WO2002071828A1 - Dispositif de coupe verticale - Google Patents

Dispositif de coupe verticale Download PDF

Info

Publication number
WO2002071828A1
WO2002071828A1 PCT/DK2002/000158 DK0200158W WO02071828A1 WO 2002071828 A1 WO2002071828 A1 WO 2002071828A1 DK 0200158 W DK0200158 W DK 0200158W WO 02071828 A1 WO02071828 A1 WO 02071828A1
Authority
WO
WIPO (PCT)
Prior art keywords
vertical
spacer
vertical cutter
shaft
blades
Prior art date
Application number
PCT/DK2002/000158
Other languages
English (en)
Inventor
Palle SØRENSEN
Original Assignee
Soerensen Palle
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Soerensen Palle filed Critical Soerensen Palle
Publication of WO2002071828A1 publication Critical patent/WO2002071828A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B45/00—Machines for treating meadows or lawns, e.g. for sports grounds
    • A01B45/02—Machines for treating meadows or lawns, e.g. for sports grounds for aerating
    • A01B45/026—Scarifiers comprising a knife reel actively driven around a substantially horizontal shaft

Definitions

  • the invention relates to a vertical cutter for treating- a lawn, for example a green, and of the kind that comprises a carriage which is running across the lawn during treatment, a shaft rotatably mounted on the carriage at a distance above the lawn and oriented mainly crosswise to the direction of motion, an engine for rotating the shaft, a number of vertical cutting blades non-rotatably mounted with spacing on the shaft, and a spacer mounted between each of two adjacent vertical cutting blades.
  • a vertical cutter is typically used for treating a green around a hole on a golf course.
  • the character of golf demands that the green offers the least possible resistance to the movement of the golf balls and that this resistance furthermore is constant to the greatest possible extent.
  • grass is a living organism that grows and therefore is likely to change texture depending on the weather and local growing conditions. Therefore, it is necessary to cut the grass frequently to e.g. a height of 3 mm.
  • the cut grass and other plant material will lie as a mat layer of a thickness of for example a couple of millimetres on the ground.
  • This mat layer is bad for the free access of air, water and light to the roots of the grass. Thereby, the growing conditions of the grass are deteriorated, the result of which is that the green eventually will not be able to meet the required standard.
  • the mat layer is therefore cut through by means of a vertical cutter during which possible offshoots also are cut.
  • a conventional vertical cutter with front mounted collecting box and guide screen behind the vertical cutting blades will however only be able to throw a small part of the loosened mat up on the guide screen and along this further to the collecting box. The rest will remain lying on the ground and has to be removed in a separate operation, for example by driving across the green one more time with a rotating brush for sweeping up the material .
  • a further treatment of the green consists in pricking holes in the ground to a depth of e.g. 8-20 mm measured from the top of the grass of the green usually in the spring and autumn.
  • the material thereby brought up from the holes is shaped as grains of a diameter of e.g. 8-20 mm.
  • the grains remain on the ground and therefore subsequently have to be swept up or removed by for example running over the green with a scraping blade in V- shape with hydraulic lift.
  • a vertical cutter of the kind mentioned in the opening paragraph is provided, that is able to collect loose material on the ground during a vertical cutting of a lawn in a more effective manner than hitherto known.
  • a vertical cutter of the kind mentioned in the opening paragraph is provided, that is able to remove loose material on -the ground during the vertical cutting of a lawn even with worn vertical blades .
  • a vertical cutter of the kind mentioned in the opening paragraph that removes loose material on the ground during the vertical cutting of a lawn in a manner which is gentle on the grass.
  • a vertical cutter of the kind mentioned in the opening paragraph that raises the grass during the vertical cutting of a lawn.
  • each spacer is non-rotatably mounted on the shaft and provided with brushes .
  • the brushes will effectively sweep loosened mat and possible grains from a pricking of the green up on the guide screen and further along this screen to the front mounted collecting box. Thereby, the need for expensive additional operations for removing said material is eliminated.
  • the brushes are flexible. Their effect is therefore not or hardly changed even if the vertical blades are worn, and the distance of the blade shaft above the ground is therefore adjusted so that the brushes eventually will touch the grass. Due to the flexibility of the brushes, the loose material is swept up without damaging the grass which on the contrary is raised so that the vertical cutter according to the invention leaves the treated lawn in perfect condition.
  • Fig. 1 is a diagrammatic perspective view obliquely from above of a vertical cutter according to the invention
  • Fig. 2 is on a larger scale a fractional perspective view of a rotatable blade shaft which is part of the vertical cutter in fig. 1 and provided with parallel vertical blades and spacers for keeping these blades in spacing,
  • Fig. 3 is on an even larger scale a perspective view of one of the spacers in fig. 2,
  • Fig. 4 is a diagrammatic cross-sectional view of the vertical cutter according to the invention in function on a lawn
  • Fig. 5 shows a second embodiment of a spacer with brushes according to the invention.
  • the vertical cutter according to the invention is used for treating a green around a hole on a golf course.
  • Fig. 1 shows that the vertical cutter comprises a frame 1 for a carriage (not shown) which is running across the green during a vertical cutting operation.
  • a blade shaft 2 is rotatably journaled and is rotated by an engine (not shown) during operation at a rotational speed of e.g. 1000-2000 rpm.
  • an engine not shown
  • a number of parallel vertical blades 3 are mounted in a non-rotatable manner and kept in spacing by the spacers 4.
  • a front mounted collecting box 5 is serving for collecting loosened material from the green during the vertical cutting operation.
  • the collecting box is located on the rear of the vertical cutter - seen in ⁇ the direction of motion - for the sake of clarity while the collecting box in reality is mounted on the front.
  • the blades 3 and the spacers 4 are non-rotatably mounted on the shaft 2 so that they forcedly follow its rotation.
  • this non-rotatable mounting can also be done in any other expedient way.
  • Fig. 2 shows a preferred embodiment of such a non-rotatable mounting.
  • a hexagonal shaft 2 is non-rotatably coupled to the vertical blades 3 and the spacers 4 respectively by means of complementarily shaped hexagonal holes in these parts.
  • the vertical blades 3 are thin discs of e.g. a durable steel. Each of these discs are designed with a number of teeth 6 distributed along the periphery with uniform spacing. The teeth are serving for treating the green in a way which will be described in detail with reference to fig. 4.
  • a cylindrical spacer 4 is shown with a hexagonal hole 7 fitting the hexagonal shaft 2.
  • three brushes 8 are extending radially outwards from the periphery of the spacer at a mutual angular distance of 120°.
  • Each brush 8 preferably fills the entire gap between two adjacent vertical blades and consists of a number of flexible bristles 9 which, as shown in fig. 4, are fixed in radial holes 10 in the spacers 4 which e.g. can be cast of a suitable plastic material.
  • Fig. 4 shows the vertical cutter in operation on a green 11 with grass 12 of a height of e.g. 3 mm.
  • grass 12 of a height of e.g. 3 mm.
  • a mat layer 14 of a thickness of e.g. 2 mm has settled.
  • the vertical cutter and the vertical blades are running and rotating respectively in the direction indicated by the arrows. During this, the teeth 6 of the vertical blades are cutting through the mat layer 14 and, in the case shown, a further distance into the subjacent dirt 13.
  • Fig. 4 shows a situation in which new vertical blades are being used.
  • the brushes 8 in this case have a slightly smaller radial extent than the teeth 6 of the vertical blades and they therefore only touch the top of the grass when the teeth 6 of the vertical blades are in the ground.
  • the brushes 8 are effectively sweeping the loosened mat and other possible material on the ground, for example grains from a previous pricking of the green, up on a guide screen 15 which - seen in the direction of motion - is located behind the vertical blades 3.
  • the swept up material is guided along the guide screen 15 further into the front mounted collecting box 5 in the direction indicated by the arrow.
  • the vertical cutter is also used for only thinning out the grass on the green.
  • the vertical blades are therefore not made to penetrate into the ground via the mat layer but only to work on the grass itself.
  • the brushes are functioning in the same way as described above.
  • the green 11 can be vertically cut and weeded of loosened mat and other possible material in one and the same work routine.
  • the vertical cutter according to the invention therefore considerably reduces the costs of maintaining the green .
  • the bristles 9 of the brushes 8 are however made of a flexible material that allow the brushes to bend flexibly so that the grass is not damaged but on the contrary is raised so that the green will obtain the desired perfect condition even if the teeth of the vertical blades are worn.
  • Fig. 5 shows a second embodiment of a spacer according to the invention.
  • the spacer 16 has a hexagonal periphery which is congruent with the hexagonal hole 7.
  • the hole of the spacers can have any other polygonal design, for example triangular or hexagonal.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)
  • Soil Working Implements (AREA)

Abstract

L'invention concerne un dispositif de coupe verticale destiné à couper verticalement un green et à ramasser simultanément la paille décollée et d'autres matériaux détachés situés sur le green. Ce dispositif de coupe verticale comprend un chariot pour rouler à travers le green (11), un arbre (2) monté de façon rotative sur le chariot à une certaine distance au-dessus du gazon, l'arbre étant orienté principalement dans la direction de la largeur par rapport à la direction de déplacement, un moteur pour faire tourner l'arbre, un certain nombre de lames coupantes (3) verticales parallèles montées de façon non rotative avec des espacements sur l'arbre, et un élément d'espacement (4) monté entre chaque paire de lames coupantes verticales adjacentes. Les éléments d'espacements (4) possèdent des brosses (8) pour balayer efficacement la paille décollée et les autres matériaux détachés situés sur le sol sans abîmer l'herbe. Ainsi, les opérations supplémentaires conventionnelles destinées à éliminer lesdits matériaux détachés sont évitées, permettant ainsi que les coûts de maintenance du green en condition régulière soient considérablement réduits.
PCT/DK2002/000158 2001-03-13 2002-03-12 Dispositif de coupe verticale WO2002071828A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200100423A DK173901B1 (da) 2001-03-13 2001-03-13 Afstandsbøsning til vertikalskærer
DKPA200100423 2001-03-13

Publications (1)

Publication Number Publication Date
WO2002071828A1 true WO2002071828A1 (fr) 2002-09-19

Family

ID=8160365

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2002/000158 WO2002071828A1 (fr) 2001-03-13 2002-03-12 Dispositif de coupe verticale

Country Status (2)

Country Link
DK (1) DK173901B1 (fr)
WO (1) WO2002071828A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1571895A1 (fr) * 2002-12-03 2005-09-14 Glenn Robert Craig Bobine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0472102A1 (fr) * 1990-08-24 1992-02-26 SABO-Maschinenfabrik GmbH Scarificateur avec un axe portant des disques à lames
GB2279221A (en) * 1993-06-29 1995-01-04 Sisis Equip Turf scarifying and sweeping apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0472102A1 (fr) * 1990-08-24 1992-02-26 SABO-Maschinenfabrik GmbH Scarificateur avec un axe portant des disques à lames
GB2279221A (en) * 1993-06-29 1995-01-04 Sisis Equip Turf scarifying and sweeping apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1571895A1 (fr) * 2002-12-03 2005-09-14 Glenn Robert Craig Bobine
EP1571895A4 (fr) * 2002-12-03 2006-03-22 Glenn Robert Craig Bobine

Also Published As

Publication number Publication date
DK200100423A (da) 2002-01-28
DK173901B1 (da) 2002-02-11

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