DE4116674A1 - Ergonomically designed clearing saw - has circular-saw blade on end of tubular handle and uses drive moment to counteract side-kicking of handle - Google Patents

Ergonomically designed clearing saw - has circular-saw blade on end of tubular handle and uses drive moment to counteract side-kicking of handle

Info

Publication number
DE4116674A1
DE4116674A1 DE19914116674 DE4116674A DE4116674A1 DE 4116674 A1 DE4116674 A1 DE 4116674A1 DE 19914116674 DE19914116674 DE 19914116674 DE 4116674 A DE4116674 A DE 4116674A DE 4116674 A1 DE4116674 A1 DE 4116674A1
Authority
DE
Germany
Prior art keywords
handle
drive
saw
saw blade
kicking
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.)
Granted
Application number
DE19914116674
Other languages
German (de)
Other versions
DE4116674C2 (en
Inventor
Dietrich Gerhard Ellsaesser
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.)
ELLSAESSER, DIETRICH GERHARD, 79112 FREIBURG, DE
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19914116674 priority Critical patent/DE4116674C2/en
Publication of DE4116674A1 publication Critical patent/DE4116674A1/en
Application granted granted Critical
Publication of DE4116674C2 publication Critical patent/DE4116674C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • A01D34/90—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for carrying by the operator
    • A01D34/902—Ergonomic provisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/12—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of drives for circular saw blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Sawing (AREA)
  • Harvester Elements (AREA)

Abstract

An ergonomically designed clearing saw for cleaning and releasing operations in young plantations has a circular-saw blade on the end of the tubular handle. The side-kicking tendency of the handle cuased by the saw blade is countered by the drive moment of the motor in such a way that a drive unit, arranged so that it can rotate about the drive axis of the motor, can swing out laterally when a counter-moment is applied. ADVANTAGE - Reduces the tendency of the implement to kick back or to the side, thus enabling ergonomically more favourable operation.

Description

Die Erfindung betrifft ein Freischneidegerät, das durch sein An­ triebsmoment die seitliche Gegenschlagneigung des Schneideblattes weitgehend ausgleichen kann.The invention relates to a brush cutter, which by its type driving torque the lateral counter-impact tendency of the cutting blade can largely compensate.

Freischneidegeräte werden heute vorwiegend als starr verbundene Einheit von Motor und Schaftrohr mit Antriebswelle eingesetzt. Es gibt auch Geräte, die auf dem Rücken getragen werden und eine flexible Verbindung von Motoreinheit und Schaftwelle haben. In beiden Fällen wird jedoch kein direktes Zusammenwirken zwi­ schen Antriebsmoment und den am Schneidewerkzeug erzeugten Kräf­ ten erzielt.Brush cutters are predominantly connected as rigid today Unit of motor and shaft tube with drive shaft inserted. There are also devices that are carried on the back and one have a flexible connection between the motor unit and shaft shaft. In both cases, however, there is no direct interaction between driving torque and the force generated on the cutting tool achieved.

Beim Einsatz eines Freischneidegerätes entstehen in der Schnitt­ ebene am Schneideblatt Kräfte entgegen der Drehrichtung dessel­ ben. Diese Gegenkräfte können sich in einer Querschlag- oder Rückschlagtendenz, je nach Einlaufrichtung und Freiwinkel der Schneiden in das Schnittgut äußern. Die Seitenschlagtendenz muß vom Maschinenführer über die Arme abgefangen werden. Dies ist mit einer ergonomisch bedenklichen Torsion der Wirbelsäule verbunden.When using a brush cutter, the cut is created Force on the cutting blade against the direction of rotation ben. These opposing forces can result in a crosscut or Kickback tendency, depending on the direction of entry and clearance angle of the Express cutting in the clippings. The side hit tendency must are intercepted by the machine operator's arms. This is with an ergonomically questionable torsion of the spine.

Aufgabe der vorliegenden Erfindung ist es, die Seitenschlagten­ denz des Gerätes zu reduzieren und so ein ergonomisch günstigeres Führen des Gerätes zu ermöglichen. In erster Linie gilt es, die Seitenschläge und nicht die Tendenz, nach vorne oder hinten zu schlagen zu reduzieren. Bewegungen des Gerätes in der Sichtachse des Maschinenführers sind durch einfaches Armbeugen oder -strecken leicht zu kontrollieren. Da der hintere Teil des Schneideblattes mit einer Schutzvorrichtung abgedeckt ist, treten vor allem Seitenbewegungen entgegen der Drehrichtung des Schnei­ deblattes auf.The object of the present invention is the side flaps to reduce the device's density and thus an ergonomically more favorable one Allow to lead the device. First and foremost, the Side blows and not the tendency to move forward or backward hit reduce. Movements of the device in the line of sight  of the machine operator can be done by simply bending the arm or - easy to control routes. Since the rear part of the Cutting blade is covered with a protective device, kick especially lateral movements against the direction of rotation of the cutting deblattes on.

Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß das Antriebsmoment über eine um die Motorachse bewegliche Riemen­ kassette auf die Griffwelle übertragen wird. Bei Belastung des Werkzeugs entsteht durch das Antriebsmoment ein Gegenmoment, durch das die Antriebskassette dem seitlichen Abweichen des Griff­ rohres entgegenwirkt. Der Drehpunkt des Griffrohres befindet sich ungefähr eine Handbreit unter der Hüfte des Maschinenführers. Die Drehpunktaufnahme besteht aus einer Schlaufe, in der das Griff­ rohr weiterhin frei nach oben und unten beweglich ist, aber nicht zur Seite abweichen kann. Der Motor des Gerätes ist um die Querachse neigbar am Rückentragegestell angebracht, so daß eine Bewegung des Griffrohres entlang der Sichtlinie durch den Maschi­ nenführer möglich ist.To solve this problem, the invention proposes that the drive torque via a belt that can move around the motor axis cassette is transferred to the handle shaft. When loading the A counter torque arises from the drive torque, through which the drive cassette the lateral deviation of the handle tube counteracts. The pivot point of the handle tube is about a hand's breadth under the operator's waist. The The pivot point consists of a loop in which the handle tube is still freely movable up and down, however cannot deviate to the side. The engine of the device is around Transverse axis attached to the back support frame so that a Movement of the handle tube along the line of sight through the machine leader is possible.

Vorteilhaft ist, daß den seitlichen Abweichungen des Werkzeuges im Ansatz entgegengewirkt wird und die Torsionsbelastung des Rückrades um die Hochachse des Maschinenführers entscheidend re­ duziert wird. Außerdem wird durch das Rückentragegestell eine er­ gonomische Körperhaltung unterstützt. Um das Gerät den Körperma­ ßen des Maschinenführers optimal anpassen zu können, ist die Höhe des Motors auf dem Tragegestell einstellbar.It is advantageous that the lateral deviations of the tool is counteracted in the approach and the torsional load of the Rear wheel around the vertical axis of the machine operator decisive right is induced. In addition, he is through the backpack supports ergonomic posture. Around the device the body The height of the machine operator can be optimally adjusted of the motor adjustable on the carrying frame.

Da der starken Torsionsbelastung entgegengewirkt wird, wird eine aufrechte statt leicht nach vorne gebeugte Arbeitshaltung geför­ dert. Die Drehung um die Hochachse wird in eine seitliche Biege­ beanspruchung des Maschinenführers umgewandelt, die über den Beinstand und über eine große Hebelwirkung über die Schulter auf­ genommen wird.Since the strong torsional load is counteracted, a Upright working posture instead of leaning slightly forward different. The rotation around the vertical axis becomes a lateral bend machine operator's stress, converted over the Leg stand and a large leverage over the shoulder is taken.

ZeichnungsbeschreibungDrawing description

1 Rippenantriebsriemenkassette
2 Drehpunkt des Griffrohres
3 Oberer Drehpunkt der Antriebskassette
4 Gelenk am oberen Griffrohr
5 Gekapseltes Antriebsaggregat
6 Vertikalverstellung des Antriebes auf dem Tragegestell
7 Auspuff
8 Griffrohrlasche
9 Entlastungszug 10 Schneideblatt 1 ribbed drive belt cassette
2 pivot point of the handle tube
3 Upper pivot point of the drive cassette
4 Joint on the upper handle tube
5 Encapsulated drive unit
6 Vertical adjustment of the drive on the support frame
7 exhaust
8 grip tube tab
9 relief train 10 cutting blade

Claims (2)

1. Ergonomisches Freischneidegerät, dadurch gekennzeichnet, daß der Seitenschlagtendenz des Griffrohres, hervorgerufen durch das Sägeblatt, durch das Antriebsmoment des Motors in der Weise ent­ gegengewirkt wird, daß eine um die Antriebsachse des Motors dreh­ bar gelagerte Antriebseinheit bei Anliegen eines Gegenmoments seitlich ausschwenken kann.1. Ergonomic brush cutter, characterized in that the side strike tendency of the handle tube, caused by the saw blade, is counteracted by the drive torque of the motor in such a way that a drive unit rotatably mounted about the drive axis of the motor can swing out laterally when a counter torque is applied. 2. Ergonomisches Freischneidegerät nach Anspruch 1, dadurch ge­ kennzeichnet, daß der Antriebsmotor am Tragegestell kippbar auf­ gehängt ist, so daß ein Vor- und Zurückschwenken der Antriebsüber­ tragungseinheit möglich ist.2. Ergonomic brush cutter according to claim 1, characterized ge indicates that the drive motor can be tilted to the support frame is suspended so that the drive swings back and forth unit is possible.
DE19914116674 1991-05-22 1991-05-22 Brush cutter Expired - Fee Related DE4116674C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914116674 DE4116674C2 (en) 1991-05-22 1991-05-22 Brush cutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914116674 DE4116674C2 (en) 1991-05-22 1991-05-22 Brush cutter

Publications (2)

Publication Number Publication Date
DE4116674A1 true DE4116674A1 (en) 1992-11-26
DE4116674C2 DE4116674C2 (en) 1994-09-22

Family

ID=6432164

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914116674 Expired - Fee Related DE4116674C2 (en) 1991-05-22 1991-05-22 Brush cutter

Country Status (1)

Country Link
DE (1) DE4116674C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010140939A1 (en) * 2009-06-03 2010-12-09 Husqvarna Ab Clearing saw

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1727404U (en) * 1956-05-18 1956-08-02 Georg Schwaiger HOPS AND THE LIKE CUTTING MACHINE.
GB2027324A (en) * 1978-08-14 1980-02-20 Yamada Machinery Ind Co Ltd A portable power tool
DE3421999A1 (en) * 1984-06-14 1986-01-09 Fa. Andreas Stihl, 7050 Waiblingen REBLAUBSCHNEIDGERAET
DE8816301U1 (en) * 1988-07-20 1989-06-08 Moort, Hendrik Gerrit van, Vriezenveen chainsaw

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1727404U (en) * 1956-05-18 1956-08-02 Georg Schwaiger HOPS AND THE LIKE CUTTING MACHINE.
GB2027324A (en) * 1978-08-14 1980-02-20 Yamada Machinery Ind Co Ltd A portable power tool
DE3421999A1 (en) * 1984-06-14 1986-01-09 Fa. Andreas Stihl, 7050 Waiblingen REBLAUBSCHNEIDGERAET
DE8816301U1 (en) * 1988-07-20 1989-06-08 Moort, Hendrik Gerrit van, Vriezenveen chainsaw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010140939A1 (en) * 2009-06-03 2010-12-09 Husqvarna Ab Clearing saw

Also Published As

Publication number Publication date
DE4116674C2 (en) 1994-09-22

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8122 Nonbinding interest in granting licenses declared
8127 New person/name/address of the applicant

Owner name: ELLSAESSER, DIETRICH GERHARD, 7032 SINDELFINGEN, D

D2 Grant after examination
8327 Change in the person/name/address of the patent owner

Owner name: ELLSAESSER, DIETRICH GERHARD, 79112 FREIBURG, DE

8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee