WO1996009752A1 - Dispositif de type tondeuse et reglage en hauteur rapide pour ce dispositif - Google Patents

Dispositif de type tondeuse et reglage en hauteur rapide pour ce dispositif Download PDF

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Publication number
WO1996009752A1
WO1996009752A1 PCT/NL1995/000322 NL9500322W WO9609752A1 WO 1996009752 A1 WO1996009752 A1 WO 1996009752A1 NL 9500322 W NL9500322 W NL 9500322W WO 9609752 A1 WO9609752 A1 WO 9609752A1
Authority
WO
WIPO (PCT)
Prior art keywords
mower
transport roller
connecting rod
mower device
fastened
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.)
Ceased
Application number
PCT/NL1995/000322
Other languages
English (en)
Inventor
Leonardus Lambertus Van Loen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Van Loen Techniek BV
Original Assignee
Van Loen Techniek BV
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 Van Loen Techniek BV filed Critical Van Loen Techniek BV
Publication of WO1996009752A1 publication Critical patent/WO1996009752A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/42—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a horizontal axis, e.g. cutting-cylinders
    • A01D34/54—Cutting-height adjustment
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D2101/00—Lawn-mowers

Definitions

  • the invention relates to a mower device comprising at least one mower unit which is supported with a transport roller on a ground surface, said transport roller being coupled to the mower unit so as to be adjustable in height.
  • Such a device is widely used for mowing lawns.
  • the optimum mowing height of grass depends on, for example, the age of the grass plants, the soil condition, and the weather conditions.
  • the mowing height of the device should accordingly be adjustable in order to prevent that the device is to be uncoupled and a different device with a different mowing height is to be connected, which would not only be time-consuming, but would also necessitate the investment in one or several additional mower devices.
  • the height adjustment of a present art mower device is based on threaded spindles or slots on either side of each mower unit, whereby the height thereof can be steplessly varied.
  • the height readjustment in such a mower device is particularly time-consuming, especially because a mower device is often fitted with a number of mower units; for example, fivefold or sevenfold mower devices are quite usual, and this readjustment in addition requires a certain accuracy because of the possibility of maladjustment.
  • the present invention accordingly has for its object to provide a device of the kind mentioned in the opening paragraph with which the mowing height can be realized in a simple manner and within a comparatively short period.
  • a mower device of the kind mentioned in the opening paragraph is characterized in that the transport roller is provided with means for manually adjusting the height of said roller between a predetermined high and a predetermined low position.
  • the invention is based on the recognition that it suffices for mowing of laws in actual practice to adjust the mowing height between two discrete levels: high and low. Stepless intermediate positions are found to be often, if not indeed always, superfluous in practice.
  • a special embodiment of the device according to the invention is characterized in that said means on either side of the transport roller comprise a quick height adjustment assembly comprising a first and a second sliding rod, each of which is accommodated in a holder with sliding possibility in a direction substantially transverse to the transport roller, the latter being fastened on either side to a first end of the relevant sliding rod while the two sliding rods are eccentrically fastened at their opposite ends to a connecting rod via a pivot arm which pivots at both ends, which connecting rod is fastened to a fixed part of the mower unit with pivoting possibility about its centreline and can be manually operated.
  • a high and a low mowing height can be interchanged in a single simple operation by placing the transport roller in the predetermined and once accurately set high and low positions by means of the quick height adjustment assembly.
  • the invention also relates to a quick height adjustment designed for such a mower device and will now be explained in more detail with reference to an embodiment and an accompanying drawing, in which:
  • Fig. 1 is a side elevation of the quick height adjustment assembly of an embodiment of the mower device according to the invention
  • Fig. 2 is an elevation of the device of Fig. 1 seen in a direction transverse thereto; and Fig. 3 is an exploded view of the quick height adjustment assembly of the device of Figs, l and 2.
  • Fig. 1 shows an embodiment of the mower device according to the invention with a fixed part of a mower unit 100 to which a transport roller 101 is coupled by means of a two-sided quick height adjustment assembly 102.
  • the remaing parts of the mower device are deemed sufficiently familiar to those skilled in the art and are accordingly omitted to keep the Figures clear. It should be noted, however, that the invention can be applied to all types of mower, so for example not only to cage-type mowers but also to rotary mowers and other types, whether designed for cutting of grass or otherwise.
  • the quick height adjustment assembly 102 in this example comprises a holder 1 with sliding rod 2 and compression spring 3, a setscrew 5, a clamping block 6 with a pivot arm 7 which is connected with pivots at both ends.
  • the two holders are one another's mirrored images for reasons of symmetry.
  • the sliding rods 2 in the two holders 1 are interconnected by a common connecting rod 8 and securely connected thereto by means of the clamping block 6 with detachable clamping means in the form of a bolt and thread 61.
  • the pivot arm 7 is here connected eccentrically relative to the connecting rod 8.
  • the quick height adjustment assemblies 102 could also be fitted each with its own connecting rod 8, but in that case the switch-over between a high and a low mowing position would necessitate two operations, whereas one operation suffices in the case of a single connecting rod.
  • the connecting rod 8 is fastened to a fixed part of the mower unit with pivoting possibility about its centreline. This is realized in the present example in that the connecting rod 8 is received between the two clamping blocks 6 in through holes 104 provided for this purpose at the ends of the holders 1.
  • the connecting rod 8 is rotated by means of actuation rod 10, which is provided with a jig for this purpose.
  • the sliding rods 2 are pushed outward by this because they are connected to the connecting rod via the pivot arm 7 and the clamping block 6.
  • the sliding rods 2 are coupled to the front and/or rear transport roller 101 of the mower unit by means of a mounting eyelet 22.
  • a transport roller defines the mowing height because the mower unit with its mowing tools is supported on the ground surface by this roller.
  • the high mowing height can be steplessly set beforehand because the two holders are adjustably fastened in a slot 105 of the mower unit 100 by means of a levelling pin 4.
  • the clamping block 6 is held against a fixed abutment stop 1 1 provided adjacent the clamping block in the high mowing position.
  • the low mowing position can be exactly set with an adjustable stop arranged between the transport roller 101 and at least one of the holders 1. In the present example this stop is present in twofold for operation of the device at both sides, comprising a setscrew 5 and an abutment 12.
  • spring means in the form of a pretensioned compression spring 3 accommodated in the holder 1 coaxially with the sliding rod 2.
  • the compression spring 3 bears on a portion of the holder 1 at a first side and at the opposite side on a projection 106 provided for this purpose on the sliding rod 2.
  • the clamping block 6 with the connecting rod 8 is pivotable about a centreline 81 of the connecting rod 8, an accurate, synchronous action of the two height adjustment assemblies 102 is safeguarded, so that the mowing height can be switched between a high and a low position in a single movement.
  • Presetting of the exact high and low mowing heights may be achieved once and for all beforehand, for example in the storage shed, after which in the field a single, simple manual operation requiring little accuracy suffices for bringing the mowing height from a high to a low position or vice versa. This occupies hardly any time, also if it is to be performed several times in the case of a multiple mower arrangement.
  • the invention thus provides a mower device which can be utilized in a much more practical and flexible way than an existing mower device.

Landscapes

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

Abstract

Dispositif de type tondeuse comportant au moins une unité tondeuse (100) portée par un rouleau de transport (101) venant au contact du sol. Ce rouleau de transport (101) est associé à l'unité tondeuse (100) de manière à être réglable en hauteur, et il est pourvu d'un ensemble (102) permettant le réglage manuel de la hauteur dudit rouleau entre des positions supérieure et inférieure prédéterminées.
PCT/NL1995/000322 1994-09-26 1995-09-26 Dispositif de type tondeuse et reglage en hauteur rapide pour ce dispositif Ceased WO1996009752A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9401557A NL9401557A (nl) 1994-09-26 1994-09-26 Snelhoogteverstelling.
NL9401557 1994-09-26

Publications (1)

Publication Number Publication Date
WO1996009752A1 true WO1996009752A1 (fr) 1996-04-04

Family

ID=19864695

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1995/000322 Ceased WO1996009752A1 (fr) 1994-09-26 1995-09-26 Dispositif de type tondeuse et reglage en hauteur rapide pour ce dispositif

Country Status (2)

Country Link
NL (1) NL9401557A (fr)
WO (1) WO1996009752A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0976314A1 (fr) * 1998-06-16 2000-02-02 Black & Decker Inc. Mécanisme de réglage
US6202396B1 (en) 1998-06-16 2001-03-20 Black & Decker Inc. Lawn mower wheel mechanism
US6240713B1 (en) 1998-07-11 2001-06-05 Black & Decker Inc. Mower having castor wheel assemblies with rotational braking mechanisms
US6339918B1 (en) 1998-06-16 2002-01-22 Black & Decker Inc. Lawn mower height adjustment
US6484484B1 (en) 1998-06-16 2002-11-26 Black & Decker Inc. Lawn mower for providing power to a garden implement
CN108670440A (zh) * 2018-05-31 2018-10-19 郑州大学第附属医院 一种整形美容手术器具用清洗器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1164603A (en) * 1966-06-14 1969-09-17 Barrington Sidney Haynes Improvements in Agricultural Implements
US3524309A (en) * 1968-08-20 1970-08-18 Gordon E Bartlett Golf greens mower
AU464129B2 (en) * 1973-04-13 1975-08-14 Rover Mowers Pty. Ltd Improvements in and relating to cylindertype mowers
EP0382527A1 (fr) * 1989-02-09 1990-08-16 Ransomes Jacobsen Limited Dispositif faucheur
WO1991003927A1 (fr) * 1989-09-15 1991-04-04 Ransomes Sims & Jefferies Limited Unite tondeuse de gazon a reglage de la hauteur de coupe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1164603A (en) * 1966-06-14 1969-09-17 Barrington Sidney Haynes Improvements in Agricultural Implements
US3524309A (en) * 1968-08-20 1970-08-18 Gordon E Bartlett Golf greens mower
AU464129B2 (en) * 1973-04-13 1975-08-14 Rover Mowers Pty. Ltd Improvements in and relating to cylindertype mowers
EP0382527A1 (fr) * 1989-02-09 1990-08-16 Ransomes Jacobsen Limited Dispositif faucheur
WO1991003927A1 (fr) * 1989-09-15 1991-04-04 Ransomes Sims & Jefferies Limited Unite tondeuse de gazon a reglage de la hauteur de coupe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0976314A1 (fr) * 1998-06-16 2000-02-02 Black & Decker Inc. Mécanisme de réglage
US6202396B1 (en) 1998-06-16 2001-03-20 Black & Decker Inc. Lawn mower wheel mechanism
US6212863B1 (en) 1998-06-16 2001-04-10 Black & Decker Inc. Lawn mower adjustment mechanism
US6339918B1 (en) 1998-06-16 2002-01-22 Black & Decker Inc. Lawn mower height adjustment
US6484484B1 (en) 1998-06-16 2002-11-26 Black & Decker Inc. Lawn mower for providing power to a garden implement
US6240713B1 (en) 1998-07-11 2001-06-05 Black & Decker Inc. Mower having castor wheel assemblies with rotational braking mechanisms
CN108670440A (zh) * 2018-05-31 2018-10-19 郑州大学第附属医院 一种整形美容手术器具用清洗器

Also Published As

Publication number Publication date
NL9401557A (nl) 1996-05-01

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