training area.
- FIG. 1 shows a schematic structure of the machine for processing a lawn
- FIG. 2 shows a schematic structure of a further embodiment of the machine for processing a lawn
- FIG. 3 shows schematically the injection of biopolymer into a base layer by means of a nozzle carrier designed as a roller;
- 5A-D schematically the generation of air pores in a base layer and the introduction of the nozzle for injecting the biopolymer
- FIG. 6 shows a method in a typical embodiment.
- FIG. 1 A typical embodiment of the machine 1 is shown schematically in FIG.
- the machine 1 is positioned on a lawn 3 with a base layer 5.
- the base layer has an ingrown natural grass 7.
- the machine 1 comprises an extruder 9 with a nozzle 11.
- the extruder 9 is arranged in a vehicle 41.
- the extruder 9 comprises an extruder screw 15 and a feed line 21 for feeding a biopolymer from the extruder screw 15 to the nozzle 11.
- the extruder screw 15 is supplied with granules 17 from a granule reservoir 19.
- the extruder 9 comprises a melting device and produces the biopolymer along the extruder screw 15 by melting the granules 17 and mixing the melt of the granules 17. A melt of the biopolymer is transported to the nozzle 11 via the feed line 21.
- the nozzle 11 is movably arranged on a nozzle carrier 23.
- the nozzle carrier 23 is movably arranged on the vehicle 41.
- the nozzle carrier 23 is connected to a nozzle carrier drive 25 which is set up to move the nozzle carrier 23 relative to the vehicle 41.
- the nozzle carrier drive 25 is set up to move the nozzle carrier 23 to a surface of the support layer 5 or to press the nozzle carrier 23 onto the support layer 5.
- the nozzle 11 is connected to a drive 27.
- the drive 27 is set up to move the nozzle 11 relative to the nozzle carrier 23, in particular perpendicular to the surface of the supporting layer 5.
- the drive 27 is set up to introduce the nozzle 11 into the supporting layer 5 and the nozzle 11 into the supporting layer 5 to move.
- the machine 1 of FIG. 1 comprises a compressed air source 31 which supplies compressed air to a compressed air nozzle 33.
- the compressed air source 31 is designed as a compressor.
- the compressed air nozzle 33 is arranged on a compressed air nozzle carrier 37.
- a compressed air nozzle drive 35 is set up to move the compressed air nozzle 33 relative to the compressed air nozzle carrier 37, in particular perpendicular to a surface of the supporting layer 5.
- the compressed air nozzle drive 35 is set up to introduce the compressed air nozzle 33 into the supporting layer 5 and to move the compressed air nozzle 33 in the supporting layer 5 .
- a positioning device 39 is set up to move the compressed air nozzle carrier relative to the vehicle 41, in particular to the surface of the To move the support layer 5 or to press the compressed air nozzle carrier 37 onto the support layer 5.
- the machine 1 comprises a guide device for positioning the nozzle 11.
- a position determination device 43 is assigned to the guide device.
- the position determining device 43 is designed as a laser-based distance measuring device, which determines a distance to a marking 45 on the lawn area 3 for determining the position of the nozzle 11 on the lawn area 3.
- the guide device is a means for positioning the nozzle 1 1 assigned on the lawn, in particular the vehicle 41 or the nozzle carrier drive 25.
- a guide device for the exact positioning of the nozzle 11 can ensure that the biopolymer is injected with the desired density, in particular with a uniform density, over the lawn area 3 into the base layer 5. Due to a uniform density of the biopolymer fibers 53 produced by injecting biopolymer, changes in the mechanical properties of the base layer 5 across the lawn area 3 can in particular be avoided.
- Fig. 1 shows the machine 1 and the lawn 3 after a compressed air injection through the compressed air nozzle 33 into the base course at an injection position 49 and after positioning the nozzle 11 towards the injection position 49 by the guide device.
- the nozzle 11 is positioned for injecting the biopolymer into the air pores 51 generated by compressed air injection.
- 1 shows biopolymer fibers 53 which were previously produced by injecting biopolymer through nozzle 11 into air pores generated by compressed air injection.
- the machine 1 comprises a control device 47, which is designed as a computer in FIG. 1.
- the control device 47 controls or coordinates, in particular, the guide device, the loosening of the base layer 5 by compressed air injection through the compressed air nozzle 33 and the injection of the biopolymer through the nozzle 11.
- Fig. 2 shows a further embodiment of the machine 1, wherein a nozzle carrier 23 is designed as a roller.
- the nozzle carrier 23 can be moved over a lawn area 3 while rolling.
- Nozzles 11 are arranged on the nozzle carrier 23 and are oriented radially outward from an axis of the nozzle carrier 23.
- the nozzles 1 1 move with the roller and inject the biopolymer when one of the nozzles 11 rests against the base layer 5 of the lawn area 3 or is introduced into the base layer 5 from the nozzle carrier 23.
- an air pressure nozzle carrier 37 is designed as a further roller.
- the air pressure nozzle carrier 37 carries radially aligned air pressure nozzles 33.
- the air pressure nozzles 33 are set up to generate air pores 51 in the support layer 5.
- FIG. 3 shows schematically the injection of a biopolymer 55 into air pores 51 of a base layer 5.
- a nozzle carrier 23 is designed as a roller with a pressure plate as the outer surface.
- Nozzles 11 are designed as passages through the pressure plate.
- the biopolymer 55 is injected into air pores 51 of the base layer 5 through an outlet opening 13 of the nozzle 11 that is adjacent to the base layer 5.
- FIG. 4 schematically shows a nozzle 11 during the injection of a liquid biopolymer 55 into a base layer 5.
- the biopolymer 55 is extruded in FIG. 4 through an outlet opening 13 of the nozzle 11 into the base layer.
- the nozzle 11 was introduced into the base layer 5 from a nozzle carrier before the injection and is moved in the base layer 5 during the injection of the biopolymer 55.
- the nozzle 11 with the outlet opening 13 is moved in the direction of a surface of the support layer 5.
- the biopolymer 55 spreads in fine cracks in the base layer 5 and thereby forms branches 57.
- FIGS. 5A and 5B schematically show the generation of air pores 51 by compressed air injection into a support layer 5.
- a compressed air nozzle 33 is inserted into the support layer 5.
- the compressed air nozzle 33 is designed as a hollow cylinder tapering to a point with several openings 59 for the exit of compressed air from the compressed air nozzle 33.
- FIG. 5B compressed air has been injected through the openings 59 of the compressed air nozzle 33.
- the compressed air injection generates air pores 51 in the base layer 5, in particular by loosening the base layer 5, for example by releasing compaction in the base layer 5 or by expanding existing pores in the base layer 5.
- 5C shows a nozzle 11 shortly before the injection of a liquid biopolymer 55, the nozzle 11 being introduced into air pores 51 generated by loosening the support layer 5.
- the nozzle 11 injects the biopolymer 55 into the air pores 51.
- the biopolymer 55 can expand in the air pores 51 and possibly form branches.
- the nozzle 11 is moved in the direction of the surface of the base layer 5 during the injection.
- FIG. 6 shows an exemplary method for processing a lawn. The procedure is carried out on a lawn with natural grass that has already grown in. At 100, a compressed air nozzle is placed at an injection position provided for injecting a biopolymer.
- the base layer is loosened to generate air pores.
- the compressed air nozzle is inserted into the base course at the injection position.
- the base course is loosened by an injection of compressed air through the compressed air nozzle.
- the compressed air nozzle is then moved out of the base course.
- a nozzle for injecting a biopolymer is positioned at the injection position.
- the nozzle is introduced into the base course.
- the nozzle is inserted into the air pores generated by loosening the base course.
- the nozzle is inserted 10 cm deep into the base layer.
- the biopolymer is injected through the nozzle into the base course.
- a melt of the biopolymer is extruded through an outlet opening of the nozzle into the air pores of the support layer.
- the nozzle in the base course is moved in the direction of the surface of the base course.
- the pressure during injection or extrusion is typically 1000 bar in the exemplary embodiment shown in FIG. 6.
- the nozzle is moved out of the base course. This ends the injection of the biopolymer into the base course.
- the biopolymer then hardens to form a biopolymer fiber.
- the method described above thus includes exactly one continuous injection process during extrusion after the nozzle is inserted into the ground at 130 and pulled out again at 150.
- a plurality of injection processes can also be carried out discontinuously during such a cycle. There is typically an interruption in the injection process between two injection processes of a nozzle at different points on the floor, so that the process as a whole can also be referred to as discontinuous or, for example, as an injection molding process.
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019115810.9A DE102019115810A1 (de) | 2019-06-11 | 2019-06-11 | Maschine und Verfahren zum Bearbeiten einer Tragschicht eines Rasenplatzes |
PCT/EP2020/065863 WO2020249521A1 (de) | 2019-06-11 | 2020-06-08 | Maschine und verfahren zum bearbeiten einer tragschicht eines rasenplatzes und rasenplatz |
Publications (1)
Publication Number | Publication Date |
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EP3983608A1 true EP3983608A1 (de) | 2022-04-20 |
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ID=71078526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20731854.4A Withdrawn EP3983608A1 (de) | 2019-06-11 | 2020-06-08 | Maschine und verfahren zum bearbeiten einer tragschicht eines rasenplatzes und rasenplatz |
Country Status (3)
Country | Link |
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EP (1) | EP3983608A1 (de) |
DE (1) | DE102019115810A1 (de) |
WO (1) | WO2020249521A1 (de) |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE2608074B2 (de) * | 1976-02-27 | 1980-06-12 | Wolf-Geraete Gmbh, 5240 Betzdorf | Verfahren zur Wiederherstellung und Verbesserung geschädigter Rasennarben |
DE3043696C2 (de) * | 1980-11-19 | 1983-07-28 | Wolf-Geräte GmbH, 5240 Betzdorf | Vorrichtung zum Einstanzen von Perforationslöchern in Rasenflächen |
US8196346B2 (en) * | 2008-09-24 | 2012-06-12 | Tommy K. Thrash | Delayed-activation, hydration maintenance, apparatus and method |
US9567716B2 (en) * | 2014-02-25 | 2017-02-14 | Dbi Holding, Llc | Systems and methods for automating the application of friction-modifying coatings |
DE102015113210A1 (de) * | 2015-08-11 | 2017-02-16 | heiler GmbH & Co. KG | Faserbewehrte Rasentragschicht |
DE102017113307A1 (de) * | 2017-06-16 | 2018-12-20 | Intergreen Ag | Sportplatzoberbau und Sportplatz |
-
2019
- 2019-06-11 DE DE102019115810.9A patent/DE102019115810A1/de not_active Withdrawn
-
2020
- 2020-06-08 EP EP20731854.4A patent/EP3983608A1/de not_active Withdrawn
- 2020-06-08 WO PCT/EP2020/065863 patent/WO2020249521A1/de unknown
Also Published As
Publication number | Publication date |
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WO2020249521A1 (de) | 2020-12-17 |
DE102019115810A1 (de) | 2020-12-17 |
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